Help with Capacitance Discharge Welding

[ksuengrng]

I am looking for information on Capacitance Discharge Welding. Specifically the requirements, how it works, equipment size, and equipment cost.

I ran into a very rude gentleman at AWS who was absolutely no help at all.

The process in question is the following:

We are trying to attach a steel coupling to a round steel tube. The steel tube is laying horizontally and the coupling is to be installed vertically, or their centerlines/axis' will be normal to one another. This tubing has a formed 1" hole with a radiused neck that protrudes about 3/8" above the surface. Our coupling will be machined down so that the "neck" on the coupling, will rest upon the protruding neck on the round tubing. The coupling has an overall length of about 2", with a diameter of 7/8" from 0"-1" length. The remaining diameter is 1.25".

We have looked at resistance welding, but our tubing is only 0.090" thick, and the resistance welding will buckle our tube. Reasoning for looking at other types of welding, is that these tubes will have already been painted or galvanized, and the coupling(s) need to be installed after this process, with the surface "damage" kept as minimum as possible.

 

[steveh]

Any number of people can help you with CD welding but IMHO the very best at it are the guys at Newcor - Bay City. Don't know their phone number, just look them up on google. We do a lot of CD welding where I work and it is a pretty consistent process.

Steveh