Claims
- 1. The process of arc welding a joint along a path while the size of the weld puddle in the joint is selectably adjusted in response to location of the arc along the path, comprising the steps of:
- establishing an electric arc with the material being welded so as to create a weld puddle of molten metal at a location on the joint;
- moving the arc to traverse the path being welded;
- supplying preheated filler metal to said weld puddle while moving said arc; and
- adjusting the amount of supplied filler metal by controlling the preheating of said filler metal and the rate at which said preheated filler metal is supplied to said weld puddle, in response to a selectably variable function of the location of said arc along said path, so that the size of said weld puddle at each location on the path is adjustable to the puddle size previously determined for said locating along said path.
- 2. The process of claim 1, wherein said welding occurs about a circumferential joint of a pipe, and said arc is moved along a circular path approximately concentric with said joint.
- 3. The process of claim 1, wherein said electric arc is a nonpulsed electric arc.
- 4. The process of arc welding a joint along a path while the size of the weld puddle in the joint is selectably adjusted in response to the location of the arc along the path, comprising the steps of:
- establishing an electric arc with the material being welded so as to create a weld puddle of molten metal at a location on the joint;
- moving the arc to transverse the path being welded;
- supplying preheated filler metal to said weld puddle while moving said arc; and
- adjusting the amount of said filler metal by controlling the preheating of said filler metal in response to a selectably variable function of the location of said arc along said path, so that the size of said weld puddle at each location on the path is adjusted to the puddle size previously determined for said locations along said path.
Parent Case Info
This is a division of application Ser. No. 654,975, filed Feb. 3, 1976, now U.S. Pat. No. 4,145,593.
US Referenced Citations (4)
Non-Patent Literature Citations (1)
Entry |
A. J. Weissberger, "Microprocessors Simplify Industrial Control", Electronic Design 22, 10/25/75, pp. 96-98. |
Divisions (1)
|
Number |
Date |
Country |
Parent |
654975 |
Feb 1976 |
|