连达品牌软管总成-扣压技术说明（中英文版）

1、 胶管尺寸

胶管内径要适当。管径过小会加大管路内介质的流速，是系统发热，降低效率，而且会产生过大的压力降，影响整 个系统的性能。若胶管采用管夹固定或胶管过钢板等间隔物时，也要注意胶管的外经尺寸。

2、 工作压力

资料中有关胶管的动态工作压力是指胶管的连续工作允许的最高压力。按照有关国际标准规定的液压胶管的安全系数，我们推荐的工作压力通常为胶管最低爆破压力值的四分之一。

3、 冲击压力和疲劳寿命

胶管的选择是根据液压系统设计的最高压力值来确定的。由于液压系统的压力值通常是动态的，有时会出现冲击压 力，冲击压力峰值会大大高于系统的最高压值。但系统上一般都有溢流阀，故冲击压力不会严重影响胶管的疲劳命，对于冲击压力特别频繁的液压系统，建议选用耐脉动冲击的胶管产品。

4、 温度范围

用户应该在胶管质量规范允许的温度内使用胶管，如果工作环境温度超过这一范围，将会影响到胶管的寿命，其承压能力也会大大降低。工作环境温度长期过高或过低的系统，建议采用软管护套。

5、 化学相容性

若使用特殊的液压介质，用户应确保所选用的胶管总成其胶管内，外层，接头以及O 型密封圈与介质相容。

6、 弯曲半径

安装胶管总成时应注意到胶管的最小弯曲半径，若弯曲半径过小，将降低胶管的承压能力并影响其使用寿命。

7、 摩擦

胶管在使用时如常与硬物接触或摩擦，建议在胶管外部加弹簧护套。

影响胶管总成使用情况的因素很多，只有按照工况正确选用胶管及接头，才能保证使用胶管的可靠性和经济性      这些因素有：有关苏强格高压总成的其它技术问题，欢迎垂询。

There are many factors which can affect the usage condifion of hose assembly,use the hose assembly and hose fittings in

acorrect way can ensure its reliability and anonomicaleffciency.these factors are as follows。

1.Hose Dimension

The selectlon of hose inside diameter must be correctly made.if the hose inslde diameter is too small,it will                                speed up the medium in the pipe-line,heated the system,lower the efficiency and produce excessive pressure

drop  which  will  affect  the  whole  system's  capability.if  it  fix  with   hose  clamp  or  cross  the  steel   board,the  outside  diameter  of     hose should be pay more attention.

2.Working     Pressure

The dynamic working pressure in this catalog refers to the allowable maximum pressure in condition of continuously    working.According to the safety modulusof hydraulic hose ruled by international standard,werecommend that the working    pressure is one quarter of the minimum blast Pressures.

3.Impact   Pressure   &Fatigue   Life-span

After determining the maximum system pressure for a hydraulic system,hoseselection can be made .For the hydaulic    system's pressure always be dynamic,there often appears an impact pressure,the maximum impact pressure is much higher    than the maximum system pressure.To be luckily,there is an over fallvalve in every hydraulic system,so high impact    pressure cannot affect the fatigue life-span seriously.As for hydaulic system whose impact pressure appears very frequently,    we advise you choose the special hydraulic hose which is able to endure the high impact Ptessure.

4.Temperature    Range

User must ensure that the temperatueris in an allowabie range of hose,if exceeding this range,the life-span of hose will be    shorten,and the capacity to endure pressure will get down.if the working condition temperature keep too high or too low in a     longtime,we advice you use the hose spring guard.

5.Chemical Compatibilit

If use special hydraulic medium,user should ensure the material of hose inner side and cover,the hose fittings and O-ring     can compatible with the special hydraulic mendium.

6.Bending   Radius

Pay more attention to its minimum bending radius when install the hose assembly,if the bending radius is smaller than      the minimum one,the capacity of enduring pressure will get down and life-span of hose will be shortened.

7 . Friction

We advised you use a spring guard if the hose assembly is always in the condition of touching and making friction with hard    object,Any  technical   question   about   Stronger   Hydraulic   hose   assembly,welcome   to   inquire!