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A kind of composite material of high-entropy alloy holding abrasive particles and its preparation method and application

A high-entropy alloy and abrasive particle technology, applied in the application field of high-entropy alloy, can solve the problems of high energy consumption, labor-intensive graphite mold, easy oxidation loss, unsuitable high-entropy alloy powder sintering and diamond matrix damage, etc., to achieve good Application Prospect, Irregular Particle Shape, Effect of Simplified Components

Active Publication Date: 2019-06-28
江西咏泰粉末冶金有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the main problem of diamond saw blades is that during the cutting process, the diamond particles in the cutter head are severely impacted, and part of the carcass surrounded by diamonds is destroyed, causing the diamond abrasive particles to fall off and lose the cutting effect.
Hot pressing is only suitable for sintering samples with regular shapes. Although it has many advantages such as simple operation method, low cost, and mass production with low investment, it cannot avoid its high energy consumption, labor-intensive, and graphite molds. Fatal shortcomings such as oxidation loss, so it is usually used in low-end integral sintered saw blades, not suitable for sintering of high-entropy alloy powder

Method used

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  • A kind of composite material of high-entropy alloy holding abrasive particles and its preparation method and application
  • A kind of composite material of high-entropy alloy holding abrasive particles and its preparation method and application
  • A kind of composite material of high-entropy alloy holding abrasive particles and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Preparation of FeCoCrNiCuMo Wrapped with Diamond with 5% Mass Ratio 0.1 High-entropy alloy cutter head: 1) Preparation of FeCoCrNiCuMo 0.1 High-entropy alloy formula powder, the raw materials are high-purity Fe, high-purity Co, high-purity Cr, high-purity Ni, high-purity Cu and high-purity Mo and other bulk metal materials, Fe, Co, Cr, Ni, Cu and Mo The atomic percentage is 1:1:1:1:1:0.1; it melts into a melt at 1500°C, and the melt is atomized and solidified quickly under a pressure of 2MPa. After sieving, 45-75um high-entropy alloy powder and alloy powder are obtained. Activation treatment was performed by ball milling for 10 hours at a ball-to-material ratio of 10:1 and a rotational speed of 200r / min. 2) Weigh the high-entropy alloy powder and diamond abrasive grains (the grain size of the abrasive grains is 100 microns) according to the mass ratio of 95:5, mix them evenly, and then sinter them in a spark plasma sintering furnace at a sintering temperature of T 1 =...

Embodiment 2

[0053] Preparation of FeCoCrNiCuMo Wrapped with 2% Diamond by Mass Ratio 0.1 High-entropy alloy cutter head: 1) Preparation of FeCoCrNiCuMo 0.1 High-entropy alloy formula powder, the raw materials are high-purity Fe, high-purity Co, high-purity Cr, high-purity Ni, high-purity Cu and high-purity Mo and other bulk metal materials, Fe, Co, Cr, Ni, Cu and Mo The atomic percentage is 1:1:1:1:1:0.1; it melts into a melt at 1500°C, and the melt is atomized and solidified rapidly under a pressure of 2.2MPa. After sieving, 45-75um high-entropy alloy powder, alloy The powder was activated by ball milling for 10h at a ball-to-material ratio of 10:1 and a rotational speed of 200r / min. 2) Weigh the high-entropy alloy powder and diamond abrasive grains (the grain size of the abrasive grains is 100 microns) according to the mass ratio of 98:2, mix them evenly, and then sinter them in a spark plasma sintering furnace at a sintering temperature of T1=900°C , the heating rate is v1=60°C / min, ...

Embodiment 3

[0055] Preparation of FeCoCrNiCuMo with Diamond Surrounding with 8% Mass Ratio 0.1 High-entropy alloy cutter head: 1) Preparation of FeCoCrNiCuMo 0.1 High-entropy alloy formula powder, the raw materials are high-purity Fe, high-purity Co, high-purity Cr, high-purity Ni, high-purity Cu and high-purity Mo and other bulk metal materials, Fe, Co, Cr, Ni, Cu and Mo The atomic percentage is 1:1:1:1:1:0.1; it melts into a melt at 1500°C, and the melt is atomized and rapidly solidified under a pressure of 2.1MPa. After sieving, 45-75um high-entropy alloy powder, alloy The powder was activated by ball milling for 10h at a ball-to-material ratio of 10:1 and a rotational speed of 200r / min. 2) Weigh the high-entropy alloy powder and diamond abrasive grains (the grain size of the abrasive grains is 100 microns) according to the mass ratio of 92:8, mix them evenly, and then sinter them in a spark plasma sintering furnace at a sintering temperature of T1=850°C , the heating rate is v1=60°C...

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Abstract

The invention relates to a composite material of a high-entropy alloy holding abrasive particle as well as a preparation method and application thereof, and belongs to the technical field of high-entropy alloy application. The high-entropy alloy holds the abrasive particle in a tyre body form. The high-entropy alloy is prepared from the following ingredients through being metered by atomic percentage: 10 to 30 percent of Fe, 10 to 30 percent of Co, 10 to 30 percent of Cr, 10 to 30 percent of Ni, 10 to 30 percent of Cu and 0 to 8 percent of Mo. The preparation method is characterized in that after the high-entropy alloy raw material powder is prepared and taken according to the designed ingredients, high-entropy alloy powder is prepared by a gas atomization method and a mechanical alloyingmethod; then, a SPS process is combined; the composite material with excellent performance is obtained. The composite material is particularly suitable for being used for manufacturing a cutter head.The high-entropy alloy is used as a tyre body for holding abrasive particles for the first time; the ingredient design is reasonable; the preparation process is scientific and controllable; the performance of the product is excellent; the large-scale industrial application is convenient.

Description

technical field [0001] The invention relates to a composite material of high-entropy alloy holding abrasive grains, a preparation method and application thereof, and belongs to the technical field of high-entropy alloy application. Background technique [0002] Diamond saw blade has the characteristics of high hardness and good wear resistance. It is the most widely used product among all kinds of diamond tool products. It is widely used in cutting stone, refractory materials, ceramics, concrete and glass. At present, the main problem of diamond saw blades is that during the cutting process, the diamond particles in the cutter head are severely impacted, and part of the carcass surrounded by diamonds is destroyed, causing the diamond abrasive particles to fall off and lose the cutting effect. Especially in high-friction and high-temperature environments, the performance of existing diamond saw blades is drastically reduced due to high temperature, resulting in shortened serv...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C30/02C22C26/00C22C1/05C22C1/10
CPCC22C1/05C22C26/00C22C30/02
Inventor 张伟刘咏张明阳刘彬王京师
Owner 江西咏泰粉末冶金有限公司
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