ulse replies;Specification (approval);Specifications;Steels;Surface discontinuities;Surfaces;Testing;Testing conditions;Ultrasonic testing;Wall thicknesses【摘要】: This part of ISO 4992 specifies the requirements for the ultrasonic examination of steel castings (with ferriticstructure) for general purposes, and the methods for determining internal discontinuities by the pulse-echotechnique.This part of ISO 4992 applies to the ultrasonic examination of steel castings which have usually received agrain-refining heat treatment and which have wall thicknesses up to and including 600 mm. For greater wallthicknesses, special agreements apply with respect to the test procedure and recording levels.This part of ISO 4992 does not apply to austenitic steels and joint welds.【中国标准分类号】: J31【国际标准分类号】: 77_040_20;77_140_80【页数】: 30P;A4【正文语种】: 英语 | 欢迎光临 世界资料网论坛 (http://bbs.infoeach.com/) | Powered by Discuz! X2.5 |