Method of manufacturing a car stabilizer
AssigneeNHK Spring Co., Ltd.
InventorsAkira Ohno, Kanji Inoue
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Abstract
A car stabilizer and a manufacturing method therefor are disclosed. In this method, a straight elongated starting material of carbon steel with a carbon content of 0.10% to 0.35% is first directly quenched by quick heating, and then bent into a predetermined shape. Thereafter, the material is annealed at a low temperature of 100.degree. C. to 400.degree. C., shot-peened as required, and then coated. Thus, a stabilizer is obtained as a final product. The coating may be executed between the steps of quenching and bending.
Claims9
A method for manufacturing a car stabilizer from a straight elongated starting material formed of carbon steel with a carbon content of 0.10% to 0.35%, comprising the steps of
- quickly heating said straight starting material to a temperature of 900.degree. C. or more within 50 seconds;
- then quenching the hot material which was heated by said quick heating;
- then bending the quenched material into a predetermined shape without tempering of the quenched material;
- and
- then annealing the untempered, bent, quenched material at low temperature.
Dependencies are inferred from the claim text.