Contact type rapid annealing equipment

Abstract

The invention discloses contact type rapid annealing equipment. The contact type rapid annealing equipment comprises a conveying device, a heat treatment device, a cooling device and a winding device; the heat treatment device comprises a metal / graphite composite material heating body; an atmosphere protection device is arranged at the contact part of the metal / graphite composite material heating body and a metal thin strip; and the cooling device comprises a cooling barrel. The metal thin strip is sent out from the conveying device and subjected to contact type annealing heat treatment through the heat treatment device, then enters the cooling barrel to be cooled, and finally is wound and recycled through the winding device. According to the invention, annealing heat treatment is carried out on the metal thin strip through contact type heating, and the highest heating rate can reach 105-106 K / s, so that continuous and rapid annealing can be realized, the annealing process flow is greatly shortened, the production efficiency is improved, the energy consumption is reduced, the hot working cost is reduced, and the contact type rapid annealing equipment has important significance on actual production.

Description

technical field [0001] The invention relates to the technical field of rapid heat treatment of metal materials, in particular to a contact type rapid annealing device for Fe-P-C-B series amorphous metal strips. Background technique [0002] Annealing is a heat treatment process in which the metal is heated to a certain temperature, kept for a certain period of time, and then cooled at an appropriate rate. Annealing heat treatment involves many process parameters, including annealing temperature, heating rate, holding time, cooling rate and atmosphere protection. Through appropriate annealing heat treatment, optimization effects such as releasing stress, improving material performance, and producing special microstructure can be achieved. For example, continuous and rapid annealing of Fe-P-C-B series amorphous metal strips through the equipment of the present invention can make it release the internal Stress, and the precipitation of α-Fe grains to form a highly fine nanostr...

AI Technical Summary

Problems solved by technology

This heat treatment method not only consumes a lot of energy and has low production efficiency, but also requires a lot of labor to connect and disassemble the amorphous strips, and even exposes the staff to the risk of high temperature burns, and a large amount of heat treatment is easy to make amorphous strips The latent heat of crystallization occurs inside the crystal alloy, accompanied by the formation of Fe which is detrimental to the soft magnetic properties. 3 (B, P, C) compound, which reduces the saturation magnetization of the alloy

In addition, the current furnace annealing method commonly used in the industry makes the amorphous strip brittle after annealing, and is prone to breakage during subsequent storage, handling, and transformer assembly processes, which is one of the problems that limit its wide application.

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