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Material formulation for high-strength powder metallurgy valve guide pipe

A technology of powder metallurgy and valve guides, which is applied in the field of raw materials for high wear-resistant powder metallurgy valve guide materials, and can solve the problems of inability to reduce automobile gearboxes and high prices

Inactive Publication Date: 2013-11-20
诸城市同翔机械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the factors of imported products, its price is relatively high, and it is impossible to reduce the cost of automobile gearboxes and even automobiles

Method used

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  • Material formulation for high-strength powder metallurgy valve guide pipe
  • Material formulation for high-strength powder metallurgy valve guide pipe
  • Material formulation for high-strength powder metallurgy valve guide pipe

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Embodiment Construction

[0009] The raw materials for preparing the valve guide of the present invention will be described in detail below by way of examples.

[0010] The material formula of the present invention is as follows: the raw material includes water atomized iron powder, copper powder, ferrophosphorus powder, graphite powder and fine paraffin wax powder, wherein the content of copper powder is 1.0-2.0%, and the content of ferrophosphorus powder is 0.2-0.5% %, the content of graphite powder is 0.6-1.0%, the content of fine paraffin powder is 0.8%, and the rest is water atomized iron powder.

[0011] The preparation raw materials of the above-mentioned materials can be used to manufacture high-strength wear-resistant powder metallurgy valve guides by the following manufacturing method.

[0012] The first is the raw material preparation step. In the present invention, the main raw material for manufacturing the valve guide is water atomized iron powder, and the rest are auxiliary materials: c...

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Abstract

The invention discloses a material formulation for a high-strength powder metallurgy valve guide pipe, which is characterized in that the materials comprise water atomized iron powder, copper powder, ferrophosphor powder, graphite powder and superfine paraffin powder, wherein the water atomized iron powder is base powder; and in the water atomized iron powder, the content of the copper powder is 1.0 to 2.0 percent, the content of the ferrophosphor powder is 0.2 to 0.5 percent, the content of the graphite powder is 0.6 to 1.0 percent, the content of the superfine paraffin powder is 0.8 percent, and the residual part is the water atomized iron powder. Through the formulation of the materials, the material formulation can effectively reduce the manufacturing cost of the valve guide pipe.

Description

technical field [0001] The invention relates to a powder metallurgy manufacturing process, in particular to the preparation raw material of a powder metallurgy valve guide material with high wear resistance. Background technique [0002] The valve guide is a conventional mechanical part that can be used in automobile engines, and an average of 8 pieces are required for each engine. At present, the valve guides used in automobile engines are made of ductile iron or powder metallurgy valve guides. Due to the increasingly high requirements of automobiles on engines and the widespread application of unleaded gasoline, the market for high wear-resistant valve guides is very much in demand, but because this technology is mainly in the hands of foreign advanced countries, foreign manufacturers only provide products, not material formulas . Due to the factors of imported products, their prices are relatively high, which cannot reduce the cost of automobile gearboxes and even autom...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F1/00
Inventor 王舜昌曹刚王春刚徐华
Owner 诸城市同翔机械有限公司