{"id":12788,"date":"2021-08-11T03:41:34","date_gmt":"2021-08-11T03:41:34","guid":{"rendered":"https:\/\/fclatbz2dc.wpdns.site\/?p=12788"},"modified":"2024-01-27T08:23:09","modified_gmt":"2024-01-27T08:23:09","slug":"laser-welding-technology","status":"publish","type":"post","link":"https:\/\/mydery.com\/cs\/laser-welding-technology\/","title":{"rendered":"7 Reliable Sources for Laser Welding Technology"},"content":{"rendered":"<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"HS-2000W Open Type CNC Fiber Laser Cutting Machine\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/-QxI7icYoqI?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Laser welding technology is an efficient and precise welding method that uses a high-energy-density laser beam as a heat source. Laser welding technology is one of the important aspects of the application of laser material processing technology. In the 1970s, it was mainly used for welding thin-walled materials and low-speed welding. The welding process is of thermal conductivity type, that is, the surface of the workpiece is heated by laser radiation, and the surface heat is diffused to the inside through thermal conduction. By controlling the width, energy, peak power, and repetition frequency of the laser pulse With other parameters, the workpiece is melted to form a specific molten pool. Because of its unique advantages, it has been successfully applied to the precision welding of micro and small parts.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u010c\u00ednsk\u00e9 laserov\u00e9 sva\u0159ov\u00e1n\u00ed je na sv\u011btov\u00e9 pokro\u010dil\u00e9 \u00farovni. M\u00e1 technologii a schopnost pou\u017e\u00edvat laser k vytv\u00e1\u0159en\u00ed slo\u017eit\u00fdch sou\u010d\u00e1st\u00ed z titanov\u00e9 slitiny o plo\u0161e v\u00edce ne\u017e 12 metr\u016f \u010dtvere\u010dn\u00edch a investovala do v\u00fdroby prototyp\u016f a produkt\u016f mnoha dom\u00e1c\u00edch projekt\u016f v\u011bdeck\u00e9ho v\u00fdzkumu v oblasti letectv\u00ed. V \u0159\u00edjnu 2013 z\u00edskali \u010d\u00edn\u0161t\u00ed odborn\u00edci na sva\u0159ov\u00e1n\u00ed Brooke Prize, nejvy\u0161\u0161\u00ed akademick\u00e9 ocen\u011bn\u00ed v oboru sva\u0159ov\u00e1n\u00ed, a \u010d\u00ednsk\u00e1 \u00farove\u0148 laserov\u00e9ho sva\u0159ov\u00e1n\u00ed byla uzn\u00e1na sv\u011btem.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-technical-principle\"><strong>Technick\u00fd princip<\/strong><strong><\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Laserov\u00e9 sva\u0159ov\u00e1n\u00ed m\u016f\u017ee b\u00fdt realizov\u00e1no kontinu\u00e1ln\u00edm nebo pulzn\u00edm laserov\u00fdm paprskem. Princip laserov\u00e9ho sva\u0159ov\u00e1n\u00ed lze rozd\u011blit na sva\u0159ov\u00e1n\u00ed tepeln\u00fdm veden\u00edm a laserov\u00e9 sva\u0159ov\u00e1n\u00ed hlubokou penetrac\u00ed. Hustota v\u00fdkonu je men\u0161\u00ed ne\u017e 10<sup>4<\/sup>~10<sup>5<\/sup>&nbsp;W\/cm<sup>2<\/sup>&nbsp;pro sva\u0159ov\u00e1n\u00ed veden\u00edm tepla. V tomto okam\u017eiku je hloubka pr\u016fniku mal\u00e1 a rychlost sva\u0159ov\u00e1n\u00ed je pomal\u00e1; kdy\u017e je hustota v\u00fdkonu v\u011bt\u0161\u00ed ne\u017e 10<sup>5<\/sup>~10<sup>7<\/sup>&nbsp;W\/cm<sup>2<\/sup>, kovov\u00fd povrch je zapu\u0161t\u011bn do \u201eotvor\u016f\u201c p\u016fsoben\u00edm tepla, aby se vytvo\u0159il hlubok\u00fd pr\u016fvar. Rychl\u00e1 rychlost sva\u0159ov\u00e1n\u00ed a velk\u00fd pom\u011br stran.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Princip tepeln\u011b vodiv\u00e9ho laserov\u00e9ho sva\u0159ov\u00e1n\u00ed je: laserov\u00e9 z\u00e1\u0159en\u00ed oh\u0159\u00edv\u00e1 zpracov\u00e1van\u00fd povrch a povrchov\u00e9 teplo difunduje do interi\u00e9ru veden\u00edm tepla. \u0158\u00edzen\u00edm \u0161\u00ed\u0159ky laserov\u00e9ho pulsu, energie, \u0161pi\u010dkov\u00e9ho v\u00fdkonu a opakovac\u00ed frekvence a dal\u0161\u00edch parametr\u016f laseru se obrobek roztav\u00ed a vytvo\u0159\u00ed specifickou roztavenou l\u00e1ze\u0148.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Laserov\u00fd sva\u0159ovac\u00ed stroj pou\u017e\u00edvan\u00fd pro sva\u0159ov\u00e1n\u00ed ozuben\u00ed a sva\u0159ov\u00e1n\u00ed metalurgick\u00fdch plech\u016f zahrnuje p\u0159edev\u0161\u00edm laserov\u00e9 sva\u0159ov\u00e1n\u00ed hlubokou penetrac\u00ed.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Laserov\u00e9 sva\u0159ov\u00e1n\u00ed s hlubok\u00fdm pr\u016fvarem obecn\u011b pou\u017e\u00edv\u00e1 k dokon\u010den\u00ed spojen\u00ed materi\u00e1l\u016f kontinu\u00e1ln\u00ed laserov\u00e9 paprsky. Metalurgick\u00fd fyzik\u00e1ln\u00ed proces je velmi podobn\u00fd sva\u0159ov\u00e1n\u00ed elektronov\u00fdm paprskem, to znamen\u00e1, \u017ee mechanismus p\u0159em\u011bny energie je dokon\u010den prost\u0159ednictv\u00edm struktury \u201ekl\u00ed\u010dov\u00e9 d\u00edrky\u201c. P\u0159i oza\u0159ov\u00e1n\u00ed laserem s dostate\u010dn\u011b vysokou hustotou v\u00fdkonu se materi\u00e1l odpa\u0159uje a tvo\u0159\u00ed mal\u00e9 otvory. Tato d\u00edra napln\u011bn\u00e1 p\u00e1rou je jako \u010dern\u00e9 t\u011bleso, kter\u00e9 pohlcuje t\u00e9m\u011b\u0159 ve\u0161kerou energii dopadaj\u00edc\u00edho paprsku. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Rovnov\u00e1\u017en\u00e1 teplota v dutin\u011b dosahuje cca 2500\u00b0C. Teplo se p\u0159en\u00e1\u0161\u00ed z vn\u011bj\u0161\u00ed st\u011bny vysokoteplotn\u00ed dutiny k roztaven\u00ed kovu obklopuj\u00edc\u00edho dutinu. Mal\u00fd otvor je vypln\u011bn vysokoteplotn\u00ed p\u00e1rou generovanou kontinu\u00e1ln\u00edm odpa\u0159ov\u00e1n\u00edm materi\u00e1lu st\u011bny pod oza\u0159ov\u00e1n\u00edm paprsku. \u010cty\u0159i st\u011bny mal\u00e9ho otvoru jsou obklopeny roztaven\u00fdm kovem a tekut\u00fd kov je obklopen pevn\u00fdmi materi\u00e1ly (a u v\u011bt\u0161iny konven\u010dn\u00edch sva\u0159ovac\u00edch proces\u016f a laserov\u00e9ho konduk\u010dn\u00edho sva\u0159ov\u00e1n\u00ed je energie nejprve ulo\u017eena na povrch obrobku a pot\u00e9 transportov\u00e1na do uvnit\u0159 p\u0159evodem).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Proud\u011bn\u00ed kapaliny vn\u011b st\u011bny p\u00f3ru a povrchov\u00e9 nap\u011bt\u00ed vrstvy st\u011bny jsou udr\u017eov\u00e1ny v dynamick\u00e9 rovnov\u00e1ze s kontinu\u00e1ln\u011b vytv\u00e1\u0159en\u00fdm tlakem p\u00e1ry v dutin\u011b. Sv\u011bteln\u00fd paprsek nep\u0159etr\u017eit\u011b vstupuje do mal\u00e9ho otvoru a materi\u00e1l mimo mal\u00fd otvor nep\u0159etr\u017eit\u011b proud\u00ed. Jak se paprsek pohybuje, mal\u00fd otvor je v\u017edy ve stabiln\u00edm stavu toku. Jin\u00fdmi slovy, mal\u00fd otvor a roztaven\u00fd kov obklopuj\u00edc\u00ed st\u011bnu otvoru se pohybuj\u00ed vp\u0159ed s dop\u0159ednou rychlost\u00ed vedouc\u00edho sv\u011bteln\u00e9ho paprsku a roztaven\u00fd kov vypln\u00ed mezeru po odsunut\u00ed mal\u00e9ho otvoru a kondenzuje a vytvo\u0159\u00ed se svar. . V\u0161echny v\u00fd\u0161e uveden\u00e9 procesy prob\u00edhaj\u00ed tak rychle, \u017ee rychlost sva\u0159ov\u00e1n\u00ed m\u016f\u017ee snadno dos\u00e1hnout n\u011bkolika metr\u016f za minutu.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-work-equipment\"><strong>Pr\u00e1ce <\/strong><strong>E<\/strong><strong>vybaven\u00ed<\/strong><strong><\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Skl\u00e1d\u00e1 se z optick\u00e9ho oscil\u00e1toru a m\u00e9dia um\u00edst\u011bn\u00e9ho mezi zrcadly na obou konc\u00edch dutiny oscil\u00e1toru. Kdy\u017e je m\u00e9dium vybuzeno do vysokoenergetick\u00e9ho stavu, za\u010dne generovat sv\u011bteln\u00e9 vlny ve stejn\u00e9 f\u00e1zi a odr\u00e1\u017eet se tam a zp\u011bt mezi zrcadly na obou konc\u00edch, \u010d\u00edm\u017e se vytvo\u0159\u00ed efekt fotoelektrick\u00e9ho spojen\u00ed strun, zes\u00edl\u00ed sv\u011bteln\u00e9 vlny a z\u00edsk\u00e1 se dostate\u010dn\u00e1 energie. aby za\u010dalo vyza\u0159ovat laserov\u00e9 sv\u011btlo.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Laser lze tak\u00e9 interpretovat jako za\u0159\u00edzen\u00ed, kter\u00e9 p\u0159em\u011b\u0148uje surovou energii, jako je elektrick\u00e1 energie, chemick\u00e1 energie, tepeln\u00e1 energie, sv\u011bteln\u00e1 energie nebo jadern\u00e1 energie, na paprsek elektromagnetick\u00e9ho z\u00e1\u0159en\u00ed ur\u010dit\u00fdch specifick\u00fdch sv\u011bteln\u00fdch frekvenc\u00ed (ultrafialov\u00e9 sv\u011btlo, viditeln\u00e9 sv\u011btlo nebo infra\u010derven\u00e9 sv\u011btlo). sv\u011btlo). Konverzn\u00ed forma se snadno prov\u00e1d\u00ed v n\u011bkter\u00fdch pevn\u00fdch, kapaln\u00fdch nebo plynn\u00fdch m\u00e9di\u00edch. Kdy\u017e jsou tato m\u00e9dia excitov\u00e1na ve form\u011b atom\u016f nebo molekul, vytv\u00e1\u0159ej\u00ed sv\u011bteln\u00e9 paprsky-lasery s t\u00e9m\u011b\u0159 stejnou f\u00e1z\u00ed a t\u00e9m\u011b\u0159 jedinou vlnovou d\u00e9lkou. D\u00edky stejn\u00e9 f\u00e1zi a jedin\u00e9 vlnov\u00e9 d\u00e9lce je rozd\u00edlov\u00fd \u00fahel velmi mal\u00fd a vzd\u00e1lenost, kterou lze p\u0159en\u00e1\u0161et, je pom\u011brn\u011b dlouh\u00e1, ne\u017e je vysoce koncentrovan\u00e1, aby poskytovala funkce, jako je sva\u0159ov\u00e1n\u00ed, \u0159ez\u00e1n\u00ed a tepeln\u00e9 zpracov\u00e1n\u00ed.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-welding-method\"><strong>Welding Method<\/strong><\/h3>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"800\" height=\"800\" src=\"https:\/\/mydery.com\/wp-content\/themes\/woodmart\/images\/lazy.svg\" data-src=\"http:\/\/mydery.com\/wp-content\/uploads\/2022\/04\/\u4e3b\u56fe.jpg\" alt=\"Laser Welding Technology\" class=\"wd-lazy-fade wp-image-15139\" title=\"\" srcset=\"\" data-srcset=\"https:\/\/mydery.com\/wp-content\/uploads\/2022\/04\/\u4e3b\u56fe.jpg 800w, https:\/\/mydery.com\/wp-content\/uploads\/2022\/04\/\u4e3b\u56fe-300x300.jpg 300w, https:\/\/mydery.com\/wp-content\/uploads\/2022\/04\/\u4e3b\u56fe-150x150.jpg 150w, https:\/\/mydery.com\/wp-content\/uploads\/2022\/04\/\u4e3b\u56fe-768x768.jpg 768w, https:\/\/mydery.com\/wp-content\/uploads\/2022\/04\/\u4e3b\u56fe-12x12.jpg 12w, https:\/\/mydery.com\/wp-content\/uploads\/2022\/04\/\u4e3b\u56fe-600x600.jpg 600w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><figcaption class=\"wp-element-caption\">Laser Welding Technology<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Metody sva\u0159ov\u00e1n\u00ed t\u011bsn\u011bn\u00edm senzoru jsou odporov\u00e9 sva\u0159ov\u00e1n\u00ed, argonov\u00e9 obloukov\u00e9 sva\u0159ov\u00e1n\u00ed, sva\u0159ov\u00e1n\u00ed elektronov\u00fdm paprskem, plazmov\u00e9 sva\u0159ov\u00e1n\u00ed a tak d\u00e1le.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Odporov\u00e9 sva\u0159ov\u00e1n\u00ed<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Pou\u017e\u00edv\u00e1 se ke sva\u0159ov\u00e1n\u00ed tenk\u00fdch kovov\u00fdch d\u00edl\u016f. Obrobek je upnut mezi dv\u011b elektrody a povrch elektrody kontaktovan\u00fd velk\u00fdm proudem je roztaven velk\u00fdm proudem, to znamen\u00e1, \u017ee sva\u0159ov\u00e1n\u00ed se prov\u00e1d\u00ed odporov\u00fdm oh\u0159evem obrobku. Obrobek se snadno deformuje. Odporov\u00e9 sva\u0159ov\u00e1n\u00ed se sva\u0159uje na obou stran\u00e1ch spoje, zat\u00edmco laserov\u00e9 sva\u0159ov\u00e1n\u00ed se prov\u00e1d\u00ed pouze na jedn\u00e9 stran\u011b. Elektrody pou\u017e\u00edvan\u00e9 p\u0159i odporov\u00e9m sva\u0159ov\u00e1n\u00ed je t\u0159eba \u010dasto udr\u017eovat, aby se odstranily oxidy a kov ulp\u00edvaj\u00edc\u00ed na obrobku. Laserov\u00e9 sva\u0159ov\u00e1n\u00ed tenk\u00fdch kovov\u00fdch p\u0159epl\u00e1tovan\u00fdch spoj\u016f nen\u00ed V kontaktu s obrobkem m\u016f\u017ee paprsek vstoupit tak\u00e9 do oblasti, kter\u00e1 se konven\u010dn\u00edm sva\u0159ov\u00e1n\u00edm obt\u00ed\u017en\u011b sva\u0159uje, a rychlost sva\u0159ov\u00e1n\u00ed je vysok\u00e1.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img decoding=\"async\" width=\"502\" height=\"366\" src=\"https:\/\/mydery.com\/wp-content\/themes\/woodmart\/images\/lazy.svg\" data-src=\"http:\/\/mydery.com\/wp-content\/uploads\/2021\/08\/electric-resistance-welding.png\" alt=\"Elektrick\u00e9 odporov\u00e9 sva\u0159ov\u00e1n\u00ed\" class=\"wd-lazy-fade wp-image-12791\" title=\"\" srcset=\"\" data-srcset=\"https:\/\/mydery.com\/wp-content\/uploads\/2021\/08\/electric-resistance-welding.png 502w, https:\/\/mydery.com\/wp-content\/uploads\/2021\/08\/electric-resistance-welding-300x219.png 300w, https:\/\/mydery.com\/wp-content\/uploads\/2021\/08\/electric-resistance-welding-16x12.png 16w, https:\/\/mydery.com\/wp-content\/uploads\/2021\/08\/electric-resistance-welding-150x109.png 150w\" sizes=\"(max-width: 502px) 100vw, 502px\" \/><figcaption class=\"wp-element-caption\">Elektrick\u00e9 odporov\u00e9 sva\u0159ov\u00e1n\u00ed<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"http:\/\/mydery.com\/cs\/quiz-how-much-do-you-know-about-laser-arc-hybrid-welding\/\">Argonov\u00e9 obloukov\u00e9 sva\u0159ov\u00e1n\u00ed<\/a>: pomoc\u00ed netaviteln\u00fdch elektrod a ochrann\u00e9ho plynu se \u010dasto pou\u017e\u00edv\u00e1 ke sva\u0159ov\u00e1n\u00ed tenk\u00fdch obrobk\u016f, ale rychlost sva\u0159ov\u00e1n\u00ed je ni\u017e\u0161\u00ed a tepeln\u00fd p\u0159\u00edkon je mnohem v\u011bt\u0161\u00ed ne\u017e laserov\u00e9 sva\u0159ov\u00e1n\u00ed, kter\u00e9 je n\u00e1chyln\u00e9 k deformaci.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img decoding=\"async\" width=\"489\" height=\"510\" src=\"https:\/\/mydery.com\/wp-content\/themes\/woodmart\/images\/lazy.svg\" data-src=\"http:\/\/mydery.com\/wp-content\/uploads\/2021\/08\/Argon-arc-welding-machine.jpg\" alt=\"Argonov\u00fd sva\u0159ovac\u00ed stroj \" class=\"wd-lazy-fade wp-image-12794\" title=\"\" srcset=\"\" data-srcset=\"https:\/\/mydery.com\/wp-content\/uploads\/2021\/08\/Argon-arc-welding-machine.jpg 489w, https:\/\/mydery.com\/wp-content\/uploads\/2021\/08\/Argon-arc-welding-machine-288x300.jpg 288w, https:\/\/mydery.com\/wp-content\/uploads\/2021\/08\/Argon-arc-welding-machine-12x12.jpg 12w, https:\/\/mydery.com\/wp-content\/uploads\/2021\/08\/Argon-arc-welding-machine-150x156.jpg 150w\" sizes=\"(max-width: 489px) 100vw, 489px\" \/><figcaption class=\"wp-element-caption\"> Argonov\u00fd obloukov\u00fd sva\u0159ovac\u00ed stroj <\/figcaption><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\">Argonov\u00fd sva\u0159ovac\u00ed stroj<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Plazmov\u00e9 obloukov\u00e9 sva\u0159ov\u00e1n\u00ed: podobn\u00e9 argonov\u00e9mu oblouku, ale jeho sva\u0159ovac\u00ed ho\u0159\u00e1k vytvo\u0159\u00ed stla\u010den\u00fd oblouk pro zv\u00fd\u0161en\u00ed teploty oblouku a hustoty energie. Je rychlej\u0161\u00ed ne\u017e sva\u0159ov\u00e1n\u00ed argonov\u00fdm obloukem a m\u00e1 v\u011bt\u0161\u00ed hloubku pr\u016fniku, ale je hor\u0161\u00ed ne\u017e laserov\u00e9 sva\u0159ov\u00e1n\u00ed.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Sva\u0159ov\u00e1n\u00ed elektronov\u00fdm paprskem: Spol\u00e9h\u00e1 na paprsek urychlen\u00fdch elektron\u016f s vysokou energetickou hustotou, kter\u00fd dopad\u00e1 na obrobek a generuje obrovsk\u00e9 teplo v mal\u00e9 hust\u00e9 oblasti na povrchu obrobku, vytv\u00e1\u0159\u00ed efekt \u201emal\u00e9 d\u00edry\u201c, \u010d\u00edm\u017e doch\u00e1z\u00ed k hlubok\u00e9mu pronik\u00e1n\u00ed. sva\u0159ov\u00e1n\u00ed. Hlavn\u00ed nev\u00fdhodou sva\u0159ov\u00e1n\u00ed elektronov\u00fdm paprskem je, \u017ee vy\u017eaduje prost\u0159ed\u00ed s vysok\u00fdm vakuem, aby se zabr\u00e1nilo rozptylu elektron\u016f. Vybaven\u00ed je slo\u017eit\u00e9. Velikost a tvar sva\u0159ence jsou omezeny vakuovou komorou. Kvalita mont\u00e1\u017ee sva\u0159ence je p\u0159\u00edsn\u011b vy\u017eadov\u00e1na. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Lze tak\u00e9 realizovat sva\u0159ov\u00e1n\u00ed elektronov\u00fdm paprskem bez vakua. Rozptyl a \u0161patn\u00e9 zaost\u0159en\u00ed ovlivn\u00ed efekt. Sva\u0159ov\u00e1n\u00ed elektronov\u00fdm paprskem m\u00e1 tak\u00e9 probl\u00e9my s magnetick\u00fdm offsetem a rentgenov\u00fdm z\u00e1\u0159en\u00edm. Proto\u017ee jsou elektrony nabit\u00e9, bude na n\u011b m\u00edt vliv vychylov\u00e1n\u00ed magnetick\u00e9ho pole. Proto je nutn\u00e9, aby byly obrobky pro sva\u0159ov\u00e1n\u00ed elektronov\u00fdm paprskem p\u0159ed sva\u0159ov\u00e1n\u00edm demagnetizov\u00e1ny. Rentgenov\u00e9 z\u00e1\u0159en\u00ed je zvl\u00e1\u0161t\u011b siln\u00e9 pod vysok\u00fdm tlakem a oper\u00e1tory je t\u0159eba chr\u00e1nit. Laserov\u00e9 sva\u0159ov\u00e1n\u00ed nevy\u017eaduje vakuovou komoru a demagnetiza\u010dn\u00ed o\u0161et\u0159en\u00ed p\u0159ed sva\u0159ov\u00e1n\u00edm obrobku. Lze jej prov\u00e1d\u011bt v atmosf\u00e9\u0159e a nen\u00ed probl\u00e9m s rentgenovou ochranou, lze jej tedy provozovat online ve v\u00fdrobn\u00ed lince a lze s n\u00edm sva\u0159ovat i magnetick\u00e9 materi\u00e1ly.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-laser-welding-classification\"><strong>Laserov\u00e9 sva\u0159ov\u00e1n\u00ed<\/strong> <strong>Klasifikace<\/strong><\/h3>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img decoding=\"async\" width=\"633\" height=\"394\" src=\"https:\/\/mydery.com\/wp-content\/themes\/woodmart\/images\/lazy.svg\" data-src=\"http:\/\/mydery.com\/wp-content\/uploads\/2021\/08\/CO2-laser.jpg\" alt=\"CO2 lasery \" class=\"wd-lazy-fade wp-image-12795\" title=\"\" srcset=\"\" data-srcset=\"https:\/\/mydery.com\/wp-content\/uploads\/2021\/08\/CO2-laser.jpg 633w, https:\/\/mydery.com\/wp-content\/uploads\/2021\/08\/CO2-laser-300x187.jpg 300w, https:\/\/mydery.com\/wp-content\/uploads\/2021\/08\/CO2-laser-600x373.jpg 600w, https:\/\/mydery.com\/wp-content\/uploads\/2021\/08\/CO2-laser-150x93.jpg 150w\" sizes=\"(max-width: 633px) 100vw, 633px\" \/><figcaption class=\"wp-element-caption\"> CO<sub>2<\/sub>&nbsp;lasery <\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img decoding=\"async\" width=\"608\" height=\"410\" src=\"https:\/\/mydery.com\/wp-content\/themes\/woodmart\/images\/lazy.svg\" data-src=\"http:\/\/mydery.com\/wp-content\/uploads\/2021\/08\/Nd-YAG-lasers.jpg\" alt=\"Nd: YAG lasery\" class=\"wd-lazy-fade wp-image-12796\" title=\"\" srcset=\"\" data-srcset=\"https:\/\/mydery.com\/wp-content\/uploads\/2021\/08\/Nd-YAG-lasers.jpg 608w, https:\/\/mydery.com\/wp-content\/uploads\/2021\/08\/Nd-YAG-lasers-300x202.jpg 300w, https:\/\/mydery.com\/wp-content\/uploads\/2021\/08\/Nd-YAG-lasers-18x12.jpg 18w, https:\/\/mydery.com\/wp-content\/uploads\/2021\/08\/Nd-YAG-lasers-600x405.jpg 600w, https:\/\/mydery.com\/wp-content\/uploads\/2021\/08\/Nd-YAG-lasers-150x101.jpg 150w\" sizes=\"(max-width: 608px) 100vw, 608px\" \/><figcaption class=\"wp-element-caption\">Nd: YAG lasery<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Pro sva\u0159ov\u00e1n\u00ed se pou\u017e\u00edvaj\u00ed dva hlavn\u00ed typy laser\u016f, a to CO<sub>2<\/sub>&nbsp;lasery a Nd:YAG lasery. Oba CO<sub>2<\/sub>&nbsp;laser a Nd: YAG laser je infra\u010derven\u00e9 sv\u011btlo neviditeln\u00e9 pouh\u00fdm okem. Paprsek produkovan\u00fd Nd:YAG laserem je p\u0159ev\u00e1\u017en\u011b bl\u00edzk\u00e9 infra\u010derven\u00e9 sv\u011btlo o vlnov\u00e9 d\u00e9lce 1,06 Lm. Tepeln\u00fd vodi\u010d m\u00e1 vysokou m\u00edru absorpce sv\u011btla t\u00e9to vlnov\u00e9 d\u00e9lky. U v\u011bt\u0161iny kov\u016f je jeho odrazivost 20% ~ 30%. Pokud je pou\u017eito standardn\u00ed sv\u011bteln\u00e9 zrcadlo, lze bl\u00edzk\u00fd infra\u010derven\u00fd paprsek zaost\u0159it na pr\u016fm\u011br 0,25 mm. Paprsek CO<sub>2<\/sub>&nbsp;laser je vzd\u00e1len\u00e9 infra\u010derven\u00e9 sv\u011btlo s vlnovou d\u00e9lkou 10,6 lm. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Odrazivost v\u011bt\u0161iny kov\u016f v\u016f\u010di tomuto sv\u011btlu dosahuje 80% ~ 90% a pro zaost\u0159en\u00ed paprsku do pr\u016fm\u011bru 0,75-0,1 mm je zapot\u0159eb\u00ed speci\u00e1ln\u00ed sv\u011bteln\u00e9 zrcadlo. V\u00fdkon Nd:YAG laseru m\u016f\u017ee obecn\u011b dos\u00e1hnout asi 4000~6000W a maxim\u00e1ln\u00ed v\u00fdkon nyn\u00ed dos\u00e1hl 10 000W. Spole\u010dnost CO<sub>2<\/sub>&nbsp;v\u00fdkon laseru m\u016f\u017ee snadno dos\u00e1hnout 20 000 W nebo v\u00edce.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Vysoce v\u00fdkonn\u00fd CO<sub>2<\/sub>&nbsp;laser \u0159e\u0161\u00ed probl\u00e9m vysok\u00e9 odrazivosti pomoc\u00ed d\u00edrkov\u00e9ho efektu. Kdy\u017e se povrch materi\u00e1lu oz\u00e1\u0159en\u00fd sv\u011btelnou skvrnou roztav\u00ed, vznikne d\u00edrka. Tato parou napln\u011bn\u00e1 d\u00edrka je jako \u010dern\u00e9 t\u011bleso, kter\u00e9 t\u00e9m\u011b\u0159 \u00fapln\u011b pohlcuje energii dopadaj\u00edc\u00edho sv\u011btla. Rovnov\u00e1\u017en\u00e1 teplota je asi 25 000 e a odrazivost rychle kles\u00e1 b\u011bhem n\u011bkolika mikrosekund. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">P\u0159esto\u017ee v\u00fdvojov\u00e9 zam\u011b\u0159en\u00ed o <a href=\"https:\/\/www.youtube.com\/watch?v=t4BfQGhhbOQ\" target=\"_blank\" rel=\"noopener\">CO<sub>2<\/sub>&nbsp;lasery<\/a> se st\u00e1le zam\u011b\u0159uje na v\u00fdvoj za\u0159\u00edzen\u00ed, nejde o zv\u00fd\u0161en\u00ed maxim\u00e1ln\u00edho v\u00fdstupn\u00edho v\u00fdkonu, ale o to, jak zlep\u0161it kvalitu paprsku a v\u00fdkon ost\u0159en\u00ed. Nav\u00edc p\u0159i pou\u017eit\u00ed vysokov\u00fdkonn\u00e9ho sva\u0159ov\u00e1n\u00ed s CO<sub>2<\/sub>&nbsp;laser nad 10 kW, je-li pou\u017eit argonov\u00fd ochrann\u00fd plyn, je \u010dasto indukov\u00e1no siln\u00e9 plazma a hloubka pr\u016fniku se st\u00e1v\u00e1 m\u011bl\u010d\u00ed. Proto, kdy\u017e CO<sub>2<\/sub>&nbsp;laserov\u00e9 vysoce v\u00fdkonn\u00e9 sva\u0159ov\u00e1n\u00ed, jako ochrann\u00fd plyn se \u010dasto pou\u017e\u00edv\u00e1 helium, kter\u00e9 nevytv\u00e1\u0159\u00ed plazmu.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Aplikace kombinace diodov\u00e9ho laseru pro vzru\u0161uj\u00edc\u00ed vysoce v\u00fdkonn\u00e9 Nd:YAG krystaly je d\u016fle\u017eit\u00fdm v\u00fdvojov\u00fdm t\u00e9matem, kter\u00e9 v\u00fdrazn\u011b zlep\u0161\u00ed kvalitu laserov\u00fdch paprsk\u016f a vytvo\u0159\u00ed efektivn\u011bj\u0161\u00ed laserov\u00e9 zpracov\u00e1n\u00ed. Pou\u017eit\u00edm p\u0159\u00edm\u00e9ho diodov\u00e9ho pole k buzen\u00ed laseru, jeho\u017e v\u00fdstupn\u00ed vlnov\u00e1 d\u00e9lka je v bl\u00edzk\u00e9 infra\u010derven\u00e9 oblasti, jeho pr\u016fm\u011brn\u00fd v\u00fdkon dos\u00e1hl 1 kW a \u00fa\u010dinnost fotoelektrick\u00e9 konverze se bl\u00ed\u017e\u00ed 50%. Dioda m\u00e1 tak\u00e9 del\u0161\u00ed \u017eivotnost (10 000 h), co\u017e pom\u00e1h\u00e1 sni\u017eovat n\u00e1klady na \u00fadr\u017ebu laserov\u00e9ho za\u0159\u00edzen\u00ed. V\u00fdvoj diodov\u011b \u010derpan\u00fdch pevnol\u00e1tkov\u00fdch laserov\u00fdch za\u0159\u00edzen\u00ed.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-process-parameters\"><strong>Proces <\/strong><strong>P<\/strong><strong>arametry<\/strong><strong><\/strong><\/h3>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"h-power-density\"><strong>Nap\u00e1jen\u00ed <\/strong><strong>D<\/strong><strong>entita<\/strong><strong><\/strong><\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Hustota v\u00fdkonu je jedn\u00edm z nejd\u016fle\u017eit\u011bj\u0161\u00edch parametr\u016f laserov\u00e9ho zpracov\u00e1n\u00ed. S vy\u0161\u0161\u00ed hustotou v\u00fdkonu m\u016f\u017ee b\u00fdt povrchov\u00e1 vrstva zah\u0159\u00e1t\u00e1 na bod varu b\u011bhem mikrosekundov\u00e9ho \u010dasov\u00e9ho rozsahu, co\u017e m\u00e1 za n\u00e1sledek velk\u00e9 mno\u017estv\u00ed odpa\u0159ov\u00e1n\u00ed. Proto je vysok\u00e1 hustota v\u00fdkonu v\u00fdhodn\u00e1 pro zpracov\u00e1n\u00ed \u00fab\u011bru materi\u00e1lu, jako je d\u011brov\u00e1n\u00ed, \u0159ez\u00e1n\u00ed a grav\u00edrov\u00e1n\u00ed. U ni\u017e\u0161\u00edch v\u00fdkonov\u00fdch hustot trv\u00e1 n\u011bkolik milisekund, ne\u017e povrchov\u00e1 teplota dos\u00e1hne bodu varu. Ne\u017e se povrchov\u00e1 vrstva odpa\u0159\u00ed, spodn\u00ed vrstva dos\u00e1hne bodu t\u00e1n\u00ed, co\u017e usnad\u0148uje vytvo\u0159en\u00ed dobr\u00e9ho tavn\u00e9ho svaru.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"h-laser-pulse-waveform\"><strong>Laser <\/strong><strong>P<\/strong><strong>ulse <\/strong><strong>W<\/strong><strong>aveform<\/strong><strong><\/strong><\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Tvar vlny laserov\u00e9ho pulsu je d\u016fle\u017eitou ot\u00e1zkou p\u0159i laserov\u00e9m sva\u0159ov\u00e1n\u00ed, zejm\u00e9na p\u0159i sva\u0159ov\u00e1n\u00ed plech\u016f. Kdy\u017e laserov\u00fd paprsek vysok\u00e9 intenzity dopadne na povrch materi\u00e1lu, 60~98% laserov\u00e9 energie se odraz\u00ed a ztrat\u00ed na kovov\u00e9m povrchu a odrazivost se m\u011bn\u00ed s teplotou povrchu. B\u011bhem laserov\u00e9ho pulsu se v\u00fdrazn\u011b m\u011bn\u00ed odrazivost kovu.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"h-laser-pulse-width\"><strong>Laser <\/strong><strong>P<\/strong><strong>ulse <\/strong><strong>W<\/strong><strong>idth<\/strong><strong><\/strong><\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u0160\u00ed\u0159ka pulzu je jedn\u00edm z d\u016fle\u017eit\u00fdch parametr\u016f sva\u0159ov\u00e1n\u00ed pulzn\u00edm laserem. Nen\u00ed to jen d\u016fle\u017eit\u00fd parametr odli\u0161n\u00fd od \u00fab\u011bru materi\u00e1lu a taven\u00ed materi\u00e1lu, ale tak\u00e9 kl\u00ed\u010dov\u00fd parametr, kter\u00fd ur\u010duje cenu a objem zpracovatelsk\u00e9ho za\u0159\u00edzen\u00ed.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>Vliv mno\u017estv\u00ed rozost\u0159en\u00ed na kvalitu sva\u0159ovac\u00edho stroje<\/strong><\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Laserov\u00e9 sva\u0159ov\u00e1n\u00ed obvykle vy\u017eaduje ur\u010dit\u00e9 rozost\u0159en\u00ed, proto\u017ee hustota v\u00fdkonu ve st\u0159edu bodu v ohnisku laseru je p\u0159\u00edli\u0161 vysok\u00e1 a snadno se odpa\u0159\u00ed do otvoru. V ka\u017ed\u00e9 rovin\u011b vzd\u00e1len\u00e9 od laserov\u00e9ho ohniska je rozlo\u017een\u00ed hustoty v\u00fdkonu relativn\u011b jednotn\u00e9. Existuj\u00ed dv\u011b metody rozost\u0159en\u00ed: pozitivn\u00ed rozost\u0159en\u00ed a negativn\u00ed rozost\u0159en\u00ed. Pokud je ohniskov\u00e1 rovina nad obrobkem, jedn\u00e1 se o kladn\u00e9 rozost\u0159en\u00ed, v opa\u010dn\u00e9m p\u0159\u00edpad\u011b o z\u00e1porn\u00e9 rozost\u0159en\u00ed. Podle teorie geometrick\u00e9 optiky, kdy\u017e je vzd\u00e1lenost mezi pozitivn\u00ed a negativn\u00ed rovinou rozost\u0159en\u00ed a sva\u0159ovac\u00ed rovinou stejn\u00e1, je hustota v\u00fdkonu v odpov\u00eddaj\u00edc\u00ed rovin\u011b p\u0159ibli\u017en\u011b stejn\u00e1, ale tvar z\u00edskan\u00e9 roztaven\u00e9 l\u00e1zn\u011b je ve skute\u010dnosti jin\u00fd. Kdy\u017e je rozost\u0159en\u00ed z\u00e1porn\u00e9, lze z\u00edskat v\u011bt\u0161\u00ed hloubku pr\u016fniku, co\u017e souvis\u00ed s procesem tvorby roztaven\u00e9 l\u00e1zn\u011b.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Experimenty uk\u00e1zaly, \u017ee laserov\u00fd oh\u0159ev 50~200us materi\u00e1lu se za\u010d\u00edn\u00e1 tavit, tvo\u0159\u00ed se tekut\u00fd kov a \u010d\u00e1ste\u010dn\u011b se odpa\u0159uje, tvo\u0159\u00ed se vysokotlak\u00e1 p\u00e1ra a rozst\u0159ikuje se velmi vysokou rychlost\u00ed, p\u0159i\u010dem\u017e vyza\u0159uje oslniv\u00e9 b\u00edl\u00e9 sv\u011btlo. Sou\u010dasn\u011b vysok\u00e1 koncentrace p\u00e1ry zp\u016fsob\u00ed, \u017ee se tekut\u00fd kov p\u0159esune k okraji roztaven\u00e9 l\u00e1zn\u011b a vytvo\u0159\u00ed prohlube\u0148 ve st\u0159edu roztaven\u00e9 l\u00e1zn\u011b. Kdy\u017e je rozost\u0159en\u00ed z\u00e1porn\u00e9, je vnit\u0159n\u00ed hustota energie materi\u00e1lu vy\u0161\u0161\u00ed ne\u017e hustota povrchu a je snadn\u00e9 vytvo\u0159it siln\u011bj\u0161\u00ed taven\u00ed a odpa\u0159ov\u00e1n\u00ed, tak\u017ee sv\u011bteln\u00e1 energie m\u016f\u017ee b\u00fdt p\u0159enesena do hlub\u0161\u00ed \u010d\u00e1sti materi\u00e1lu. Proto se v praktick\u00fdch aplikac\u00edch, kdy je po\u017eadov\u00e1na velk\u00e1 hloubka pr\u016fniku, pou\u017e\u00edv\u00e1 negativn\u00ed rozost\u0159en\u00ed; kdy\u017e se sva\u0159uje tenk\u00fd materi\u00e1l, m\u011blo by se pou\u017e\u00edt pozitivn\u00ed rozost\u0159en\u00ed.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"h-welding-speed\"><strong>Sva\u0159ov\u00e1n\u00ed <\/strong><strong>S<\/strong><strong>\u010d\u016frat<\/strong><strong><\/strong><\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Rychlost sva\u0159ov\u00e1n\u00ed ovlivn\u00ed tepeln\u00fd p\u0159\u00edkon za jednotku \u010dasu. Pokud je rychlost sva\u0159ov\u00e1n\u00ed p\u0159\u00edli\u0161 pomal\u00e1, vnesen\u00e9 teplo bude p\u0159\u00edli\u0161 velk\u00e9, co\u017e zp\u016fsob\u00ed prop\u00e1len\u00ed obrobku. Pokud je rychlost sva\u0159ov\u00e1n\u00ed p\u0159\u00edli\u0161 vysok\u00e1, tepeln\u00fd p\u0159\u00edkon bude p\u0159\u00edli\u0161 mal\u00fd a obrobek nebude prova\u0159en.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-laser-welding-characteristics\"><strong>Vlastnosti laserov\u00e9ho sva\u0159ov\u00e1n\u00ed<\/strong><\/h3>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img class=\"wd-lazy-fade\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/mydery.com\/wp-content\/themes\/woodmart\/images\/lazy.svg\" data-src=\"http:\/\/mydery.com\/wp-content\/uploads\/2021\/08\/Laser-Welding-Machine.jpg\" alt=\"Laserov\u00fd sva\u0159ovac\u00ed stroj\" title=\"\" srcset=\"\" data-srcset=\"https:\/\/mydery.com\/wp-content\/uploads\/2021\/08\/Laser-Welding-Machine.jpg 500w, https:\/\/mydery.com\/wp-content\/uploads\/2021\/08\/Laser-Welding-Machine-300x300.jpg 300w, https:\/\/mydery.com\/wp-content\/uploads\/2021\/08\/Laser-Welding-Machine-150x150.jpg 150w, https:\/\/mydery.com\/wp-content\/uploads\/2021\/08\/Laser-Welding-Machine-12x12.jpg 12w\" sizes=\"(max-width: 500px) 100vw, 500px\" \/><figcaption class=\"wp-element-caption\">Laserov\u00fd sva\u0159ovac\u00ed stroj<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Pat\u0159\u00ed k tavn\u00e9mu sva\u0159ov\u00e1n\u00ed, kter\u00e9 vyu\u017e\u00edv\u00e1 jako zdroj energie laserov\u00fd paprsek k dopadu na sva\u0159ovan\u00fd spoj.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Laserov\u00fd paprsek m\u016f\u017ee b\u00fdt veden ploch\u00fdm optick\u00fdm prvkem (jako je zrcadlo) a pot\u00e9 je pou\u017eit reflexn\u00ed zaost\u0159ovac\u00ed prvek nebo \u010do\u010dka k prom\u00edt\u00e1n\u00ed paprsku na svar.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Laserov\u00e9 sva\u0159ov\u00e1n\u00ed je bezkontaktn\u00ed sva\u0159ov\u00e1n\u00ed. B\u011bhem provozu nen\u00ed vy\u017eadov\u00e1n \u017e\u00e1dn\u00fd tlak, ale je vy\u017eadov\u00e1n inertn\u00ed plyn, aby se zabr\u00e1nilo oxidaci roztaven\u00e9 l\u00e1zn\u011b. Ob\u010das se pou\u017e\u00edv\u00e1 p\u0159\u00eddavn\u00fd kov.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Laserov\u00e9 sva\u0159ov\u00e1n\u00ed m\u016f\u017ee b\u00fdt kombinov\u00e1no se sva\u0159ov\u00e1n\u00edm MIG za \u00fa\u010delem vytvo\u0159en\u00ed hybridn\u00edho laserov\u00e9ho sva\u0159ov\u00e1n\u00ed MIG, aby se dos\u00e1hlo sva\u0159ov\u00e1n\u00ed s velk\u00fdm pr\u016fvarem, a z\u00e1rove\u0148 je tepeln\u00fd p\u0159\u00edkon zna\u010dn\u011b sn\u00ed\u017een ve srovn\u00e1n\u00ed se sva\u0159ov\u00e1n\u00edm MIG.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-advantage-and-shortcoming\"><strong>V\u00fdhoda A Nedostatek<\/strong><strong><\/strong><\/h3>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"h-advantage\"><strong>A<\/strong><strong>v\u00fdhoda<\/strong><strong><\/strong><\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Mno\u017estv\u00ed vnesen\u00e9ho tepla lze sn\u00ed\u017eit na pot\u0159ebn\u00e9 minimum, rozsah metalografick\u00fdch zm\u011bn tepeln\u011b ovlivn\u011bn\u00e9 z\u00f3ny je mal\u00fd a tak\u00e9 deformace zp\u016fsoben\u00e1 veden\u00edm tepla je nejni\u017e\u0161\u00ed;<\/li>\n\n\n\n<li>Parametry sva\u0159ovac\u00edho procesu jednopr\u016fchodov\u00e9ho sva\u0159ov\u00e1n\u00ed o tlou\u0161\u0165ce 32 mm byly ov\u011b\u0159eny a kvalifikov\u00e1ny, co\u017e m\u016f\u017ee zkr\u00e1tit \u010das pot\u0159ebn\u00fd pro sva\u0159ov\u00e1n\u00ed tlust\u00fdch plech\u016f a dokonce u\u0161et\u0159it pou\u017eit\u00ed p\u0159\u00eddavn\u00e9ho kovu;<\/li>\n\n\n\n<li>Nen\u00ed pot\u0159eba pou\u017e\u00edvat elektrody a nen\u00ed zde \u017e\u00e1dn\u00e1 obava z kontaminace nebo po\u0161kozen\u00ed elektrody. A proto\u017ee se nejedn\u00e1 o proces kontaktn\u00edho sva\u0159ov\u00e1n\u00ed, lze opot\u0159eben\u00ed a deformaci za\u0159\u00edzen\u00ed minimalizovat;<\/li>\n\n\n\n<li>Laserov\u00fd paprsek lze snadno zaost\u0159it, zarovnat a nav\u00e9st pomoc\u00ed optick\u00fdch p\u0159\u00edstroj\u016f. M\u016f\u017ee b\u00fdt um\u00edst\u011bn ve vhodn\u00e9 vzd\u00e1lenosti od obrobku a m\u016f\u017ee b\u00fdt znovu nav\u00e1d\u011bn mezi n\u00e1stroji nebo p\u0159ek\u00e1\u017ekami kolem obrobku. Ostatn\u00ed pravidla sva\u0159ov\u00e1n\u00ed podl\u00e9haj\u00ed v\u00fd\u0161e uveden\u00fdm prostorov\u00fdm omezen\u00edm. Nelze hr\u00e1t<\/li>\n\n\n\n<li>Obrobek lze um\u00edstit do uzav\u0159en\u00e9ho prostoru (po vys\u00e1t\u00ed nebo je vnit\u0159n\u00ed plynov\u00e9 prost\u0159ed\u00ed pod kontrolou);<\/li>\n\n\n\n<li>Laserov\u00fd paprsek m\u016f\u017ee b\u00fdt zaost\u0159en na malou plochu a m\u016f\u017ee sva\u0159ovat mal\u00e9 a t\u011bsn\u011b um\u00edst\u011bn\u00e9 d\u00edly;<\/li>\n\n\n\n<li>\u0160irok\u00e1 \u0161k\u00e1la materi\u00e1l\u016f, kter\u00e9 lze sva\u0159ovat, a r\u016fzn\u00e9 heterogenn\u00ed materi\u00e1ly lze tak\u00e9 vz\u00e1jemn\u011b spojovat;<\/li>\n\n\n\n<li>Je snadn\u00e9 automatizovat vysokorychlostn\u00ed sva\u0159ov\u00e1n\u00ed a lze jej tak\u00e9 ovl\u00e1dat digit\u00e1ln\u011b nebo po\u010d\u00edta\u010dem;<\/li>\n\n\n\n<li>P\u0159i sva\u0159ov\u00e1n\u00ed tenk\u00fdch materi\u00e1l\u016f nebo dr\u00e1t\u016f o tenk\u00e9m pr\u016fm\u011bru nebude tak snadn\u00e9 d\u011blat pot\u00ed\u017ee jako obloukov\u00e9 sva\u0159ov\u00e1n\u00ed;<\/li>\n\n\n\n<li>Nen\u00ed ovlivn\u011bn magnetick\u00fdm polem (obloukov\u00e9 sva\u0159ov\u00e1n\u00ed a sva\u0159ov\u00e1n\u00ed elektronov\u00fdm paprskem je snadn\u00e9) a dok\u00e1\u017ee p\u0159esn\u011b vyrovnat sva\u0159enec;<\/li>\n\n\n\n<li>Lze sva\u0159ovat dva kovy s r\u016fzn\u00fdmi fyzik\u00e1ln\u00edmi vlastnostmi (jako jsou r\u016fzn\u00e9 odpory);<\/li>\n\n\n\n<li>Nen\u00ed vy\u017eadov\u00e1na vakuov\u00e1 nebo rentgenov\u00e1 ochrana;<\/li>\n\n\n\n<li>Pokud je pou\u017eito sva\u0159ov\u00e1n\u00ed pr\u016fchoz\u00edm otvorem, pom\u011br hloubky k \u0161\u00ed\u0159ce svarov\u00e9 housenky m\u016f\u017ee dos\u00e1hnout 10:1;<\/li>\n\n\n\n<li>Za\u0159\u00edzen\u00ed lze p\u0159epnout na p\u0159enos laserov\u00e9ho paprsku na v\u00edce pracovn\u00edch stanic.<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"h-shortcoming\"><strong>S<\/strong><strong>hortcoming<\/strong><strong><\/strong><\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Poloha sva\u0159ence mus\u00ed b\u00fdt velmi p\u0159esn\u00e1 a mus\u00ed b\u00fdt v rozsahu ohniska laserov\u00e9ho paprsku;<\/li>\n\n\n\n<li>Kdy\u017e sva\u0159enec pot\u0159ebuje pou\u017e\u00edt p\u0159\u00edpravek, mus\u00ed b\u00fdt zaji\u0161t\u011bno, \u017ee kone\u010dn\u00e1 poloha sva\u0159ence je zarovn\u00e1na s bodem sva\u0159ov\u00e1n\u00ed dopadan\u00fdm laserov\u00fdm paprskem;<\/li>\n\n\n\n<li>Maxim\u00e1ln\u00ed sva\u0159iteln\u00e1 tlou\u0161\u0165ka je omezena a tlou\u0161\u0165ka pr\u016fniku obrobku je mnohem v\u011bt\u0161\u00ed ne\u017e 19 mm a laserov\u00e9 sva\u0159ov\u00e1n\u00ed nen\u00ed vhodn\u00e9 pro v\u00fdrobn\u00ed linku;<\/li>\n\n\n\n<li>U materi\u00e1l\u016f s vysokou odrazivost\u00ed a vysokou tepelnou vodivost\u00ed, jako je hlin\u00edk, m\u011b\u010f a jejich slitiny, bude sva\u0159itelnost zm\u011bn\u011bna laserem;<\/li>\n\n\n\n<li>P\u0159i sva\u0159ov\u00e1n\u00ed laserov\u00fdm paprskem se st\u0159edn\u00ed a\u017e vysokou energi\u00ed je t\u0159eba pou\u017e\u00edt plazmov\u00fd ovlada\u010d k vytla\u010den\u00ed ionizovan\u00e9ho plynu kolem roztaven\u00e9 l\u00e1zn\u011b, aby se zajistilo, \u017ee se svarov\u00e1 housenka znovu objev\u00ed;<\/li>\n\n\n\n<li>\u00da\u010dinnost p\u0159em\u011bny energie je p\u0159\u00edli\u0161 n\u00edzk\u00e1, obvykle ni\u017e\u0161\u00ed ne\u017e 10%;<\/li>\n\n\n\n<li>Svarov\u00e1 housenka rychle tuhne a mohou existovat obavy z por\u00e9znosti a k\u0159ehnut\u00ed;<\/li>\n\n\n\n<li>Za\u0159\u00edzen\u00ed je drah\u00e9.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Pro odstran\u011bn\u00ed nebo omezen\u00ed vad laserov\u00e9ho sva\u0159ov\u00e1n\u00ed a lep\u0161\u00ed vyu\u017eit\u00ed t\u00e9to vynikaj\u00edc\u00ed sva\u0159ovac\u00ed metody byly navr\u017eeny n\u011bkter\u00e9 dal\u0161\u00ed tepeln\u00e9 zdroje a laserov\u00e9 hybridn\u00ed sva\u0159ovac\u00ed procesy, p\u0159edev\u0161\u00edm laserov\u00e9 a obloukov\u00e9, laserov\u00e9 a plazmov\u00e9 obloukov\u00e9, laserov\u00e9 a induk\u010dn\u00ed tepeln\u00e9 zdroje kompozitn\u00ed sva\u0159ov\u00e1n\u00ed, sva\u0159ov\u00e1n\u00ed du\u00e1ln\u00edm laserov\u00fdm paprskem a v\u00edcepaprskov\u00e9 laserov\u00e9 sva\u0159ov\u00e1n\u00ed atd. Krom\u011b toho byla navr\u017eena r\u016fzn\u00e1 pomocn\u00e1 procesn\u00ed opat\u0159en\u00ed, jako je sva\u0159ov\u00e1n\u00ed laserov\u00fdm p\u0159\u00eddavn\u00fdm dr\u00e1tem (kter\u00e9 lze d\u00e1le rozd\u011blit na sva\u0159ov\u00e1n\u00ed studen\u00fdm dr\u00e1tem a sva\u0159ov\u00e1n\u00ed hork\u00fdm dr\u00e1tem), pomoc\u00ed extern\u00edho magnetick\u00e9ho pole vylep\u0161en\u00e9 laserov\u00e9 sva\u0159ov\u00e1n\u00ed, laserov\u00e9 sva\u0159ov\u00e1n\u00ed v hloubce roztaven\u00e9 l\u00e1zn\u011b \u0159\u00edzen\u00e9 ochrann\u00fdm plynem a laserem podporovan\u00e9 t\u0159ec\u00ed sva\u0159ov\u00e1n\u00ed s m\u00edch\u00e1n\u00edm.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Laser Welding TechnologyLaser Welding TechnologyLaser Welding TechnologyLaser Welding TechnologyLaser Welding TechnologyLaser Welding TechnologyLaser Welding TechnologyLaser Welding TechnologyLaser Welding TechnologyLaser Welding TechnologyLaser Welding TechnologyLaser Welding TechnologyLaser Welding TechnologyLaser Welding TechnologyLaser Welding TechnologyLaser Welding TechnologyLaser Welding TechnologyLaser Welding TechnologyLaser Welding TechnologyLaser Welding TechnologyLaser Welding TechnologyLaser Welding TechnologyLaser Welding TechnologyLaser Welding TechnologyLaser Welding TechnologyLaser Welding TechnologyLaser Welding TechnologyLaser Welding Technology<\/p>","protected":false},"excerpt":{"rendered":"<p>Laserov\u00e9 sva\u0159ov\u00e1n\u00ed je efektivn\u00ed a p\u0159esn\u00e1 metoda sva\u0159ov\u00e1n\u00ed, kter\u00e1 vyu\u017e\u00edv\u00e1 jako zdroj tepla laserov\u00fd paprsek s vysokou hustotou energie. Laserov\u00e9 sva\u0159ov\u00e1n\u00ed je jedn\u00edm z d\u016fle\u017eit\u00fdch aspekt\u016f aplikace technologie zpracov\u00e1n\u00ed laserov\u00e9ho materi\u00e1lu. <\/p>","protected":false},"author":4,"featured_media":12790,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[1024,1025,1023,1026,1027],"class_list":["post-12788","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-laser-cutting-machine","tag-arc-welding","tag-laser-pulse","tag-leaer-welding","tag-power-density","tag-pulse-width"],"jetpack_featured_media_url":"https:\/\/mydery.com\/wp-content\/uploads\/2021\/08\/Laser-welding.jpg","_links":{"self":[{"href":"https:\/\/mydery.com\/cs\/wp-json\/wp\/v2\/posts\/12788","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mydery.com\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mydery.com\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mydery.com\/cs\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/mydery.com\/cs\/wp-json\/wp\/v2\/comments?post=12788"}],"version-history":[{"count":0,"href":"https:\/\/mydery.com\/cs\/wp-json\/wp\/v2\/posts\/12788\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/mydery.com\/cs\/wp-json\/wp\/v2\/media\/12790"}],"wp:attachment":[{"href":"https:\/\/mydery.com\/cs\/wp-json\/wp\/v2\/media?parent=12788"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mydery.com\/cs\/wp-json\/wp\/v2\/categories?post=12788"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mydery.com\/cs\/wp-json\/wp\/v2\/tags?post=12788"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}