Patent ID: 6401336
Filing Date: 2002-06-11
Classification: B05B,B23K,Y10T

Abstract:
A method for attaching a spray gun plug seat to a valve stem, comprising:first attaching a valve plug to a first electrode, wherein said valve plug is approximately 97% to 87% tungsten carbide and approximately 3% to 13% cobalt; second attaching a holder for said valve plug to a second electrode, wherein said holder has a first end for contacting said valve plug, and a second end for receiving said valve stem; pressing said valve plug and said holder together with at least a predetermined force in a range of approximately 10 to 40 kilograms; causing an electrical current to flow between said valve plug and said first end, during said step of pressing, wherein said current is effective for providing a resistance weld for securing said valve plug and said holder together, providing a stem end of said valve stem within a bore of said holder, said bore open to said second end; and securing said stem end within said bore.