Automotive copper-based powder metallurgy composite friction material and manfuacturing method thereof
A composite friction material and powder metallurgy technology, applied in the field of composite friction materials, can solve problems such as friction noise, scratches on automobile brake discs or drums, and achieve the effects of stable friction coefficient, good anti-wear characteristics, and wide application prospects.
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Embodiment 1
[0029] Preparation of short fine copper-based powder metallurgy friction material: basic material formula: in terms of mass percentage, the matrix material formula is 50% copper, 8% iron, 10% quartz powder, 15% aluminum oxide, and 2% molybdenum disulfide; 10% graphite powder; 5% boron nitride. The molding agent is kerosene, and the addition amount of the molding agent is 0.2% of the total weight of the base material. Mix the above materials evenly, pour them into the mold with a pressure of 400MPa, and press them into a slender rod shape with a diameter of φ2mm×200mm in length, separate each slender rod-shaped green compact, and put it into a sintering furnace. Under the conditions, the temperature rises to 1100°C, keeps the temperature for 4 hours, and cools to room temperature with the furnace.
[0030] Standing for more than 24 hours under dry conditions; then shearing, crushing, and screening with an 8-mesh sieve to obtain a copper-based powder metallurgy friction materia...
Embodiment 2
[0037] Preparation of short and fine copper-based powder metallurgy friction material: basic material formula (by mass percentage): 60% copper, 5% iron, 5% quartz powder, 10% aluminum oxide, 3% molybdenum disulfide; calcium fluoride 7%, graphite powder 10%; forming agent is kerosene, based on the total weight of the mixture, the content of the forming agent is 0.5% total weight. Mix the above materials evenly, pour them into the mold with a pressure of 400MPa, and press them into a slender rod shape with a diameter of φ2mm×200mm in length, separate each slender rod-shaped green compact, and put it into a sintering furnace. Under the conditions, the temperature rises to 900°C, keeps the temperature for 5 hours, and cools down to room temperature with the furnace.
[0038] Under dry conditions, it is placed for more than 24 hours; then it is cut, crushed, and screened with an 8-mesh sieve.
[0039] Preparation of composite friction material: material basic formula (by mass perc...
Embodiment 3
[0045] Preparation of short fine copper-based powder metallurgy friction material: basic material formula (by mass percentage): copper 65%, iron 3%, quartz stone powder 12%, aluminum oxide 5%, graphite powder 10%, calcium fluoride 5% %;
[0046]The forming agent is kerosene, based on the total weight of the mixture, and the content of the forming agent is 0.4% by weight. Mix the above materials evenly, pour them into the mold with a pressure of 400MPa, and press them into a slender rod shape with a diameter of φ3mm×300mm in length, separate each slender rod-shaped green compact, and put it into a sintering furnace. Under the conditions, the temperature rises to 1100°C, keeps warm for 2 hours, and cools down to room temperature with the furnace.
[0047] Under dry conditions, it is placed for more than 24 hours; then it is cut, crushed, and screened with an 8-mesh sieve.
[0048] Preparation of composite friction material: basic material formula (in mass percentage): cashew n...
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