Power-transferring metal friction sheet and its machining process

A power transmission and friction plate technology, applied in friction linings, mechanical equipment, etc., can solve problems such as adhesion, failure of the whole machine to operate, and low friction coefficient, achieve a stable and stable friction coefficient, improve combat capabilities, and improve the friction coefficient high effect

Inactive Publication Date: 2005-12-07
HANGZHOU ADVANCE GEARBOX GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The wet friction plate made of this mixed component after mixing and sintering has low allowable thermal load, low and unstable friction coefficient, and poor anti-caking performance, so failures will occur during actual use, including Friction and adhesion, deformation, breakage, etc., make the whole machine unable to operate
This kind of friction plate can only be used in places with low thermal load. Because it cannot withstand the working conditions of high specific pressure, high speed and high load, the material is easy to transfer, causing the friction coefficient to decrease. The lower the friction coefficient, the more friction The easier it is to slip, the more the friction will increase the total frictional heat generated by slipping, which will cause local and total temperature rise, and eventually lead to failure, so it is not suitable for the power transmission of the third-generation tank vehicles

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0008] Example 1, 62% bronze and brass mixture Cu, 5% metallic tin Sn, 5% metallic zinc Zn and 24% graphite and 4% silicon dioxide SiO 2 Mix in proportion; since the specific gravity of graphite is very different from metal copper, tin and zinc, in order to mix the powder evenly, so that it does not produce segregation or a small amount of segregation during handling or other operations, after adding a small amount of light oil to the mixture Then mix the materials and mix them evenly, and then sinter under gas protection and pressure. In order to improve the material strength and ensure good bonding between the friction material and the steel core plate, the sintering temperature should be increased normally or appropriately. Pressure up to 24kgf / cm 2 . The above embodiments, due to the use of a bronze and brass mixture matrix, contain a high proportion of graphite and a small amount of hard point material. Bronze and brass mixture matrix has higher strength than pure bronz...

Embodiment 2

[0009] Example 2, 67% bronze and brass mixture Cu, 4% metallic tin Sn, 4% metallic zinc Zn and 22% graphite and 3% silicon dioxide SiO 2 Mix in proportion; add a small amount of light oil to the mixture and mix it evenly, then sinter under gas protection and pressure, the sintering pressure is 20kgf / cm 2 .

Embodiment 3

[0010] Example 3, 72% bronze and brass mixture Cu, 3% metallic tin Sn, 3% metallic zinc Zn and 20% graphite and 2% silicon dioxide SiO 2 Mix in proportion; add a small amount of light oil to the mixture and mix it evenly, then sinter under gas protection and pressure, the sintering pressure is 16kgf / cm 2 .

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PUM

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Abstract

The power-transferring metal friction sheet consists of Cu 62-72 wt%, Sn 3-5 wt%, Zn 3-5 wt%, SiO2 2-4 wt% and graphite 18-26 wt%. It is made through mixing the said components with small amount of light oil, and sintering at pressure of 16-24 kgf / sq cm. The present invention has the features of high base material strength, good cooling effect, high and stable friction coefficient, no copper transfer in the friction surface, no adhesion between the friction pair and good friction performance.

Description

technical field [0001] The invention relates to a power transmission metal friction plate and a manufacturing process for realizing vehicle speed change, steering, parking, and torque conversion, especially a tank wet friction plate and a manufacturing process. Background technique [0002] In the prior art, the mixed components usually used in friction plates are mainly bronze-based, with low graphite content, such as the following combination of components and proportions: copper Cu content 60-75%, tin Sn content 5-8%, lead Pb The content is 6-10%, the graphite content is 5-9%, and the ingredients that can be added or not include silicon dioxide SiO 2 and iron Fe etc. The wet friction plate made of this mixed component after mixing and sintering has low allowable thermal load, low and unstable friction coefficient, and poor anti-caking performance, so failures will occur during actual use, including Friction and adhesion, deformation, breakage, etc., make the whole machi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16D69/02
Inventor 黄月初刘有德张国洪徐小和
Owner HANGZHOU ADVANCE GEARBOX GRP
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