Soyer BMS-10N, Руководство по эксплуатации

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7-29
Quality control
R
The standard work test is restricted to the stud diameter, base material and
type of equipment used. It comprises the following tests:
• Visual inspection (all samples)
• Tensile test (at least 3 samples )
• Bend test (at least 3 samples)
In case of doubt, the test scope should be extended in compliance with DVS
Guideline 0905, part 2, section 5.1.1.
7.4.2 Simplified work test
Simplified work tests serve to check the correct setting and function of the
equipment. They are carried out at the beginning of every working shift and
after several hours of interruption.
Simplified work tests include:
• Visual inspection (all samples)
• Bend test (all samples)
7.5 Test execution
7.5.1 Production of samples
The studs for the work test are welded on a sheet metal the minimum size of
which is 700 mm x 200 mm. Use the same welding positions and edge dis-
tances as on the component to be welded later. If it is possible and sensible
from an economical point of view, use parts that are identical to those used in
later production.
7.5.2 Visual inspection
The visual inspection serves as a rough check for major defects. The uniformity
of the weld is assessed. When in doubt, tensile and bend tests should be
carried out.
7.5.3 Tensile test
The tensile test serves to test the metallic bond of the stud with the base
metal. At least 3 studs are welded and then axially loaded by means of an
appropriate tension device until they break. If the customer demands that a
certain percentage of the welded studs should be tested with a specific test
load in production, a tension device with load indicator should be used.
If the stud breaks outside the welding zone, the test is regarded as successful.
If it breaks within the welding zone, however, the fractured surface must be
examined. The unwelded surface may not exceed a maximum of 20 % of the
welding surface. When in doubt, the breaking load in accordance with DIN
267, part 3, should be determined.