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Copper based multi-element alloy manual electrodes with low content silver

A multi-element alloy and brazing material technology, applied in the direction of welding/cutting media/materials, welding media, welding equipment, etc., can solve the problems of low wettability, high silver content, low mechanical strength, etc., to improve wettability, The effect of low cost and high mechanical strength

Inactive Publication Date: 2004-04-21
NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Silver-based brazing material is more expensive due to its high silver content, and its mechanical strength is low after brazing with copper alloy, stainless steel, and high-strength steel at 900°C-1000°C; copper-based silver-free brazing and nickel-based brazing The wettability of brazing with copper alloy, stainless steel and high-strength steel at 900°C-1000°C is low

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] According to the alloy composition according to the nominal composition, the medium frequency induction furnace is used to melt into an ingot. The weight percentage of the alloy is: Mn: 11%, Ni: 8%, Ag: 3%, Si: 0.3%, B: 0.06%, and the balance For copper and unavoidable impurities. The prepared alloy is processed into a strip with a thickness of 0.1mm, and the stainless steel base metal is brazed with a conventional method. It has good wettability, good flow, and a spreading area of ​​300mm on the base metal. 2 , the maximum filling gap of brazing material is 0.2mm, σ b Up to 240MPa.

Embodiment 2

[0015] According to the alloy composition according to the nominal composition, the medium frequency induction furnace is used to melt into an ingot. The weight percentage of the alloy is: Mn: 15%, Ni: 12%, Ag: 7%, Si: 1%, B: 0.3%, and the balance For copper and unavoidable impurities. The obtained alloy is processed into a wire material with a thickness of Φ1mm, and the stainless steel base material is brazed with conventional methods. It has good wettability, good flowability, and a spreading area of ​​310mm on the base material. 2 , the brazing filler gap is 0.2mm, σ b Up to 238MPa.

Embodiment 3

[0017] According to the alloy composition according to the nominal composition, the medium frequency induction furnace is used to melt into an ingot. The weight percentage of the alloy is: Mn: 21%, Ni: 18%, Ag: 9%, Si: 1.8%, B: 0.7%, and the balance For copper and unavoidable impurities. The prepared alloy is processed into a narrow strip with a specification of 2mm×0.2mm, and the stainless steel base metal is brazed with conventional methods. It has good wettability, good flow, and a spreading area of ​​305mm on the base metal. 2 , the brazing filler gap is 0.2mm, σ b Up to 242MPa.

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Abstract

A multi-element low-Ag Cu-base alloy solder for metals, Cu alloy, stainless steel and high-strength steel contains Mn (10-25 wt.%), Ni (5-20), Ag (2-10), Si (0.1-2), B (0.05-1) and Cu (rest). Its advantages are high welding strength and low cost.

Description

technical field [0001] A copper-based low-silver multi-component alloy brazing material, relating to a brazing material for metals, especially for brazing with copper alloy, stainless steel, and high-strength steel as the base material, which is used in the use environment and in contact with liquid oxygen and kerosene medium. Based multi-metal brazing filler metals. Background technique [0002] At present, silver-based brazing materials, copper-based silver-free brazing materials, and nickel-based brazing materials are mainly used in welding methods for copper alloys, stainless steels, and high-strength steels that are exposed to liquid oxygen and kerosene. Silver-based brazing material is more expensive due to its high silver content, and its mechanical strength is low after brazing with copper alloy, stainless steel, and high-strength steel at 900°C-1000°C; copper-based silver-free brazing and nickel-based brazing The wettability of brazing with copper alloy, stainless ...

Claims

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Application Information

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IPC IPC(8): B23K35/30
Inventor 马光李银娥王轶陈靖李明利周亚波
Owner NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
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