20CrMnMo intsimbi eshushu eqengqelekayo imivalo engqukuva

Ukusebenza kakuhle kwe-thermal processing, i-normalization emva kokusebenza kakuhle kokusika, emva kokucima kunye nokutshisa kunye neempawu ezilungileyo zoomatshini kunye nokuqina kwefuthe eliphantsi lobushushu, emva kokuba i-carburizing inamandla aphezulu aguquguqukayo kunye nokumelana nokunxiba, kodwa i-weldability embi, ukufudumala ngokufanelekileyo ngaphambi kwe-welding, emva kwe-welding kufuneka. Yiba nomsindo. Idla ngokusetyenziswa kwiimfuno zokwenziwa kobunzima bomgangatho ophezulu, ukuxhathisa okufanelekileyo kubalulekile kwindawo yokubeka i-carburizing, njengeegiya, intonga ye-camshafts,

Ukuqulunqwa kwemichiza:
Ikhabhoni C: 0.17 ~ 0.23
Si Si: 1.17 ~ 1.37
Mn Mn: 0,90 ~ 1.20
I-Sulfur S: ukuvumela umxholo oshiyekileyo ≤0.035
Phosphorus P: ukuvumela umxholo oshiyekileyo ≤0.035
IChromium Cr: 1.10 ~ 1.40
Ni: ukuvumela umxholo oshiyekileyo ≤0.030
Cu: ukuvumela umxholo oshiyekileyo ≤0.030
Mo Mo: 0.20 ~ 0.30
Iinkcazelo ngoomatshini:
Amandla okuqina σb (MPa): ≥1175 (120)
Amandla esivuno σs (MPa): ≥885 (90)
Ubude δ5 (%): ≥10
Ukunciphisa i-ψ (%): ≥45
Amandla empembelelo Akv (J): ≥55
Ukuqina kwempembelelo αkv (J / cm2): ≥69 (7)
Ukuqina: ≤217HB
Ubungakanani besampulu: Ubungakanani besampulu yi-15mm rough
Unyango lobushushu kunye neenkcukacha ze-microstructure:
Iinkcukacha zonyango lobushushu: ukucima i-850 ℃, ukupholisa ioli; ukutshisa 200 ℃, ukupholisa amanzi, ukupholisa umoya.
I-Microstructure: i-martensite epholileyo.
Ubume bokuhanjiswa: kunyango olushushu (oluqhelekileyo, lwe-annealing okanye ubushushu) okanye ngaphandle kokunikezelwa konyango lobushushu, imeko yokuhanjiswa kufuneka icaciswe kwisivumelwano.