Method for thermal expansion of superalloy rectangular cross-section ring to form special-shaped cross-section ring
A technology of rectangular cross-section and special-shaped cross-section, applied in the field of bulging of rings, can solve the problems of high equipment requirements, low productivity, and large energy digestion, and achieve the effect of simplifying the bulging process, smooth metal flow, and improving productivity.
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[0032] The main chemical element content (percentage by weight) of the alloy given in the prior art is: C content≤0.08%, Cr content 17.0%~21.0%, Ni content 50.0%~55.0%, Co content≤1.0% %, Mo content 2.80% ~ 3.30%, Al content 0.30% ~ 0.70%, Ti content 0.75% ~ 1.15%, Nb content 4.75% ~ 5.50%, B content ≤ 0.006%, Mg content ≤ 0.01 %, Mn content ≤0.35%, Si content ≤0.35%, P content ≤0.015%, S content ≤0.015%, Cu content ≤0.30%, Ca content ≤0.01%, Pb content ≤0.0005% , Se content ≤ 0.0003%, the balance is Fe.
[0033] The structural diagram of the used bulging machine for implementing the thermal bulging method of the present invention provided in the prior art is as follows: figure 2 As shown, the bulging machine is mainly composed of a mandrel slider 1, a radial slider 2, a bulging block 3, a workbench 4 and a guide rail 5. The mandrel slider 1 is conical and is set in the radial slider 2 to cooperate with the conical inner peripheral surface of the radial slider 2. The mandre...
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