ISO 7963:2022 非破壊検査 — 超音波検査 — 校正ブロック番号の仕様2 | ページ 2

Foreword

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The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, 1. In particular, the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, 2 (see www.iso.org/directives ).

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This document was prepared by Technical Committee ISO/TC 135, Non-destructive testing, Subcommittee SC 3, Ultrasonic testing in collaboration with the European Committee for Standardization (CEN) Technical Committee CEN/TC 138, Non-destructive testing, in accordance with the Agreement on technical cooperation between ISO and CEN (Vienna Agreement).

This third edition cancels and replaces the second edition (ISO 7963:2006), which has been technically revised.

The main changes are as follows:

• document structure aligned with ISO 2400;
• normative references updated;
• wording updated;
• Annex A deleted and the relevant information shifted to the main text;
• Figures 1, 3 and 6 corrected;
• tempering aligned with ISO 2400.

Introduction

Calibration block No. 2 is made of steel and may be used for all ultrasonic testing, as calibration block No. 1 described in ISO 2400.

Calibration block No. 2 differs in size and shape from calibration block No.1 but is made from the same material.

Calibration block No. 2 is much smaller and lighter, and its geometry is much simpler than block No 1.

Calibration block No. 2 does not offer as much scope as the larger block No.1; in particular it is not meant to check an ultrasonic instrument completely.

However, calibration block No. 2 makes it possible, during practical testing, to check simply, from time to time, the setting of the time base and the sensitivity of the ultrasonic instrument. Moreover, it is suited to check the beam angle and the probe index point of miniature angle-beam probes.

The International Institute of Welding (IIW) and its members developed the designs of steel calibration blocks in the 1950s and 1960s which were originally indicated as “IIW calibration block 1” and “IIW calibration block 2”. These designs have been adopted widely and they form the basis of many blocks currently available.

The smaller type block is sometimes indicated as “Rompas block” or “miniature angle-beam block (MAB)”, respectively named after the original Dutch designer or the intended use.

Some commercially available blocks look similar to calibration block No. 2, however such blocks are not necessarily according to this document and can have different features, dimensions or materials.

The details of calibration block No. 2, as specified in this document, have been adapted over time.

1 Scope

This document specifies the requirements for the dimensions, material, manufacture and methods of use for calibration block No. 2 for setting and checking ultrasonic test equipment.

2 Normative references

The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.

3 Terms and definitions

For the purposes of this document, the terms and definitions given in ISO 5577 apply.

ISO and IEC maintain terminology databases for use in standardization at the following addresses:

Bibliography