Technical Information

Technical information to make your welding technology even safer

Stud welding in accordance with DIN EN ISO 14555

Arc stud welding is a pressure welding process in which stud end and base material are melted by a short burning arc and then joined with low force. In order to achieve perfect results, not only the materials, surfaces and devices must be suitable, but electrical processes must also be coordinated with the mechanical movement. For KÖCO, impeccable quality is the top priority.

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Safe stud welding in workshops and on building sites...

Arc stud welding is a pressure welding process. Bolt end and base material are melted by a short burning arc and then joined with low force. In order to achieve perfect results, not only the materials, surfaces and devices must be suitable, but electrical processes must also be coordinated with the mechanical movement.

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Drawn arc stud welding - thin, coated sheet metal

For stud welding of thin sheets (here from approx. 0.5 to approx. 2.75 mm sheet thickness), only welding processes with a low penetration are suitable. Studs up to 8 mm are usually welded, mostly between 3 and 6 mm. In series production, but especially in mass production (e.g. "white goods", components for vehicles), more and more coated sheets are being used.

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Stud welding in building construction

All KÖCO welding studs are made from materials suitable for stud welding. Dimensions and design of our standard products conform to DIN EN ISO 13918, any non-standard products supplied will be produced to correspond to the norm. If you wish to use a type of stud other than those listed, please send us your enquiry and consult our specialists about your welding task. KÖCO welding studs are available in different materials. Upon request the properties of each can be documented by test report 2.2 or inspection certificate 3.1 or 3.2 (EN 10204).

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Welded-on Shear Connectors in accordance with Eurocode 4

Head bolts according to DIN EN ISO 13918 are used, for example, in the construction of bridges. They form the bond between a steel beam and a concrete slab, so that they work together. They offer many advantages due to their compact and rigid construction, the simple fire protection with concreted chambers and the fast welding of the head bolts. Dimensioning and production are based on the relevant standards, in particular Eurocode 4.

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Advanced quality assurance in drawn-arc stud welding

The drawn-arc stud welding has been firmly established for many years in the welding of head studs in composite construction and in the manufacturing of steel components in solid construction. This process requires increased economy and safety. A well-designed stud weld can withstand higher loads than a stud or base material.

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KÖCO - Composite construction

Advantageous and innovative buildings are often characterised by ideal combinations of different building materials. The favourable interaction of steel with its high tensile strength and ductility and concrete with its high compressive strength and good corrosion resistance has been known in solid construction for a long time. In composite construction, it is now possible to combine the positive properties of steel and solid construction without having to accept their disadvantages.

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