Research and Analysis of Vacuum Alloy Feeding System
In order to ensure a high operating rate of the device, a double vacuum chamber is required. Each vacuum chamber is placed on its own trolley which can be opened to the standby or process position. The vacuum chamber changer is placed in the standby position exhaust pipe on a pneumatically operated refractories platform. Through the top gun hole standby position burner can deep into the vacuum chamber to the bottom 5000. The purpose of the burner is to heat the vacuum chamber or keep warm in the standby position. In the treatment position the exhaust pipe and the alloy pipe and the top gun are mounted together by a hydraulic or pneumatic compensator. The change of the vacuum chamber from the processing position to the standby position can be performed by the operator in an automatic manner. All processes can be completed within two minutes between two furnace steels.
The vacuum alloy system 8uLc steel process operation according to the requirements of the RH process, the most important is the production of very low carbon content of a deep-drawn steel (IF) Qin and Ni steel and high-silicon electrical steel, carbon less than 0.002%. In order to carry out the decarburization process in RH, the most important thing is to control the starting conditions according to the carbon and oxygen balance. The required carbon and oxygen content can be easily and stably adjusted by TBM steelmaking. Add ferromanganese when tapping. After the tapping, the molten steel is homogenized by a hydrogen blow gun and transported to the RH plant. When the ladle arrives, it is processed immediately.
In general, seven furnaces can be continuously processed. In fact, it is one of the two continuous casting machines. After the start of RH vacuum treatment, the decarbonization reaction of the molten steel begins. The decarburization reaction is controlled by computer-controlled pump-start procedures and automatic lift gas settings. All RH processing time can not exceed 26min. Use of RH vacuum treatment The purpose of secondary metallurgy of the RH plant No. 2 in the Beckerwerth plant in ThyssenKrupp is as follows: (1) Production of low-carbon ULGIF steels; (2) Production of low-hydrogen thick plate steels; (3) Improvements Oxygen-producing alloy yield (such as Ti); (4) Production of high-carbon steel; (5) Homogenization and control of accurate ingredients, even large alloy additions (such as the production of electrical steel).
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