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Brazing active solder for diamond abrasive products

A technology of active brazing material and diamond, which is applied in the direction of welding/cutting medium/material, welding medium, manufacturing tools, etc., can solve the problems of unfavorable use of diamond tools, alloy brittleness, etc., and achieve good plasticity of brazing material, high holding force, high intensity effect

Inactive Publication Date: 2019-03-15
ZHENGZHOU RES INST OF MECHANICAL ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, copper-based solders mainly include copper-tin-titanium solder, copper-zinc solder, etc., but the addition of tin will make the alloy brittle, which is not conducive to the use of diamond tools

Method used

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  • Brazing active solder for diamond abrasive products

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The active solder alloy of this embodiment is composed of the following components in mass percentage: 66% copper, 18% zinc, 7.5% titanium, 4% manganese, 2.5% silicon, 1.5% chromium, and 0.5% zirconium.

[0028] The preparation method of brazing active solder is as follows: add the raw materials to the bottom of the water-cooled crucible of the vacuum arc melting furnace, pulse arc melting, and the vacuum degree is 2.5x10 -3 Pa, electrode current is 190A, each smelting time is 3min, after being cooled to room temperature, carry out next smelting, repeated smelting 5 times until ingot composition is uniform, the preparation method of described a kind of diamond grinding tool brazing active solder , The environment in the furnace chamber of the vacuum arc melting furnace is protected by pure argon.

[0029] The active solder alloy of this embodiment can obtain a complete liquid phase below 810°C; in the characterization of the active solder of the present invention, it is...

Embodiment 2

[0032] The active solder alloy of this embodiment is composed of the following components in mass percentage: 66% copper, 18% zinc, 7.5% titanium, 4% manganese, 2.5% silicon, 1.5% chromium, and 0.5% zirconium.

[0033] The preparation method of brazing active solder, the specific process includes the following steps: adding raw materials to the bottom of the water-cooled crucible of a vacuum arc melting furnace, pulse arc melting, and the vacuum degree is 5x10 -3 Pa, the electrode current is 220A, each smelting time is 5min, after being cooled to room temperature, the next smelting is carried out, and the smelting is repeated 7 times until the ingot composition is uniform, the preparation method of the brazing active solder for a kind of diamond abrasive tool , The environment in the furnace chamber of the vacuum arc melting furnace is protected by pure argon.

[0034] The active solder alloy of this embodiment can obtain a complete liquid phase below 800° C.; the shear streng...

Embodiment 3

[0036] The active solder alloy of this embodiment is composed of the following components in mass percentage: 72% copper, 15% zinc, 6% titanium, 3% manganese, 2% silicon, 1.5% chromium, and 0.5% zirconium.

[0037] The preparation method of active solder, the specific process is: adding the raw materials to the bottom of the water-cooled crucible of the vacuum arc melting furnace, pulse arc melting, and the vacuum degree is 3x10 -3 Pa, electrode current is 200A, each smelting time is 4min, after being cooled to room temperature, carry out next smelting, repeated smelting 5 times until ingot composition is uniform, the preparation method of described a kind of diamond grinding tool brazing active solder , The environment in the furnace chamber of the vacuum arc melting furnace is protected by pure argon.

[0038] The active solder alloy of this embodiment can obtain a complete liquid phase below 820° C.; the shear strength of the active solder brazed graphite / No. 45 steel joint...

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Abstract

The invention provides brazing active solder for diamond abrasive products. The active solder alloy is prepared from the following components, by mass: 60% to 72% of copper, 15% to 21% of zinc, 6% to9% of titanium, 2% to 6% of manganese, 2% to 3% of silicon, 1% to 2% of chromium, and 0.3% to 0.7% of zirconium. The specific process includes the steps of adding raw materials to the bottom of a water-cooled crucible of a vacuum arc melting furnace for pulsed arc melting with the electrode current being 190-220A; cooling the raw materials to room temperature for next smelting; and smelting the raw materials four to seven times until the composition of an ingot is uniform. The active solder alloy is prepared by adding manganese, silicon, chromium and zirconium on the basis of copper-zinc-titanium active solder, the obtained solder alloy has high strength and low melting point, and the complete liquid phase can be obtained at 800 DEG C. When brazing, a diamond and a matrix form a strong metallurgical bond, and the bonding strength is high. The joint shearing strength of graphite / 45# steel brazed by using the active solder can reach 360 MPa.

Description

technical field [0001] The invention belongs to the technical field of brazing materials, and in particular relates to a brazing active brazing material for diamond grinding tools. Background technique [0002] Traditional diamond tool matrix materials have low wrapping force on diamonds, making it difficult for diamonds to be sharpened or easy to fall off. [0003] With the development of the material industry, the requirements for the performance of diamond tools are getting higher and higher. However, there are still many difficulties in the welding of diamond tools, such as: general metals and alloys are difficult to wet on the surface; the linear expansion coefficient of diamond is lower than that of general metals Material, easy to form thermal stress; diamond carbonization occurs at high temperature, and its brazing temperature is limited. [0004] For this reason, brazing technology has been applied to the production of diamond tools. Scholars at home and abroad hav...

Claims

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Application Information

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IPC IPC(8): B23K35/30
CPCB23K35/0222B23K35/302
Inventor 钟素娟龙伟民赵月纠永涛吴铭方宋克兴刘建秀王裕昌
Owner ZHENGZHOU RES INST OF MECHANICAL ENG CO LTD