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: 2008-02-27
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Abstract
  • Description
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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

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Embodiment

[0011] Embodiment: 45 steel substrates are processed into a nodular sample as shown in Figure 1; its brazing surface is properly polished with 100# metallographic sandpaper, and for eliminating the influence of various unclean factors, diamond abrasive grains and 45 The steel substrates were respectively placed in organic solvents for ultrasonic cleaning. Before brazing, pre-coat 40 / 50 mesh uncoated diamond and nickel-based brazing filler metals on The surface of 45 steel is laser brazed after drying, as shown in Figure 2.

[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 brazing, the crystal shape of diamond abrasive grains was complete, with sharp edges and corners, and no cracks.

[0013] The ...

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Abstract

The invention discloses a preparing method of nickel-based solder laser brazed diamond abrasive particle in the high temperature brazing technical domain, which comprises the following steps: adopting 45-steel base, nickel base solder and non-coat diamond; placing the manufactured 45-steel base and non-coat diamond in the organic solvent to do ultrasonic wave cleaning; preparing the manufactured sample of three-layered 45-steel base, nickel base solder and non-coat diamond sequently; brazing the sample on the solder equipment with CO2 laser, numeral control machine and gas protective device; heating the nickel-based solder through heating to connect base and diamond strictly. The invention solves some insufficiencies in the high-temperature brazing technique with high manufacturing efficiency, which is easy to control for automation manufacturing.

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 Applications(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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