Treatment method for thermally treating surface oxide layer on composite layer of explosive clad plate

Abstract

The invention relates to a treatment method for thermally treating a surface oxide layer on a composite layer of an explosive clad plate. The treatment method comprises the steps of pretreatment, rolling, traying, first abrasive cleaning, second abrasive cleaning, subsequent treatment and the like. The treatment method provided by the invention generates small damages of the composite layer; the composite layer is lifted to be observed after abrasive cleaning is carried out for a certain time so that the abrasive cleaning progress can be controlled conveniently and the abrasive cleaning condition of the oxide layer on the composite layer can be observed conveniently; little pickling solution is consumed; environmental pollution is low; the treatment speed is high; the process is simple; requirements on precision of the equipment are low; labor and cost are saved; and compared with a simple chemical method or mechanical method, the treatment method achieves higher production efficiency.

Description

technical field [0001] The invention belongs to the technical field of explosive cladding, and in particular relates to a method for treating an oxide layer on the surface of an explosive cladding plate heat-treated cladding layer. Background technique [0002] In the prior art, metal composite panels manufactured by the explosion method need heat treatment because the normalized state of the explosive composite panels is destroyed during explosion. In the process of heat treatment, if there is no protection of inert gas, after heat treatment, a thick and dense oxide layer will generally be formed on the surface of the clad metal, commonly known as oxide skin. The color of the oxide skin is black, gray or even green. It is usually necessary to heat the temperature above 500°C during the heat treatment of the clad metal of the composite board. If you want to carry out gas protection throughout the heat treatment, the requirements for the heat treatment process and equipment ...

AI Technical Summary

Problems solved by technology

[0004] 1. Mechanical method, that is, using polishing wheels and other equipment to perform physical polishing to grind off the oxide layer on the surface of the cladding layer to expose the essence of the metal; this method will cause more loss to the cladding layer when the mechanical precision is not high. And usually need to be polished many times, the production efficiency is low

[0005] 2. Chemical method, using pickling passivation agent to smear on the surface of the composite layer, using chemical reaction to remove the oxide layer on the surface, exposing the metal essence; this method is relatively simple to operate, but it consumes a lot of pickling passivation agent, which will pollute the environment more serious

During pickling, the generated hydrogen has the effect of mechanically peeling off the intolerant substances, which is beneficial to the removal of impurities, but the infiltration of atomic hydrogen into the metal matrix also has the side effect of hydrogen embrittlement