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[CN 201810315530.3] Manufacturing method of embedded pin flat material for nuclear-grade drive mechanism produced by diameter forging machine
[CN 201810315530.3] A Manufacturing Method for a Diameter Forging Machine to Produce Embedded Pin Flat Material for Nuclear Grade Drive Mechanism Title: A Manufacturing Method for a Diameter Forging Machine to Produce Embedded Pin Flat Material for Nuclear Grade Drive Mechanism Application Number: CN 201810315530.3 Applicant: Fushun Special Steel Co., Ltd. Application Date: 2018-4-10 Patent Type: Invention Application This invention discloses a Manufacturing Method for a Diameter Forging Machine to Produce Embedded Pin Flat Material for Nuclear Grade Drive Mechanism, the process of electroslag smelting in a vacuum induction protective atmosphere is adopted, the billet is opened by a fast forging machine, the billet is opened by a diameter forging machine twice, and finally the UNS N06690 alloy flat material is produced by a diameter forging machine through five passes. Compared with the traditional hammer forging speed block, the diameter forging machine has a large deformation and a large single hammer pressure in the same time. Through the design of process parameters such as reduction, feed, blow frequency, increase the internal strain uniformity of flat material to reduce the anisotropy of forgings, so as to solve the problems of large grain size difference and unqualified tensile strength at 350 ℃. The beneficial effect of the invention: by adopting the joint production process of fast forging diameter forging, good control of the UNS N06690 alloy flat material size, grain size tissue grade difference, and finally meet the tensile strength requirements of 350 degrees C high temperature stretching.
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