The weld deposit has high compressive strength and is recommended for hardfacing crusher parts and hammer mill parts used in pulverising operations. OA-40 also has these great features:
- High in alloy, abrasion-resisting particles
- Weld deposit takes on a high polish
- Weld deposit will check crack readily to relieve stress
An excellent resistance to abrasive wear is provided when this alloy is used for hardfacing such as: Hammer Mill parts, Crusher parts, Expeller Screws, Augers, Pug Mill Augers, Dredge Cutters and Shovel Bucket Teeth.
Abrasive resistance: Excellent
Impact resistance: Good (low to moderate impact)
Compressive strength: Excellent
Hardness: 61-64 R.C.
OA-40 should be deposited with the open arc only (no gas required), using direct current, reverse polarity. The recommended amperage range is 180-250 amperes at 26-28 volts. A weaving technique is recommended to develop maximum abrasion and impact resistance. Application thickness should be limited to 2 passes or 6mm (¼”). Stick out 35mm. Deposition 4.5Kg/hr at 200 amps.