|Typical Welding Parameters for GTAW, GMAW & SAW Processes
||GMAW Short Circuiting
|Wire Diameter (in)
|Welding Current (amps)
|Welding Voltage (volts)
|Wire Feed Speed (in/mm)
|Travel Speed (in/mm)
|Shielding Gas (flux)
||NiCoBRITE® or Argon + Helium
||NiCoBRITE® + Argon
||Lincold Blue max. 2000
|Gas Flow Rare (CFH)
|Typical Welding Parameters for SMAW Process (Direct Current-reverse Polarity)
Covered electrodes used from an unopened container require no further drying. Unused electrodes should be stored in a temperature-controlled oven that is held in the range 250 to 400°F (121 to 204°C).
NOTE: These guidelines are based upon welding studies conducted under laboratory conditions. For other welding conditions, these guidelines may not represent the optimum procedures, however, they can be useful starting points.
Machining and Grinding
ULTIMET® weld deposits can be finished by conventional machining and grinding operations. It should be noted that this alloy will work-harden rapidly to hardness values as high as Rockwell “C” 50. Care must therefore be used during machining to control tool chatter and tool wear. Positive rake angle tools are recommended with heavy, constant feeds to maintain positive cutting action. Grinding is accomplished using standard wheels, parameters and lubricants. Because the alloy work-hardens easily, a positive cutting action is again recommended. The grinding wheel should be selected so that it breaks down easily and continually exposes fresh cutting surfaces.
Establish safe working conditions before the start of welding operations. Areas to consider should include protection of personnel, ventilation and welding in confined spaces. The recommendations of the American National Standard ANSI/ACS Z49.1, “Safety in Welding and Cutting,” should be followed. Cobalt-based alloys may contain, in varying concentrations, the following elemental constituents: aluminum, cobalt, chromium, copper, iron, manganese, molybdenum, nickel, and tungsten. For specific concentrations of these and other elements present in ULTIMET® alloy, refer to the Material Safety Data Sheet (MSDS) that is available from Haynes International, Inc. (Bulletin H-2071).
The data and information in this publication are based upon work conducted principally by Haynes International, Inc. and occasionally supplemented by information from the open literature, and are believed to be reliable. However, Haynes International, Inc. does not make any warranty or assume any legal liability or responsibility for its accuracy, completeness, or usefulness. Haynes also makes no warranty of results to be obtained for any particular use of the information herein contained. Material safety data sheets are available from Haynes International, Inc. ULTIMET® and NiCoBRITE are trademarks of Haynes International, Inc. STELLITE is a trademark of Deloro Stellite, Inc.