What materials are suitable for a scraper conveyor?

What is a scraper conveyor and how does it work?

A scraper conveyor, also known as a drag conveyor, is a key device in industrial material handling processes. It consists of a closed or partially closed channel where flights attached to a chain move, transporting material from one place to another. This mechanism is particularly useful when handling hot ash, as the scraper conveyor can move large amounts of material efficiently and continuously.
The operation of a scraper conveyor is based on a motor-driven chain or belt to which the flights are attached. As the chain moves, it drags the material through the channel, transferring it to the desired location. This system allows material to be moved both horizontally and vertically, making the scraper conveyor a versatile and efficient solution for various industrial needs.
Since scraper conveyors operate in a closed channel, they significantly reduce the spread of dust and spillage. This enhances the cleanliness and safety of the work environment, which is especially important when handling hot ash or other hazardous materials.

What are the most common materials for a scraper conveyor?

The materials of a scraper conveyor play a crucial role in its performance and durability. The most commonly used materials in the manufacturing of scraper conveyors are carbon steel, heat-resistant steel, and stainless steel. These materials are specifically chosen for their ability to withstand the hot and abrasive conditions associated with handling hot ash.
Carbon steel is an economical choice that offers good basic durability and is suitable for most applications. Heat-resistant steel, on the other hand, provides enhanced heat resistance, which is particularly important when the scraper conveyor handles extremely hot materials. Stainless steel offers excellent corrosion resistance, making it an ideal choice for humid or chemically aggressive environments.
Material selections for a scraper conveyor are always made based on operating conditions and the properties of the material being conveyed to ensure optimal performance and long-lasting use.

How do different materials affect the durability of a scraper conveyor?

Different materials affect the durability of a scraper conveyor in many ways. Carbon steel is a common choice due to its basic durability and affordability, but it may not withstand high temperatures or corrosion as well as other materials.
Heat-resistant steel provides better protection against high temperatures, making it a suitable choice for applications where the temperature can rise significantly. This material also reduces problems caused by thermal expansion, which can affect the operation of the conveyor.
Stainless steel, in turn, offers excellent corrosion resistance, extending the lifespan of the scraper conveyor, especially in humid or chemically challenging environments. This material is also easy to clean, improving the device's hygiene and reducing maintenance needs.

What factors affect material selection?

Several factors affect the material selection for a scraper conveyor, such as temperature resistance, costs, and wear resistance. Temperature resistance is especially important when handling hot ash, as the material must withstand extreme temperatures without deformation.
Costs are always a significant factor in material choices, but it is important to find a balance between cost and performance. Cheaper materials may be attractive for initial investment but can lead to higher maintenance costs and a shorter lifespan.
Wear resistance is also important because the scraper conveyor is constantly exposed to mechanical stress. This means that the material must withstand long-term use without significant wear or damage, reducing maintenance needs and improving the reliability of the device.

How does Kopar select materials for its scraper conveyors?

Kopar approaches material selection for its scraper conveyors carefully to ensure both quality and efficiency. We use our extensive expertise and experience to choose the right materials for each application, taking into account the specific needs and operating conditions of our customers.
For instance, when handling extremely hot materials, we often choose chains made from boron steel, which offer excellent durability and low wear. This unique chain is developed in Finland and is significantly more durable than traditionally used manganese steel chains.
Our material selections are also based on continuous innovation and development, allowing us to offer our customers the best possible solution to every challenge. Our goal is that our scraper conveyors not only withstand demanding conditions but also improve the efficiency and reliability of our customers' processes.