Soyer BMS-10N, Operating Instructions Manual, Page: 38 / 69

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Quality control
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7 Quality control
7.1 General
The 0905 DVS Guideline, part 2, of April 1979 is applicable with regard to
quality assurance of stud weld joints. The tests described in this section are
written in simplified terms, following above regulation. They refer to work tests
that are carried out and supervised by the user prior to and during welding.
Heinz Soyer Bolzenschweißtechnik GmbH is a member of the German Welding
Society (DVS = Deutscher Verband für Schweißtechnik e.V), Munich.
7.2 Demands on the company
The company must employ a technical supervisor responsible for welding
matters, as well as qualified operating personnel for stud welding (see DVS
Guideline 0905, part 2, section 4).
7.3 Proof of qualification
In the case of components which documentation must be provided for, or stud
welding works which as per DIN 4100, DIN 4113 are subject to acceptance,
the processing company must submit a certificate of competence or a proof of
qualification for working with stud welding equipment (see DVS Guideline 0905,
part 2, sections 4.1 and 4.2). The proof of qualification applies in particular to
the fastening of structures that are relevant in terms of safety regulations. When
being used in the building industry, only approved base and stud materials
may be used (for example, see DIN 4100, section 2.1, certificate of approval
for stainless steel ifBT; DIN 4113, part 2).
7.4 Type and scope of test
Provided that the SOYER stud welding system is properly used and the
materials are appropriately selected, the strength of the welding joint (welding
zone) will always be stronger than that of the stud or base material. The follow-
ing tests are carried out in general practice:
• Standard work test (see DVS Guideline 0905, part 2, section 5.1.2)
• Simplified work test (see DVS Guideline 0905, part 2, section 5.1.2)
7.4.1 Standard work test
Generally, standard work tests have to be carried out and supervised by the
user before welding at a structure and after a certain number of welds has
been made. The number of welds after which a standard work test is required
is agreed upon with the customer.