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Powder metallurgy composite material with high compounding ratio and manufacturing method

A powder metallurgy and composite material technology, applied in the field of powder metallurgy, can solve the problem of poor bonding uniformity between powder matrix and solid lubricant, solve segregation and strength reduction, improve mechanical properties and wear resistance, and improve wear resistance. and strength effects

Active Publication Date: 2021-03-09
成都威仕达新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method still has relatively large defects: on the one hand, the melting point of the existing solid lubricant is relatively high. If the melting point of the solid lubricant is higher than the melting point of the microporous prefabricated body alloy, the microporous prefabricated body damage, so this type of method is only suitable for adding low melting point additives such as plastics, lead, tin, copper, etc. to high melting point substrates such as tungsten or iron bases; Control, operation is relatively strict, improper operation will easily make the uniformity of the combination between the powder matrix and the solid lubricant not high
[0007] To sum up, the existing technology has corresponding problems whether it is improving the product or improving the method, and it cannot improve the wear resistance of the product while ensuring the mechanical properties of the product.

Method used

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  • Powder metallurgy composite material with high compounding ratio and manufacturing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] A powder metallurgy composite material with a high composite ratio, comprising the following components in parts by weight: 80 parts of copper-tin alloy powder with a particle size of -100 mesh, 5 parts of phosphor copper powder with a particle size of -400 mesh, and a particle size of -300 mesh 5 parts of micro-wax powder, 1 part of calcium carbonate powder with a particle size of -300 mesh, and 15 parts of nano-graphite carbon tubes.

[0053] A method for manufacturing a powder metallurgy composite material with a high composite ratio, comprising the following steps:

[0054] 1). Making the blank: taking by weighing each component except the nano-graphite carbon tube to prepare the mixture, and adding a forming lubricant, a pore-forming agent, a liquefying agent, and pressing the powder blank;

[0055] 2). Pre-burning-quenching: Under the protection of hydrogen, pre-fire at 450°C for 200 minutes, then in a continuous quenching furnace, under the protection of nitrogen...

Embodiment 2

[0061] A powder metallurgy composite material with a high composite ratio, comprising the following components in parts by weight: 95 parts of copper-tin alloy powder with a particle size of 150 mesh, 10 parts of phosphor copper powder with a particle size of -200 mesh, and micron powder with a particle size of -100 mesh 15 parts of wax powder, 10 parts of calcium carbonate powder with a particle size of -100 mesh, and 5 parts of nano graphite carbon tubes.

[0062] The manufacturing method of the powder metallurgy composite material with high compounding ratio, the steps are consistent with that of Example 1, and the obtained sample is recorded as Test Sample 2.

Embodiment 3

[0064] A powder metallurgy composite material with a high composite ratio, comprising the following components in parts by weight: 85 parts of copper-tin alloy powder with a particle size of -50 mesh, 8 parts of phosphor copper powder with a particle size of -300 mesh, and a particle size of -200 mesh 10 parts of micro-wax powder, 5 parts of calcium carbonate powder with a particle size of -200 mesh, and 6 parts of nano-graphite carbon tubes.

[0065] The manufacturing method of the powder metallurgy composite material with a high compounding ratio, the steps are the same as in Example 1, and the obtained sample is recorded as Test Sample 3.

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Abstract

The invention relates to the technical field of powder metallurgy, and provides a powder metallurgy composite material with high compounding ratio. The powder metallurgy composite material comprises,by weight, 80-95 parts of copper-tin alloy powder, 5-10 parts of phosphor copper powder, 5-15 parts of micro wax powder, 1-10 parts of calcium carbonate powder and 5-15 parts of nano graphite carbon tubes. A manufacturing method comprises the steps of blank manufacturing, presintering quenching, oil immersion, deoiling, re-pressing and sintering shaping, and the strength and wear resistance of thematerial can be effectively improved.

Description

technical field [0001] The invention relates to the technical field of powder metallurgy, in particular to a powder metallurgy composite material with a high composite ratio and a manufacturing method. Background technique [0002] Composite materials have the superposition of several material properties and even produce the effect of mutual matching and strengthening, so that various special properties can be obtained. Compared with the traditional smelting method, the powder metallurgy process has less restrictions on the type of material components, so it can easily produce unlimited types of composite materials, and is widely used. [0003] In many specific occasions, such as vacuum, high temperature, low temperature, liquid, corrosion, high cleanliness, extremely high contact stress, etc., the lubricating components required by the mechanism often cannot use liquid lubricating oil, and must use solid lubricating components. Therefore, graphite powder or molybdenum disu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F1/00B22F3/02B22F3/10B22F3/16B22F3/24B22F3/26
CPCB22F3/02B22F3/1021B22F3/16B22F3/26B22F3/24B22F1/102B22F1/103B22F1/105B22F1/10
Inventor 杨成
Owner 成都威仕达新材料科技有限公司
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