Radiation-heating and electrification-resistance-heating combined type welding device

Abstract

The invention belongs to the technical field of welding equipment, and discloses a radiation-heating and electrification-resistance-heating combined type welding device. The radiation-heating and electrification-resistance-heating combined type welding device comprises a pressurization electrode, a fixed electrode, an electrification resistance heating power supply, an electric resistance wire, avacuum sucking pump group, a pressurization system, a weldment A, a weldment B, a brazing filler and a vacuum chamber, wherein the vacuum sucking pump group is connected with the vacuum chamber; the upper part and the lower part of the vacuum chamber are connected with the pressurization electrode and the fixed electrode; the middle parts of the pressurization electrode and the fixed electrode areconnected with the electrification resistance heating power supply; the weldment A, the weldment B and the brazing filler are placed at the end parts; and the pressurization electrode is connected with the pressurization system. According to the device and a process method, vacuum is adopted, so that the protection during the electrification resistance welding is realized, and components are connected under the vacuum condition; meanwhile, a radiation heat source is externally added, so that the temperature uniformity of the whole structure is realized, and the liquid brazing filler is effectively promoted to be wet and spread; and through electrification heating, the heating time of brazing is reduced, so that the welding efficiency and the joint strength are effectively improved.

Description

technical field [0001] The invention of the device of the invention belongs to the technical field of welding equipment, and in particular relates to a combined welding device of radiation heating and electric resistance heating. Background technique [0002] Brazing is a welding method that uses various external heat to melt the solder between the metals to be connected, but connects the weldments as a whole without melting. The problem with brazing at present is that the welding cycle is very long, and it needs to be heated by radiation in a vacuum furnace for several hours, and then heat preservation for welding, which is inefficient and increases the cost. [0003] Resistance welding is a high-efficiency, low-cost welding method that combines the weldments and applies pressure through the electrodes, relying on the resistance heat generated by the current passing through the weldments to achieve welding. At present, resistance heat welding realized by energization mainl...

AI Technical Summary

Problems solved by technology

Resistance brazing is a method of welding by resistance heat, but the protection effect is not good, the welding effect is poor, and the overall heating of the parts to be welded is uneven, and the welding quality, especially the welding strength, is generally relatively low

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