Preparation method of powder metallurgy material spider hub of clutch driven disk
A technology of powder metallurgy and clutch, which is applied in the field of preparation of the center hub of the clutch driven disc, can solve the problems affecting the overall performance of the clutch, difficult mass production, cumbersome manufacturing process, etc., and achieves good product consistency, easy mass production, and overall good performance
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Embodiment 1
[0017] The powder metallurgy central disc hub of the clutch driven disc prepared by the present invention is composed of a faceplate 1 and a central hub 2, the separation openings 4 arranged equidistantly on the periphery of the faceplate 1, and buffer springs arranged equidistantly on the faceplate 1 Mounting groove 5, the central part of center hub 2 is inner hole spline 6, and faceplate 1 is integrated with center hub 2, and its separation port 4, buffer spring installation groove 5, inner hole spline 6 are all formed at one time. The preparation method of the powder metallurgy center hub of the clutch driven disc comprises the following steps:
[0018] (1), after weighing each raw material according to the weight ratio of 100 parts of reduced iron powder, 0.6 part of graphite powder, 5 parts of copper powder, and 0.6 part of alloy powder, wherein the reduced iron powder is a high-quality first-class reduced iron powder, and then Add 0.5 parts of zinc stearate and 0.07 part...
Embodiment 2
[0024] Its structure is with embodiment 1.
[0025] Its production steps are:
[0026] (1) After weighing each raw material according to the weight ratio of 100 parts of reduced iron powder, 0.5 part of graphite powder, 6 parts of copper powder and 0.5 part of alloy powder, add 0.4 part of zinc stearate and 0.08 part of machine oil, and use The initial mixing is performed manually, and then layered into the material barrel, and the powder is mixed with a double-cone mixer for 80 minutes;
[0027] (2) Load into the mold and form by multi-stage floating pressing;
[0028] (3) Sintering at 1100°C: Shaping and heat treatment are the same as in Example 1. After three batches of production, 10 pieces were randomly inspected in each batch. After testing, the main performance indicators are: the maximum torque Temax≥73 (N.m), an average increase of 4 (N.m) compared with the existing central hub, and the inner hole spline hardness of the central hub is HRC35. -40, an average increas...
Embodiment 3
[0030] Its structure is with embodiment 1. Its production steps are with embodiment 1. However, the ratio of its various raw material components is: 100 parts of reduced iron powder, 0.9 part of graphite powder, 4 parts of copper powder, and 0.8 part of alloy powder; when mixing materials, add 0.6 part of zinc stearate and 0.06 part of engine oil; After layering into the barrel, use a double-cone mixer to mix the powder for 100 minutes; during sintering, the temperature is controlled at 1160°C. After three batches of production, 10 pieces were randomly inspected in each batch. After testing, its main performance indicators are: the maximum torque Temax≥72 (N.m), which is 3 (N.m) higher than the existing center hub on average. After heat treatment, the center hub The hardness of the hole spline part is HRC32-38, which is 2 times higher than the existing center hub on average.
[0031] Through the production method of the invention, not only the central disc hub suitable for 4...
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Abstract
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