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Material for manufacturing powder metallurgy brake block of electric locomotive

A powder metallurgy, electric locomotive technology, applied in other manufacturing equipment/tools, turbines, engine components, etc., can solve the problems of not meeting the train braking, affecting the driving safety, affecting the service life, etc., and achieves excellent machining performance. Reasonable and good demoulding effect

Active Publication Date: 2016-10-05
SUZHOU DONEKA NEW MATERIALS CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the temperature of the wheel tread increases to a certain level, the tread will be worn, cracked or peeled off, affecting the service life and driving safety
Therefore, traditional tread brake shoes cannot meet the needs of train braking

Method used

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  • Material for manufacturing powder metallurgy brake block of electric locomotive
  • Material for manufacturing powder metallurgy brake block of electric locomotive
  • Material for manufacturing powder metallurgy brake block of electric locomotive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] 1. Prepare the raw materials according to the following proportions by weight:

[0050]

[0051]

[0052] 2. Under normal temperature, iron powder, copper powder, additives and zinc stearate are uniformly mixed to obtain the first premix; then natural graphite and kerosene are uniformly mixed to obtain the second premix; The first premix and the second premix were added to the mixing equipment and mixed for 7 hours to prepare the premix.

[0053]3. Put the premixed material in a mold for pressing treatment. The pressing equipment is a 315-ton hydraulic press with a pressing specific gravity of 5.3 to obtain a tile-shaped powder metallurgy brake shoe friction block blank.

[0054] 4. Roast the powder metallurgy brake shoe friction block blank, firstly increase the temperature of the sintering furnace to 1050°C within 5.5 hours, then keep it at this temperature for 4.5 hours, and then cool it to room temperature with cold water to obtain a tile-shaped Powder metall...

Embodiment 2

[0061] 1. Prepare the raw materials according to the following proportions by weight:

[0062]

[0063] 2. Under normal temperature, iron powder, copper powder, additives and zinc stearate are uniformly mixed to obtain the first premix; then natural graphite and kerosene are uniformly mixed to obtain the second premix; The first premix and the second premix were added to the mixing equipment and mixed for 6 hours to prepare the premix.

[0064] 3. Put the premixed material in a mold for pressing treatment. The pressing equipment is a 315-ton hydraulic press with a pressing specific gravity of 5.6 to prepare a powder metallurgy brake shoe friction block blank.

[0065] 4. Roast the powder metallurgy brake shoe friction block blank, firstly increase the temperature of the sintering furnace to 1000°C within 5 hours, then keep it at this temperature for 6 hours, and then cool it to room temperature with cold water to obtain a tile-shaped powder metallurgy Brake shoe friction b...

Embodiment 3

[0072] 1. Prepare the raw materials according to the following proportions by weight:

[0073]

[0074] 2. Under normal temperature, iron powder, copper powder, additives and zinc stearate are uniformly mixed to obtain the first premix; then natural graphite and kerosene are uniformly mixed to obtain the second premix; The first premix and the second premix were added to the mixing equipment and mixed for 10 hours to prepare the premix.

[0075] 3. Put the premixed material in a mold for pressing treatment. The pressing equipment is a 315-ton hydraulic press with a pressing specific gravity of 5.0 to prepare a powder metallurgy brake shoe friction block blank.

[0076] 4. Roast the powder metallurgy brake shoe friction block blank, firstly increase the temperature of the sintering furnace to 1100°C within 6 hours, then keep it at this temperature for 3 hours, and then cool it to room temperature with cold water to obtain a tile-shaped powder metallurgy Brake shoe friction ...

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Abstract

The invention provides a material for manufacturing a powder metallurgy brake block of an electric locomotive. The brake block is a brake pad used for braking of the electric locomotive and comprises iron powder, copper powder, natural graphite, an additive and lubricant. The additive comprises molybdenum disulfide, silicon carbide and nickel powder. The lubricant comprises zinc stearate and kerosene. The electric locomotive brake block which is made of the material provided by the invention is resistant to heat, stable in friction coefficient under the high-load condition, small in attenuation and abrasion, good in heat conduction, capable of quickly conducting out the friction heat of the surface of a friction pair and good in physical, chemical and mechanical properties.

Description

technical field [0001] The invention belongs to the field of materials, relates to the field of railway locomotive accessories materials, in particular to a powder metallurgy brake shoe for medium and low speed electric locomotives. Background technique [0002] With the rapid development of the national economy and the continuous improvement of people's living consumption level, the requirements for the convenience and comfort of transportation are also constantly increasing. Train notification has become an inevitable trend in the development of train transportation, and the relative safety problems have been paid more and more attention by people. The braking performance of the train is an important factor to determine the safe transportation of the train. During the operation of the train, the parts that directly rub against the wheels to stop the train are the brake shoes. The brake shoe is the most critical safety part of the train. The quality of all braking effects i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F1/00C22C30/02B22F5/00
Inventor 林勇朱约辉
Owner SUZHOU DONEKA NEW MATERIALS CORP LTD
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