Spot Welding Supplies - Electrodes, Holders, and Accessories - Tuffaloy Products
The basic materials in all Tuffaloy electrodes are produced to rigid standards of quality and uniformity. The superior performance of these electrodes in your plant depends upon their correct application to the particular job, and proper maintenance in service. Many factors affecting electrode cost and useful electrode life are briefly outlined below.
STANDARD GAUGE CHART
THICKNESS IN DECIMALS OF AN INCH
The RWMA tip numbering system has generally replaced the old Morse taper numbers with new "RW" numbers, and has added two new sizes, as the chart illustrates.
ELECTRODE LIFE SAVERS
1Use standard Tuffaloy electrodes with Tuffaloy ejector type, self-adjusting tube, water-cooled electrode holders wherever possible. Avoid special or irregular shapes for lowest cost.
2 Use ample cold cooling water as close as practical to the welding contact surface, properly circulated at a minimum of 30-psi pressure, and supplied at a rate of at least 1-1/2 gallons per minute.
3 Be sure to select the proper type and size of electrode, taking into consideration electrode pressure, contact area of electrode, gauge, and nature of material to be welded. Consult the R.W.M.A. Manual* or your Tuffaloy field engineer regarding recommended practices. Overloading as well as overheating shortens electrode life.
4 Good welds depend upon properly maintained electrodes which assure an accurate surface contact. Keep tapers clean and dress electrode faces with lathe, emery paddle or fine file. Use castor oil or graphite grease to facilitate tip removal, and avoid application of insulators such as white lead and other materials.
* Resistance Welding Manual, published by the Resistance Welder Manufacturers Associations, 1900 Arch St., Philadelphia PA 19103.