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How to choose plate rolling machine? Plate rolling machine is a shaping machine that continuously bends plates. It has the function of rolling plates of different shapes such as O-shaped, U-shaped, multi-section R, etc. Choosing a suitable plate rolling machine (also known as a rolling machine or plate rolling equipment) requires considering multiple factors, mainly including material properties, processing requirements and equipment performance. The following is a detailed purchase guide.
Carbon steel: moderate strength, common models can be processed.
Stainless steel: high strength and hardness, requiring stronger roller force.
Aluminum alloy: good ductility, but easy to deform, requiring low roller force.
Thin plates (1-6mm): suitable for mechanical or asymmetric three-roll plate rolling machines.
Medium and thick plates (6-50mm): hydraulic three-roll or four-roll plate rolling machines are recommended.
Thick plates (above 50mm): high-tonnage hydraulic four-roll plate rolling machines are required.
Width selection: the effective working width of the plate rolling machine should be greater than the plate width.
Plate rolling machines have different types due to different fields of use. According to the number of rollers, they are divided into three-roller plate rolling machines and four-roller plate rolling machines.
Among them, three-roller plate rolling machines are divided into symmetrical three-roller plate rolling machines, horizontal downward adjustment three-roller plate rolling machines, arc downward adjustment plate rolling machines, upper roller universal three-roller plate rolling machines and hydraulic CNC plate rolling machines.
In terms of the development of plate rolling machines, the upper roller universal type is the most backward, the horizontal downward adjustment type is slightly advanced, and the arc downward adjustment type is the most advanced. Three-roller plate rolling machines are mechanical and hydraulic, among which mechanical three-roller plate rolling machines are divided into symmetrical and asymmetrical.
The structure of this machine is three-roller symmetrical. The upper roller makes vertical lifting motion at the central symmetrical position of the two lower rollers, which is obtained by the screw, nut and worm gear transmission, and the two lower rollers make rotational motion. The output gear of the reducer is meshed with the lower roller gear to provide torque for the rolled plate. The disadvantage of this machine is that the end of the plate needs to be pre-bent with the help of other equipment.
The structure of this machine is three-roller asymmetric. The upper roller is the main drive, and the lower roller moves vertically to clamp the plate, and meshes with the upper roller gear through the lower roller gear, and serves as the main drive at the same time. The side roller makes tilting lifting motion, which has the dual functions of pre-bending and rolling. The structure is compact and easy to operate and maintain.
The upper roller of this machine can be lifted and lowered vertically. The hydraulic transmission of vertical lifting is obtained by the hydraulic oil in the hydraulic cylinder acting on the piston rod. The lower roller is driven to rotate, and the output gear of the reducer is meshed to provide torque for the plate rolling.
There is an adjustable roller at the bottom of the lower roller. The upper roller is in the shape of a drum, which improves the straightness of the product and is suitable for ultra-long tanks of various cross-sectional shapes.
The upward-adjustable symmetrical three-roller plate rolling machine can roll metal plates into round, arc-shaped and conical workpieces within a certain range. The two lower rollers of this model are active rollers, and the upper roller is a driven roller.
It is widely used in shipbuilding, boilers, aviation, hydropower, chemical industry, metal structure and machinery manufacturing industries. It is suitable for bending and deforming metal plates, and can roll round, arc-shaped and conical workpieces within a certain range, and has the function of pre-bending the end of the plate. The two lower rollers of this model are active rollers that can move horizontally, and the upper roller is a driven roller that can move up and down. The movement methods are mechanical and hydraulic, and the drive shafts are connected by universal couplings.
The four-roller plate rolling machine is a high-precision rolling equipment. It is widely used in shipbuilding, boilers, pressure vessels, wind power and other industries because of its advantages such as pre-bending function, convenient operation and high forming accuracy.
The upper roller (active roller) is responsible for driving the plate to rotate. The lower roller (driven roller) supports the plate and can be adjusted up and down for pressure. The two side rollers (side rollers) are used for pre-bending and auxiliary forming. The hydraulic system controls the lifting and position of the roller shaft. The CNC system (optional) accurately controls the movement and angle of the roller shaft.
It has a pre-bending function to reduce the trimming process. High-precision forming, suitable for complex workpieces. Convenient operation and high degree of automation. Wide range of applications, suitable for medium and thick plate processing. Stable structure and strong bearing capacity.
Differences: 3-Roll And 4-Roll Bending Machines | Deep Analysis
Features:
Simple structure and low price.
Suitable for light industry and thin plate processing.
Recommended scenarios: small and medium-sized enterprises, small batch production.
Features:
High power, suitable for medium and thick plates.
Stable operation and adjustable pressure.
Recommended scenarios: heavy industry, thick plate processing.
Importance: Determines whether the head and tail joints of the workpiece are tight.
Recommended equipment: Four-roller plate rolling machine > Asymmetric three-roller plate rolling machine > Symmetrical three-roller plate rolling machine.
Influencing factors:
Roller accuracy: surface finish and hardness.
Transmission accuracy: The accuracy of hydraulic transmission is better than that of mechanical transmission.
Diameter selection: The thicker the roller, the higher the bending strength.
Material selection: High-quality alloy steel rollers have good wear resistance and are suitable for high-strength processing.
Brand qualifications: Choose manufacturers with ISO, CE and other certifications.
After-sales service: Including installation and commissioning, operation training, spare parts supply, etc.
Customer evaluation: Refer to user feedback to understand the stability of the equipment and the speed of after-sales response.
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Sufficient budget: hydraulic or CNC plate rolling machine is recommended.
Limited budget: mechanical or ordinary three-roll plate rolling machine can be considered.
Example 1: Processing 10mm thick carbon steel plate, width 2000mm
Recommendation: hydraulic three-roll plate rolling machine, medium pre-bending ability.
Example 2: Processing 2mm stainless steel plate, high precision required
Recommendation: CNC asymmetric three-roll plate rolling machine, high degree of automation.
Example 3: Processing 30mm thick plate, mass production
Recommendation: hydraulic four-roll plate rolling machine, high pre-bending and precision requirements.
Material thickness and width are the primary considerations.
Equipment type determines function and price.
Drive mode affects processing stability.
Performance parameters determine the quality of finished products.
Manufacturer qualifications and after-sales service cannot be ignored.
How to choose plate rolling machine?
Situations where a four-roller plate rolling machine is preferred: if you need a plate rolling machine with high precision, strong pre-bending ability, and convenient operation, especially for the processing of medium and thick plates or complex workpieces.
Situations where a three-roller plate rolling machine is selected: if the processing requirements are not complex and the budget is limited.