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A method for manufacturing metal bond superhard abrasive structured end face grinding wheel by laser cladding process

A metal bond, superhard abrasive technology, applied in abrasives, grinding devices, metal processing equipment, etc., can solve the problem that the laser sintering powder layer cannot be closely combined with the matrix, the abrasive grains and the brazing powder are not firmly combined, and the unfavorable super Problems such as the preparation of hard abrasive grinding tools, to achieve the effect of shortening processing time, reducing processing costs, and making flexible and simple production

Active Publication Date: 2019-04-30
NORTHEASTERN UNIV LIAONING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, there are many unavoidable defects in the laser brazing superhard abrasive grain processing method. For the laser brazing superhard abrasive grain processing method of powder coating, it is difficult to ensure the uniformity of the powder coating thickness, and the thickness of the powder coating is too thick. As a result, the laser sintering powder layer cannot be tightly combined with the matrix, so that the superhard abrasive grains together with the metal bond fall off from the metal matrix during processing, and the existing process cannot guarantee the integrity of the metal powder laid in a thinner case, which is not conducive to ultra-hard grinding. Preparation of Hard Abrasive Grinding Tools
For the laser brazing superabrasive process of spraying abrasive grains, the combination of abrasive grains and brazing powder is not firm, and the processed grinding tools have abrasive grains falling off during the grinding process.
Also, the machined surface is too undulating to meet the standards of grinding tools
Under the processing methods of these two processes, the abnormal failure of superhard abrasive grains is also very serious

Method used

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  • A method for manufacturing metal bond superhard abrasive structured end face grinding wheel by laser cladding process
  • A method for manufacturing metal bond superhard abrasive structured end face grinding wheel by laser cladding process
  • A method for manufacturing metal bond superhard abrasive structured end face grinding wheel by laser cladding process

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Comparison scheme
Effect test

Embodiment 1

[0047] A method for producing a metal bond superabrasive structured end face grinding wheel with a laser cladding process, comprising the following steps:

[0048] S1. Weigh the atomized spherical 400-mesh copper-based alloy powder Cu-10Sn-12Ti and non-coated CBN according to the mass fraction ratio of 40:3, and mix them in a mixing bottle to obtain an unmixed uniform metal powder super Hard abrasive mixed powder;

[0049] S2. Add corundum balls of a certain quality and size to the mixing bottle. The mass ratio of the total mass of the corundum balls to the unmixed metal powder superhard abrasive mixed powder obtained in step S1 is 6:1, and the size of the corundum balls is 1. After that, seal the mixing bottle and put it into a ball mill for ball milling to obtain a uniformly mixed metal powder superabrasive mixed powder. The ball milling time is 5 hours;

[0050] S3. Pour the uniformly mixed metal powder superabrasive mixed powder together with corundum balls on the sieving...

Embodiment 2

[0056] A method for producing a metal bond superabrasive structured end face grinding wheel with a laser cladding process, comprising the following steps:

[0057] S1. Weigh the atomized spherical 400-mesh elemental copper powder, elemental nickel powder, elemental tin powder, and elemental titanium powder according to the mass fraction ratio of 7:6:5:2, and pour them into the mixing bottle. The elemental copper Powder, the purity of the elemental nickel powder, the elemental tin powder and the elemental titanium powder is 99.9%, and the titanium-plated CBN is based on the elemental copper powder, the elemental nickel powder, the elemental tin powder and the The total mass of the elemental titanium powder and the CBN mass ratio of the plated titanium is 40:3 for weighing, and together with the elemental copper powder, the elemental nickel powder, the elemental tin powder and the elemental titanium powder Mix in the mixing bottle to obtain metal powder superabrasive mixed powde...

Embodiment 3

[0065] A method for producing a metal bond superabrasive structured end face grinding wheel with a laser cladding process, comprising the following steps:

[0066] S1. Weigh atomized spherical 300-mesh silver-based alloy powder 70.5Ag-27.5Cu-2Ti and non-coated diamond according to the mass fraction ratio of 20:1, and mix them in a mixing bottle to obtain unmixed metal Powder superabrasive mixed powder;

[0067] S2. Add corundum balls of a certain quality and size to the mixing bottle. The mass ratio of the total mass of the corundum balls to the unmixed metal powder superabrasive mixed powder obtained in step S1 is 6:1, and the size of the corundum balls is 3mm. , after that, the mixing bottle is sealed, put into a ball mill and carry out ball milling to obtain a uniformly mixed metal powder superabrasive mixed powder, and the time of ball milling is 2 hours;

[0068] S3. Pour the uniformly mixed metal powder superabrasive mixed powder together with corundum balls on the siev...

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Abstract

The invention discloses a method for manufacturing a metal bond superabrasive structurally arranged end-face grinding wheel using a laser cladding process, which has the following steps: mixing metal powder and superabrasive; ball milling; sieving; pouring into the laser In the cladding powder feeder; polish the metal substrate, remove the oil dirt and impurities on the metal substrate, and clean the surface of the metal substrate to obtain a smooth metal substrate to be processed; according to certain laser processing parameters and laser scanning strategies, the smooth metal substrate is processed Process the metal substrate as the substrate for laser cladding processing, perform laser cladding superabrasive processing, and obtain a metal substrate that forms a cladding layer of a specific shape; cut the metal substrate that forms a cladding layer of a specific shape into disc-shaped metal The base is assembled with the processed tool holder to form a grinding wheel for end face grinding. The invention is flexible, has high production efficiency, reduces the probability of abnormal failure of superhard abrasives, and improves the binding force and integrity of superhard abrasives in metal bonding agents.

Description

technical field [0001] The invention relates to a method for manufacturing a superhard abrasive processing tool, in particular to a method for manufacturing a metal bond superhard abrasive structured and arranged end surface grinding wheel by a laser cladding process. Background technique [0002] As modern industrial technology and high-performance technology products have higher and higher requirements for parts processing precision, surface roughness and integrity, processing efficiency and batch quality stability, the role of abrasive processing is becoming increasingly important. At present, there are mainly two types of manufacturing methods for new superhard grinding tools, one is vacuum furnace high-temperature brazing method, and the other is high-frequency induction brazing method. Compared with the traditional grinding wheel preparation method, these two new superhard grinding tool manufacturing methods have higher protruding height of abrasive grains, stronger ho...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B24D3/06B24D18/00
CPCB24D3/06B24D18/0072
Inventor 于天彪赵绪峰姜盛鑫赵雨孙佳钰杨林王宛山
Owner NORTHEASTERN UNIV LIAONING