40CrNiMo na-ekpo ọkụ akpọrepu ígwè gburugburu ogwe

A na-eji ígwè 40CrNiMoA mee ihe mgbe emechara na iwe ọkụ, a na-ejikwa ya na-emepụta akụkụ ndị dị mkpa chọrọ ezigbo plasticity, ike dị elu na nnukwu nha. Dịka ọmụmaatụ, a na-ejikwa osisi ndị na-arụ ọrụ dị arọ na ígwè ọrụ dị arọ, igwe turbine nke nwere dayameta karịa 250 mm, agụba, nnyefe, ihe nkwụnye, crankshafts, gears, wdg, nwekwara ike iji rotor shafts na agụba na-arụ ọrụ na okpomọkụ karịrị 400. Celsius C.
Usoro nchara dị ala Chrome-Moly nwere 0.5% - 9% Cr na 0.5% - 1% Mo na ala karịa 0.20% carbon. 40CrNiMoA, 4340 na SNCM439 bụ obere alloy chromoly steel ihe sitere na ụkpụrụ dị iche iche.

4340 na SNCM439 bụ ụkpụrụ sitere na American na Japanese n'otu n'otu. N'ọtụtụ ọnọdụ, ha nwere ike ịbụ ihe ndị ọzọ, ọ gwụla ma enwere ndetu pụrụ iche ma ọ bụ jiri ya mee ihe pụrụ iche. Ọdịiche ha bụ nke kachasị dị na kemikal, nkọwa gosipụtara dị ka ndị a:

Ụkpụrụ	GB	AISI	JIS
Ihe onwunwe	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	≤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 Alloy Steel Mechanical Properties

• Ike mpụta: ≥ 835 MPa
• Ike nkwụsị: ≥ 980 MPa
• Mgbatị: ≥12%
• Ọnụego mbelata na mpaghara: ≥55%
• Mmetụta nnabata ike: ≥ 78 J
• Ihe siri ike nke brinell: ≤ 269 (mkpara igwe na-ekpo ọkụ ma ọ bụ dị elu)
• Nlele nha: 25mm

Nkọwapụta ọgwụgwọ okpomọkụ

• Okpomọkụ ikpo ọkụ nke mbụ na-emenyụ: 850 Celsius C (Quenchant-mmanụ)
• Okpomọkụ kpo oku: 600C (Quenchant-mmiri, mmanụ)

A na-eji ya n'ebe chọrọ akụkụ ihe mgbochi dị elu yana ezigbo ihe na-eguzogide ihe dị ka axles dị arọ, ogwe osisi, ngwa ọrụ dị arọ, spindles, pin, studs, bolts, couplings, sprockets, pinions, torsion bars, njikọ njikọ. A na-eji ígwè ndị a dị elu mee ihe n'ọtụtụ ebe dị ka ụlọ ọrụ kemịkalụ mmanụ ụgbọala, ụgbọ ala, ngwa ọkụ ọkụ na ọrụ okpomọkụ ndị ọzọ.