<p>沈阳 流体管 Ф219*6 20#(GB/T8163-1999) 鞍钢 5310 - - <br />
沈阳 流体管 Ф273*8 20#(GB/T8163-1999) 建龙 5210 - - <br />
沈阳 流体管 Ф57*3.5 20#(GB/T8163-1999) 山东 5260 - - <br />
沈阳 流体管 Ф89*4.5 20#(GB/T8163-1999) 磐石 5060 - - </p>
<p>1.3 液压管路疲劳破坏或老化 大量硬液压管路断口的观察和分析表明,硬管的破裂是一种疲劳破坏,所以在管路上必定存在交变载荷的作用。当液压系统工作时,液压管路要承受较高的压力,再加上压力不稳定产生的交变应力、设备振动而产生的振动应力、装配应力等的共同作用,使硬管在材料缺陷处、腐蚀点或损伤处产生应力集中现象,管路发生疲劳破坏断裂而漏油。对于橡胶管路则会从高温、高压、弯曲、扭曲严重的地方发生老化、变硬和龟裂,最后油管爆破而漏油。</p>
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