In addition to the common straight waveform guardrails, end head guardrail panels are also used in highway construction for the starting sections and special nodes of the guardrail. These panels have higher requirements for the forming machine.
1. Radius control
The end head guardrail needs to gradually curve into an arc shape, and the bending radius is usually controlled at R = 350–500mm. The forming machine uses multiple passes of progressive bending to avoid stress concentration caused by a single press bend.
2. Material rebound treatment
Thick plates have a risk of rebound after bending. Through local heating + rebound compensation procedures, the end head curve can be ensured to comply with the installation specifications.
3. Corrosion treatment
The end head is the most vulnerable position to impact in traffic accidents, and higher surface protection requirements are needed. The equipment supports reserved interfaces for spraying or galvanizing processes, facilitating unified treatment in the future. Conclusion
The small end guard plate conceals the technical difficulties. The meticulous control of the equipment over details is the foundation for ensuring road safety.