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Zr-containing multi-element nickel-based brazing filler metal, preparation method and brazing method of Zr-containing multi-element nickel-based brazing filler metal

A brazing method and technology of brazing materials, which are applied in welding equipment, manufacturing tools, welding media, etc., can solve problems such as thermal damage, chemical erosion, and diamond graphitization, and achieve the effects of improving mechanical properties, inhibiting growth, and lowering melting point Effect

Pending Publication Date: 2022-06-28
ANHUI UNIVERSITY OF TECHNOLOGY +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The object of the present invention is to solve the problem that the existing nickel-based active brazing filler metal is made of diamond tool because of its high brazing temperature, which causes diamond graphitization, chemical erosion, participation in stress and other thermal damage problems, and provides a Zr-containing Multi-component nickel-based solder, preparation method and brazing method thereof

Method used

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  • Zr-containing multi-element nickel-based brazing filler metal, preparation method and brazing method of Zr-containing multi-element nickel-based brazing filler metal
  • Zr-containing multi-element nickel-based brazing filler metal, preparation method and brazing method of Zr-containing multi-element nickel-based brazing filler metal
  • Zr-containing multi-element nickel-based brazing filler metal, preparation method and brazing method of Zr-containing multi-element nickel-based brazing filler metal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Components (mass percentage): Ni: 55.0%, Cr: 15.0%, Si: 5.0%, Cu: 20.0%, Sn: 5.0%, Zr: 0%.

[0043] Preparation:

[0044] (1) Weigh the corresponding elemental metal raw materials according to the mass percentage of each element: after polishing the surface oxide scale and impurities of the corresponding elemental metal raw materials with sandpaper, weigh the corresponding 5.5gNi, 1.5g Cr, 0.5g Si, 2g Cu, 0.5g Sn, And ultrasonic cleaning with acetone for about 10min, drying for use.

[0045] (2) Place the dried metal raw material in a vacuum electric arc furnace, and pump it to a vacuum degree of 1×10 -3 , and pass Ar gas as a protective gas, put each metal raw material into the crucible from top to bottom according to the melting point, and the Sn metal is at the bottom, effectively avoiding the volatilization of the raw material during melting; then melting the alloy to make the solder The alloy is remelted-solidified-remelted-solidified 3-4 times, and the brazing f...

Embodiment 2

[0051] Components (mass percentage): Ni: 54.5%, Cr: 15.0%, Si: 5.0%, Cu: 20.0%, Sn: 5.0%, Zr: 0.5%.

[0052] (1) Weigh the corresponding elemental metal raw materials according to the mass percentage of each element: after polishing the surface oxide scale and impurities of the corresponding elemental metal raw materials with sandpaper, weigh the corresponding 5.45g Ni, 1.5g Cr, 0.5g Si, 2g Cu, 0.5g Sn and 0.05g Zr, ultrasonically cleaned with acetone for about 10min, and dried for later use.

[0053] (2) Place the dried metal raw material in a vacuum electric arc furnace, and pump it to a vacuum degree of 1×10 -3 Pa, and Ar gas was introduced as a protective gas, and each metal raw material was put into the crucible from top to bottom according to the melting point, and the Sn metal was at the bottom, which effectively avoided the volatilization of the raw materials during melting; The material alloy is remelted-solidified-remelted-solidified 3 to 4 times, and the solder all...

Embodiment 3

[0059] Components (mass percent): Ni: 54.0%, Cr: 15.0%, Si: 5.0%, Cu: 20.0%, Sn: 5.0%, Zr: 1.0%.

[0060] (1) Weigh the corresponding elemental metal raw materials according to the mass percentage of each element: after polishing the surface oxide scale and impurities of the corresponding elemental metal raw materials with sandpaper, weigh the corresponding 5.4g Ni, 1.5g Cr, 0.5g Si, 2g Cu, 0.5g Sn and 0.1g Zr, and ultrasonically cleaned with acetone for about 10min, and dried for later use.

[0061] (2) Place the dried metal raw material in a vacuum electric arc furnace, and pump it to a vacuum degree of 1×10 -3 Pa, and Ar gas was introduced as a protective gas, and each metal raw material was put into the crucible from top to bottom according to the melting point, and the Sn metal was at the bottom, which effectively avoided the volatilization of the raw materials during melting; The material alloy is remelted-solidified-remelted-solidified 3 to 4 times, and the solder allo...

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Abstract

The invention relates to the technical field of super-hard abrasive tool manufacturing, in particular to Zr-containing multi-element nickel-based brazing filler metal, a preparation method and a brazing method thereof.The Zr-containing multi-element nickel-based brazing filler metal is prepared from, by mass, 10.0%-15.0% of Cr, 3.0%-5.0% of Si, 10.0%-20.0% of Cu, 3.0%-5.0% of Sn, 0-2.0% of Zr and the balance Ni, and alloy brazing filler metal is obtained through vacuum arc melting. Generation of brittle phases in the brazing filler metal is reduced, and the toughness of the brazing filler metal is improved; 2, a small amount of Zr element is added, so that the structure and crystal grains of the brazing filler metal are refined, and the size of an intermetallic compound is reduced; 3, a small amount of Zr element can reduce the melting point range and melting point of the brazing filler metal, the Zr modified brazing filler metal has a finer microstructure and enhanced second phase dispersion strengthening, 4, the Zr element can consume the Ni element in the brazing filler metal, erosion of the Ni element to the surface of the diamond is reduced, and graphitization of the diamond is inhibited.

Description

technical field [0001] The invention relates to the technical field of superhard abrasive tool manufacturing, in particular to a Zr-containing multi-element nickel-based brazing filler metal, a preparation method and a brazing method thereof. Background technique [0002] Brazed diamond tools are often used in the processing of hard and brittle materials because of their high hardness, high strength, high wear resistance and sufficient chip space. Active brazing filler metals play a greater role in the preparation of brazed diamond tools. At present, the research on diamond tools has made great progress, but there are still some problems in the field of actual cutting. For example, if the brazing temperature is high, the thermal damage of the diamond particles is relatively large, which leads to a decrease in their strength. During the heavy-duty grinding process, the diamond particles with large thermal damage will be broken, fractured, or even fall off as a whole. The prob...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/02B23K35/30B23K35/40B23K1/008
CPCB23K35/0222B23K35/3033B23K35/40B23K1/008
Inventor 徐东张晖胡磊李海玲丁梓超左如忠崔冰张雷程战纠永涛秦建
Owner ANHUI UNIVERSITY OF TECHNOLOGY
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