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Large-area sealing resistance welding process for circumferences of tank body and sealing end cover

A resistance welding, large-area technology, used in resistance welding equipment, welding power sources, welding equipment, etc., can solve the problems of large heat-affected zone, low yield rate, and large equipment footprint, and achieve good pressure resistance and good quality. The effect of high rate and dense weld

Active Publication Date: 2019-08-23
HERON INTELLIGENT EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a large-area sealing resistance welding process for the circumference of the tank body and the sealing end cover, which can output a large current of more than 1 million amperes within 20-30 milliseconds to firmly secure the tank body and the sealing end cover Welded together, using this resistance welding process to complete the welding of the welded tank body and the sealing end cover to prevent the phenomenon of pores, it has the advantages of good sealing and pressure resistance, and it does not need to use during the whole welding process Or use the welding material to directly melt the base metal, which will not produce smog and irritating gas that pollute the environment, and can reduce the demand for welding materials, use energy saving and environmental protection, and have a high yield rate. The use of welding or brazing process to weld the tank body and the sealing end cap requires the use of welding materials. The use of welding materials will produce a lot of smoke and irritating gases that pollute the environment, resulting in poor working environment for the staff and making them hot. Problems of large impact area, large equipment footprint, high production cost, low production efficiency and low yield rate

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Embodiment 1. When adopting the large-area sealing resistance welding process on the circumference of the tank body and the sealing end cap, the diameter is 63 mm, the angle of the inner chamfer at the end is 10-20 degrees, and the angle of the outer chamfer at the end is 40 degrees. When resistance welding is performed on a tank at -50 degrees, the welding pressure of the capacitor energy storage resistance welding machine is set to 50000N, the first welding voltage of the capacitor energy storage resistance welding machine is set to 530V, and the tempering welding of the capacitor energy storage resistance welding machine The voltage is set to 500V, and the welding peak current of the capacitor energy storage resistance welding machine is set to 350A-400KA; as the preferred chamfer angle, the angle of the inner chamfer at the end of the tank is set to 15 degrees, and the inner chamfer at the end of the tank is The angle is set to 45 degrees.

Embodiment 2

[0030]Embodiment 2: When adopting the large-area sealing resistance welding process of the tank body and the sealing end cover circumference, the diameter is 80 mm, the angle of the inner chamfer of the end is 10-20 degrees, and the angle of the outer chamfer of the end is 40 degrees When resistance welding is performed on a tank at -50 degrees, the welding pressure of the capacitor energy storage resistance welding machine is set to 50000N, the first welding voltage of the capacitor energy storage resistance welding machine is set to 560V, and the tempering welding of the capacitor energy storage resistance welding machine The voltage is set to 540V, and the welding peak current of the capacitor energy storage resistance welding machine is set to 350A-400KA; as the preferred chamfer angle, the inner chamfer at the end of the tank is set to 15 degrees, and the inner chamfer at the end of the tank is set to 45 degree.

[0031] The large-area sealing resistance welding process o...

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PUM

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Abstract

The invention provides a large-area sealing resistance welding process for circumferences of a tank body and a sealing end cover. By the adoption of the process, a large current can be output within ashort time, and the short time means time shorter than 20-30 milliseconds, the large current refers to the current of 1 million amps or more, and few grids are required; and the joint between the tank body and the sealing end cover which are welded has the beneficial effects of the tight weld seam, good sealing and good pressure resistance. The base material can be directly melted without the help of or use of welding materials in the whole process of welding, no fume polluting the environment and irritating gases are generated, the floor space of the equipment can be reduced and the requirement for the welding materials can be reduced compared to furnace brazing, the energy-saving and environmentally friendly use is realized, and the yield is high.

Description

technical field [0001] The invention relates to a large-area sealing resistance welding process on the circumference of a tank body and a sealing end cover. Background technique [0002] The inlet and outlet of the existing container tanks are generally connected through threaded ports, and the welding process of the tank body seal is basically welded by arc welding or brazing process, whether arc welding or brazing process is used To weld the seal of the tank body, it has the disadvantages of large heat-affected zone, large equipment footprint, high production cost and low production efficiency, and it needs to use welding materials in the welding process, and the use of welding materials will A large amount of smoke and irritating gas polluting the environment are produced, resulting in a poor working environment for the staff, which does not meet the requirements of the enterprise's environmental protection production. Especially for products welded by brazing technology...

Claims

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Application Information

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IPC IPC(8): B23K11/24B23K11/36
CPCB23K11/36B23K11/24
Inventor 邹春芽
Owner HERON INTELLIGENT EQUIP CO LTD
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