METHOD FOR PRODUCING STABILIZER AND HEATING DEVICE

摘要

A method for producing a stabilizer and a heating device allows the entirety of a hollow member to be uniformly heated to a temperature necessary for heat treatment, even in a case in which a cross section varying hollow member is used as the starting material. In a preliminary heating process, energizing heating is performed between electrodes, which are arranged at cross section varying parts at both ends of large cross sectional area part, which can be heated. In an entire heating process, by performing energizing heating between electrodes, which are arranged at both ends of the cross section varying hollow member, the latter can be heated. In the preliminary heating process, it is desirable to perform energization heating at a part having a cross sectional area ratio of 90% or more with respect to the part having a large cross sectional area in the cross section varying part.

主权项

1. A method for producing a stabilizer using a hollow member including a part at which a cross sectional area varies along a central axis from a part having a small cross sectional area to a part having a large cross sectional area as a starting material, the method comprising:
a heating process in which the hollow member is heated up to a temperature necessary to perform heat treatment by performing an energization heating of the hollow member, wherein the heating process comprises a primary heating process and a secondary heating process, performed in this order, wherein in the primary heating process, the energization heating is performed between primary electrodes arranged at a cross-section varying part of both ends of the part having a large cross sectional area, and wherein in the secondary heating process, the energization heating is performed between secondary electrodes arranged at both ends of the hollow member.