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Superhard grinding tool and manufacturing method thereof

A technology for superhard abrasive tools and abrasive tools, applied in grinding/polishing equipment, abrasives, grinding devices, etc., can solve the problems of complex process, high cost, high pollution, etc., and achieve simple process, low cost and good performance. Effect

Inactive Publication Date: 2015-08-19
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these manufacturing processes are either highly polluting, or require equipment such as hot pressing, high vacuum or high-purity gas protection, and the process is complex, costly, and energy-consuming;

Method used

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  • Superhard grinding tool and manufacturing method thereof
  • Superhard grinding tool and manufacturing method thereof
  • Superhard grinding tool and manufacturing method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0030] A kind of superhard abrasive tool, the raw material component of this superhard abrasive tool comprises binding agent and abrasive material, and described binding agent comprises Ni, Al, Cu, Ni-Cr alloy powder, wherein said Ni, Al are by molar ratio 3: 1 ratio, and its parts by weight are 20 parts in total, the parts by weight of Cu powder are 8 parts by weight, the parts by weight of Ni-Cr alloy powder are 60 parts, the abrasive is diamond, the concentration is 100%, and the particle size is 30 / 40 head.

[0031] A preparation method for a superhard abrasive tool, comprising the steps of:

[0032] Step (1), weighing the Ni, Al, Cu, Ni-Cr alloy powders of the above-mentioned components according to the proportion, and then putting them into a ball mill and fully mixing them to obtain abrasive tool bond powder, wherein the speed of the ball mill is 150r / min, the ball milling time is 3 hours, the ball-to-material ratio is 5:1, the total volume of balls and raw materials ...

Embodiment 2

[0037] A kind of superhard abrasive tool, the raw material component of this superhard abrasive tool comprises binding agent and abrasive material, and described binding agent comprises Ni, Al, Cu, Ni-Cr alloy powder, wherein said Ni, Al are by molar ratio 3: 1 ratio, and its parts by weight are 55 parts in total, the parts by weight of Cu powder are 12 parts by weight, the parts by weight of Ni-Cr alloy powder are 30 parts, the abrasive is diamond, the concentration is 50%, and the particle size is 50 / 60 head.

[0038] A preparation method for a superhard abrasive tool, comprising the steps of:

[0039] Step (1), weighing the Ni, Al, Cu, Ni-Cr alloy powders of the above-mentioned components according to the proportion, and then putting them into a ball mill and fully mixing them to obtain abrasive tool bond powder, wherein the speed of the ball mill is 170r / min, the ball milling time is 3.5h, the ball-to-material ratio is 6.5:1, and the total volume of balls and raw materia...

Embodiment 3

[0044]A kind of superhard abrasive tool, the raw material component of this superhard abrasive tool comprises binding agent and abrasive material, and described binding agent comprises Ni, Al, Cu, Ni-Cr alloy powder, wherein said Ni, Al are by molar ratio 3: 1 ratio, and its parts by weight are 41 parts in total, the parts by weight of Cu powder are 14 parts by weight, the parts by weight of Ni-Cr alloy powder are 38 parts, the abrasive is diamond, the concentration is 75%, and the particle size is 80 / 100 head.

[0045] A preparation method for a superhard abrasive tool, comprising the steps of:

[0046] Step (1), weighing the Ni, Al, Cu, Ni-Cr alloy powders of the above-mentioned components according to the proportion, and then putting them into a ball mill and fully mixing them to obtain abrasive tool bond powder, wherein the speed of the ball mill is 200r / min, the ball milling time is 4.5h, the ball-to-material ratio is 7.5:1, and the total volume of balls and raw materia...

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Abstract

The invention discloses a superhard grinding tool which is composed of a binding agent and a grinding material. The binding agent comprises, by weight, 20-60 parts of Ni, Al, 8-50 parts of Cu and 20-60 parts of Ni-Cr alloy powder, wherein Ni and Al are proportioned according to a molar ratio of 3:1 or 1:1, and the grinding material is diamond which is 40-100% in concentration and 30 / 40-325-400 meshes in granularity. In addition, the invention further discloses a manufacturing method for the superhard grinding tool. The binding agent and the grinding material namely the diamond are taken as raw materials, the superhard grinding tool is manufactured through a method of compositing self-propagating and soldering, thereby being high in binding strength, good in performance, low in cost and small in thermal damage to diamond, high-speed and long-time grinding can be realized, needs on machining are met, and the superhard grinding tool has the advantages of high binding resistance, high hardness, grinding resistance, high sharpness and long service life. The manufacturing method has the advantages of simple process, pollution freeness, low energy consumption, quickness and low cost.

Description

technical field [0001] The invention relates to the technical field of abrasive tools, in particular to a superhard abrasive tool and a preparation method thereof. Background technique [0002] Electroplating and sintering are the traditional manufacturing methods of superabrasive tools. Due to the bonding strength between superabrasives and the substrate and the low cutting edge of diamonds, the service efficiency and life of these two tools are limited. Brazed tools have received extensive attention in recent years due to their high abrasive edge removal and high bond strength. During the brazing process, the solder alloy melts and the capillary action makes the alloy tightly wrap the diamond, and at the same time forms a strong chemical bond between the diamond and the solder alloy, which greatly improves the bonding strength of the diamond and the edge height of the diamond, thereby improving the tool. Cutting performance and self-sharpening, especially suitable for hig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24D18/00B24D3/10B24D3/34B22F3/16B22F3/23C22C19/05C22C30/02
CPCB24D3/10B22F3/16B22F3/23B24D3/34B24D18/0009C22C19/05C22C30/02
Inventor 张凤林周玉梅王成勇
Owner GUANGDONG UNIV OF TECH
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