A high-speed rail wheel and its hot extrusion integral forming method
A technology of hot extrusion and wheels, which is applied in the direction of wheels, wheels characterized by rail running parts, vehicle parts, etc., which can solve the problem of small number of forging steps and hydraulic presses, large equipment investment and occupied area, and inability to fully utilize the equipment Efficiency and other issues to achieve the effects of saving production time, reducing energy consumption, increasing wear resistance and contact fatigue resistance
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[0029] Below in conjunction with accompanying drawing, the present invention is described in further detail:
[0030] Such as figure 2 As shown, a high-speed rail wheel according to the present invention is composed of two-component metal steel, including a rim 1, a rim 3 and a tread 2 made of low alloy steel, and a hub 5 and spoke 4 made of medium carbon steel part. The overall size of the high-speed rail wheel must meet the relevant national standards. At the same time, the thickness from the tread 2 to the rim 3 of the wheel is 35mm. Among them, in order to maintain the overall performance of the rim 1, rim 3 and tread 2 in the low-alloy steel area, the chemical composition in the low-alloy steel includes: Fe: 97.989%, C: 0.21%, Si: 0.32%, Mn: 0.81%, Cr: 0.30%, Ti: 0.08%, S: 0.004%, P: 0.005%, Als: 0.011%, V: 0.001%, Mo: 0.02%, Ni: 0.1%, Cu: 0.15%. The chemical composition of hub 5 and spoke 4 in the medium carbon steel area includes: Fe: 97.654%, C: 0.50%, Si: 0.32%, M...
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