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Composite multi-layer diamond tool bit and preparation method thereof

A diamond cutter head, diamond technology, applied in metal sawing equipment, metal processing equipment, stone processing equipment and other directions, can solve the problem of uneven force on the diamond layer, occupying a lot of costs, etc., to achieve fast cutting speed, reduce Tool cost, stable performance

Active Publication Date: 2018-10-16
JIANGSU FENGTAI TOOLS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to improve the cutting efficiency, sandwich and multi-sandwich structure cutter heads have been developed in the prior art. Compared with ordinary block cutter heads, this kind of cutter head has increased the free surface of brittle hard non-metallic materials such as stone to be sawed, so that It is easier to break the stone, which improves the sharpness of sawing, thereby improving the cutting efficiency, and at the same time reduces the power consumption and lowers the cost of sawing. Due to the unbalanced force on the center and outer diamond layers, the cutting stability needs to be improved, and for the stone cutting process, the consumption of diamond saw blades occupies more costs, so it is also necessary to further improve the use of diamond saw blades life

Method used

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  • Composite multi-layer diamond tool bit and preparation method thereof
  • Composite multi-layer diamond tool bit and preparation method thereof
  • Composite multi-layer diamond tool bit and preparation method thereof

Examples

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preparation example Construction

[0031] In the present invention, the preparation method of the composite multilayer diamond cutter head comprises the following steps:

[0032](1) According to the ratio, the diamond particles and the matrix powder are evenly mixed and cold-pressed into a diamond green layer in the middle and diamond green layers on both sides;

[0033] (2) cold pressing the bronze powder to form a metal blank layer;

[0034] (3) The diamond blank layer in the middle, the diamond blank layer and the metal blank layer on both sides are formed into a laminated structure according to the order;

[0035] (4) Carry out hot-press sintering on the laminated structure, the temperature of hot-press sintering is 725-800°C, and the pressure is 250-300kg / cm 2 , The holding time is 150-250 seconds.

[0036] In the examples and comparative examples of the present invention, the particle size of the diamond particles used is 50 / 60 (the corresponding particle size is 300-250 μm).

[0037] In the embodiment...

Embodiment 1

[0041] Put 3.0kg of bronze powder, 0.3kg of tin powder, 0.01kg of graphite powder and 6.64kg of pre-alloyed powder into the mixing tank and mix for 30 minutes, then add 0.05kg of liquid paraffin and 0.35kg of diamond particles, continue After 3 hours of mixing, the powder is poured into the mold and cold-pressed to obtain the diamond blank layer in the middle;

[0042] Take 1.0kg of bronze powder, 0.3kg of tin powder and 8.65kg of pre-alloyed powder and mix them in the mixing tank for 30 minutes, then add 0.05kg of liquid paraffin and 0.30kg of diamond particles, and continue mixing for 3 hours. The powder is poured into the mold and cold-pressed to obtain the diamond blank layer on both sides;

[0043] Pour the bronze powder into the mold and cold press to form the metal blank layer;

[0044] The above-mentioned diamond blank layer and the metal binder blank layer are arranged at intervals to form a laminated structure (3 layers of diamond blank layers and 2 layers of metal ...

Embodiment 2

[0046] Put 4.0kg of bronze powder, 0.4kg of tin powder, 0.01kg of graphite powder and 5.55kg of pre-alloyed powder into the mixing tank and mix for 30 minutes, then add 0.04kg of liquid paraffin and 0.30kg of diamond particles, continue After 3 hours of mixing, the powder is poured into the mold and cold-pressed to obtain the diamond blank layer in the middle;

[0047] Put 1.5kg of bronze powder, 0.5kg of tin powder and 7.95kg of pre-alloyed powder into the mixing tank and mix for 30 minutes, then add 0.05kg of liquid paraffin and 0.30kg of diamond particles, and continue mixing for 3 hours. The powder is poured into the mold and cold-pressed to obtain the diamond blank layer on both sides;

[0048] Pour the bronze powder into the mold and cold press to form the metal blank layer;

[0049] The above-mentioned diamond green layer and the metal binder green layer are arranged at intervals to form a laminated structure (3 layers of diamond green layers and 2 layers of metal bind...

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Abstract

The invention relates to a composite multi-layer diamond tool bit and belongs to the technical field of diamond sintering tools. The composite multi-layer diamond tool bit comprises a plurality of diamond cutting layers. The adjacent diamond cutting layers are bonded through metal layers. Each diamond cutting layer is composed of a carcass and diamond particles impregnated in the carcass. The concentration of the diamond particles in the diamond cutting layer located in the middle is greater than those of diamond particles in the diamond cutting layers located on the two sides. The hardness ofthe carcass in the diamond cutting layer located in the middle is smaller than those of the carcasses in the diamond cutting layers located on the two sides. The composite multi-layer diamond tool bit is used for a diamond saw blade and applied to processing of stone materials such as granite and marble and cutting of concrete pavements, the cutting speed is high, the cutting sharpness is high, the performance is stable, energy consumption can be reduced easily, in addition, used diamond is small and does not contain the elements including the Co element and the like, and the tool cost can belowered easily.

Description

technical field [0001] The invention relates to the technical field of diamond sintered tools, more specifically, the invention relates to a composite multilayer diamond cutter head and a preparation method thereof. Background technique [0002] Since the United States G.E. Company began to synthesize artificial diamonds in 1953, the types and specifications of diamond tools used by humans have been greatly developed. Since my country successfully synthesized artificial diamonds in 1963, my country's diamond tools have experienced from scratch, from small to large. , from decentralized to intensive, from product to industry development path. In terms of diamond tools for processing hard and brittle non-metallic materials, my country has become a major producer in the world. Diamond saw blades, diamond drill bits and diamond grinding wheels are the three main varieties of diamond tools. Among them, diamond saw blades are the leading products in diamond tools. According to sta...

Claims

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Application Information

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IPC IPC(8): B28D1/04B23D61/02
CPCB23D61/028B28D1/04
Inventor 邱瑜铭方利灵董先龙
Owner JIANGSU FENGTAI TOOLS
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