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Brazing filler metal for welding of high-temperature alloy and cupronickel and preparation method thereof

A high-temperature alloy and solder technology, applied in welding equipment, welding/cutting medium/material, welding medium, etc., can solve the problems of reducing the performance of high-temperature alloys

Active Publication Date: 2011-04-13
AECC AVIATION POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the deficiency of reducing the performance of superalloys existing in the prior art, the present invention proposes a brazing filler metal for welding superalloys and cupronickel and a manufacturing method thereof

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] This embodiment is a brazing filler metal for welding GQGH4169 superalloy and B19 cupronickel. It consists of manganese, cobalt, nickel, phosphorus, tin, silicon, aluminum, zinc and copper to form copper-manganese-cobalt-nickel brazing filler metal, and to form copper-manganese-cobalt The percentages of each component of the nickel solder are 26% manganese, 14% cobalt, 1.5% nickel, 0.03% phosphorus, 0.02% tin, 0.02% silicon, 0.01% aluminum and 0.01% zinc, and the balance is copper. The copper-manganese-cobalt-nickel solder is in the form of a foil with a thickness of 0.1mm.

[0014] The present embodiment also proposes a method for preparing copper-manganese-cobalt-nickel solder, comprising the following steps:

[0015] Step 1, prepare manganese, cobalt, nickel and copper with a purity of 99.95% in proportion, place them in a crucible and melt them at 1000°C to obtain a liquid alloy; pour the liquid alloy into a mould, cool naturally and solidify to obtain cast rod;

...

Embodiment 2

[0019] This embodiment is a brazing filler metal for welding GQGH4169 superalloy and B19 cupronickel. It consists of manganese, cobalt, nickel, phosphorus, tin, silicon, aluminum, zinc and copper to form copper-manganese-cobalt-nickel brazing filler metal, and to form copper-manganese-cobalt The percentages of the components of the nickel solder are 28% manganese, 12% cobalt, 2.5% nickel, 0.03% phosphorus, 0.02% tin, 0.02% silicon, 0.01% aluminum and 0.01% zinc, and the balance is copper. The copper-manganese-cobalt-nickel solder is in the form of a foil with a thickness of 0.1mm.

[0020] This embodiment also proposes a method for preparing copper-manganese-cobalt-nickel solder.

[0021] Step 1, prepare manganese, cobalt, nickel and copper with a purity of 99.95% in proportion, place them in a crucible and melt them at 1000°C to obtain a liquid alloy; pour the liquid alloy into a mould, cool naturally and solidify to obtain cast rod;

[0022] Step 2, processing the obtained...

Embodiment 3

[0025] This embodiment is a brazing filler metal for welding GQGH4169 superalloy and B19 cupronickel. It consists of manganese, cobalt, nickel, phosphorus, tin, silicon, aluminum, zinc and copper to form copper-manganese-cobalt-nickel brazing filler metal, and to form copper-manganese-cobalt The percentages of the components of the nickel solder are 33% manganese, 13% cobalt, 1.5% nickel, 0.03% phosphorus, 0.02% tin, 0.02% silicon, 0.01% aluminum and 0.01% zinc, and the balance is copper. The copper-manganese-cobalt-nickel solder is in the form of a foil with a thickness of 0.1mm.

[0026] This embodiment also proposes a method for preparing copper-manganese-cobalt-nickel solder.

[0027] Step 1, prepare manganese, cobalt, nickel and copper with a purity of 99.95% in proportion, place them in a crucible and melt them at 1000°C to obtain a liquid alloy; pour the liquid alloy into a mould, cool naturally and solidify to obtain cast rod;

[0028] Step 2, processing the obtained...

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Abstract

The invention discloses brazing filler metal for welding of high-temperature alloy and cupronickel and a preparation method thereof. The brazing filler metal is a foil-shaped copper, manganese, cobalt and nickel brazing filler metal consisting of 26 to 35 percent of manganese, 8 to 14 percent of cobalt, 1.5 to 3.0 percent of nickel, 0.03 percent of phosphorus, 0.02 percent of tin, 0.02 percent of silicon, 0.01 percent of aluminum, 0.01 percent of zinc and the balance of copper. By rolling blanks of the copper, manganese, cobalt and nickel brazing filler metal by using a rolling mill, a platinum-shaped brazing filler metal with the thickness of 0.1mm is obtained. The brazing filler metal is applied to rotating working components bearing high temperature, high pressure and large torque. The brazing filler metal is used for welding of stainless steel and stainless steel, stainless steel and high-temperature alloys, the high-temperature alloys and the cupronickel, and the high-temperature alloys and the high-temperature alloys, and can enhance the mechanical properties of welding pieces and prolong the service life of the welding pieces.

Description

technical field [0001] The invention relates to welding technology, in particular to a brazing filler metal used for welding superalloys and cupronickel. Background technique [0002] Before welding the two materials (GQGH4169+B19), vacuum brazing with nickel-based solder was used, and the welding temperature was 1045°C. The welding at this temperature will change the grain size grade of the base material (GQGH4169) from grade 10 to grade 5. Or lower, destroying the original grade of the material, thereby reducing the mechanical properties of the base material. [0003] In the prior art, nickel-based solder HBNi82CrSiB is used to vacuum braze the two materials, but the most suitable brazing temperature for this solder is 1045° C. and the heat preservation time is 15 minutes. Since the characteristic of vacuum brazing is that the material to be brazed needs to be heated to the melting temperature of the solder at the same time. For the required materials, the brazing temper...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/30B23K35/02B23P15/00B23K103/18
Inventor 呼新岗康文军任耀文
Owner AECC AVIATION POWER CO LTD
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