Development, modeling and research of technology for producing longish deformed semi-finished products from aluminum-magnesium alloys with low scandium contents

Abstract

The paper provides the results of studying the technology for producing longish deformed semi-finished products by sheet rolling and direct rolling-extruding of aluminum-magnesium alloys with different scandium contents. Computer and physical modeling methods were used for the research and the results were verified by pilot tests. These alloys were selected for the research due to the fact that Al–Mg aluminum alloys doped with scandium have increased corrosion resistance along with their high strength. In this regard, this research was aimed to obtain longish deformed semi-finished products in the form of sheet metal, rods and welding wire from economically alloyed Al–Mg alloys. Computer simulation was performed using the DEFORM-3D software package to determine rational conditions of hot rolling of large-sized ingots and deformation modes of the combined processing using the method of direct rolling-extruding of rods made of the investigated alloys. At the same time, the technological and force parameters of these processes were justified with the laws of their change presented. Experimental results obtained made it possible to determine the limit values of force parameters and to study the structure and properties of deformed, annealed and welded semi-finished products made of the investigated alloys during the physical modeling of processes studied. In addition, metal properties were determined in a fairly wide range of changes in temperature, speed, and deformation parameters. Based on the results of experimental studies and modeling, recommendations were given for the industrial development of the technology for hot rolling of thick ingots from the investigated alloys. At the same time, technological solutions, regulations and conditions for deformed semi-finished products made of the investigated alloys were developed and batches of sheet metal with the required level of mechanical and corrosion properties were obtained.

Application of CAD in Semifinished Product Packaging Art Design

“…In actual production, you can cut a certain size of corrugated board with a paper cutter and then weigh it. Generally, before production, the theoretical quantity of corrugated board can be estimated according to the raw materials used, that is, G � 􏽘 g 1 + 􏽘 g m c + 􏽘 g j + 􏽘 g a , (6) where G is the quantity of corrugated board in g/m 2 , g 1 , g m , g j , g a are the consumption of a box of board paper, corrugated base paper, laminated paper, and adhesive in g/ m 2 , and Y is the corrugated coefficient. By comparing the theoretical quantitative results with the actual measured results, we can analyze the problems existing in the quality and shape of base paper [27].…”

“…According to Yu and Sinigh, the output value of corrugated paper industry in China has also surpassed that of the packaging industry in the world since 2003. Sidelnikov and others found that, in addition to the increasing share of paper packaging in various packaging materials, paper packaging is also developing in the direction of high quality, high strength, lightweight, and versatility, which have also become an important reason for the rapid and stable development of paper packaging industry in the packaging field [6]. With the rapid and stable development of the paper packaging industry, Deja and others have also been widely used in all walks of life in order to meet the needs of multi-Wu chemical industrial design outside China and fully meet the market development needs of small batch, personalization, interest, diversification, and short cycle, it has become a key technology to improve the product R&D capability and enhance competitiveness of various enterprises [7].…”

Simulation of Process Rolling Plates from Alloy of Al-Mg System Economically Doped with Scandium

“…The simulation results showed that during hot rolling of large-sized ingots, a change in the geometry of the roll is observed (Fig. 2), and a more intense deformation of the surface layers is realized as compared to the central ones, which leads to different velocities of the outflow of metal layers and the appearance of tensile stresses [4]. Simulation of the cold rolling process (Fig.…”

“…Engineering products, especially aircraft and shipbuilding, widely use structural products made by machining aluminum alloy plates obtained by hot and cold sheet rolling [1][2][3][4][5][6]. One of the important tasks is to develop rolling modes that exclude the formation of various defects that arise due to the temperature heating of the metal during its deformation and the action of tensile stresses in the surface and intermediate zones along the thickness of the rolled product.…”

“…The simulation of the hot rolling process of plates made of aluminum alloy of the Al-Mg system doped with scandium in the range of 0.10-0.12% using the DEFORM-3D package is necessary for the design of technological processes for hot rolling in industrial conditions and preparation of recommendations on processing modes. Based on the simulation results, changes in the geometry of the roll were analyzed, temperature conditions and the stress-strain state of the metal were studied [4].…”