High-metal automobile friction plate and preparation method thereof
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A friction plate and high-metal technology, applied in the direction of friction linings, mechanical equipment, etc., can solve the problems of affecting the safety of military vehicles, weak function of military vehicles, and failure to work normally, so as to improve high metal properties and structural strength, The effect of stabilizing the friction coefficient and reducing the incidence of brake noise
Inactive Publication Date: 2018-08-14
CENT SOUTH UNIV +1
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The friction lining with too high metal content has many disadvantages, such as rusting in a humid environment, causing the brake to lock up and cannot work normally; the corrosion is serious in a saline-alkaline environment and cannot be used; the friction lining is too dense and dense, and it is easy to Brake squealing in low temperature environment affects the safety of military vehicles
[0003] In the prior art, although lime or zinc powder is used for antirust in the existing methods, it only has an antirust improvement effect on the brake pads of family cars used in urban road conditions, and has an effect on military vehicles that are often in field operations or special working conditions. weak
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Embodiment 8
[0052] The raw materials of the high-metal automobile friction plate include the following components calculated by weight percentage: FeCoCrNi high-entropy alloy powder 10%, carbon nanotube Ni 3 Al powder 10%, sponge iron powder 12%, steel fiber 10%, copper fiber 8%, mineral fiber 10%, artificial graphite 10%, cellulose fiber 4%, resin 7%, rubber 3%, calcium carbonate 16%. After testing, the noise occurrence rate is 7.0%,
Embodiment 9
[0054] The raw materials of the high-metal automobile friction plate include the following components calculated by weight percentage: FeCoCrNi high-entropy alloy powder 10%, carbon nanotube Ni 3 Al powder 5%, sponge iron powder 12%, steel fiber 10%, copper fiber 10%, mineral fiber 10%, artificial graphite 10%, cellulose fiber 4%, resin 7%, rubber 3%, calcium carbonate 18%. After testing, the noise occurrence rate is 5.2%.
Embodiment 10
[0056] The raw materials of the high-metal automobile friction plate include the following components calculated by weight percentage: FeCoCrNi high-entropy alloy powder 10%, carbon nanotube Ni 3 Al powder 15%, sponge iron powder 10%, steel fiber 7%, copper fiber 8%, mineral fiber 10%, artificial graphite 10%, cellulose fiber 4%, resin 7%, rubber 3%, calcium carbonate 16%. After testing, the noise occurrence rate is 3.6%.
[0057] Ni containing carbon nanotubes 3 The preparation method of Al powder is as follows, in a tube furnace, at a catalytic temperature of 450°C-650°C, add methanol vapor at a rate of 1L / min to the carrier gas N at a rate of 2-8L / min. 2 In air, through porous Ni 3 In the pores of the Al alloy catalyst, methanol is catalyzed and decomposed in the pores and surfaces of the catalyst to obtain a mixture of carbon nanotube powder and catalyst powder. The catalytic time was adjusted, and in the mixtures prepared in Examples 8-10, the content of carbon nanotub...
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Abstract
The invention belongs to the technical field of automobile friction plates and in particular relates to a high-metal automobile friction plate and a preparation method thereof. Raw materials of the high-metal automobile friction plate comprise the following components in percentage by weight: 5 to 20 percent of FeCoCrNi high-entropy alloy powder, 5 to 15 percent of sponge iron powder, 7 to 30 percent of metal fibers, 7 to 21 percent of non-metal fibers, 5 to 15 percent of artificial graphite, 5 to 8 percent of resin, 2 to 5 percent of rubber and the balance of calcium carbonate. Three components, which participate in alloying, of the FeCoCrNi high-entropy alloy powder have rust-proof and corrosion-proof effects; alloyed materials have a remarkable rust-proof effect, and an FeCoCrNi high-entropy alloy has very high tensile strength and good ductility; the friction coefficient of a friction material is easy to improve and the wear resistance of the friction material can be improved through the good ductility. The FeCoCrNi high-entropy alloy powder with an irregular shape is added, so that the friction plate has excellent weather resistance and corrosion resistance; meanwhile, the high metallicity and structural strength of the material are improved, so that the high and stable friction coefficient is obtained.
Description
technical field [0001] The invention belongs to the technical field of vehicle friction plates, and in particular relates to a high-metal automobile friction plate and a preparation method thereof. Background technique [0002] Military vehicles have a heavy body and a heavy load. They are used in various climatic conditions such as severe cold and hot summer, and are used in various harsh natural environments such as sandy land, swamps, and rainforests. The requirements for braking materials are much higher than ordinary vehicles. The friction material used for braking is required to have a high coefficient of friction, so that it can brake quickly and efficiently in harsh environments. With the current research and development and preparation technology of the friction plate, in order to obtain a high and stable friction coefficient, it is necessary to use high-strength metal components, such as steel or copper fibers and powders, while ensuring the structural strength and...
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