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Method of laser brazing tool of monolayer diamond

A single-layer diamond and diamond tool technology, used in laser welding equipment, manufacturing tools, metal processing equipment, etc., can solve the problems of diamond graphitization, combustion, and large thermal deformation of the grinding wheel base, such as the brazing cycle, and achieve an increasing effect. The effect of distance, improving bonding strength, convenient and orderly arrangement

Active Publication Date: 2017-08-29
CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0005] However, when laser brazing diamond tools, the diamond is usually pre-set in the solder, and the laser scans the mixed layer of solder and diamond, which will lead to graphitization or even combustion of the diamond, which seriously affects the bonding strength between the brazing layer and the diamond.
Moreover, the diamond is pre-set in the solder, and the laser scans the solder and diamond mixed layer, which makes it difficult to achieve an orderly arrangement of diamond abrasive grains
[0006] The invention patent published on August 5, 2009, the publication number is "CN 101130213 A", and the invention title is "a method for manufacturing nickel-based solder laser brazing diamond abrasive grains" discloses a nickel-based solder The manufacturing method of laser brazing diamond abrasive grains solves the problem that the bonding force between diamond and brazing filler metal is small in brazing diamond tools, but the technical solution still has the following problems: the brazing filler metal on the diamond surface absorbs laser light during brazing, so that the brazing filler metal There are different forms of burnt oxidation and graphitization in diamond after welding; in addition, the diamond abrasive grains are not arranged in an orderly manner
[0007] On July 29, 2015, the publication number is "CN 102974910 B", and the invention patent titled "Diamond Grinding Wheel Induction Brazing Device and Brazing Method" discloses a diamond grinding wheel induction brazing device and brazing method. The problem of large thermal deformation of the grinding wheel substrate and the brazing cycle in the diamond tool brazing process is solved, but the technical solution still has the following problems: the design and manufacture of the induction coil of the special-shaped abrasive tool is complicated, and the diamond abrasive grains are not arranged in an orderly manner. question

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  • Method of laser brazing tool of monolayer diamond
  • Method of laser brazing tool of monolayer diamond
  • Method of laser brazing tool of monolayer diamond

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] figure 1 -3 is a schematic diagram of the first embodiment of the present invention.

[0058] The equipment involved in this embodiment includes a laser brazing system and an injection system 4.

[0059] The laser brazing system includes a laser generator (not shown) and a laser brazing working head 8 connected to each other.

[0060] Such as figure 1 As shown, the spray system 4 includes a hopper 401, a feeder 402, a negative pressure chamber 403, a vacuum generator 404, a conveying gas inlet 405, a conveying pipe 406, a spray gun 5, and an atomizing gas inlet 407. Start the feeder when working, the diamond grit 2 in the hopper 401 is input into the feeder 402, the conveying gas enters the vacuum generator 404 from the conveying gas inlet 405, so that negative pressure is generated in the negative pressure chamber 403 and sucked into the diamond grinder input by the feeder 402 At the same time, the diamond abrasive particles 2 are transported to the spray gun 5 through the c...

Embodiment 2

[0081] The following will be attached Figure 4-5 Another technical solution of the present invention will be described in detail.

[0082] The difference from the above-mentioned first embodiment is that in this embodiment, a rectangular spot 10 is used to scan the solder, and three spray guns for spraying diamond abrasive grains 2 are arranged to form a spray gun group. The laser brazing system cooperates with the numerical control device to control the spraying The time sequence can realize the orderly arrangement of the diamond abrasive grains 2 to form a single-layer brazed diamond tool with the diamond abrasive grains 2 orderly arranged.

[0083] The specific method is as follows: Figure 4 As shown, a rectangular light spot 10 is used to scan the solder, and three spray guns spraying diamond abrasive grains 2 are configured to form a spray gun group. The spray gun group includes a No. 1 spray gun 501, a No. 2 spray gun 502, and a No. 3 spray gun 503. The caliber of each spr...

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Abstract

The invention relates a method for laser brazing tool of monolayer diamond. The method comprises the following steps: providing a basal body of a diamond tool; coating a brazing material on the surface of a diamond tool basal body to prepare a diamond tool blank; providing a jetting system including a hopper and a spray gun connected with the hopper; providing diamond abrasive grains and placing the diamond abrasive grains into the hopper; providing a laser brazing system including a laser generator and a laser brazing working head; aligning the laser brazing working head and the spray gun to a tool blank surface; starting the laser brazing system and the jetting system, and doing synchronous motion of the laser brazing working head and the spray gun to ensure that focused laser beams produced by the laser brazing working head are positioned in front of the working head and are irradiated on the preposed brazing material so as to molten the brazing material; and after laser light spot, the diamond abrasive grains are sprayed by adopting the spray gun into a brazing molten tank. The diamond abrasive grains are jetted by adopting a paraxle to carry out laser brazing, so that burning oxidization and graphitization of the diamond abrasive grains during brazing are avoided.

Description

Technical field [0001] The invention relates to a processing method of a diamond tool, in particular to a method for laser brazing a single layer diamond tool. Background technique [0002] In recent years, diamond tools have been widely used in industrial production. New types of diamond tools are mostly single-layer brazed diamond tools. It uses high temperature to cause the brazing filler metal to diffuse between the diamond abrasive grains and the base metal, and the metallurgical compound reaction is obtained. The transition layer rich in carbides solves the problem of traditional single-layer electroplating or multi-layer sintered diamond tools that the diamond abrasive grains are only mechanically wrapped, improves the holding power of the matrix to the diamond particles, and fundamentally improves the abrasive, bond, The bonding strength between the three substrates. Compared with traditional single-layer electroplating tools, brazing tools have obvious advantages in ter...

Claims

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Application Information

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IPC IPC(8): B23K1/005B23K1/20B23K26/144
CPCB23K1/0056B23K1/20B23K26/144
Inventor 张明军朱彬胡永乐唐昆毛聪
Owner CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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