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Diamond abrasive tool head and preparation method thereof

A technology of diamond and diamond particles, used in metal processing equipment, grinding/polishing equipment, abrasives, etc., can solve problems such as failure to meet construction requirements, increase labor costs, increase abrasive tool consumption, etc., achieve good sharpness, reduce Surface flatness, the effect of reducing surface roughness

Active Publication Date: 2022-03-11
江苏友美工具有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the processing of concrete and other road surfaces, in order to ensure the grinding efficiency, diamond particles with a particle size of 45 / 50~100 / 120 mesh are usually selected. When grinding the pavement, especially the concrete pavement with high surface roughness and flatness requirements, rework and rework often occur because the construction requirements cannot be met, resulting in low construction efficiency, which not only increases the consumption of abrasive tools, but also Significantly increased labor costs

Method used

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  • Diamond abrasive tool head and preparation method thereof
  • Diamond abrasive tool head and preparation method thereof

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preparation example Construction

[0025] In the present invention, the abrasive tool head is formed by cold-pressing and hot-pressing sintering from a mixed powder composed of a metal bond containing tungsten carbide, diamond particles, graphite particles and metal halide additives. As an example, the preparation method may include the following steps: (1) preparing a metal bond comprising tungsten carbide, diamond particles, graphite particles and metal halide additives, and mixing to obtain a mixed powder; (2) mixing the mixed powder in Cold pressing in the mold to obtain the cutter head body; (3) hot pressing and sintering the cutter head body, the hot pressing sintering temperature is 780-850°C, and the pressure is 200-300kg / cm 2 , and the hot-press sintering was carried out in an oxygen-poor atmosphere. The oxygen-depleted atmosphere refers to an atmosphere containing 1-20v% air and the rest nitrogen. Hot press sintering is carried out in an oxygen-poor atmosphere. On the one hand, part of the graphite p...

Embodiment 1

[0031]Take 3.2kg of copper powder, 3.2kg of iron, 0.8kg of nickel, 2kg of tungsten carbide, and 0.8kg of tin, put them into the mixing tank and mix for 30 minutes, then add 0.08kg of graphite particles, CoCl 2 0.02kg, diamond 0.15kg, continue mixing for 2 hours, pour the powder into the mold for cold pressing, hot pressing sintering, hot pressing sintering temperature is 850°C, pressure 220kg / cm 2 , the holding time is 5 minutes, the sintering atmosphere includes 10v% air, and the balance is N 2 .

Embodiment 2

[0033] Take 2.5kg of copper powder, 4.1kg of iron, 1.5kg of nickel, 1.5kg of tungsten carbide, and 0.4kg of tin, put them into the mixing tank and mix for 30 minutes, then add 0.08kg of graphite particles, LaF 3 0.03kg, diamond 0.15kg, continue mixing for 2 hours, pour the powder into the mold for cold pressing, hot pressing sintering, hot pressing sintering temperature is 850°C, pressure 220kg / cm 2 , the holding time is 5 minutes, the sintering atmosphere includes 20v% air, and the balance is N 2 .

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Abstract

The invention relates to a diamond abrasive tool head and a preparation method thereof, belonging to the technical field of diamond tools. The horizontal projection of the diamond abrasive cutter head of the present invention is an arc shape surrounded by concentric outer arc edges, inner arc edges, and two sides connecting said outer arc edges and inner arc edges, And the two sides are parallel to each other; the central angle of the outer arc edge and the inner arc edge is ≤20°, and the abrasive tool head is made of metal bond containing tungsten carbide, diamond particles, graphite particles and metal halide additives The mixed powder is formed by cold pressing and sintering. The diamond grinding tool head of the present invention not only has good sharpness and good stability under the condition of high-speed rotary grinding, but also can significantly improve the quality of grinding, and is beneficial to reduce surface roughness and surface flatness.

Description

technical field [0001] The invention relates to the technical field of diamond tools, and more specifically, the invention relates to a diamond abrasive tool head and a preparation method thereof. Background technique [0002] Diamond abrasive tools are a general term for abrasive products that use diamond particles as abrasive grains and bond them with various binders (mainly including metals, ceramics, and resins) to form abrasive products with a certain geometric shape. Diamond grinding tools can efficiently grind various processing materials such as cemented carbide, glass, ceramics, concrete, stone, etc., and the grinding tools have the longest service life. In recent decades, with the development of "high, precise and sharp" technology, the processing requirements for abrasive tools have become more and more stringent. Subsequently, diamond molds have also been widely developed and applied, not only in difficult The field of processing materials has achieved an irrepl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B24D3/10B24D3/34B24D18/00
CPCB24D3/10B24D3/342B24D3/346B24D18/0009
Inventor 万益俊
Owner 江苏友美工具有限公司
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