Igwe ịgbado ọkụ nke laser bụ ụdị ngwa ịgbado ọkụ nke a na-ejikarị na mmepụta ụlọ ọrụ, ọ bụkwa igwe dị mkpa maka nhazi ihe eji eme laser. Site na mmalite nke igwe ịgbado ọkụ laser ruo na teknụzụ ugbu a ejirila nke nta nke nta tozuo oke, ọtụtụ ụdị igwe eji agbado ọkụ ewepụtara, gụnyere igwe ịgbado ọkụ laser ejiri aka mee ihe, onye enyemaka dị ike maka ịgbado ọkụ.
Kedu ihe kpatara eji gas mkpuchi mgbe ị na-eji igwe ịgbado ọkụ laser ejiri aka mee? Aka-ẹkenịmde laser ịgbado ọkụ igwe bụ ọhụrụ ụdị ịgbado ọkụ usoro, tumadi maka ịgbado ọkụ mkpa-walled ihe na nkenke akụkụ, nke nwere ike na-aghọta ntụpọ ịgbado ọkụ, butt ịgbado ọkụ, n'apata ịgbado ọkụ, akara ịgbado ọkụ, wdg, na elu omimi ruru, obere weld obosara, na okpomọkụ Obere emetụtara mpaghara, obere deformation, ngwa ngwa ịgbado ọkụ ọsọ, ezigbo ma ọ bụ mkpa dị mfe ọgwụgwọ dị elu na-eji akwa welding, ire ụtọ ma ọ bụ mkpa naanị dị mfe ọgwụgwọ seam na akwa weld. weld seam, enweghị porosity, akara ziri ezi, obere ntụpọ ntụpọ, nnukwu n'ọnọdu ziri ezi, mfe ịghọta akpaaka.
1. Ọ nwere ike ichebe oghere na-elekwasị anya site na mmetọ uzuoku igwe na ịgbasa mmiri mmiri.
Gas na-echebe ya nwere ike ichebe oghere na-elekwasị anya nke igwe ịgbado ọkụ laser site na mmetọ ikuku metal na sputtering nke mmiri mmiri, ọkachasị na ịgbado ọkụ dị elu, n'ihi na nchụpụ ahụ na-adị ike nke ukwuu, ọ dịkwa mkpa iji chebe oghere n'oge a.
2. Shielding gas dị irè n'ịchụpụ ihe nchebe plasma site na ịgbado ọkụ laser dị elu
Uzuzu igwe na-amịkọrọ eriri laser wee banye n'ime igwe ojii plasma, na gas na-echebe gburugburu ikuku igwe na-emekwa ionized n'ihi okpomọkụ. Ọ bụrụ na plasma dị ukwuu dị, plasma na-eritụ ọkụ laser. Plasma dị n'elu ebe a na-arụ ọrụ dị ka ike nke abụọ, nke na-eme ka ntinye ya ghara ịdị omimi na elu nke ọdọ mmiri weld gbasaa.
A na-abawanye ọnụego nchikota nke electrons site n'ịbawanye nhụta anụ ahụ atọ nke electrons nwere ion na atom na-anọpụ iche iji belata njupụta elektrọn na plasma. Ka atom ndị na-anọpụ iche na-anọpụ iche na-adịkwu ọkụ, na-adị elu karịa oge nkukota na ọnụ ọgụgụ nchikota dị elu; N'aka nke ọzọ, naanị gas na-echebe na ike ionization dị elu agaghị eme ka njupụta electron dịkwuo elu n'ihi ionization nke gas n'onwe ya.
3.The na-echebe gas nwere ike ichebe workpiece si ọxịdashọn n'oge ịgbado ọkụ
Igwe ịgbado ọkụ laser ga-eji ụdị gas maka ya nchebe, na usoro ihe omume kwesịrị ịtọ n'ụzọ dị otú ahụ na-echebe gas na-ebu ụzọ pụta na mgbe ahụ na laser pụta, ka egbochi oxidation nke pulsed laser n'oge na-aga n'ihu nhazi. The inert gas nwere ike ichekwa ọdọ mmiri a wụrụ awụ. Mgbe ụfọdụ ihe na-welded n'agbanyeghị nke elu ọxịdashọn, nchebe nwere ike ghara atụle, ma n'ihi na ọtụtụ ngwa, helium, argon, nitrogen na ndị ọzọ gas na-ejikarị dị ka ihe nchebe iji gbochie workpiece si welded n'oge ịgbado ọkụ. n'okpuru oxidation.
4.The imewe nke nozzle oghere
A na-agbanye gas na-echebe ya na nrụgide ụfọdụ site na nozzle ka iru elu nke workpiece. Ọdịdị hydrodynamic nke nozzle na dayameta nke ntinye dị oke mkpa. Ọ ga-abụ nke buru ibu iji kwọọ gas na-efesa efesa iji kpuchie elu igwe ịgbado ọkụ, mana ka e wee chebe oghere ahụ nke ọma ma gbochie ikuku ígwè ka ọ ghara imebi ma ọ bụ ịgbasa ígwè ka ọ ghara imebi oghere ahụ, a ga-enwekwa oke nha nke nozzle. E kwesịkwara ịchịkwa ọnụ ọgụgụ na-asọ asọ, ma ọ bụghị ya, ikuku laminar nke gas na-echebe ga-adị mgbagwoju anya, ikuku ga-etinyekwa aka na ọdọ mmiri a wụrụ awụ, na-emecha mepụta pores.
Na ịgbado ọkụ laser, gas na-echebe ga-emetụta ọdịdị weld, ịdị mma weld, ntinye weld na obosara ntinye. N'ọtụtụ ọnọdụ, ịfụ gas na-echebe ga-enwe mmetụta dị mma na weld, ma ọ pụkwara iweta mmetụta ọjọọ.
Ọrụ dị mma:
1) The ziri ezi ịfụ nke na-echebe gas ga-n'ụzọ dị irè na-echebe weld ọdọ mmiri iji belata ma ọ bụ ọbụna zere ọxịdashọn;
2) Ịfụ nke ọma nke gas na-echebe nwere ike ibelata spatter a na-emepụta n'oge ịgbado ọkụ;
3) Ịfụ nke ọma nke gas na-echebe nwere ike ịkwalite otu ịgbasa nke ọdọ mmiri weld mgbe ọ na-eme ka ọ dị mma, na-eme ka ọdịdị weld ahụ bụrụ otu ma mara mma;
4) Ịfụ ọkụ nke ọma nke gas na-echebe nwere ike belata mmetụta nchebe nke igwe vapor plume ma ọ bụ plasma igwe na laser, ma mee ka ọnụọgụ laser dị irè;
5) Ezi ịfụ nke gas na-echebe nwere ike belata weld porosity nke ọma.
Ọ bụrụhaala na ụdị gas ahụ, ọnụego gas na-agbapụta, nhọrọ ọnọdụ ịfụ ọkụ ziri ezi, nwere ike nweta mmetụta dị mma. Otú ọ dị, iji gas nchebe na-ezighị ezi ga-ewetakwa mmetụta ọjọọ na ịgbado ọkụ.
Mmetụta ọjọọ:
1) Mkpuchi na-ezighi ezi nke gas na-echebe nwere ike ịkpata welds adịghị mma:
2) Ịhọrọ ụdị gas na-ezighị ezi nwere ike ime ka ọkpụkpụ dị na weld, ma nwee ike ime ka mbelata ihe ndị na-arụ ọrụ nke weld;
3) Ịhọrọ na-ezighị ezi gas ịfụ eru eruba ọnụego nwere ike iduga ọzọ oxidation oxidation nke weld (ma eruba ọnụego bụ oke ibu ma ọ bụ obere), na nwekwara ike ime ka weld ọdọ mmiri metal na-oké nsogbu n'obi site mpụga agha, na-akpata weld ida ma ọ bụ na-erughị eru akpụ;
4) Ịhọrọ usoro ịgbanye gas na-ezighị ezi ga-eme ka weld ghara iji nweta mmetụta nchebe ma ọ bụ ọbụna na-enweghị mmetụta nchebe ma ọ bụ nwee mmetụta na-adịghị mma na nhazi weld;
5) Mkpuchi nke gas na-echebe ga-enwe mmetụta ụfọdụ na ntinye nke weld, karịsịa mgbe ị na-agbanye efere dị nro, ọ ga-ebelata ntinye nke weld.
N'ozuzu, a na-eji helium eme ihe dị ka gas na-echebe, nke nwere ike igbochi plasma ruo n'ókè kasị ukwuu, si otú ahụ na-amụba omimi ntinye ma na-amụba ọsọ ịgbado ọkụ; na ọ dị mfe na ibu ma nwee ike ịgbapụ, ma ọ dịghị mfe ime ka pores. N'ezie, site na mmetụta ịgbado ọkụ anyị n'ezie, mmetụta nke iji nchebe argon adịghị njọ.
Ọ bụrụ na ịchọrọ ịmatakwu gbasara ịgbado ọkụ laser, ma ọ bụ chọọ ịzụta igwe ịgbado ọkụ laser kacha mma maka gị,biko hapụ ozi na webụsaịtị anyị ma zitere anyị email ozugbo!
Oge nzipu: Feb-04-2023
