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Nickel-based boron-free brazing material and preparation thereof

A brazing material, nickel-based technology, applied in welding/cutting media/materials, welding equipment, welding media, etc., can solve the problems of complex manufacturing process, high cost, application limitations, etc., and achieve low cost, short cycle, preparation simple craftsmanship

Inactive Publication Date: 2011-03-23
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most of the nickel-based solders being studied focus on adding phosphorus, noble metals or rare earth elements to improve their melting point and mechanical properties, or hope to obtain amorphous nickel-based solders (5. Chen Xuanjun, Zhu Bangwen, Guo Dexing, etc. A Ni-P-Cu nickel-based brazing material [P]. China. Invention. CN1102150.05.03.1995; 6. Li Mingli, Ma Ruixia, Du Ping, Tian Guangmin, Dang Hongyun. A palladium-containing nickel-based solder Multi-element alloy high-temperature brazing material [P]. China. CN1583353.05.23.2005; 7. Yu Suqin, Ni-based amorphous solder research and application [J], 1991: 93-97; 8.A.Rabinkin.Brazing with (NiCoCr)-B-Si amorphous brazing filler metals: alloys, processing, joint structure, properties, applications.2004.), but its cost is high, the manufacturing process is complicated, and its application is greatly limited

Method used

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  • Nickel-based boron-free brazing material and preparation thereof
  • Nickel-based boron-free brazing material and preparation thereof
  • Nickel-based boron-free brazing material and preparation thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Embodiment 1: Preparation of Ni54.9Cr3Si2Zr14.4Sn25.6 solder alloy

[0023] Weigh 54.9% nickel with a purity of 99.9%, 3% chromium with a purity of 99.9%, 2% silicon with a purity of 99.9%, 14.4% zirconium with a purity of 99.9%, and 25.6% tin with a purity of 99.9%. After cleaning and weighing the above-mentioned chromium, silicon, zirconium, tin and nickel raw materials, they are alloyed by arc melting method under an inert gas protective atmosphere. The obtained button-shaped sample is preliminarily cut into strips and packed into a quartz tube to ensure that the vacuum in the quartz tube is below 1Pa, and then filled with high-purity argon to (0.7-0.8)×10 5 Pa. The packaged sample is put into a reaction furnace for stress relief annealing heat treatment at a temperature of 800° C. for 7 days to obtain the nickel-based boron-free medium-temperature solder alloy. After taking out the above-mentioned heat-treated nickel-based solder alloy, it is quickly quenched in i...

Embodiment 2

[0027] Embodiment 2: Preparation of Ni51.1Cr3Si2Zr14.1Sn30 solder alloy

[0028] Weigh 51.1% nickel with a purity of 99.9%, 3% chromium with a purity of 99.9%, 2% silicon with a purity of 99.9%, 14.1% zirconium with a purity of 99.9%, and 30% tin with a purity of 99.9%. After cleaning and weighing the above-mentioned chromium, silicon, zirconium, tin and nickel raw materials, they are alloyed by arc melting method under an inert gas protective atmosphere. The obtained button-shaped sample is preliminarily cut into strips and packed into a quartz tube to ensure that the vacuum in the quartz tube is below 1Pa, and then filled with high-purity argon to (0.7-0.8)×10 5Pa. The packaged sample is put into a reaction furnace for stress relief annealing heat treatment at a temperature of 750° C. for 7 days to obtain the nickel-based boron-free medium-temperature solder alloy. After taking out the above-mentioned heat-treated nickel-based solder alloy, it is quickly quenched in ice wa...

Embodiment 3

[0033] Embodiment 3: Preparation of Ni58Si2.8Zr13.2Sn25.9 solder alloy

[0034] 58% of nickel with a purity of 99.9%, 2.8% of silicon with a purity of 99.9%, 13.2% of zirconium with a purity of 99.9%, and 25.9% of tin with a purity of 99.9% were weighed. After cleaning and weighing the above-mentioned chromium, silicon, zirconium, tin and nickel raw materials, they are alloyed by arc melting method under an inert gas protective atmosphere. The obtained button-shaped sample is preliminarily cut into strips and packed into a quartz tube to ensure that the vacuum in the quartz tube is below 1Pa, and then filled with high-purity argon to (0.7-0.8)×10 5 Pa. The packaged sample is put into a reaction furnace for stress relief annealing heat treatment at a temperature of 900° C. for 5 days to obtain the nickel-based boron-free medium-temperature solder alloy. After taking out the above-mentioned heat-treated nickel-based solder alloy, it is quickly quenched in ice water, cut into c...

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Abstract

The invention provides a nickel based boron free brazing material and a method for preparing the same, which relates to metal alloy. The invention provides a nickel based boron free brazing material which has the advantages of a melting temperature of 1000 to 1150 DEG C, good wettability, no boron, application to stainless steel braze welding, low material cost, simple preparation process, short cycle, good replacement of the conventional boron containing nickel based brazing material and a method for preparing the same. The brazing material comprises the following components in weight percentage: 0 to 4 percent of chrome, 2 to 4 percent of silicon, 13 to 16 percent of zirconium, 21 to 30 percent of tin, the balance being nickel. The components such as chrome and the like are cleaned, alloyed by the arc melting in the presence of an inert gas to a button-shaped sample, preliminarily cut to a bar-shape and packaged in a quartz tube, the quartz tube is filled with the inert gas to a packaged sample, and the packaged sample is put in a reaction furnace for the relief annealing heat treatment to obtain a bar-shaped sample after heat treatment; and, the bar-shaped sample after heat treatment is cut to a needed shape by a linear cutting method so as to obtain the nickel based boron free brazing material.

Description

technical field [0001] The invention relates to a metal alloy, in particular to a novel low-cost medium-temperature nickel-based boron-free brazing material alloy for stainless steel and a preparation method thereof. Background technique [0002] Brazing technology has a wide range of applications, many of which are difficult or even impossible to connect using traditional welding methods, which can be solved by brazing (1, American Brazing Society. Brazing Handbook [M]. 1982). Because nickel has many physical and chemical properties similar to or similar to stainless steel, nickel-based solder is a good choice for vacuum brazing of stainless steel parts with higher temperatures. [0003] Nowadays, among the widely used nickel-based solders, most of them are still traditional American AWS BNi series and my country's 701 and 702 series solders (1. American Brazing Society. Brazing Handbook [M]. 1982.) . Most of these solders reduce the melting point of the nickel-based syste...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K35/30B23K35/40
Inventor 刘兴军萨百晟王翠萍马云庆张锦斌黄艺雄
Owner XIAMEN UNIV
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