Powder metallurgy brake lining friction block for high-speed train and preparation method thereof

A technology of powder metallurgy and high-speed trains, applied in the field of powder metallurgy brake pad friction blocks for high-speed trains and its preparation, can solve the problems of low bonding strength between the back plate and the friction body, easy separation and falling off, etc. The effect of service life

Inactive Publication Date: 2016-06-01
BEIJING RAILWAY STAR FORTUNE HIGH TECH
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] The object of the present invention is to provide a powder metallurgy brake pad friction block for high-speed trains and its preparation method. The friction block prepared according to the method can overcome the separation of the back plate a

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  • Powder metallurgy brake lining friction block for high-speed train and preparation method thereof
  • Powder metallurgy brake lining friction block for high-speed train and preparation method thereof
  • Powder metallurgy brake lining friction block for high-speed train and preparation method thereof

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[0027] The following describes the technical solutions in the embodiments of the present invention clearly and completely with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0028] The embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings, such as figure 1 Shown is a schematic structural diagram of a powder metallurgy brake pad friction block for high-speed trains provided by an embodiment of the present invention. The friction block includes a copper-plated back plate and a friction body, and between the copper-plated back plate and the fric...

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Abstract

The invention discloses a powder metallurgy brake lining friction block for a high-speed train and a preparation method thereof. The friction block comprises a copper-plated backboard and a friction body. A transition layer is further arranged between the copper-plated backboard and the friction body and metallurgically fused completely with the copper-plated backboard and the friction body. The copper-plated backboard is made from a Q345B material through copper plating. The transition layer is formed by mixing metal powder and copper powder and then sintering the mixed metal powder and copper powder. The copper-plated backboard and the friction body are spliced together through the transition layer during sintering. The friction block prepared through the method can overcome the defect that a backboard and a friction body of an existing friction block are low in splicing strength and consequently the backboard and the friction body are separated and prone to falling, and the service life of a powder metallurgy brake lining made of the friction block is prolonged.

Description

technical field [0001] The invention relates to the technical field of train brake pads, in particular to a powder metallurgy brake pad friction block for high-speed trains and a preparation method thereof. Background technique [0002] The railway is an important infrastructure of the country, the main artery of the national economy and a popular means of transportation. In order to meet the needs of my country's national economic construction, my country has actually operated high-speed EMUs. In order to ensure the safe operation of high-speed EMUs, it is necessary to have a stable and good braking system. In China, brake pads are the key components and consumable parts of the braking system of high-speed trains. With the continuous increase of the running speed of high-speed EMUs, the braking load of trains has also increased significantly. When braking, the brake pads must keep the train running The huge kinetic energy generated at the time is converted into heat energy...

Claims

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Application Information

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IPC IPC(8): B22F7/08B22F1/00C22C30/02
CPCB22F7/08B22F1/0003C22C30/02
Inventor 郭明海
Owner BEIJING RAILWAY STAR FORTUNE HIGH TECH
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