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Electron beam welding method for producing manganin diverter

A technology of electron beam welding and manganese copper shunt, which is applied in the direction of electron beam welding equipment, welding equipment, metal processing equipment, etc., can solve the problems of increasing material cold brittleness, affecting product quality, cracks at welds, etc., and achieve improved strength , improve the welding quality, the effect of tight weld seam

Active Publication Date: 2021-06-25
JIANGSU JINGYI ELECTRICAL APPLICANCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, due to the excellent thermal conductivity and large thermal expansion coefficient of copper and copper alloys, other elements in copper and copper alloys such as manganese, phosphorus, sulfur and other elements can form eutectics with low melting points with copper, which will increase the cold brittleness of the material , leading to cracks and cracks at the weld, which will seriously affect product quality

Method used

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  • Electron beam welding method for producing manganin diverter
  • Electron beam welding method for producing manganin diverter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] like Figure 1-2 Shown, a kind of electron beam welding method of producing manganin shunt comprises the following steps:

[0030] (1) Clean the surface: clean the surface of the resistance alloy assembly and the electrode assembly that make up the manganin shunt, use a sodium bicarbonate solution with a mass concentration of 10% for surface degreasing, then use hot water to clean the surface, and Dry surface moisture;

[0031] (2) Component assembly: Assemble the resistance alloy component and the electrode component according to the assembly requirements of the manganese-copper shunt, and add a layer of aluminum powder at the place where the resistance alloy component and the electrode component need to be welded. The thickness of the aluminum powder is 10 μm. After assembly The components are fixed;

[0032] (3) Vacuuming: Place the fixed components in the electron beam welding chamber, and vacuumize the electron beam welding chamber so that the vacuum degree in th...

Embodiment 2

[0041] like Figure 1-2 Shown, a kind of electron beam welding method of producing manganin shunt comprises the following steps:

[0042] (1) Clean the surface: clean the surface of the resistance alloy assembly and the electrode assembly that make up the manganese-copper shunt, use a sodium bicarbonate solution with a mass concentration of 15% for surface degreasing, then use hot water to clean the surface, and Dry surface moisture;

[0043] (2) Component assembly: Assemble the resistance alloy component and the electrode component according to the assembly requirements of the manganese copper shunt, and add a layer of aluminum powder at the place where the resistance alloy component and the electrode component need to be welded. The thickness of the aluminum powder is 30 μm. After assembly The components are fixed;

[0044] (3) Vacuuming: Place the fixed components in the electron beam welding chamber, and vacuumize the electron beam welding chamber so that the vacuum degr...

Embodiment 3

[0053] like Figure 1-2 Shown, a kind of electron beam welding method of producing manganin shunt comprises the following steps:

[0054] (1) Clean the surface: clean the surface of the resistance alloy assembly and the electrode assembly that make up the manganin shunt, and use a sodium bicarbonate solution with a mass concentration of 12% for surface degreasing, then use hot water to clean the surface, and Dry surface moisture;

[0055] (2) Component assembly: Assemble the resistance alloy component and the electrode component according to the assembly requirements of the manganese-copper shunt, and add a layer of aluminum powder at the place where the resistance alloy component and the electrode component need to be welded. The thickness of the aluminum powder is 20 μm. After assembly The components are fixed;

[0056] (3) Vacuuming: Place the fixed components in the electron beam welding chamber, and vacuumize the electron beam welding chamber so that the vacuum degree i...

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Abstract

The invention provides an electron beam welding method for producing a manganin diverter, and belongs to the technical field of manganin diverter processing. The method comprises the following operation steps: (1) cleaning the surface; (2) assembling components; (3) vacuumizing; (4) preheating treatment; (5) primary welding; (6) heat preservation treatment; (7) secondary welding; (8) heat treatment; (9) quenching; and (10) heat preservation treatment. According to the electron beam welding method for producing the manganese-copper diverter, aluminum powder is added to a welding seam of a manganin alloy and a copper material electrode, electron beam heating melting is conducted on the aluminum powder, and therefore the purpose of welding the manganin alloy and the copper material electrode is achieved, lines and cracks of the welding seam can be avoided, and the product quality is effectively improved.

Description

technical field [0001] The invention belongs to the technical field of processing manganin shunts, and in particular relates to an electron beam welding method for producing manganin shunts. Background technique [0002] The shunt is a common alloy resistor, mostly made of manganese-copper alloy material. The manganese-copper alloy resistance material has a small temperature coefficient of resistance, high resistance long-term stability, extremely low thermal electromotive force, and good working performance. And good weldability and processability. Since the electrode material of the manganin shunt and the resistance alloy are different metals, the manganin shunt is generally welded by vacuum high-energy electron beams, and the directional high-speed electron beam is used to hit the workpiece to convert kinetic energy into heat energy and melt the workpiece to form Weld seam, electron beam welding has the advantages of no welding rod, not easy to oxidize, good process repe...

Claims

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Application Information

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IPC IPC(8): B23K15/00
CPCB23K15/00B23K15/0006B23K15/0046
Inventor 刘大兵刘洋李隐宪
Owner JIANGSU JINGYI ELECTRICAL APPLICANCE
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