Method and apparatus for administering a welding gas to the inner region of a workpiece to control the welding penetration profile

摘要

A method for controlling a weld penetration profile on a workpiece (306) having an outer region and an inner region is described. The method includes the step of using a welder (302) to administer energy to the outer region of the workpiece to create a weld pool (304). The method also includes infiltrating the workpiece (306) so that the weld pool (304) spans between the outer region and the inner region, and shielding gas in the inner region at a pressure that provides a force that limits weld penetration. Administering. Corresponding devices are also defined. [Selection] Figure 6