Multimaterial-composite self-lubricating gear
A self-lubricating, multi-material technology, applied in the direction of belts/chains/gears, components with teeth, portable lifting devices, etc., can solve problems such as unsatisfactory anti-friction effects, environmental pollution, high difficulty, etc., to achieve beneficial Reduced weight, improved transmission performance, and improved service life
Inactive Publication Date: 2018-08-07
HEFEI UNIV OF TECH
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Problems solved by technology
However, it is very difficult to meet the above performance requirements for gears made of one material
In addition, in order to reduce wear and tear in the gear transmission process, various lubricating oils and greases must be added, causing certain environmental pollution, and the friction reduction effect is not particularly ideal, and the application occasions also have certain limitations.
Method used
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[0017] combine figure 1 and figure 2 As shown, the multi-material composite self-lubricating gear is composed of a gear base 1 , a transition base 2 and a self-lubricating coating 3 . The gear base 1 can be obtained by using quenched and tempered steel, such as 45 steel, through a conventional gear hobbing method. 45 tempered steel has good comprehensive properties, while maintaining high strength, it also has good plasticity and toughness. Then, using 3D printing, a layer of high-alloy steel containing manganese and chromium is clad on the gear base 1, which is the transition base 2. The transition matrix 2 has good wear resistance, high temperature resistance and impact resistance. The surface of the transition substrate 2 obtained after 3D printing has relatively high roughness, and then a layer of self-lubricating coating 3 is coated on the transition substrate 2 by laser coating, or ion spraying, or magnetron sputtering technology , the self-lubricating coating can b...
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Abstract
The invention discloses a multimaterial-composite self-lubricating gear which comprises a gear base, a transitional base and a self-lubricating coating, wherein the gear base is made of a high-intensity high-toughness metal material, the transitional base is made of a high-alloy steel structure, and the self-lubricating coating is made of a metal-based solid self-lubricating material; a high-alloysteel layer is stacked on the surface of the gear base through the 3D printing technology, and the outermost layer is coated with the solid self-lubricating material by means of advanced technology such as laser cladding or magnetron sputtering, and thus self-lubricating function of the face of the gear is achieved. Compared with the conventional gear, the multimaterial-composite self-lubricatinggear has better lubricating property, anti-friction performance, wear resistance and impact resistance, has excellent lubricating performance and high contact bearing capacity during transmission, can meet application requirements on extreme conditions such as greaseless and lack of grease, and accordingly is adaptable to the field of gear transmission on working conditions of high speed and heavy load, high vacuum, wide range of temperature.
Description
technical field [0001] The invention relates to the field of gears, and is a multi-material composite self-lubricating gear Background technique [0002] Lubrication plays a decisive role in the normal operation and service life of the gear transmission. Lubricant plays various functions such as lubrication and cooling in gear transmission, which ensures the normal operation of the gear at a certain working temperature and prolongs the service life of the gear. At present, the lubrication methods of gears are mainly divided into grease lubrication, oil lubrication and solid lubrication. Grease lubrication is to fill the casing with grease, which is only suitable for gear pairs with a tangential speed below 4.5m / s. Lubricating oil lubrication is the most widely used form of gear lubrication, which is divided into non-pressure lubrication and pressure lubrication. Solid lubrication is coating, spraying or agitating the fine powder of solid materials with lubricating propert...
Claims
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Login to View More IPC IPC(8): F16H55/17F16H55/06
CPCF16H55/06F16H55/17
Inventor 陈奇田文锋王亚东汪金成姚志刚李浩
Owner HEFEI UNIV OF TECH