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Preparation method of friction material of yaw brake pad

A friction material and manufacturing method technology, applied in the direction of friction linings, chemical instruments and methods, other chemical processes, etc., can solve problems such as being unable to be used in heavy mechanical brake systems, and achieve good braking effect, water resistance and wear resistance. The effect of strong performance and long service life

Active Publication Date: 2015-03-18
贵州新安航空机械有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Now the production method of friction material is generally made of batching, mixing, hot pressing and spraying. For example, the invention patent of CN101813147A "a brake pad and its manufacturing method" discloses a method including batching, mixing, hot pressing Treatment, heat treatment, grinding and spraying steps to make brake pads, the disadvantage of the brake pads made by this method is: due to material characteristics and manufacturing defects, it cannot be used in the braking system of heavy machinery

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A method for manufacturing a friction material for a yaw brake pad. The raw materials are prepared through the steps of grinding, mixing, hot pressing, vacuum hardening and bonding. The specific steps are as follows:

[0023] Grinding, 30kg of iron powder, 15kg of flake graphite, 8kg of potassium feldspar, 15kg of red copper fiber, 8kg of steel wool fiber, 12kg of organic silicon modified phenolic resin, 5kg of potassium octatitanate, 5kg of antimony sulfide and 1kg of vanadium trioxide Grind them into fine particles with a particle size of 20-100 μm through a metal powder machine;

[0024] Mixing, put the raw materials contained in the grinding in step A into the mixer according to the amount, and the mixing time is 0.5h;

[0025] Hot pressing molding, adding the mixed raw materials in step B into the mold for molding, the molding temperature is 200°C, the pressure is 300kg / m㎡, and the holding time is 1h;

[0026] Vacuum hardening treatment, the friction material made...

Embodiment 2

[0029] Grinding, 35kg of iron powder, 12kg of flake graphite, 10kg of potassium feldspar, 10kg of copper fiber, 10kg of steel wool fiber, 10kg of organic silicon modified phenolic resin, 8kg of potassium octatitanate, 3kg of antimony sulfide and 0.5kg of vanadium trioxide The raw materials are respectively ground into fine particles with a particle size of 20-100 μm by a metal powder machine;

[0030] Mixing, put the raw materials contained in the grinding in step A into the mixer according to the amount, and the mixing time is 0.8h;

[0031] Hot press molding, put the mixed raw materials in step B into the mold for molding, the molding temperature is 230°C, the pressure is 350kg / m㎡, and the holding time is 1.5h;

[0032] Vacuum hardening treatment, the friction material made in step C will be placed in a vacuum machine at a temperature of 350°C for 4.5 hours;

[0033] Bonding, the friction material and the brake pad shell are bonded carefully by hot pressing, the temperature...

Embodiment 3

[0035] Grinding, 40kg of iron powder, 10kg of flake graphite, 12kg of potassium feldspar, 8kg of copper fiber, 13kg of steel wool fiber, 8kg of organic silicon modified phenolic resin, 10kg of potassium octatitanate, 5kg of antimony sulfide and 1kg of vanadium trioxide Grind them into fine particles with a particle size of 20-100 μm through a metal powder machine;

[0036] Mixing, put the raw materials contained in the grinding in step A into the mixer according to the amount, and the mixing time is 1h;

[0037] Hot pressing molding, adding the mixed raw materials in step B into the mold for molding, the molding temperature is 250°C, the pressure is 400kg / m㎡, and the holding time is 2h;

[0038] Vacuum hardening treatment, the friction material made in step C will be placed in a vacuum machine at a temperature of 400°C for 5 hours;

[0039] Bonding, the friction material and the brake pad shell are bonded carefully by hot pressing, the temperature is 300°C, the pressure is 50...

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Abstract

The invention discloses a preparation method of a friction material of a yaw brake pad, belonging to the technical field of brake systems. The preparation method comprises the steps of grinding raw materials, wherein the raw materials include the following components in percentage by weight: 30-40% of iron powder, 10-15% of flake graphite, 8-12% of potash feldspar, 8-15% of red copper fiber, 8-13% of steel wool fiber, 8-12% of organosilicone modified phenolic resin, 5-10% of potassium titanate, 2-5% of antimony sulfide and 0.2-1% of vanadium oxide; mixing all the raw materials; carrying out hot press molding; carrying out vacuum hardening treatment; binding. The friction material prepared by using the method is stable in friction coefficient, high in thermal decay stability, strong in water resistance and wear resistance, little in damage to counterparts during braking, particularly suitable for braking middle-large machines, good in braking effect, long in service life, capable of being formed through one-step high-temperature hot pressing, high in degree of mechanization, simplified in production process and high in rate of finished products.

Description

technical field [0001] The invention relates to the technical field of braking systems, in particular to a method for manufacturing friction materials for yaw brake pads. Background technique [0002] The basic requirements of brake pads for heavy machinery are: high hardness, high friction coefficient and strong wear resistance coefficient. Due to the limitation of the basic requirements, the existing heavy machinery brake pads are all semi-metallic mixture brake pads. It mainly uses metal materials as reinforcement and important mixture. The main advantage is that it can normally perform braking work at a relatively high temperature, and at the same time dissipate heat to the brake caliper and its components, and properly reduce the braking force. temperature. [0003] Now the production method of friction material is generally made of batching, mixing, hot pressing and spraying. For example, the invention patent of CN101813147A "a brake pad and its manufacturing method" ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K3/14F16D69/02
Inventor 范艳芳
Owner 贵州新安航空机械有限责任公司
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