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Resistance Projection Welding for Titanium Sheet Metal

IP.com Disclosure Number: IPCOM000047908D
Original Publication Date: 1983-Dec-01
Included in the Prior Art Database: 2005-Feb-08
Document File: 2 page(s) / 21K

Publishing Venue

IBM

Related People

Goodrich, RA: AUTHOR

Abstract

When titanium pieces of sheet material are to be joined by resistance projection welding, the projection should be relatively small in height so that the cycle time can be kept short. If the cycle time is not short, the titanium material will be annealed. The projections 3 should be formed in the thicker piece of material when joining pieces of unequal thickness. This is because the thicker piece 2 requires more heat for a good weld. The electrodes 5 are made from Group A, Class 2 RWMA (Resistance Welder's Manufacturing Association) material where the electrode 5 for the thicker piece of material is faced with Group B, Class 11 RWMA material 6.

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Resistance Projection Welding for Titanium Sheet Metal

When titanium pieces of sheet material are to be joined by resistance projection welding, the projection should be relatively small in height so that the cycle time can be kept short. If the cycle time is not short, the titanium material will be annealed. The projections 3 should be formed in the thicker piece of material when joining pieces of unequal thickness. This is because the thicker piece 2 requires more heat for a good weld. The electrodes 5 are made from Group A, Class 2 RWMA (Resistance Welder's Manufacturing Association) material where the electrode 5 for the thicker piece of material is faced with Group B, Class 11 RWMA material 6. The thinner piece 1, in this instance, is a channel, and the sides of electrodes 7 must be insulated to prevent the shorting of weld current, should they come into contact with the upright legs of the channel. Also, any clamps used for clamping pieces 1 and 2 together must be insulated or be made of non-conductive material so as to avoid shunting the weld current.

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