Titanium-based amorphous brazing alloy foil strip for brazing and preparation method for foil strip

A brazing filler metal, titanium-based technology, applied in the direction of welding equipment, welding/cutting medium/material, welding medium, etc., can solve the adverse effects of intermetallic compound joint performance, titanium-based powder brazing filler metal can not meet the requirements of small structural parts and complex structures Problems such as the use of parts and low liquidus temperature, etc., to improve the assembly difficulty, superior brazing process, and improve the effect of band formation
CN102430874AInactive Publication Date: 2012-05-02BEIJING UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
BEIJING UNIV OF TECH
Publication Date
2012-05-02
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a titanium-based amorphous brazing alloy foil strip for brazing and a preparation method for the foil strip. Components of the brazing alloy foil strip by percentage include 35-50% of Ti (titanium), 25-35% of Zr (zirconium), 10-24% of Cu (copper), 5-15% of Ni (nickel) and 0.5-8% of Co (cobalt). The method for preparing the brazing alloy foil strip includes the steps: weighing raw materials according to the proportion to prepare ingredients; placing the ingredients into a crucible and smelting the ingredients for at least three times in a high-purity argon state to obtain brazing alloy ingots; crushing the brazing alloy ingots and then placing the crushed brazing alloy ingots into a quartz tube; pumping a furnace chamber into high vacuum and then charging high-purity argon; turning on a copper roller power supply and setting the range of rotating speeds; and heating the quartz tube, spraying melts in the quartz tube onto a copper roller rotating at a high speed and forming the titanium-based amorphous brazing alloy foil strip under the condition of quenching. The brazing alloy foil strip has the advantages of surface brightness, uniformity of composition and the like, the negative effects of eutectic composition brazing alloy brittleness and over-high welding temperature on base metal can be avoided, and assembly and gap filling are easier when complex structural components are brazed.
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Description

technical field

[0001] The invention relates to a titanium-based material, in particular to a titanium-based amorphous solder foil for brazing and a preparation method thereof. Background technique

[0002] With the increasing application of new materials such as titanium and titanium-based alloys, zirconium alloys, and functional ceramics in aerospace, brazing connections have shown outstanding advantages in the preparation of complex structural parts and precision parts. In the brazing process of these materials, titanium-based solder is widely used due to its advantages such as oxidation resistance, corrosion resistance, and good joint performance. At present, Ti-Cu-Ni, Ti-Zr-Cu, Ti-Zr-Ni, Ti-Zr-Be, Ti-Zr-Cu-Ni and other ternary and quaternary titanium-based solders have been formed. The chemical properties of titanium are active, and it can react with many elements under high temperature conditions to form brittle intermetallic compounds. Since titanium-based solder oft...

Claims

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