Technique for processing silicon fluoride ball in G3 grade

A processing technology, technology of silicon nitride balls, applied in the direction of metal processing equipment, manufacturing tools, spherical grinders, etc., can solve the problems of easy magnetization, self-heavy weight, high lubrication requirements, etc., and achieve the effect of simple process and convenient production

Inactive Publication Date: 2007-10-10
SHANDONG DONGE STEEL BALL GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] We know that the current bearings and special-purpose steel balls are generally made of bearing steel. With the development of technology, some unsuitable shortcomin

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  • Technique for processing silicon fluoride ball in G3 grade

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Embodiment 1

[0027] Embodiment 1: In order to deepen the understanding of the present invention, the following describes the present invention in detail by taking silicon nitride balls with a processing specification of φ5.0 mm as an example. The size of the blank is φ5.40mm, and there is a total grinding amount of 0.40mm. Grinding equipment: 3M4780B vertical circulation grinding ball machine produced by Henan Xinji. The grinding liquid uses diesel oil as the oil agent. Add a milling agent every 60 minutes, and the milling agent is made by milling boron carbide abrasives of different sizes in different processes and 200 type stearic acid on a milling machine by weight ratio 1 / 2 for 48 hours.

[0028] 1. Eliminate internal stress

[0029] Use a drying box or a heating furnace to heat the ceramic ball to 140°C, keep it warm for 6 hours, and then cool it to room temperature.

[0030] 2. Coarse grinding process

[0031] Processing specifications: φ5.0mm Blank size: φ5.40mm

[0032] Theore...

Embodiment 2

[0063] Embodiment 2: The present invention will be described in detail by taking a silicon nitride ball with a processing specification of φ12.7 mm as an example. The size of the blank is φ13.1mm, and the total grinding amount is 0.40mm. Grinding equipment: 3M4780B vertical circulation grinding ball machine produced by Henan Xinji. The grinding liquid uses diesel oil as the oil agent. Every 50 minutes, add a mixed grinding liquid, which is made by mixing boron carbide abrasives of different particle sizes and 200 type stearic acid in a weight ratio 3 / 4 on a mixing mill for 48 hours in different processes.

[0064] 1. Eliminate internal stress

[0065] Use a drying box or heating furnace to heat the ceramic ball to 150°C, keep it warm for 7 hours, and then cool it to room temperature.

[0066] 2. Coarse grinding process

[0067] Processing specifications: φ12.7mm Blank size: φ13.1mm

[0068] Theoretical grinding amount: 0.21mm Use abrasive: 320 mesh

[0069] Unloading siz...

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Abstract

A process for preparing the G3-class silicon nitride balls includes such steps as eliminating internal stress by heating at 130-160 deg.C for 6-8 hr and cooling in air, primary grinding, fine grinding, superfine grinding, and brightening by chromium oxide.

Description

technical field [0001] The invention relates to a processing technology of a silicon nitride ball for bearings and a special-purpose silicon nitride ball, in particular a processing technology of a G3 grade silicon nitride ceramic ball whose diameter is less than φ16mm. Background technique [0002] We know that the current bearings and special-purpose steel balls are generally made of bearing steel. With the development of technology, some unsuitable shortcomings of bearing steel have also been exposed, such as poor high temperature resistance, easy magnetization, no Insulation, high requirements for lubrication, self-heavy, etc. The ceramic ball has the advantages of high rigidity, high speed, long life, low heat generation, corrosion resistance, non-magnetic, good insulation performance, etc., and it is the future development direction. [0003] The processing of ceramic balls is the key to ceramic ball bearings, and its processing accuracy and quality directly affect th...

Claims

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Application Information

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IPC IPC(8): B24B11/00C09K3/14
Inventor 王作山
Owner SHANDONG DONGE STEEL BALL GRP
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