Technique for producing ultrathin diamond cutting slice of metal anchoring agent

A diamond cutting and metal bond technology, applied in metal processing equipment, manufacturing tools, bonding grinding wheels, etc., can solve the problems of insufficient strength, chipping, easy rupture of cutting blades, etc., and achieve stable cutting performance, easy control, and stability. The effect of cutting and binding properties

Inactive Publication Date: 2009-07-08
CHANGZHOU HUAZHONG GROUP
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Problems solved by technology

However, if the thickness is too thin, there is a problem of insufficient strength. For example, a cutting sheet with a thi...

Method used

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Embodiment Construction

[0008] A metal-bonded ultra-thin diamond cutting sheet manufacturing process is characterized in that it has the following steps: (1) selecting diamond to undergo surface metallization treatment; (2) selecting metal powder to undergo water-cooling fine grinding and ball milling; (3) processing (4) cold pressing; (5) hot pressing and sintering to make high-density thin slices; (6) clamping thin slices for grinding to make cutting pieces that meet the specifications.

[0009] Metal powders include cobalt powder, rare earth alloy powder and copper-tin alloy powder, the ratio of diamond to metal powder is 2-3% diamond, 70-75% cobalt powder, 5-7% rare earth alloy powder, 18-22 % copper-tin alloy powder. The cold pressure is 3Tf / cm 2 , the temperature of hot pressing is 750-800°C, and the pressure of hot pressing is 200kgf / cm 2 .

[0010] In the first step, the diamond surface is metallized by vacuum micro-evaporation titanium plating technology, which is a method of vacuum physi...

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Abstract

The present invention relates to the manufacturing field of hard brittle material, and especially to a technique for manufacturing an ultrathin diamond cutting slice of metal anchoring agent. The method comprises the following steps: selecting high-fundamental-grain diamond for executing surface metallization procession; precise-grinding and ball-milling the metal powder through water cooling; mixing the processed diamond and metal powder; cold pressing; hot pressing sintering to prepare thin sheet with high compactness degree; and finally clamping the thin sheet for grinding to prepare cutting slice with satisfied standard and dimension. According to the technique, the surface of diamond has stable cutting property and combination property after metallization procession. The metal powder is mechanically pre-alloyed through water cooling, precise-grinding and ball-milling and has stable performance. The high-strength and high-density cutting slice can be obtained through hot pressing sintering. The technique is easy and convenient for controlling. The cutting slice has stable cutting performance and long service lifetime.

Description

Technical field [0001] The invention relates to the field of processing hard and brittle materials, in particular to a manufacturing process of an ultra-thin diamond cutting sheet of a metal bond. Background technique [0002] Thin diamond cutting discs are used for cutting various semiconductor materials such as germanium, silicon, boron, gallium arsenide, cobalt phosphide, silicon carbide, etc., C-MOS green plate glass, phosphoric acid filter glass, quartz glass, optical glass, micro glass tube Etc glass, Al 2 o 3 , ZrO 2 、Si 3 N 4 、CatiO 3 , Ferrite and other ceramic materials and cutting of electronic packaging materials. The existing metal-bonded diamond cutting discs do not form mechanical pre-alloying, and their performance is unstable. The thickness of diamond slices is too thick, such as cutting slices with a thickness of more than 1mm, which can only be used for cutting building materials such as stone and concrete. However, if the thickness is too thin, th...

Claims

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Application Information

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IPC IPC(8): B24D18/00B24D3/06B24D5/12
Inventor 何昌耀
Owner CHANGZHOU HUAZHONG GROUP
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