40CrNiMo bishyushye bizengurutse ibyuma bizunguruka

40CrNiMoA ibyuma bikoreshwa nyuma yo kuzimya no gushyuha, kandi bikoreshwa mugukora ibice byingenzi bisaba plastike nziza, imbaraga nyinshi nubunini bunini. Kurugero, ibiti biremereye cyane mumashini aremereye cyane, shitingi ya turbine yamashanyarazi ifite diametero zirenga mm 250, ibyuma, imiyoboro, ibyuma bifata ibyuma, imashini, ibikoresho, nibindi, birashobora kandi gukoreshwa mumashanyarazi ya rotor na blade ikora mubushyuhe burenga 400 ° C.
Chrome-Moly ikomatanya ibyuma bikurikirana birimo 0.5% - 9% Cr na 0.5% - 1% Mo na munsi ya 0,20% ya karubone. 40CrNiMoA, 4340 na SNCM439 nibikoresho bito bya chromoly ibyuma biva mubipimo bitandukanye.

4340 na SNCM439 ni ibipimo bituruka ku Banyamerika n'Abayapani. Mubihe byinshi birashobora kuba ibikoresho bindi, keretse niba hari inyandiko yihariye cyangwa ikoreshwa kubintu byihariye. Itandukaniro ryabo ryibanze cyane mubintu bya shimi, ibisobanuro byerekanwe kuburyo bukurikira:

Ibipimo	GB	AISI	JIS
Ibikoresho	40CrNiMoA	4340	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
Mn	0.50~0.80	0.60~0.80	0.60~0.90
P.	≤0.025	≤0.035	≤0.030
S.	≤0.025	.040.040	≤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 Ibikoresho Byuma Byuma Byuma

• Imbaraga zitanga umusaruro: 35 835 MPa
• Imbaraga zingana: 80 980 MPa
• Kurambura: ≥12%
• Igipimo cyo kugabanuka mukarere: ≥55%
• Ingaruka zikurura imbaraga: ≥ 78 J.
• Ibikoresho bya Brinell Gukomera: ≤ 269
• Ingano y'icyitegererezo: 25mm

Ibisobanuro byo kuvura ubushyuhe

• Ubushyuhe bwa mbere bwo kuzimya ubushyuhe: 850 ° C (Amavuta yo kuzimya)
• Ubushyuhe bwo gushyushya ubushyuhe: 600 ° C (Quenchant– amazi, amavuta)

Byakoreshejwe aho bisaba ibintu byinshi kandi byiza birwanya kwambara nkibikoresho biremereye cyane, imitiba, ibikoresho biremereye cyane, spindles, pin, sitidiyo, bolts, guhuza, amasuka, pinoni, utubari twa torsion, guhuza inkoni. Ibyo byuma birebire cyane byakoreshejwe cyane nko mu nganda zikomoka kuri peteroli, ibinyabiziga, ibikoresho bikoresha ingufu za parike hamwe nizindi serivisi z’ubushyuhe bwo hejuru.