Kuki imiyoboro y'ibyuma igomba kuvurwa ubushyuhe?

Igikorwa cyo kuvura ubushyuhe nugutezimbere ibikoresho byububiko bwibyuma, gukuraho imihangayiko isigaye no kunoza imikorere yayo.

Ukurikije intego zitandukanye zo kuvura ubushyuhe, inzira yo gutunganya ubushyuhe irashobora kugabanywamo ibyiciro bibiri: kuvura ubushyuhe bwambere no kuvura ubushyuhe bwa nyuma.

1. Kuvura ubushyuhe bwambere

Intego yo kuvura ubushyuhe bwambere nugutezimbere imashini, gukuraho imihangayiko yimbere no gutegura imiterere ya metallografiya yo kuvura ubushyuhe bwa nyuma. Uburyo bwo kuvura ubushyuhe burimo annealing, bisanzwe, gusaza, kuzimya no kurakara, nibindi.

(1) Gufatanya no Kubisanzwe

Annealing hamwe nibisanzwe bikoreshwa kubushyuhe bukora. Kubyuma bya karubone hamwe nicyuma kivanze kirimo karubone irenga 0.5%, kuvura annealing akenshi bikoreshwa mukugabanya ubukana bwayo kandi byoroshye guca; Ku byuma bya karubone hamwe nicyuma kivanze kirimo karubone kiri munsi ya 0.5%, ubuvuzi busanzwe burafatwa kugirango wirinde gufata igikoresho mugihe cyo gutema. Bikunze gutegurwa nyuma yo gukora ubusa na mbere yo gutunganya nabi.

Why-should-steel-pipes-be-heat-treated1(1)

(2) Kuvura gusaza

Kuvura gusaza bikoreshwa cyane mugukuraho imihangayiko yimbere ikorwa mubikorwa bidafite akamaro.

Kugirango wirinde akazi kenshi ko gutwara, kubice bifite ukuri muri rusange, kuvura gusaza birashobora gutegurwa mbere yo kurangiza. Ariko, kubice bifite ibisobanuro bihanitse bisabwa, gahunda ebyiri cyangwa nyinshi zo kuvura zishaje zizategurwa. Kuvura gusaza mubisanzwe ntabwo bisabwa kubice byoroshye.

(3) Imiterere

Kuzimya no kurakara bivuga ubushyuhe bwo hejuru bwo kuvura nyuma yo kuzimya. Irashobora kubona imiterere ya sorbite imwe kandi nziza kandi ikitegura kugabanya ihinduka mugihe cyo kuzimya hejuru no kuvura nitriding mugihe kizaza. Kubwibyo, kuzimya no gutwarwa nabyo birashobora gukoreshwa nkubuvuzi bwambere.

2. Kuvura ubushyuhe bwa nyuma

Intego yo kuvura ubushyuhe bwa nyuma nugutezimbere imiterere yubukanishi nko gukomera, kwambara birwanya imbaraga.

(1) Kuzimya

Kuzimya birimo kuzimya hejuru no kuzimya. Muri byo, kuzimya hejuru bikoreshwa cyane kubera guhindagurika kwayo, okiside na decarburisation. Byongeye kandi, kuzimya hejuru nabyo bifite ibyiza byimbaraga zo hanze, kwihanganira kwambara neza, gukomera imbere imbere no kurwanya ingaruka zikomeye.

Why-should-steel-pipes-be-heat-treated2

(2) Carburizing kuzimya

Carburizing no kuzimya birakoreshwa mubyuma bike bya karubone hamwe nicyuma gito. Ubwa mbere, ongera karubone yibice byubuso bwibice, kandi ubone ubukana bwinshi nyuma yo kuzimya, mugihe intangiriro ikomeza imbaraga runaka nubukomere bukabije hamwe na plastike.

(3) Umuti wa Nitriding

Nitriding nuburyo bwo kuvura kugirango atome ya azote yinjire hejuru yicyuma kugirango ubone urwego rwibintu birimo azote. Nitriding layer irashobora kunoza ubukana, kwambara, imbaraga zumunaniro no kurwanya ruswa yibice. Nkuko ubushyuhe bwo kuvura nitride buri hasi, deformasiyo ni nto, kandi nitriding igabanutse (muri rusange ntabwo irenze 0,6 ~ 0,7mm), inzira ya nitriding igomba gutegurwa bitinze bishoboka. Kugirango ugabanye guhindagurika mugihe cya nitriding, ubushyuhe bwo hejuru bwo gukuraho ibibazo birasabwa nyuma yo gukata.


Igihe cyo kohereza: Werurwe-04-2022
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