The binding method of steel strapping seals has a direct impact on the tension, and different binding methods will affect the distribution, transmission efficiency, and final sealing effect of the tension. The following will be introduced from multiple perspectives:
1. Binding direction method (one-way vs. cross)
Unidirectional bundling: Steel strips or wires are wrapped in one direction, with tension concentrated in one direction, which can easily cause stress concentration and result in relatively low bundling firmness.
Cross tying (cross/spiral): Wrapping in a staggered manner can evenly distribute tension, improve overall force balance, and enhance the stability and firmness of the seal.
2. Number of winding turns
Less laps: Each lap carries a greater tensile load, which can easily cause local looseness or tightness, affecting the sealing effect.
Multiple cycles: can better distribute tension and improve the stability of the entire structure, but increase material usage and operational complexity.
3. Pre tightening method
Uniform pre tightening: Maintain the same tension in each circle during the bundling process, which helps to evenly distribute the tension and prevent incomplete sealing in some areas.
Uneven pre tightening: Pulling some rings tightly and some rings loosely can cause local overload or seal loosening, reducing overall sealing performance.
4. Overlapping method (overlapping vs. parallel winding)
Overlapping wrapping: Each loop partially overlaps, which helps to enhance the tension transmission path and improve the anti loosening ability.
Parallel winding: Circles do not overlap with each other, resulting in a shorter path for tension transmission and a higher risk of loosening.
5. Tightening and locking method
Using buckles, locking rings, or welding for fixation: can maintain a constant tension after bundling is completed, preventing a decrease in tension during use.
No locking or relying solely on friction: may cause a decrease in tension due to vibration or thermal expansion and contraction, thereby affecting the sealing firmness.
6. Tension application method (manual vs. mechanical)
Manual bundling: It is prone to unstable tension, large control errors, and affects sealing consistency.
Mechanical tensioner or hydraulic equipment: can accurately set and control the tension, making the bundling more standardized, firm and reliable.