Abstract: The present invention is a thermal processing unit including: a heating-furnace body whose upper end has an opening; a heating unit provided on an inside wall of the heating-furnace body; a reaction container consisting of a single tube contained in the heating-furnace body; a gas-discharging-pipe connecting portion formed at an upper portion of the reaction container; and a first temperature controlling unit provided around the gas-discharging-pipe connecting portion.

Abstract: The present invention is a thermal processing unit including: a heating-furnace body whose upper end has an opening; a heating unit provided on an inside wall of the heating-furnace body; a reaction container consisting of a single tube contained in the heating-furnace body; a gas-discharging-pipe connecting portion formed at an upper portion of the reaction container; and a first temperature controlling unit provided around the gas-discharging-pipe connecting portion.

Abstract: The present invention is a thermal processing unit including: a heating-furnace body whose upper end has an opening; a heating unit provided on an inside wall of the heating-furnace body; a reaction container consisting of a single tube contained in the heating-furnace body; a gas-discharging-pipe connecting portion formed at an upper portion of the reaction container; and a first temperature controlling unit provided around the gas-discharging-pipe connecting portion.

Abstract: The present invention is a thermal processing unit including: a heating-furnace body whose upper end has an opening; a heating unit provided on an inside wall of the heating-furnace body; a reaction container consisting of a single tube contained in the heating-furnace body; a gas-discharging-pipe connecting portion formed at an upper portion of the reaction container; and a first temperature controlling unit provided around the gas-discharging-pipe connecting portion.

Abstract: A rod-shaped heater provided is composed of a carbon wire heating element 2 sealed in a small or large diameter quartz glass tube, a small diameter quartz glass tube portions 3a and 3b charged with compressed wire carbon members at opposite ends thereof; a sealed terminal section 10 having connection lines 11a and 11b for power supply held between the compressed wire carbon members charged in the small diameter quartz glass tube. The connection lines and the carbon wire heating element are electrically connected by way of the wire carbon members. This rod-shaped heater using the carbon wire heating element is suitable for readily raising the temperature of the agent in the storage tank of the wet etching agent or the grinding agent.

Abstract: A rod-shaped heater provided is composed of a carbon wire heating element 2 sealed in a small or large diameter quartz glass tube, a small diameter quartz glass tube portions 3a and 3b charged with compressed wire carbon members at opposite ends thereof; a sealed terminal section 10 having connection lines 11a and 11b for power supply held between the compressed wire carbon members charged in the small diameter quartz glass tube. The connection lines and the carbon wire heating element are electrically connected by way of the wire carbon members. This rod-shaped heater using the carbon wire heating element is suitable for readily raising the temperature of the agent in the storage tank of the wet etching agent or the grinding agent.

Abstract: The heat treatment apparatus has the reaction vessel and the holding tool contained in the reaction vessel for holding a plurality of objects to be processed. The lower end of the reaction vessel is closed by the cover and the insulating unit is installed between the cover and the holding tool. On the top of the insulating unit, the heating unit having a heating resistor composed of a carbon material of high-purity sealed in a quartz plate is installed. Heat insulators are installed under the heating unit. The insulating unit is fixed to the cover, and the revolving shaft for rotating the holding tool passes in the center of the insulating unit, and the electric feeding line member for feeding electric power to the heating unit is arranged outside of the insulating unit.

Abstract: A rod-shaped heater provided is composed of a carbon wire heating element 2 sealed in a small or large diameter quartz glass tube, a small diameter quartz glass tube portions 3a and 3b charged with compressed wire carbon members at opposite ends thereof; a sealed terminal section 10 having connection lines 11a and 11b for power supply held between the compressed wire carbon members charged in the small diameter quartz glass tube. The connection lines and the carbon wire heating element are electrically connected by way of the wire carbon members. This rod-shaped heater using the carbon wire heating element is suitable for readily raising the temperature of the agent in the storage tank of the wet etching agent or the grinding agent.

Abstract: A sealing terminal includes internal connection lines which are connected to heating elements and external connection lines via which power is supplied. A quartz glass body includes a plurality of grooves in its outer surface to retain the internal and external connection lines in place. Conductive foils are used to connect the internal and external lines which are housed in a quartz glass tube so that the ends of the lines project out of the respective ends thereof. A plug is disposed in the lower end of the tube to close the same. Spark generation is prevented while a low electrical resistance sealed terminal which is simple in structure and quick and easy to assemble, results.

Abstract: A carbon heater comprising heater members (11, 111, 121 . . . 161, 212, 222, 315, 325 . . . 345, 411, 515, 612) in which a plurality of carbon fiber bundles having a plurality of carbon fibers whose diameter is 5 to 15 .mu.m bundled are woven into a longitudinally elongated shape such as a wire shape or a tape shape and the impurity content is less than 10 ppm in ashes.

Abstract: A helical heating wire is disposed so as to surround a reaction tube, and is held by a heat insulating structure. Support members are arranged at predetermined pitches on the inner circumference of the heat insulating structure to support the heating wire on the inner circumference of the heat insulating structure so as to enable the heating wire to make thermal expansion and thermal contraction. Fixing means are attached to one loop out of every suitable number of loops of the helical heating wire to fix the heating wire to the heat insulating structure.