Ntshiab npib tsib xee thiab npib tsib xee alloy
N5/N6/N7/NY1
Nws muaj cov yam ntxwv hauv qab no:
Nickel muaj tshuaj lom neeg ruaj khov thiab zoo corrosion kuj nyob rau hauv ntau yam xov xwm. Nws tus qauv electrode txoj hauj lwm yog -0.25v, uas yog zoo tshaj hlau thiab tsis zoo tshaj tooj liab. Nickel muaj corrosion kuj zoo nyob rau hauv dilute non-oxidizing zog (xws li HCU, thiab H2SO4) thiab nyob rau hauv tsis muaj oxygen yaj, tshwj xeeb tshaj yog nyob rau hauv nruab nrab thiab alkaline daws. Tias yog vim hais tias npib tsib xee muaj peev xwm passivation, tsim ib tug tuab tiv thaiv zaj duab xis rau saum npoo, uas tiv thaiv oxidation tsis tu ncua ntawm npib tsib xee.
Main daim ntawv thov teb:
Kev lag luam tshuaj, ntub dej corrosion-resistant qhov chaw ntawm lub tshuab hluav taws xob (dej inlet rhaub thiab chav kav dej), cov cuab yeej tswj kev ua qias tuaj (khoom siv roj desulfurization), thiab lwm yam.
Table 1. Hom thiab tus qauv
Cov kav dej | Daim phiaj | Bar | Forging (chemical muaj pes tsawg leeg) | |
N6 | GB/T 2882-2005 | GB/T 2054-2005 | GB/T 4435-84 | GB/T 5235-2007 |
NY 1 | GB/T 2056-2007 |
Table 2: tshuaj muaj pes tsawg leeg
Ni | Co | Cu | Si | Mn | C | S | Fe | Mg | P | Pb | |
N5 | Ntau dua lossis sib npaug rau 99.0 | Tsawg dua lossis sib npaug rau 0.25 | Tsawg dua lossis sib npaug rau 0.30 | Tsawg dua lossis sib npaug rau 0.35 | Tsawg dua lossis sib npaug rau 0.02 | Tsawg dua lossis sib npaug rau 0.01 | Tsawg dua lossis sib npaug rau 0.40 | — | — | —— | |
N6 | Ntau dua lossis sib npaug rau 99.5 | Tsawg dua lossis sib npaug rau 0.10 | Tsawg dua lossis sib npaug rau 0.10 | Tsawg dua lossis sib npaug rau 0.05 | Tsawg dua lossis sib npaug rau 0.10 | Tsawg dua lossis sib npaug rau 0.005 | Tsawg dua lossis sib npaug rau 0.10 | Tsawg dua lossis sib npaug rau 0.10 | 0.002 | Tsawg dua lossis sib npaug rau 0.002 | |
N7 | Ntau dua lossis sib npaug rau 99.0 | Tsawg dua lossis sib npaug rau 0.25 | Tsawg dua lossis sib npaug rau 0.30 | Tsawg dua lossis sib npaug rau 0.35 | Tsawg dua lossis sib npaug rau 0.15 | Tsawg dua lossis sib npaug rau 0.01 | Tsawg dua lossis sib npaug rau 0.10 | — | — | —— | |
NY 1 | Ntau dua lossis sib npaug rau 99.7 | Tsawg dua lossis sib npaug rau 0.10 | Tsawg dua lossis sib npaug rau 0.10 | Tsawg dua lossis sib npaug rau 0.10 | — | Tsawg dua lossis sib npaug rau 0.10 | — | Tsawg dua lossis sib npaug rau 0.005 | Tsawg dua lossis sib npaug rau 0.20 | —— | |
Table 3: mechanical properties of the alloy at room temperature
Lub npe xwm txheej | Tensile zog | Extensibility feem pua | Yield point MPa | Brinell hardness HB | Elastic txwv MPa | cuam tshuam toughness | |
Ntshiab npib tsib xee | annealing | 294-588 | 10-30 | Ntau dua lossis sib npaug rau 117.6 | 90-120 | Ntau dua lossis sib npaug rau 78.4 | Ntau dua lossis sib npaug li 31 |
ua haujlwm txias | 490-882 | 2-20 | Ntau dua lossis sib npaug rau 686 | 120-240 | — | — |
