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[CN 201810696976.5] Machining Method for Column of 400MN Die Forging Hydraulic Press
[CN 201810696976.5] Mechanical Processing Method for 400MN Die Forging Hydraulic Press Column Title: Mechanical Processing Method for 400MN Die Forging Hydraulic Press Column Application Number: CN 201810696976.5 Applicant: Angang Heavy Machinery Co., Ltd. Application Date: 2018-6-29 Patent Type: Invention Application The present invention relates to a mechanical processing method for 400MN Die Forging Hydraulic Press Column. First, the column is split into mating surfaces and the rest parts are reserved; secondly, the split columns processed with the mutual matching surfaces are grinded in pairs, with a contact rate of more than 80%. The split columns are combined with the middle positioning key and welded to form an integral column. The combined integral column is finished as a whole; The processed integral column is split and marked. Knurling is carried out on the split mating surface of each column. The method of the invention has high processing accuracy, and overcomes the quality defect of the large cumulative error caused by the first split processing of the constituent column, and then the integral column.
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