Umshini kanye nohlelo lokucindezela lokwakheka kwe-laser welding spatter

Incazelo ye-Splash Defect: I-Splash in welding isho amaconsi ensimbi ancibilikisiwe akhishwa echibini elincibilikisiwe ngesikhathi senqubo yokushisela. Lawa maconsi angase awe endaweni ezungezile yokusebenza, abangele ukuhwala nokungalingani phezulu, futhi angase futhi abangele ukulahlekelwa ikhwalithi yechibi elincibilikisiwe, okuholela emazinyweni, izindawo eziqhumayo, nokunye ukukhubazeka endaweni yokushisela ethinta izici zemishini ze-weld. .

I-Splash in welding isho amaconsi ensimbi ancibilikisiwe akhishwa echibini elincibilikisiwe ngesikhathi senqubo yokushisela. Lawa maconsi angase awe endaweni ezungezile yokusebenza, abangele ukuhwala nokungalingani phezulu, futhi angase futhi abangele ukulahlekelwa ikhwalithi yechibi elincibilikisiwe, okuholela emazinyweni, izindawo eziqhumayo, nokunye ukukhubazeka endaweni yokushisela ethinta izici zemishini ze-weld. .

Ukuhlukaniswa kwe-splash:

Ama-splashes amancane: Amaconsi okuqinisa akhona emaphethelweni e-weld seam nangaphezulu kwempahla, ikakhulukazi athinta ukubukeka futhi angabi nomthelela ekusebenzeni; Ngokuvamile, umngcele wokuhlukanisa ukuthi i-droplet ingaphansi kwama-20% obubanzi be-weld seam fusion;

I-splatter enkulu: Kukhona ukulahlekelwa kwekhwalithi, okubonakaliswa njengama-dent, amaphuzu okuqhuma, ama-undercuts, njll. ebusweni bomthungo we-weld, okungaholela ekucindezelekeni okungalingani nokucindezeleka, okuthinta ukusebenza kwe-weld seam. Okugxilwe kakhulu kulezi zinhlobo zamaphutha.

Inqubo yokwenzeka kwe-splash:

I-Splash ibonakala njengomjovo wensimbi encibilikisiwe echibini elincibilikisiwe uye endaweni ecishe ibe yi-perpendicular ebusweni obuwuketshezi obushiselayo ngenxa yokusheshisa okuphezulu. Lokhu kungabonakala ngokucacile emfanekisweni ongezansi, lapho ikholomu ye-liquid ikhuphuka isuka ekuncibilikeni kwe-welding futhi ibola ibe amaconsi, yenza ama-splashes.

Isigcawu sokwenzeka kwe-Splash

I-laser welding ihlukaniswe ibe yi-thermal conductivity kanye ne-welding yokungena ejulile.

I-Thermal conductivity welding cishe ayinaso isenzakalo se-spatter: I-thermal conductivity welding ihilela ukudluliselwa kokushisa kusuka ebusweni bento kuya ngaphakathi, cishe akukho spatter ekhiqizwa phakathi nenqubo. Inqubo ayibandakanyi ukuhwamuka okukhulu kwensimbi noma ukusabela kwe-metallurgical ngokomzimba.

I-welding yokungena ejulile yisimo esiyinhloko lapho ukuchaphazeka kwenzeka khona: Ukushisela ukungena okujulile kuhilela i-laser efinyelela ngokuqondile endabeni, ukudlulisa ukushisa ezintweni ngokusebenzisa izimbobo zokhiye, futhi ukusabela kwenqubo kunamandla, okwenza kube yisimo esiyinhloko lapho ukuchaphazeka kwenzeka khona.

Njengoba kukhonjisiwe emfanekisweni ongenhla, ezinye izazi zisebenzisa izithombe ezinesivinini esikhulu ezihlanganiswe nezingilazi ezibonisa ngale ezibonisa izinga lokushisa eliphezulu ukuze zibheke isimo sokunyakaza kwembobo kakhiye ngesikhathi sokushisela nge-laser. Kungatholakala ukuthi i-laser ngokuyisisekelo ishaya odongeni olungaphambili lwembobo kakhiye, iphushe uketshezi ukuthi lugeleze luye phansi, ludlule imbobo kakhiye futhi lufike emsileni wechibi elincibilikisiwe. Indawo lapho i-laser itholwa khona ngaphakathi kwembobo kakhiye ayilungisiwe, futhi i-laser isesimweni sokumuncwa kwe-Fresnel ngaphakathi kwembobo kakhiye. Eqinisweni, kuyisimo sokuphindwaphindwa okuningi kanye nokumuncwa, okugcina ubukhona boketshezi lwechibi elincibilikisiwe. Ukuma kwe-laser refraction phakathi nenqubo ngayinye kushintsha ne-engeli yodonga lwembobo kakhiye, okubangela ukuthi imbobo kakhiye ibe sesimweni sokunyakaza okusontekile. Isikhundla se-laser irradiation siyancibilika, siyahwamuka, siyaphoqelelwa, futhi siyawohloka, ngakho-ke ukudlidliza kwe-peristaltic kuya phambili.

Ukuqhathanisa okukhulunywe ngenhla kusebenzisa ingilazi ebonisa ngale enezinga lokushisa eliphezulu, empeleni elilingana nokubuka okuphambene kwechibi elincibilikisiwe. Phela, ukugeleza kwechibi elincibilikisiwe kuhlukile esimweni sangempela. Ngakho-ke, ezinye izazi ziye zasebenzisa ubuchwepheshe bokuqandisa ngokushesha. Phakathi nenqubo yokushisela, ichibi elincibilikisiwe liqhwa ngokushesha ukuze lithole isimo esisheshayo ngaphakathi kwembobo kakhiye. Kungabonakala ngokucacile ukuthi i-laser ishaya udonga lwangaphambili lwembobo yokhiye, yenza isinyathelo. Ilaser isebenza kulo mzila wesinyathelo, isunduza ichibi elincibilikisiwe ukuthi ligeleze liye phansi, ligcwalise igebe lembobo kakhiye phakathi nokuya phambili kwe-laser, futhi ngaleyo ndlela ithole umdwebo olinganiselwe wesiqondiso sokugeleza kokugeleza ngaphakathi kwembobo yokhiye yechibi langempela elincibilikisiwe. Njengoba kuboniswe emfanekisweni ofanele, ingcindezi yensimbi ehlehlayo ekhiqizwa i-laser ablation yensimbi ewuketshezi ishayela uketshezi oluncibilikisiwe ukuze ludlule udonga olungaphambili. Imbobo kakhiye iya ngasemsileni wechibi elincibilikisiwe, ikhuphuka ibheke phezulu njengomthombo ovela ngemuva futhi ithinte ingaphezulu lechibi elincibilikisiwe lomsila. Ngesikhathi esifanayo, ngenxa yokushuba kobuso (ukwehla kwezinga lokushisa elicindezelwayo, umthelela omkhulu kakhulu), insimbi ewuketshezi echibini elincibilikisiwe lomsila idonswa ukushuba kwendawo ukuze iye ngasemaphethelweni echibi elincibilikisiwe, iqinisa ngokuqhubekayo. . Insimbi ewuketshezi engaqiniswa esikhathini esizayo izungeza ibuyele emsila wembobo kakhiye, njalonjalo.

Umdwebo we-Schematic we-laser keyhole yokufaka i-welding ejulile: A: Isiqondiso sokushisela; B: I-Laser beam; C: Imbobo yokhiye; D: Umhwamuko wensimbi, iplasma; E: Igesi evikelayo; F: Udonga lwangaphambili lwembobo yokhiye (ukugaya ngaphambi kokuncibilika); G: Ukugeleza okuvundlile kwezinto ezincibilikisiwe ngendlela yembobo kakhiye; H: I-Melt pool solidification interface; I: Indlela yokugeleza eya phansi yechibi elincibilikisiwe.

Inqubo yokusebenzisana phakathi kwe-laser nezinto ezibonakalayo: I-laser isebenza phezu kwempahla, ikhiqiza ukuphuma okukhulu. Impahla iqala ukushisisa, incibilike, futhi ihwamuke. Ngesikhathi senqubo yokuhwamuka okushubile, umhwamuko wensimbi uya phezulu ukuze unikeze ichibi elincibilikisiwe ingcindezi ehlehlayo yokuhlehla, okuholela embobeni kakhiye. I-laser ingena ku-keyhole futhi idlula izinqubo eziningi zokukhipha kanye nokumuncwa, okuholela ekuhlinzekeni okuqhubekayo komhwamuko wensimbi ogcina imbobo yokhiye; I-laser isebenza kakhulu odongeni olungaphambili lwembobo kakhiye, futhi ukuhwamuka kwenzeka ikakhulukazi odongeni olungaphambili lwembobo kakhiye. Umfutho we-recoil uphusha insimbi ewuketshezi odongeni olungaphambili lwembobo kakhiye ukuze izungeza imbobo kakhiye ibheke emsileni wechibi elincibilikisiwe. Uketshezi oluhamba ngesivinini esiphezulu luzungeze imbobo kakhiye luzothinta ichibi elincibilikisiwe liye phezulu, kwenze amagagasi aphakanyisiwe. Khona-ke, iqhutshwa ukungezwani kwendawo, iya ngasemaphethelweni futhi iqina kumjikelezo onjalo. Ukuchaphazeka kwenzeka ikakhulukazi emaphethelweni embobo kakhiye, futhi insimbi ewuketshezi esodongeni olungaphambili izodlula imbobo kakhiye ngesivinini esikhulu futhi ibe nomthelela endaweni yodonga lwangemuva lwechibi elincibilikisiwe.