Nkà na ụzụ ọhụụ ọhụrụ

Corrosion na-eguzogide ọgwụ alloy castings isi okpomọkụ ọgwụgwọ na-egbochi:

• 1) Quenching na temper ọgwụgwọ. Tumadi iji nweta martensite ma gbochie ọdịda carbide; imenyụ na iwe bụ iwepu imenyụ nrụgide ma melite ike.
• 2) mmezi + iwe. Ngwongwo na-eguzogide corrosion nke carbon-carbon dị ala nwere obere nickel, molybdenum, silicon na ihe ndị ọzọ, mgbe ha kwusịrị ọgwụgwọ + na-ewe iwe, a na-emezi ihe ndị na-arụ ọrụ igwe.

Nchara na-eguzogide ọgwụ na Ferritic, ụdị ọla a nwere w (C) ≤ 0.12% na w (Cr) n’etiti 15-20%. Main okpomọkụ usoro ọgwụgwọ:

• 1) dika-igba;
• 2) Mgbakwunye. Annealing okpomọkụ ekwesịghị ịdị ala karịa 540 ° C, ma ọ bụ karịa 850 Celsius C.

N'oge usoro kpo oku, mgbe ọnọdụ okpomọkụ ruru 350 Celsius C, a na-etinye okpomọkụ ikpeazụ maka oge iji zere nnukwu nrụgide na nkedo.

Austenitic corrosion na-eguzogide ọgwụ nchara, na-ahụkarị ígwè ọkwa bụ 1Cr18Ni9Ti. Main okpomọkụ usoro ọgwụgwọ:

• 1) Ngwọta siri ike. Nkedo a na-ekpo ọkụ na 950-1175 Celsius C, ọ ka mma ịnabata usoro nke ịmị ọkụ na obere okpomọkụ ma wee kpoo ngwa ngwa na okpomọkụ.
• 2) Ngwọta siri ike + ọgwụgwọ ọgwụgwọ. Mgbe ọgwụgwọ ngwọta siri ike nke ihe alloy dị ka titanium bismuth, a ga-eme ka ọ kwụsie ike. Nke ahụ bụ, a na-emegharị mgbatị ahụ na 850-930 Celsius wee mezie ngwa ngwa. Iji gbochie mmiri ozuzo nke chromium carbide, melite iguzogide corrosion intergranular.

Ọdịda mmiri na-eme ka nchara na-eguzogide ọgwụ, ahụkarị nchara ọkwa bụ ZGCr17Ni4Cu2. Usoro ọgwụgwọ ọkụ bụ ihe ngwọta siri ike + na-eme ka ịka nká sie ike, ọnọdụ okpomọkụ bụ 1020-1060 Celsius C, na afọ na-eme ka okpomọkụ sie ike bụ 560-650 Celsius C.

Rosgwè na-eguzogide corrosion na-eguzogide, Ngwongwo nkedo na-eguzogide corrosion nwere otu mmewere dika silicon, aluminom, chromium, nickel ma obu ihe ndi mejuputara ha. Iji meziwanye akụrụngwa akụrụngwa zuru ezu, a na-agbakwunye ihe ndị dị ka ọla kọpa na ụwa na-adịghị ahụkebe, na ihe ndị dị otú ahụ siri ike na ihe na-eguzogide corrosion. Usoro ọgwụgwọ okpomọkụ bụ iji kpochapụ nrụgide dị n'ime na annealing obere okpomọkụ.

Njikọ na akụkọ a ： Metallurgical technology nke corrosion eguzogide nchara alloy oge ọgbụgba

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