Iron-based ceramic powder metallurgy and preparing method thereof

Abstract

The invention discloses a metallurgy technology and particularly discloses an iron-based ceramic powder metallurgy and a preparing method and process thereof. The iron-based ceramic powder is prepared by the steps as follows: 1, mixing iron powder with TiN, Al2O3, CrO2 and SiC according to a certain ratio, ball-milling to 3-10 microns and fully uniformly mixing; 2, adding a resin adhesive according to a certain ratio and uniformly stirring and mixing; 3, pressing and molding by an oil press; 4, sintering to 200-1250 DEG C and sintering in a temperature zone mode; 5, polishing: placing a sintered part into a roll or a vibration rotary polisher for polishing by about 2 hours. According to the iron-based ceramic powder metallurgy and the preparing method and process thereof, the preparing method is characterized in that the iron powder is taken as a base material and ceramic powder materials are added for mixing, pressing and sintering to prepare the part, the defects of a powder metallurgy part are mainly solved, the anti-corrosion and anti-rusting functions are enhanced, the hardness of the base body is improved and the high temperature resistance and grinding resistance are improved.

Description

technical field [0001] The invention relates to a metallurgical technology, in particular to an iron-based ceramic powder metallurgy and a preparation method and process thereof. Background technique [0002] Iron-based powder metallurgy uses iron powder as the base material, adding a small amount of precious metal powder, such as tungsten, molybdenum, chromium, etc., and then sintering at high temperature after being pressed by a mold. Because it can form parts with more complex shapes, it can replace Parts with difficult-to-process shapes have certain cost advantages. During high-temperature sintering, a uniform microporous matrix can be formed, which has good oil storage and self-lubricating properties, and has certain wear resistance. Therefore, it is used in industrial parts However, its anti-corrosion and anti-rust functions are poor, the hardness of the substrate is low, and its high-temperature abrasive resistance is poor, which limits its advantages. Contents of t...

AI Technical Summary

Problems solved by technology

[0002] Iron-based powder metallurgy uses iron powder as the base material, adding a small amount of precious metal powder, such as tungsten, molybdenum, chromium, etc., and then sintering at high temperature after being pressed by a mold. Because it can form parts with more complex shapes, it can replace Parts with difficult-to-process shapes have certain cost advantages. During high-temperature sintering, a uniform microporous matrix can be formed, which has good oil storage and self-lubricating properties, and has certain wear resistance. Therefore, it is used in industrial parts However, its anti-corrosion and anti-rust functions are poor, the hardness of the substrate is low, and its high-temperature abrasive resistance is poor, which limits its advantages.