Solid Fillet Welding of Tools
Another interesting application area of the solid fillet welding is the renewal of solid tools such as blades, staple dies, cutting edges and deep drawing dies. "Gradually solidifying welding" is successful in this application area. The welding is performed at delayed transformation temperature between the perlite and bainite areas at TTT curve of the steel. So it is ensured that the hardenability of the steel is avoided. The welding temperatures are usually between 400°C and 600°C. "Intermittent welding method" is based on the fact that the austenitic transformation in these types of steels is delayed at specific temperatures.
Process order in solid fillet welding
a) Slowly heating the workpiece to the annealing temperature. At this temperature the structure is completely transformed into austenite.
b) Cooling down to the temperature at which the intermittent welding will be performed; this is the temperature point at which the austenitic transformation delay (relatively to the TTT curves) is most visible.
c) Performing the welding process at this temperature
d) Cooling down the workpiece at ambient conditions or in oil (to between 50°C and 150°C)
e) Tempering the workpiece at tempering temperature; in high-speed steels this temperature is between 550°C and 570°C.
f) Processing the welding area.
MAGMAWELD offers a wide range of suitable solutions and products for most of the abrasion issues such as coated electrodes, cored wire, solid wires for inert gas and submerged welding and submerged welding powders. The technical data of those products include the areas of application as well as all the technical properties.
At MAGMAWELD, we will be glad to provide you with the necessary technical support on your specific abrasion issues to resolve such issues with solid fillet welding.