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Method for manufacturing nickel base brazing filler metal laser braze welding diamond abrasive grain

A technology of nickel-based brazing material and manufacturing method, which is applied in the direction of manufacturing tools, welding media, welding equipment, etc., and can solve the problems of limited size of brazing tools and long brazing cycle

Active Publication Date: 2009-08-05
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The object of the present invention is to provide a method for laser brazing diamond abrasive grains to solve the problems of long brazing cycle and limited size of brazing tools in vacuum brazing.

Method used

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  • Method for manufacturing nickel base brazing filler metal laser braze welding diamond abrasive grain
  • Method for manufacturing nickel base brazing filler metal laser braze welding diamond abrasive grain

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Embodiment

[0011] Embodiment: 45 steel substrates are processed into such as figure 1 The block sample shown; the surface to be brazed is properly polished with 100# metallographic sandpaper. In order to eliminate the influence of various unclean factors, the diamond abrasive grains and 45 steel substrate are respectively put into organic solvents for ultrasonic cleaning. Before brazing, pre-coat 40 / 50 mesh uncoated diamond and nickel-based brazing on the surface of 45 steel according to the three-layer sequence of 45 steel substrate / nickel-based brazing filler metal / diamond abrasive grains, and perform laser brazing after drying ,Such as figure 2 shown.

[0012] Laser brazing process parameters: laser wavelength 10.6μm, multimode rectangular spot, area 18mm2, laser power 780W, scanning speed 30mm / min. After chemical analysis, it was found that the solder layer spread evenly after laser brazing, and the nickel-based solder exhibited good wettability to diamond abrasive grains. After b...

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Abstract

A kind of manufacturing method of nickel-based brazing filler metal laser brazing diamond abrasive grain, belongs to the technical field of high-temperature brazing, the material required by the present invention is 45 steel matrix, nickel-based brazing filler metal and non-coated diamond, first the processed 45 steel matrix Put the non-coated diamond into the organic solvent for ultrasonic cleaning, and then make the sample to be processed according to the three-layer sequence of 45 steel substrate / nickel-based solder / diamond abrasive grains, and then put the sample into the CO2 laser, CNC processing machine tool and The gas protection device constitutes the brazing equipment. Under the action of the CO2 laser, the nickel-based solder is heated and melted, and undergoes chemical metallurgical bonding with the substrate and the diamond, thereby firmly connecting the diamond and the substrate. The invention can solve some deficiencies in the existing high-temperature brazing technology, has high processing efficiency, is easy to control the processing process, and is suitable for automatic production.

Description

technical field [0001] The invention belongs to the technical field of high-temperature brazing, and relates to the improvement of a method for high-temperature brazing diamond abrasive grains. Background technique [0002] Diamond (Diamond) is a simple substance of carbon (C), and its crystal structure belongs to the equiaxed face-centered cubic crystal system. The unique crystal structure makes diamond have the highest hardness, rigidity and excellent wear resistance, corrosion resistance and chemical resistance in nature. stability. The excellent physical and mechanical properties of diamond determine that it is an ideal raw material for making tools for hard and brittle materials. It is widely used in drills, sawing tools, and abrasive tools for hard and brittle materials such as cemented carbide, engineering ceramics, optical glass, semiconductor materials, and granite. , a wide variety of grinding tools and other important superhard wear-resistant surfaces. [0003] ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K1/005B23K1/20B23K35/30B23K103/18
Inventor 徐九华傅玉灿杨志波徐鸿钧苏宏华肖冰
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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