标准摘要
[中文适用范围]: 本国际标准规定了飞机液压、燃料和润滑油系统中使用的聚四氟乙烯(PTFE)软管组件的要求,工作温度范围为:I类组件在-55°C(-67°F)至232°C(450°F)之间,II类组件在-55°C(-67°F)至135°C(275°F)之间,标称压力高达10,500 kPa(1,523 psi)(105 bar)。这些软管组件在相同温度和压力限制下也适用于航空航天气动系统,其中允许PTFE衬里壁面存在一定的气体扩散。 本国际标准涵盖以下类别的软管组件: — I类:带有耐腐蚀钢或钛部件接头的软管组件[232°C(450°F)]; — II类:带有耐腐蚀钢和铝部件接头的软管组件[135°C(275°F)],DN12及以上尺寸。 本国际标准中规定的软管组件不适用于气动存储系统。此外,对于超出本国际标准规定限值的安装或本国际标准未具体涵盖的应用(例如氧气),需经采购方批准。 [外文原描述]: ISO 10502:2012 specifies requirements for polytetrafluoroethylene (PTFE) hose assemblies for use in aircraft hydraulic, fuel and lubricating oil systems at temperatures between -55 °C (-67 °F) and 232 °C (450 °F) for Class I assemblies and between -55 °C (-67 °F) and 135 °C (275 °F) for Class II assemblies, and at nominal pressures up to 10 500 kPa (1 523 psi) (105 bar). The hose assemblies are also suitable for use within the same temperature and pressure limitations in aerospace pneumatic systems where some gaseous diffusion through the wall of the PTFE liner is tolerated. ISO 10502:2012 covers hose assemblies of the following classes: · class I: hose assemblies with fitting of corrosion-resistant steel or titanium parts [232 °C (450 °F)]; · class II: hose assemblies with fitting of corrosion-resistant steel and aluminium parts [135 °C (275 °F)], DN12 and larger.
英文名称Aerospace — Hose assemblies in polytetrafluoroethylene (PTFE) for use up to 232 °C and 10 500 kPa — Technical specifications and requirements