A kind of titanium-based composite brazing filler metal and its preparation and brazing method

A technology of titanium-based composite materials and composite solder, which is applied in welding equipment, manufacturing tools, welding media, etc., can solve the problems of poor wettability and low mechanical properties of solder, and achieve high mechanical strength and uniform weld structure Small size, excellent high-temperature mechanical properties

Active Publication Date: 2021-01-15
衢州天力紧固件有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to improve the problems of low mechanical properties and poor wettability of the solder used for brazing and connecting titanium-based composite materials, improve the shear strength of brazed joints, provide a titanium-based composite solder and its preparation method, titanium brazing method for matrix composites

Method used

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  • A kind of titanium-based composite brazing filler metal and its preparation and brazing method
  • A kind of titanium-based composite brazing filler metal and its preparation and brazing method

Examples

Experimental program
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Effect test

Embodiment 1

[0034] 1. Prepare titanium-based composite solder according to the following method

[0035] 1) Weigh the solder element powder on an electronic scale according to the mass percentage of Ti-20Ni-5Al-5Zr+1%C, wherein Ti is 69 parts by mass, Ni is 20 parts by mass, Al is 5 parts by mass, and Zr is 5 parts by mass parts by mass, and C is 1 part by mass.

[0036] 2) The alloying element powders with the above proportions are placed in an induction melting furnace and melted repeatedly 4 times to ensure that a solder alloy with a uniform structure is obtained. After cooling, a brazing filler metal ingot with uniform and fine composition is obtained.

[0037] 3) Place the above-mentioned ingot in the quartz tube in the vacuum stripping machine, and wait for melting again.

[0038] 4) Before melting, pump the vacuum in the vacuum belt machine to 8×10 -3 Pa, and then pass through the argon to wash the furnace, and then evacuate again to a vacuum degree of 8×10 -3 Pa, to avoid the ...

Embodiment 2

[0048] Using the Ti-20Ni-5Al-5Zr+1%C titanium-based composite solder prepared in Example 1, the TMCs titanium-based composite material base metal is brazed, and the temperature is raised to 1040 ° C for the second time and then kept for 30 minutes. Other conditions Same as Example 1.

Embodiment 3

[0050] Adopt the Ti-20Ni-5Al-5Zr+1%C titanium-based composite solder prepared in Example 1 to braze the TMCs titanium-based composite material base metal, heat it for 30 minutes after the second temperature rise to 1060 ° C, and other conditions Same as Example 1.

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Abstract

The invention discloses titanium-based composite brazing filler metal. The titanium-based composite brazing filler metal is Ti-20Ni-5Al-5Zr+1%C, wherein mass percent of the Ni is 20%, mass percent ofthe Al is 5%, mass percent of the Zr is 5%, mass percent of the C is 1%, mass percent of the Ti is 69%, and the thickness of the brazing filler metal is 30[mu]m-50[mu]m. The Ti-20Ni-5Al-5Zr+1%C titanium-based composite brazing filler metal disclosed by the invention has very good wettability, and the brazing filler metal can be adopted to realize good connection of the titanium-based composite material, so that braze-welding of other titanium-based composite materials is also adapted.

Description

technical field [0001] The invention relates to the field of brazing, in particular to a titanium-based composite solder and its preparation and brazing methods. Background technique [0002] Titanium and titanium alloys are widely used in aerospace, military, chemical, petroleum and other fields because of their high strength ratio, specific modulus, high strength, good corrosion resistance, and high heat resistance. The most important and promising fields of titanium and titanium alloys are in the military and aerospace fields, but with the rapid development of science and technology, the limit of service temperature and mechanical properties of titanium and titanium alloys can no longer meet the development of science and technology, so the research side The center of gravity has a tendency to shift from titanium and titanium alloys to titanium matrix composites. [0003] Titanium-based composite materials refer to titanium-based composite materials developed for the lac...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K1/008B23K1/20B23K35/32B23K35/40
CPCB23K1/008B23K1/20B23K1/206B23K35/325B23K35/40
Inventor 朱冬冬徐海涛董多贺庆倪成员周兆忠
Owner 衢州天力紧固件有限公司
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