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Preparation method of mixed ultra-hard honing oil stone

A kind of honing oil stone and hybrid technology, which is applied in the direction of grinding/polishing equipment, abrasive materials, grinding devices, etc., can solve the problems affecting the honing performance of honing oil stone, and achieve the effect of high grinding efficiency, long service life and simple process

Active Publication Date: 2016-07-27
ZHENJIANG N E T DIAMOND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In fact, compared with Ti or Ni plating on diamond or CBN abrasive grains, because Ti and Ni plating are more active than W, they can easily enter the metal matrix of the honing oil stone during the sintering process, such as in the metal bond Cu, Sn and other metals form brittle intermetallic compounds. In addition, Ni plating will also cause graphitization of diamond, thus affecting the honing performance of honing oilstone.

Method used

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  • Preparation method of mixed ultra-hard honing oil stone
  • Preparation method of mixed ultra-hard honing oil stone

Examples

Experimental program
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Effect test

Embodiment example 1

[0032] (1) Combine commercially available diamond with a particle size of about 120 μm, ammonium tungstate (calculated in moles of tungsten atoms), and salt (sodium chloride: potassium chloride = 1:1, molar ratio) at a molar ratio of 20:1:20 Mix and then put it in a ball mill jar for roller milling for 24 hours; take out the ball milled mixed powder, put it in an alumina crucible, heat it to 1000°C under vacuum, keep it warm for 120min, and subject the obtained product to multiple times of ultrasonic vibration and boiling in distilled water To remove the salt, tungsten-coated diamond is obtained. Put commercially available CBN abrasive grains with a particle size of about 80 μm in HNO 3 After being boiled in NaOH solution and rinsed and purified, it is placed in a magnetron sputtering coating machine, with a mass fraction of 99.9% tungsten as the target material, placed in a tray for ultrasonic vibration to make the coating uniform, and the thickness of the coating is controll...

Embodiment example 2

[0036] (1) The commercially available diamond with a particle size of about 120 μm, ammonium paratungstate (calculated in terms of moles of tungsten atoms), and salt (sodium chloride: sodium carbonate: barium chloride = 1:1:1, molar ratio) at a ratio of 15:1:15 The molar ratio is mixed, and then placed in a ball mill tank for roller milling for 48 hours; the milled mixed powder is taken out, placed in an alumina crucible, heated to 1100°C under vacuum, and kept for 60 minutes, and the obtained product is subjected to multiple ultrasonic vibrations Boil with distilled water to remove salt, and obtain tungsten-coated diamond; put commercially available CBN abrasive grains with a particle size of about 100 μm in HNO 3 After being boiled in NaOH solution and rinsed and purified, it is placed in a magnetron sputtering coating machine, with a mass fraction of 99.9% tungsten as the target material, placed in a tray for ultrasonic vibration to make the coating uniform, and the thicknes...

Embodiment example 3

[0040] (1) The commercially available diamond with a particle size of about 120 μm, ammonium metatungstate (calculated in terms of moles of tungsten atoms), and salt (sodium chloride: sodium carbonate: sodium sulfate = 1:1:1, molar ratio) are mixed in a ratio of 15:1 : 15 molar ratio, and then placed in a ball mill tank for roller milling for 36 hours; the ball-milled mixed powder was taken out, placed in an alumina crucible, heated to 1200°C under vacuum, kept for 30min, and the resulting product was subjected to multiple Ultrasonic vibration and distilled water boiling to remove salt, that is, to obtain tungsten-coated diamond; commercially available CBN abrasive grains with a particle size of about 90 μm were sequentially placed in HNO 3 After being boiled in NaOH solution and rinsed and purified, it is placed in a magnetron sputtering coating machine, with a mass fraction of 99.9% tungsten as the target material, which is placed in a tray and ultrasonically vibrated to make...

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Abstract

The invention relates to the technical field of ultra-hard honing, in particular to a preparation method of a mixed ultra-hard honing oil stone. The preparation method of the mixed ultra-hard honing oil stone is characterized in that diamond with the surface being subjected to tungsten-plating metallization and cubic boron nitride (CBN) with the surface being subjected to tungsten-plating metallization are used for preparing the honing oil stone as abrasive materials. The preparation method comprises the steps that firstly, the molten salt process and magnetron sputtering tungsten-plating pretreatment are conducted on diamond abrasive particles and CBN abrasive particles; secondly, the pretreated abrasive particles and metal bonding agent powder are subjected to ball milling after being mixed according to a certain proportion; and thirdly, mixed powder subjected to ball milling is placed in a graphite mold to be hot-pressed and sintered or is placed in a steel mold to be pressed into a blank, and non-pressure compacting sintering is conducted in the reducing atmosphere. The honing oil stone prepared through the preparation method has the advantages of being high in strength and hardness, high in honing efficiency, high in self-sharpness, long in service life and the like.

Description

technical field [0001] The invention relates to the technical field of superhard honing, in particular to a preparation method of a hybrid superhard honing whetstone. In particular, a method for preparing a tungsten-plated abrasive grain superhard honing stone, the purpose of which is to enhance the interface bonding between the abrasive grain and the metal adhesive and optimize the preparation process to improve the grinding efficiency, self-sharpening, and use of the honing stone. life and reduce production costs. Background technique [0002] Superhard honing is a kind of honing tool (such as honing rod, disc, wheel, disc, etc.) that uses diamond or / and CBN as abrasive grains for inner holes, outer circular surfaces, planes, etc. of metal, ceramics, glass, and hard alloy workpieces. A processing method for smoothing and finishing surfaces such as special curved surfaces. Superhard honing tools are widely used in engineering and mining machinery, energy and chemical indu...

Claims

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Application Information

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IPC IPC(8): C22C9/02C22C26/00C22C1/05C22C1/10B22F3/16B22F3/14B22F1/02B24D18/00B24D3/10
CPCC22C1/05C22C1/101C22C9/02C22C26/00B22F3/14B22F3/16B24D3/10B24D18/0009B22F2003/145B22F1/17
Inventor 刘桂武方国祥乔冠军陶俊楠周彰伟邵海成张相召
Owner ZHENJIANG N E T DIAMOND
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