WELDING STUDS FOR DRAWN ARC STUD WELDING WITH SHIELDING GAS
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WELDING STUDS FOR DRAWN ARC STUD WELDING WITH SHIELDING GAS

1. Welding studs for drawn arc stud welding with shielding gas 1.1 Technical information Weld pool backing, form of the stud tip If shielding gas is used for weld pool backing during the stud weld, welding studs without pressed-in aluminium ball at the welding tip are used (see also DIN EN ISO 13918 Welding – Studs and ceramic ferrules for arc stud welding). Regarding the stud tip two forms have to be distinguished. Tip form 1 (standard acc. to DIN EN ISO 13918): According to DIN EN ISO 13918 the middle part of the stud tip is d2/3 (for stud types RD, MD, PD, ID) resp. d1/3 (for stud types...

Welding studs dimensions are given in the measurement tables (all dimensions in mm). All standardised welding studs conform to DIN EN ISO 13918. Not standardised welding studs are supplied according to DIN EN ISO 13918. Special welding elements, which are not described, are delivered upon request. Dimensions that are not listed in the measurement tables are delivered upon request. The nominal length (l2) always corresponds to the length after welding. Depending on the diameter the length before welding (l1) is larger by a weld allowance of 1 to 5 mm. Surface protection Usually our welding...

Threaded stud with reduced shaft (type RD acc. to DIN EN ISO 13918) before welding / after welding before welding / after welding The threaded stud type RD is threaded almost to the top of the welding tip which is reduced to about the core diameter of the thread. Thus the fillet diameter will only be slightly (0,5-1 mm) bigger than the external diameter of the thread. It is worthy of note that the reduction of the welding tip diminishes the bearing force of the stud by approximately 15% in comparison to the type MD/PD/FD. Thus - if necessary - the next bigger diameter should be chosen....

Threaded stud with practically complete thread (type MD acc. to DIN EN ISO 13918, before: type MPF) before welding / after welding before welding / after welding With the revision of April 2018 the stud type MD was included into DIN EN ISO 13918:2018 for the first time. The stud type MD acc. to DIN EN ISO 13918:2018 is mostly identic to the not standardised stud type MPF which we already produced for many years. There are only deviations regarding the dimension y (non-threaded part) for M6 (before: 3 mm), M10 (before: 7 mm) and M12 (before: 8 mm). The threaded stud type MD is threaded to...

Threaded stud with partial thread (type PD acc. to DIN EN ISO 13918) before welding / after welding before welding / after welding The threaded stud type PD has a partial thread. The diameter of the unthreaded stud section on the welding tip corresponds to the pitch diameter of the thread. Thus the diameter of the weld-fillet is approximately 3-4 mm larger than the external diameter of the thread. Dimensions d1 Material (item number) d2 = thread pitch acc. to DIN 13-1 *d3 and h are approximate values. 2The ending „OK-NÜ“ refers to studs with tip form 1. If tip form 2 is requested, in the...

Threaded stud with full thread (type FD acc. to DIN EN ISO 13918) before welding / after welding before welding / after welding The threaded stud type FD is threaded to the top of the welding tip. Thus after welding the stud is threaded up to the weld-fillet. The diameter of the weld-fillet is approximately 3-4 mm larger than the external diameter of the thread. Dimensions Material (item number) * *d3 and h are approximate values. 1The ending „OK-NÜ“ refers to studs with tip form 1. If tip form 2 is requested, in the item number „-OK-NÜ“ must be replaced by „-OK-SÜ“ resp. „-OK“ (see...

Internally threaded stud (type ID acc. to DIN EN ISO 13918) before welding / after welding before welding / after welding Material (item number) = thread pitch acc. to DIN 13-1 for l2 < 20 mm *d3 and h are approximate values. 2The ending „OK-NÜ“ refers to studs with tip form 1. If tip form 2 is requested, in the item number „-OK-NÜ“ must be replaced by „-OK-SÜ“ resp. „-OK“ (see explanations on the tip form in chapter 1.1). In the item number XXX has to be replaced by the respective welding element length l 2 (e.g. 030 for 30 mm). Explanations to the used materials can be found in chapter...

Non-threaded stud (type UD acc. to DIN EN ISO 13918) before welding / after welding before welding / after welding Material (item number) *d2 and h are approximate values. 1The ending „OK-NÜ“ refers to studs with tip form 1. If tip form 2 is requested, in the item number „-OK-NÜ“ must be replaced by „-OK-SÜ“ resp. „-OK“ (see explanations on the tip form in chapter 1.1). In the item number XXX has to be replaced by the respective welding element length l 2 (e.g. 030 for 30 mm). Explanations to the used materials can be found in chapter 1.1. Available surface treatments can be found in...

Silicone cover caps Silicone cover caps protect the mechanical important areas of the welding elements during painting and powder coating as well as during the burning-in process (permanent temperature ≤ 210° C, short temperature ≤ 300° C). 1.8.1 Silicone cover caps for threaded studs and non-threaded studs Available dimensions upon request. 1.8.2 Silicone cover caps for internally threaded studs Available dimensions upon request. 1. Welding studs for drawn arc stud welding with shielding gas

Annex: Accessories and wear parts for stud welding guns 2. Accessories and wear parts for stud welding guns 2.1 Threaded stud (type RD, MD, PD, FD), internally threaded stud (type ID), non-threaded stud (type UD) Stud dimensions Chuck (item number) Stand shielding gas (gun type: item number) 2. Accessories and wear parts for stud welding

© Bolte GmbH Last update 09/18. Texts and illustrations correspond with technical standard at the date of printing. Errors and omissions excepted.