Preparing method for brake pad wear-resisting material

Abstract

The invention discloses a preparing method for a brake pad wear-resisting material. The brake pad wear-resisting material is composed of 45-55 parts of titanium powder, 5-9 parts of molybdenum disulfide, 10-20 parts of nanometer copper oxide, 3-10 parts of micro-wax powder, 15-19 parts of aluminum powder, 10-15 parts of copper iodide, 10-20 parts of stainless steel powder, 3-8 parts of auxiliaries, 3-6 parts of potassium oxide, 4-8 parts of silicon nitride, 1-3 parts of vanadium carbide and 5-8 parts of nickel silicide. The auxiliaries are composed of phenylacetic acid lauryl alcohol, xylylene diisocynate and sodium ferrate according to the weight ratio of 1:1:2. The brake pad wear-resisting material prepared through the method has high hardness and good wear resistance, rare earth elements and nano particles are matched, the metallographic phase structure is improved, the tissue is compact, the microscopic structure is good, holes are very few, the structure rigidity, hardness, fatigue resistance and tensile strength performance are good.

Description

technical field [0001] The invention belongs to the field of powder metallurgy and relates to a preparation method of a wear-resistant material for brake pads. technical background [0002] The brake pad is one of the important components of the disc brake device of the EMU, which directly affects the running safety of the train. The most basic requirement for the brake pad is that its material and structure have the ability to absorb braking kinetic energy, convert this kinetic energy into heat energy and dissipate it into the air, while the material, structure and performance of the brake pad are not damaged. Brake pads must not cause significant damage to the brake disc. With the increase of train speed, the braking load is getting bigger and bigger, and the requirements for brake pads are getting higher and higher. Powder metallurgy technology is not limited by smelting. It can add alloy components or other structural components, and adjust it according to requiremen...

AI Technical Summary

Problems solved by technology

Nanomaterials can meet the requirements that traditional materials cannot meet. At the same time, the application of nanomaterials can meet the special requirements for material performance in the field of metal processing. However, there are few disclosures about the application of nanomaterials in powder metallurgy technology in the prior art. and immature technology

At present, the main problem in the use of nanomaterials is the agglomeration of nanopowder particle materials, which leads to the particle agglomeration of powder particle materials due to the surface tension of particles during use, which leads to the addition of chemical decomposition agents for agglomeration during use. The decomposition of particles can be used normally, but this will increase the difficulty of use and chemical pollution, while reducing the use efficiency, which limits the application of this nanomaterial in powder metallurgy technology