Investment Casting Auto Part ya Chrome Molybdenum 42CrMo4 Alloy Steel

Mwambo Chrome Molybdenum 42CrMo4 aloyi zitsulozinthu zopangira ndalamakwa loko mbedza ya galimoto ndielectrophoresis pamwamba chithandizo.

42CrMo4 (1.7225) yochokera ku EN 10083-3, yomwe nthawi zambiri imagwiritsa ntchito kutentha ndi QT (Queching + Tempering), imagwiritsidwa ntchito kwambiri popanga ndalama. ili ndi mphamvu zambiri, kulimba kwambiri, kulimba kwabwino, kupsa mtima kwamphamvu, kuchepa kwa kutopa kwambiri, kukana kukhudzidwa bwino pambuyo pozimitsa ndi kutentha, komanso kulimba kwamphamvu kwa kutentha kochepa. Gulu lofanana la 42CrMo4 ndi 4140 (ASTM, USA) ndi 42CrMo (GB/T 3077, China)

42CrMo4 katundu zitsulo kutentha firiji mu kuzimitsidwa ndi kupsa mtima chikhalidwe.

Mphamvu zokolola:
≥900 N/mm2 (d≤16mm, t≤8mm)
≥750 N/mm2 (16 <d ≤ 40mm, 8 <t ≤ 20mm)
≥900 N/mm2 (40 <d ≤ 100mm, 20 <t ≤ 60mm)
≥900 N/mm2 (100 <d ≤ 160mm, 60 <t ≤ 100mm)
≥900 N/mm2 (160 <d ≤ 250mm, 100 <t ≤ 160mm)

Kulimba kwamakokedwe:
1100-1300 N/mm2 (d≤16mm, t≤8mm)
1000-1200 N/mm2 (16 <d ≤ 40mm, 8 <t ≤ 20mm)
900-1100 N/mm2 (40 <d ≤ 100mm, 20 <t ≤ 60mm)
850-950 N/mm2 (100 <d ≤ 160mm, 60 <t ≤ 100mm)
750-900 N/mm2 (160 <d ≤ 250mm, 100 <t ≤ 160mm)

Elongation:≥ 10% (d≤16mm, t≤8mm)

Mphamvu yamphamvu yamayeso aatali a Charpy-V-notch:
≥35J (16 <d ≤ 250mm, 8 <t ≤ 160mm)
≥11% (16 <d ≤ 40mm, 8 <t ≤ 20mm)
≥12% (40 <d ≤ 100mm, 20 <t ≤ 60mm)
≥13% (100 <d ≤ 160mm, 60 <t ≤ 100mm)
≥14% (160 <d ≤ 250mm, 100 <t ≤ 160mm)

42CrMo4 + QT kuuma mu HRC: ≥53 (pambuyo pa moto kapena kuumitsa kulowetsedwa)
42CrMo4 kuuma mu HBW: ≤255 (othandizidwa kuti azitha kumeta ubweya); ≤241 (yofewa)

CChitsulo cha arbon, chitsulo chochepa cha alloy, chitsulo chapamwamba kwambiri ndi zida zachitsulo zimagwiritsidwa ntchito m'mafakitale angapo. Ndi magiredi ambiri, chitsulo ndi ma aloyi ake amatha kutenthedwa kuti azitha kutulutsa bwino komanso kulimba kwamphamvu, kusintha kuuma kapena kukhazikika kwazomwe injiniya amafunikira kapena makina omwe amafunidwa.

Kugwiritsa ntchitondondomeko yopangira ndalama, RMC casting foundry imatha kukwaniritsa zofunikira malinga ndi ASTM, SAE, AISI, ACI, DIN, EN, ISO, ndi GB miyezo. Tili ndi ma aloyi opitilira 100 achitsulo komanso opanda chitsulo omwe timaponyera nawo magawo pogwiritsa ntchito njira zovuta kupanga. Mapangidwe athu opangira ndalama mozama komanso a geometrically amapangidwa kuti azikhala bwino, kuchepetsa kufunikira kwa makina achiwiri.

Chitsulo cha Chromium-molybdenum chimagwiritsidwa ntchito kwambiri m'mafakitale omwe ali ndi makina apamwamba kwambiri. Kuphatikizika kwa molybdenum ku chitsulo cha chromium kumatha kukulitsa kulimba kwazitsulo zachitsulo popanda kukhudza kwambiri kulimba kwazitsulo zotayidwa. Kuphatikiza apo, chitsulo cha chromium-molybdenum chili ndi ntchito yabwino kwambiri yotentha komanso kukana kukwawa. Pambuyo kuzimitsa ndi kutentha kapena kutentha kutentha, chromium-molybdenum zitsulo zotayidwa zimatha kupeza makina abwino kwambiri.

Molybdenum imatha kupititsa patsogolo kuuma kwachitsulo ndikuchepetsa kupsa mtima kwachitsulo. Chitsulo cha Chromium-molybdenum chimagwiritsidwa ntchito popanga zigawo zazikulu ndi zitsulo zomwe zimafunikira kuumitsa kwambiri.