Technological features of a combined process of obtaining continuously cast deformed blanks made from nonferrous metals

Chernomas, V. V.

doi:10.3103/s1067821207060107

Cited by 2 publications

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“…Such a movement contributes to the mechanical compression of the cooling metal by the working plates of the constituent parts of the CHMCDI mold and to the advancement of metal into the calibration zone. It is in the calibration zone of the mold that the final deformation of the metal occurs and it is given the desired cross-sectional profile, the alloy being in the crystallizer simultaneously in the liquid, liquid-solid, solid-liquid and solid states [8,9]. The main criteria to be met by the combined process of obtaining metal products using CHMCDI were determined in work [10].…”

Section: Introductionmentioning

confidence: 99%

Optimization of Technological Parameters of the Process for Obtaining a Strip by the Combined Method of Metal Casting and Deformation

Chernomas

Khimukhin

Khimukhina

2020

MSF

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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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Section: Introductionmentioning

confidence: 99%

Optimization of Technological Parameters of the Process for Obtaining a Strip by the Combined Method of Metal Casting and Deformation

Chernomas

Khimukhin

Khimukhina

2020

MSF

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Research for the Process of Forming the Metal during its Cyclic Deformation

Chernomas

Maryin

2023

MSF

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Use the devices for the implementation of the combined casting process and deformation of non-ferrous alloys is a relatively new direction in the technology of materials processing by pressure. For an adequate description of the shaping processes implemented in such devices on the basis of certain mathematical models, experimental data on the energy-force parameters of deformation are required, as well as data for the nature of the distribution and intensity of deformations arising in the process during cyclic deformation of a metal product. The cyclical nature of the process of forming a metal product, coupled with large plastic deformations, does not allow directly using the traditional methods of experimental research of its stress-strain state adopted in the theory of metalworking by pressure. This gap is partly intended to fill by this study. The paper proposes a complex technique based on the registration (according to the electrical characteristics of the drive motor) of the instantaneous power of irreversible deformation for the material of a metal product. Prone to strain hardening in a cold state, a method for directly establishing the components of plastic deformation of the workpiece based on the method of rolled dividing grids with subsequent calculations according to Siebel's method. Analysis of the experimental results allows us to establish a qualitative picture of the deformation mechanism. The obtained experimental values are necessary for the verification of mathematical models and software systems for calculating the stress-strain state of materials under complex loading and finite deformations.

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Technological features of a combined process of obtaining continuously cast deformed blanks made from nonferrous metals

Cited by 2 publications

References 0 publications

Optimization of Technological Parameters of the Process for Obtaining a Strip by the Combined Method of Metal Casting and Deformation

Optimization of Technological Parameters of the Process for Obtaining a Strip by the Combined Method of Metal Casting and Deformation

Research for the Process of Forming the Metal during its Cyclic Deformation

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