Cooling ring for welding bellows generating less metal powder

Abstract

The present invention pertains to a cooling ring for welding bellows, a cooling ring for welding used in the manufacture of bellows, which include multiple pairs of diaphragms, wherein a pair of diaphragms are formed of a first diaphragm and a second diaphragm disposed to face the first diaphragm. The cooling ring includes: an arc-shaped main body which is disposed to bring the first diaphragm and the second diaphragm into contact with each other in the state in which the main body is in contact with the first diaphragm and / or the second diaphragm, and includes copper; and a plating layer which is plated on the main body, wherein the plated layer includes at least one selected from the group consisting of nickel and chromium. Since the present invention is provided with the arc-shaped main body, which includes copper, and with the plating layer, which is plated on the main body, the present invention does not generate, during welding, the powder of metals such as copper, aluminum, gold, silver or the like, which have high electric conductivity.

Description

technical field [0001] The present invention relates to a cooling ring for bellows welding, in particular to a cooling ring for bellows welding which does not generate metal dust of high-conductivity metal copper, aluminum, gold, silver, etc. during welding. Background technique [0002] Bellows is a corrugated tube that can perform telescopic movement while maintaining airtightness inside and outside. It is often used in vacuum equipment, semiconductor manufacturing equipment, small industrial equipment, precision machinery, etc. [0003] figure 1 An example of a bellows 100 is shown. In general, the bellows 100 is used in a state where both ends of the bellows 1 are joined to each other. In the state where a plurality of pairs of diaphragms (10, 20) formed by the first diaphragm 10 and the second diaphragm 20 arranged opposite to the first diaphragm 10 are arranged in a row, the adjacent first diaphragm 10 and the second diaphragm 20 are connected alternately so as to h...

AI Technical Summary

Problems solved by technology

In particular, since the nature of copper is such that it is chemically stable and has excellent adsorption properties, it is difficult to remove copper dust from the surface of the bellows 100 even by spraying high-pressure air or chemical cleaning.

Therefore, the copper dust remaining on the outer peripheral surface of the bellows 100 must be manually removed one by one by the operator, which is very inconvenient.

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