NICKEL CLADDING

By BMcB63 Date 02-23-2006 15:57

Has anyone ever experienced pin holes when applying 99% nickel to mild steel, all prameters meet supplier requirements but still getting the pin holes. sheilding gas is 98/2 argon oxygen using spray transfer plate is preheated to 200. any suggestions

By 803056

Date 02-24-2006 03:21

This may sound silly, but what have you done to clean and prepare the surface of the carbon steel before welding?

Best regards - Al

By EU Engee Date 03-25-2006 13:18

Hello
May be this is to late with my comments but sometimes may help
removing conventional spring-insert from the torch & changing onto the new one with teflon guide also - the current tip of the torch shall be changed more frequently,
besides I like better 2%CO2 than 2%O2.
Improoving goes good with pulsed GTAW - 90Hz, basis ca100, peak150.