Processing technology for powder metallurgy gear hub

A processing technology, powder metallurgy technology, applied in the processing field of the inner gear hub of the automobile gearbox, to achieve the effect of improving efficiency, reasonable process and reducing energy consumption

Inactive Publication Date: 2013-07-03
兴城市粉末冶金有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Method used

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Examples

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Example Embodiment

[0016] 1. Press forming: add the configured gear hub metal powder into the mold cavity of the hydraulic press, press and shape it to make the gear hub blank, which is demolded to become the gear hub blank.

[0017] 2. Pre-sintering: Put the gear hub blank into a continuous mesh belt furnace, and continuously sinter at a temperature of 8500°C, and take it out of the continuous mesh belt furnace to become a pre-sintered gear hub.

[0018] 3. Numerical control processing: Fix the pre-sintered gear hub on the CNC machine tool and process it according to the geometric size and shape of the gear hub to become a machined gear hub.

[0019] 4. Sintering: add the processed gear hub to the sintering kiln for shaping and sintering to form a shaped sintered gear hub.

[0020] 5. Shaping: Shaping the shaped sintered gear hub, trimming burrs and acute angles, so that it meets the technical requirements of the outer size and shape of the gear hub, and forming a shaping gear hub.

[0021] 6. High-frequ...

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Abstract

The invention provides a processing technology for a powder metallurgy gear hub. A product gear hub is formed through the processes of metal powder press-forming, pre-sintering, numerical control machining, sintering, reshaping, high-frequency quenching, cleaning and packaging. The technical process of an automobile synchronizer gear hub processed by the processing technology is reasonable, the gear hub is convenient to process, the efficiency can be improved, the energy consumption is decreased, and the cost is reduced. The processing technology is suitable for being used for processing the automobile synchronizer gear hub.

Description

technical field [0001] The invention proposes a processing method for an inner gear hub of an automobile gearbox, specifically a powder metallurgy gear hub processing technology. technical background [0002] Synchronizer hubs are important components within automotive transmissions. Its overall precision and performance directly determine the safety and stability of the gearbox. It is a complex structural part with high density, high strength and high precision. [0003] At present, the domestic powder metallurgy synchronizer gear hub requires high precision, and after pressing and sintering with a powder metallurgy press, it cannot directly meet the drawings and technical requirements, and subsequent processing is required. The powder metallurgy synchronizer gear hub is made of high-strength powder, especially the D39 material used for high-end car gear hubs. After sintering, the surface hardness reaches HV5300 or more. Subsequent finishing and CNC machining are very dif...

Claims

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Application Information

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IPC IPC(8): B22F3/16B22F5/08
Inventor 孙立臣
Owner 兴城市粉末冶金有限公司
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