1. Ihe nkiri oxide:
Aluminom dị mfe oxidize na ikuku na n'oge ịgbado ọkụ. Ihe na-esi na aluminum oxide (Al2O3) nwere ebe mgbaze dị elu, kwụsiri ike, ma sie ike iwepụ. Ọ na-egbochi mgbaze na ngwakọta nke ihe nne na nna. Ihe nkiri oxide nwere nnukwu ike ndọda ma ọ dịghị mfe ịfe n'elu. Ọ dị mfe ịmepụta ntụpọ dị ka ntinye slag, ngwakọta ezughị ezu, na ntinye ezughị ezu.
Ihe nkiri oxide elu nke aluminom na nnabata nke oke mmiri nwere ike ibute pores na weld ngwa ngwa. Tupu ịgbado ọkụ, ekwesịrị iji ụzọ kemịkalụ ma ọ bụ igwe arụrụ arụ na-ehicha nke ọma ma wepụ ihe nkiri oxide n'elu.
Mee ka nchebe dị ike n'oge usoro ịgbado ọkụ iji gbochie oxidation. Mgbe ị na-eji tungsten inert gas ịgbado ọkụ, jiri ike AC wepụ ihe nkiri oxide site na mmetụta "cathode Cleaning".
Mgbe ị na-eji ịgbado ọkụ gas, jiri mmiri na-ewepụ ihe nkiri oxide. Mgbe ị na-agbado nnukwu efere, ọkụ ịgbado ọkụ nwere ike mụbaa. Dịka ọmụmaatụ, helium arc nwere nnukwu okpomọkụ, a na-ejikwa helium ma ọ bụ argon-helium agwakọta gas maka nchebe, ma ọ bụ nnukwu agbaze electrode gas na-ekpuchi ọkụ. N'ihe gbasara njikọ dị mma ugbu a, "nhicha cathode" adịghị achọ.
2. High thermal conductivity
The thermal conductivity na kpọmkwem ike okpomọkụ nke aluminom na aluminum alloys bụ ihe okpukpu abụọ nke carbon ígwè na ala alloy ígwè. The thermal conductivity nke aluminom bụ ihe karịrị ugboro iri nke austenitic igwe anaghị agba nchara.
N'oge usoro ịgbado ọkụ, nnukwu ọkụ nwere ike ịme ngwa ngwa n'ime metal ala. Ya mere, mgbe ị na-agbado aluminom na aluminum alloys, na mgbakwunye na ike a na-eri na ọdọ mmiri a wụrụ awụ, a na-erikwa ọkụ karịa n'akụkụ ndị ọzọ nke ígwè ahụ. Nke a Oriri nke ụdị ume a na-abaghị uru dị mkpa karịa nke ịgbado ọkụ nchara. Iji nweta nkwonkwo welded dị elu, ike nwere ike na-etinye uche na ike dị elu kwesịrị iji mee ihe dị ka o kwere mee, na mgbe ụfọdụ, a pụkwara iji preheating na usoro usoro ndị ọzọ.
3. Nnukwu ọnụọgụ mgbasawanye linear, dị mfe imebi ma mepụta mgbape ọkụ
Ọnụ ọgụgụ mgbasawanye ahịrị nke aluminom na aluminom alloys dị ihe dị ka okpukpu abụọ nke carbon steel na ígwè alloy dị ala. Mbelata olu nke aluminom n'oge siri ike dị ukwuu, na nrụrụ na nrụgide nke weldment dị ukwuu. Ya mere, ọ dị mkpa ka e mee ihe iji gbochie nrụrụ ịgbado ọkụ.
Mgbe ọdọ mmiri a wụrụ awụ welding aluminom siri ike, ọ dị mfe imepụta oghere shrinkage, porosity shrinkage, mgbawa ọkụ na nrụgide dị n'ime.
Ngwá ọrụ ịgbado ọkụ Xinfa nwere njirimara dị elu na ọnụ ala dị ala. Maka nkọwa, biko gaa na:Ndị na-emepụta ịgbado ọkụ na ịkpụ - China Welding & Cutting Factory & Suppliers (xinfatools.com)
Enwere ike ịme ihe iji dozie nhazi nke waya ịgbado ọkụ na usoro ịgbado ọkụ iji gbochie ihe mgbawa ọkụ n'oge mmepụta. Ọ bụrụ na nguzogide corrosion kwadoro, aluminom-silicon alloy welding waya nwere ike iji weld aluminum alloys ndị ọzọ na-abụghị aluminum-magnesium alloys. Mgbe aluminom-silicon alloy nwere silicon 0,5%, ọchịchọ nke mgbawa ọkụ na-adịwanye ukwuu. Ka ọdịnaya silicon na-abawanye, oke okpomọkụ nke crystallization nke alloy na-adị ntakịrị, mmiri mmiri na-abawanye nke ukwuu, ọnụ ọgụgụ nkwụsị na-ebelata, na ọchịchọ nke mgbawa ọkụ na-ebelatakwa ya.
Dị ka ahụmahụ mmepụta, na-ekpo ọkụ cracking agaghị eme mgbe silicon ọdịnaya bụ 5% ka 6%, otú iji SalSi strip (silicon ọdịnaya 4.5% ka 6%) ịgbado ọkụ waya ga-ka mma mgbape mgbochi.
4. Ngwa ngwa igbari hydrogen
Aluminom na aluminom alloys nwere ike igbari nnukwu hydrogen na steeti mmiri mmiri, mana ọ naghị agbaze hydrogen na steeti siri ike. N'oge usoro siri ike na ngwa ngwa dị jụụ nke ọdọ mmiri ịgbado ọkụ, hydrogen enweghị oge ịgbapụ, na oghere hydrogen na-adị mfe. Mmiri dị n'ime ikuku kọlụm arc, mmiri nke ihe nkiri oxide na-eme ka ọ dị n'elu ihe ịgbado ọkụ na metal bụ isi ihe dị mkpa nke hydrogen na weld. Ya mere, a ghaghị ịchịkwa isi iyi nke hydrogen iji gbochie ịmepụta pores.
5. Njikọ na mpaghara okpomọkụ na-emetụta na-adị mfe nro
Alloy ihe dị mfe ikpochapụ na ọkụ, nke na-ebelata arụmọrụ nke weld.
Ọ bụrụ na metal ntọala bụ nrụrụ-ike ma ọ bụ ihe ngwọta siri ike na-eme ka afọ dị ike, ọkụ ịgbado ọkụ ga-ebelata ike nke mpaghara okpomọkụ emetụtara.
Aluminom nwere lattice cubic nwere ihu na enweghị allotropes. Enweghị mgbanwe n'oge okpomọkụ na oyi. Mkpụrụ ọka weld na-akawanye njọ na enweghị ike ịsacha ọka ndị ahụ site na mgbanwe oge.
Usoro ịgbado ọkụ
Enwere ike iji ihe fọrọ nke nta ka ọ bụrụ ụzọ ịgbado ọkụ dị iche iche iji weld aluminum na aluminum alloys, mana aluminom na aluminom alloys nwere mgbanwe dị iche iche na ụzọ ịgbado ọkụ dị iche iche, na ụzọ ịgbado ọkụ dị iche iche nwere oge ngwa nke ha.
Ụzọ ịgbado ọkụ gas na electrode arc ịgbado ọkụ dị mfe na akụrụngwa ma dị mfe iji rụọ ọrụ. Enwere ike iji ịgbado ọkụ gas maka ịrụzi ịgbado ọkụ nke mpempe akwụkwọ aluminom na nkedo na-achọghị ịdị mma ịgbado ọkụ. Enwere ike iji mgbado ọkụ eletrik maka ịrụzi ịgbado ọkụ nke ihe nkedo alloy aluminum.
Usoro ịgbado ọkụ inert gas na-echebe (TIG ma ọ bụ MIG) bụ usoro ịgbado ọkụ nke a na-ejikarị eme ihe maka aluminum na aluminom alloys.
Aluminom na aluminum alloy Ibé akwụkwọ nwere ike welded site tungsten electrode alternating ugbu a argon arc ịgbado ọkụ ma ọ bụ tungsten electrode pulse argon arc ịgbado ọkụ.
Enwere ike ịhazi aluminom na aluminom alloy nnukwu efere site na tungsten helium arc ịgbado ọkụ, argon-helium agwakọta tungsten arc ịgbado ọkụ, gas metal arc ịgbado ọkụ, na pulse metal arc ịgbado ọkụ. Gas metal arc ịgbado ọkụ na pulse gas metal arc ịgbado ọkụ na-esiwanye eji.
Oge nzipu: Jul-25-2024
