Methods in Achieving Wear and Corrosion Resistance for Steel Castings

Due to excessive heat and friction involved in mining, corrosion and wear is one of the most prevalent problems in the industry. Millions of dollars are lost due to halted production, worker injuries and unscheduled repairs as a result of wear and corrosion on equipment. Although replacement and repairs are an inevitable part of maintaining mining equipment, there are ways to minimize losses due to continuous usage under harsh conditions. There are a number of methods that can slow down the effects of wear and corrosion, particularly for crucial parts such as heat-resistant steel castings.


Methods in Achieving Wear and Corrosion Resistance for Steel Castings

Choice of Material

The best way to ensure that parts will hold up against the pressure is to manufacture them with the proper materials. Aside from strength, dent resistance, toughness and ductility, heat resistance should be a top characteristic. Crafting parts using such materials will help improve the ability to resist breaking or wearing down under extreme temperatures. A few examples of excellent heat-resistant materials are alloys such as alloy steel, grey iron and Ni-hard. These materials are most often used by reputable manufacturers like Wabi Iron & Steel Corp. Altering metals through alloying helps strengthen and increase protection against corrosion. For example, although steel has virtually all the properties to make it suitable for mining, it can corrode easily due to moisture, oxidation and elevated temperatures. Alloying allows for steel to become more heat resistant. As they are widely available, such alloy steels are quite cost-effective for use in the manufacture of mining components. Applying corrosion-resistant coatings can also help protect steel castings and other essential parts from friction and extreme temperatures. Coatings help reinforce surfaces of parts and serve as a first line of defense against damage. For wear and corrosion resistant parts and equipment that will provide superior operating performance in underground conditions, mines depend on quality products obtained from the steel foundry division of their selected manufacturer.

Protective Coatings

As well as manufacturing wear parts using heat-resistant materials, an additional layer of protection can help to improve operation within the harsh, corrosive environment of a mine. Applying corrosion-resistant coatings can also help protect steel castings and other essential parts from friction and extreme temperatures. Coatings help reinforce surfaces of parts and serve as a first line of defense against damage. This way, mines get the most out of their equipment parts before having to eventually replace them with new ones obtained from the steel foundry division of their selected manufacturer.

Sources:
Introduction to Surface Engineering for Corrosion and Wear Resistance, ASM International
Wearing down the industry, Australian Mining

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