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Asbestos-free metal-free composite lubrication type drum-shaped brake block for cars and method for producing the same

A compound lubricant and asbestos-free technology, applied in friction linings, mechanical equipment, etc., can solve problems such as difficult blending, braking noise, and easy rust, and achieve easy operation, stable friction performance and recovery performance, and production The effect of simple process

Inactive Publication Date: 2009-07-22
NINGGUO FEIYING AUTO SPARE PARTS +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Steel fiber conducts heat, has certain strength and wear resistance, but steel fiber also has some disadvantages: high density, high price, easy to rust, hard quality, easy to damage the pair, easy to generate braking noise
Drum brake pads for domestic automobiles generally only use a relatively single lubricant
Because lubrication and guaranteed friction are a pair of requirements that are not easy to adjust, so lubrication is generally not considered enough, which becomes a reason why the brake pads are not wear-resistant.
Moreover, the development and research of brake pads focuses on disc brake pads, and it is difficult to do less research on drum brake pads.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] Asbestos-free and metal-free composite lubricating drum brake pads for automobiles, the preparation method of which is as follows:

[0024] (1), take binder 12-20% according to given ratio; Reinforcing fiber 15-30%; Friction enhancer 3-16%; Composite lubricant 16-30%; Filler 20-30% mix, mix the mixture Put it in a high-speed mixer and mix it evenly, then place it in a specified mold, pressurize and heat it;

[0025] (2), put the formed brake pad in an oven and bake at a temperature of 160°C for 8 hours;

[0026] (3) Process the heat-treated brake pads on the outer arc, inner arc, end face and drilling;

[0027] (4) Finally, inspect and package the processed brake pads.

[0028] The composite lubricant includes flake graphite, artificial graphite particles, flexible graphite flakes, expanded graphite, mica or coke and various sulfides, and can also be a mixture of various components;

[0029] The reinforcing fibers are mineral fibers, ceramic fibers, glass fibers, org...

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Abstract

The invention discloses asbestos-metal-free composite lubricated drum brake sheet and a preparation method thereof. The method comprises the following steps: firstly, weighing 12-20% of a binder, 15-30% of reinforcing fiber, 3-16% of a friction reinforcing agent, 16-30% of a composite lubricant and 20-30% of a packing according to given proportions, mixing the materials, putting the mixture in a high-speed blender for even mixing, pressurizing, heating and shaping the mixture in a specified die; heating the shaped brake sheet at the temperature of 160 DEG C for 8h; machining the heated brake sheet on an outer arc, an inner arc, an end surface and a bore hole; and finally inspecting and packaging the machined brake sheet. The asbestos-metal-free composite lubricated drum brake sheet obtained through the method has stable friction property and stable restorability, simple production process and convenient operation.

Description

Technical field: [0001] The invention belongs to the technical field of friction materials for automobiles, and in particular relates to an asbestos-free and metal-free composite lubricating drum brake pad for automobiles and a preparation method thereof. Background technique: [0002] Automobile brake pads are key products and consumables for safe driving of automobiles. At present, brake pads have been developed considerably. Generally, domestic and foreign automobile brake pads are made of semi-metallic materials, characterized by steel fibers. Steel fiber conducts heat, has certain strength and wear resistance, but steel fiber also has some disadvantages: high density, high price, easy to rust, hard quality, easy to damage the pair, and easy to generate braking noise. Drum brake pads for domestic automobiles generally only use a relatively single lubricant. Because lubrication and guaranteed friction are a pair of requirements that are not easy to blend, lubrication i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16D69/02C04B35/80
Inventor 徐申二孙奇春徐飞鹏
Owner NINGGUO FEIYING AUTO SPARE PARTS
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