GB/T 41966-2022Ultrasonic phased array testing method for seamless steel tubes (English PDF)

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1: Structure and Drafting Rules for Standardization Documents" drafting.

Introduction

As an important component of pressure piping for special equipment, seamless steel pipes are mainly used in steel pipe manufacturing, electric power, chemical equipment manufacturing and petroleum gas Natural gas pipeline laying and other industries. This document is formulated to vigorously promote phased array ultrasonic testing technology for seamless steel pipes.

In the field of non-destructive testing of seamless steel pipes, the conventional single (double) crystal echo testing technology is difficult to take into account the beam width and resolution, so there is a Low measurement efficiency, difficulty in achieving 100% coverage of the sound beam, difficulty in changing the detection angle and depth of focus, etc. Phased Array Ultrasonic Testing Technology Power Consumption Sub-scanning replaces part of mechanical scanning and wafer geometric splicing, which significantly reduces the complexity of scanning machinery and greatly improves the sensitivity of ultrasonic scanning.

The degree of consistency and system signal-to-noise ratio shortens the system debugging time and improves the ability and accessibility of ultrasonic nondestructive testing.

The formulation of this document is conducive to improving the detection efficiency and detection ability of seamless steel pipes, and promoting the progress of nondestructive testing technology for seamless steel pipes. Phased array ultrasonic testing method for seamless steel pipe

1 Scope

This document specifies the instruments and equipment, test blocks, testing methods, equipment settings, testing procedures, acceptance, Record and report.

This document applies to flaws in seamless steel pipes (hereinafter referred to as "steel pipes") with an outer diameter of not less than 6 mm and a ratio of wall thickness to outer diameter of not more than 0.2. phased array ultrasonic testing.

Note: The detection methods specified in this document are mainly used to detect defects that destroy the metallic continuity of steel pipes.

2 Normative references

The contents of the following documents constitute the essential provisions of this document through normative references in the text. Among them, dated references For documents, only the version corresponding to the date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to this document.

GB/T 5777-2019 Full-circumference automatic ultrasonic testing of longitudinal and/or transverse flaws in seamless and welded (except submerged arc welded) steel pipes

GB/T 9445 Qualification and certification of non-destructive testing personnel

GB/T 12604.1 Nondestructive Testing Terminology Ultrasonic Testing

GB/T 20490 Ultrasonic detection of lamination flaws in pressure-bearing seamless and welded (except submerged arc welded) steel pipes

GB/T 20737 General terms and definitions for nondestructive testing

GB/T 32563 Non-destructive Testing Ultrasonic Testing Phased Array Ultrasonic Testing Method

NB/T 47013.15 Non-destructive testing of pressure equipment - Part 15: Phased array ultrasonic testing

YB/T 4082 Comprehensive performance test method of automatic ultrasonic testing system for steel pipes and steel rods

ISO 11484 Steel products employer's non-destructive testing personnel qualification system (Steelproducts-Employer'squalifi- ISO 18563-1 Characterization and verification of ultrasonic phased array equipment for nondestructive testing Part 1: Instruments (Non-destructive

ISO 18563-2 Characterization and verification of ultrasonic phased array equipment for nondestructive testing Part 2: Probes (Non-destructive 3 Terms and Definitions The following terms and definitions defined in GB/T 12604.1, GB/T 20737, GB/T 32563 and NB/T 47013.15 apply to this document.

3 Terms and Definitions