Method for preparing wires from difficult-to-deform cobalt-based high-temperature alloy

Abstract

The invention discloses a method for preparing wires from difficult-to-deform cobalt-based high-temperature alloy. The method comprises the following steps that 1, mother alloy of the cobalt-based high-temperature alloy is melted, then is refined, and then undergoes vacuum suction casting to obtain a cobalt-based high-temperature alloy round bar; 2, the cobalt-based high-temperature alloy round bar is placed into a quartz glass pipe, then is put into a quartz glass wire-drawing machine, and then is heated to obtain the cobalt-based high-temperature alloy liquid, when the quartz glass which isin contact with the cobalt-based high-temperature alloy liquid is softened, wire drawing is carried out, and cooling is carried out to obtain the cobalt-based high-temperature alloy wire crude productcoated with the quartz glass; and 3, the cobalt-based high-temperature alloy wire crude product coated with the quartz glass sequentially undergoes coating removing, rotary forging and drawing finishing to obtain the cobalt-based high-temperature alloy wires. According to the method, the quartz glass pipe is adopted to coat the cobalt-based high-temperature alloy round bar, then heating the wiredrawing are carried out, the diameter of the cobalt-based high-temperature alloy wires is controlled by controlling the wire-drawing shape of the quartz glass pipe, then the cobalt-based high-temperature alloy wires with the diameter ranging from 1 mm to 3 mm are obtained, and the problem that the cobalt-based high-temperature alloy is poor in molding and difficult to deform is solved.

Description

Technical field [0001] The invention belongs to the technical field of metal casting, and specifically relates to a method for preparing a wire from a hard-to-deform cobalt-based high-temperature alloy. Background technique [0002] Cobalt-based superalloys cannot be formed by traditional forging, rolling, and drawing processes due to their high hardness and strength, poor plastic shape at room temperature and high temperature, and are usually prepared by casting and powder metallurgy. At present, the horizontal continuous casting method at home and abroad has been able to mass-produce cobalt-based superalloy wires with a diameter of more than 3mm. However, for cobalt-based superalloy wires with a diameter of less than 3mm and a length of less than 400mm, powder metallurgy is mainly used in China to produce high temperature The alloy slab is then cut into strips by wire to obtain the cobalt-based superalloy wire, or the cobalt-based superalloy casting bar with a larger diameter i...

AI Technical Summary

Problems solved by technology

In this method, a quartz glass tube is used to coat a cobalt-based superalloy round rod and then heated and drawn. By controlling the drawing shape of the quartz glass tube, the diameter of the cobalt-based superalloy wire is indirectly controlled, and finally a cobalt-based superalloy wire with a diameter of 1 mm to 3 mm is obtained. , overcome the problems of poor shaping and difficult deformation of cobalt-based superalloys, improve the production efficiency of cobalt-based superalloy wires, and reduce production costs