ISOTHERMAL QUENCHING APPARATUS BY GAS COOLING

摘要

PROBLEM TO BE SOLVED: To provide an isothermal quenching apparatus easily controlling temp. with gas cooling. ;SOLUTION: This apparatus is provided with a pressure vessel 1, a gas pressure adjusting device 12 for adjusting the gas pressure in the pressure vessel 1, a furnace 2 surrounding a heat insulating wall arranged in the pressure vessel 1 and being openable/closable to a part of the heat insulating wall, a cooling line 8 arranged in the pressure vessel 1 and cooling the gas in the furnace with a heat exchanger 5 and circulating with a cooling fan 6, a heater 11 arranged in the furnace and heating the gas in the furnace, a circulating fan for circulating the gas in the furnace and a control part for controlling so that the surface temp. and the center temp. of a treating body 9 becomes a setting temps. by inputting the surface and the center temps. of the treating body 9, the temp. in the furnace and the pressure in the pressure vessel and controlling the gas pressure adjusting device 12, cooling line 8, heater 11 and circulating fan.;COPYRIGHT: (C)1998,JPO