Low-noise self-lubrication small and medium modulus cylindrical gear and preparation method thereof

A small and medium modulus, cylindrical gear technology, applied in the field of gear processing, can solve problems such as wear, poor self-lubricating performance of cylindrical gears, large vibration and noise vibration, etc., to achieve uniform as-cast structure, uniform mechanical properties, and long heat preservation time shortened effect

Active Publication Date: 2019-06-14
XIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a low-noise self-lubricating medium and small modulus cylindrical gear, which solves the problems of poor self-lubricating performance, large vibration and noise vibration, and serious wear of the existing cylindrical gear

Method used

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  • Low-noise self-lubrication small and medium modulus cylindrical gear and preparation method thereof
  • Low-noise self-lubrication small and medium modulus cylindrical gear and preparation method thereof
  • Low-noise self-lubrication small and medium modulus cylindrical gear and preparation method thereof

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Embodiment

[0063] According to the mechanical properties of the ultra-fine ADI to be produced, select the QT500-10 brand, and draw a bar with an outer diameter of 100mm, and process it into a small and medium modulus cylindrical gear.

[0064] A method for preparing a low-noise self-lubricating medium and small modulus cylindrical gear of the present invention comprises the following steps:

[0065] The casting materials (60% Q14# bread iron, 20% low carbon steel leftovers, 20% nodular iron return material) are melted into molten iron in an intermediate frequency induction furnace, and adjusted to the mass percentage of the following components: C: 3.50±0.05 %, Si: 1.40±0.05%, Mn: ≤0.3%, P: ≤0.015%, S: ≤0.015%, Cr: 0.3-0.5%, Cu: 0.5-1.0%, Ni: 0.5-1.0%, other alloys Elements: ≤0.3%, the balance is Fe, the sum of the mass percentages of the above components is 100%, and the carbon content is 99.95%-100% of the theoretical carbon equivalent.

[0066] For horizontal continuous casting profi...

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Abstract

The invention discloses a preparation method of a low-noise self-lubrication small and medium modulus cylindrical gear. The preparation method comprises the following steps of molten iron melting, pouring and condensation, proximate matter drawing, proximate matter performance detecting, annealing treatment, sawing and turning, aging treatment, gear hobbing or gear milling, high-frequency induction and isothermal quenching, and rough grinding and fine grinding to a preset assembly size. The graphite nodule diameter of the gear part of the obtained cylindrical gear is less than or equal to 20 [mu]m, the nodule density is greater than or equal to 300 per mm2, and the rate of spheroidization is 100%; and the graphite nodule diameter of the root part is less than or equal to 30 [mu]m, the nodule density is greater than or equal to 200 per mm2, and the rate of spheroidization is 100%. According to the preparation method, the surface contact fatigue strength and the gear root bending fatiguestrength of the prepared cylindrical gear are improved, hardness of other parts of a basal body is increased to resist abrasion, adhesive abrasion caused by sliding friction among gear surfaces is effectively prevented, the service life is prolonged, and dispersed distribution ultra-fine graphite nodules also make the gear have the outstanding sound absorption and shock absorption effects.

Description

technical field [0001] The invention belongs to the technical field of gear processing, and in particular relates to a low-noise self-lubricating medium and small modulus cylindrical gear, and also relates to a preparation method of the low-noise self-lubricating medium and small modulus cylindrical gear. Background technique [0002] Small and medium modulus cylindrical gears are the most important type of basic parts in mechanical transmission, with a large quantity and a wide range. During the operation of the existing cylindrical gear, the direction of the sliding friction force on the tooth surface will be reversed at the node, resulting in force pulsation on the gear node, forming a pulsating impact; on the other hand, each stressed gear tooth periodically The elastic deformation of the gear prevents the next stressed gear tooth from being in smooth contact with the designed tooth profile and collides, forming a "meshing impact force", which excites the gear's circumfe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/14B22D11/04B22D11/20C21D1/20C21D5/00C21D9/32C22C33/08C22C37/04C22C37/08C22C37/10
Inventor 许旸刘保建颜国君蒋百铃
Owner XIAN UNIV OF TECH
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