Gear non-load overall immersion type chemical mechanical coupling surface polishing method

A chemical-mechanical, surface-polishing technology, applied in mechanical equipment, belts/chains/gears, gear teeth, etc., to achieve the effect of convenient and simple operation, reducing scratches, improving efficiency and effect

Active Publication Date: 2022-03-29
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the shortcomings of the existing gear tooth surface processing, the present invention provides a gear immersion as a whole, which couples chemistry and machinery, fluid and solid, does not apply any external load, and is assisted by ultrasonic, which is efficient and stable. The method of polishing the surface

Method used

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  • Gear non-load overall immersion type chemical mechanical coupling surface polishing method
  • Gear non-load overall immersion type chemical mechanical coupling surface polishing method

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example

[0036] Example: Using the above method to polish the cycloidal gear of nickel-based alloy material, the surface roughness of the polished gear is significantly reduced, and the surface roughness is reduced from the initial 2-3 μm to 0.8-0.9 μm, and the surface is bright without scratches. Gears undergo the following chemical reactions in the polishing solution:

[0037] Ni+H 2 o 2 →NiO+H 2 o

[0038] Ni+H 2 o 2 →Ni(OH) 2

[0039] 2Cr+3H 2 o 2 →Cr2O 3 +3H 2 o

[0040] Mo+2H 2 o 2 →MoO 2 +2H 2 o

[0041] Mo+3H 2 o 2 →MoO 3 +3H 2 o

[0042] MoO 2 +H 2 o 2 →MoO 3 +H 2 o

[0043] NiO+2H + +5H 2 O→[Ni(H 2 O) 6 ] 2+

[0044] Ni(OH) 2 +2H + +4H 2 O→[Ni(H 2 O) 6 ] 2+

[0045] When the gear is in the polishing solution, the main components of the surface will be NiO, Ni(OH) 2 、Cr 2 o 3 、MoO 2 and MoO 3 Under the mechanical and chemical coupling, the oxide film formed on the surface is preferentially removed, so as to achieve the effect of pol...

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Abstract

According to the non-load overall immersion type chemical mechanical coupling surface polishing method for the gear, the gear is integrally immersed during polishing, no external load is applied, ultrasonic assistance is applied, chemical and mechanical coupling and fluid and solid coupling are achieved, and the surface of the gear is efficiently and stably polished. The self-developed green and environment-friendly polishing solution mainly comprises deionized water, silicon carbide abrasive particles, hydrogen peroxide, phosphoric acid and malic acid. Compared with other surface treatment methods for gear parts, the method has the advantages that the gear can be comprehensively polished, an external load is not independently applied in the polishing process, the defects such as scratches and subsurface damage generated in the polishing process are effectively reduced, and the polished gear surface including a curved tooth profile can meet the smooth requirement. In addition, the developed polishing solution does not contain chemical reagents such as strong acid or strong alkali which are harmful to human bodies or the environment, and is green and environment-friendly.

Description

technical field [0001] The invention belongs to the field of precision manufacturing, and in particular relates to a gear no-load overall immersion chemical-mechanical coupling surface polishing method. [0002] technical background [0003] Gears and their gear products are important basic parts of mechanical equipment, and the main transmission parts of most complete sets of mechanical equipment are gear transmissions. It can be said that China's gear industry is the foundation of my country's machinery industry, and the development of the gear industry plays a vital role in my country's machinery industry. my country is a big country in gear production and sales. In 2020, China's gear output has exceeded 3 million tons, and the total annual sales of the entire industry have exceeded 100 billion yuan. [0004] The roughness of the tooth surface of the gear directly affects a series of properties such as the precision, strength, life, energy consumption, wear, and stability...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23F19/02
CPCB23F19/02
Inventor 张振宇崔祥祥孟凡宁刘杰廖龙兴李玉彪
Owner DALIAN UNIV OF TECH
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