Steel plate multicomponent alloy co-cementation method

Abstract

The invention relates to a heat treatment processing method for steel plate multicomponent alloy co-cementation, overcoming the shortcoming that anti-corrosion performance can not be achieved in the current heat treatment co-cementation process. The method comprises the following steps: 1, adding cementation promoter and floating balls into prepared powdery co-cementation alloy elements which comprise 1.5-2% of Zn powder, 0.2-0.7% of Al powder and 0.05-0.2% of rare earth powder by weight percent; 2, putting steel plates to be subject to heat treatment to a co-cementation furnace and then fixing, putting the co-cementation alloy elements into the co-cementation furnace, and then sealing the co-cementation furnace, wherein the steel plates are spaced and arranged in parallel; 3, vacummizing the co-cementation furnace and simultaneously starting to heat until 400-500 DEG C, insulating for 6-8 hours, and then cooling down slowly; and 4, taking the steel plates out of the furnace and carrying out anti-corrosion test comprising thickness test and rusty spot test. Through the co-cementation heat treatment, the alloy elements are cemented into the surfaces of the steel plates to form anti-corrosion layers, and the size of the steel plates is not changed, and the formed anti-corrosion layers have better effects.

Description

technical field [0001] The invention relates to a heat treatment process, in particular to a heat treatment process for multi-element alloy co-infiltration of steel plates. Background technique [0002] Most of the embedded parts are used outdoors in relatively harsh environments, such as alternating high and low temperatures, erosion by rain, etc. Therefore, it is necessary for the surface of the embedded parts to have the characteristics of some alloy steel and special steel, such as heat resistance, Grinding, anti-oxidation, corrosion resistance, etc., so chemical heat treatment is required for the anchor. Generally, the metal infiltration method is used. The metal workpiece is placed in the infiltration agent containing infiltrated metal elements, heated to a certain temperature, and kept for an appropriate time. The active atoms infiltrated into the metal elements generated by the thermal decomposition of the penetrating agent are adsorbed on the surface of the workpiec...

AI Technical Summary

Problems solved by technology

[0006] The invention solves the disadvantage that the existing heat treatment co-infiltration process does not achieve the anti-corrosion performance, and provides a steel plate multi-element alloy co-infiltration method for heat treatment to improve the anti-corrosion performance of the steel plate

[0007] The present invention also solves the problem that the size of the steel plate is easily changed by using hot-dip galvanizing or painting in the prior art, and provides a multi-component alloy co-infiltration method for the steel plate, which can produce an anti-corrosion layer without changing the size of the steel plate