Abstract: A metal melting and retention furnace is provided, wherein a tubular member in a furnace chamber, a table-like melting part is formed directly below the tubular member and a melting burner is arranged in the furnace chamber, a molten metal retention part in which the melting material which has been melted is introduced and which is provided with a retention burner for heating the introduced molten metal is formed around the outer circumference of the table-like melting part, and the molten metal in the molten metal retention part flows to a molten metal ladle part adjacent to the furnace chamber.

Abstract: A metal melting furnace which effectively melts a melting material and holds the temperature of the molten material to reduce fuel. The metal melting furnace has a material charging port and a flue at its top and a melting chamber with a heating plate which melts a melting material charged from the material charging port at its bottom. A heating burner is disposed at a bottom side of the heating plate of the melting chamber and is used to melt the melting material on the heating plate. Exhaust gas of the heating burner, which circulates through the exhaust gas channel, is used to preheat the melting material of the flue. At a bottom side of the heating burner of the melting chamber, a molten material holding section into which molten material flows to be stored is formed. The heating burner holds the temperature of the molten material.

Abstract: A metal melting furnace which can more effectively melt the melting material and hold the temperature of the molten material so as reduce the fuel economy compared with the past, that is, a metal melting furnace which has a material charging port and a flue at its top and is provided with a melting chamber which is provided with a heating plate which melts a melting material which is charged from the material charging port at its bottom, wherein a heating burner is disposed at a bottom side of the heating plate of the melting chamber, the heating burner is used to melt the melting material on the heating plate, and exhaust gas of the heating burner which circulates through the exhaust gas channel is used to preheat the melting material of the flue and in that at a bottom side of the heating burner of the melting chamber, a molten material holding section to which molten material which was melted on the heating plate flows down into to be stored is formed, and the heating burner is used to hold the temperature

Abstract: There is provided a novel construction of a metal melting furnace that can preheat and melt the entire material more efficiently and that can facilitate operations for removing oxides deposited on the surface around the melting burner and the inside thereof and thus reduce the time for cleaning the inside of the furnace. The metal melting furnace 10 includes a melting chamber 20 that has a material charging port 21 and a flue 22 at the top and a hearth section 25 along which melted material flows down to a molten material holding section 60 at the bottom, wherein a combustion chamber 30 equipped with a melting burner 35 is formed below the hearth section 25, a heating plate 40 comprised of a heat-resistant plate having high heat conductivity is disposed in the hearth section 25 above the combustion chamber 30, and an exhaust gas outflow passage 50 from the combustion chamber 30 is formed in a side wall of the melting chamber 20.

Abstract: In a metal melting furnace, a separation wall 60 is provided between an inclined hearth 30 and a molten metal reservoir 35 to define a molten metal processing portion 65. The separation wall is provided with a connecting passage 61 for the molten metal, between the molten metal reservoir and the molten metal processing portion, at a height level higher than a bottom surface 67 of the molten metal processing portion. The separation wall is also provided on its upper portion with an exhaust gas passage which permits exhaust gas discharged from the molten metal reservoir to pass therethrough. An inspection opening 31 with a door 32 is provided in a furnace wall surface 37W to open into the molten metal processing portion.

Abstract: There is provided a novel construction of a metal melting furnace that can preheat and melt the entire material more efficiently and that can facilitate operations for removing oxides deposited on the surface around the melting burner and the inside thereof and thus reduce the time for cleaning the inside of the furnace. The metal melting furnace 10 includes a melting chamber 20 that has a material charging port 21 and a flue 22 at the top and a hearth section 25 along which melted material flows down to a molten material holding section 60 at the bottom, wherein a combustion chamber 30 equipped with a melting burner 35 is formed below the hearth section 25, a heating plate 40 comprised of a heat-resistant plate having high heat conductivity is disposed in the hearth section 25 above the combustion chamber 30, and an exhaust gas outflow passage 50 from the combustion chamber 30 is formed in a side wall of the melting chamber 20.

Abstract: In a metal melting furnace, a separation wall 60 is provided between an inclined hearth 30 and a molten metal reservoir 35 to define a molten metal processing portion 65. The separation wall is provided with a connecting passage 61 for the molten metal, between the molten metal reservoir and the molten metal processing portion, at a height level higher than a bottom surface 67 of the molten metal processing portion. The separation wall is also provided on its upper portion with an exhaust gas passage which permits exhaust gas discharged from the molten metal reservoir to pass therethrough. An inspection opening 31 with a door 32 is provided in a furnace wall surface 37W to open into the molten metal processing portion.

Abstract: A dipping and pouring apparatus includes a molten metal holder which received a molten metal, a duct which is provided at the bottom of the molten metal holder and which opens into the air, and a valve member provided in the duct. The valve member is provided with a main axial passage opening into the air and at least one branch passage connected to the main passage. The valve member selectively connects the interior of the molten metal holder to the axial main passage.

Abstract: An apparatus for measuring a temperature of molten metal includes a temperature measuring member which has a thermocouple covered wtih a protecting insulator, and a refractory molten metal cup in which molten metal to be measured is poured and which has a pipe portion in which the temperature measuring member can be repeatably detachably inserted.

Abstract: A continuous melting furnace in which a metal is melted, so that the melted metal is held to maintain the temperature of the melted metal and is ladled to a mold, comprising a melting tower chamber for receiving metal to be melted and for melting such metal, an inclined floor chamber connected to the melting tower chamber, a holding chamber connected to the inclined floor chamber, a gas treatment chamber connected to the holding chamber and having a bubbling device for ejecting an inert gas into the melted metal and a ladling chamber connected to the gas treatment chamber and which is bounded to the holding chamber through a thermally insulative separation wall from which the melted metal is ladled into a mold.