As a high quality mine support product, it has remarkable technical superiority and characteristics. The following is a detailed analysis of the advantages and disadvantages of W steel strip for mining:
Advantages:
1. High modulus of bending section: the bending section modulus of W steel strip is increased by 37 times, and even 54 times or 55 times in some cases, which greatly enhances its bending performance, making W steel strip more stable and reliable in support work.
2. Stiffness and strength improvement: the steel degree of the W steel strip is increased by about 70 times, and the strength and rigidity are also greatly improved, so that it can withstand greater pressure and deformation, and maintain the stability of the supporting structure.
3. Tensile strength enhancement: The hardening effect of W steel strip during cold rolling can increase the tensile strength by 12% to 15%, and even reach 30% to 50% enhancement in some cases, which further enhances its supporting capability.
4. Easy to stick closely with surrounding rock: The design of W steel strip makes it easier to stick closely with surrounding rock, which helps to provide uniform supporting force and reduce deformation and damage of surrounding rock.
5. High section utilization rate: The section utilization rate of W steel strip is high, which can effectively save materials, and its price is relatively low, reducing the support cost.
6. Widely used: W steel belt is not only used in mine support, but also widely used in other industries that need support, showing good versatility and adaptability.
Cons:
1. Thin and easy to damage: W steel strip is thin, and in the case of large roadway pressure, it is easy to have the phenomenon of the support plate pressing into or through the steel strip, resulting in shear and tear damage of the steel strip. Therefore, the specific supporting conditions and pressure conditions need to be taken into account when using W steel belts.
2. Easy cracking at the weld: Although the article does not directly mention the problem at the weld of W steel strip, the general welding process of steel strip may have poor overall mechanical properties and easy cracking at the weld. Therefore, when using W steel strip, it is necessary to pay attention to its welding quality and maintenance.
In summary, the W-steel strip for mining has remarkable technical advantages and characteristics, and has a wide application prospect in mine support and other industries requiring support. However, in the process of use, it is also necessary to pay attention to the shortcomings of its thin and easy to be damaged and the welding is easy to crack to ensure the stability and safety of the supporting structure.
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