Akụkụ igwe anaghị agba nchara

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Igwe anaghị agba nchara bụ otu alloys ferrous nwere opekempe ihe dịka 11% chromium, ihe mejupụtara na-egbochi ígwè ahụ nchara ma na-enyekwa ihe ndị na-egbochi okpomọkụ.Ụdị dị iche iche nke igwe anaghị agba nchara gụnyere carbon carbon (site na 0.03% ruo karịa 1.00%), nitrogen, aluminum, silicon, sọlfọ, titanium, nickel, ọla kọpa, selenium, niobium, na molybdenum.A na-ahọpụta ụdị igwe anaghị agba nchara dị iche iche site na ọnụọgụ ọnụọgụ atọ AISI ha, dịka ọmụmaatụ, igwe anaghị agba nchara 304.

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Okwu mmalite nke akụkụ igwe anaghị agba nchara:

Igwe anaghị agba nchara bụ otu nke ferrous alloys nke nwere opekempe nke ihe dịka 11% chromium, ihe mejupụtara nke na-egbochi ígwè si nchara ma na-enyekwa ihe ndị na-eguzogide okpomọkụ. Ụdị dị iche iche nke igwe anaghị agba nchara gụnyere carbon carbon (site na 0.03% ka ukwuu karịa). 1.00%), nitrogen, aluminium, silicon, sọlfọ, titanium, nickel, ọla kọpa, selenium, niobium, na molybdenum.Ụdị igwe anaghị agba nchara a kapịrị ọnụ na-ahọrọkarị site na nọmba ọnụọgụ atọ AISI ha, dịka 304 igwe anaghị agba nchara.Standardkpụrụ ISO 15510 depụtara ihe mejupụtara kemịkalụ nke igwe anaghị agba nchara nke nkọwapụta dị na ụkpụrụ ISO, ASTM, EN, JIS na GB (Chinese) dị na tebụl mgbanwe bara uru.

Igwe anaghị agba nchara na-eguzogide nchara pụta site na ọnụnọ nke chromium na alloy, nke na-emepụta ihe nkiri na-adịghị mma nke na-echebe ihe ndị dị n'ime ya site na mwakpo corrosion, ma nwee ike ịgwọ onwe ya n'ihu ikuku oxygen. :

1. mụbaa ọdịnaya chromium kariri 11%.
2. tinye nickel ka ọ dịkarịa ala 8%.
3. tinye molybdenum (nke na-emekwa ka iguzogide pitting corrosion).

Mgbakwunye nke nitrogen na-emekwa ka iguzogide pitting corrosion na-abawanye ma na-abawanye ike ọrụ. Ya mere, e nwere ọtụtụ akara ule igwe anaghị agba nchara nwere chromium na molybdenum dị iche iche dị iche iche iji kwekọọ na gburugburu ebe obibi ahụ ga-adịrịrị.

Nguzogide corrosion na ntanye, mmezi dị ala, na luster maara nke ọma na-eme ka igwe anaghị agba nchara bụrụ ihe dị mma maka ọtụtụ ngwa ebe achọrọ ma ike nke ígwè na nguzogide corrosion.Ọzọkwa, igwe anaghị agba nchara nwere ike tụgharịa n'ime mpempe akwụkwọ, efere, mmanya, waya, na tubing.Enwere ike iji ihe ndị a na-esi nri, ihe na-egbu egbu, ngwa ịwa ahụ, ngwa ngwa, ụgbọ ala, ihe eji arụ ọrụ na nnukwu ụlọ, ngwá ọrụ mmepụta ihe (dịka ọmụmaatụ, na igwe mpempe akwụkwọ, osisi kemịkal, ọgwụgwọ mmiri), na tankị nchekwa na tankị maka kemịkalụ na ngwaahịa nri.Ihe na-eguzogide corrosion nke ihe onwunwe, ịdị mfe nke nwere ike ịsacha ya na steam, na enweghị mkpa maka mkpuchi elu mere ka a na-eji igwe anaghị agba nchara na kichin na ụlọ ọrụ nhazi nri.

Austenitic igwe anaghị agba nchara bụ ezinụlọ kachasị ukwuu nke igwe anaghị agba nchara, na-eme ihe dị ka ụzọ abụọ n'ụzọ atọ nke mmepụta igwe anaghị agba nchara (lee ọnụ ọgụgụ mmepụta n'okpuru).Ha nwere microstructure austenitic, nke bụ akụkụ kristal cubic na-adabere na ihu. Nke a na-enweta microstructure site n'iji ígwè na-ejikọta ya na nickel na / ma ọ bụ manganese zuru ezu na nitrogen iji nọgide na-enwe microstructure austenitic na okpomọkụ niile, sitere na mpaghara cryogenic ruo n'ebe agbaze. .Ya mere, austenitic igwe anaghị agba nchara adịghị ike site na ọgwụgwọ okpomọkụ ebe ọ bụ na ha nwere otu microstructure na okpomọkụ niile.

Usoro nke igwe anaghị agba nchara

Enwere ike kewaa igwe anaghị agba nchara Austenitic n'ime obere ngalaba abụọ, usoro 200 na usoro 300:

Usoro 200 bụ chromium-manganese-nickel alloys nke na-ebuli iji manganese na nitrogen belata iji nickel.N'ihi mgbakwunye nitrogen ha, ha nwere ihe dị ka 50% ike mkpụrụ dị elu karịa 300 usoro igwe anaghị agba nchara.

Ụdị 201 na-esi ike site na ịrụ ọrụ oyi.
Ụdị 202 bụ igwe anaghị agba nchara n'ozuzu.Mbelata ọdịnaya nickel na ịba ụba manganese na-ebute nguzogide corrosion na-adịghị ike.
Usoro 300 bụ chromium-nickel alloys na-enweta microstructure austenitic nke fọrọ nke nta ka ọ bụrụ naanị site na nickel alloy;ụfọdụ akara ule dị oke elu gụnyere ụfọdụ nitrogen iji belata ihe nickel chọrọ.Usoro 300 bụ otu kachasị na nke a na-ejikarị eme ihe.
Ụdị 304: Ọkachamara kacha mara amara bụ Ụdị 304, nke a makwaara dị ka 18/8 na 18/10 maka nhazi ya nke 18% chromium na 8%/10% nickel, n'otu n'otu.
Ụdị 316: Nke abụọ a na-ahụkarị austenitic igwe anaghị agba nchara bụ Ụdị 316. Mgbakwunye nke 2% molybdenum na-enye nnukwu iguzogide acid na corrosion mpaghara nke ion chloride kpatara.Ụdị carbon dị ala, dị ka 316L ma ọ bụ 304L, nwere ọdịnaya carbon n'okpuru 0.03% ma na-eji zere nsogbu corrosion nke ịgbado ọkụ kpatara.

Okpomọkụ ọgwụgwọ nke igwe anaghị agba nchara

Enwere ike ịgwọ igwe anaghị agba nchara Martensitic iji nye akụrụngwa akụrụngwa ka mma.

Usoro ọgwụgwọ okpomọkụ na-agụnye usoro atọ:
Austenitizing, nke ígwè na-ekpo ọkụ na okpomọkụ na nso 980-1,050 °C (1,800-1,920 °F), dabere na ọkwa.Ihe austenite na-esi na ya pụta nwere nhazi cubic kristal gbadoro ụkwụ na ihu.
Na-emenyụ.A na-agbanwe austenite ka ọ bụrụ martensite, ihe owuwu kristal tetragonal siri ike dabere na ahụ.The quenched martensite dị nnọọ ike ma na-akụrikwa akụ maka ọtụtụ ngwa.Ụfọdụ ihe fọdụrụ austenite nwere ike ịdị.
Iwe iwe.A na-ekpo ọkụ Martensite ruo ihe dịka 500 Celsius (932 Celsius F), na-ejide ya na okpomọkụ, wee mee ka ikuku dị jụụ.Okpomọkụ dị elu na-ebelata na-enye ike yana ike nkwụsi ike kacha mana na-abawanye elongation na nguzogide mmetụta.