AISI 904L igwe anaghị agba nchara

AISI 904L igwe anaghị agba nchara ma ọ bụ AISI 904L (WNR1.4539) ASTM A 249, N08904, X1NiCrMoCu25-20-5 bụ ígwè austenitic dị elu nke ejiri alloy mee. Ma e jiri ya tụnyere 316L, SS904L nwere obere ọdịnaya carbon (C), ọdịnaya chromium (Cr) dị elu, yana ihe dị ka okpukpu abụọ nke ọdịnaya nickel (Ni) na molybdenum (Mo) nke 316L, na-enye ya okpomọkụ dị elu...

904L (N08904,, 14539) ígwè anaghị agba nchara nke nwere chromium 19.0-21.0%, nickel 24.0-26.0%, na molybdenum 4.5%. 904L ígwè anaghị agba nchara nke nwere obere carbon, nickel dị elu, molybdenum austenitic anaghị agba nchara nke nwere acid, nke bụ ihe onwunwe nke ụlọ ọrụ French H·S wepụtara. Ọ nwere ikike mgbanwe mkpali-passivation dị mma, ezigbo nguzogide nchara, ezigbo nguzogide nchara na asịd ndị na-anaghị egbu egbu dịka sulfuric acid, acetic acid, formic acid, phosphoric acid, ezigbo nguzogide pitting na mgbasa ozi ion chloride na-anọpụ iche, yana ezigbo nguzogide corrosion na nrụgide nrụgide. Ọ dabara maka ọtụtụ njupụta nke sulfuric acid dị n'okpuru 70°C, ma nwee ezigbo nguzogide corrosion na acetic acid nke njupụta ọ bụla na okpomọkụ ọ bụla n'okpuru nrụgide nkịtị, yana acid agwakọtara nke formic acid na acetic acid.

Aịsị 904L anaghị agba nchara bụ ígwè austenitic dị elu nke nwere obere carbon dị ukwuu. Nchikota nke chromium, nickel, molybdenum na ọla kọpa na-eme ka ígwè ahụ nwee ezigbo iguzogide nchara otu. Mgbakwunye nke ọla kọpa na-eme ka ọ nwee ike iguzogide acid siri ike, nwere ike iguzogide ọtụtụ asịd organic na inorganic dị iche iche, ọkachasị chloride crevice corrosion na stress corrosion crashing, ọ dịghị mfe inwe ntụpọ na mgbawa, ma nwee ike iguzogide olulu mmiri siri ike. AISI 904L nwere ezigbo iguzogide nchara na asịd sulfuric diluted. Aịsị Ígwè ahụ bụ ígwè dabara adaba maka acid sulfuric diluted siri ike nke na-emebi emebi. Ọ na-eguzogidekwa mmiri mmiri, ọ nwere ezigbo ike ịrụ ọrụ na ịgbado ọkụ, a na-ejikwa ya nke ọma na ụlọ ọrụ owuwu, kemịkalụ, ọgwụ na ụlọ ọrụ ndị ọzọ.