Metal melting furnace with degassing device
A melting furnace and gas device technology, applied in furnaces, charge materials, crucible furnaces, etc., can solve problems such as accidents, high temperature damage of exhaust pipes, inability to carry out subsequent smelting operations, etc., and achieve the effect of preventing damage and preventing entry into pipelines.
Active Publication Date: 2018-02-06
南通高新工业炉有限公司
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Problems solved by technology
[0004] 1. Use inert gas for stirring and degassing, and use inert gas as the medium in the process, which will generate a fee for using inert gas;
[0005] Second, the shape of the degasser is large, and the degasser must be pushed to the designated position for each degassing. After the degassing is completed, the machine must be pushed away, otherwise the subsequent operations of smelting cannot be carried out.
[0008] Second, the flux is degassed chemically. During the whole process, it is inevitable that some slag inclusions and other components will remain in the aluminum alloy melt. Often the degassing will be achieved, but other impurities will enter the molten aluminum. Gone, causing side effects of degassing operations, affecting the quality of aluminum alloy castings produced
[0009] Three, when the chemical flux is added to the aluminum alloy melt, it must be completely immersed in the aluminum alloy melt, so the flux must be completely dry, if the flux is not completely dried before being put into the aluminum alloy melt, it will As a result, the molten aluminum alloy is blown to the outside of the furnace by the water vapor that suddenly expands in volume, causing serious accidents. Therefore, this operation has great potential safety hazards.
[0011] In addition, by connecting the exhaust pipe on the side of the furnace body, due to the high temperature in the furnace body, it is very easy to cause high temperature damage to the exhaust pipe, and the subsequent evaporated metal aluminum vapor is thrown into the exhaust pipe, causing unnecessary blockage
Method used
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Embodiment Construction
[0025] see Figure 1-4 , a metal melting furnace with a degassing device of the present invention, which includes a furnace 1 and a furnace cover 2, and the furnace body 1 includes an outermost shell 11, a refractory brick layer 13 located in the shell and an innermost crucible 14 , there is a fiber insulation layer 12 between the shell 11 and the refractory brick layer 13, and a heating element is arranged in the refractory brick layer 13; the opening of the furnace body 1 has a first step portion, a second step part and the third step part, each step part respectively includes a horizontal part (W1-W3) and a vertical part (T1-T3), and the horizontal part W2 of the second step part has a plurality of inert gas input holes 17, There are a plurality of degassing holes 15 in the horizontal part W3 of the third step part;
[0026] The furnace cover 2 includes a thermal insulation layer 21, a stretchable first sealing layer 22, a second sealing layer 23 and a thermal insulation l...
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The invention provides a metal melting furnace with a degassing device. The metal melting furnace is provided with a cylindrical furnace body structure, and the furnace body comprises a shell at the outermost side, a refractory brick layer positioned in the shell and a crucible at the innermost side; a vacuum isolation cavity is formed between the shell and the refractory brick layer, a pluralityof protrusions are arranged on the inner surface of the refractory brick layer, and the plurality of protrusions are in close contact with the crucible; and a first electric heating element is arranged in the refractory brick layer, the first electric heating element is a spiral electric heating wire, each of the plurality of protrusions is provided with an independent second electric heating element, the second electric heating element and a control circuit of the first electric heating element are independent from each other.
Description
technical field [0001] The invention relates to the field of processing metal alloy raw materials, in particular to a metal melting furnace with a degassing device. Background technique [0002] In the process of smelting molten metal in the existing ordinary resistance melting furnace, the air dissolved in the molten metal is degassed in two ways: [0003] 1. Stirring and degassing machine uses graphite rotor to stir compressed inert gas inside the melt for stirring and degassing. It has the following two shortcomings: [0004] 1. Use inert gas for stirring and degassing, and use inert gas as the medium in the process, which will generate a fee for using inert gas; [0005] Second, the shape of the degasser is large, and the degasser must be pushed to the designated position for each degassing, and the machine must be pushed away after the degassing is completed, otherwise the subsequent smelting operations cannot be carried out. Since the degassing operation process is ...
Claims
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Patent Timeline
Login to View More IPC IPC(8): F27B14/04F27B14/08F27B14/12
CPCF27B14/04F27B14/08F27B14/12F27B2014/0843F27M2003/13
Inventor王如卿
Owner南通高新工业炉有限公司