CN104315050A - Novel asbestos-free low-metal brake pad - Google Patents

Abstract

The invention discloses a novel asbestos-free low-metal brake pad, and relates to the technical field of brake pads. The novel asbestos-free low-metal brake pad consists of the following components in percentage by mass: 20 percent of steel fiber, 10 to 20 percent of reinforced fiber, 8 to 12 percent of resin, 15 to 30 percent of friction performance regulator, 20 to 40 percent of filler, 3 to 10 percent of butadiene-acrylonitrile rubber powder and 2 percent of aramid fiber. According to the novel asbestos-free low-metal brake pad, the selection of each reinforced fiber and solid lubricant in an asbestos-free formulation design is crucial for the comprehensive performance of a product, and multiple solid lubricants are matched to form a layer of protective film on a friction force, so that functions of coupling protection, stable braking, abnormal noise reduction and the like can be realized.

Description

Asbestos-free micro-metal brake pad

Technical field

The present invention relates to brake block technical field, be specifically related to a kind of asbestos-free micro-metal brake pad.

Background technique

Along with developing rapidly of science and technology, Brake Products is more and more high to the requirement of friction material, except at a high speed, and the requirements at the higher level such as high temperature, outside the Security in the bad working environments situations such as high pressure and travelling comfort, also been proposed energy-conservation, environmental protection in recent years, clean.

In China's the 12 five-year plan, propose clearly, the most important thing of the national economic development is energy-conservation, environmental protection, and steadily, the Scientific Outlook on Development continued, makes China develop into one in a short time and stablize, flourishing power.

In 30 years of reform and opening-up, the friction industry of China is also the same with national all trades and professions, there is significant progress, be main from the asbestos friction material at the beginning of last century 80, develop into the semimetal goods of the nineties gradually, 2000 later mixes and to optimize and nonmetal, and non-asbestos (NAO) goods are main.Successively release ceramic fibre brake component again in recent years.And move towards domestic and international market step by step.Although still belong to minority in the manufacturer of China's ceramic brake, universal not enough, really also illustrate that the developing steps forward international market of China's friction industry is drawn close and integrates with.In order to realize the overall technique production domesticization of ceramic brake, China successively last century the nineties from having introduced many ceramic fiber production technology lines abroad, established certain technical foundation for China progressively realizes Brake Products ceramic.

Along with the development and progress of society, the mankind are more and more high to the requirement of environmental protection, progressively urbanization of villages is realized in China, urban population increases year by year, people require also more and more higher to the overall situation of life, and the develop rapidly in recent years of China's automobile, enter prostatitis, the world (producing about 1,500 ten thousand per year).To just think so many automobile brake sheets, if the abrasive dust of every day has severe contamination, so the air quality in town and country will be had a strong impact on, if all brake blocks are all used instead free of contamination brake block, the change of matter will be there is in our inhabitation overall situation ... therefore the fine brake block of clean composite ceramic not hard to imagine, in future transportation industry, fine development prospect and huge market competition potential will be had.

Summary of the invention

Technical problem to be solved by this invention is to provide the asbestos-free micro-metal brake pad of a kind of Security, travelling comfort and wear resistance aspect superior performance.

Technical problem to be solved by this invention realizes by the following technical solutions:

A kind of asbestos-free micro-metal brake pad, is made up of the component of following mass percent:

Steel Fibre 20%

Reinforcing fiber 10%-20%

Resin 8%-12%

Frictional property regulator 15%-30%

Filler 20%-40%

Nitrile rubber powder 3%-10%

Aramid fiber 2%.

Described frictional property regulator is one or more in sulphide, graphite or cashew nut oil.

Described reinforcing fiber can select inorfil or organic fiber, as glass fibre, carbon fiber, Orlon fiber, polyester fibre, nylon fiber etc.

A kind of asbestos-free micro-metal brake pad, comprises following process step:

1) prepare burden, batch mixing: weigh by above-mentioned recipe requirements, and to send in plough type batch mixer batch mixing 20 minutes;

2) steel backing prepares: first with special cleaning machine cleaning steel backing surface blot, then carry out ball blast with Shot-blasting Machine and make steel backing reach the roughness of expection, finally carry out glue spraying process;

3) hot-forming: to be 150-160 DEG C by above-mentioned ready batching and steel backing hot pressing die in temperature, pressure is 35MPa, the time is hot-forming under the condition of 10min, exit 3-6 time in the 1-3min that hot pressing starts, then carry out pressurize, the required dwell time is determined according to 0.5min/mm according to the thickness of goods;

4) heat treatment: by above-mentioned hot-forming after goods put into temperature control drying oven, heat-treat condition: 140 DEG C two hours, 160 DEG C two hours, 180 DEG C two hours, with stove cooling after through plain grinding, chamfering, fluting, electrostatic spraying, mark, riveted joint, installation accessories, the obtained finished product of packaging;

5. check, warehouse-in.

The invention has the beneficial effects as follows:

1) the few metallic friction material superior performance in Security, travelling comfort and wear resistance of asbestos-free of the present invention, meets the requirement of client's friction material.

2) most important to the combination property of selection to product of various reinforcing fiber and solid lubricant in without asbestos formula Design; select many kinds of solids oiling agent with the use of forming layer protecting film at friction surface; can play protection antithesis, braking steadily reduces the effects such as abnormal sound.

3) in non-asbestos material, select a small amount of Steel Fibre not only to have humidification, also play conductive force, improve the working condition of rubbing surface.

Embodiment

The technological means realized to make the present invention, creation characteristic, reaching object and effect is easy to understand, below in conjunction with specific embodiment, setting forth the present invention further.

Embodiment 1

A kind of asbestos-free micro-metal brake pad, is made up of the component of following mass percent:

Steel Fibre 20%

Reinforcing fiber 13%

Resin 10%

Cashew nut oil 30%

Filler 20%

Nitrile rubber powder 5%

Aramid fiber 2%.

A kind of asbestos-free micro-metal brake pad, comprises following process step:

1) prepare burden, batch mixing: weigh by above-mentioned recipe requirements, and to send in plough type batch mixer batch mixing 20 minutes;

2) steel backing prepares: first with special cleaning machine cleaning steel backing surface blot, then carry out ball blast with Shot-blasting Machine and make steel backing reach the roughness of expection, finally carry out glue spraying process;

3) hot-forming: to be 150-160 DEG C by above-mentioned ready batching and steel backing hot pressing die in temperature, pressure is 35MPa, the time is hot-forming under the condition of 10min, exit 3-6 time in the 1-3min that hot pressing starts, then carry out pressurize, the required dwell time is determined according to 0.5min/mm according to the thickness of goods;

4) heat treatment: by above-mentioned hot-forming after goods put into temperature control drying oven, heat-treat condition: 140 DEG C two hours, 160 DEG C two hours, 180 DEG C two hours, with stove cooling after through plain grinding, chamfering, fluting, electrostatic spraying, mark, riveted joint, installation accessories, the obtained finished product of packaging;

5. check, warehouse-in.

Embodiment 2

A kind of asbestos-free micro-metal brake pad, is made up of the component of following mass percent:

Steel Fibre 20%

Glass fibre 15%

Resin 10%

Graphite 25%

Filler 23%

Nitrile rubber powder 5%

Aramid fiber 2%.

A kind of asbestos-free micro-metal brake pad, comprises following process step:

1) prepare burden, batch mixing: weigh by above-mentioned recipe requirements, and to send in plough type batch mixer batch mixing 20 minutes;

2) steel backing prepares: first with special cleaning machine cleaning steel backing surface blot, then carry out ball blast with Shot-blasting Machine and make steel backing reach the roughness of expection, finally carry out glue spraying process;

3) hot-forming: to be 150-160 DEG C by above-mentioned ready batching and steel backing hot pressing die in temperature, pressure is 35MPa, the time is hot-forming under the condition of 10min, exit 3-6 time in the 1-3min that hot pressing starts, then carry out pressurize, the required dwell time is determined according to 0.5min/mm according to the thickness of goods;

4) heat treatment: by above-mentioned hot-forming after goods put into temperature control drying oven, heat-treat condition: 140 DEG C two hours, 160 DEG C two hours, 180 DEG C two hours, with stove cooling after through plain grinding, chamfering, fluting, electrostatic spraying, mark, riveted joint, installation accessories, the obtained finished product of packaging;

5. check, warehouse-in.

More than show and describe basic principle of the present invention and major character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and specification just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.

Claims (3)

1. an asbestos-free micro-metal brake pad, is characterized in that: be made up of the component of following mass percent:

Steel Fibre 20%

Reinforcing fiber 10%-20%

Resin 8%-12%

Frictional property regulator 15%-30%

Filler 20%-40%

Nitrile rubber powder 3%-10%

Aramid fiber 2%.

2. asbestos-free micro-metal brake pad according to claim 1, is characterized in that: described frictional property regulator is one or more in sulphide, graphite or cashew nut oil.

3. prepare a technique for asbestos-free micro-metal brake pad described in claim 1, it is characterized in that: comprise following process step,

1) prepare burden, batch mixing: weigh by above-mentioned recipe requirements, and to send in plough type batch mixer batch mixing 20 minutes;

2) steel backing prepares: first with special cleaning machine cleaning steel backing surface blot, then carry out ball blast with Shot-blasting Machine and make steel backing reach the roughness of expection, finally carry out glue spraying process;

3) hot-forming: to be 150-160 DEG C by above-mentioned ready batching and steel backing hot pressing die in temperature, pressure is 35MPa, the time is hot-forming under the condition of 10min, exit 3-6 time in the 1-3min that hot pressing starts, then carry out pressurize, the required dwell time is determined according to 0.5min/mm according to the thickness of goods;

4) heat treatment: by above-mentioned hot-forming after goods put into temperature control drying oven, heat-treat condition: 140 DEG C two hours, 160 DEG C two hours, 180 DEG C two hours, with stove cooling after through plain grinding, chamfering, fluting, electrostatic spraying, mark, riveted joint, installation accessories, the obtained finished product of packaging;

5) check, warehouse-in.