Njira ndi njira yochepetsera mapangidwe a laser welding spatter

Tanthauzo la Splash Defect: Splash mu welding imatanthauza madontho achitsulo osungunuka omwe amatuluka mu dziwe losungunuka panthawi yowelda. Madonthowa amatha kugwa pamalo ozungulira ogwirira ntchito, zomwe zimapangitsa kuti pakhale kuuma komanso kusafanana pamwamba pake, komanso zingayambitse kutayika kwa khalidwe la dziwe losungunuka, zomwe zimapangitsa kuti pakhale mabowo, malo ophulika, ndi zolakwika zina pamwamba pa weld zomwe zimakhudza mawonekedwe a makina a weld.

Kuthira madzi mu welding kumatanthauza madontho achitsulo osungunuka omwe amatuluka mu dziwe losungunuka panthawi yowelding. Madonthowa amatha kugwa pamalo ozungulira ogwirira ntchito, zomwe zimapangitsa kuti pakhale kuuma komanso kusafanana pamwamba pake, komanso zingayambitse kutayika kwa khalidwe la dziwe losungunuka, zomwe zimapangitsa kuti pakhale mabowo, malo ophulika, ndi zolakwika zina pamwamba pa weld zomwe zimakhudza mawonekedwe a makina a weld.

Kugawa kwa Splash:

Kuthira pang'ono: Madontho olimba amapezeka m'mphepete mwa msoko wa weld ndi pamwamba pa zinthuzo, zomwe zimakhudza kwambiri mawonekedwe ake ndipo sizikhudza magwiridwe antchito; Kawirikawiri, malire osiyanitsa ndi akuti dontholo ndi lochepera 20% ya m'lifupi mwa msoko wa weld;

Kutaya kwakukulu: Pali kutayika kwa khalidwe, komwe kumaonekera ngati mabala, malo ophulika, kudula, ndi zina zotero pamwamba pamsoko wothira, zomwe zingayambitse kupsinjika ndi kupsinjika kosagwirizana, zomwe zimakhudza magwiridwe antchito a msoko wothira weld. Cholinga chachikulu ndi pa mitundu iyi ya zolakwika.

Njira yodziwira kufalikira kwa splash:

Kuthira madzi kumawonekera ngati kulowetsa chitsulo chosungunuka mu dziwe losungunuka mbali yolunjika pafupi ndi pamwamba pa madzi osungunula chifukwa cha kuthamanga kwambiri. Izi zitha kuwoneka bwino pachithunzi chili pansipa, pomwe mzere wamadzi umakwera kuchokera ku kusungunuka kwa madzi ndikuwola kukhala madontho, ndikupanga madontho.

Zochitika za Splash

Kuwotcherera kwa laserimagawidwa m'magulu awiri: kutentha koyendetsa ndi kulowetsa madzi mozama.

Kuwotcherera kwa kutentha sikunachitikepo ndi kupopera: Kuwotcherera kwa kutentha kumaphatikizapo kusamutsa kutentha kuchokera pamwamba pa chinthucho kupita mkati, popanda kupopera komwe kumachitika panthawiyi. Njirayi sikutanthauza kuphwanyika kwachitsulo kwambiri kapena kusintha kwa metallurgical.

Kuwotcherera kozama kwambiri ndiye njira yaikulu yomwe kupopera kumachitika: Kuwotcherera kozama kwambiri kumaphatikizapo laser kufika mwachindunji mu chinthucho, kusamutsa kutentha kupita ku chinthucho kudzera m'mabowo a makiyi, ndipo njirayo imakhala yolimba kwambiri, zomwe zimapangitsa kuti ikhale njira yayikulu yomwe kupopera kumachitika.

Monga momwe chithunzichi chasonyezedwera pamwambapa, akatswiri ena amagwiritsa ntchito zithunzi zothamanga kwambiri pamodzi ndi galasi lowonekera bwino lomwe limakhala ndi kutentha kwambiri kuti aone momwe chitseko cha keybow chikuyendera panthawi yowotcherera ndi laser. Zimapezeka kuti laser imagunda khoma lakutsogolo la keybow, kukankhira madziwo kuti ayende pansi, kudutsa keybow ndikufika kumchira wa dziwe losungunuka. Malo omwe laser imalandirira mkati mwa keybow siwokhazikika, ndipo laser ili mu Fresnel absorption state mkati mwa keybow. Ndipotu, ndi mkhalidwe wa refractions ndi mayamwidwe ambiri, kusunga kukhalapo kwa madzi a dziwe losungunuka. Malo a refraction ya laser panthawi iliyonse amasintha ndi ngodya ya khoma la keybow, zomwe zimapangitsa kuti keybow ikhale yozungulira. Malo owala a laser amasungunuka, amasanduka nthunzi, amakakamizidwa, ndikuwonongeka, kotero kugwedezeka kwa peristaltic kumapita patsogolo.

Kuyerekeza komwe kwatchulidwa pamwambapa kumagwiritsa ntchito galasi lowonekera bwino lomwe limatentha kwambiri, lomwe kwenikweni limafanana ndi mawonekedwe a dziwe losungunuka. Kupatula apo, momwe madzi amayendera mu dziwe losungunuka ndi osiyana ndi momwe zinthu zilili. Chifukwa chake, akatswiri ena agwiritsa ntchito ukadaulo wozizira mwachangu. Pa nthawi yothira, dziwe losungunuka limazizira mwachangu kuti lipeze momwe limakhalira nthawi yomweyo mkati mwa dziwe losungiramo makiyi. Zikuoneka bwino kuti laser ikugunda khoma lakutsogolo la dziwe losungiramo makiyi, ndikupanga sitepe. Laser imagwira ntchito pa tsinde ili, kukankhira dziwe losungunuka kuti liziyenda pansi, kudzaza mpata wa dziwe losungiramo makiyi panthawi yopita patsogolo kwa laser, motero kupeza chithunzi choyerekeza cha kayendedwe ka madzi mkati mwa dziwe losungiramo makiyi la dziwe lenileni losungunuka. Monga momwe zasonyezedwera pachithunzi choyenera, kuthamanga kwa chitsulo komwe kumachitika chifukwa cha kuchotsedwa kwa chitsulo chamadzimadzi kumayendetsa dziwe losungunuka lamadzimadzi kuti lidutse khoma lakutsogolo. Bowo la makiyi limapita kumchira wa dziwe losungunuka, likukwera mmwamba ngati kasupe kuchokera kumbuyo ndikukhudza pamwamba pa dziwe losungunuka la mchira. Nthawi yomweyo, chifukwa cha kupsinjika kwa pamwamba (kutsika kwa kutentha kwa pamwamba, kugwedezeka kwakukulu), chitsulo chamadzimadzi chomwe chili mu dziwe losungunuka la mchira chimakokedwa ndi kupsinjika kwa pamwamba kuti chiyende m'mphepete mwa dziwe losungunuka, ndikukhazikika mosalekeza. Chitsulo chamadzimadzi chomwe chingakhazikike mtsogolo chimazunguliranso pansi mpaka kumchira wa dzenje la kiyi, ndi zina zotero.

Chithunzi chojambulidwa cha kuwotcherera kozama kwa chitseko cha laser: A: Kulowera kwa kuwotcherera; B: Mzere wa laser; C: Chitseko cha Keybow; D: Nthunzi yachitsulo, plasma; E: Mpweya woteteza; F: Khoma lakutsogolo la chitseko cha Keybow (kugayidwa kusanayambe); G: Kuyenda kwa zinthu zosungunuka mopingasa kudzera munjira ya chitseko cha Keybow; H: Chiyanjano cholimba cha dziwe losungunuka; I: Njira yotsika ya dziwe losungunuka.

Chidule:

Njira yolumikizirana pakati pa laser ndi zinthu: Laser imagwira ntchito pamwamba pa chinthucho, ndikupanga kuchotsedwa kwamphamvu. Choyamba, chinthucho chimatenthedwa, kusungunuka, ndikusanduka nthunzi. Panthawi ya kusungunuka kwamphamvu, nthunzi yachitsulo imapita mmwamba kuti ipatse dziwe losungunuka mphamvu yobwerera pansi, zomwe zimapangitsa kuti pakhale dzenje la kiyi. Laser imalowa mu dzenje la kiyi ndipo imadutsa njira zingapo zotulutsa ndi kuyamwa, zomwe zimapangitsa kuti nthunzi yachitsulo ikhalebe yosunga dzenje la kiyi; Laser imagwira ntchito makamaka pakhoma lakutsogolo la dzenje la kiyi, ndipo kusungunuka kumachitika makamaka pakhoma lakutsogolo la dzenje la kiyi. Kuthamanga kwa kubwereranso kumakankhira chitsulo chamadzimadzi kuchokera pakhoma lakutsogolo la dzenje la kiyi kuti chizungulire dzenje la kiyi kupita kumchira wa dziwe losungunuka. Madzi oyenda mofulumira kwambiri kuzungulira dzenje la kiyi adzakhudza dziwe losungunuka mmwamba, ndikupanga mafunde okwera. Kenako, motsogozedwa ndi mphamvu ya pamwamba, amasunthira m'mphepete ndikulimba munthawi yotereyi. Kuphulika kumachitika makamaka m'mphepete mwa kutsegula kwa dzenje la kiyi, ndipo chitsulo chamadzimadzi pakhoma lakutsogolo chidzadutsa dzenje la kiyi ndikukhudza malo a dziwe losungunuka lakumbuyo.