A kind of nickel base flux core solder, preparation method and application

A flux-cored and nickel-based technology is applied in the field of nickel-based flux-cored brazing filler metals, and can solve the problems of low brazing efficiency, low brazing joint strength, and poor processability of nickel-based brazing filler metals. Improve the brazing efficiency and the effect of automatic and precise addition

Active Publication Date: 2022-06-21
CHINA INNOVATION ACADEMY OF INTELLIGENT EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, many problems such as poor processability of nickel-based solder, low strength of brazed joints, and low brazing efficiency have not been well solved.

Method used

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  • A kind of nickel base flux core solder, preparation method and application

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The present embodiment discloses a nickel-based flux-cored solder, comprising a flux core and a nickel-based alloy surrounding the flux core;

[0035] The nickel-based alloy is a nickel-chromium alloy;

[0036] Described drug core includes according to mass fraction:

[0037] NiSi 2 Powder 24%, GdF 3 Powder 19%, brazing flux powder 57%;

[0038] The brazing flux powder includes boric acid and borax, wherein the mass ratio of boric acid and borax is 3:1.

[0039] The flux core accounts for 35% of the total mass of the nickel-based flux cored solder.

[0040] The nickel-chromium alloy strip used in the present invention has a width of 15 mm and a thickness of 0.6 mm, and includes: Cr20% and Ni80% according to the mass fraction.

[0041] The preparation method of nickel-based flux-cored solder in this embodiment includes the following steps:

[0042] Step 1, selection and preparation of raw materials: take the nickel-chromium alloy strip, prepare the quality of each ...

Embodiment 2

[0046] The main difference between this embodiment and Embodiment 1 is:

[0047] The chemical composition of the core and its mass percentage are: NiSi 2 Powder 17%, GdF 3 33% of the powder, 50% of the brazing flux powder; the flux core accounts for 40% of the total mass of the nickel-based flux cored solder.

Embodiment 3

[0049] The main difference between this embodiment and Embodiment 1 is:

[0050]The chemical composition of the core and its mass percentage are: NiSi 2 Powder 13%, GdF 3 The powder is 30%, and the brazing flux powder is 57%; the flux core accounts for 30% of the total mass of the nickel-based flux core brazing filler metal.

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Abstract

The invention discloses a nickel-based flux-cored solder, which comprises a flux core and a nickel-based alloy wrapping the flux core; the nickel-based alloy is a nickel-chromium alloy; and the flux core accounts for 30% of the total mass of the nickel-based flux-cored solder to 40%, the drug core comprises in terms of mass fraction: 13% to 24% NiSi 2 Powder, 19% to 33% GdF 3 powder, brazing flux powder is the balance; the invention also discloses the preparation method of the nickel-based cored solder and the brazing applied to ceramics and superalloys in the atmospheric environment; the invention has its own flux, which can be realized during brazing The automatic and synergistic addition of the brazing flux is achieved. In addition, the invention has good processing performance, reduces the brazing temperature during the application process, and improves the strength of the brazing joint.

Description

technical field [0001] The invention relates to the technical field of flux-cored solder, in particular to a nickel-based flux-cored solder, a preparation method and an application. Background technique [0002] Ceramics have excellent mechanical properties such as high hardness and high thermal strength, and have an extremely wide range of applications in many fields such as energy, chemical industry, machinery, aerospace, etc. However, ceramics are brittle and have poor impact and thermal shock resistance. It is made into complex structures, etc., which limits the application of its core functions. Superalloys have good plasticity and ductility, and have excellent machinability, but their properties in terms of high temperature resistance, corrosion resistance, and wear resistance can no longer meet the ever-increasing requirements for use. It can be seen that there is an obvious performance complementary relationship between ceramic materials and superalloys. In practica...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K35/30B23K35/40
CPCB23K35/3033B23K35/40
Inventor 王博孙华为李莹常波涛何茜纠永涛邓建峰周艳军吕红英
Owner CHINA INNOVATION ACADEMY OF INTELLIGENT EQUIP CO LTD
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