Product Description
To choose the right hardfacing alloy the primary consideration is the type and relative importance of involved wear factors. It is the service conditions that play vital role in choosing the protective alloy system.
Compatibility of this alloy with base metal is usually not an issue. For easily weldable low carbon steels, stainless steels, nickel alloys the hardfacing deposit can be directly applied. However, if the component is made of difficult-to-weld grades like high carbon, tool steels, cast iron, hardenable grades etc, then a compatible buffering is applied with the electrode that is used to join that particular base metal. This buffering takes care of bonding with the hardfacing alloy.
For all general hardfacing / surfacing requirements only six alloy systems pioneered by ESAB are sufficient. With these six alloys one can protect all machinery and equipment in any service condition. However for high volume requirements in specific areas, ESAB also has a range of customized products that make for a highly cost-effective solution.
Prime Six
OK 83.40
Machinable (30-35 HRC) build-up on any weldable grade of base metal. It offers radiographic soundness, impact and cyclic fatigue resistance, extreme build-up capacity. [Use OK 68.82 buffer for difficult to weld steels]
Asträ MN
State-of-the-art, build-up electrode, resulting in austenitic deposit with high impact and moderate abrasion resistance. It work-hardens fast to 52 HRC and can be applied on carbon steel and 14% manganese steels.
Terroweld EWR
Non-machinable, uniform deposit of chromium carbide and secondary carbides to resist mineral abrasion. Excellent arc characteristics.
Cobalarc MX
An alloy with superior, high temperature (up to 850 C) abrasion resistance than any other alloy. The microstructure is designed to comprise complex microcarbides in a superalloyed matrix.
Cobalarc 4
Tungsten carbide (pre-formed) deposit for maximum room temperature wear protection.
OK Selectrode 93.66
Resistance to compound wear of corrosion, erosion, friction, cavitation, spalling, softening (heat) up to 1100 C.
Other hardfacing electrodes for following requirements are available:
● Hardfacing hot forging dies
● Hardfacing I.D. fan and exhaust fan impellers
● Hardfacing crane wheels
● Hardfacing cement plant roller press and tables
● Hardfacing crusher teeth, mantle, hammers
● Hardfacing valve seats
● Hardfacing rail points and crossings
● Surfacing acid tanks and stirrers
● Surfacing galvanizing tanks
● Hardfacing sugar rolls for increased cane gripping
● Hardfacing BLT chutes
● Hardfacing blast furnace bells
● Hardfacing coal handing nozzles, liners, pipes
● Hardfacing sinter handling components
● Hardfacing against quartz abrasion
● Hardfacing rock drill bit
