20CrMnMo zafi birgima karfe zagaye sanduna

Good thermal aiki yi, normalizing bayan mai kyau yankan yi, bayan quenching da tempering da kyau inji Properties da low zafin jiki tasiri tauri, bayan carburizing da high flexural ƙarfi da kuma sa juriya, amma matalauta weldability, to yadda ya kamata warmed sama kafin waldi, bayan waldi ya kamata. a yi fushi. Yawanci ana amfani da shi a cikin buƙatun masana'anta na tsayin daka mai tsayi, juriya mai kyau yana da mahimmancin sassan carburizing, kamar gears, sandar camshafts,

Haɗin Kemikal:
Carbon C: 0.17 ~ 0.23
Si Si: 1.17 ~ 1.37
Mn: 0.90 ~ 1.20
Sulfur S: don ba da damar ragowar abun ciki ≤0.035
Phosphorus P: don ba da damar ragowar abun ciki ≤0.035
Chromium Cr: 1.10 ~ 1.40
Ni: don ƙyale ragowar abun ciki ≤0.030
Cu: don ƙyale ragowar abun ciki ≤0.030
Mo Mo: 0.20 ~ 0.30
Kayayyakin Injini:
Ƙarfin ƙarfi σb (MPa): ≥1175 (120)
Ƙarfin Haɓaka σs (MPa): ≥885 (90)
Tsawaita δ5 (%): ≥10
Rage ψ (%): ≥45
Tasirin makamashi Akv (J): ≥55
Tauri taurin αkv (J / cm2): ≥69 (7)
Saukewa: ≤217HB
Girman samfurin: Girman samfurin shine 15mm m
Maganin zafi da ƙayyadaddun ƙayyadaddun ƙwayoyin cuta:
Heat magani bayani dalla-dalla: quenching 850 ℃, mai sanyaya; tempering 200 ℃, ruwa mai sanyaya, iska mai sanyaya.
Microstructure: mai zafi martensite.
Matsayin bayarwa: don zafi jiyya (na al'ada, annealing ko tempering) ko ba tare da isar da maganin zafi ba, ya kamata a ƙayyade matsayin bayarwa a cikin kwangilar.