ISO 4992-2:2020 钢铸件 超声波检验 第2部分：高强度组分钢铸件

标准编号：ISO 4992-2:2020

中文名称：钢铸件 超声波检验 第2部分：高强度组分钢铸件

英文名称：Steel castings — Ultrasonic testing — Part 2: Steel castings for highly stressed components

发布日期：2020-03

标准范围

本文件规定了高应力部件钢铸件（含铁素体结构）的超声波检测要求，以及通过脉冲回波技术确定内部不连续性的方法。购买者根据对性能或安全的需求来确定部件是否承受了高应力。本文件适用于通常经过晶粒细化热处理且壁厚不超过600 mm的铸钢件的超声波检测。对于更大的壁厚，有关试验程序和验收水平的特殊协议适用。本文件不适用于奥氏体钢和接头焊缝。

This document specifies the requirements for the ultrasonic testing of steel castings (with ferritic structure) for highly stressed components, and the methods for determining internal discontinuities by the pulse-echo technique. Purchasers determine if components are highly stressed based on the need for performance or safety.This document applies to the ultrasonic testing of steel castings which have usually received a grain-refining heat treatment and which have wall thicknesses up to and including 600 mm. For greater wall thicknesses, special agreements apply with respect to the test procedure and the acceptance levels.This document does not apply to austenitic steels and to joint welds.

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