High pressure steel wire braided rubber hose has the functions of reducing pipeline installation stress, compensating for pipeline position movement, absorbing pipeline system vibration and pipeline system noise (decibels (dB)), etc., and is widely used in fields such as locomotives and ships. High pressure rubber hoses have low fluid resistance, small volume expansion, good chemical resistance, light weight, small outer diameter, and a single length of up to 1200m. The following mainly introduces several aspects that should be considered when designing and selecting high-pressure rubber hoses.

1. Raw material quality

The wire mesh is generally made of austenitic stainless steel (stainless steel acid resistant steel) (304, 316L), and elements such as Cr, Mo, Ni can make it have good pitting corrosion resistance. As the C content in the steel decreases, the pitting corrosion resistance increases.

2. Size

The size determines the service life to a certain extent. For example, if the hydraulic hose is too short, it may not achieve the purpose of compensation, vibration reduction, and noise elimination (dB); However, excessively long high-pressure steel wire braided rubber hoses can lead to instability, increased flow resistance, as well as additional mechanical damage and vibration issues. Therefore, in the process of use, the length should be selected according to the curvature radius required by the standard.

3. Flange form

Fixed at both ends, also known as flange flange or flange. In some applications, it is easy to cause hose distortion, reducing its service life. You can choose to use a welded flange on one end and a loose flange on the other end, which can achieve a torque free state after the installation of the high-pressure hose and increase its service life.

High pressure steel wire braided rubber hose is suitable for conveying petroleum based and water-based liquids with corresponding pressure in automated hydraulic systems, and can withstand high working pressures up to 70-120Mpa. The structure is mainly composed of an inner rubber layer, a middle rubber layer, four or more layers of alternately wound steel wire reinforcement layers, and an outer rubber layer. The inner rubber layer has the function of bearing pressure on the conveying medium and protecting the steel wire from erosion, while the outer rubber layer can protect the steel wire from damage. The steel wire (ф 0.3-2.0 reinforcement layer) layer is the skeleton material, which plays a reinforcing role.