Ultra-high pressure hose is an important part of the ultra-high pressure cleaner, it is connected to the nozzle and ultra-high pressure pump important original. China is currently able to produce and ensure the quality of ultra-high pressure hose pressure is generally less than 1500bar, in the pressure above the ultra-high pressure hose has no successful domestic production cases, the production of ultra-high pressure hose bottleneck mainly in the following factors.
(1) lining the material
In the cleaning operation, the demand length of tens of meters above the high pressure hose is very common. As the domestic hose lining material is relatively poor flexibility, comprehensive mechanical properties are not high, so that can not guarantee long-distance lining of the pipe wall uniformity and density of the quality, so the domestic production of ultra-high pressure hose can not Meet the requirements.
(2) wire reinforcement layer problem
Ultra-high pressure hose needs to be evenly woven on the outer surface of the liner more than 4 layers of steel wire, and to ensure that the use of the wire layer is not stacked and firmly bonded with the inner and outer layers, the current domestic problem is not yet good The solution. Compared with the same level of imported hose, domestic steel braided steel wire weft poor, large diameter, uniform weaving uniformity.
(3) the problem of test equipment
To ensure safe operation, ultrahigh pressure hoses require users to provide burst pressure and pulse pressure data, requiring a test pressure of 1.5 times the pressure used. This is the test equipment and other hardware aspects of a higher demand.