Wear-resistant and abrasion-resistant mould and preparation process for forming protective coating on working surface of mould substrate

Abstract

The invention relates to a wear-resistant and abrasion-resistant and a preparation process for forming a protective coating on a working surface of a mould substrate. The wear-resistant and abrasion-resistant mould is provided with a substrate which is made of an iron-based material, and the working surface of the substrate is provided with a nanometer titanium aluminum nitrogen (TiAlN) coating which is prepared in a preset powder or synchronously-fed laser smelting and coating way and is combined with the working surface of the substrate in a metallurgical form. The preparation process for forming the protective coating on the working surface of the mould substrate comprises steps of: (1) pre-treating mould substrate; and (2) laser cladding. According to the wear-resistant and abrasion-resistant mould and the preparation process, the technical problems of the existing ion nitrogenization plus physical vapor deposition process for depositing a metal ceramic hard coating on a mould that a complicated surface or a large-size mould cannot be processed, the coating adhesion is required to further improve and the production equipment and production process are complicated can be solved.

Description

technical field [0001] The invention relates to a wear-resistant and corrosion-resistant mold and a preparation process for forming a protective coating on the working surface of the mold base. Background technique [0002] The quality, production efficiency and production cost of stamping parts are directly related to the precision quality of mold design and mold parts. The mold is in direct contact with the material (metal or non-metal) to separate or plastically deform the material to obtain the desired part. At present, the commonly used materials for domestic stainless steel forming dies are Cr12 (or Cr12MoV), high-speed steel, alloy cast iron and other iron-based alloys. These materials have high mutual solubility with stainless steel, and are prone to adhesion between the workpiece and the mold. The light ones reduce the life of the mold. Scratches and scratches will occur on the surface of the workpiece. In severe cases, the mold will be scrapped due to cold weldin...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is: in order to solve the existing ion nitriding + physical vapor deposition process to deposit a cermet hard coating on the mold, complex surfaces or large-sized molds cannot be processed, and the adhesion of the coating needs to be further improved As well as the relatively complicated technical problems of production equipment and its technology, the invention provides a wear-resistant and corrosion-resistant mold and a preparation process for forming a protective coating on the working surface of the mold base. The invention can process complex surfaces or large-sized molds, so The prepared laser cladding nano-TiAlN coating has excellent characteristics such as high hardness, high oxidation temperature, good thermohardness, strong adhesion, and small friction factor, which can significantly improve the service life of the mold, and has the advantages of simple production equipment and process