Bending Guidelines for Wear-Resistant Composite Steel Plates

Wear-resistant composite steel plates require specific handling due to their unique material properties. Through alloy control and heat treatment, these plates achieve an optimal microstructure of lath martensite with residual austenite between the laths, typically through quenching and low-temperature tempering. Known for their high strength, these plates are ideal for creating lightweight, energy-efficient products with a strong, durable appearance. They are also easy to weld, cut, and form. However, proper safety protocols must be followed during workshop processing.

Cold Forming and Temperature Guidelines

Maximum Thickness: The maximum thickness for cold forming 300, 400, and 450 series steel is 20mm.
Forming Temperatures: The minimum forming temperature should not fall below +20°C, and the maximum should not exceed +200°C.
Preheating Requirement: For plates over 20mm thick, or for 500 series steel, preheating is recommended before cold forming. The suggested preheating range is 150-200°C. Preheating improves deformation characteristics and helps ensure successful bending.

Bending Considerations

Due to the high hardness of wear-resistant composite steel plates, more bending force, rebound force, and a larger bending radius are required compared to traditional structural steels. To ensure quality, the following guidelines are recommended:

Use of Proper Tools: Proper tools and techniques are essential for forming. Tools that are worn, poorly lubricated, or flawed will negatively impact forming quality.
Lubrication: Lubricating the bending surface reduces friction and helps achieve better results.
Bending Radius: Use the maximum allowable bending radius and aim to bend the plate in a single pass to avoid rebound.
Preheating Plates: Plates stored in cool environments should be preheated to at least +20°C before beginning any bending operations.

For hardened or thinner wear-resistant composite steel plates, extra care should be taken during forming to avoid material failure.