Wear-resistant steel plates, also named abrasion-resistant plates (AR Plates), are used to reduce wear and tear on equipment surface caused by intense rolling abrasion and impact. The strength of these wear-resistant steel plates is enhanced by heat treatment such as quenching and tempering, or by adding some alloying elements, the original characteristics of the steel plates are intensified.
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Thanks to their excellent hardness and toughness properties, these wear-resistant steel plates can be found in various industries and applications where abrasion, wear, tear and impact requirements are particularly critical.
Excavators, Crushers and Bulldozers
Mining and earth-moving machinery
Liners and structural elements for buckets
Dump Truck bodies
Crushing and pulverizing equipment
Conveyor belts
Fan blades
Scrap presses
Paving moulds
Unlike many other steel products, these wear steel plates doesn’t have a standard provision, nor required specific chemical composition. The fact is that each mill has its own alloy composition of wear plates, resulting in different mechanical performance. But being agreed to all, the hardness which is measured in Brinell units is the most crucial factor in judging the quality of a wear plate.
Wear-resistant steel plates are well defined regarding their hardness. There are mainly 2 ways to increase the hardness and toughness of the wear plates:
i. Heat Treatment (QT)
For some specific working environments, such as earthmoving and mining, quenched and tempered steels by the process of heat treatment are an economical choice. However, these types of wear plates, while cost effective, are not as durable as alloy wear plates.
ii. Adding Alloy Content
For alloy wear plates, there are 3 basic alloying elements: carbon, silicon, manganese, and of course, other alloying elements can also improve different mechanical performances of wear-resistant steel plates:
Carbon: The increase of carbon content in steel will increase its yield point and tensile strength but reduce its ductility and impact. Meanwhile, too much carbon content could reduce the weldability of the steel, so adjusting the carbon content balance in the wear plate is a very important operation that can’t be ignored.
Silicon: Silicon can significantly increase the elastic limit, yield point and tensile strength of steel, but like carbon, the weldability of steel would decrease by adding too much amount of silicon.
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Manganese: Manganese is a good deoxidizer, and desulphurization in the steelmaking process, so that the wear plate has greater strength and hardness, also improves the hardenability of steel and the hot processing performance.
When considering the lifespan of the wear-resistant steel plates, especially in applications like the truck bodies, conveyor belts, and fan blades, the smoothness of the surface is a very critical factor. A smooth surface can ensure uniform wear as well as bending radius, which can provide a precise bending accuracy.
The core hardness value affects the lifetime of the wear parts, for example, as wear occurs and new material is exposed, if the core hardness value of the steel plate is higher, the wear rate will be minimized compared to the steel plate with a low core hardness value, and the service life of the parts will also be prolonged.
Wear plates are abrasion resistant plates or liners that are used to reduce wear and tear in surfaces that are exposed to intense rolling abrasion and impact.
These plates are made fit-for-purpose for a number of machines and products across the earthmoving, mining and other industrial industries. They are replaceable items that are easy to install and significantly cheaper than replacing the part or machine they are designed to protect.
Produced out of a duplex material that generally consist of a tough, wear resistant alloy coating and a shock absorbing steel or chromium steel backing plate, these combined properties enable the product to perform under extreme conditions.
Wear plates play a critical role in the protection and longevity of earthmoving, mining and other industrial equipment.
The outcome of using fit-for-purpose wear plates is threefold:
And not only are costs reduced, but output is increased.
Examples of machines/applications that require wear plates include:
Wear plates date back as far as the 18th century and the industrial revolution.
From the s onward, society shifted from hand-produced wear plates to machine-production with an increased focus on efficiency.
Rather than replacing expensive machines, businesses instead identified areas of weakness within the machines and installed wear plates as a form of armor. These replaceable parts are known today as wear plates.
Back in the 18th century industrial machines were predominantly used for textiles, with the first planning, milling and shaping machines created in the early-19th century.
Wear plates for these machines were basic and usually one-size-fits-all. Today, machinery is used across countless industries including construction, quarrying, and mining. So significantly more variety is required.
Not all wear plates are made equal. Heavy, bulky wear plates on fixed plant machinery may seem more durable, but in reality produce strain on the entire system, leading to more frequent maintenance schedules and increasing the likelihood of a breakdown and production downtime.
In fact, both mobile plant and fixed plant such as screen decks and apron feeders can benefit from lighter, thinner wear parts, due to the efficiencies of ergonomics and aerodynamics.
Regardless of the type of machine, the industry or operating conditions, the wear plate you choose will have a huge impact on the longevity of equipment.
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