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An intermediate layer alloy for tantalum/stainless steel energy storage welding, its preparation method and welding method

An intermediate layer and stainless steel technology, applied in energy storage discharge welding, welding equipment, welding medium, etc., can solve the problems of hard and brittle intermetallic compounds, difficult to obtain high-performance tantalum-steel composite structure, etc., and achieve comprehensive mechanical properties of joints Improvement, low cost, good matching effect

Active Publication Date: 2021-04-02
XIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It solves the welding problem that the existing welding method is easy to form hard and brittle intermetallic compounds, and it is difficult to obtain high-performance tantalum-steel composite structure

Method used

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  • An intermediate layer alloy for tantalum/stainless steel energy storage welding, its preparation method and welding method
  • An intermediate layer alloy for tantalum/stainless steel energy storage welding, its preparation method and welding method
  • An intermediate layer alloy for tantalum/stainless steel energy storage welding, its preparation method and welding method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] According to the preparation method of the above-mentioned high-entropy interlayer alloy, select the elements and contents of each component according to the data of the high-entropy interlayer alloy Example 1 listed in Table 1, and control the roll surface line speed at 5m / s, and prepare a product with a thickness of about 5m / s. Ta of 130μm, width about 5mm, length about 0.5m 10 Fe 5 Ni 22 Cr 23 Cu 15 co 25 High entropy interlayer alloy foil. Set the working parameters of the energy storage welding machine: welding voltage U=900V, welding pressure F=40kN, capacitance C=1500μF. The high-entropy intermediate layer alloy foil is used to perform energy storage welding on tantalum / steel, and the strength of the welded joint is about 305MPa.

Embodiment 2

[0051] According to the preparation method of the above-mentioned high-entropy interlayer alloy, the elements and contents of each component are selected according to the data of the high-entropy interlayer alloy Example 2 listed in Table 1, and the surface speed of the roll is controlled at 5m / s to prepare a product with a thickness of approx. Ta of 130μm, width about 5mm, length about 0.5m 7 Fe 8 Ni 25 Cr 20 Cu 18 co 22 High entropy interlayer alloy foil. Set the working parameters of the energy storage welding machine: welding voltage U=1000V, welding pressure F=35kN, capacitance C=1000μF. The high-entropy intermediate layer alloy foil is used to perform energy storage welding on tantalum / steel, and the strength of the welded joint is about 340MPa.

Embodiment 3

[0053] According to the preparation method of the above-mentioned high-entropy interlayer alloy, the elements and contents of each component are selected according to the data of the high-entropy interlayer alloy Example 3 listed in Table 1, and the surface speed of the roll is controlled at 5m / s to prepare a product with a thickness of approx. Ta of 130μm, width about 5mm, length about 0.5m 5 Fe 10 Ni 20 Cr 15 Cu 20 co 20 High entropy interlayer alloy foil. Set the working parameters of the energy storage welding machine: welding voltage U=1100V, welding pressure F=30kN, capacitance C=500μF. The high-entropy intermediate layer alloy foil was used to perform energy storage welding on tantalum / steel, and the strength of the welded joint was about 289MPa.

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Abstract

The invention discloses intermediate layer alloy for tantalum / stainless steel energy storing welding and a preparation method thereof and a welding method of the two heterogeneous metal. The intermediate layer alloy foil with certain thickness is placed between tantalum and steel plates to be welded; and welding is conducted in an energy storing welding mode, and therefore interfacial resistance hot-melts the intermediate layer alloy and local base metal, and high performance tantalum / steel welding is achieved. The invention further discloses the intermediate layer alloy in the method. The intermediate layer alloy is prepared from the raw materials by atomic percent, 5-10% of Ta, 5-10% of Fe, 20-25% of Ni, 15-23% of Cr, 15-22% of Cu, and 20-25% of Co. According to the method and the intermediate layer alloy thereof, during welding, the matching performance between the tantalum and the stainless steel is high, the molten nucleus is a single-phase Fcc solid solution structure, joint comprehensive mechanical property is high, the preparation method of the intermediate layer alloy foil is simple, and the cost is low.

Description

technical field [0001] The invention belongs to the field of welding technology, and in particular relates to an intermediate layer alloy for energy storage welding of tantalum stainless steel, a preparation method thereof and a welding method of two metals. Background technique [0002] Tantalum metal has the advantages of high density, high melting point, corrosion resistance, and good processing performance. It is widely used in electronics, chemical industry, aerospace and other fields, but its high price limits its further development and application. Steel is cheap and has good thermoelectric and mechanical properties. The tantalum-steel composite structure is commonly used in engineering, which can not only give full play to the advantages of the respective materials of the base layer and the cladding layer, but also is the best way to save precious metals. It has obvious social effects and advantages in improving material utilization, reducing structural weight, and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K11/11B23K11/26B23K11/34B23K35/30B23K103/18
CPCB23K11/115B23K11/26B23K11/34B23K35/0255B23K35/30
Inventor 翟秋亚徐锦锋杨全虎
Owner XIAN UNIV OF TECH
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