40CrNiMo litšepe tse pota-potiloeng tse chesang

40CrNiMoA tšepe e sebelisoa ka mor'a ho tima le ho futhumatsa, 'me e sebelisetsoa ho etsa likarolo tsa bohlokoa tse hlokang polasetiki e ntle, matla a phahameng le boholo bo boholo. Ka mohlala, li-shafts tse boima ka mechine e boima, li-shaft tsa turbine tsa mouoane tse bophara ba 250 mm, li-blades, transmissions, fasteners, crankshafts, gears, joalo-joalo, li ka sebelisoa bakeng sa li-rotor shafts le li-blades tse sebetsang ka mocheso o fetang 400. °C.
Chrome-Moly low alloy steel series e na le 0.5% - 9% Cr le 0.5% - 1% Mo le ka tlase ho 0.20% carbon. 40CrNiMoA, 4340 le SNCM439 ke lisebelisoa tse tlaase tsa alloy chromoly tse tsoang ho litekanyetso tse fapaneng.

4340 le SNCM439 ke litekanyetso tse tsoang ho Amerika le Majapane ka ho latellana. Maemong a mangata e ka ba lisebelisoa tse ling, ntle le haeba ho na le lengolo le khethehileng kapa le sebelisetsoa morero o khethehileng. Phapang ea bona e teng haholo-holo ka likarolo tsa lik'hemik'hale, lintlha tse bontšitsoeng ka tsela e latelang:

Litekanyetso	GB	AISI	JIS
Lintho tse bonahalang	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
Mong	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
Kr	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

• Matla a ho hlahisa: ≥ 835 MPa
• Matla a tsitsitseng: ≥ 980 MPa
• Elongation: ≥12%
• Sekhahla sa ho fokotsa sebaka: ≥55%
• Matla a monyang matla: ≥ 78 J
• Material Brinell Hardness: ≤ 269 (Molamu oa tšepe o halefileng kapa mocheso o phahameng)
• Boholo ba mohlala: 25mm

Tlhaloso ea phekolo ea mocheso

• Mocheso oa pele oa ho tima mocheso: 850 °C (Quenchant– oli)
• Mocheso oa ho futhumatsa: 600 ° C (Quenchant- metsi, oli)

E ne e sebelisoa moo ho hlokehang likarolo tsa thepa tse sa sebetseng hantle tse kang  li-axle tse boima, li-shafts, li-gear tse boima, li-spindle, pin, studs, bolts, couplings, sprockets, pinions, torsion bar, connecting rod. Litšepe tsena tse phahameng tsa alloy li 'nile tsa sebelisoa haholo libakeng tse kang indasteri ea lik'hemik'hale tsa peterole, likoloi, lisebelisoa tsa motlakase oa mouoane le litšebeletso tse ling tsa mocheso o phahameng.