Metallic bond, metallic bond diamond grinding wheel and manufacturing method of metallic bond diamond grinding wheel

A metal bond and diamond grinding wheel technology, applied in the field of diamond grinding wheels, can solve the problems of low tin powder hardness, poor product stability, and easy precipitation, etc., to improve stability, strength and hardness, and improve the strength and uniformity of grinding wheels Effect

Active Publication Date: 2022-07-01
江苏兴钻超硬材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the hardness of tin powder is low, and it is easy to precipit

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The metal binder in this embodiment is composed of the following components by mass percentage: copper powder 35%, tin powder 10%, babbitt alloy 5%, hydroxy iron powder 30%, copper fiber 15%, graphite particle 5%;

[0020] The preparation method of the metal bonding agent of the present embodiment is as follows: 320 mesh copper powder, 320 mesh tin powder, 320 mesh babbitt, 0.8um hydroxy iron powder, 0.1mm diameter and 1mm length copper fiber, 140 mesh graphite particles according to The above percentages are put into a vacuum ball mill for ball milling for 4h, and then sieved to obtain a metal bond;

Embodiment 2

[0022] The metal bond diamond grinding wheel of this embodiment includes metal bond and diamond. The percentage content of metal bond in the metal bond diamond grinding wheel is 87.2%, and the mass percentage content of diamond is 12.8%. The metal bonding agent is the metal bonding agent in Example 1, and the diamond is titanium-coated diamond.

[0023] The preparation method of the metal bond diamond grinding wheel of the present embodiment comprises the following steps:

[0024] Take the 120 mesh titanium-plated diamond of the formula amount and wet it with liquid paraffin, then add the metal bond of the formula amount, and mix it with a high-energy mixer for 4 hours to obtain a molding material;

[0025] The obtained molding material was sintered by vacuum hot pressing, the sintering temperature was 840°C, the pressure was 24MPa, and the holding time was 1.2h.

Embodiment 3

[0027] A metal bond in this embodiment is composed of the following components by mass percentage: 60% copper powder, 2% tin powder, 20% babbitt, 10% hydroxyl iron powder, 7% copper fiber, and 1 graphite particle %;

[0028] The preparation method of the metal bond in this embodiment is as follows: 300-mesh copper powder, 300-mesh tin powder, 300-mesh babbitt, 1um hydroxy iron powder, 0.15mm diameter and 2mm long copper fiber, and 120-mesh graphite particles as described above The percentage is put into a vacuum ball mill for ball milling for 3.5 hours, and then sieved to obtain a metal bond;

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Abstract

The invention relates to a metallic bond, a metallic bond diamond grinding wheel and a manufacturing method of the metallic bond diamond grinding wheel. The metallic bond is composed of, by mass, 35%-60% of copper powder, 2%-10% of tin powder, 5%-20% of babbitt metal, 10%-30% of hydroxyl iron powder, 3%-15% of red copper fibers and 1%-5% of graphite particles. According to the metal bonding agent, the metal bonding agent diamond grinding wheel and the manufacturing method of the metal bonding agent diamond grinding wheel, the tin-based babbitt metal is added into the metal bonding agent, the strength and hardness of the grinding wheel can be improved, almost no tin powder is separated out during high-temperature pressing, and the stability of the performance of the grinding wheel is greatly improved.

Description

technical field [0001] The invention relates to a metal bond, a metal bond diamond grinding wheel and a manufacturing method thereof, belonging to the technical field of diamond grinding wheels. Background technique [0002] Binder is a commonly used bonding material in superabrasives, including ceramic bond, metal bond, rhombohedral bond, resin bond, etc. Binder is one of the important structural components of superhard abrasive tools, and the performance of the binder has a decisive influence on the performance of the abrasive tool. Among them, the metal bond has the characteristics of large bonding ability, good fluidity, good forming effect and good thermal conductivity, and has been widely used in brittle materials and high-precision processing. However, metal binders have lower porosity due to their higher density. Therefore, when the metal bond is applied to the grinding wheel, the self-sharpening of the grinding wheel will be poor, and the amount of sticky chips wi...

Claims

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Application Information

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IPC IPC(8): B24D3/10B24D3/34B24D18/00B22F1/12C22C47/14C22C49/02C22C49/14B22F3/14B22F5/00C22C111/00
CPCB24D3/10B24D3/342B24D18/0009C22C47/14C22C49/02C22C49/14B22F3/14B22F5/00B22F2005/001
Inventor 徐文星徐欢
Owner 江苏兴钻超硬材料科技有限公司
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