Akụkọ

Ịgbaze Mmanya Vacuum
Emepụtara nkedo Vacuum (vacuum induction melting - VIM) maka nhazi nke alloys pụrụ iche na nke pụrụ iche, ya mere ọ na-aghọwanye ebe a na-ahụkarị ka a na-eji ihe ndị a dị elu arụ ọrụ. Emepụtara VIM ka ọ gbazee na nkedo superalloys na nchara siri ike, ọtụtụ n'ime ha na-achọ nhazi oghere n'ihi na ha nwere ihe mgbagha na ihe na-emeghachi omume dịka Ti, Nb na Al. Enwere ike iji ya mee ihe maka igwe anaghị agba nchara na ọla ndị ọzọ mgbe achọrọ mgbaze mbụ dị elu.

Dị ka aha ahụ na-egosi, usoro a gụnyere ịgbaze ígwè n'okpuru ọnọdụ agụụ. A na-eji ntinye ọkụ eletrik eme ihe dị ka isi iyi ike maka agbaze ọla. Mgbaze mgbaze induction na-arụ ọrụ site n'ịkwalite mmiri ọkụ eletrik na igwe. Isi mmalite bụ eriri induction, nke na-ebu mmiri ọzọ. Igwe mmiri na-ekpo ọkụ na-ekpo ọkụ ma mechaa gbazee ụgwọ ahụ.

Igwe ọkụ ahụ nwere jaket igwe na-ekpo ọkụ na-ekpo ọkụ, nke nwere ike iguzogide oghere achọrọ maka nhazi. A na-agbaze ọla ahụ n'ime mkpọ a na-etinye n'ime eriri induction nke jụrụ oyi, a na-ejikwa ọkụ ọkụ na-agbanyekarị ihe mgbakwasa kwesịrị ekwesị.

Ọla na alloys ndị nwere oke mmekọrịta maka gas - karịsịa nitrogen na oxygen - na-agbazekarị / nụchaa n'ime ọkụ induction oghere iji gbochie mmetọ / mmeghachi omume na gas ndị a. Ya mere, a na-ejikarị usoro a eme ihe maka nhazi nke ihe dị oke ọcha ma ọ bụ ihe ndị nwere nkwado siri ike na ihe mejupụtara kemịkalụ.

Ajụjụ: Gịnị kpatara eji agbaze oghere induction?

A: Ebubere mgbaze induction oghere maka nhazi nke alloys pụrụ iche na nke pụrụ iche ma na-aghọwanye ebe a na-ahụkarị ka a na-eji ihe ndị a dị elu arụ ọrụ. Ọ bụ ezie na e mepụtara ya maka ihe ndị dị ka superalloys, a pụkwara iji ya mee ihe maka igwe anaghị agba nchara na ọla ndị ọzọ.
Kedu ka aoghere induction ọkụọrụ?
A na-ebuba ihe n'ime ọkụ induction n'okpuru oghere ma tinye ike iji gbazee ụgwọ ahụ. A na-akwụ ụgwọ ndị ọzọ iji weta olu igwe mmiri mmiri na ikike agbaze achọrọ. A na-anụcha ọla a wụrụ awụ n'okpuru oghere ma gbanwee kemistiri ahụ ruo mgbe enwetara kemịlụ gbazere nke ọma.
Kedu ihe na-eme metal na oghere?
Karịsịa, ọtụtụ ọla na-etolite oyi akwa oxide n'elu ihe ọ bụla nke ikuku na-ekpuchi. Nke a na-arụ ọrụ dị ka ọta iji gbochie njikọ. N'ime oghere nke oghere, ọ dịghị ikuku nke mere na ọla agaghị etolite oyi akwa.

Uru nke VIM Melting
Dabere na ngwaahịa na usoro metallurgical, oghere oghere n'oge oge nchacha dị na nso nke 10-1 ruo 10-4 mbar. Ụfọdụ uru metallurgical nke nhazi oghere bụ:
Na-agbaze n'okpuru ikuku oxygen na-enweghị oxygen na-egbochi ntinye nke oxide na-abụghị ọla ma gbochie oxidation nke ihe na-emeghachi omume.
Mmezu nke nnabata ihe mejupụtara ya na ihe dị n'ime gas dị nso
Mwepụ nke ihe nchọta achọghị ya na nrụgide ikuku dị elu
Mwepụ nke gas gbazere - oxygen, hydrogen, nitrogen
Ndozi nke kpọmkwem na homogeneous alloy mejupụtara na gbazee okpomọkụ
Na-agbaze n'ime oghere na-ewepụ mkpa mkpuchi slag na-echebe ma na-ebelata ikike nke mmetọ slag na mberede ma ọ bụ ntinye na ingot.
N'ihi nke a, arụ ọrụ metallurgical dị ka dephosphorization na desulphurization dị oke. Metallurgy VIM bụ isi maka mmeghachi omume na-adabere na nrụgide, dị ka mmeghachi omume nke carbon, oxygen, nitrogen na hydrogen. Mwepụ ihe ndị na-emerụ ahụ, ndị na-agbanwe agbanwe, dị ka antimony, tellurium, selenium na bismuth, n'ime ọkụ induction oghere dị ezigbo mkpa.

Nleba anya nke mmeghachi omume na-adabere na nrụgide nke oke carbon iji mechaa deoxidation bụ naanị otu ihe atụ nke mgbanwe usoro site na iji usoro VIM maka mmepụta nke superalloys. Ihe ndị ọzọ na-abụghị superalloys ka a na-ekpochapụ, desulfurized ma ọ bụ ahọpụtara nke ọma n'ime ọkụ induction oghere iji zute nkọwapụta na nkwa ihe onwunwe. N'ihi nnukwu ike ikuku nke ọtụtụ ihe nchọta na-adịghị mma, enwere ike ibelata ha ka ọ bụrụ ọkwa dị ala site na ntughari n'oge mgbaze induction oghere, ọkachasị maka alloys nwere nnukwu ike na oke arụ ọrụ. Maka alloys dị iche iche nke ga-enwerịrị ihe kacha mma chọrọ, ọkụ induction oghere bụ usoro mgbaze kacha dabara adaba.

Ụzọ ndị a nwere ike ijikọ ngwa ngwa na usoro VIM iji mepụta agbaze dị ọcha:
Njikwa ikuku nwere obere ntapu na ọnụego desorption
Nhọrọ nke ihe mgbagha kwụsiri ike maka mkpuchi crucible
Na-akpali na homogenization site electromagnetic ịkpali ma ọ bụ ihicha gas
Kpọmkwem njikwa okpomọkụ iji wedata mmeghachi omume nhụsianya na agbaze
Usoro nzacha na nzacha dabara adaba n'oge usoro nkedo
Ngwa nke ịsa akwa kwesịrị ekwesị na usoro tundish maka iwepụ oxide ka mma.