The application of high-pressure hose and the important factors affecting the life span

I. High-pressure hose application considerations:
 1, temperature, high pressure hose in the use of high ambient temperatures when the service life is short, for this reason to be as far as possible from the heat source, if necessary, can be used to armored hose or installation of heat shielding plate, in order to avoid high temperatures in the case of heat deterioration of the hose.
 2, to avoid surface friction: Do not use in the installation of other piping contact to avoid friction rupture, in the shall cross or work may occur in the case of friction should be used to protect the device (hose clamps / springs)
 3, bending, the use of the need to bend to avoid urgent product bending radius R ≥ (9 ~ 10) D (D is the outer diameter of the hose) joints to the beginning of the bending of the straight line section is greater than 6 times the outer diameter of the pipe
 4, the installation of high-pressure hose, the use of the installation situation can not be in a state of tension, there should be a certain length margin. There is no relative motion at both ends, but also to keep the hose slack. When the hose is pressurized, it will produce changes in length and diameter, so the tensioned hose will expand under pressure, resulting in reduced strength.
 5, the installation process, in the installation process to avoid twisting of the hose, the hose is subjected to a slight twist, it may make its strength reduced or loose joints.
 6, the bending of the hose and the hose connector should be installed on the same plane to prevent twisting. In special circumstances, if the hose ends of the joints need to be in two different planes, should be installed in the appropriate location of the card will be divided into two parts of the hose, so that each part in the same plane.
 7. If the hose is configured on a critical component, it is recommended that it be inspected or replaced periodically.
 II. Important factors for the service life of high pressure hose.
 From the quality of the product has not reached the positive vulcanization, the manifestation of under-sulfur or over-sulfur. By the production of vulcanization is not handled properly will lead to product performance is not up to standard, the hose wall thickness is not uniform, the inner rubber layer has a big impact.
 Steel wire braided or steel wire wound high-pressure hose is not in accordance with the production process, the braiding angle does not reach 54 degrees 44 minutes, the steel wire is too tight or too loose, will lead to deformation of the product in the process of use. Poor airtightness of the inner rubber layer is easy to media into the steel wire layer, so that the steel wire layer and the adhesion of the rubber layer is insufficient. Poor airtightness of the outer rubber layer will make the steel wire rust.