Super-lubricated surface strengthening method of graphite-like carbon film for high-speed gear

Abstract

The invention relates to a super-lubricated surface strengthening method of a graphite-like carbon film for a high-speed gear. The method comprises the following steps: firstly, sequentially carrying out shot blasting, micro-jetting and fluid polishing pre-treatment on the surface of the gear to enable the surface smoothness of the gear to be less than 0.2 micron; then, by adopting an unbalanced magnetron sputtering composite target technology, introducing elements such as Y and Ta into a graphite-like carbon film preparation technology to prepare a graphite-like carbon film with ultralow friction coefficient on the surface of the gear, namely carrying out sputter cleaning on the surface of a base metal 1; and sequentially preparing a Cr transitional layer 3, a Cr/C gradient layer 4 and a graphite-like composite work layer 5 with ultralow friction coefficient on a fluid polishing surface layer 2. The method provided by the invention solves the problem that a solid lubricating film of the high-speed gear is short in service life, and the vibrating noise of the high-speed gear is effectively reduced. The vibrating noise of a transmission gear by adopting the technology is reduced by 10-15%, so that the method provides a novel technical path for reducing the vibrating noise of the gear.

Description

technical field [0001] The invention belongs to the technical field of physical vapor deposition of thin film materials and modern surface engineering technology, and relates to a method for preparing a graphite-like carbon film with an ultra-low friction coefficient by unbalanced magnetron sputtering, in particular to a high-speed gear-like graphite based on reducing transmission noise Carbon film super lubricating surface strengthening method. Background technique [0002] Gear transmission is constantly developing towards high-speed, light-weight, and heavy-duty fields. How to reduce the vibration and noise of gear transmission is an important research field of modern industrial technology. Solid lubrication on the gear surface is an important means to reduce the noise of gear transmission. Because the life of general solid lubricant film cannot meet the life requirements of high-speed gear transmission, its application research is severely restricted. [0003] In order ...

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Problems solved by technology

[0004] In order to overcome the defects of the above-mentioned prior art, the object of the present invention is to provide a method for strengthening the super-lubricating surface of the high-speed gear graphite carbon film. Balanced magnetron sputtering composite target technology prepares a graphite-like carbon film with an ultra-low friction coefficient, which is deposited on the surface of the micro-sprayed and fluid-polished gear, which solves the problem of high-speed and low service life of the solid lubricant film of the gear, and effectively reduces the high-speed, gear vibration noise

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