标准号：ISO 6621-5-2005
实施状态：作废
中文名称：内燃机.活塞环.第5部分:质量要求
英文名称：Internal combustion engines - Piston rings - Part 5: Quality requirements
发布日期：2005-10
被替代标准：ISO 6621-5-2013
代替标准：ISO 6621-5-1988;ISO/DIS 6621-5-2004
采用标准：BS ISO 6621-5-2006,IDT;GB/T 1149.4-2008,IDT
起草单位：ISO/TC 22
标准简介：This part of ISO 6621 specifies those quality aspects that are capable of definition but not normally found on a drawing specification.
It covers the following:
— single-piece piston rings of grey cast iron or steel;
— multi-piece piston rings (oil control rings) consisting of cast iron parts and spring components;
— single-piece and multi-piece oil control rings of steel, i.e. oil control rings in the form of strip steel components or steel segments (rails) with spring expander components.
In addition to specifying certain of the limits of acceptance relating to inspection measuring principles (covered by ISO 6621-2), this part of ISO 6621 also covers those features for which no recognized quantitative measurement procedures exist and which are only checked visually with normal eyesight (spectacles if worn normally) and without magnification. Such features (superficial defects) are additional to the standard tolerances of ring width, radial wall thickness and closed gap.
This part of ISO 6621 does not establish acceptable quality levels (AQL), it being left to manufacturer and client to decide the appropriate levels jointly. In this case, the recommendations of ISO 2859 are followed.
This part of ISO 6621 specifies the quality requirements of piston rings for both reciprocating internal combustion engines and compressors working under analogous conditions. It is applicable to all such rings of a diameter ≤ 200 mm.
文件格式：PDF
文件大小：266.75KB
文件页数：22
（以上信息更新时间为：2019-11-22）
ISO 6621-5-2005 内燃机.活塞环.第5部分_质量要求.pdf
(266.75 KB)
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