Alloy steel gear capable of reducing gear face plastic deformation
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A technology of plastic deformation and alloy steel, which is applied in the field of gears and alloy steel gears, can solve the problems of easy wear, plastic deformation or breakage of gear teeth, and falling tooth surface, etc., so as to improve service life, improve mechanical properties, toughness and The effect of fatigue strength improvement
Inactive Publication Date: 2017-12-05
鲍凡凡
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[0007] Aiming at the deficiencies of traditional gears, such as that the toughness will decrease when the hardness increases, and the tooth surface of the traditional gear is easy to wear, and the teeth are prone to plastic deformation or breakage, the present invention proposes an alloy steel gear that can reduce the plastic deformation of the tooth surface. The components are more reasonable and the working life is longer, which can greatly improve the mechanical properties of gears and meet the needs of various load-bearing and high-speed occasions
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Embodiment 1
[0018] Alloy steel gears that can reduce the plastic deformation of the tooth surface. The components and weight percentages of the gears are: C 1.2%, Si 1.05%, Mn 0.125%, Cr 0.03%, W 0.015%, S 0.1%, P 0.12%, Zn 0.013%, Ti 0.005%, and the rest are ferrite + austenite Fe and unavoidable impurities.
Embodiment 2
[0020] Alloy steel gears that can reduce the plastic deformation of the tooth surface. The components and weight percentages of the gears are: C 1.6%, Si 1.8%, Mn 0.325%, Cr 0.06%, W 0.185%, S 0.3%, P 0.325%, Zn 0.021%, Ti 0.018%, and the rest are ferrite + austenite Fe and unavoidable impurities.
Embodiment 3
[0022] Alloy steel gears that can reduce the plastic deformation of tooth surfaces. The components and weight percentages of the gears are: C 1.5%, Si 1.2%, Mn 0.225%, Cr 0.04%, W 0.025%, S 0.15%, P 0.125%, Zn 0.015%, Ti 0.01%, and the rest are ferrite + austenite Fe and unavoidable impurities.
[0023] The composition of the invention is novel, and the manufacturing process is reasonable and clear. In order to improve the surface hardness of the gear, the surface carburizing treatment is carried out after the gear is formed, and the surface quenching treatment is carried out after the carburization is completed, which improves the hardness of the gear teeth and the surface strength of the gear teeth, and reduces To reduce the wear of the tooth surface, through normalizing and tempering treatment, the internal mechanical properties of the gear are improved, and its toughness and fatigue strength have been greatly improved. After the entire heat treatment is completed, grinding ...
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Abstract
The alloy steel gear that can reduce the plastic deformation of the tooth surface belongs to the field of powder metallurgy technology. The components and weight percentage of the gear are: C 1.2-1.6%, Si 1.05-1.8%, Mn 0.125-0.325%, Cr 0.03-0.06% , W 0.015~0.185%, S 0.1~0.3%, P 0.12~0.325%, Zn 0.013~0.021%, Ti 0.005~0.018%, and the rest is Fe with metallographic structure of ferrite + austenite and unavoidable Impurities. The surface carburizing treatment of the present invention improves the surface hardness of the gear, and the surface quenching treatment improves the hardness of the gear teeth and the surface strength of the gear teeth, reduces the wear of the tooth surface, and improves the gear's hardness through normalizing and tempering treatment. The internal mechanical properties, toughness and fatigue strength have been greatly improved. Finally, the grinding treatment is adopted, especially the stress on the surface is passivated. The use requirements of speed occasions.
Description
technical field [0001] The invention belongs to the technical field of powder metallurgy and relates to a gear, in particular to an alloy steel gear which can reduce the plastic deformation of the tooth surface. Background technique [0002] China's gear industry has developed rapidly during the "Tenth Five-Year Plan" period: in 2005, the annual output value of the gear industry increased from 24 billion yuan in 2000 to 68.3 billion yuan, with a compound annual growth rate of 23.27%, and it has become the largest in China's mechanical basic parts. industry. In terms of market demand and production scale, China's gear industry has surpassed Italy in the global ranking, ranking fourth in the world. [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. With the rapid development of the national economy, the total annual sales of the entire ...
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