A kind of HF-containing multi-component boron-free nickel-based alloy solder, preparation method and brazing method thereof

A technology of nickel-based alloys and brazing methods, used in metal processing equipment, welding equipment, manufacturing tools, etc., can solve the problems of diamond graphitization, residual stress thermal damage, chemical erosion, etc., to reduce melting point and improve wear resistance. , the effect of suppressing generation

Active Publication Date: 2022-05-17
ANHUI UNIVERSITY OF TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The object of the present invention is to solve the problems that the higher brazing temperature of Ni-based active solder causes thermal damage such as graphitization, chemical erosion and residual stress of diamond, and provides a kind of multi-component boron-free nickel-based alloy solder containing Hf, Preparation method and brazing method thereof

Method used

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  • A kind of HF-containing multi-component boron-free nickel-based alloy solder, preparation method and brazing method thereof
  • A kind of HF-containing multi-component boron-free nickel-based alloy solder, preparation method and brazing method thereof
  • A kind of HF-containing multi-component boron-free nickel-based alloy solder, preparation method and brazing method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Composition (mass percentage): Ni: 55.0%, Cr: 15.0%, Si: 5.0%, Cu: 20.0%, Sn: 5.0%, Hf: 0%.

[0041] Preparation:

[0042] (1) Weigh the corresponding elemental metal raw materials according to the mass percentage of each element: use sandpaper to polish the oxide skin and impurities on the surface of the corresponding elemental metal raw materials, and weigh the corresponding 5.5g Ni, 1.5g Cr, 0.5g Si, 2g Cu, 0.5g Sn , and ultrasonically cleaned with acetone for about 10 minutes, dried for later use.

[0043] (2) Place the dried metal raw material in a vacuum electric arc furnace, and evacuate to a vacuum degree of 3×10 -3 Pa, and Ar gas is passed in as a protective gas, and the raw materials of various metals are put into the crucible from top to bottom according to the melting point, and the Sn metal is at the bottom, which can effectively avoid the volatilization of raw materials during smelting; The material alloy is remelted-solidified-remelted-solidified 3 to 4...

Embodiment 2

[0049] Composition (mass percentage): Ni: 54.0%, Cr: 15.0%, Si: 5.0%, Cu: 20.0%, Sn: 5.0%, Hf: 1.0%.

[0050] (1) Weigh the corresponding elemental metal raw materials according to the mass percentage of each element: sand the scale and impurities on the surface of the corresponding elemental metal raw materials and weigh the corresponding 5.4g Ni, 1.5g Cr, 0.5g Si, 2g Cu, 0.5g Sn and 0.1gHf, and ultrasonically cleaned with acetone for about 10 minutes, dried for use.

[0051] (2) Place the dried metal raw material in a vacuum electric arc furnace, and evacuate to a vacuum degree of 3×10 -3 Pa, and Ar gas is introduced as a protective gas, and the raw materials of various metals are put into the crucible from top to bottom according to the melting point, and the Sn metal is at the bottom, which can effectively avoid the volatilization of raw materials during smelting; The material alloy is remelted-solidified-remelted-solidified 3 to 4 times, and after the solder alloy is coo...

Embodiment 3

[0057] Composition (mass percentage): Ni: 51.0%, Cr: 15.0%, Si: 5.0%, Cu: 20.0%, Sn: 5.0%, Hf: 4.0%

[0058] (1) Weigh the corresponding elemental metal raw materials according to the mass percentage of each element: use sandpaper to polish the oxide skin and impurities on the surface of the corresponding elemental metal raw materials, and weigh the corresponding 5.1g Ni, 1.5g Cr, 0.5g Si, 2g Cu, 0.5g Sn and 0.4gHf, and ultrasonically cleaned with acetone for about 10 minutes, dried for later use.

[0059] (2) Place the dried metal raw material in a vacuum electric arc furnace, and evacuate to a vacuum degree of 3×10 -3 Pa, and Ar gas is introduced as a protective gas, and the raw materials of various metals are put into the crucible from top to bottom according to the melting point, and the Sn metal is at the bottom, which can effectively avoid the volatilization of raw materials during smelting; The material alloy is remelted-solidified-remelted-solidified 3 to 4 times, and...

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Abstract

The invention relates to the field of brazing technology, in particular to a multi-component boron-free nickel-based alloy brazing material containing Hf, a preparation method and a brazing method thereof; the multi-component boron-free nickel-based alloy solder containing Hf comprises a NiCrSiCuSn alloy And the reinforcing phase Hf, the mass percentage of each component is 51.0% to 55.0% of Ni, 12.0% to 15.0% of Cr, 3.0% to 5.0% of Si, 16.0% to 20.0% of Cu, 3.0% to 5.0% of Sn and 0-4% Hf are obtained by vacuum arc melting to obtain alloy solder, and the B element is removed, which greatly improves the toughness of the solder; adding a small amount of Hf element reduces graphitization and thermal conductivity without increasing the brazing temperature. The problem of thermal damage such as cracks reduces the generation of brittle phases, improves the holding force of the solder on the diamond, improves the strength and hardness of the joint, and ensures the mechanical properties of the joint.

Description

technical field [0001] The invention relates to the technical field of brazing, in particular to a multi-element boron-free nickel-based alloy brazing filler metal containing Hf, a preparation method and a brazing method thereof. Background technique [0002] Compared with traditional diamond tools, single-layer brazed diamond tools have many advantages such as strong diamond abrasive grain fixation, high cutting efficiency, large chip space, and long service life, so they are often used in the processing of hard and brittle materials. However, there are still some shortcomings. Due to the high brazing temperature during the manufacture of brazed diamond tools, the thermal damage of diamond particles is relatively large, resulting in a decrease in their strength. During the heavy-duty grinding process, these diamond particles with large thermal damage are broken. , breaking, or even falling off as a whole is relatively more likely. [0003] At present, the commonly used act...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K35/30B23K35/40B23K1/00B23K1/008B23K1/20
CPCB23K35/304B23K35/40B23K1/0004B23K1/008B23K1/206B23K1/20
Inventor 徐东崔冰丁梓超左如忠张晖李维火傅玉灿孙华为张雷程战
Owner ANHUI UNIVERSITY OF TECHNOLOGY
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