2013年9月11日星期三

Correct choice of hydraulic hose

The correct choice of hydraulic hose, to the entire hydraulic system can work , and corporate procurement costs. Therefore, the choice should make reference to the hydraulic hose assembly equipment maintenance manuals, and focus on the following aspects: Depending on the device working conditions ( temperature ) and the hydraulic medium situation , choose the right hose . Hose Working environment temperature is too high or too low will affect the life of the hose and pressure capability , which allows it to be used within the scope of the hose , long-term working temperature is not within the scope of its allowed system should be used hose jacket or purchasing special hose . If special media , make sure the hose inner and outer , fittings, and seals compatible with the media  according to the system pressure , determine the maximum  Hydraulic tube fittings working pressure hose . Each hose has a maximum working pressure of the hose burst pressure of 3-4 times the maximum working pressure . Hose pressure is higher, the higher the price , so the actual pressure based system , select the maximum working pressure of the hose , which can ensure the normal operation , but also save procurement costs. If the system impact pressure frequently , you should use a higher pulse life hose , and should choose an appropriate  Hydraulic hose fittings increase in the maximum working pressure of the hose . according to the flow selector hose diameter, tube diameter is too small will increase the flow rate of the medium , the system heat, reduce efficiency , and will produce excessive pressure drop , affecting the overall system performance , the diameter over the General Assembly to increase procurement costs and affect the normal operation of the system , so the hose diameter to be appropriate. When the hose pipe or hose clamp through the plate , they should also pay attention to the outside diameter of the hose .the choice should be aware of when high pressure hose high pressure hose bend radius , bend radius should be calculated by subtracting the length of the front connector crimping . If the device hose bend radius is too small, will reduce the ability of the pressure hose and reduce  the arrangement should be based on rational use of hydraulic fitting manner , the joint angle and hose assembly mounting angle.

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