Metal-based diamond grinding wheel and manufacturing method thereof

A manufacturing method and diamond technology, applied in the direction of manufacturing tools, metal processing equipment, abrasives, etc., can solve the problems of small chip space, high operating temperature, chip adhesion and blockage, etc., and achieve a large space for metal chips and abrasives. The effect of increasing grinding speed and reducing power loss

Inactive Publication Date: 2019-06-14
NORTHEASTERN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional superhard abrasives (grinding wheels) are mostly manufactured by resin, ceramics, metal bond sintering and electroplating. The problem is that single crystal particles are only mechanically embedded in the bond and electroplating layer, and bond and Weak force between plating layers
Specifically, although the resin bond is relatively easy to process and repair, it has poor heat resistance, low bonding strength, serious abrasive shedding, and seriously affects efficiency; the vitrified bond is relatively easy to repair and has a high service temperature, but it is brittle and impact toughness. Poor fatigue, prone to brittle cracking, difficult to use in high-speed machining
Although metal bond sintering has st

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0039] Example 1

[0040] A metal-based diamond grinding wheel includes a steel core and an abrasive ring. The steel core and the abrasive ring are combined by a resin adhesive. The abrasive ring is prepared by mass percentage of the following components: diamond abrasive: 35%, metal Bonding agent: 55%, auxiliary bonding agent: 10%, the sum of the mass percentages of diamond abrasive, metal bonding agent and auxiliary bonding agent is 100%; the mass percentage of the components contained in the metal bonding agent is: Cu powder: 60 %, Sn powder: 30%, Ti powder: 10%; Cu powder, the sum of Sn powder and Ti powder mass percentage is 100%; the porosity of the abrasive ring is 30%; the diamond abrasive, Cu powder, Sn powder and The particle size of Ti powder is 40 μm; the auxiliary binder is acrylic emulsion.

[0041] The specific dimensions of the grinding wheel are 80 mm in inner diameter, 100 mm in outer diameter, and 10 mm in thickness. Macro hardness is 80HRB, impact toughness is...

Example Embodiment

[0053] Example 2

[0054] A metal-based diamond grinding wheel includes a steel core and an abrasive ring. The steel core and abrasive ring are combined by a resin adhesive. The abrasive ring is prepared by mass percentage of the following components: diamond abrasive: 45%, metal Bonding agent: 40%, auxiliary bonding agent: 15%, the sum of the mass percentages of diamond abrasive, metal bonding agent and auxiliary bonding agent is 100%; the mass percentage of the components contained in the metal bonding agent is: Cu powder: 50 %, Sn powder: 45%, Ti powder: 5%; Cu powder, the sum of Sn powder and Ti powder mass percentage is 100%; the porosity of the abrasive ring is 40%; the diamond abrasive, Cu powder, Sn powder and The particle size of Ti powder is 60 μm; the auxiliary binder is acrylic emulsion.

[0055] The specific dimensions of the grinding wheel are 80 mm in inner diameter, 100 mm in outer diameter, and 10 mm in thickness. Macro hardness is 90HRB, impact toughness is 0.11...

Example Embodiment

[0066] Example 3

[0067] A metal-based diamond grinding wheel, comprising a steel core abrasive ring, the steel core and the abrasive ring are bonded by a resin adhesive, wherein the abrasive ring is prepared by mass percentage from the following components: diamond abrasive: 47%, metal bonded Agent: 48%, auxiliary binder: 5%, the sum of the mass percentages of diamond abrasive, metal bond and auxiliary bond is 100%; the mass percentage of the components contained in the metal bond is: Cu powder: 47% , Sn powder: 43%, Ti powder: 10%; Cu powder, the sum of the mass percentages of Sn powder and Ti powder is 100%; the porosity of the abrasive ring is 25%; the diamond abrasive, Cu powder, Sn powder and Ti The particle size of the powder is 75 μm; the auxiliary binder is acrylic emulsion.

[0068] The specific dimensions of the grinding wheel are 80 mm in inner diameter, 100 mm in outer diameter, and 10 mm in thickness. Macro hardness is 100HRB, impact toughness is 0.12J / cm 2 , When ...

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Abstract

The invention relates to a metal-based diamond grinding wheel and a manufacturing method thereof. The grinding wheel comprises a steel core and an abrasive ring, wherein the abrasive ring is preparedfrom, by mass, 35-55 percent of diamond abrasive, 40-55 percent of metal binder and 5-15 percent of auxiliary binder. The metal binder contains, by mass, 50 to 60 percent of Cu powder, 30 to 45 percent of Sn powder and 5 to 10 percent of Ti powder. A method for manufacturing the metal-based diamond grinding wheel comprises the following steps: according to the proportion of the abrasive ring, uniformly mixing the components, uniformly mixing with the auxiliary binder, drying, sieving and molding, sintering in an inert gas atmosphere, raising the temperature to the sintering temperature at a heating rate of 5-15 DEG C/min, sintering for 20-60 min, cooling to obtain an abrasive ring blank, and bonding with a steel core to obtain the metal-based diamond grinding wheel. The method is short insintering time, the prepared abrasive wheel has good thermal conductivity and large space for accommodating metal chips and abrasives in the working process, is not easy to block in the high-speed grinding process, is sharp in grinding, has high grinding accuracy, and has self-sharpness.

Description

technical field [0001] The invention relates to the field of superhard abrasives, in particular to a metal-based diamond grinding wheel and a manufacturing method thereof. Background technique [0002] With the development of modern machining in the direction of high precision, high speed, hard machining, dry machining (no coolant) and cost reduction, quite high requirements are put forward for the performance of abrasive tools. Traditional silicon carbide and corundum ordinary abrasive molds can no longer fully meet the current high-speed, high-efficiency, and high-precision grinding requirements. Therefore, it is an inevitable development to develop various superhard grinding materials with excellent wear resistance and stable processing for a long time trend. Currently commonly used superhard grinding materials include diamond and cubic boron nitride abrasives. Diamond is the hardest material and is extremely wear-resistant, suitable for high-speed grinding and ultra-pr...

Claims

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Application Information

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IPC IPC(8): B24D3/06B24D18/00
Inventor 王聪范永刚
Owner NORTHEASTERN UNIV
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