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Diamond tool bit and preparation method thereof

A diamond cutter head and diamond technology, applied in the field of materials, can solve the problems of high production cost, high energy consumption, and long sintering time

Active Publication Date: 2021-04-30
GUANGDONG NADE NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present invention provides a method for preparing a diamond segment, which aims to solve the problems of long sintering time, high energy consumption, poor density of sintered products, low product utilization rate and low production efficiency in the existing diamond segment preparation method. high cost problem

Method used

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  • Diamond tool bit and preparation method thereof
  • Diamond tool bit and preparation method thereof
  • Diamond tool bit and preparation method thereof

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preparation example Construction

[0011] The preparation method of the diamond segment provided by the embodiment of the present invention adopts the method of discharge plasma sintering for sintering, the sintering time is short, the heating is uniform, the temperature field is relatively small, and the energy consumption is low, which can inhibit the grain coarsening and prevent the secondary heavy Crystallization, the structure is fine and uniform, can maintain the natural state of the raw material, can greatly improve the holding force of the metal bond on the diamond, and improve the sharpness, wear resistance and density of the diamond cutter head, and can maintain the quality of mass production Product quality stability. Compared with the traditional hot-pressing sintering process, its efficiency is increased by at least 50%, energy consumption is reduced by more than 80%, and it does not produce waste gas and waste residue, which is environmentally friendly, and can reduce labor intensity and save produ...

Embodiment 1

[0026] The diamond cutter bit of the present embodiment is prepared by the following steps:

[0027] Put the atomized iron-copper-nickel alloy powder (350 mesh), electrolytic copper powder (450 mesh), tin powder (150 mesh) and tungsten carbide (2800 mesh) according to the mass ratio of 30:20:8:10 Put it into a planetary ball mill, and at a rotating speed of 150r / min, the reverse frequency is 20Hz, continuous ball milling for 15min, and then sealing and vacuumizing for 20min to obtain a premix; after taking out the premix, put it into a three-dimensional mixer, Add diamond and mix for 2 hours to get mixed powder (the mass ratio of diamond, atomized iron-copper-nickel alloy powder, electrolytic copper powder, tin powder and tungsten carbide in the system is 3:30:20:8:10) Put the mixed powder into a graphite mold, place it in a discharge plasma sintering machine, fill it with an inert gas after vacuuming, and carry out sintering treatment at a temperature of 850°C and a pressure ...

Embodiment 2

[0029]Put the atomized iron-copper-nickel alloy powder (400 mesh), electrolytic copper powder (500 mesh), tin powder (200 mesh) and tungsten carbide (3000 mesh) according to the mass ratio of 40:25:10:15 Put it into a planetary ball mill, at a rotating speed of 250r / min, a reverse frequency of 25Hz, continue ball milling for 20min, and then seal and vacuumize for 30min to obtain a premix; after taking out the premix, put it into a three-dimensional mixer, Add diamond and mix for 3 hours to obtain mixed powder (the mass ratio of diamond, atomized iron-copper-nickel alloy powder, electrolytic copper powder, tin powder and tungsten carbide in the system is 5:40:25:10:15) ; Put the mixed powder into a graphite mold, then place it in a discharge plasma sintering machine, fill it with inert gas after vacuuming, and carry out sintering treatment at a temperature of 800°C and a pressure of 35MPa for 3 minutes, and then keep warm 2min, take it out and grind it after cooling to get the ...

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Abstract

The invention is applicable to the technical field of materials, and provides a diamond tool bit and a preparation method thereof. The method comprises the following steps of mixing diamond, atomized iron-copper-nickel alloy powder, electrolytic copper powder, tin powder and tungsten carbide according to a specific proportion, weighing according to the specification, putting into a graphite jig, then putting into a discharge plasma sintering machine, conducting vacuuming, introducing inert gas, conducting low-temperature sintering treatment for 2-3 minutes under the conditions that the temperature is 800-850 DEG C and the pressure is 30-40 MPa, taking out, cooling, and polishing to obtain the diamond tool bit with high density and better mechanical property and saw cutting property. The whole technological process is easy to operate, low in energy consumption, environmentally friendly and high in efficiency, the labor intensity of workers can be greatly reduced, and the production cost of enterprises is saved.

Description

technical field [0001] The invention belongs to the technical field of materials, and in particular relates to a diamond cutter head and a preparation method thereof. Background technique [0002] The diamond segment is the working body of the diamond saw blade. At present, most diamond segments are prepared by hot pressing and sintering, specifically by direct resistance heating equipment and graphite molds. However, this sintering method not only has long sintering time at high temperature, uneven pressing force, and serious temperature field deviation, resulting in unstable quality of the produced diamond segment, but also high energy consumption, large smoke and dust, and poor environmental protection due to the open sintering method. The working environment for workers is not guaranteed. In addition, due to the long sintering time of traditional hot pressing sintering at high temperature, the metal grains grow rapidly, which seriously affects its proper performance. A...

Claims

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Application Information

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IPC IPC(8): B22F5/00B22F1/00B22F3/14B22F3/24
CPCB22F1/0003B22F5/00B22F3/14B22F3/24B22F2003/247B22F2005/001B22F2998/10B22F2202/13
Inventor 朱艺添姚灿卫
Owner GUANGDONG NADE NEW MATERIALS CO LTD
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