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Material for preparing nickel-based brazing paste and preparation method of material

A brazing paste, nickel-based technology, applied in the field of materials, can solve the problems of reducing the surface fluidity and wettability of Inconel alloys, and difficult to achieve large-area packaging, and achieve the effects of fine particle size, high sphericity, and low oxygen content

Inactive Publication Date: 2018-07-17
CHONGQING MATERIALS RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The Inconel high-temperature nickel-based alloy used in the current aero-engine casing, because Cr, Al, Ti and other elements greatly reduce the surface fluidity and wettability of the Inconel alloy, so traditional packaging materials and processes are used for packaging and processing Difficult to achieve large area packaging when

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Take the components according to the following proportions: 3.19 kg of pure nickel block; 1 kg of nickel-boron master alloy; 0.35 kg of pure chromium; 0.2 kg of pure silicon; 0.15 kg of pure iron powder with a particle size of 300 mesh; 0.06 kg; 0.05 kg of tungsten powder with a particle size of 300 mesh, put into a crucible. Then put the prepared raw materials into the vacuum induction furnace together with the crucible, and pump the vacuum to 10 -4Pa, then fill it with argon to atmospheric pressure, and then cycle through the process of pumping and argon again until the furnace is filled with high-purity argon and then starts to heat and melt. Control the temperature of the molten metal at 1600°C and keep it warm for 30 minutes to fully mix the molten metal. Pour the smelted molten metal into the tundish, inhale it into the atomization tower (device) through a 4mm diameter guide tube, and pass in a mixed gas of argon (purity greater than 99.9%) and nitrogen (purity g...

Embodiment 2

[0044] Take each component according to the following proportions: 3.09 kg of pure nickel block; 1 kg of nickel-boron master alloy; 0.35 kg of pure chromium; 0.2 kg of pure silicon; 0.15 kg of pure iron powder with a particle size of 300 mesh; 0.06 kg; 0.15 kg of tungsten powder with a particle size of 300 mesh, put into the crucible. Then put the prepared raw materials into the vacuum induction furnace together with the crucible, and pump the vacuum to 10 -4 Pa, then fill it with argon to atmospheric pressure, and then cycle through the process of pumping and argon again until the furnace is filled with high-purity argon and then starts to heat and melt. Control the temperature of the molten metal at 1600°C and keep it warm for 30 minutes to fully mix the molten metal. Pour the smelted molten metal into the tundish, inhale it into the atomization tower (device) through a 4mm diameter guide tube, and pass in a mixed gas of argon (purity greater than 99.9%) and nitrogen (purit...

Embodiment 3

[0049] Take each component according to the following proportions: 3 kg of pure nickel block; 1 kg of nickel-boron master alloy; 0.34 kg of pure chromium; 0.2 kg of pure silicon; 0.15 kg of pure iron powder with a particle size of 300 mesh; 0.06 kg; 0.25 kg of tungsten powder with a particle size of 300 mesh, put into the crucible. Then put the prepared raw materials into the vacuum induction furnace together with the crucible, and pump the vacuum to 10 -4 Pa, then fill it with argon to atmospheric pressure, and then cycle through the process of pumping and argon again until the furnace is filled with high-purity argon and then starts to heat and melt. Control the temperature of the molten metal at 1600°C and keep it warm for 30 minutes to fully mix the molten metal. Pour the smelted molten metal into the tundish, inhale it into the atomization tower (device) through a 4mm diameter guide tube, and pass in a mixed gas of argon (purity greater than 99.9%) and nitrogen (purity g...

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Abstract

The invention relates to a material for preparing a nickel-based brazing paste and a preparation method of the material. The material comprises the compositions of, by weight, 6-7 parts of nickel, 1-2parts of nickel-boron intermediate alloy, 0.6-0.7 part of chromium, 0.4-0.6 part of silicon, 0.2-0.4 part of iron powder, 0.12-0.15 part of niobium powder, 0.1-0.5 part of tungsten powder, and no more than 0.5 part of impurities. According to the material for preparing the nickel-based brazing paste, the soldering paste melting temperature is 1100-1150 DEG C, the welding temperature is 1200-1250DEG C, the working temperature is high, and the brittleness of a welded joint can be greatly reduced.

Description

technical field [0001] The invention relates to a material, in particular to a material and a preparation method for preparing nickel-based solder paste. Background technique [0002] Superalloys usually use Fe, Co, Ni and other elements as the matrix. They can maintain good alloy properties in high temperature environments, can withstand large stresses in complex environments, and have excellent corrosion resistance and wear resistance. In the field of aerospace, the amount of superalloys accounts for about 40% to 60% of the total materials. Nickel-based superalloys, known as "super alloys" in Europe and the United States, use Ni as the matrix element (>50%), and have a service temperature range of 650-1100°C. They have excellent metal comprehensive properties at medium and high temperatures. The alloy has been applied in many fields such as aero-engine, transportation, petrochemical industry, power energy, etc., and has been widely promoted in many civil industries. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C19/05C22C1/03B22F1/00B22F9/08
CPCB22F1/0003B22F9/082B22F2009/088C22C1/023C22C1/03C22C19/057
Inventor 谢福幸陈洁沈骏赵安中张贤坤郑雅文邹兴政
Owner CHONGQING MATERIALS RES INST
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