scholarly journals Development of an Innovative and Quality-Focused Production Technology for Magnesium Wire

2018 ◽  
Vol 918 ◽  
pp. 34-39
Author(s):  
Marie Moses ◽  
Claudia Kawalla ◽  
Rudolf Kawalla ◽  
Michael Höck
Keyword(s):  
Production Technology ◽  
Automotive Industry ◽  
Customer Requirements ◽  
Quality Improvements ◽  
Quality Properties ◽  
Casting Technology ◽  
Roll Casting ◽  
Application Fields ◽  
Twin Roll ◽  
Rolling Technology

In order to meet customer requirements, technology developments need to stay focused at process rationalization and quality improvements. Combining the twin-roll casting technology and caliber rolling technology for magnesium wire, customer demands concerning cost-efficiency and high quality can be satisfied. The resulting long products can be applied in the automotive industry and aircraft sector as joining and welding elements or in biomedicine as screws. For this purpose, the paper analyzes potential application fields and their induced quality properties. Special requirements of illustrative magnesium long products are shown by adapting existing requirements of aluminum wire. Finally, the innovative magnesium wire production technology will be explained and the advantages, in particular the resource efficiency, of the developed technology will be discussed.

scholarly journals Examination of Mechanical and Electrical Properties and Structure of Selected Aluminum Alloy Sheets Produced from TRC Semi-Products

2017 ◽  
Vol 62 (4) ◽  
pp. 2237-2245
Author(s):  
W. Ścięźor ◽  
G. Kiesiewicz ◽  
R. Kowal ◽  
K. Franczak ◽  
J. Grzebinoga ◽  
...  
Keyword(s):  
Electrical Properties ◽  
Casting Technology ◽  
Post Process ◽  
Mechanical And Electrical Properties ◽  
Ferrous Metals ◽  
Roll Casting ◽  
Single Process ◽  
Modern Manufacturing ◽  
Cold Rolled ◽  
Twin Roll

AbstractModern manufacturing methods of non-ferrous metals, especially aluminum and its alloys, are more and more often based on integrated technologies combining multiple operations in a single process. One of the most popular methods for producing flat components by cold working is twin roll casting technology (TRC). It allows to eliminate from manufacturing the extremely expensive hot rolling operation, as the TRC semi-product (strip) can be directly cold rolled. The results of mechanical and electrical properties and structure examination of strips after casting were presented in the paper. The effect of cold rolling parameters on post-process mechanical properties and structure of sheets was investigated too.

Investigation of the Applicability of the Thermo Photo Analysing Method in Die Casting Technology

2010 ◽  
Vol 659 ◽  
pp. 523-528
Author(s):  
Monika Tokár ◽  
Levente Tóth ◽  
Tamás Rick ◽  
Tamás Mende
Keyword(s):  
Temperature Distribution ◽  
Automotive Industry ◽  
Cycle Time ◽  
Analytical Method ◽  
Die Casting ◽  
Customer Requirements ◽  
Casting Technology ◽  
Die Surface ◽  
Pressure Die Casting ◽  
Real Temperature

As customer requirements are continuously growing in connection with up-to-date castings, it is essential for firms interested in the international market to use modern fittings and instruments, which serve for high quality controls, even for manufacture control within each manufacturing process. For example, the thermo camera is such a measuring instrument we can use for measuring the thermo loss of the furnace, concluding to the inadequately insulating parts, or can even make the thermo profile of the surface of the die. In our work, we were analysing the temperature distribution of the die surface by using a thermo camera, during the manufacture of aluminium casting of automotive industry made by high pressure die casting technology. In pressure die casting, spraying the surface of the casting die with detaching material is a really important technological step, and spraying time – as a part of cycle time influencing productivity – is a very significant parameter. The main functions of spraying include cooling the hot surfaces of die halves, lubrication of the moving parts and helping the ejection of the casting. During our analyses we changed the spraying time of the die, and we took temperature distribution photographs of the stationary die plate by a thermo camera. The only function of the analytical method using a thermo camera is to make the differences in temperature, caused by the changes of the spraying time in the die, comparable in a moment in time. The temperatures taken by us are exact, real temperature values of the die, but these are strongly time-dependent and refer to a certain period of cycle time. It makes possible to compare the temperatures of the die surface in different places in a certain moment in time. We elaborated an analytical method, by which it can be decided if the analysis of the thermo photos is a suitable method for examining the effect – on the casting structure – of spraying time of the die.

scholarly journals Challenges and Solutions in the Development of Magnesium Sheet for Sustainable Vehicle Concepts

2015 ◽  
Vol 828-829 ◽  
pp. 15-22 ◽  
Author(s):  
Karl Ulrich Kainer ◽  
Roland Hoppe ◽  
Jan Bohlen ◽  
Gerrit Kurz ◽  
Sang Bong Yi ◽  
...  
Keyword(s):  
Manufacturing Process ◽  
Cost Effective ◽  
Weight Saving ◽  
Roll Casting ◽  
Thin Walled ◽  
Potential Weight ◽  
Engine Blocks ◽  
Application Fields ◽  
Cast Magnesium ◽  
Twin Roll

Magnesium as the lightest structural metal offers significant potential weight saving compared with steel and aluminium. Cast magnesium components are widely used, e.g. as engine blocks or gear box housings. To open more opportunities for weight saving, it is necessary to widen the application fields to wrought products, such as large thin walled components for which sheets as semi-finished products are needed. The production and processing of magnesium sheets material is currently hampered by the limited formability of magnesium and high costs. The use of the twin-roll casting (TRC) as a cost-effective manufacturing process and the development of new calcium-containing alloys are leading to a decisive reduction of those obstacles.

scholarly journals Study of the Mechanical Properties of Strips Obtained in TRC Line

2016 ◽  
Vol 61 (2) ◽  
pp. 1101-1108 ◽  
Author(s):  
A. Mamala ◽  
W. Ściężor ◽  
P. Kwaśniewski ◽  
J. Grzebinoga ◽  
R. Kowal
Keyword(s):  
Mechanical Properties ◽  
Chemical Composition ◽  
Cold Rolling ◽  
Rolling Process ◽  
Twin Roll Casting ◽  
Integrated Method ◽  
Casting Technology ◽  
Roll Casting ◽  
Processing Line ◽  
Twin Roll

Abstract Twin Roll Casting technology belongs to modern, integrated method of processing aluminum and its alloys. This method includes preparation of liquid metal and its continuous casting between the rotating cylindrical crystallizers, optional homogenizing treatment, cold rolling and optional interoperation or final heat treatment. Final products of TRC method are strips with a thickness from few to several millimeters, which can be directly subjected to cold rolling process to afford a sheet. Properties of final product are limited by the material’s condition, its chemical composition and also selected path of its processing technology. The paper presents research results of chemical composition and mechanical properties of strips obtained in Twin Roll Casting processing line.

scholarly journals Twin Roll Casting and Rolling of New Mg-Wrought Alloys for Body Protective Safety Equipment

2014 ◽  
Vol 783-786 ◽  
pp. 534-536
Author(s):  
Joachim Wendt ◽  
Boris Bronfin ◽  
Lennart Stutz ◽  
Gerrit Kurz ◽  
Sabrina Schmitt ◽  
...  
Keyword(s):  
Magnesium Alloys ◽  
Automotive Industry ◽  
Transportation Industry ◽  
Roll Casting ◽  
Protection Systems ◽  
Potential Applications ◽  
Cast Alloys ◽  
Cast Magnesium Alloys ◽  
Cast Magnesium ◽  
Twin Roll

Currently magnesium alloys are used for different applications in the transportation industry where cast magnesium alloys dominate the market. Although cast alloys predominate over wrought products such as extrusions, forgings, sheet and plate, the latter are also being used in a variety of different applications. Recently, a growing interest in the automotive industry in looking at potential applications for magnesium turned back towards wrought alloys. Typically, applications of magnesium sheets are sought in automotive or aeronautics industry. However, the spectrum of potential applications can be significantly expanded. For example, body protection systems for civil services like police, custom officers and prison personnel currently include anatomically shaped aluminium alloy sheets. Replacement of aluminium alloys by magnesium to result in substantial weight savings up to 30%.

Procedure to Analyze the Formation of Segregations Using the PLS-SEM Approach

2017 ◽  
Vol 746 ◽  
pp. 75-83 ◽  
Author(s):  
Claudia Kawalla ◽  
Madlen Ullmann ◽  
Michael Höck
Keyword(s):  
Mechanical Properties ◽  
Structural Equation ◽  
New Technologies ◽  
Equation Modeling ◽  
The Novel ◽  
Automotive Components ◽  
Roll Casting ◽  
Twin Roll ◽  
Rolling Technology

Decreasing optimization potential concerning the weight reduction in aircraft and automotive components boost the demand for lightweight materials and new technologies. An opportunity to achieve considerable weight-savings is the application of magnesium strips produced by the novel Twin-roll casting and hot rolling technology. During the production the quality of magnesium strips can be reduced by segregations, which also influence the distribution of the mechanical properties. Exploring the formation of segregations is one research objective of this paper using the partial least squares structural equation modeling (PLS-SEM).

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