20CrMnMo ọkụ akpọrepu ígwè gburugburu ogwe

Ezi thermal nhazi arụmọrụ, normalizing mgbe ezi ọnwụ arụmọrụ, mgbe quenching na tempering na ezi n'ibu Njirimara na ala okpomọkụ mmetụta siri ike, mgbe carburizing nwere elu flexural ike na-eyi iguzogide, ma ogbenye weldability, ka kwesịrị ekwesị warmed tupu ịgbado ọkụ, mgbe ịgbado ọkụ kwesịrị. were iwe. A na-ejikarị eme ihe n'ichepụta chọrọ nke ịdị elu dị elu, nguzogide dị mma bụ akụkụ carburizing dị mkpa, dị ka gia, mkpanaka camshaft,

Ngwakọta kemịkalụ:
Carbon C: 0.17 ~ 0.23
Si Si: 1.17 ~ 1.37
Mn: 0.90 ~ 1.20
Sulfur S: ikwe ka ọdịnaya fọdụrụnụ ≤0.035
Phosphorus P: ikwe ka ọdịnaya fọdụrụnụ ≤0.035
Chromium Cr: 1.10 ~ 1.40
Ni: ikwe ka ọdịnaya fọdụrụnụ ≤0.030
Cu: ikwe ka ọdịnaya fọdụrụnụ ≤0.030
Mo Mo: 0.20 ~ 0.30
Ngwongwo igwe:
Ike tensile σb (MPa): ≥1175 (120)
Ike mpụta σs (MPa): ≥885 (90)
Mgbatị δ5 (%): ≥10
Mbelata nke ψ (%): ≥45
Mmetụta ike Akv (J): ≥55
Mmetụta ike αkv (J / cm2): ≥69 (7)
Isi ike: ≤217HB
Ngosipụta nha: nha nlele bụ 15mm siri ike
Usoro ọgwụgwọ okpomọkụ na nkọwa microstructure:
Nkọwa ọgwụgwọ okpomọkụ: quenching 850 ℃, mmanụ jụrụ oyi; tempering 200 ℃, mmiri jụrụ, ikuku jụrụ.
Microstructure: ọkụ martensite.
Ọnọdụ nnyefe: iji kpoo ọgwụgwọ (normalizing, annealing or tempering) ma ọ bụ na-enweghị nnyefe ọgwụgwọ okpomọkụ, ọnọdụ nnyefe kwesịrị ịkọwapụta na nkwekọrịta.