Manufacturing method of stabilizer and stabilizer
AssigneeNHK Spring Co., Ltd.
InventorsYoshinobu MINO, Keita TAKAHASHI, Shintaro KUMAI
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Abstract
According to an embodiment, a manufacturing method of a stabilizer includes performing a bend processing on a workpiece having a bar shape to form a curved portion in the workpiece, providing a conductor, which is electrically floating, to face an outer circumferential surface of a bend in the curved portion, attaching a pair of terminals connected to a power source, which is capable of supplying an alternating current, to the workpiece, and heating the workpiece by applying the alternating current to the workpiece via the pair of terminals.
Claims13
A manufacturing method of a stabilizer, comprising:
- performing a bend processing on a workpiece having a bar shape to form a curved portion in the workpiece;
- providing a conductor, which is electrically floating, to face an outer circumferential surface of a bend in the curved portion;
- attaching a pair of terminals connected to a power source, which is capable of supplying an alternating current, to the workpiece;
- and
- heating the workpiece by applying the alternating current to the workpiece via the pair of terminals.
A manufacturing method of a stabilizer, comprising:
- performing a bend processing on a workpiece having a bar shape to form a first curved portion and a second curved portion in the workpiece;
- providing a conductor, which is electrically floating, to face an outer circumferential surface of a bend in the first curved portion;
- providing a ferromagnetic body to face an inner circumferential surface of a bend in the second curved portion;
- attaching a pair of terminals connected to a power source, which is capable of supplying an alternating current, to the workpiece;
- and
- heating the workpiece by applying the alternating current to the workpiece via the pair of terminals.
A stabilizer having a curved portion and adapted to be arranged in a suspension mechanism of a vehicle, the stabilizer comprising:
- a torsion portion generating elastic restoring force;
- an arm portion extending in a direction different from that of the torsion portion;
- and
- a curved portion connecting the torsion portion with the arm portion, wherein
- a depth of a decarburization layer in the torsion portion from a surface of the torsion portion is 200 μm or less, and
- an absolute value of a difference between a grain size number of prior austenite grain boundaries of an outer circumferential surface of a bend in the curved portion and a grain size number of prior austenite grain boundaries of an inner circumferential surface of a bend in the curved portion is 2 or less.
Dependencies are inferred from the claim text.