Abstract: A multi-chamber heat treatment device according to the present disclosure in which heating chambers are disposed with an intermediate transport chamber interposed therebetween in a top view, and a treatment object is stored in a heating chamber via the intermediate transport chamber, wherein the multi-chamber heat treatment device includes a gas cooling chamber which cools the treatment object using a cooling gas; and a cooling gas circulation device which includes an gas inlet and a gas outlet.

Abstract: A heat treatment device includes: a heating device that heats a treatment object; a cooling device including a cooling room that accommodates the treatment object heated by the heating device and into which a cooling medium used for cooling the treatment object is supplied; a pressurized gas supplier that supplies pressurized gas into the cooling room; a pressure relief valve that communicates internal and external areas of the cooling room with each other when the pressure relief valve is opened; a pressure sensor that measures the pressure inside the cooling room; and a controller that controls the pressure relief valve such that the pressure relief valve is opened when a measurement result of the pressure sensor is higher than or equal to a threshold value.

Abstract: A cooling device configured to cool an article to be processed by spraying a coolant includes a cooling chamber configured to accommodate the article to be processed, a header pipe having a connecting pipe protruding from a main body section to which a nozzle is attached and into which the coolant supplied into the main body section is supplied, and disposed in the cooling chamber, and an attachment section formed at the cooling chamber and into which the connecting pipe is inserted from an inside of the cooling chamber to an outside of the cooling chamber.

Abstract: A conveyance device for a heat treatment device presses a conveyed body to convey the conveyed body in a linear direction, and includes a cylinder mechanisms having a retractable rod that presses the conveyed body, in which: an abutting member is disposed at a tip part of the rod of the cylinder mechanism so that the abutting member abuts locations, which are different from each other in a circumferential direction, on an outer peripheral surface of the conveyed body; a guide rail configured to guide the abutting member is provided; and the abutting member is provided with a traveling roller that travels on the guide rail.

Abstract: A multi-chamber heat treatment device according to the present disclosure in which heating chambers are disposed with an intermediate transport chamber interposed therebetween in a top view, and a treatment object is stored in a heating chamber via the intermediate transport chamber, wherein the multi-chamber heat treatment device includes a gas cooling chamber which cools the treatment object using a cooling gas; and a cooling gas circulation device which includes an gas inlet and a gas outlet.

Abstract: A heat treatment device includes: a heating device that heats a treatment object; a cooling device including a cooling room that accommodates the treatment object heated by the heating device and into which a cooling medium used for cooling the treatment object is supplied; a pressurized gas supplier that supplies pressurized gas into the cooling room; a pressure relief valve that communicates internal and external areas of the cooling room with each other when the pressure relief valve is opened; a pressure sensor that measures the pressure inside the cooling room; and a controller that controls the pressure relief valve such that the pressure relief valve is opened when a measurement result of the pressure sensor is higher than or equal to a threshold value.

Abstract: A cooling apparatus includes: cooling nozzles which are disposed around an object to be treated accommodated inside a cooling room and spray a cooling medium onto the object to be treated; a header pipe communicating with the cooling nozzles; and a cooling pump which supplies the cooling medium to the header pipe. The cooling nozzles are divided into groups. The header pipe is provided in each of the groups of the cooling nozzles.

Abstract: A cooling device configured to cool an article to be processed by spraying a coolant includes a cooling chamber configured to accommodate the article to be processed, a header pipe having a connecting pipe protruding from a main body section to which a nozzle is attached and into which the coolant supplied into the main body section is supplied, and disposed in the cooling chamber, and an attachment section formed at the cooling chamber and into which the connecting pipe is inserted from an inside of the cooling chamber to an outside of the cooling chamber.

Abstract: A heat treatment apparatus includes: a heat treatment chamber that performs heating treatment for a treatment object thereinside; and a thermal insulator disposed inside the heat treatment chamber and surrounding a receiving area for the treatment object. The heat treatment chamber includes a side wall portion and a lid portion configured to be attachable to and detachable from the side wall portion. The thermal insulator includes a ceiling disposed on the inside of the lid portion. The ceiling includes a thermal insulator lid that is at least part of the ceiling and is united to the lid portion.

Abstract: A heat treatment device includes: a heating chamber inside which a treatment object is contained; a lower heater that heats the lower section of a receiving area that is an area inside the heating chamber in which the treatment object is contained; and an upper heater that heats the upper section of the receiving area.

Abstract: A cooling device configured to cool an article to be treated by immersing the article to be treated in coolant includes a cooling chamber configured to accommodate the article to be treated and store the coolant therein, a supply nozzle configured to supply the coolant into the cooling chamber from below the article to be treated, a recovery pipeline configured to collect the coolant stored in the cooling chamber from above the article to be treated, and a pump configured to pump the coolant collected by the recovery pipeline to the supply nozzle.

Abstract: A conveyance device for a heat treatment device presses a conveyed body to convey the conveyed body in a linear direction, and includes a cylinder mechanisms having a retractable rod that presses the conveyed body, in which: an abutting member is disposed at a tip part of the rod of the cylinder mechanism so that the abutting member abuts locations, which are different from each other in a circumferential direction, on an outer peripheral surface of the conveyed body; a guide rail configured to guide the abutting member is provided; and the abutting member is provided with a traveling roller that travels on the guide rail.

Abstract: A heat treatment apparatus includes a cooling chamber configured to perform cooling of a treatment object, a conveyance chamber installed above the cooling chamber and configured to convey the treatment object, a lift table on which the treatment object is placed, and a lift mechanism having a driving apparatus installed above the lift table and configured to raise and lower the lift table between the cooling chamber and the conveyance chamber using the driving apparatus.

Abstract: A heat treatment device which performs vacuum carburizing treatment by heating a workpiece is presented. The heat treatment device includes: a heater chamber in which a heater is provided; a heat treatment chamber in which the workpiece is heated and vacuum carburizing treatment is performed on the workpiece and is disposed so as to be adjacent to the heater chamber in the heat treatment device; and a muffle plate which partitions a portion between the heater chamber and the heat treatment chamber. A gas introduction portion through which burnout gas is introduced is independently provided in each of the heater chamber and the heat treatment chamber.