High Pressure Milled Precision Surface CK45 S45C 1045 Carbon Steel Hot Forged Square Plate

High Pressure Milled Precision Surface CK45 S45C 1045 Carbon Steel Hot Forged Square Plate

The CK45 S45C 1045 carbon steel hot forged square plate is a medium-carbon steel component manufactured through a controlled hot forging process to enhance internal grain structure and density. Each plate undergoes high-pressure milling to achieve a precision surface finish, ensuring dimensional stability and minimal material allowance for subsequent machining. With a carbon content of approximately 0.45%, this material grade balances tensile strength, ductility, and wear resistance. These plates are specifically engineered for heavy-duty industrial applications where structural integrity under high-stress loads is a primary requirement. The forging process eliminates internal porosity and cooling voids, resulting in a uniform metallurgical structure across the entire cross-section of the square plate.

Core Technical Specifications

Technical Characteristics

• Internal Structural Integrity: The hot forging reduction ratio ensures a refined grain flow, which increases the plate’s resistance to impact and fatigue compared to standard rolled plates.
• Precision Surface Finish: Milled surfaces reduce setup time for CNC machining and grinding operations, providing a clean reference plane for tooling.
• Consistent Machinability: The 1045/S45C chemistry provides reliable performance during drilling, tapping, and milling operations.
• Heat Treatment Response: Suitable for induction hardening or flame hardening to increase surface hardness for high-wear applications.
• Geometric Accuracy: High-pressure milling ensures parallelism and perpendicularity, minimizing internal stresses during assembly.

Application Scenarios

Mechanical Engineering and Mold Bases

Extensively used in the production of die sets, mold bases, and bolster plates. The structural density of the forged CK45 steel prevents deformation under the high clamping pressures found in injection molding and stamping presses.

Industrial Machinery Components

Applied in the manufacturing of heavy-duty gear racks, machine tool beds, and structural support blocks. Its load-bearing capacity makes it suitable for components subjected to repetitive mechanical stress.

Hydraulic and Power Transmission

Utilized for hydraulic cylinder end caps, mounting flanges, and forged manifolds where leak-proof performance under high pressure is mandatory. The absence of internal voids ensures safe operation in fluid power systems.

Maintenance and Handling Guidelines

Storage and Corrosion Prevention

• Apply a layer of anti-rust oil or industrial grease to the milled surfaces immediately after inspection to prevent atmospheric oxidation.
• Store in a temperature-controlled, low-humidity warehouse to avoid condensation-induced surface pitting.
• Keep plates off the ground using wooden dunnage or pallets to ensure air circulation and prevent moisture contact.

Handling and Machining Tips

• Use nylon slings or padded lifting equipment during transport to avoid scratching or denting the precision-milled surfaces.
• Account for the material's carbon content when welding; pre-heating and post-weld stress relief are recommended to prevent cracking in the heat-affected zone.
• Verify surface flatness before final assembly if the plate has undergone significant localized heat treatment.