NEN EN ISO 16432 : 2007

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols
5 Materials
   5.1 Form
   5.2 Steel grades
   5.3 Surface conditions
6 Component design and manufacture
   6.1 Component design
       6.1.1 General
       6.1.2 Placement of projections
   6.2 Projection dimensions
       6.2.1 General
       6.2.2 Dissimilar sheet thickness
       6.2.3 Multi-weld arrays
   6.3 Ancillary manufacturing considerations
7 Welding equipment
   7.1 Welding machine
   7.2 Electrode assembly (tooling)
   7.3 Design of electrode assembly
       7.3.1 Contact face
       7.3.2 Electrode inserts
       7.3.3 Electrode cooling
       7.3.4 Location of components (tooling)
       7.3.5 Tooling design considerations
8 Weld assessment - Type tests
   8.1 General
   8.2 Test requirements
       8.2.1 Weld diameter
       8.2.2 Weld fracture mode
       8.2.3 Weld strength
       8.2.4 Visual and metallographic examination
   8.3 Weld appearance - Surface condition
   8.4 Distortion
9 Weld assessment - Routine tests
   9.1 General
   9.2 Frequency of test
10 Repair of non-conforming assemblies
Annex A (informative) Recommendations for projection welding
        equipment
Annex B (informative) Relationship between sheet thickness
        and projection diameter (derived from ISO 8167)
Annex C (informative) Typical projection welding conditions
Annex D (informative) Partial list of steel types applicable
        to the standard
Bibliography

Provides requirements for embossed-resistance-projection welding in the fabrication of assemblies of uncoated and metallic coated low carbon steel comprising two thicknesses of metal, where the maximum single sheet thickness of components to be welded is within the range 0,4 mm to 3 mm for the following materials: - uncoated steels; - hot-dip zinc or iron-zinc alloy (galvannealed) coated steel; - electrolytic zinc, zinc-iron, or zinc-nickel coated steel; - aluminium coated steel; - zinc-aluminium coated steel.