The analyzer of the present invention is specifically adapted to provide moisture determinations for foods and other agricultural material. It allows the operator to introduce a precise weight of sample into a crucible in a closed furnace in a controlled environment through an access port in the furnace cover. The access port in the cover can be tapered to allow easy access to an underlying aligned crucible and allow an operator to add and remove sample material from the crucible until a precise desired sample weight is reached as measured by a balance within the furnace. The access port is enclosed by an insulated cover after the samples are sequentially placed in the crucibles.

The present invention relates to a method of manufacturing a slag discharge door, which is provided separately from a molten-steel discharge opening in an electric furnace and opens and closes a slag discharge opening for discharging slag. The method of manufacturing the slag discharge door, which moves up and down on the slag discharge opening to open and close the slag discharge opening, includes the steps of: forming a door body by forging, forming a coolant passage, a coolant inlet, and a coolant outlet in the door body by drilling, and then finishing a passage that blocks a portion that is open toward an outer surface of the door body.

A heat treatment system may include: a first supply device; a first heat treatment furnace; a first recovery device; a second supply device; a second heat treatment furnace; and a second recovery device. The first heat treatment furnace may include: a heat treatment unit; and a first conveyor configured to convey the saggar in a first direction. The second heat treatment furnace may include: a heat treatment unit; and a second conveyor configured to convey the saggar in a second direction opposite to the first direction. Each of the first and second heat treatment furnaces may further include a substitution unit configured to isolate the heat treatment unit from outside of an exit. The substitution unit may include doors constituted of a heat insulating material, and disposed between the heat treatment unit and the substitution unit and between the substitution unit and the exit.

A method including preheating a set of N shell molds for lost-wax casting, where the method can comprise: individually charging shell molds into n unit electric furnaces, each of which has previously been preheated to an initial loading temperature; starting a predefined preheating cycle for each shell mold charged in the unit electric furnaces, with a preheating cycle comprising raising the temperature of the furnace in compliance with a predefined ramp up to a predetermined setpoint temperature, and holding the furnace at the setpoint temperature for a predetermined duration; and at the end of each preheating cycle, unloading the shell mold in question and repeating the two preceding operations for another non-preheated shell mold.

A slag discharge door device for an electric furnace is provided. The device prevents slag from flowing out via a slag discharge port by making a discharge control door body move up and down to and from the upper surface of a supporting body where slag is discharged by flowing to the upper surface, and the discharge of slag is controlled, such that during steel-making work in the electric furnace, the outflow of slag is prevented and heat losses are reduced, the efficiency of arc heat due to the formation of foamed slag is increased, and valuable metals are recovered from the molten slag thereby increasing the percentage of molten steel recovered.

A modular oven includes a plurality of interlockable insulated panels for user assembly into a cubic structure of an oven. The panels include a top panel, a bottom panel, a left panel, a right panel, a back panel, and a front panel. The front panel can be pivotally mounted to the left or right panel and serves as a door for the modular oven. The top panel and the bottom panel are selectively coupled to the left, back, and right panels by mounting pegs. The bottom panel is provided with a heating element on one side and a plurality of casters on the other side to facilitate transporting the oven. A control module is selectively coupled to one of the panels to control operations of the oven. The oven may also be provided with a trolley system to facilitate transport of workpieces to and from the oven.

A heat treatment apparatus includes a furnace body, a door, and a pipe. The furnace body has therein a processing space where the workpiece is heat-treated, and it is provided with an opening. The door closes the opening of the furnace body. A refrigerant flows through the pipe. The door is provided with a seal material in a region that overlaps a peripheral edge of the opening of the furnace body when the door is closed. The pipe is attached around a region in the furnace body against which the seal material is pressed.

Disclosed is a substrate treating apparatus. The substrate treating apparatus includes a process chamber having an opening, a shutter that opens and closes the opening through a rotation thereof, and a shutter driver having a cylinder that opens and closes the shutter, and the shutter driver includes a controller that controls a pneumatic pressure provided to the cylinder such that, when the shutter is rotated from an opening location to a closing location, a rotational speed of the shutter in a first rotation section including the opening location and a rotational speed of the shutter in a second rotation section including the closing location are different.

An injector configured for arrangement within a reactor of a vertical furnace to inject gas in the reactor is provided. The injector is made substantial elongated and configured with an internal gas conduction channel to transport gas from a first end of the injector to a second end of the injector. An outer sidewall of the injector may be tapered towards the second end over at least 10%, preferably 30% and most preferably 50% of the length of the injector to increase tolerances for fitting the injector in the tube.

A substrate processing apparatus includes a bake chamber, a chamber door that opens and closes an opening of the bake chamber, a first support plate in the bake chamber, a first partition wall, which partitions a space provided on the first support plate into first heat treatment spaces spaced apart from each other in a first horizontal direction, and extends in a second horizontal direction and a vertical direction, first heat treatment modules arranged in the first heat treatment spaces, a first exhaust duct extending in the first horizontal direction across the first heat treatment spaces, a first sealing bracket coupled to the first exhaust duct, a first horizontal packing configured to seal a gap between the first sealing bracket and the chamber door, and a first vertical packing configured to seal a gap between the first partition wall and the chamber door.