Steel wire wrapped hose with a pressure resistance of 100MPa
As a core component in the field of industrial fluid transmission, ultra-high pressure steel wire wrapped high-pressure hoses demonstrate excellent reliability under high pressure, high temperature, and complex working conditions due to their unique structural design and material properties. This type of hose is usually composed of three parts: an inner adhesive layer, a reinforcement layer, and an outer adhesive layer. The reinforcement layer adopts multi-layer steel wire winding technology, which achieves a breakthrough in pressure bearing capacity through precise mechanical design.
Structural Design and Material Innovation
The steel wire winding structure is the core technical feature of ultra-high pressure hoses. Compared with traditional steel wire weaving structures, the winding process forms a tighter mechanical network through spiral intersecting steel wire layers, significantly improving the pulse pressure resistance performance of the hose. For example, in offshore oil drilling platforms, the hose used for connecting the blowout preventer group needs to withstand a working pressure of 34.5 MPa or more. Its reinforcement layer adopts a four layer steel wire winding process, and the blasting pressure can reach more than 4 times the working pressure. Polyurethane (PU) or ethylene propylene diene monomer (EPDM) are commonly used as materials for the inner rubber layer. The former has excellent wear resistance and oil resistance, while the latter can resist the erosion of special media such as phosphate hydraulic oil. The outer layer is made of polyurethane (PU), which has the characteristics of UV resistance and ozone aging resistance, ensuring long-term use in extreme environments.
Performance advantages and application scenarios
The core advantage of ultra-high pressure steel wire wrapped hoses lies in their "combination of rigidity and flexibility" characteristics. The steel wire winding layer endows the hose with a high-strength skeleton, ensuring its structural stability when subjected to high pressure; The flexibility of polyurethane or rubber matrix allows flexible arrangement of hoses in complex spaces, with a minimum bending radius of up to three times the inner diameter. This characteristic is particularly important in fields such as engineering machinery and aerospace. For example, in automotive hydraulic systems, wire wound hoses need to meet a wide temperature range of -40 ℃ to+120 ℃, and pass the pulse life test specified in SAE 100R13 standard to ensure that no leakage occurs under high-frequency vibration.
Manufacturing process and quality control
The manufacturing of ultra-high pressure hoses must strictly follow standardized procedures. Taking the joint crimping process as an example, the internal stripping technology combines the L2 part of the joint core with the inner layer of the rubber hose to form a sealing working length, while squeezing the L1 part of the joint core with the serrated groove of the rubber hose joint jacket, causing the steel wire layer to deform and fill the groove in a serrated and S-shaped manner, significantly improving the connection strength. In contrast, traditional processes only achieve sealing by combining the joint core with the inner layer of rubber, and the internal bonding strength is much lower than that of the internal peeling rubber structure. In terms of quality control, mainstream enterprises implement batch acceptance rules, randomly sampling 3% of samples for every 500 pieces. If the blasting pressure test fails, the entire batch will be judged as scrapped. The storage conditions are equally critical, and the hose should avoid contact with acidic and alkaline substances. The storage period should not exceed 36 months from the date of production.
Future Development Trends
With the advancement of industrial automation and deep-sea development, ultra-high pressure steel wire wound hoses are developing towards higher pressure levels, lighter weight, and more intelligent direction. For example, some companies have developed ultra-high pressure hoses using carbon fiber reinforced layers, which can reduce weight by 30% compared to traditional steel wire hoses while maintaining the same pressure bearing capacity. In addition, intelligent hoses with integrated sensor technology can monitor pressure, temperature, and leakage status in real time, providing dual protection for industrial safety. In the future, technological breakthroughs in this field will further promote the upgrading of high-end equipment manufacturing industry.