To uniformly heat a metal tube by a high-frequency heating coil, in a hot processing device of a metal tube.
When a bend (warpage) is present in a metal tube W having passed through a bending fulcrum member 12, a space between the outer periphery of the metal tube W and the inner periphery of a high-frequency heating coil 13 becomes non-uniform and the metal tube W is partially set at high temperature or low temperature; but a movable rack 17 with the high-frequency heating coil 13 fixed thereto is subjected to floating support to a fixed rack 16 through a floating support means 18, and a plurality of guide members 20 abutting on the outer peripheral surface of the metal tube W are arranged on the movable rack 17; thereby the high-frequency heating coil 13 is centered along with the movable rack 17 in accordance with the bend (warpage) of the metal tube W, and the space between the outer periphery of the metal tube W and the inner periphery of the high-frequency heating coil 13 is uniformized, whereby the metal tube W can be uniformly heated.
| JPH0671345A | 1994-03-15 | |||
| JPS5186057A | 1976-07-28 | |||
| JPS62294134A | 1987-12-21 | |||
| JPH05309436A | 1993-11-22 | |||
| JP2001303133A | 2001-10-31 | |||
| JP2003064414A | 2003-03-05 |
Kazuaki Niki
Nude Shima Shinji
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