W-shaped profile section light steel keel machine

Application and Principle of Cold Roll Forming Machine

Cold roll forming machine (cold bending machine) is a device that processes metal sheets/coils into specific cross-sectional shapes through continuous rolling process. The following are its core application scenarios and working principles:

1、 Core application areas

construction industry

-Light steel keel/purlin: produces C-shaped steel and Z-shaped steel, used for building frames, ceilings, and partitions.

-Roof tiles/wall panels: processed color steel plates, aluminum magnesium manganese plates, used for large-span buildings such as factories and sports halls.

-Composite board: Combined with insulation materials to produce sandwich panels, used in cold storage and purification workshops.

Traffic and Transportation

-Automotive components: Manufacturing door frames, crash beams, and seat frames.

-Rail transit: producing aluminum alloy body profiles for subways and high-speed trains.

-Container: Processing channel steel and angle steel for box structure.

Energy and Environmental Protection

-Photovoltaic bracket: Customized solar panel installation bracket (such as spiral pile, tripod).

-Wind turbine tower: Rolled internal reinforcing ribs and connecting plates of the tower.

-Pipeline system: Production ventilation ducts, cable trays.

Daily Industry

-Shelf/Storage: Manufacturing heavy-duty shelf columns and beams.

-Furniture hardware: Processing metal components such as bed frames and table legs.

-Electrical enclosure: the frame structure for producing distribution cabinets and chassis.

2、 Working principle and core technology

Principle of Cold Processing

-Plastic deformation: Multiple sets of rollers (usually 8-15 passes) are used to apply continuous pressure to the metal sheet, gradually bending it into the target cross-section.

-No thermal impact: No heating is required, and the material strength is increased due to cold work hardening (such as Q235 steel strength can be increased by 15-20%).

Key technical processes

-Unwinding and leveling: The unwinding machine releases the coil material, and the leveling roller eliminates material stress and wave deformation.

-Guidance and pre bending: The plate is positioned by the guidance device, and the first set of rollers completes the initial bending.

-Multi pass rolling: The subsequent rolling rolls are gradually refined and formed to ensure the accuracy of cross-sectional dimensions (error ≤± 0.5mm).

-Fixed length cutting: The flying saw or hydraulic shear automatically cuts according to the preset length, and the end face is flat without burrs.

Intelligent control system

-PLC+touch screen: Input parameters (such as profile specifications and speed), automatically adjust the roller spacing and feed rate.

-Servo drive: high-precision control of rolling speed and position, supporting complex cross-sections (such as profiles with punching and embossing).

3、 Equipment type and characteristics

Type Characteristics Typical Products

Universal standardized rolling mill, suitable for mass production of conventional profiles such as C-shaped steel and U-shaped steel. Building purlins, shelf beams

Specialized customized rolling mill, suitable for special sections (such as car crash beams, photovoltaic brackets). Alien parts, high-precision components

High speed production speed>60m/min, used for large-scale production (such as metal roof tiles). Color steel plate, ventilation duct

The composite molding machine integrates functions such as punching and bending, and can complete complex processing (such as wire slots and curtain wall keels) in one machine. Multi functional profiles and integrated components

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