Svetsning och lödning

Ämnesområden: Svetsmetoder
Kommittébeteckning: SIS/TK 134 (Svetsteknik)
Källa: ISO
Svarsdatum: den 10 apr 2020
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This International Standard specifies requirements for resistance spot welding in the fabrication of assemblies of aluminium sheet, extrusions (both work- and age-hardening alloys) and/or cast material comprising two or three thicknesses of metal, where the maximum single (sheet) thickness of components to be welded is within the range 0,6 mm to 6 mm.

This International Standard is applicable to the welding of sheets or plates of dissimilar thickness where the thickness ratio is less than or equal to 3 : 1. It applies to the welding of three thicknesses where the total thickness is less than or equal to 9 mm.

Welding with the following types of machines is within the scope of this International Standard:

— pedestal welding machines;

— gun welders;

— automatic welding equipment where the components are fed by robots or automatic feeding equipment;

— multi-welders;

— robotic welders.

Information on appropriate welding equipment is given in Annex A and on spot welding conditions in Annex B. The latter are for guidance only and may require modification depending on service conditions of the fabrication, type of welding equipment, characteristics of the secondary circuit, electrode material and geometry.

The welding of coated material, e.g. zinc-coated or anodised material, is not within the scope of this International Standard.

Kommittébeteckning: SIS/TK 134 (Svetsteknik)
Källa: ISO
Svarsdatum: den 1 maj 2020
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This document specifies the requirements for the test methods for joint of micro-joining of 2G HTS to fulfil the ISO 17279-1 and ISO 17279-2 requirements.

Ämnesområden: Svetsfogar; Termoplastmaterial
Kommittébeteckning: SIS/TK 156 (Plast)
Källa: CEN
Svarsdatum: den 25 maj 2020
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This document provides quality levels for imperfections in thermoplastics welded joints. It applies to material thickness above 2,0 mm. Three quality levels are given in order to permit application for a wide range of welded fabrication. They are designated by symbols B, C and D, where B is the most stringent. The quality levels refer to production quality and not to the fitness-for-purpose (see 3.2) of the manufactured product. This document applies to the following thermoplastic materials in Table 1: Table 1 - Thermoplastic materials Abbreviation Material description ABS Acrylonitrile-butadiene-styrene plastic ECTFE Ethylene-chlorotrifluoroethylene copolymer FEP Fluorinated ethylene propylene PA-U Unplasticized Polyamide PB Polybutylene PE Polyethylene PFA Perfluoroalkoxy PP-B Polypropylene block copolymer PP-H Polypropylene homopolymer PP-R Polypropylene random copolymer PVC-C Chlorinated polyvinyl chloride PVC-U Unplasticised polyvinyl chloride (rigid PVC) PVDF Polyvinylidene fluoride and to the following welding processes: - heated tool welding; - electrofusion welding; - hot gas welding using filler rod only; - extrusion welding; - solvent welding of pipes.