To provide a heating furnace uniformizing temperature distribution in a heat treatment space at each stage within a heat treatment chamber.
The heating furnace 1 includes: a hot air circulation flow passage 30 making hot air circulate and flow; and the heat treatment chamber 10 arranged immediately above a heater 21 and a blower 23 and making the hot air in the hot air circulation flow passage 30 branch to and pass through the heat treatment spaces 13a-13e at the respective stages. The upstream side of the heat treatment space 13a-13e at each stage includes: a bent thermal loss control plate 51a-51e projecting longer to the upstream side as a distance from the heater 21 increases; first and second mesh materials 53, 55 through which the hot air introduced to the heat treatment space 13a-13e is made to pass sequentially; and a heat distribution control plate 57 provided between the first and second mesh materials 53, 55 and controlling heat distribution in the horizontal direction of the heat treatment space 13a-13e.
AKIMOTO KATSUMI
KAMIYA SOHIRO
KATAYASU TAKUO
ITO TAKESHI
OMORI MIKIO
| JP2001012857A | 2001-01-19 | |||
| JPH0518682A | 1993-01-26 | |||
| JP2008241076A | 2008-10-09 | |||
| JP2009047358A | 2009-03-05 | |||
| JP2003322476A | 2003-11-14 | |||
| JPH11125490A | 1999-05-11 | |||
| JP2001012857A | 2001-01-19 | |||
| JPH0518682A | 1993-01-26 | |||
| JP2008241076A | 2008-10-09 | |||
| JP2009047358A | 2009-03-05 | |||
| JP2003322476A | 2003-11-14 | |||
| JPH11125490A | 1999-05-11 |
Yoshiki Kuroki
Takashi Mikami
Yasunori Ishizaka