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Surface treatment process of chain, gear and bearing

A surface treatment and gear technology, which is applied in the field of chain, gear and bearing surface treatment technology, can solve problems such as service life impact, and achieve the effect of consistent penetration layer and uniform penetration process.

Inactive Publication Date: 2011-05-25
缪建良
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For parts such as gears, bearings, and chains, once dust or sand enters the transmission friction surface during the transmission process, it will have an impact on its service life

Method used

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Examples

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Effect test

Embodiment Construction

[0012] The chain, gear and bearing surface treatment process described in the embodiment of the present invention comprises the following steps,

[0013] 1. Surface polishing of chains, gears or bearings,

[0014] 2. Clamp the non-friction-bearing surface of the polished part with a fixture, put it in a vacuum and then fill it with nitrogen.

[0015] 3. Heating to 900°C under -1 atmospheric pressure,

[0016] 4. Fill in methanol cracking gas to infiltrate carbon group elements, then discharge the cracking gas, refill nitrogen gas to reach 1 atmosphere, then cool down to 200°C, keep the temperature for 12 hours, then lower the temperature to room temperature naturally .

[0017] At this time, the various indicators of the parts can reach the standard of surface hardness HV 05 More than 550, the thickness of the surface penetration layer can reach 0.1mm, and the penetration concentration can reach more than 1C%.

[0018] The invention has the advantages of achieving a unifor...

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Abstract

The invention relates to a surface treatment process of a chain, a gear and a bearing. The process comprises the following steps of: polishing the surface of a chain, a gear or a bearing, firmly clamping the non-friction force surface of the polished spare part, putting in vacuum, introducing nitrogen gas, heating to 900 DEG C under -1 atmospheric pressure and introducing methanol decomposition gas for penetrating carbon group elements; and then, emitting the decomposition gas, introducing nitrogen gas again to reach 1 atmospheric pressure, then, cooling to 200 DEG C, keeping the temperature for 12 h and naturally cooling to a room temperature. The invention has the advantages of realizing a uniform penetration process, reasonably dispersing the internal structural stress in the spare part into constant penetration layers and surely preventing the spare part from being influenced by the internal stress in the operation process. In addition, the surface smoothness and the hardness of the spare part can reach higher standards, and common dust or sand can not cause surface scratches or influence friction in the transmission process.

Description

technical field [0001] The invention relates to a treatment process for the surface layers of chains, gears, bearings, etc., specifically a technical proposal for enhancing the hardness and wear resistance of the surface by penetrating carbon group elements. Background technique [0002] For chains, gears, bearings and other long-term pressure and friction parts, the requirements for wear resistance and hardness are much higher than those of ordinary working conditions, so chains, gears, bearings and other parts are generally processed by special processes. To enhance its wear resistance and hardness, the more common methods are carburizing, surface plating, and quenching treatment. For parts such as gears, bearings, and chains, once dust or sand enters its transmission friction surface during the transmission process, it will have an impact on its service life. [0003] The present invention conducts research based on actual application, provides a process method for produ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C8/20
Inventor 缪建良
Owner 缪建良
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