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Quality Control
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6 Quality Control
6.1 General information
The DVS directive 0905, part 2 of April 1979 is valid with regard to ensuring the
quality of stud welded joints. The tests described in this section have been
written in a simplified form on the basis of this directive. They refer to work
tests which are carried out and controlled by the User prior to and during
welding works.
Heinz Soyer Bolzenschweißtechnik GmbH is a member of the Deutscher
Verband für Schweißtechnik e.V. (DVS) (German Welding Society), Munich.
6.2 Demands on the company
The company must appoint a responsible welding supervisor and employ
appropriately qualified operating personnel for stud welding (see DVS Directive
0905, part 2, section 4).
6.3 Proof of qualification
In the case of components which are subject to documentation requirements
and/or stud welding works which are subject to acceptance in compliance with
DIN 4100, DIN 4113, the manufacturing company must submit proof of
competence or a qualification certificate (see DVS Directive 0905, part 2,
sections 4.1 and 4.2). The competence qualification is applicable in particular
for fastening constructions concerning safety regulations. If the Stud Welder is
used in the construction industry, only permissible base and stud materials
(see e.g. DIN 4100, clause 2.1, registration license for stainless steel ifBT; DIN
4113, part 2) may be applied.
6.4 Type and scope of testing
If the SOYER stud welding system is handled in compliance with regulations
and the proper materials are selected, the welded joint strength (welding zone)
will always be higher than that of the stud or base material. In practical
operation, the following work tests are carried out:
• Normal work test (see DVS Directive 0905, part 2, section 5.1.2)
• Simplified work test (see DVS Directive 0905, part 2, section 5.1.2)