Kedu ígwè na-eguzogide okpomọkụ dị elu?

Kedu ígwè na-eguzogide okpomọkụ dị elu?

E nwere ọtụtụ ụdị ígwè, ma ọrụ ha abụghị kpọmkwem otu.

N'ozuzu, anyị na-ezo aka na ígwè dị elu dị ka "nchara na-eguzogide okpomọkụ". Igwe na-ekpo ọkụ na-ekpo ọkụ na-ezo aka na klas nke ígwè ndị nwere nkwụsị oxidation na ike okpomọkụ dị elu na-eju afọ na ezigbo okpomọkụ na-eguzogide n'okpuru ọnọdụ okpomọkụ dị elu. China malitere imepụta ígwè na-eguzogide okpomọkụ na 1952.

A na-ejikarị ígwè na-eguzogide okpomọkụ na-emepụta ihe ndị na-arụ ọrụ na okpomọkụ dị elu na ndị na-ekpo ọkụ, ọkụ ọkụ ọkụ, igwe ọkụ, ọkụ ọkụ na ụlọ ọrụ mmepụta ihe dị ka ụlọ ọrụ ụgbọ elu na petrochemical. Na mgbakwunye na elu okpomọkụ ike na iguzogide elu okpomọkụ oxidative corrosion, ndị a components na-achọkwa na-eju afọ nguzogide, pụtara ìhè processability na weldability, na ụfọdụ ndokwa kwụsie ike dị ka dị iche iche ojiji.

Enwere ike kewaa ígwè na-eguzogide okpomọkụ n'ime ụdị abụọ dịka ọrụ ya si dị: ígwè mgbochi oxidation na ígwè na-eguzogide okpomọkụ. A na-akpọkwa ígwè mgbochi oxidation ígwè akpụkpọ anụ maka mkpụmkpụ. Igwe ọkụ na-ekpo ọkụ na-ezo aka na nchara nke nwere nguzogide oxidation pụtara ìhè na okpomọkụ dị elu ma nwee nnukwu okpomọkụ.

Enwere ike kewaa nchara na-eguzogide okpomọkụ n'ime austenitic okpomọkụ na-eguzogide ígwè, martensitic okpomọkụ na-eguzogide ígwè, ferritic okpomọkụ na-eguzogide ígwè na pearlite okpomọkụ na-eguzogide ígwè dị ka nhazi nhazi ya.

Igwe na-eguzogide okpomọkụ Austenitic nwere ọtụtụ ihe mejupụtara austenite dị ka nickel, manganese, na nitrogen. Mgbe ọ bụ n'elu 600 ℃, ọ nwere ezi elu-okpomọkụ ike na ndokwa kwụsie ike, na nwere magburu onwe ịgbado ọkụ ọrụ. A na-ejikarị ya eme ihe n'elu 600 ℃ data ike ike nke ọrụ ahụ. Nchara na-eguzogide okpomọkụ nke Martensitic n'ozuzu nwere ọdịnaya chromium nke 7 ruo 13%, ma nwee ike okpomọkụ dị elu, nguzogide oxidation na mmiri vapor corrosion resistance n'okpuru 650 Celsius C, mana weldability ya adịghị mma.

Ferritic ígwè na-eguzogide ọgwụ nwere ihe ndị ọzọ dị ka chromium, aluminum, silicon, wdg, na-eme ndokwa ferrite nke otu oge, nwere ikike pụtara ìhè iguzogide oxidation na elu okpomọkụ ikuku corrosion, ma nwere obere okpomọkụ ike na ukwuu brittleness na ụlọ okpomọkụ. . , Ogbenye weldability. Ihe nchara na-eguzogide okpomọkụ na pearlite bụ tumadi chromium na molybdenum, na mkpokọta ego n'ozuzu anaghị agafe 5%.

Nchekwa ya na-ewepu pearlite, ferrite, na bainite. Ụdị ígwè a nwere ezigbo ike okpomọkụ dị elu na ọrụ nhazi na 500 ℃ 600 ℃, na ọnụahịa dị ala.

A na-eji ya eme ihe n'ọtụtụ ebe iji mee ka akụkụ ndị na-eguzogide okpomọkụ dị n'okpuru 600 ℃. Dị ka ọkpọkọ igwe na-esi mmiri ọkụ, turbine impellers, rotors, fasteners, akwa nrụgide arịa, ọkpọkọ, wdg.