A kind of aging treatment method of cobalt-based alloy wire

Abstract

The invention discloses an aging treatment method for a cobalt-based alloy wire. The aging treatment method comprises the following steps that 1, a heating furnace containing sand with the grain size smaller than 500 micrometers is heated to the needed aging temperature; and 2, the cobalt-based alloy wire machined to the needed diameter is inserted into the sand in the first step to be subjected to heat preservation for the needed aging duration. According to the aging treatment method, it is guaranteed that the heating temperature of the cobalt-based alloy wire is constant, the cobalt-based alloy wire can be prevented from being in direct contact with air, and oxidization is avoided; the temperature is rapidly increased to the aging temperature, the heat preservation time is shortened, and therefore defect elimination and atom segregation can be facilitated; meanwhile, coarse grains can be avoided, and it is guaranteed that the toughness of the cobalt-based alloy wire is not reduced while the strength of the cobalt-based alloy wire is improved; the problem that strict sealing performance, operation complexity, the vacuum pumping and releasing long-time characteristic and the like are required under the vacuum heating condition can be avoided, operation is convenient, and high efficiency is achieved; and the problem of the uneven structure of the cobalt-based alloy wire is solved, and the aging treatment method can be widely applied to coil heat treatment.

Description

technical field [0001] The invention relates to the manufacturing technology of cobalt-based alloy wire, in particular to an aging treatment method for cobalt-based alloy wire. Background technique [0002] Cobalt-based alloy is a cemented carbide resistant to various types of wear and corrosion as well as high temperature oxidation. That is commonly referred to as cobalt-chromium-tungsten (molybdenum) alloys, cobalt-based alloys are mainly composed of cobalt, containing a considerable amount of nickel, chromium, tungsten and a small amount of alloying elements such as molybdenum, niobium, tantalum, titanium, lanthanum, and occasionally A class of alloys that also contain iron. According to the different components in the alloy, they can be made into welding wire, powder for hard surfacing, thermal spraying, spray welding and other processes, and can also be made into castings and forgings and powder metallurgy parts. [0003] Among them, MP35N alloy is a high-performance ...

AI Technical Summary

Problems solved by technology

Coarse grains will not only reduce the yield strength of the alloy, but also reduce its fatigue strength, which is fatal for MP35N alloys used in complex environments

[0007] In the prior art, there is no effective method to overcome the problems of long heat treatment time, overheating and long heat preservation time.

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