Bend Test - Soyer BMK-12 W Operating Instructions Manual
Stud welder
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- Quick start manual (34 pages) ,
- Operating instructions manual (68 pages)
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BMK-12 W
7.3.3
Bend test
The bend test is a simple work test which serves to roughly check the setting values
selected. The welding zone is subjected to undefined tension, pressure and bending.
A minimum of 3 studs is welded and bent to an angle of 30° by means of a tube that
is slipped over the stud. The test is considered as successful, if no superficial fissure
or fracture is detected in the welding zone.
Bend test with tube placed upon the stud
Bend the studs by 30° when welding with capacitor discharge.
With drawn arc welding using ceramic ferrules or shielding gas and with short-
cycle drawn arc welding, bend the studs by 60°.
Good welded joint. Optimum setting
Tearing of parent metal.
Good welded joint. Optimum setting
Fracture above stud flange.
Poor-quality welded joint
Fracture in the heat-affected zone.
Bend test with hammer
57
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