Figure 6-20.-Grader blade with hardfacing material applied to cutting edge.

cone. Unless the excess fuel-gas flame is used, the proper base metal surface condition cannot be developed. Without this condition, the surfacing alloy does

Figure 6-20 shows a grader blade with a deposit of an hardfacing material applied along the cutting edge. A grader blade is usually wearfaced by the electric arc process. If the electric arc process is not available, you may use the oxygas torch. not spread over the surface of the part.

Welding Materials Handbook, NAVFAC P-433, is excellent source of information for wearfacing construction equipment.