20CrMnMo kub dov steel puag ncig tuav

Kev ua haujlwm zoo thermal ua haujlwm zoo, normalizing tom qab kev ua haujlwm zoo, tom qab quenching thiab tempering nrog cov khoom siv zoo thiab tsis tshua muaj qhov kub thiab txias, tom qab carburizing muaj zog flexural thiab hnav tsis kam, tab sis tsis zoo weldability, kom sov zoo ua ntej vuam, tom qab vuam yuav tsum ua siab ntev. Feem ntau siv rau hauv kev tsim cov kev xav tau ntawm qhov chaw siab tawv, hnav tsis kam yog qhov tseem ceeb carburizing, xws li iav, camshafts qws,

Tshuaj muaj pes tsawg leeg:
Cov pa roj carbon C: 0.17 ~ 0.23
Sijhawm Sijhawm: 1.17 ~ 1.37
Qhov hnyav: 0.90 ~ 1.20
Sulfur S: tso cai rau cov ntsiab lus seem ≤0.035
Phosphorus P: tso cai rau cov ntsiab lus seem ≤0.035
Chromium Cr: 1.10 ~ 1.40
Ni: tso cai rau cov ntsiab lus seem ≤0.030
Cu: tso cai rau cov ntsiab lus seem ≤0.030
Mov: 0.20 ~ 0.30
Mechanical Properties:
Tensile zog σb (MPa): ≥1175 (120)
Yield zog σs (MPa): ≥885 (90)
Elongation δ5 (%): ≥10
Kev txo qis ntawm ψ (%): ≥45
Impact zog Akv (J): ≥55
Kev cuam tshuam toughness αkv (J / cm2): ≥69 (7)
Hardness: ≤217HB
Qauv loj: Qauv loj yog 15mm ntxhib
Kev kho cua sov thiab microstructure specifications:
Kev kho cua sov specifications: quenching 850 ℃, roj txias; tempering 200 ℃, dej txias, cua txias.
Microstructure: tempered martensite.
Kev xa khoom raws li txoj cai: rau kev kho cua sov (normalizing, annealing lossis tempering) lossis tsis muaj kev kho cua sov, kev xa khoom yuav tsum tau teev tseg hauv daim ntawv cog lus.