A foundry-forging module allowing one to obtain a deformed profile of a specified cross section from molten metal in a continuous mode is developed and fabricated. The data of metallography investigations of continuously cast deformed blanks (CCDB) from technical copper and their comparison with structures of cast test samples are given. The results of estimation of the dimensional geometric accuracy of the CCDB samples are presented.Keywords: continuously cast, deformed billets, foundry-forging module To obtain continuously cast deformed blanks (CCDB) made from nonferrous metals, we propose the technology and a corresponding set of equipment developed at the Institute of Engineering Science and Metallurgy, Far East Division, Russian Academy of Sciences (Komsomolsk-on-Amur) [1], Their essence lies in combination of three simultaneous processes: continuous cast, liquid stamping, and hot pressure treatment of metals in one facility. The system involves a cast aggregate, a pouring-dosing facility, and a foundry-forging module (FFM) with a controlled driving gear. Two constructive variants of FFM are possible, namely, with vertical or horizontal arrangement of a crystallizer and, correspondingly, with a vertical or a two-side horizontal direction of the output of the CCDB. Figure 1 shows the layout of the FFM facility with the horizontal arrangement of the crystallizer (FFMG). Preliminarily, prior to pouring the melt into the crystallizer, seeds from a plastic material are placed in its calibrating parts that form the transverse section of the CCDB. They are necessary to provide insularity of the internal cavity of the crystallizer. The latter is heated to the temperature distribution required by the operating regimes. Then molten metal is supplied from the pouring-dosing facility through a heat-resistant pouring nozzle mounted in the windows of wall 4 of the frame and upper wall 5. After filling the crystallizer with the melt, the driving gear of the FFMG is switched on, and the required number of rotations of eccentric driving shafts 3 is established. Then their rotation frequency is adjusted with the melt consumption from the pouring-dosing facility. During rotation of shafts 3, sidewalls of the crystallizer carry out complex motion in the horizontal plane toward each other. This motion is determined by the value of eccentricity, orientation of the eccentrics relative to each
In order to obtain high-quality metal products with the desired properties (process stability) using the combined methods of metal casting and deformation, it is necessary to take into account the specific parameters of this process and the fact that the metal in the crystallizer stays simultaneously in several physical states: liquid, liquid-solid, solid-liquid and solid. Structurally, the mold consists of four walls moving relative each other along a given sophisticated trajectory. The object of the research is the production technology from non-ferrous alloys using the combined method of continuous casting and metal pressure treatment. The thermal processes occurring in the mold of a continuous horizontal metal casting and deformation installation (CHMCDI) during the formation of metal products have been examined as a research subject. The methods of physical modeling of the thermal processes which take place in the system “crystallizing metal-tool deformation” under different conditions of the mold cooling (using closed-perforated tubes and straight-flow tubes) have been used. Subsequent data processing of the full factorial experiment using the least square method as well as solving the optimization problem by using the Pareto principle of optimality made it possible to determine the optimal parameters for the process of obtaining metal products from aluminum alloys (TV = 40 oС; рv = 0.7 kg / cm2; SR = 5.8), which have been confirmed by the results of the experimental test on obtaining the strip from technical aluminum AD0 strip with a cross section of 40–12 mm.
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