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A high-strength wear-resistant material, friction material and plasma transfer arc welding production process thereof

A technology of wear-resistant materials and friction materials, which is applied in the field of automobile braking system and transmission system, can solve the problems of polluting the environment, difficulty in ensuring the consistency of binder phase and lubricating component workpiece quality, high process cost and labor cost, etc.

Active Publication Date: 2021-11-19
SEED TECH CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the existing metal sintered friction materials still have the following problems. 1. Pre-sintering is difficult to ensure the bonding strength of the binder phase and lubricating components and the consistency of the workpiece quality; 2. The steel core plate and steel back need to be processed Electrolytic plating and other pre-treatment processes are complex and pollute the environment; 3. Because of the easy oxidation of metals, sintering is carried out in a reducing atmosphere, the process is complicated, and the process cost and labor cost are high

Method used

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  • A high-strength wear-resistant material, friction material and plasma transfer arc welding production process thereof
  • A high-strength wear-resistant material, friction material and plasma transfer arc welding production process thereof
  • A high-strength wear-resistant material, friction material and plasma transfer arc welding production process thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0102] See Table 1, Table 1 is the details of the raw material composition and PTA surfacing process parameters provided by the embodiment of the present invention.

[0103] Table 1

[0104]

[0105] Wherein, the graphite powder of the present invention must be coated with an active metal. In the embodiment of the present invention, nickel gas atomization is used to coat graphite powder.

[0106] see figure 2 , figure 2 It is the cross-sectional structure diagram of the nickel-coated graphite powder prepared by the gas atomization method in Example 1 of the present invention. Among them, nickel is 75% and graphite 25%, and the size is 45-90 microns (nickel layer thickness is 3-5 microns).

[0107] According to the ratio in Table 1, the mixture is obtained, and under the PTA current in Table 1, the mixture is subjected to PTA surfacing on the surface of the lining to obtain the friction material.

[0108] The mixture in Example 1 of the present invention was analyzed,...

Embodiment 2

[0118] See Table 1, Table 1 is the details of the raw material composition and PTA surfacing process parameters provided by the embodiment of the present invention.

[0119] Wherein, the graphite powder of the present invention must be coated with an active metal. In the embodiment of the present invention, nickel gas atomization is used to coat graphite powder.

[0120] According to the ratio in Table 1, the mixture is obtained, and under the PTA current in Table 1, the mixture is subjected to PTA surfacing on the surface of the lining to obtain the friction material.

[0121] Characterize the friction material prepared in Example 2 of the present invention.

[0122] see Figure 5 , Figure 5 Microscopic metallographic diagram of the friction material prepared in Example 2 of the present invention.

[0123] Depend on Figure 5 It can be seen that the friction material structure of nickel-coated graphite powder and nickel-based alloy after PTA, it can be seen that the graph...

Embodiment 3

[0127] See Table 1, Table 1 is the details of the raw material composition and PTA surfacing process parameters provided by the embodiment of the present invention.

[0128] Wherein, the graphite powder of the present invention must be coated with an active metal. In the embodiment of the present invention, nickel gas atomization is used to coat graphite powder.

[0129] According to the proportions in Table 1, the mixture is obtained, and under the PTA current in Table 1, the mixture is subjected to PTA surfacing on the surface of the lining body, and at the same time, the movement of the PTA welding nozzle is programmed through the computer and the control system. Get the final friction material as designed in one go.

[0130] Characterize the friction material prepared in Example 3 of the present invention.

[0131] see Figure 6 , Figure 6 Microscopic metallographic diagram of the friction material prepared for Example 3 of the present invention.

[0132] Depend on ...

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Abstract

The invention provides a wear-resistant material, which comprises 1-28.5 parts by weight of active metals, 0.5-30 parts by weight of lubricating components and 70-95 parts by weight of nickel alloy matrix in terms of mass percentage of raw materials; the lubricating group Elements include graphite and / or molybdenum dioxide. The present invention adopts the method of plasma transferred arc (PTA) welding, and based on this, a new formula of wear-resistant material is obtained to cooperate with it, which can effectively adjust the composition of raw material powder such as graphite content in the metal matrix and friction material. To produce friction materials corresponding to different working conditions and technical requirements, and through PTA welding technology, it is directly formed on the surface of the friction material lining, which greatly simplifies the process flow and greatly improves production efficiency.

Description

technical field [0001] The invention belongs to the technical field of automobile brake systems and transmission systems, and relates to a wear-resistant material, a friction material and a production process thereof, in particular to a high-strength wear-resistant material, a friction material and a plasma transfer arc welding production process thereof. Background technique [0002] Friction material, a kind of wear-resistant material, is a component material used in power machinery that relies on friction to perform braking and transmission functions. Any mechanical equipment and various moving vehicles must have brakes or transmissions, and friction materials are the key components of such brakes or transmissions, and their main function is to absorb or transmit power through friction. It consists of a lining (base) and wear-resistant materials, mainly including brake linings (brake pads) and clutch faces (clutch plates). Brake pads are used for braking and absorbing ki...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F9/08B22F1/02C22C19/05B23K10/02
CPCC22C19/058B22F9/082B23K10/027B22F1/105B22F1/17
Inventor 徐跃华蔡明东
Owner SEED TECH CORP LTD