UNE-EN ISO 18278-2:2016

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Purpose
5 Welding equipment
   5.1 General
   5.2 Electrodes
   5.3 Welding current
   5.4 Mechanical system
   5.5 Parameter measurement
6 Range of qualification
7 Test specimen characteristics
   7.1 Materials
   7.2 Assemblies
8 Preliminary adjustments
   8.1 Electrode position check under electrode force
        used for the test
   8.2 Electrode conditioning
9 Determination of the acceptable welding current range
   9.1 Test specimens
   9.2 Welding parameters
   9.3 Acceptance criteria
   9.4 Procedure
10 Estimation of electrode lifetime N
   10.1 Essentials of the test
   10.2 Adjustment of machine settings
   10.3 Procedure
   10.4 Test criteria, interpretation of results
11 Specific conditions for steel sheet customer
   qualification
   11.1 Purpose
   11.2 Material
   11.3 Assemblies
   11.4 Welding parameters
   11.5 Acceptance criteria
12 Test report
   12.1 General
   12.2 Available welding current range
   12.3 Electrode lifetime
Annex A (normative) Profile tolerances and control gauges
        for electrodes
Annex B (normative) Electrode position check
Annex C (normative) Determination of available welding
        current range
Annex D (informative) Test specimens for mechanical
        characterisation
Annex E (informative) Test sheet - Available welding
        current range
Annex F (informative) Test sheet - Lifetime of electrodes
Bibliography

This document provides specific test procedures for the determination of the acceptable welding current range and the electrode life.This document is applicable for the evaluation of the weldability of assemblies of uncoated and coated sheets of individual thicknesses from 0,4 mm to 4,5 mm.