Technological process for performing continuous casting-rolling formation on 42CrMo steel ring piece
A technological process and technology of steel rings, which is applied in the field of continuous forming process of 42CrMo steel ring casting and rolling, can solve the problems of low production efficiency, lengthy process, waste of materials, etc., and achieve high shape and dimension accuracy and fine grain Good effect, saving processing cost
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[0011] Below in conjunction with embodiment the present invention will be described in further detail
[0012] In this example, 42CrMo steel is selected, and the size of the ring blank is required to be: outer diameter φ871mm, inner diameter φ516mm, height 241mm. The dimension requirements of rolling and expanding formed parts are: outer diameter φ1248mm, inner diameter φ1045mm, height 234mm. The technological process is: alloy melting → molten steel refining → centrifugal casting ring billet → hot rolling → heat treatment → precision shaping steps. in:
[0013] ① The molten steel is refined by the basic electric arc furnace oxidation method, and the smelting temperature is 1700°C;
[0014] ② Centrifugally pour the refined molten steel at 1560°C, and release the mold at 1250°C after centrifugal casting;
[0015] The ring billet is transported to the D53K-4000 CNC diameter-axial rolling machine through the conveyor belt, and the waste heat of the casting billet is used to di...
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