Abstract: There are provided a method for heat treatment, a heat treatment apparatus, and a heat treatment system capable of efficiently controlling heat treatment such as a bright treatment with high precision and without causing oxidation and decarbonization. Computation of ?G0 (standard formation Gibbs energy) is performed by referring to sensor information from respective sensors, and an Ellingham diagram, a control range, and a status of the heat treatment furnace in operation expressed with ?G0 are displayed on a display device 531, while a flow rate of hydrocarbon gas is controlled by a control unit 534 so that ?G0 is within the control range.

Abstract: Provided are: a method for brazing an aluminum alloy, which is characterized in that brazing is carried out by heating an aluminum brazing sheet without using flux in a furnace that is in an argon gas-containing atmosphere, said aluminum brazing sheet comprising a core material that is composed of aluminum or an aluminum alloy and a brazing filler material that is composed of an aluminum alloy and clad on one surface or both surfaces of the core material, and said core material and/or said brazing filler material containing Mg; and a brazing apparatus which is used in the method for brazing an aluminum alloy. The brazing method has good and stable brazing properties and is applicable in industrial practice.

Abstract: There are provided a method for heat treatment, a heat treatment apparatus, and a heat treatment system capable of efficiently controlling heat treatment such as a bright treatment with high precision and without causing oxidation and decarbonization. Computation of ?G0 (standard formation Gibbs energy) is performed by referring to sensor information from respective sensors, and an Ellingham diagram, a control range, and a status of the heat treatment furnace in operation expressed with ?G0 are displayed on a display device 531, while a flow rate of hydrocarbon gas is controlled by a control unit 534 so that ?G0 is within the control range.

Abstract: Provided are: a method for brazing an aluminum alloy, which is characterized in that brazing is carried out by heating an aluminum brazing sheet without using flux in a furnace that is in an argon gas-containing atmosphere, said aluminum brazing sheet comprising a core material that is composed of aluminum or an aluminum alloy and a brazing filler material that is composed of an aluminum alloy and clad on one surface or both surfaces of the core material, and said core material and/or said brazing filler material containing Mg; and a brazing apparatus which is used in the method for brazing an aluminum alloy. The brazing method has good and stable brazing properties and is applicable in industrial practice.

Abstract: This present invention provides a heating system utilizing microwave energy for an improved manufacture of high quality fibers such as carbon fiber and graphitic fiber while simultaneously simplifying construction and meeting a demand for saving electric energy.