GOST R ISO 6520-1-2012

• gost-r-iso-6520-1-2012.pdf (888.64 KiB)
  ГОСТ Р ИСО 6520-1-2012

GOST R ISO 6520−1-2012 welding and allied processes. Classification of defects of geometry and of rock joints in metallic materials. Part 1. Fusion welding

GOST R ISO 6520−1-2012

NATIONAL STANDARD OF THE RUSSIAN FEDERATION

Welding and allied processes

CLASSIFICATION OF DEFECTS OF GEOMETRY AND OF ROCK JOINTS IN METALLIC MATERIALS

Part 1

Fusion welding

Welding and allied processes. Classification of geometric imperfections in metallic materials. Part 1: Fusion welding

OKS 25.160.40

Date of introduction 2014−01−01

Preface

1 PREPARED by the Federal state institution «Scientific-educational center «welding and control» at MGTU im.N. Uh. Bauman (FGU «NORSK» at MSTU.N. Uh. Bauman), the National Agency for Control of Welding (NAKS), Autonomous non-commercial organization «Head certification center of welders and specialists of welding production» on the basis of their own authentic translation into the Russian language of the international standard indicated in paragraph 4

2 SUBMITTED by the Technical Committee for standardization TC 364 «welding and allied processes"

3 APPROVED AND put INTO EFFECT by the Federal Agency for technical regulation and Metrology, dated 22 November 2012 N 1012-St

4 this standard is identical to international standard ISO 6520−1:2007* «welding and allied processes. Classification of defects of geometry in metallic materials. Part 1. Fusion welding» (ISO 6520−1:2007 (E/F) «Welding and allied process — Classification of geometric imperfections in metallic materials — Part 1: Fusion welding)

5 INTRODUCED FOR THE FIRST TIME


Application rules of this standard are established in GOST R 1.0−2012 (section 8). Information about the changes to this standard is published in the annual (as of January 1 of the current year) reference index «National standards» and the official text changes and amendments — in monthly information index «National standards». In case of revision (replacement) or cancellation of this standard a notification will be published in the upcoming issue of the monthly information index «National standards». Relevant information, notification and lyrics are also posted in the information system of General use — on the official website of the Federal Agency for technical regulation and Metrology on the Internet (gost.ru)

Introduction

International standard ISO 6520−1 developed by technical Committee ISO/ТК44 «welding and related processes», by the Subcommittee ПК7 «Terms and definitions».

This is the second edition of the standard replaces the first edition (ISO 6520−1:1998) under revision.

The standards of ISO 6520 include the following parts, under the General title «welding and allied processes. Classification of defects of geometry in metallic materials»:

— Part 1 fusion welding;

— Part 2 welding with pressure.

1 Scope

This part of ISO 6520 is the basis for the classification and description of weld imperfections.

For a more accurate classification of defects provides explanations and, where necessary, sketches.

Metallurgical defects are not considered.

Another possible system for the identification of defects according to ISO/TS 17845. Appendix B contains a relationship between the classification of defects in this standard and coding system of ISO/TS 17845.

Note — in addition to the names on two of the three official ISO languages (English and French) this part of ISO 6520 also contains the corresponding name in German.

2 Terms and definitions

This standard applies the following terms with respective definitions:

2.1 defect (imperfect ion): Inconsistent in the weld or a deviation from the required geometry.

2.2 unacceptable defect (defect): Defect, exceeding the norm.

3 defect Classification and explanations

The basis of the warning symbols shown in table 1, is their classification according to 6 main groups:

— 1: cracks;

— 2: a cavity;

— 3: solids;

— 4: nespeleja and lack of fusion;

— 5: deflection shape and size;

— 6: other defects.

Table 1 shows:

— in column 1 — a three-digit sequence number for the main groups of defects and the four-digit sequence number for subgroups;

— in column 2 — name of the defect in Russian, English, French and German;

— in column 3 — identify and/or explain the text;

— in column 4 — the drawings supplementing the definition, if necessary.

4 Types of cracks

Types of cracks depending on the reasons for their formation both during and after welding are presented in Appendix A. the Designation letter.

If you want a complete description of the cracks, you should use a combination of numerical designation from table 1 with the letter of Annex A.

5 Denote

To indicate defects following form is used: the gap (100) is designated as follows: defect ISO 6520−1-100.


Table 1 — Classification of defects

Annex a (informative). Types of cracks

Appendix A
(reference)

Annex B (reference). The relationship between the classification of defects in this standard and ISO/TS 17845

Appendix B
(reference)

Table B. 1 — Classification of defects according to ISO 6220−1* and ISO/TS 17845:2004
_________________
* The text of the document matches the original. — Note the manufacturer’s database.