Patent ID: 9457432
Filing Date: 2016-10-04
CPC Classification: B23K

Claim Text:
1. A welding system, comprising: an arc welding power supply coupled to an arc welding torch for performing an arc welding operation on a coated work piece to create a weld joint; and a high energy beam power supply coupled to a high energy beam source which directs a high energy beam at a coated surface of said work piece, wherein said high energy beam is directed at said coated surface upstream of said arc welding torch; wherein said high energy beam has an energy density sufficient to remove at least a portion of said coating from said work piece but does not substantially melt said work piece; and wherein said arc welding power supply provides a weld joint having a cross-sectional porosity in the range of 5 to 20%, a length porosity in the range of 0 to 30% and a spatter factor in the range of 0 to 3, where spatter factor is the ratio of weld spatter weight in mg over consumed filler metal weight in kg for a length of said weld joint.