40CrNiMo amabha ensimbi ayindilinga ashisayo ashisayo

Insimbi ye-40CrNiMoA isetshenziswa ngemva kokucisha nokushisa, futhi isetshenziselwa ukwenza izingxenye ezibalulekile ezidinga ipulasitiki enhle, amandla aphezulu kanye nosayizi omkhulu. Isibonelo, izinsimbi ezisindayo emishinini esindayo, izinsimbi zeturbine ezinobubanzi obungaphezu kwama-250 mm, ama-blades, ukuhanjiswa, izinsimbi, ama-crankshafts, amagiya, njll., nazo zingasetshenziselwa imiphini ye-rotor nama-blades asebenza emazingeni okushisa angaphezu kwama-400. °C.
Uchungechunge lwensimbi ye-Chrome-Moly low alloy luqukethe u-0.5% - 9% Cr no-0.5% - 1% Mo futhi ongaphansi kuka-0.20% wekhabhoni. I-40CrNiMoA, 4340 kanye ne-SNCM439 yizinto eziphansi ze-alloy chromoly steel materials ezivela kumazinga ahlukene.

I-4340 kanye ne-SNCM439 izindinganiso ezivela eMelika naseJapane ngokulandelana. Ezimweni eziningi zingaba izinto ezihlukile, ngaphandle uma kunenothi elikhethekile noma elisetshenziselwa inhloso ekhethekile. Umehluko wabo utholakala ikakhulukazi ezintweni zamakhemikhali, imininingwane iboniswe kanje:

Amazinga	GB	AISI	I-JIS
Okubalulekile	40CrNiMoA	4340	I-SNCM439 (SNCM8)
C	0.37~0.44	0.38~0.43	0.36~0.43
Si	0.17~0.37	0.15~0.35	0.15~0.35
UMn	0.50~0.80	0.60~0.80	0.60~0.90
P	≤0.025	≤0.035	≤0.030
S	≤0.025	≤0.040	≤0.030
Cr	0.60~0.90	0.70~0.90	0.60~1.00
Ni	1.25~1.65	1.65~2.00	1.60~2.00
Mo	0.15~0.25	0.20~0.30	0.15~0.30

40CrNiMoA Ingxubevange Yensimbi Mechanical Properties

• Amandla okukhiqiza: ≥ 835 MPa
• Amandla okuqina: ≥ 980 MPa
• Ubude: ≥12%
• Izinga lokunciphisa endaweni: ≥55%
• Amandla amunca umthelela: ≥ 78 J
• I-Material Brinell Hardness: ≤ 269 (Induku yensimbi ene-annealed noma izinga lokushisa eliphezulu)
• Usayizi wesampula: 25mm

Ukucaciswa kokwelashwa kokushisa

• Ukushisa kokuqala kokucisha: 850 °C (Quenchant– uwoyela)
• Izinga lokushisa elishisayo: 600 °C (Quenchant– amanzi, uwoyela)

Yayisetshenziswa lapho idinga izingxenye zezakhiwo eziqinile neziqinile eziqinile ezifana  nama-ekseli esindayo, ama-shafts, amagiya esindayo, ama-spindle, amaphini, ama-studi, amabhawudi, ama-couplings, ama-sprockets, amaphinifa, ama-torsion bars, izinduku zokuxhuma. Lezi zinsimbi eziqinile eziqinile zisetshenziswe kakhulu ezindaweni ezifana nemboni yamakhemikhali kaphethiloli, ezezimoto, imishini yamandla esitimu kanye nezinye izinsizakalo zokushisa okuphezulu.