Wear Resistant Castings
The metal components that are designed to applications that need to withstand wear brought on by abrasion, friction, and other types of mechanical stress are known as wear-resistant castings.
The alloys used to make these castings include metals like Manganese, Molybdenum, Nickel, and Chromium, which improve the material's hardness and wear resistance.
Importance of Wear Resistant Alloys:
Longevity and Cost Effective: The primary benefit of wear-resistant castings is their ability to last longer by withstanding wear and tear and help to reduce maintenance and fewer replacement parts.
Improved Performance: Wear-resistant castings help maintain high levels of performance by minimizing degradation, ensuring smoother operation and reducing the possibilities for failure.
Versatility Across Industries: Wear-resistant castings are used in a wide range of industries, including:
Mining
Heavy Machinery
Construction
Agriculture
Automotive
Material Selection for Wear Resistance Applications:
1. Malabou CS-GET
Malabou Metallurgists developed a special wear alloy material for applications requiring high toughness and wear resistance such as Forestry harvesting feed wheel head teeth, Ground engagement tools (GET), and machineries, grinding and cutting hammers.
The Material is termed as Malabou CS – GET which is readily weldable even in fully hardened and tempered conditions. This specialty of the material makes it valuable in fields where operations like hard-facing and welding can be done with minimal to no preparation.
Mechanical Properties:
Hardness grade can range from 460 Hb on larger section tips to 500 Hb on smaller section tips.
Impact properties shall be 21 Joules at ambient temperature (20°C) and at zero centigrade 14 Joules.
Heat treatment: Supplied in the quenched and tempered condition.
Welding: Minor cosmetic weld repairs are done in the fully heat-treated condition; Preheat the welding area to 200°C minimum, GTAW using E8018 B2 wire, and allow to cool slowly.
2. Hadfield Manganese Steel Wear Parts
Hadfield manganese steel has the ability to harden under the impact of mechanical stress. First developed in 1882 by Robert Hadfield, it is an alloy of steel containing high amounts of both manganese and carbon.
Initially designed for mining applications, it has found various uses in the construction, military, rail, and automotive industries, often used in components exposed to harsh conditions that require a combination of strength and the ability to absorb energy.
Advantages of Hadfield Manganese Steels:
Hadfield Manganese Steel is known for its exceptional toughness and durability.
It is a non-magnetic and work-hardening material that can withstand high impact and abrasion.
This unique property, combined with its high levels of manganese and carbon, makes it a popular choice for manufacturing components that undergo heavy wear and tear, such as crusher jaws, earthmoving equipment parts, and rail crossings.
