A contact type rapid annealing equipment

Abstract

The invention discloses a contact type rapid annealing device, the device includes a conveying device, a heat treatment device, a cooling device and a winding device, the heat treatment device includes a metal / graphite composite material heating body, and the metal / graphite composite material heats The contact part between the body and the thin metal strip is provided with an atmosphere protection device, the cooling device includes a cooling cylinder, and the thin metal strip is sent out from the conveying device through the heat treatment device for contact annealing heat treatment and then enters the cooling cylinder for processing. After the cooling treatment, the winding recovery is finally completed by the winding device. The invention performs annealing heat treatment on the metal thin strip through contact heating, and the highest heating rate can reach 105~106K / s, which can not only realize continuous rapid annealing, greatly shorten the annealing process flow, improve production efficiency, and reduce the use of energy consumption. , which reduces the cost of thermal processing and is of great significance to 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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