Hot bulging forming method for bearing steel rectangular cross-section ring unit
A technology of rectangular cross-section and ring parts, applied in the field of thermal expansion forming of bearing steel rectangular cross-section ring parts, can solve the problem of difficulty in obtaining high-quality, precise, efficient, environmentally friendly and low-cost ring parts, long production preparation time and production cycle , unable to achieve dimensional accuracy and other problems, to achieve the effect of improved dimensional accuracy, low cost, and improved productivity
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[0032] To implement the thermal expansion forming method of the bearing steel rectangular cross-section ring member of the present invention, it is necessary to provide a bulging machine, a forging heating furnace, a manipulator and other equipment. The following takes the bearing steel with the material grade of GCr15 as an example to illustrate the specific implementation of the method in detail:
[0033] The main chemical element content (weight percentage) of the bearing steel given in the prior art is: C content 0.95% ~ 1.05%, Mn content 0.2% ~ 0.4%, Si content 0.15% ~ 0.35%, S content The amount is ≤0.020%, the P content is ≤0.027%, the Cr content is 1.30% to 1.65%, and the balance is Fe.
[0034] The structure diagram of the bulging machine used in the thermal bulging method of the present invention given in the prior art is as follows figure 2 As shown, the bulging machine is mainly composed of mandrel slider 1, radial slider 2, bulging block 3, worktable 4 and guide rail ...
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