Characteristics and Uses of Wear-Resistant Composite Steel Plates
Wear-resistant composite steel plates are versatile, allowing for cutting, bending, and welding. They can be connected to other structures through welding or bolt connections, making them efficient for maintenance and extending the lifespan of equipment. This reduces downtime and lowers capital investment.
1. Gas Cutting Characteristics
Wear-resistant composite steel plates can be gas-cut like ordinary steel plates. To prevent cracks during gas cutting, high gas and oxygen pressure should be used, and the cutting speed should be reduced. In special cases, preheating the plate to 60℃-90℃ is recommended.
2. Cold Forming Characteristics
Despite their high strength and hardness, these steel plates have good cold bending performance and can be cold-formed. To avoid cracking at the edges during cold processing, the flame-cut or sheared edges in the bending area should be ground.
3. Hot Forming Characteristics
The steel plates exhibit good hot processing performance at temperatures up to 350℃. If the temperature exceeds the phase change point (e.g., above Ar), low-temperature tempering between 250℃-350℃ is required after hot processing.
4. Machining Characteristics
These plates have excellent cutting and shearing properties. When machining, adjust the feed amount and speed according to the plate’s hardness and the cutting tool used. Tools made of high-speed steel or cemented carbide are typically required. For cutting and grinding, carbide surface tools are recommended.
5. Welding Method
The steel plates can be welded using ordinary arc welding and gas-shielded welding to achieve strong joints. For welding high-hardness plates, preheating is advised, with the temperature specified in the welding guidelines.
Applications
Wear-resistant composite steel plates are widely used in industries such as mining machinery, coal mining machinery, environmental protection machinery, and engineering machinery. They are also commonly used as high-strength structural steel, with a yield strength of ≥800 MPa.
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