A Comparison of Deep Drawing and Ironing of Metal Alloy Strip Produced Conventionally and Non-Conventionally via Semi Solid Material Processing

2008 ◽  
pp. 49-54
Author(s):  
Antonio de Pádua Lima Filho ◽  
Márcio Iuji Yamasaki ◽  
Leandro Akita Ono ◽  
Lourenço Nampo ◽  
Alcides Padilha
Keyword(s):  
Material Processing ◽  
Deep Drawing ◽  
Solid Material ◽  
Metal Alloy ◽  
Alloy Strip ◽  
Semi Solid

A Comparison of Deep Drawing and Ironing of Metal Alloy Strip Produced Conventionally and Non-Conventionally via Semi Solid Material Processing

2008 ◽  
Vol 141-143 ◽  
pp. 49-54 ◽  
Author(s):  
Antonio de Pádua Lima Filho ◽  
Márcio Iuji Yamasaki ◽  
Leandro Akita Ono ◽  
Lourenço Nampo ◽  
Alcides Padilha
Keyword(s):  
Deep Drawing ◽  
Mechanical Performance ◽  
Phase Segregation ◽  
Casting Process ◽  
Solid Material ◽  
Thin Strip ◽  
Hypoeutectic Alloy ◽  
Drawing Ratio ◽  
Cooling Slope ◽  
Semi Solid

A semi solid thin strip continuous casting process was used to obtain 50%wt Pb/50%wtSn strip by single and twin roll processing at speed of 15 m/min. A 50%wt Pb/50%wtSn plate ingot was also cast for rolling conventionally into strips of 1.4 mm thickness and 45 mm width for comparison with those achieved non-conventionally. This hypoeutectic alloy has a solidification interval and fusion temperature of approximately 31°C and 215°C respectively. The casting alloy temperature was around 280°C as measured by a type K immersion thermocouple prior to pouring into a tundish designed to maintain a constant melt flow on the cooling slope during semi solid material production. A nozzle with a weir ensures that the semi solid material is dragged smoothly by the lower roll, producing strip with minimum contamination of slag/oxide. The temperatures of the cooling slope and the lower roll were also monitored using K type thermocouples. The coiled semi solid strip, which has a thickness of 1.5 mm and 45 mm width, was rolled conventionally in order to obtain 1.2 mm thick strip. The coiled thixorolled strip had a thickness of 1.2 mm and achieved practically the same width as the conventional strips. Blanks of 40 mm diameter were cut from the strips in a mechanical press, ready for deep drawing and ironing for mechanical characterization. All the strips achieved from non-conventional processing had the same mechanical performance as those achieved conventionally. The limiting drawing ratio (LDR) achieved was approximately 2.0 for all strips. Microscopy examination was made in order to observe phase segregation during processing.

Investigation on the effects of the joint type on the driven out bead in the welded pipes produced by high-frequency induction welding

2020 ◽  
pp. 146442072097343
Author(s):  
M Ghaffarpour ◽  
D Akbari ◽  
H Moslemi Naeini
Keyword(s):  
Mechanical Properties ◽  
Weld Joint ◽  
High Frequency ◽  
Weld Zone ◽  
Welding Process ◽  
Solid Material ◽  
Outer Diameter ◽  
Metallurgical Properties ◽  
Semi Solid ◽  
High Frequency Induction

In this paper, the effects of the joint type on the driven-out bead of the roll-formed pipes, welded by high-frequency induction welding process are studied. The main goal is to predict and reduce the volume of the bead driven out in the weld seam. Moreover, it aims to move the semi-solid bead during welding to the outer diameter of the pipe. This study has two prior aims: to produce a defect-free joint and to improve the mechanical and metallurgical properties. In order to optimize the weld joint, various joint types have been investigated by experimental tests and simulation. Lastly, destructive tests were used to determine if the desired mechanical properties of the weld joint were obtained. The metallurgical properties and the derivation of the semi-solid material in the weld zone have both been investigated in terms of microstructure. According to the results, the proper joint type improves the mechanical properties by 5% and reduces the volume of the weld bead about 45%.

Penetration and Microbial Inactivation by High Voltage Atmospheric Cold Plasma in Semi-Solid Material

2020 ◽  
Vol 13 (10) ◽  
pp. 1688-1702
Author(s):  
Lei Xu ◽  
Ximena Yepez ◽  
Bruce Applegate ◽  
Kevin M Keener ◽  
Bernard Tao ◽  
...  
Keyword(s):  
High Voltage ◽  
Cold Plasma ◽  
Solid Material ◽  
Microbial Inactivation ◽  
Semi Solid

A Single Roll Caster for Aluminum Alloy Strip

2011 ◽  
Vol 382 ◽  
pp. 368-371 ◽  
Author(s):  
Toshio Haga ◽  
Kazuya Akitsu ◽  
Shinji Kumai ◽  
Hisaki Watari
Keyword(s):  
Mechanical Properties ◽  
Aluminum Alloy ◽  
Deep Drawing ◽  
Tension Test ◽  
Bending Test ◽  
Alloy Strip ◽  
Cast Strip ◽  
Strip Cast ◽  
Dc Casting

Single roll caster to cast strip with sound free solidified surface was invented. A scraper was attached to the single roll caster to improve the free solidified surface. AA5182 and AA6022 strips were cast using the single roll caster equipped with the scraper. Mechanical properties of the strip were investigated by tension test, bending test and deep drawing. Mechanical properties of the strip cast by the single roll caster were as same as those made by DC casting.

2705 Semi-solid Casting of Aluminum Cast Alloy strip by an unequal diameter twin roll caster

2006 ◽  
Vol 2006.1 (0) ◽  
pp. 139-140
Author(s):  
Toshio HAGA ◽  
Hideki INUI ◽  
Hiroshi SAKAGUCHI ◽  
Shinji KUMAI ◽  
Hisaki WATARI
Keyword(s):  
Cast Alloy ◽  
Alloy Strip ◽  
Twin Roll Caster ◽  
Semi Solid ◽  
Twin Roll

The Determination of Semi-Solid Processing Ability Using a Novel Rheo-Characterizer Apparatus

2008 ◽  
Vol 141-143 ◽  
pp. 343-348 ◽  
Author(s):  
Manel da Silva ◽  
Alain Lemieux ◽  
Hugues Blanchette ◽  
X. Grant Chen
Keyword(s):  
Grain Size ◽  
Cutting Temperature ◽  
Solid Material ◽  
Processing Conditions ◽  
Grain Refiner ◽  
Processing Ability ◽  
Working Principle ◽  
Semi Solid ◽  
The Impact

The “Rheo-Characterizer” is an apparatus designed to assess the quality control of the semi-solid material. The working principle is based on the recording and subsequent analysis of the force required to transversally cut the semi-solid slurry at constant speed. Semi-solid slurries produced under different conditions while using the SEED process were analyzed with the “Rheo- Characterizer”. The TiB2 grain refiner was also added to evaluate the impact on the microstructure and the cutting force. The microstructural features were measured and the grain size was analyzed for the different processing conditions. The effect of the cutting temperature on the resulting curve was also investigated. The results show that the “Rheo-Characterizer” is capable of differentiating between the varied microstructural morphologies and the solid fraction of the billet.

Werkstückerwärmung für das Thixoforming*/Heating workpieces for Thixoforming - Using inductor as sensor for monitoring the heating process of semi-solid material

2017 ◽  
Vol 107 (05) ◽  
pp. 340-345
Author(s):  
J. Uphoff ◽  
A. Lechler ◽  
A. Prof. Verl
Keyword(s):  
Solid State ◽  
Solid Fraction ◽  
Material Properties ◽  
Solid Material ◽  
Heating Process ◽  
Inductive Heating ◽  
Inductor Coil ◽  
Specific Material ◽  
Semi Solid

Das Thixoforming nutzt bei der Formgebung besondere Materialeigenschaften zur Herstellung metallischer Bauteile. Die verwendeten Legierungen müssen dazu in den sogenannten teilflüssigen Bereich erwärmt werden. Das Einstellen des geforderten Fest-Flüssig-Verhältnisses stellt besondere Anforderungen an die Erwärmung. Betrachtet werden verschiedene Messverfahren, welche die Induktorspule bei der induktiven Erwärmung als Sensor nutzen.   Thixoforming uses specific material properties for shaping metal workpieces. For this purpose, the alloys need to be heated to the so-called semi-solid state. The adjustment of the desired semi-solid fraction imposes high requirements on the heating process. Various measurement principles, which use the inductor-coil as a sensor in inductive heating processes, are presented.

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