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A kind of high friction coefficient corrosion-resistant copper-based brake material and preparation method thereof

A technology of high friction coefficient and brake material, which is applied in the field of high friction coefficient corrosion-resistant copper-based brake material and its preparation, can solve the problems of seawater corrosion resistance and low static friction coefficient, and achieves overcoming poor corrosion resistance and improving friction coefficient. , the effect of reducing the amount of wear

Active Publication Date: 2017-09-29
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

However, compared with iron-based brake materials, the domestic existing copper-based powder metallurgy brake materials have relatively low dynamic and static friction coefficients (dynamic and static moments) under high pressure conditions, especially low static friction coefficients, and are not resistant to seawater corrosion.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A high friction coefficient corrosion-resistant copper-based brake material, its formula contains 34% copper, 12% carbon, 6% titanium, 6% nickel, 10% quartz sand, 9% silicon carbide by weight , 6% mullite, 8% molybdenum disulfide and 9% molybdenum trioxide. Its preparation method is as follows: (1) dry the powder of compound components such as quartz sand, silicon carbide, mullite, molybdenum disulfide, and molybdenum trioxide for use; Proportionally add graphite powder, titanium powder, nickel powder, quartz sand powder, silicon carbide powder, mullite powder, molybdenum disulfide powder, molybdenum trioxide powder, etc., and mix them evenly; (3) weigh 50 grams of mixed Put the powder into the mold, and press it into the original sheet-shaped green body by cold pressing, and the molding pressure is 350MPa; (4) Put the cold-pressed green sheet into the sintering furnace and heat it under the protective atmosphere of argon. Bottom sintering, the sintering temperature is...

Embodiment 2

[0028] A high friction coefficient corrosion-resistant copper-based brake material, its formula contains 79% copper, 6% carbon, 2% titanium, 2% nickel, 4% quartz sand, 3% silicon carbide by weight , 2% mullite and 2% molybdenum trioxide. Its preparation method is as follows: (1) dry the powders of compound components such as quartz sand, silicon carbide, mullite, molybdenum trioxide, etc.; , titanium powder, nickel powder, quartz sand powder, silicon carbide powder, mullite powder, molybdenum trioxide powder, etc., and mix it uniformly; (3) take 50 grams of uniformly mixed powder and put it into the mold, and The original sheet-shaped green body is pressed by cold pressing, and the forming pressure is 450MPa; (4) The cold-pressed green disc is put into a sintering furnace and sintered under an argon protective atmosphere, and the sintering temperature is 800°C. The sintering time is 100 minutes; during the sintering process, when the temperature of the green body rises to 40-...

Embodiment 3

[0031] A high friction coefficient corrosion-resistant copper-based brake material, its formula contains 60% copper, 8% carbon, 4% titanium, 3% nickel, 2% tin, 6% quartz sand, 5% silicon carbide, 4% mullite, 3% molybdenum disulfide and 5% molybdenum trioxide. Its preparation method is as follows: (1) dry the powder of compound components such as quartz sand, silicon carbide, mullite, molybdenum disulfide, and molybdenum trioxide for use; Add graphite powder, titanium powder, nickel powder, tin powder, quartz sand powder, silicon carbide powder, mullite powder, molybdenum disulfide powder, molybdenum trioxide powder, etc., and mix them evenly; (3) weigh 50 grams Put the uniformly mixed powder into the mold, and press it into the original sheet-shaped green body by cold pressing, and the molding pressure is 380MPa; (4) put the cold-pressed green sheet into the sintering furnace and Sintering under air protection atmosphere, the sintering temperature is 830℃, and the sintering t...

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Abstract

The invention discloses an anti-corrosion copper-based brake material with a high friction coefficient. The anti-corrosion copper-based brake material is prepared from the following raw materials in percentage by weight: 34%-79% of copper, 6%-12% of carbon, 2%-6% of titanium, 2%-6% of nickel, 4%-10% of quartz sand, 3%-9% of silicon carbide, 2%-6% of mullite, 0-8% of molybdenum disulfide and 2%-9% of molybdenum trioxide, wherein the materials can be pressurized, sintered and molded in a protective atmosphere in a powder metallurgy manner; the sintering temperature is 800-890 DEG C; the sintering time is 100-200 minutes; and the exerted pressure is 1.9-3MPa. A Cu-Ni-Ti alloy component is adopted as a connecting phase, so that the problem that a common copper-based powder metallurgy brake material is poor in decay resistance in a marine environment is overcome; and the mullite is adopted as a friction phase, so that the problem that a common copper-based brake material is low in dynamic and static friction coefficient is solved.

Description

technical field [0001] The invention relates to the field of copper-based brake materials, in particular to a high friction coefficient corrosion-resistant copper-based brake material and a preparation method thereof. Background technique [0002] China developed and built its own naval carrier helicopters in the late 1870s. After more than 30 years of development, it has formed a variety of carrier helicopters and equipped them with certain naval and air forces. However, due to the restrictions on the export of international weapons and related technologies, and the fact that the country can only rely on independent research and development, which started late, the technological development of shipborne helicopters, especially the technological level of brake materials, lags far behind the military forces of the United States, Russia and Europe. strong country. [0003] As the key brake component of the dual brake device of the main landing gear of the helicopter, the brak...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C9/00C22C32/00
Inventor 曾治斌黄树华
Owner 贵州新安航空机械有限责任公司
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