Automotive resin-based powder metallurgy potassium titanate fiber friction material and preparation method thereof
An iron-based powder metallurgy and powder metallurgy technology, applied in friction linings, mechanical equipment, gear shifting mechanisms, etc., can solve problems such as scratches on automobile brake discs or drums, friction noise, etc., and achieve good anti-wear characteristics, stable The effect of low friction coefficient and hardness
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Embodiment 1
[0030] Preparation of short and fine iron-based powder metallurgy friction material: basic material formula: in terms of mass percentage, the matrix material formula is 50% iron, 5% copper, 3% tin, 10% quartz powder, 15% aluminum oxide, disulfide Molybdenum 2%, graphite powder 15%; forming agent is kerosene, based on the total weight of the mixture, the addition of the forming agent is 0.4% total weight. Mix the above materials evenly, pour them into the mold with a pressure of 500MPa, 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 1000°C, keeps the temperature for 4 hours, and cools to room temperature with the furnace.
[0031] Under dry conditions, it is placed for more than 24 hours; then it is cut, crushed, and screened with an 8-mesh sieve.
[0032] Preparation of composite friction material: basic material...
Embodiment 2
[0038] Preparation of short and fine copper-based powder metallurgy friction material: basic material formula (by mass percentage): 60% iron, 5% copper, 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.
[0039] Under dry conditions, it is placed for more than 24 hours; then it is cut, crushed, and screened with an 8-mesh sieve.
[0040] Preparation of composite friction material: material basic formula (by mass perc...
Embodiment 3
[0046] Preparation of short and fine iron-based powder metallurgy friction material: basic material formula (by mass percentage): 70% iron, 1% tin, 14% quartz stone powder, 5% aluminum oxide, and 10% graphite powder;
[0047] 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 500MPa, and press them into a slender rod shape with a diameter of φ2mm×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.
[0048] Under dry conditions, it is placed for more than 24 hours; then it is cut, crushed, and screened with an 8-mesh sieve.
[0049] Preparation of composite friction material: basic material formula (by mass percentage): cashew oil modified phenolic...
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