40CrNiMo inopisa yakakungurutswa simbi yakatenderedzwa mbariro

40CrNiMoA simbi inoshandiswa mushure mekudzima uye kupisa, uye inoshandiswa kugadzira zvikamu zvakakosha zvinoda plastiki yakanaka, simba guru uye hukuru hukuru. Semuyenzaniso, mashefu anorema mumichina inorema, turbine shaft ine madhayamita anopfuura 250 mm, mablades, transmissions, fasteners, crankshafts, magiya, nezvimwewo, anogona zvakare kushandiswa kune rotor shafts uye blades anoshanda patembiricha inopfuura 400. °C.
Chrome-Moly low alloy steel series ine 0.5% - 9% Cr uye 0.5% - 1% Mo uye yakaderera pane 0.20% kabhoni. 40CrNiMoA, 4340 uye SNCM439 ndiyo yakaderera alloy chromoly simbi zvinhu kubva kune akasiyana zviyero.

4340 uye SNCM439 zviyero kubva kuAmerican neJapan zvakateerana. Mumamiriro ezvinhu mazhinji anogona kunge ari mamwe midziyo, kunze kwekunge paine yakakosha chinyorwa kana kushandiswa kune yakakosha chinangwa. Misiyano yavo inonyanya kuvepo mune zvemakemikari zvinhu, zvinyorwa zvinoratidzwa sezvizvi:

Mitemo	GB	AISI	JIS
Material	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

• Goho simba: ≥ 835 MPa
• Kusimba kwesimba: ≥ 980 MPa
• Elongation: ≥12%
• Chiyero chekudzikisa munzvimbo: ≥55%
• Simba rinotora simba: ≥ 78 J
• Material Brinell Kuomarara: ≤ 269 (Yakanyiwa kana yakanyanya tembiricha yakadzikama simbi tsvimbo)
• Saizi yemuenzaniso: 25mm

Tsanangudzo yekurapa kwekupisa

• Kutanga kudzima tembiricha yekudziya: 850 °C (Quenchant-mafuta)
• Kupisa kupisa tembiricha: 600 °C (Quenchant- mvura, mafuta)

Yaishandiswa painoda masimbi akareba uye akanaka anoramba kupfekeka senge  heavy-duty axles, shafts, heavy-duty gears, spindles, pins, studs, bolts, couplings, sprockets, pinions, torsion bars, connecting rods. Aya akakwira tensile alloy simbi akashandiswa zvakanyanya munzvimbo dzakaita sepeturu kemikari indasitiri, mota, midziyo yemagetsi echipfunga uye mamwe masevhisi ekupisa.