Method of welding a weld stud to a workpiece and of checking the strength of the welded joint
AssigneeNewfrey LLC
InventorsFrank Drexler, Joachim Schneider, Hans-Gerd Kortmann
Life of this patent
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Abstract
A method of welding a weld stud to a workpiece and of checking the strength of the welded joint includes the steps of providing a tool, a workpiece, and a weld stud, the weld stud including a shank and a polygonal shaped head; welding the weld stud onto the workpiece; applying the tool to the polygonal shaped head section of the stud; applying a predetermined test torque to the weld stud with the tool; and checking the welded joint for satisfactory acceptance of the test torque.
Claims13
A method of welding a weld stud to a workpiece and of checking the strength of the welded joint, wherein the method includes the steps:
- providing a tool, a workpiece, and a weld stud, the weld stud comprising:
- a shank;
- a flange axially adjoining the shank, the flange projects radially relative to the shank and defines a polygon shaped outer circumference;
- an annular section axially adjoining the flange and including an axially facing and radially extending annular weld surface;
- and
- the annular section and the flange comprise a head section, and the polygonal shape of the flange extends over the annular section up to its axially facing annular weld surface;
- welding the weld stud onto the workpiece by drawn-arc stud welding;
- applying the tool to the polygonal shaped head section of the stud;
- applying a predetermined test torque to the weld stud with the tool;
- and
- checking the welded joint for satisfactory acceptance of the test torque.
A method of assembling a fastening arrangement onto a workpiece, wherein the method includes the steps:
- providing a torque application tool, a workpiece, and fastening element;
- providing a weld stud, the weld stud comprising;
- a shank;
- a flange axially adjoining and projecting radially from the shank;
- an annular section axially adjoining the flange and including an axially facing and radially extending annular welding surface which is weldable to the workpiece;
- and
- wherein the annular section directly adjoins the flange, and the annular section and the flange form a head section, and the head section includes a polygonal shaped outer perimeter and the polygonal shape outer perimeter extends over the annular section up to its axially facing annular weld surface;
- welding the weld stud onto the workpiece by drawn-arc stud welding;
- applying the tool to the polygonal shaped head section of the stud;
- applying a predetermined test torque to the weld stud with the tool;
- checking the welded joint has absorbed the test torque without damage;
- and
- fixing the fastening element to the weld stud.
Dependencies are inferred from the claim text.