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Copper-based amorphous brazing filler metal and preparation method thereof

An amorphous, copper-based technology, applied in the direction of manufacturing tools, welding equipment, metal processing equipment, etc., can solve the problems of brazing material brittleness at room temperature, limited application range, poor processability, etc., achieve narrow melting temperature range, and reduce processing procedures , easy processing effect

Pending Publication Date: 2022-02-18
HANGZHOU HUAGUANG ADVANCED WELDING MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The traditional copper-phosphorus-based solder contains high phosphorus content, and most of them are brittle compounds Cu 3 The presence of P forms leads to high room temperature brittleness and poor processability of the solder, which limits its application range.

Method used

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  • Copper-based amorphous brazing filler metal and preparation method thereof
  • Copper-based amorphous brazing filler metal and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The copper-based amorphous solder preparation method of the present embodiment comprises the following steps:

[0026] The composition and content of alloying elements are: P: 6.5%, Sn: 9.5%, Ni: 5%, Cu: balance. Alloy smelting: Use intermediate frequency furnace for alloy smelting and casting into CuPSnNi alloy ingot. Put the ingot of the above-mentioned suitable length into the installed and debugged quartz crucible 4, the inert gas blowing device 5 will vacuum the quartz crucible 4, start and adjust the power of the quartz crucible 4 (for high-frequency remelting, the power of the quartz crucible 4 It should be increased gradually, such as continuous increase with roughly the same power increase rate, or a step-like increase in power for a certain amount of increase, such as 1kw, for several minutes, a special case of step-like increase in power, the same below); when the surface of the alloy ingot is heated and turns red, it can be appropriate Speed ​​up the power ...

Embodiment 2

[0028] The copper-based amorphous solder preparation method of the present embodiment comprises the following steps:

[0029] The composition and content of alloying elements are: P: 6.5%, Sn: 9.7%, Ni: 5.5%, Cu: balance. Alloying and smelting is carried out in an intermediate frequency furnace, and cast into CuPSnNi alloy ingots. Put the ingot of the above-mentioned suitable length into the quartz crucible 4 that has been installed and adjusted, the inert gas blowing device 5 will vacuum the quartz crucible 4, start and adjust the power of the quartz crucible 4, and turn on when the surface of the ingot starts to heat and turn red Cooling roller 2, and finally control the temperature in the quartz crucible 4 between 750°C and 850°C; when the ingot is completely melted and the alloy melt 3 drips from the bottom of the quartz crucible 4, turn on the compressed air blowing device 1 in front of the cooling roller 2 , slowly lower the height of the quartz crucible 4, and at the s...

Embodiment 3

[0031] The copper-based amorphous solder preparation method of the present embodiment comprises the following steps:

[0032] The composition and content of alloying elements are: P: 6.5%, Sn: 9.7%, Ni: 5.5%, Si: 0.02%, Cu: balance. Alloying and smelting is carried out in an intermediate frequency furnace, and cast into CuPSnNi(Si) alloy ingots. Put the ingot of the above-mentioned suitable length into the quartz crucible 4 that has been installed and adjusted, the inert gas blowing device 5 will vacuum the quartz crucible 4, start and adjust the power of the quartz crucible 4, and turn on when the surface of the ingot starts to heat and turn red Cooling roller 2, and finally control the temperature in the quartz crucible 4 between 750°C and 850°C; when the ingot is completely melted and the alloy melt 3 drips from the bottom of the quartz crucible 4, turn on the compressed air blowing device 1 in front of the cooling roller 2 , slowly lower the height of the quartz crucible ...

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Abstract

The invention relates to a copper-based amorphous brazing filler metal and a preparation method thereof. The copper-based amorphous brazing filler metal comprises the following components in percentage by mass: 6-7% of P; 9%-10% of Sn; 4.5%-6.5% of Ni; 0 to 0.1 percent of Si; and the balance of Cu. The preparation method of the copper-based amorphous brazing filler metal comprises the following steps: preparing materials; smelting by using an intermediate frequency furnace and casting into an alloy ingot; putting the alloy ingot into a quartz crucible, vacuumizing the quartz crucible, starting and adjusting the power of the quartz crucible, driving a cooling roller to rotate when the surface of the alloy ingot is heated and becomes red, and controlling the temperature in the quartz crucible to be 750-850 DEG C; and when the alloy cast ingot is completely molten and molten liquid drops from the bottom of the quartz crucible, starting a compressed air blowing device, starting an inert gas blowing device , desceding the quartz crucible gradually to the position 0.2 mm-1mm above the cooling roller, and preparing the copper-based amorphous brazing filler metal strip. The method is short in procedure, direct in forming, low in cost and suitable for large-scale production.

Description

technical field [0001] The application relates to a copper-based amorphous solder and a preparation method thereof, which is mainly suitable for the preparation of medium-temperature brazing materials. Background technique [0002] There are two main types of medium temperature brazing materials: silver-based and copper-based. Because of its high silver content, silver-based solder has moderate melting point, good manufacturability, and good wettability. The brazed joint has good strength and toughness, electrical conductivity and corrosion resistance, and the weld seam is beautiful, so it is widely used. Hard solder is required. Copper-based solder is mainly to replace silver-based solder with low-silver or even silver-free copper-based solder to reduce costs under the premise of ensuring brazing performance. Because of its low melting point, good fluidity, economical price and self-brazing properties, copper-phosphorus-based solder is considered to be a material that can...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C45/00C22C1/03B22D11/06B23K35/30B23K35/40
CPCC22C45/001C22C1/03B22D11/004B22D11/0611B23K35/302B23K35/40C22C2200/02C22C1/11
Inventor 罗良良王晓蓉黄世盛罗寿根卓晓刘金湘房敏
Owner HANGZHOU HUAGUANG ADVANCED WELDING MATERIALS CO LTD
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