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Micro-plasma arc welding method for molybdenum rhenium alloy foil

A molybdenum-rhenium alloy and plasma arc technology, which is used in plasma welding equipment, welding equipment, welding/welding/cutting objects, etc., can solve the problems of microbeam plasma arc welding research or reports on molybdenum-rhenium alloy foils that have not yet been seen. , to achieve the effect of easy promotion, effective connection and simple process

Active Publication Date: 2018-04-20
SHANDONG JIANZHU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are only researches on the fusion welding of molybdenum-rhenium foils by laser welding and resistance spot welding, and no research or report on micro-beam plasma arc welding of molybdenum-rhenium alloy foils has been seen.

Method used

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  • Micro-plasma arc welding method for molybdenum rhenium alloy foil
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  • Micro-plasma arc welding method for molybdenum rhenium alloy foil

Examples

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Effect test

Embodiment 1

[0025] In this embodiment, the Mo50-Re50 alloy foil is used as the workpiece to be welded, and the size of the foil is 10mm×50mm, and the thickness is 0.133mm.

[0026] The specific Mo50-Re50 alloy foil micro-beam plasma arc welding process steps are as follows:

[0027] (1) Grind the upper and lower surfaces of the Mo50-Re50 alloy foil 4 and 8 welding areas with sandpaper, including the butt curling metal 6, and also polish the unwelded area to make the surface leak metallic luster, and use an ultrasonic cleaner to clean the surface Welding workpieces are cleaned. The specific method is: use 1500# sandpaper to polish the surface area of ​​both sides of the molybdenum-rhenium alloy foil, and use 1200# sandpaper to polish the unwelded area of ​​2~3mm around the edge to make it leak metallic luster; Put the sample into a glass container with acetone, perform ultrasonic cleaning at a temperature of 50°C for 15 minutes, and then perform a second cleaning with alcohol and blow dry...

Embodiment 2

[0035] In this embodiment, the Mo50-Re50 alloy foil is used as the workpiece to be welded, and the size of the foil is 10mm×50mm, and the thickness is 0.122mm.

[0036] The specific Mo50-Re50 alloy foil micro-beam plasma arc welding process steps are as follows:

[0037] (1) Grind the upper and lower surfaces of the Mo50-Re50 alloy foils 4 and 8 with sandpaper, including the butt curling metal 6, and also polish the unwelded areas to make the surface leak metallic luster, and use an ultrasonic cleaner to clean the Welding workpieces are cleaned. The specific method is: use 1500# sandpaper to polish the surface area of ​​both sides of the molybdenum-rhenium alloy foil, and use 1200# sandpaper to polish the unwelded area of ​​2~3mm around the edge to make it leak metallic luster; Put the sample into a glass container with acetone, perform ultrasonic cleaning at a temperature of 50°C for 15 minutes, and then perform a second cleaning with alcohol and blow dry.

[0038] (2) Asse...

Embodiment 3

[0045] In this embodiment, the Mo50-Re50 alloy foil is used as the workpiece to be welded, and the size of the foil is 10mm×50mm, and the thickness is 0.125mm.

[0046] The specific Mo50-Re50 alloy foil micro-beam plasma arc welding process steps are as follows:

[0047] (1) Grind the upper and lower surfaces of the Mo50-Re50 alloy foils 4 and 8 with sandpaper, including the butt curling metal 6, and also polish the unwelded areas to make the surface leak metallic luster, and use an ultrasonic cleaner to clean the Welding workpieces are cleaned. The specific method is: use 1500# sandpaper to polish the surface area of ​​both sides of the molybdenum-rhenium alloy foil, and use 1200# sandpaper to polish the unwelded area of ​​2~3mm around the edge to make it leak metallic luster; Put the sample into a glass container with acetone, perform ultrasonic cleaning at a temperature of 50°C for 15 minutes, and then perform a second cleaning with alcohol and blow dry.

[0048] (2) Asse...

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Abstract

The invention belongs to the field of metal material welding, in particular, relates to a micro-plasma arc welding method for a molybdenum rhenium alloy foil, and specifically, relates to a molybdenumrhenium alloy foil with a thickness of lower than 0.18 mm. The method adopts pulse micro-plasma arc welding; workpieces to be welded are assembled on a tool fixture; and a motor system drives a welding gun to forwards move above a welding line along the welding line to realize welding. The method can realize effective connection of the molybdenum rhenium alloy foil with the thickness of lower than 0.18 mm to obtain a welding joint without such defects as air holes and cracks; and the joint is stable in quality. The method is simple in process and lower in cost, and can meet the requirements on quality and use intensity of the welding joint of the molybdenum rhenium alloy foil.

Description

technical field [0001] The invention belongs to the field of metal material welding, and relates to a welding method for refractory metals, in particular to a micro-beam plasma arc welding method for molybdenum-rhenium alloy foils with a thickness less than 0.18 mm. Background technique [0002] Molybdenum-rhenium alloys are widely used in the fields of chemistry, metallurgy, electronics, aerospace, nuclear industry, and national defense and military due to their excellent high-temperature creep resistance, low-temperature toughness, wear resistance, and corrosion resistance. Electronic components, radar antenna parts, vacuum melting parts, thermocouples and space nuclear reactor thermionic exchanger parts, etc. Among the molybdenum-rhenium alloys, the Mo50-Re50 series alloys have the best overall performance, and their tensile strength at room temperature is greater than 1000MPa. They are usually prepared as foils or wires for use. However, in the actual use process, there...

Claims

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Application Information

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IPC IPC(8): B23K10/02B23K103/08
CPCB23K10/02B23K2103/08
Inventor 刘鹏孙思宇霍玉双史传伟徐淑波孙星任国成
Owner SHANDONG JIANZHU UNIV
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