Metal powder and method for processing high-performance metal parts using metal powder

Abstract

The invention discloses a metal powder and a method for processing high-performance metal parts by using the metal powder. The metal powder of the invention is composed of the following raw materials in weight percentage: electrolytic copper powder 3.1-3.4%, nickel powder 0.08-0.19%, Molybdenum powder 0.05-0.15%, cobalt powder 0.05-0.15%, ferrophosphorus powder 0.3-0.5%, iron-chromium alloy powder 1.2-1.4%, manganese sulfide powder 0.5-0.8%, graphite powder 0.3-0.6%, wax powder 0.2- 0.3%, and the balance is atomized pure iron powder. The metal powder formula provided by the invention is obtained through repeated tests and inspections based on the densification change and phase transformation mechanism of the compact in each stage of sintering. In addition, the powder metallurgy method of the invention can produce high-performance metal parts meeting the requirements.

Description

technical field [0001] The invention relates to the technical field of powder metallurgy, in particular to a method for processing high-performance metal parts by using metal powder. Background technique [0002] Powder metallurgy mainly uses metal powder as raw material, and through certain processing technology, it can be turned into the metal parts we need. The advantage of the powder metallurgy process is that it can process special materials, which can produce refractory metals, compounds, pseudoalloys, and porous materials. In addition, the powder metallurgy process saves metal and reduces costs. Because powder metallurgy can be pressed into final size compacts, no machining is required. [0003] The disadvantage of the powder metallurgy process is that the strength and toughness of powder metallurgy products are poor. Since the internal pores of the compact formed by powder compaction cannot be completely eliminated, the strength and toughness of powder metallurgy p...

AI Technical Summary

Problems solved by technology

[0003] The disadvantage of the powder metallurgy process is that the strength and toughness of powder metallurgy products are poor

Due to the compact formed by powder pressing, the internal pores cannot be completely eliminated. Therefore, the strength and toughness of powder metallurgy products are inferior to those of castings and forgings with corresponding components, so powder metallurgy cannot be made into large-scale products.

[0004] In the past, the working environment of precision guides, pistons, compression valve bodies, and automobile shock absorbers was harsh, and parts with high performance requirements such as precision, strength, and hardness needed to be produced by casting. The cost of the parts produced is high, and the waste of raw materials is serious