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A kind of preparation method of hybrid superhard honing oil stone

A honing whetstone and hybrid technology, used in grinding/polishing equipment, abrasives, grinding devices, etc., can solve the problems affecting the honing performance of honing whetstones, and achieve high grinding efficiency, simple process and strong self-sharpening. Effect

Active Publication Date: 2018-01-12
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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  • A kind of preparation method of hybrid superhard honing oil stone
  • A kind of preparation method of hybrid superhard 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. The commercially available CBN abrasive grains with a particle size of about 80 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, placed in a tray for ultrasonic vibration to make the coating uniform, and the thickness o...

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 superhard honing, in particular to a preparation method of a hybrid superhard honing whetstone. It is characterized in that a diamond and cubic boron nitride (CBN) treated with tungsten-plated metallization on the surface are used as abrasives to prepare honing oil stones, and the steps are first to carry out molten salt method and magnetron sputtering plating on diamond and CBN abrasive grains respectively. Tungsten pretreatment, and then the pretreated abrasive grains and metal bond powder are mixed in a certain proportion and then ball milled, and then the ball milled mixed powder is placed in a graphite mold for hot pressing and sintering, or placed in a steel mold and pressed into a body, and sintered in a reducing atmosphere without pressure. The honing oil stone prepared by the invention has the advantages of high strength and high hardness, high grinding efficiency, strong self-sharpening, long 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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Patent Type & Authority Patents(China)
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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