A kind of bronze-based cbn grinding wheel and preparation method thereof

A bronze and grinding wheel technology, applied in the field of bronze-based CBN grinding wheel and its preparation, can solve the problems of small chip space, chip adhesion and blockage, high service temperature, etc., achieve a large space for metal chips and abrasives, reduce power loss, The effect of increasing the grinding speed

A bronze and grinding wheel technology, applied in the field of bronze-based CBN grinding wheel and its preparation, can solve the problems of small chip space, chip adhesion and blockage, high service temperature, etc., achieve a large space for metal chips and abrasives, reduce power loss, The effect of increasing the grinding speed

CN108818331BActive Publication Date: 2020-11-06NORTHEASTERN UNIV LIAONING
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A bronze-based CBN grinding wheel, which includes a steel core, an abrasive ring, the steel core and the abrasive ring are combined by a resin adhesive, wherein the abrasive ring is prepared from the following components by mass percentage: CBN abrasive: 40%, metal Bonding agent: 45%, auxiliary bonding agent: 15%, the sum of the mass percentage of CBN abrasive, metal bonding agent and auxiliary bonding agent is 100%; the mass percentage of the composition contained in the metal bonding agent is: Cu60Sn40 powder: 50% %, Ti powder: 50%, the sum of the mass percentages of Cu60Sn40 powder and Ti powder is 100%; the composition of the abrasive circle is: CBN abrasive 35%, metal bond 38%, porosity 27%, CBN abrasive, metal bond The sum of the volume percentages of pores and voids is 100%; the particle diameters of the CBN abrasive, Cu60Sn40 powder and Ti powder are all 50 μm; the auxiliary binder is acrylic emulsion.

[0038] The preparation method of above-mentioned CBN emery...

Embodiment 2

[0055]A bronze-based CBN grinding wheel, which includes a steel core, an abrasive ring, the steel core and the abrasive ring are combined by a resin adhesive, wherein the abrasive ring is prepared from the following components by mass percentage: CBN abrasive: 40%, metal Bonding agent: 40%, auxiliary bonding agent: 20%, the sum of the mass percentage of CBN abrasive, metal bonding agent and auxiliary bonding agent is 100%; the mass percentage of described metal bonding agent containing composition is: Cu60Sn40 powder: 55% %, Ti powder: 45%, the sum of the mass percentages of Cu60Sn40 powder and Ti powder is 100%; the composition of the abrasive circle is: CBN abrasive 37%, metal bond 32%, pores 31%, CBN abrasive, metal bond The sum of volume percentages of pores and voids is 100%; the particle diameters of the CBN abrasive, Cu60Sn40 powder and Ti powder are all 100 μm; the auxiliary binder is acrylic emulsion.

[0056] The preparation method of above-mentioned CBN emery wheel,...

Embodiment 3

[0073] A bronze-based CBN grinding wheel, which includes a steel core, an abrasive ring, the steel core and the abrasive ring are combined by a resin adhesive, wherein the abrasive ring is prepared from the following components by mass percentage: CBN abrasive: 35%, metal Bonding agent: 42%, auxiliary bonding agent: 23%, the sum of the mass percentage of CBN abrasive, metal bonding agent and auxiliary bonding agent is 100%; the mass percentage of described metal bonding agent containing composition is: Cu60Sn40 powder: 60 %, Ti powder: 40%, the sum of the mass percentages of Cu60Sn40 powder and Ti powder is 100%; the composition of the abrasive circle is: 35% of CBN abrasive, 30% of metal bond, 35% of pores, CBN abrasive, metal bond The sum of the volume percentages of pores and voids is 100%; the particle diameters of the CBN abrasive, Cu60Sn40 powder and Ti powder are all 150 μm; the auxiliary binder is acrylic emulsion.

[0074] The preparation method of above-mentioned CBN...

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Abstract

The invention discloses a bronze-based CBN grinding wheel and a preparation method thereof. The grinding wheel comprises a steel core and an abrasive ring. The steel core and the abrasive ring are bonded through a resin glue binder. The abrasive ring is prepared from a CBN abrasive, a metal bond and an auxiliary binder; the metal bond contains Cu60Sn40 powder and Ti powder; and the abrasive ring is composed of the CBN abrasive, the metal bond and pores. The preparation method comprises the steps that (1) the CBN abrasive, the Cu60Sn40 powder and the Ti powder are evenly mixed, and thus a mixture A is prepared; (2) the auxiliary binder and the mixture A are evenly mixed, and thus a mixture B is prepared; (3) the mixture B is dried; (4) the dried mixture B is sieved; (5) the sieved mixture Bis subjected to cold press molding; (6) an abrasive ring green body is sintered under inert gas atmosphere and then cooled, and thus an abrasive ring blank is prepared; and (7) the abrasive ring blank and the steel core are glued through the resin glue binder, and thus the bronze-based CBN grinding wheel is obtained.

Description

technical field [0001] The invention relates to the field of superhard abrasives, in particular to a bronze-based CBN grinding wheel and a preparation 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 cubic boron nitride (CBN) and diamond abrasives. Although the hardness of cubic boron nitride abrasive is lower than that of diamond, it is still much higher ...

Claims

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Application Information

Patent Timeline
06 Nov 2020
Publication
CN108818331B
IPC
B24D3/06; B24D3/34; B24D18/00
CPC
B24D3/06; B24D3/342; B24D3/346; B24D18/0009
Inventors
王聪; 范永刚