Method for producing high-chromium alloy by doping aluminum-magnesium alloy and various rare metals

Abstract

The invention discloses a method for producing high-chromium alloy by doping an aluminum-magnesium alloy and various rare metals, and relates to the technical field of metallurgy. The method comprisesthe following steps that S1, the aluminum-magnesium alloy, the rare metals, chromium, silicon, boron and iron are refined through a high-energy ball milling method to obtain nanoscale powder of eachcomponent; S2, chromium powder and iron powder are mixed in proportion and then melted into molten iron; S3, the silicon powder, the boron powder and the rare metal powder are added into a liquid phase for melting; and S4, before tapping, the aluminum-magnesium alloy is added into the liquid phase for melting. All the components are refined into nanoscale powder through the high-energy ball milling method, grains of the prepared high-chromium alloy are finer, the high-chromium alloy has higher hardness, compactness and mechanical performance, a nanocrystalline layer is prepared on the surfaceof the alloy through a mechanical grinding method, the hardness of the surface of the high-chromium alloy is greatly improved, the abrasion resistance is improved obviously, and by adding the aluminum-magnesium alloy and the rare metals, the overall performance of the high-chromium alloy can be improved.

Description

Technical field[0001]The invention belongs to the field of metallurgical technology, and particularly relates to a method for producing high-chromium alloys by mixing aluminum-magnesium alloys and a variety of rare metals.Background technique[0002]High chromium alloy steel generally has high hardness and high wear resistance. Bearing steel and grinding ball steel often use high chromium alloy steel as raw materials. High chromium alloys are widely used in cement building materials, metal mines, coal slurry thermal power, chemical engineering, Powder preparation and ultra-fine deep processing in ceramic coatings, light industrial papermaking, magnetic materials and other industries. The product has high hardness, low wear, good toughness, and less crushing. However, the mechanical properties of the existing high-chromium alloys are not ideal. The wear resistance is not enough, and the overall hardness is low. The present invention uses aluminum-magnesium alloy, chromium and various r...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a method for producing high-chromium alloys by mixing aluminum-magnesium alloys and various rare metals. The aluminum-magnesium alloys, rare metals, chromium, silicon, boron and iron are refined into nano-scale powders by high-energy ball milling. The grains of the obtained high-chromium alloy are finer, and the high-chromium alloy has higher hardness, density and mechanical properties. The nanocrystalline layer is prepared on the surface of the alloy by mechanical grinding, so that the hardness of the surface of the high-chromium alloy is greatly improved. The wear resistance has been significantly improved. By adding aluminum-magnesium alloys and rare metals, the overall performance of high-chromium alloys can be improved, and the problem of unsatisfactory mechanical properties of existing high-chromium alloys has been solved.