CBN (Cubic Boron Nitride) grinding wheel

A grinding wheel and abrasive technology, applied in the field of CBN grinding wheels, can solve the problems of poor impact resistance and fatigue performance, low bonding strength and holding force, difficult to apply to high-speed machining, etc., and achieve high grinding precision, short sintering time and strong holding force Effect

Active Publication Date: 2017-05-10
磐维科技(青岛)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Resin bond is easy to process and repair, but its use temperature is low, its bonding strength and holding force to abrasives are low, abrasives are easy to fall off, and grinding accuracy is poor; ceramic bond has better bonding strength, high holding force, and high use temperature , but its high brittleness, poor thermal conductivity, poor impact resistance and fatigue performance, it is difficult to apply to high-speed processing
Although the existing metal bond has good strength, toughness and heat resistance, there is usually a

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0021] Example 1:

[0022] The metal bonding agent of this embodiment is composed of the following raw material components in mass percentages: Cu 52%, Sn 32%, TiH 2 16%; the total mass fraction of each component is 100%; the above-mentioned raw materials are Cu powder, Sn powder and TiH2 powder; the particle size of the above-mentioned raw material powder is 30μm.

[0023] The CBN grinding wheel of this embodiment is made of the following raw materials in mass percentages: 48% of CBN abrasive, 45% of metal bond powder, and 7% of auxiliary binder. The particle size of the above CBN abrasive is 20 μm.

[0024] The preparation method of the above CBN grinding wheel is as follows:

[0025] (1) Mixing: According to the formula, take CBN abrasive, Cu powder, Sn powder and TiH2 powder into the mixer, add the auxiliary binder and mix for 4 hours to obtain the mixture;

[0026] (2) Drying: Put the uniformly mixed raw materials in step 1 into the dryer and heat to 120ºC, and keep it warm for 3 ...

Example Embodiment

[0031] Example 2:

[0032] The metal bond of this embodiment is composed of the following raw material components in mass percentages: Cu powder 52%, Sn powder 32%, TiH 2 The powder is 16%; the total mass fraction of each component is 100%; the particle size of the above-mentioned raw material powder is 60μm.

[0033] The CBN grinding wheel of this embodiment is made of the following raw materials in mass percentages: 45% of CBN abrasive, 48% of metal bond powder, and 7% of auxiliary binder. The particle size of the above CBN abrasive is 45 μm.

[0034] The preparation process of CBN grinding wheel is as follows:

[0035] (1) Mixing: Take CBN abrasive, Cu powder, Sn powder and TiH2 powder according to the formula, add auxiliary binder and manually mix for 4 hours to obtain a mixture;

[0036] (2) Drying: Put the uniformly mixed raw materials in step 1 into the heater, heat it to 120ºC, and keep it warm for 3 hours;

[0037] (3) Forming: the raw materials dried in step 2 are sieved, even...

Example Embodiment

[0040] Example 3:

[0041] The metal bond of this embodiment is composed of the following raw material components in mass percentage: Cu powder 60%, Sn powder 20%, TiH 2 Powder 20%; the sum of the mass fractions of each component is 100%; the particle size of the above-mentioned raw material powder is 80μm.

[0042] The CBN grinding wheel of this embodiment is made of the following raw materials in mass percentages: 45% of CBN abrasive, 48% of metal bond powder, and 7% of auxiliary binder. The particle size of the above CBN abrasive is 80 μm.

[0043] The preparation process of CBN grinding wheel is as follows:

[0044] (1) Mixing: According to the formula, take CBN abrasive, Cu powder, Sn powder and TiH2 powder into the mixer, add the auxiliary binder and mix for 4 hours to obtain the mixture;

[0045] (2) Drying: Put the uniformly mixed raw materials in step 1 into the dryer and heat to 120ºC, and keep it warm for 3 hours;

[0046] (3) Forming: the raw materials dried in step 2 are si...

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Abstract

The invention relates to the field of superhard materials, and concretely relates to a CBN (Cubic Boron Nitride) grinding wheel. The invention provides the CBN grinding wheel, which has favorable shock resistance and shape retention, and can bear a larger load during a high-speed grinding process. The CBN grinding wheel comprises a steel core and an abrasive ring. The steel core and the abrasive ring are combined through a binding agent. The CBN grinding wheel is characterized in that the abrasive ring is prepared from the following raw materials in percentage by mass: 30 to 70 percent of CBN abrasive, 20 to 60 percent of metal binding agent, and 2 to 10 percent of auxiliary adhesion agent. The CBN grinding wheel provided by the invention has favorable heat conductivity and is beneficial for reducing the grinding temperature, so that the power loss is reduced, and the grinding speed is improved; the auxiliary adhesion agent in a formula is beneficial for forming pores, and the characteristic of high holding force of the metal binding agent is combined, so that a chip space can be effectively enlarged, and abrasives are more sufficiently utilized; and the grinding wheel has the characteristics of high grinding efficiency, low grinding temperature, low power loss, good processing accuracy, long service life and the like.

Description

technical field [0001] The invention relates to the field of superhard materials, in particular to a CBN grinding wheel. Background technique [0002] Modern machining is developing in the direction of high precision, high speed, hard machining, dry machining (no coolant) and cost reduction, which puts forward quite high requirements for the performance of superhard abrasive tools. Currently commonly used superhard grinding materials include cubic boron nitride (CBN) and diamond abrasives. Although the hardness of CBN abrasive is inferior to that of diamond, its thermal stability and chemical stability are strong, especially it will not react with iron and iron alloys, so it can be used in iron-based alloy materials such as hardened steel, high-speed tool steel, bearing steel, stainless steel, It has been widely used in the grinding of many high-strength toughness difficult-to-machine materials such as die steel, heat-resistant steel, advanced high-strength steel and high-c...

Claims

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Application Information

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IPC IPC(8): B24D3/10B24D3/34B24D18/00
CPCB24D3/10B24D3/34B24D3/342B24D18/0009
Inventor 胡成洋其他发明人请求不公开姓名
Owner 磐维科技(青岛)有限公司
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