Powder metallurgy aviation brake material for large-scale airplane and producing method thereof
A brake material and powder metallurgy technology, applied in the field of new copper-based powder metallurgy aviation brake materials, can solve the problems of insufficient braking force, short service life, poor reliability, etc., and achieve the effect of full response and long service life
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Embodiment 1
[0028] Embodiment 1: Boeing 737-700 aircraft domestic brake pair
[0029] Brake material components are: 13% iron, 12% graphite, 6% sea sand, 1% tin, 2% nickel, 4% silicon carbide, 4% alumina, 4% molybdenum disulfide, 54% copper.
[0030] The manufacturing process is as follows:
[0031] Each component is mixed evenly according to the proportion, then mixed with aviation kerosene and mixed evenly with a V-shaped mixer; the mixture is formed into a powder compact with a pressing pressure of 500MPa; the steel plate is processed into a steel bowl with a thickness of 1.5mm No. 45, plated with matte nickel, The thickness of the coating is 10-20 μm; the pressing and sintering process of the compact is as follows: heating up for 2 hours, pressurizing 1.0 MPa in the initial stage of heating up, and pressing 1.5 MPa after 700 ° C. The heat preservation temperature is 980°C, the heat preservation pressure is 2.0MPa, and the heat preservation is 3 hours, with hydrogen protection.
[00...
Embodiment 2
[0034] Embodiment 2: Boeing 737-800 aircraft domestic brake pair
[0035] Brake material components are: 15% iron, 10% graphite, 9% sea sand, 1% tin, 1% nickel, 2% silicon carbide, 2% alumina, 4% molybdenum disulfide, 57% copper.
[0036] The manufacturing process is as follows:
[0037] The components are mixed evenly according to the ratio, then mixed with aviation kerosene and mixed evenly with a V-shaped mixer; the mixture is formed into a powder compact with a pressing pressure of 500Mpa; the steel plate is processed into a steel bowl with a thickness of 1.5mm No. 45, plated with matte nickel, The thickness of the coating is 10-20 μm; the pressing and sintering process of the compact is as follows: heating up for 3 hours, pressing 1.0 MPa in the initial stage of heating up, and pressing 2.0 MPa after 700 ° C. The heat preservation temperature is 1000°C, the heat preservation pressure is 2.5MPa, and the heat preservation is 3 hours, with hydrogen protection.
[0038] Fri...
Embodiment 3
[0040] Embodiment 3: Boeing 737-500 aircraft domestic brake pair
[0041] Brake material components are: 8% iron, 8% graphite, 4% sea sand, 1% tin, 1% nickel, 2% silicon carbide, 2% alumina, 2% molybdenum disulfide, 72% copper.
[0042] The manufacturing process is as follows:
[0043] The components are mixed evenly according to the ratio, then mixed with aviation kerosene and mixed evenly with a V-shaped mixer; the mixture is formed into a powder compact with a pressing pressure of 400MPa; the steel bowl is processed into a steel bowl with a thickness of 1.5mm No. 45 steel plate, plated with matte nickel, The thickness of the coating is 10-20 μm; the pressurized sintering process of the compact is as follows: heating up for 3 hours, pressurizing at the initial stage of heating at 1.0 MPa, and then pressing at 1.5 MPa after 500°C. The heat preservation temperature is 1020°C, the heat preservation pressure is 2.0MPa, and the heat preservation is 3 hours, with hydrogen protect...
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