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Copper-based alloy brazing filler metal containing trace Ge, preparation method and brazing method thereof

A technology for copper-based alloys and alloy brazing filler metals, which can be applied to cleaning methods using liquids, metal processing equipment, cleaning methods and utensils, etc., and can solve the problems of poor fluidity, low climbing height, and poor wettability of copper-based brazing filler metals. Achieve the effect of enhanced corrosion resistance, high shear strength and lower melting point

Pending Publication Date: 2022-02-18
ANHUI UNIVERSITY OF TECHNOLOGY +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problems of poor fluidity, low climbing height, poor wettability and easy agglomeration of current copper-based solder, and provides a copper-based alloy solder containing a small amount of Ge, a preparation method and a brazing method thereof

Method used

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  • Copper-based alloy brazing filler metal containing trace Ge, preparation method and brazing method thereof
  • Copper-based alloy brazing filler metal containing trace Ge, preparation method and brazing method thereof
  • Copper-based alloy brazing filler metal containing trace Ge, preparation method and brazing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] A preparation method of a Ge-containing Cu-based alloy brazing filler metal of the present embodiment and a method for brazing the brazing filler metal, the steps are:

[0042] (1) Take Cu, Sn, Ti, Ga, Ge metal ingots and use 320#, 600# metallographic sandpaper to polish off impurities such as surface oxides, use an electronic balance to weigh 6.8g Cu, 2g Sn, 1g Ti, 0.1 g Ga and 0.1g Ge, put the weighed metal ingot in a beaker, add acetone to clean under ultrasonic for 5-10min, then add alcohol to ultrasonically clean for 5-10min, and finally blow dry;

[0043] (2) First place the dried spare Cu, Ti and Ge metal ingots in a vacuum electric arc furnace, fill in high-purity Ar gas as a protective gas after vacuuming, and melt for 2 to 3 times at a current of 2A to 5A;

[0044] (3) Take out the Cu-Ti-Ge alloy, place Sn and Ga in the melting pit, then add the Cu-Ti-Ge alloy, and then vacuumize and heat it with a tungsten melting arc at a current of 2A to 5A. Alloy smelting...

Embodiment 2

[0051] A preparation method of a Ge-containing Cu-based alloy brazing filler metal of the present embodiment and a method for brazing the brazing filler metal, the steps are:

[0052] (1) Take Cu, Sn, Ti, Ga, Ge and use 320#, 600# metallographic sandpaper to polish off impurities such as surface oxides, and weigh 6.7g Cu, 2g Sn, 1g Ti, 0.1g Ga and 0.2 g Ge, put the weighed metal ingot in a beaker, add acetone to clean under ultrasonic for 5-10min, then add alcohol to ultrasonically clean for 5-10min, and finally blow dry;

[0053] (2) First place the dried spare Cu, Ti and Ge metal ingots in a vacuum electric arc furnace, fill in high-purity Ar gas as a protective gas after vacuuming, and melt for 2 to 3 times at a current of 2A to 5A to obtain Cu-Ti-Ge alloy;

[0054] (3) Take out the Cu-Ti-Ge alloy, place Sn and Ga in the melting pit, then add the Cu-Ti-Ge alloy, and then vacuumize and heat it with a tungsten melting arc at a current of 2A to 5A. The alloy is smelted for 2...

Embodiment 3

[0061] (1) Take Cu, Sn, Ti, Ga, Ge metal ingots and use 320#, 600# metallographic sandpaper to polish off impurities such as surface oxides, use an electronic balance to weigh 6.6g Cu, 2g Sn, 1g Ti, 0.1 g Ga and 0.3g Ge, put the weighed metal ingot in a beaker, add acetone to clean under ultrasonic for 5-10min, then add alcohol to ultrasonically clean for 5-10min, and finally blow dry;

[0062] (2) First place the dried spare Cu, Ti and Ge metal ingots in a vacuum electric arc furnace, fill in high-purity Ar gas as a protective gas after vacuuming, and melt for 2 to 3 times at a current of 2A to 5A to obtain Cu-Ti-Ge alloy;

[0063] (3) Take out the Cu-Ti-Ge alloy, place Sn and Ga in the melting pit, then add the Cu-Ti-Ge alloy, and then vacuumize and heat it with a tungsten melting arc at a current of 2A to 5A. Alloy smelting 2 to 3 times; after cooling to room temperature, take out the alloy solder Cu-Sn-Ti-Ga-Ge from the vacuum electric arc furnace;

[0064] (4) Sampling:...

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Abstract

The invention relates to the technical field of superhard abrasives, and particularly relates to copper-based alloy brazing filler metal containing trace Ge, a preparation method and a brazing method thereof. The alloy brazing filler metal is prepared from, by mass, 64-70% of Cu, 17-20% of Sn, 7-10% of Ti, 1-5% of Ga and 0-5% of Ge, the alloy element proportion is reasonably adjusted on the basis of the Cu-based brazing filler metal, meanwhile, a small amount of Ge is added, and a proper amount of Ge is added to promote uniform nucleation and precipitation of a Cu-Sn phase and enable the Cu-Sn phase to be fine and dispersed. And when the content of Ge is too high, brittle phases can be generated, and the alloy brazing filler metal obtained by smelting in a vacuum arc furnace through the formula has the advantages of being low in price, low in melting point, high in hardness and abrasion resistance, high in shearing strength and the like.

Description

technical field [0001] The invention relates to the technical field of superhard abrasives, in particular to a copper-based alloy solder containing a small amount of Ge, a preparation method and a brazing method thereof. Background technique [0002] With the rapid development of modern industry, material processing has entered the era of high-efficiency and precision operations. Diamond has the advantages of high hardness and excellent physical and mechanical properties, making the use of diamond to manufacture tools an industrial boom. However, diamond also has certain limitations. Due to the extremely high interfacial energy between diamond and alloys and metals, the wettability and adhesion between low melting point alloys and diamond particles are very poor. In the traditional process , The utilization rate of diamonds in most impregnated tools is low, and a large amount of expensive diamonds fall off as waste during work. This is because the diamond particles are embe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/30B23K35/40B08B3/12B08B3/08
CPCB23K35/302B23K35/40B08B3/12B08B3/08
Inventor 徐东崔冰严佩佩左如忠赵丹樊志斌李维火张晖傅玉灿
Owner ANHUI UNIVERSITY OF TECHNOLOGY
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