Buildup 300 is commonly used for the buildup and overlaying of all ferrous metals subjected to moderate abrasion, severe impact and corrosion. Typical applications would include tractor rollers, sprockets, idlers, concrete mixer blades, bearing journals and other parts which require machinable weld deposits.

PROCEDURES
Clean the weld area. Use AC or DC+ polarity. Preheating is not required, although heavier sections should be preheated to 200-300oF. Maintain a medium arc length and use a weaving technique or stringer beads up to twice the diameter of the electrode. Avoid the buildup of heat at any one location on the base metal. Remove slag between passes and allow the base metal to air cool. If severe abrasion is encountered, a final pass of Everwear 800 should be considered.

CHARACTERISTICS
Buildup 300 weld deposits are strong and tough, however with an average hardness of RC 26-31, they do remain machinable.

Clean the weld area. Use AC or DC+ polarity. Preheating is not required, although heavier sections should be preheated to 200-300oF. Maintain a medium arc length and use a weaving technique or stringer beads up to twice the diameter of the electrode. Avoid the buildup of heat at any one location on the base metal. Remove slag between passes and allow the base metal to air cool. If severe abrasion is encountered, a final pass of Everwear 800 should be considered.