AYSI sent out a newsletter earlier today with the following information. You can get on distribution for the newsletter from the AYSI website. It is marketing, but still good info.
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Arcoplate Cures Wear
March 2014:
The wearing of metal parts can be defined as the gradual decay or decomposition of the metal itself. When a part becomes so deformed that it cannot perform adequately it must be replaced or rebuilt. While the end results of wear appear similar, the causes of wear are different. It is essential to understand the wear factors involved before choosing a wear protection option.
Wear can be divided into 5 main categories:
abrasive, adhesive, corrosive, high temperature, and high impact.
Abrasion:
Foreign materials rubbing against a metal part cause abrasive wear. Accounting for 55-60 % of all wear on industrial metal components, abrasive wear is considered a group of wear problems that can be further sub-categorized to low-stress scratching abrasion, high-stress grinding abrasion, and gouging abrasion.
Adhesive:
This accounts for as much as 15 % of all wear resulting from the non-lubricated friction of metal parts. Metal surfaces, regardless of their finish, are composed of microscopic high and low areas. As metal surfaces slide against each other, the high areas are broken and tiny fragments of metal are torn away. The continual removal of metal, roughens the working surface, and contributes to more rapid wear.
Corrosive:
Ferrous metals are subject to many forms of corrosion and each one can cause wear damage. The most common type of corrosion is rust. Rust transforms the surface of a metal into oxide that eventually flakes off reducing the original thickness of the metal.
High Temperature:
Heat affects the metal's micro-structure and generally reduces its durability. The wear resistance of most alloys diminishes when exposed to high heat in service due to softening from inadvertent tempering. A major cause of metal failure from high temperature service is thermal fatigue or fire cracking. This results from repetitive intense heating followed by quick cooling. The repeated expansion and contraction caused by this thermal cycling eventually exceeds the ability of the metal to recover and causes deep cracking.
High Impact:
When the stress on a metal component exceeds the elastic limits of the metal it deforms beneath the point of impact and laterally across the surface away from the impact point. Very brittle metal cannot withstand deformation so it may crack from either a severe blow or repeated lighter blows.
Even if the metal is ductile enough to avoid cracking, repeated impact often compresses the surface, sometimes causing the metal to 'mushroom' at the edges and eventually chip off.
No matter which problem is wearing you out, Arcoplate has a solution. Call or e-mail a local representative to access your needs.
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