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Fe-based cBN grinding wheel and preparation method thereof

A grinding wheel and iron-based binder technology, which is applied in the manufacture of tools, metal processing equipment, grinding/polishing equipment, etc., can solve the problem of insufficient bonding force between diamond abrasives and binders, can not meet the processing requirements, and does not have high temperature resistance And other problems, to achieve the effect of improving the service life and processing efficiency, increasing the grinding speed, and excellent mechanical properties

Active Publication Date: 2022-04-08
长沙市萨普新材料有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But also there are some weak points in the superhard grinding wheel on the market at present, as CN110238766A diamond grinding wheel, although satisfied the requirement of grinding material to hardness, high production cost, also have the gap between diamond abrasive and bonding agent. Insufficient binding force leads to breakage, falling off, or even collapse and other dangerous situations, which prevents it from being widely used in the market.
Another example is CN109877719A and CN108818331 metal-based cBN grinding wheel, although the sintering process has been improved, the material has excellent thermal conductivity, and the temperature on the surface of the grinding workpiece can be quickly reduced, but it cannot meet the requirements of the material for processing in high-speed grinding. Does not have high temperature resistance

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  • Fe-based cBN grinding wheel and preparation method thereof
  • Fe-based cBN grinding wheel and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0034] Present embodiment takes following technical scheme:

[0035] An Fe-based cBN grinding wheel, wherein the cBN grinding wheel is prepared by combining the following parts according to the mass percentage: cBN abrasive: 15%, metal bond: 67%, auxiliary binder: 10%, pore-forming agent: 8 %, the sum of cBN abrasive, metal bond and auxiliary binder and pore-forming agent overall mass percentage is 100%; the mass percentage of described metal bond contains composition is: Fe powder: 60%, Co powder: 25% , Mo powder: 15%; Fe powder, the sum of Co powder and Mo powder mass percent is 100%; The porosity of emery wheel is 20%; The particle diameter of described cBN abrasive, Fe powder, Co powder and Mo powder is 200 μ m , purity ≥ 99%; the auxiliary binder is acrylic emulsion. The pore-forming agent is graphite, and the particle size of graphite is 80 μm

[0036] The basic dimensions of the grinding wheel are an outer diameter of 100 mm, an inner diameter of 80 mm, and a thicknes...

Embodiment 2

[0051] An Fe-based cBN grinding wheel, wherein the cBN grinding wheel is prepared by combining the following parts according to the mass percentage: cBN abrasive: 15%, metal bond: 67%, auxiliary binder: 10%, pore-forming agent: 8 %, the sum of cBN abrasive, metal bond and auxiliary binder and pore-forming agent overall mass percentage is 100%; the mass percentage of described metal bond contains composition is: Fe powder: 60%, W powder: 15% , Ni powder: 25%; Fe powder, the sum of W powder and Ni powder mass percentage is 100%; The porosity of grinding wheel is 25%; The particle diameter of described cBN abrasive, Fe powder, Co powder and Mo powder is 200 μ m , purity ≥ 99%; the auxiliary binder is acrylic emulsion. The pore-forming agent is graphite, and the particle size of graphite is 80 μm,

[0052] The basic dimensions of the grinding wheel are an outer diameter of 100 mm, an inner diameter of 80 mm, and a thickness of 8 mm.

[0053] The preparation method of the above-m...

Embodiment 3

[0067] An Fe-based cBN grinding wheel, wherein the cBN grinding wheel is prepared by combining the following parts according to the mass percentage: cBN abrasive: 15%, metal bond: 67%, auxiliary binder: 10%, pore-forming agent: 8 %, the sum of cBN abrasive, metal bond, auxiliary binder and pore-forming agent is 100%; the mass percentage of the metal bond contains: Fe powder: 50%, Co powder: 15% , W powder: 10%, Ni powder: 15%, Mo powder: 10%; Fe powder, Co powder, W powder, the sum of Ni powder and Mo powder mass percent is 100%; Grinding wheel porosity is 25%; The described The cBN abrasive, Fe powder, Co powder, W powder, Ni powder and Mo powder all have a particle size of 200 μm and a purity of ≥99%; the auxiliary binder is an acrylic emulsion. The pore forming agent is graphite. The particle size of graphite is 80 μm,

[0068] The basic dimensions of the grinding wheel are an outer diameter of 100 mm, an inner diameter of 80 mm, and a thickness of 8 mm.

[0069] The pre...

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Abstract

The invention discloses a Fe-based cBN grinding wheel and a preparation method thereof.The preparation method comprises the following steps that a cBN grinding material and an iron-based binding agent are mixed to obtain mixed powder A, then the mixed powder A, an auxiliary binding agent and a pore forming agent are mixed to obtain mixed powder B, the mixed powder B is subjected to hot press forming, a grinding wheel pressed blank is obtained, and the Fe-based cBN grinding wheel is obtained. And sintering the grinding wheel green body to obtain a grinding wheel green body, and sequentially carrying out quenching treatment and tempering treatment on the grinding wheel green body to obtain the Fe-based cBN grinding wheel. By optimizing the iron-based binder and combining the synergistic effect of the process, the obtained cBN grinding wheel has good high-temperature resistance, meanwhile, the strength is greatly improved, and the grinding wheel further has the advantages of being high in grinding precision, wide in machining range, long in service life, low in power loss, good in economic benefit and the like.

Description

technical field [0001] The invention belongs to the field of superhard abrasives, and in particular relates to an Fe-based cBN grinding wheel and a preparation method thereof. Background technique [0002] At present, as the requirements for precision machining technology continue to increase, the grinding process using superabrasive grinding wheels such as cubic boron nitride (cBN) grinding wheels has been widely used in rough grinding and fine grinding of various materials. At the same time, this processing technology has also become an indispensable part in the realization of precision and ultra-precision machining in the field of contemporary machinery manufacturing, and it is also one of the most basic technologies. Traditional abrasives such as silicon carbide and corundum cannot meet the current requirements for high-speed, high-efficiency, and high-precision grinding. Moreover, with the continuous development of contemporary grinding machines, the performance indica...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24D18/00B24D3/06B24D3/34
Inventor 陈帅鹏康希越张乾坤陈豫章
Owner 长沙市萨普新材料有限公司
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