The Highway Guardrail Forming Machine is a specialized equipment used for producing highway guardrail panels, which processes steel plates into waveform guardrail panels that meet standards through cold bending forming technology. The following is a detailed description of its components, technical parameters, production speed and output, and product materials:
Components
The high-speed guardrail panel forming machine usually consists of the following core modules:
uncoiler
Used for unfolding steel coil raw materials, equipped with hydraulic tensioning device to keep the plate flat.
leveller
Eliminating wave or warping of steel plates through multi roll leveling (such as 7-roll or 9-roll) to ensure forming accuracy.
Punching machine
Using hydraulic punching technology, the connection holes and reinforcement holes of the guardrail plate are punched, and the mold material is Cr12 steel with a hardness of HRC60-62.
Forming host
Composed of multiple sets of rollers (such as 15-20 rows), the steel plate is gradually bent to form a corrugated guardrail plate. The roller material is GCr15 steel, with a surface coated with hard chromium and a hardness of HRC58-62.
Cut-off device
Hydraulic shearing machine, used to cut the formed guardrail plate according to the set length, and the shearing mold is also made of Cr12 steel.
Hydraulic station and electrical control system
The hydraulic system provides power support, and the electronic control adopts PLC frequency conversion control, supports touch screen operation, and can adjust speed and fixed length parameters.
Finished product rack and receiving device
Supporting and transporting finished products, some equipment is equipped with automatic material receiving and stacking systems to improve efficiency.
Technical parameters
Typical values of parameter types
Host power: 15-55kW (with significant differences among different models, such as 18.5kW and 45kW)
Forming speed: 5-15m/min (commonly 8m/min, high-speed models can reach 14m/min)
Sheet thickness: 2.0-4.0mm (mainly made of Q235 steel, some equipment supports galvanized sheet)
Unfolding width of the board: 480-500mm (suitable for two wave or three wave guardrail board design)
Molding length: customized (usually 4.32 meters, adjustable for customization)
Equipment dimensions: 16-20m in length, 1.2-2.5m in width, 1.5-2m in height (depending on the model)
Transmission mode: gearbox transmission or chain transmission (such as 2-inch single row chain)
Production speed and output
Production speed:
Usually 8-10m/min, high-speed models can reach 14m/min, depending on the thickness of the board and equipment type.
Production:
Taking a 4.32-meter-long guardrail panel as an example, about 40-60 segments (approximately 170-240 meters) can be produced per hour, which is equivalent to a weight of about 2-3 tons/hour (calculated based on Q235 steel density).
Product Material
Basic material: Q235 carbon structural steel, thickness 2.0-4.0mm.
Traditional process: forming first and then hot-dip galvanizing (coating thickness of 600g/m ² or more).
New technology: galvanizing first and then forming (using zinc aluminum magnesium alloy coating, coating thickness of 120g/m ², stronger corrosion resistance).
Roll: GCr15 bearing steel, with a hardness of HRC58-62 after quenching treatment, and a surface coated with hard chromium.
Punching die: Cr12 die steel, hardness HRC60-62.
Application scenarios and advantages
Applicable scenarios: Production of guardrail panels for highways, bridges, and urban roads, meeting the requirements of Class A or Class S collision prevention level.
The technical advantages of the high-speed guardrail forming machine are:
High degree of automation: The entire process from uncoiling to receiving is automated, reducing manual intervention.
Precision control: The PLC system ensures precise punching positioning and forming dimensions, with a pass rate of ≥ 98.6%.
Energy saving and environmental protection: adopting variable frequency speed regulation and high-efficiency hydraulic system to reduce energy consumption.
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