Cobalt based TIG- and oxy acetylene welding rod for hardfacing where maximum resistance to wear and corrosion at red heat temperature (up to 900-1.000 °C (1.650-1.830 °F)) is required.
Deposit machinable only with hard metal tools.
Excellent resistance to impact and thermal shocks and good resistance to acetic and nitric acid, organical chemical products such as: petroleum, plastic, rubber and resins, even liquid metals such as aluminium and zinc.
Also suitable for the food and pharmaceutical industry.
Warm cutting tools, metal shear blades, stone breakers, hammers, valves and valve seats of combustion motors, glass cutting tools, shafts and pump bearings.
Hardness: 38-46 HRC.
Hot hardness: approx. 31 HRC @ 600 °C.
Remove all rust and dirt. Sharp edges should be rounded.
Heat the base metal until it ’sweats’ (no melting).
Use a carburising flame, length of the feather approx. 2.5 to 3 times the length of the inner cone.
The surfacing can be lightly re-melted for optimum homogeneity.
Avoid too much dilution by using an as low as possible welding current.
For TIG welding, apply at least 2 layers in order to obtain the desired characteristics. (To avoid too much dilution with the base metal.)
On difficult to weld metals a base layer with Lastek 982 is recommended.