A preparation system for iron powder for powder metallurgy

Abstract

One kind of powder metallurgy of the present invention provides a system prepared iron powder, iron powder raw material comprises a chain double-chamber drying apparatus, which employs the double-drying chamber and dried cavity structure, the gas is heated using waste heat exhausted from the tunnel kiln dry. Iron powder raw material charging device employs a round cardboard sleeve means, the primary surface of the obtained reduced iron is smooth, easy to clean. Tunnel kiln with a reducing iron powder, and the top wall of the kiln is mounted a third zone covers the entire top of the kiln kiln roof tank, hot water in the crown to the hot water outlet tank through the hot water supply and heating system system, greatly saving energy. A reduced iron brushing device to solve the industry's long-term manual brushing and eliminating health hazards of dust brushing workers. Powder metallurgy of the present invention is obtained with high purity iron powder, the apparent density, high compressive resistance, high strength, high formability, it can be directly made porous, semi-dense or fully dense materials and articles.

Description

technical field [0001] The invention relates to a preparation system of iron powder for powder metallurgy. Background technique [0002] Powder metallurgy is a technology for producing metal or using metal powder as raw material, forming and sintering to manufacture metal materials, composite materials and various types of products. Powder metallurgy has similarities with the production of ceramics. Therefore, a series of new powder metallurgy technologies can also be used for the preparation of ceramic materials. Due to the advantages of powder metallurgy technology, it has become the key to solve the problems of new materials and plays a pivotal role in the development of new materials. [0003] Powder metallurgy has unique chemical composition and mechanical and physical properties, which cannot be obtained by traditional casting methods. The use of powder metallurgy technology can directly make porous, semi-dense or fully dense materials and products, such as oil beari...

AI Technical Summary

Problems solved by technology

[0007] Problem is: owing to will circle outer cylinder 27, circle inner cylinder 28 hang out, the 3rd fixed rib 25 will pass through the raw material iron powder of packing in the cavity between circle outer cylinder 27, circle inner cylinder 28, will Make the surface of the raw iron powder slide out of the deep groove, and the coal powder in contact will be scattered into the deep groove on the surface of the raw iron powder, so that the coal in the deep groove on the surface of the obtained direct reduction iron powder needs to be manually cleaned by a large amount of manpower. Increase cleaning costs and seriously affect product quality

[0008] (3) The direct reduction iron powder tunnel kiln has an old structure, high energy consumption and high production cost

[0009] (4) There is no cleaning device for primary reduced iron, and manual cleaning is used for primary reduced iron, which requires many people, makes cleaning very difficult, labor-intensive, cleaning is not clean, and the efficiency is low

There are many impurities in the primary reduced iron and iron powder after being selected by the magnetic separator, which affects the purity and quality of the primary reduced iron and iron powder

The obtained primary reduced iron powder has high impurity content, which cannot meet the technical requirements of iron powder for powder metallurgy

Images