Structure and mechanical properties of aluminum alloys produced by a new method of simultaneous continuous casting and metal deformation in solid-liquid state

2020 ◽  
pp. 75-82
Author(s):  
A.M. Sergeeva ◽  
◽  
N.S. Lovizin ◽  
A.A. Sosnin ◽  
◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Aluminum Alloys ◽  
Continuous Casting ◽  
Liquid State ◽  
New Method ◽  
Metal Deformation ◽  
Solid Liquid

scholarly journals CORRELATION BETWEEN MECHANICAL PROPERTIES OF SELECTED 7XXX SERIES ALUMINUM ALLOYS OBTAINED BY SEMI-CONTINUOUS CASTING

2016 ◽  
Vol 42 (1) ◽  
pp. 69
Author(s):  
Zofia Kwak ◽  
Aldona Garbacz-Klempka ◽  
Małgorzata Perek-Nowak ◽  
Łukasz Szymański
Keyword(s):  
Mechanical Properties ◽  
Aluminum Alloys ◽  
Continuous Casting

scholarly journals Rheological characteristics of steel in continuous roll casting-rolling

2021 ◽  
Vol 5 (3) ◽  
Author(s):  
O.V. Kholiavik ◽  
Alexey Nogovitsyn ◽  
Alexey Kravchuk ◽  
Alexey Samoylenko ◽  
Ruslan Boris
Keyword(s):  
Mathematical Modeling ◽  
Continuous Casting ◽  
Rheological Properties ◽  
Liquid State ◽  
Thin Sheet ◽  
Efficient Technology ◽  
Research Results ◽  
Roll Casting ◽  
Liquid States ◽  
Solid Liquid

Problems. In the process of obtaining a strip in a casting and rolling device, the question arises of combining the process of hot rolling of the solidified material and the process of crystallization of the liquid melt. This makes it possible to implement an efficient technology for producing thin-sheet products. Purpose of the study. Determination of rational parameters for performing mathematical modeling of material behavior during roll casting requires clearly defined recommendations. The material for the rolling process is steel. The starting material was used in solid, solid-liquid and liquid states. Implementation technique. The analysis of the properties of steel was carried out on the basis of the results of experiments obtained at the Physico-Technological Institute of Metals and Alloys of the National Academy of Sciences of Ukraine. To analyze the rheological properties of steel, the dependences of the yield stress for alloyed and carbon steels were used in a certain temperature range. The selected temperature range includes solidus and solid-liquid state of steel, located above 0.8 melting point. Research results. Based on the research results, the analysis of the rheological properties of steel in solid, solid-liquid and liquid states during continuous casting-rolling on rolls was carried out. The use of the obtained dependencies makes it possible to perform mathematical modeling of the deformation and hydrodynamics of the material during continuous casting-rolling of steel strips using roll casting-rolling devices. Conclusions. The constructed dependences, together with studies of the viscosity of steel in the liquid state and the resistance of steel to deformation in the solid state, most fully describe the rheological properties of steels during casting-deformation processes. The obtained dependences will make it possible to implement an ultra-efficient technology for producing thin-sheet rolled products.

scholarly journals Physical Modeling of Semi-continuous Casting for Developing an Industrial Technology of Producing Ingots From New Deformable Aluminum Alloys

2021 ◽  
Author(s):  
Aleksandr Innokentyevich Bezrukikh ◽  
Vladimir Nikolaevich Baranov ◽  
Igor Lazarevich Konstantinov ◽  
Pavel Olegovich Yuryev ◽  
Denis Sergeevich Voroshilov ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Aluminum Alloys ◽  
Continuous Casting ◽  
High Surface ◽  
Casting Machine ◽  
Induction Melting ◽  
Monitoring And Control ◽  
High Surface Quality ◽  
Path System ◽  
Hot And Cold Rolling

Abstract A physical model of a semi-continuous casting unit (SCCU) has been manufactured and tested, designed to develop a technology for casting flat and cylindrical ingots from experimental aluminum alloys for subsequent metal forming. The SCCU includes two induction melting furnaces with a tilting mechanism, a rotary mixer, a metal path system, a vertical casting machine, a jib crane, water supply, power supply, monitoring and control systems. SCCU testing was carried out on six heats of alloy 1580 of the Al-Mg system with the addition of scandium. In the first three ingots the scandium content was 0.05% (wt.). In the second series of three heats ingots with 0.075% (wt.) scandium were cast. The ingots had a high surface quality, did not have casting defects, and there were no inclusions of primary intermetallic compounds Al3(Sc, Zr) in the structure of the ingots. The bottom and runner parts of the ingots were cut off, all faces were milled and subjected to homogenization annealing in a two-stage mode: the first heating at 350 °C, 3 h, the second heating for 1 h to 425 °C, 4 h. Then the billets were hot rolled from 40 to 5 mm, annealed at 380 °C, 1 h, rolled at room temperature to a thickness of 1 mm and annealed at 350 °C, 3 h. After that, tensile mechanical properties were tested. The results of modeling ingot casting were tested in industrial conditions when casting a large ingot with a cross section of 2100×500 mm. A template was cut from the ingot with the dimensions of a billet for rolling, as that obtained from an experimental ingot cast at the SCCU. The billet was subjected to hot and cold rolling according to the conditions used for rolling the experimental ingot. At the same time the modes of heat treatment of sheet semi-finished products were also repeated. The mechanical properties of sheets of alloy 1580 rolled from experimental and industrial ingots practically did not differ. This proves the reliability of casting modes for ingots obtained at the SCCU and tested for casting industrial ingots.

Research Advance in Harmful Effects and Removal of Impurity Fe from Al and Al Alloys

2011 ◽  
Vol 295-297 ◽  
pp. 751-759 ◽  
Author(s):  
Hua Shen ◽  
Wei Dong Yang ◽  
He Liang ◽  
Guang Chun Yao
Keyword(s):  
Mechanical Properties ◽  
Aluminum Alloys ◽  
Pure Aluminum ◽  
Al Alloys ◽  
Precipitation Method ◽  
Filtration Method ◽  
Purification Methods ◽  
Research Advance ◽  
Harmful Effects

The presence of Fe and harmful effects on mechanical properties of pure aluminum and aluminum alloys are introduced. Several purification methods are reviewed, but all of them are of definite limitations. It is effective that precipitation method, filtration method and centrifugal division method are integrated.

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