塑料.热塑性模制部件的连接.缺陷质量等级规范

[中文适用范围]： 本文件规定了热塑性模制部件中由于连接过程而产生的接头缺陷的质量水平。 本文件不描述在服务期间或加入之前可能产生的缺陷，例如装配不良。 ISO 23512 中定义的相关热连接工艺规范 (TJPS) 描述了连接前的正确准备工作。 规定了三个质量等级，以便能够广泛应用于以下连接工艺： a) 超声波焊接； b)超声波点焊； c) 红外线焊接； d) 热气对流焊接； e) 振动焊接； f) 旋转焊接； g) 激光焊接； h) 热板焊接； i) 取热：热空气；电、红外线和超声波。 它们用符号B、C和D表示，其中B是最严格的。 质量水平是指生产质量，而不是制造产品的适用性。 注：关于塑料管道、配件、阀门和/或辅助设备的连接以及由此产生的接头的性能评估的标准由 ISO/TC 138 制定和维护。 [外文原描述]： This document specifies quality levels for imperfections in joints in thermoplastic moulded components due to the joining process. This document does not describe imperfections that can be generated either during service or present before joining, such as poor fit up. The correct preparation before joining is described in the relevant thermal joining process specification (TJPS), as defined in ISO 23512. Three quality levels are specified in order to permit application for a wide range of the following joining processes: a) ultrasonic welding; b) ultrasonic spot welding; c) infrared welding; d) hot gas convection welding; e) vibration welding; f) spin welding; g) laser welding; h) hot plate welding; and i) heat staking: hot air; electrical, infrared and ultrasonic. They are designated by symbols B, C and D, where B is the most stringent. The quality levels refer to production quality and not to the fitness for purpose of the manufactured product. NOTE Standards on joining of plastic pipes, fittings, valves and/or auxiliary equipment, and the assessment of the properties of the resulting joints are developed and maintained by ISO/TC 138.