Method and fixture for welding high temperature alloy and cupronickel

A high-temperature alloy, cupronickel technology, applied in welding equipment, manufacturing tools, metal processing equipment, etc., can solve the problems of the growth of the grain size of the base metal, the deformation of the parts, the performance of the base metal, etc., and achieve high cost and corrosion resistance. Good, good auxiliary development effect

Active Publication Date: 2011-03-09
AECC AVIATION POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to overcome the disadvantages in the prior art that the grain size of the base metal grows, the performance of the base metal decreases, and the parts are deformed during welding, the present invention proposes a method for welding superalloys and white copper and its fixtures

Method used

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  • Method and fixture for welding high temperature alloy and cupronickel
  • Method and fixture for welding high temperature alloy and cupronickel
  • Method and fixture for welding high temperature alloy and cupronickel

Examples

Experimental program
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Effect test

Embodiment 1

[0036] In this embodiment, B19 cupronickel is welded on the engine shaft made of GQGH4169 superalloy.

[0037] The solder used in this embodiment is powdered gold 20 nickel chromium iron silicon boron, and the particle size of the solder is -150 mesh.

[0038] When welding, the specific process includes the following steps:

[0039] Step 1. Clean the surface of the welded parts; clean the surface of the welded parts with acetone and alcohol in sequence;

[0040] Step 2, configure the adhesive; the adhesive used includes 500g trichloroethylene and 50g polystyrene; pour the two into clean glassware, mix well, and cover for use;

[0041] Step 3. Solder configuration; mix 100g of powdered gold 20 nickel chromium iron silicon boron with 100g of binder. The specific process is to pour the powdered solder into a clean beaker, and then add 100g of binder. Dilute and stir evenly with a glass rod to form a paste solder; the viscosity of the paste solder is that when the glass rod is used to lift...

Embodiment 2

[0045] In this embodiment, B19 copper-nickel alloy is welded on the bearing seat made of GQGH4169 high-temperature alloy.

[0046] The solder used in this embodiment is powdered gold 20 nickel chromium iron silicon boron, and the particle size of the solder is -150 mesh.

[0047] When implementing welding, the specific process includes the following steps:

[0048] Step 1. Clean the surface of the welded parts; clean the surface of the welded parts with acetone and alcohol in sequence;

[0049] Step 2, configure the adhesive; the adhesive used includes 500g trichloroethylene and 50g polystyrene; pour the two into clean glassware, mix well, and cover for use;

[0050] Step 3. Solder configuration; mix 100g of powdered gold 20 nickel chromium iron silicon boron with 100g of binder. The specific process is to pour the powdered solder into a clean beaker, and then add 100g of binder. Dilute and stir evenly with a glass rod to form a paste solder; the viscosity of the paste solder is that w...

Embodiment 3

[0054] In this embodiment, B19 cupronickel is welded on the sealing ring made of GQGH4169 superalloy.

[0055] The solder used in this embodiment is powdered gold 20 nickel chromium iron silicon boron, and the particle size of the solder is -150 mesh.

[0056] When implementing welding, the specific process includes the following steps:

[0057] Step 1. Clean the surface of the welded parts; clean the surface of the welded parts with acetone and alcohol in sequence;

[0058] Step 2, configure the adhesive; the adhesive used includes 500g trichloroethylene and 50g polystyrene; pour the two into clean glassware, mix well, and cover for use;

[0059] Step 3. Solder configuration; mix 100g of powdered gold 20 nickel chromium iron silicon boron with 100g of binder. The specific process is to pour the powdered solder into a clean beaker, and then add 100g of binder. Dilute and stir evenly with a glass rod to form a paste solder; the viscosity of the paste solder is that when the glass rod is...

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Abstract

The invention discloses a method and fixture for welding high temperature alloy and cupronickel. A brazing filler metal consisting of powdery gold 20, nickel, chromium, iron, silicon and boron, or consisting of platinoid copper, manganese, cobalt and nickel is used for welding. The brazing filler metal is coated or arranged between a cupronickel piece and high temperature alloy, and the peripheryof the bonding surface of the cupronickel piece and the high temperature alloy is coated with a red stop-off agent and is pressed tightly by a fixture. A brazing filler metal welding piece which is pressed tightly by the fixture is put in a vacuum furnace, and then the processes of vacuumizing, heating and brazing are performed. Since the brazing filler metal consisting of copper, manganese, cobalt and nickel has the characteristics of high strength, good corrosion resistance, low price and high weld joint quality, and the brazing filler metal consisting of gold 20, nickel, chromium, iron, silicon and boron has the characteristics of good ductility and strong wetting function, respective pressing is omitted the process of brazing, thereby achieving good molding quality of the weld joint. Since the brazing elements of the two brazing filler metals used in the brazing process have the alloying effect on the two materials to be connected, the brazing joint has large spreading area, the joint is high in strength, and the quality of the brazing joint meets the requirement.

Description

Technical field [0001] The invention relates to welding technology, in particular to a method for welding high-temperature alloys and cupronickel. Background technique [0002] Previously, when welding two materials (GQGH4169+B19), vacuum brazing with nickel-based solder was used. The welding temperature was 1045°C. At this temperature, the base material (GQGH4169) 10 grain size grade will be changed to 5 Or lower, destroying the original grade of the material, thereby reducing the mechanical properties of the base material. [0003] The search did not find the relevant technology for welding two materials (GQGH4169+B19). [0004] The prior art uses nickel-based brazing filler metal HBNi82CrSiB for vacuum brazing of these two materials, but because the brazing filler metal is most suitable for brazing at a temperature of 1045°C and holding for 15 minutes. Because the characteristic of vacuum brazing is to heat the brazing material to the melting temperature of the brazing filler me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K1/19B23K1/008B23K1/20B23K3/08
Inventor 呼新岗康文军时孝雷
Owner AECC AVIATION POWER CO LTD
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