KR20010091694A - Aluminum powder and alloy powder break lining and manufacturing method thereof - Google Patents

Abstract

PURPOSE: A brake lining by using aluminum and alloy powder is provided to brake efficiently by using aluminum without asbestos, to lengthen a life span by reducing wear, and to prevent dust from being generated in braking. CONSTITUTION: Aluminum powder having the particle size of 5-100 mesh and 90wt%, 5-100 mesh in the particle size and 6-7wt% of metal powder, and 3-4wt% of a binder are mixed evenly. The mixture is injected into a mold, and sintered in vacuum for 6 hours at 350 to 450 deg.C and at 760 to 760 -2 mmAQ. The manufactured brake lining is cut in the specific size, and stuck to a pad or a drum by the binder. The frictional property and the braking force are improved with making the brake lining of aluminum and alloy powder instead of asbestos. The abrasion resistance is increased, and the damage from frictional heat is eliminated in braking without absorbing water. The braking distance is reduced with keeping the coefficient of friction to be more than 9. The accident is prevented with restricting sliding in the rain, and the expenses are reduced with recycling the brake lining.

Description

Brake lining using aluminum powder and alloy powder and its manufacturing method {Aluminum powder and alloy powder break lining and manufacturing method

The present invention relates to a brake lining using aluminum powder and alloy powder, and more particularly, to a brake lining excellent in braking performance and a method of manufacturing the same, using an alloy powder and a binder (adhesive material) mainly composed of aluminum powder. will be.

Brake lining is indispensably used in automobiles, ships, heavy equipment, brakes attached to various industrial machines, electric vehicle brakes, trains and passenger cars, truck brakes, and other devices requiring braking.

Therefore, the brake role in speed control also plays a large role in the transportation engines of any of the above described automobiles and railway vehicles. Especially in the case of a high speed vehicle, it is more important, and it is necessary to be able to decelerate stop under certain conditions.

Conventional brake linings include asbestos brake linings mainly used for maintaining the strength of friction materials or adjusting the coefficient of friction. In other words, asbestos powder and some copper powder are mixed with a binder, and then heated and molded. Asbestos brake linings have been used. In this case, asbestos dust, which is known to be a fatal carcinogen, is generated, and the braking performance is reduced due to the irritating odor. Accidents occurred frequently.

In addition, due to the low thermal conductivity of asbestos, the lubrication component is decomposed. At this time, the decomposition component forms a gas layer to interfere with the contact between the lining and the drum, and as a result, the smooth self-lubrication action is lost. The friction coefficient is reduced by weakening the properties of the brake, and eventually, the braking performance is lowered and the lining wear is increased.

In addition, when there is moisture, the braking material, that is, the asbestos brake lining, absorbs moisture and water to show a coating shape on the braking plate or the brake lining surface. At this time, the friction coefficient per plane area fell from 7 to 2 to 3, and there was a problem in that the braking was performed frequently to remove moisture with frictional heat. In addition, when asbestos, which is toxic to the human body, is absorbed into the lungs, it can shorten the life cycle of environmental hormones and humans in lung cancer, lung tumors, and other parts of the body, and contaminate the environment due to many dusts (average of 200 TON dusts nationwide). There was a problem.

In case of rain, snow, mud, or other water, the braking device and its parts are mixed with water or oil or other foreign substances.

The present invention has been made in order to solve the conventional problems as described above, the object of the present invention is composed of aluminum as a main component without using asbestos, braking performance can be greatly improved by increasing the coefficient of friction per unit area, It is an object of the present invention to provide a brake lining and a method of manufacturing the same, which can be used to prolong the life of the disk surface.

Another object of the present invention is to provide a brake lining and a method of manufacturing the same, which can prolong the service life by raising the melting point temperature due to frictional heat of the brake lining and prevent dust from occurring during braking.

Still another object of the present invention is to provide a brake lining and a method of manufacturing the same, which prevents the occurrence of asbestos dust, which is harmful to a human body, so that there are no industrial accidents and pollution factors.

In order to achieve the above object, the brake lining of the present invention contains 90 weight of aluminum powder having a particle size of 5 to 100 mesh mesh, and 6 to 7 weight of metal powder having a particle size of 5 to 100 mesh. And 3 to 4 weights of binder are contained.

In addition, the manufacturing method of the brake lining using the aluminum powder and alloy powder of the present invention for achieving the above object is 90 weight aluminum powder having a particle size of 5 to 100 mesh; 6 to 7 weight metal powder having a particle size of 5 to 100 mesh; After mixing the above components containing 3 to 4 weight of binder uniformly, the mixture was introduced into the mold and vacuum and sintering was formed at a temperature of 350 to 450 ° C. and a pressure of 760 to 760 ^-2 mmAQ (water column). It is characterized by being made.

1 (A) and (B) is a brake lining of the present invention,

(A) is a front view,

(B) is the right side view,

2 (A) and (B) is another embodiment of the brake lining of the present invention,

(A) is a front view,

(B) is the right side view,

3 (A) and (B) is another embodiment of the brake lining of the present invention,

(A) is a front view,

(B) is the right side view,

4 (A) and (B) is another embodiment of the brake lining of the present invention,

(A) is a front view,

(B) is the right side view,

5 (A) and (B) is another embodiment of the brake lining of the present invention,

(A) is a front view,

(B) is a right side view.

※ Explanation of code for main part of drawing

1: brake lining 2: pad

3: drum

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

Aluminum used in the present invention is a silvery white, light, soft, malleable, ductile, and corrosion-resistant metal, the third most common on earth after oxygen and silicon (8) and has been familiar with humans hundreds of years ago Some medicines made from powder have been on the market for some time.

Aluminum is environmentally friendly without human health even if human breathing or eating, and waste aluminum is almost recycled. Therefore, the present invention does not use asbestos, which produces the most dust in the atmosphere (mechanical braking), and without the pollution, the invention of the brake lining is made with the aluminum powder having the above characteristics as a main component Aluminum powder products are made of acicular powder, flake powder, and spherical powder by different pulverizers, mixed with some metal alloy powder, mixed with binder, put into mold, and vacuum and sintered. The brake lining 1 of the invention is manufactured and the sintered brake lining 1 is cut to a predetermined size and bonded to a pad 2 or a drum 3 by a binder to be used. If the process is changed only with vacuum sintering furnace and binder mixer and finishing machine, there is no defect in production. do.

First, the brake lining 1 according to the present invention will be described in more detail as follows.

In the brake lining comprising a metal powder and a binder, 90 weights of aluminum powders having a particle size of 5 to 100 mesh are contained, and 6 to 7 weights of metal powders having a particle size of 5 to 100 mesh are contained. A binder containing 3 to 4 weights, wherein the aluminum powder, the metal powder, and the binder are 40 weights of acicular powder and 30 weights of flat powder; Aluminum powder containing 20 weight of spherical powder; A metal powder containing 3 weights of copper, 2 weights of ferrite, 1 weight of magnesium (Mg), and 1 weight of nickel (Ni); 1 weight of carbon (C), 1 weight of a mixture of polyethylene PE) and ABS, and 1 weight of flux are contained.

As another embodiment of the brake lining 1 of the present invention,

The aluminum powder, the metal powder, and the binder include aluminum powder containing 20 weights of acicular powder, 30 weight of flake powder, and 40 weight of spherical powder; A metal powder containing 1 weight of chromium (Cr), 1 weight of manganese (Mn), 2 weights of silicon (Si), 2 weights of zinc (Zn), and 0.5 weight of cobalt (Co); It contains 1 weight of polypropylene (PP), 1 weight of flux and 1.5 weight of adhesive.

As another embodiment of the brake lining 1 of the present invention,

The aluminum powder, the metal powder and the binder are aluminum powder containing 50 weights of acicular powder, 20 weights of flat powder, and 20 weights of spherical powder; A metal powder containing 2 weights of ferric oxide (Fe ₂ O ₃ ), 2 weights of magnesium (Mg), and 2 weights of silicon (Si); 2 weights of polypropylene (PP) and 2 weights of flux are contained.

Table 1 shows the components and the content ratio of the brake lining (1) of the present invention as described in the following Tables 1, 2, 3.

Unit: weight number Ingredient Name Specification Applications Remarks Aluminum powder Metal powder bookbinder Operating condition One Needle powder 40 Copper 3 Ferrite 2 Magnesium 1 Nickel 1 Carbon 1 polyethylene + ABS 1 flux 1 Large model friction coefficient is large Melting point 450。C 2 Flat powder 30 3 Spherical powder 20 90 7 3

Unit: weight number Ingredient Name Specification Applications Remarks Aluminum powder Metal powder bookbinder Operating condition One Needle-shaped powder 20 Chrome 1 Manganese 1 Silicon 2 Zinc 2 Cobalt 5 Polypropylene 1 Flux 1 Adhesive 1.5 Medium-sized car friction coefficient of medium-sized car Medium melting point 400。C 2 Flat powder 30 3 Globular powder 40 90 6.5 3.5

Unit: weight number Ingredient Name Specification Applications Remarks Aluminum powder Metal powder bookbinder Operating condition One Needle-shaped powder 50 Ferric oxide 2 magnesium 2 silicon 2 Polypropylene 2 Flux 2 It requires extra large model power when braking High friction coefficient High press pressure Melting point 500。C 2 Flat powder 20 3 Spherical powder 20 90 6 4

In the present invention, under the same conditions as the constituents and the content ratios of the metal powder and the binder in the above embodiments, only the components and content ratios constituting the aluminum powder may be different, and the flake powder 50 weight and the spherical powder 40 A weight-containing aluminum powder 90 may be used for each of the above embodiments, and alone aluminum of acicular powder 90 or aluminum of spheroid powder 90 or aluminum of spherical powder 90 for each embodiment described above. Of course, it can be used.

Next, the manufacturing method of the brake lining 1 according to the present invention will be described in more detail.

In Table 1, Table 2, Table 3, or Tables 1, 2, and 3, the same components as in the case where only the components and the content ratio constituting the aluminum powder are different from each other, the basis of each composition ratio, and then uniform After the mixing, the mixture was introduced into the mold and vacuum-sintered and molded for 6 hours at a temperature of 350 to 450 ° C. and a pressure of 760 to 760 ^-2 mmAQ (water column) to manufacture the brake lining 1 of the present invention. The brake lining is cut to a predetermined standard and used to bond the surface of the pad 2 or the drum 3 with a binder.

The brake lining (1) of the present invention prepared as described above has superior friction characteristics by the characteristics and content ratios of each component as compared to the conventional asbestos lining, so that the effect of braking effect is about three times higher and the wear resistance rate is increased. In terms of cotton, it is increased by about 2-3 times.

In addition, moisture is not absorbed from the surface of the lining of the brake lining (1) even in the case of moisture, rainy weather or muddy road, and there is no damage due to frictional heat during braking (melting temperature is 670 ° C and asbestos burning temperature is between 250 ~ 300 ° C). When the asbestos brake lining than conventional braking distance is not changed. In addition, under the same braking distance condition, the friction coefficient is maintained at 9 or more, so the braking distance is about 1/2 shorter than the conventional asbestos brake lining, and there is no sliding of the collision unless the driver is at fault. (1) Since the product is almost recycled, the material can be saved.

Such brake linings (1) can be used as braking devices in various industrial fields, particularly automobiles (small, medium, large), ships (small, medium, clutch type), heavy equipment (trailers, fork lanes, bulldozers), various industries. Braking devices (motorcycles, race cars, industrial machine tools), train brakes (trains, trains), trains, passenger cars and vans (diesel locomotives, freight cars, military, tanks), etc. It is used in devices that require braking (carrying cranes, trunk cranes, tower cranes, hoists, etc.).

Hereinafter, the present invention will be described based on examples.

Example 1

According to the composition of Table 1, the components were mixed and uniformly mixed in a blender, and the mixture was introduced into the mold to obtain a final product by vacuum and sinter molding for 6 hours at a temperature of 400 ° C and a pressure of 760 ^-2 mmAQ. .

Test result physical properties of the obtained product is shown in Table 4.

number briefs Existing Products Product of the invention One Coefficient of friction 2 7 2 Braking distance 10m / 120Km / when driving 4 ~ 5m / 120Km / when driving 3 Surface area Unit area (equal) Unit area (equal) 4 Water absorption relationship A film is formed and absorbs moisture No film formation and no moisture absorption 5 material Asbestos and non-asbestos (slight metal powder) 90 weight aluminum composition and some alloy powder 6 Heat generation Latent heat Low latent heat and fast food 7 Furtherance Polypropylene, ABS, Asbestos, Copper, Zinc, New Share Powder 90 weight aluminum 6061, 6063 and some metal powder

As described above, according to the present invention, aluminum and waste aluminum are pulverized to form aluminum powder having a particle size of 5 to 100 mesh, and the aluminum powder, various metal powders and binders are mixed, vacuum and sintered to form a brake lining. Because of this manufacturing, the braking distance of the vehicle is shortened, which can reduce the automobile braking accident (about 28 deaths per day), and helps the driver's safe driving, and prevents the use of asbestos, which causes pollution. As it improves the environment, it is harmless to the human body, and it is possible to achieve cost savings because it does not need to replace the brake pads frequently, and it is possible to recycle resources by using waste aluminum.

Claims (16)

In the brake lining consisting of a metal powder and a binder, 90 weights of aluminum powders having a particle size of 5 to 100 mesh are contained, and 6 to 7 weights of metal powders having a particle size of 5 to 100 mesh are contained. Brake lining characterized by containing 4 weights. The aluminum powder according to claim 1, further comprising: 40 weights of acicular powder, 30 weights of flaky powder, and 20 weights of spherical powder; A metal powder containing 3 weights of copper, 2 weights of ferrite, 1 weight of magnesium, and 1 weight of nickel; Brake lining characterized in that it is mixed with a binder containing 1 weight of carbon, 1 weight of a mixture of polyethylene and ABS, and 1 weight of flux. The aluminum powder according to claim 1, further comprising: 20 weights of acicular powder, 30 weights of flaky powder, and 40 weights of spherical powder; A metal powder containing 1 weight of chromium, 1 weight of manganese, 2 weight of silicon, 2 weight of zinc, and 0.5 weight of cobalt; Brake lining, characterized in that it is mixed with a binder containing 1 weight of polypropylene flux and 1 weight of adhesive. The aluminum powder according to claim 1, further comprising: 50 weights of acicular powder, 20 weights of flaky powder, and 20 weights of spherical powder; A metal powder containing 2 weights of ferric oxides (Fe ₂ O ₃ ), 2 weights of magnesium, and 2 weights of silicon; Brake lining, characterized in that it is mixed with a binder containing 2 weights of polypropylene and 2 weights of flux. The brake lining according to claim 2, 3 or 4, wherein the aluminum powder is composed of 50 weights of flat powders and 40 weights of spherical powders. 5. The brake lining according to claim 2, 3 or 4, wherein the aluminum powder is made of 90 weight of acicular powder. The brake lining according to claim 2, 3 or 4, wherein the aluminum powder is made of 90 weights of flat powder. The brake lining according to claim 2, 3 or 4, wherein the aluminum powder is made up of 90 spherical powder. In preparing a brake lining consisting of a metal powder and a binder, 90 weight aluminum powder having a particle size of 5 to 100 mesh; 6 to 7 weight metal powder having a particle size of 5 to 100 mesh; After mixing the above components containing 3 to 4 weight of binder uniformly, the mixture is put into the mold and manufactured by vacuum and sinter molding at a temperature of 350 to 450 ° C and a pressure of 760 to 760 ^-2 mmAQ. Method for producing a brake lining characterized in that. The aluminum powder containing 40 weights of acicular powder, 30 weights of flaky powder, and 20 weights of spherical powder is used, and it contains 3 weights of copper, 2 weights of ferrite, 1 weight of magnesium, and 1 weight of nickel. A method of producing a brake lining comprising using a metal powder, a binder containing 1 weight of carbon, 1 weight of a mixture of polyethylene and ABS, and 1 weight of flux. The aluminum powder according to claim 9, which contains 20 weights of acicular powder, 30 weights of flat powder, and 40 weights of spherical powder; Metal powder containing 1 weight of chromium, 1 weight of manganese, 2 weight of silicon, 2 weight of zinc, and 0.5 weight of cobalt; A method for producing a brake lining comprising using a binder containing 1 weight of polypropylene, 1 weight of flux, and 1.5 weight of adhesive. The aluminum powder according to claim 9, wherein 50 weights of acicular powder, 20 weights of flaky powder, and 20 weights of spherical powder are used; Metal powder containing 2 weights of ferric oxide (Fe ₂ O ₃ ), 2 weights of magnesium, and 2 weights of silicon; A process for producing brake linings comprising using a binder containing 2 weights of polypropylene and 2 weights of flux. The method for producing a brake lining according to claim 10, 11 or 12, wherein the aluminum powder is composed of 50 weights of flat powder and 40 weights of spherical powder. The method for producing a brake lining according to claim 10, 11 or 12, wherein the aluminum powder is made of 90 weight of acicular powder. 13. The method for producing a brake lining according to claim 10, 11 or 12, wherein the aluminum powder is composed of 90 weights of flaky powders. The brake lining manufacturing method according to claim 10, 11 or 12, wherein the aluminum powder is made up of 90 weight of spherical powder.