Department of the Army

Operator's Circular Welding Theory and Application Department of the Army

This training circular, TC 9-237, "Operator's Circular Welding Theory and Application: Reporting Errors and Recommending Improvements," is published for use by personnel concerned with welding and other metal joining operations in the manufacture and maintenance of materiel. Welding is any metal joining process wherein coalescence is produced by heating the metal to suitable temperatures, with or without the application of pressure and with or without the use of filler metals. Basic welding processes are described and illustrated in this manual. Brazing and soldering, procedures similar to welding, are also covered.