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Composite base layer material for diamond grindstone

A diamond and grinding stone technology is applied in the field of diamond grinding tools to achieve the effects of reducing manufacturing costs, ensuring product quality and improving yield

Inactive Publication Date: 2008-12-24
ZHONGYUAN ENGINEERING COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to overcome the problems existing in the existing diamond grinding stones and propose a composite base material for diamond grinding stones that can effectively prevent the diamond grinding stones from bending deformation, cracks or delamination waste products

Method used

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  • Composite base layer material for diamond grindstone
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Embodiment 1: the composite base material of diamond grinding stone comprises each raw material and filler of following weight gram: 50 kilograms of Cu, 5 kilograms of Sn, 5 kilograms of Fe, 5 kilograms of Ni, 5 kilograms of WC, corundum (Al 2 o 3 ) 5 kg.

[0023] Formulate the formula of the composite base material of the diamond grinding stone according to the above-mentioned scheme, and make the diamond grinding stone according to the following procedures:

[0024] Batching (the diamond layer and the bottom layer are weighed according to the formula) → mixing (the diamond layer and the bottom layer are mixed separately) → the substrate layer is molded, fed, cold pre-pressed → the working layer is molded, fed, cold pre-pressed → hot pressed Sintering (hot pressing and sintering on a hot pressing sintering machine at the same time) → cooling → unloading → post-processing → product inspection.

[0025] On the basis of the test, further production verification and user...

Embodiment 2

[0026] Embodiment 2: the composite base material of diamond grinding stone comprises each raw material and filler of following weight gram: 70 kilograms of Cu, 15 kilograms of Sn, 15 kilograms of Fe, 10 kilograms of Ni, 15 kilograms of WC, 25 kilograms of silicon carbide (SiC) .

[0027] Formulate the formula of the composite bottom material of the diamond grinding stone according to the above scheme, and make the diamond grinding stone according to the following procedures: batching (the diamond layer and the bottom layer are weighed according to the formula) → mixing (the diamond layer and the bottom layer are mixed separately) → lining Bottom layer mold loading, feeding, cold pre-pressing → working layer mold loading, feeding, cold pre-pressing → hot pressing sintering (hot pressing and sintering are performed simultaneously on the hot pressing sintering machine) → cooling → mold unloading → post-processing → product inspection. On the basis of the test, further production ...

Embodiment 3

[0028] Embodiment 3: the composite bottom layer material of diamond grinding stone comprises each raw material and filler of following weight gram: 60 kilograms of Cu, 10 kilograms of Sn, 10 kilograms of Fe, 8 kilograms of Ni, 10 kilograms of WC, 20 kilograms of low-grade diamonds.

[0029] Formulate the formula of the composite bottom material of the diamond grinding stone according to the above scheme, and make the diamond grinding stone according to the following procedures: batching (the diamond layer and the bottom layer are weighed according to the formula) → mixing (the diamond layer and the bottom layer are mixed separately) → lining Bottom layer mold loading, feeding, cold pre-pressing → working layer mold loading, feeding, cold pre-pressing → hot pressing sintering (hot pressing and sintering are performed simultaneously on the hot pressing sintering machine) → cooling → mold unloading → post-processing → product inspection. On the basis of the test, further productio...

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Abstract

The composite base layer material for diamond grindstone consists of Cu 50-70 weight portions, Sn 5-15 weight portions, Fe 5-15 weight portions, Ni 5-10 weight portions, WC 5-15 weight portions, and filler of Al2O3, SiC or low-grade diamond 5-25 weight portions. The diamond grindstone with the composite base layer material has base layer with linear expansion coefficient near to that of diamond, and this can avoid bending deformation, cracking and delaminating in high temperature sintering, raise product quality and lower production cost.

Description

technical field [0001] The invention belongs to the technical field of diamond grinding tools, and relates to a diamond grinding stone, in particular to a diamond grinding stone composite bottom material which improves the diamond grinding stone bottom material. Background technique [0002] The existing bottom layer of diamond grinding stone is a mixture of various metal powders, and its composition and proportion are the same or similar to those of the metal powder in the diamond layer. [0003] The problem with this kind of diamond grinding stone is that the expansion coefficients of the bottom layer and the diamond layer are inconsistent, and the difference between the metal and the diamond linear expansion coefficient is 10 to 20 times. After sintering at high temperature, the size of the bottom layer shrinks greatly, while the shrinkage of the diamond layer is small. Therefore, it is easy to cause the following three waste products: [0004] ① The grinding stone is be...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B24D3/10
Inventor 王秦生
Owner ZHONGYUAN ENGINEERING COLLEGE