ISO 18278-2:2016 抵抗溶接—溶接性—パート2：スポット溶接における溶接性の評価手順 | ページ 2

Foreword

ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.

The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 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, Part 2 (see www.iso.org/directives ).

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The committee responsible for this document is ISO/TC 44, Welding and allied processes, Subcommittee SC 6, Resistance welding and allied mechanical joining.

Requests for official interpretations of any aspect of this document should be directed to the Secretariat of ISO/TC 44/SC 6 via your national standards body. A complete listing of these bodies can be found at www.iso.org .

This second edition cancels and replaces the first edition (ISO 18278-2:2004), which has been technically revised.

ISO 18278 consists of the following parts, under the general title Resistance welding — Weldability:

• Part 1: General requirements for the evaluation of weldability for resistance spot, seam and projection welding of metallic materials
• Part 2: Evaluation procedures for weldability in spot welding

Introduction

This document describes procedures for evaluating the resistance spot welding weldability by determining the welding current range and electrode life.

These procedures can be used to evaluate the following:

• a) the effect of electrode material, shape, dimensions and electrode cooling;
• b) the effect of material types and thicknesses and coatings being welded;
• c) the effect of welding conditions;
• d) the effect of welding equipment.

1 Scope

This part of ISO 18278 provides specific test procedures for the determination of the acceptable welding current range and the electrode life.

It is applicable for the evaluation of the weldability of assemblies of uncoated and coated sheets of individual thicknesses from 0,4 mm to 6,0 mm.

2 Normative references

The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. 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 669, ISO 14373, ISO 17677-1 and ISO 18278-1 apply.

Bibliography