Effect of Iron Addition to Aluminium on the Structure and Properties of Wires Used for Electrical Purposes

2011 ◽  
Vol 690 ◽  
pp. 459-462 ◽  
Author(s):  
Michał Jabłoński ◽  
Tadeusz Knych ◽  
Beata Smyrak
Keyword(s):  
Iron Content ◽  
Small Diameter ◽  
Wire Drawing ◽  
Drawing Process ◽  
Structure And Properties ◽  
Wire Rod ◽  
Mechanical And Electrical Properties ◽  
Rolling Line ◽  
Application Characteristics ◽  
Batch Material

Eight hypoeutectic aluminium alloys with iron content within the range of 0.07-1.09% by weight, were examined. The structure, the mechanical and electrical properties of wires used for electrical purposes were studied. The batch material for the drawing process was wire rod obtained from the continuous casting and rolling line by Continuus-Properzi method. It has shown a linear relationship between mechanical properties of wire rod, a higher plasticity of wire after drawing process and an increase in thermal resistance of the material with increasing iron content. The findings enable to draw conclusions of basic and application characteristics, pointing to the possibility of using aluminium with higher iron content in the wire drawing process of small diameter and microwires for the production of automotive bundles, accumulator cables and winding wires.

Influence of Casting Velocity on Structure and Properties of AlFe0,5 Alloy

2015 ◽  
Vol 641 ◽  
pp. 56-62 ◽  
Author(s):  
Michal Jablonski ◽  
Tadeusz Knych ◽  
Andrzej Mamala ◽  
Maciej Palczewski
Keyword(s):  
Casting Process ◽  
Wire Drawing ◽  
Direct Chill ◽  
Direct Chill Casting ◽  
Drawing Process ◽  
Structure And Properties ◽  
Chill Casting ◽  
Wire Rod ◽  
Aluminium Wire ◽  
Direct Chill Casting Process

The effect of iron addition on the structure and properties of aluminium wire rod obtained in the laboratory horizontal direct chill casting process has been analyzed. In addition, the impact of the casting speed on the properties of aluminium bars, containing the 0.5 wt% of Fe, and laboratory wire drawing process has been examined. The addition of iron increase the strength and plasticity of aluminium wire rod in as-cast condition and after wire drawing process, while the electrical conductivity drop acceptable. Moreover, by improving the plasticity of wires became possible to increase the deformability limit, measured by the reduction in the wire diameter by drawing to a level of less than 0.5 mm. Small-diameter wires are used for the construction of automotive wire harnesses, cables battery or winding wires. It has been shown that iron is beneficial for mechanical and technological properties of aluminium, and the horizontal direct chill casting process by graphite crystallizer may be an alternative solution in comparison with industrial scale of continuous casting and rolling by Properzi method (CCR) or Southwire SCR process in the context of the preparation of smaller amounts of material with scrap metals.

scholarly journals Fabrication of 50.0 μm Ultra-Fine Pure Rhodium Wire, Using a Multi-Pass Wire Drawing Process, for Probe Card Pins

Materials ◽  
2019 ◽  
Vol 12 (13) ◽  
pp. 2194 ◽  
Author(s):  
Sang-Kon Lee ◽  
In-Kyu Lee ◽  
Sung-Yun Lee ◽  
Sun-Kwang Hwang
Keyword(s):  
Finite Element ◽  
Electrical Properties ◽  
Wire Drawing ◽  
Fe Analysis ◽  
Drawing Process ◽  
Electronic Components ◽  
Mechanical And Electrical Properties ◽  
Fine Wire ◽  
Pass Schedule ◽  
Probe Card

Rhodium is a rare material that is widely used in electrical and electronic components due to its excellent mechanical and electrical properties. Ultra-fine rhodium wires in particular are widely used in electronic components. In this study, a multi-pass wire drawing process was designed to fabricate ultra-fine pure rhodium wire with a diameter of 50.0 µm from an initial diameter of 80.0 µm, which is used as probe card pins. An elastic–plastic finite element (FE) analysis was performed to validate the pass schedule that was designed for this study. A fine wire drawing experiment was also carried out to verify the effectiveness of the designed process. As a result, the ultra-fine rhodium wire was fabricated using the design process without wire breaks and the diameter of the final drawn wire was 47.80 µm.

scholarly journals Influence of Fe and Si Addition on the Properties and Structure Conductivity Aluminium

2017 ◽  
Vol 62 (3) ◽  
pp. 1541-1547 ◽  
Author(s):  
M. Jabłoński ◽  
T. Knych ◽  
A. Mamala ◽  
B. Smyrak ◽  
K. Wojtaszek
Keyword(s):  
Casting Process ◽  
Wire Drawing ◽  
Direct Chill ◽  
Drawing Process ◽  
Wire Rod ◽  
Aluminium Wire ◽  
The Impact ◽  
Direct Chill Casting Process ◽  
Cast Condition ◽  
Si Addition

AbstractThe effect of iron and silicon addition on the structure and properties of aluminium wire rod obtained in the laboratory horizontal direct chill casting process has been analysed. In addition, the impact of laboratory wire drawing process has been examined. The addition of iron and velocity of casting increase the strength of aluminium wire rod in as-cast condition while the electrical conductivity drop acceptable. Moreover, the laboratory wire drawing process causes work-hardening wires and increase drawing tension as a result of fragmentation of structure and growth of grain boundaries. It has been shown that iron is beneficial for mechanical and technological properties of aluminium.

scholarly journals WIRE BREAKAGE DURING WIRE DRAWING DUE TO THE PRESENCE OF SURFACE DEFECTS, INHERITED FROM WIRE ROD

2018 ◽  
pp. 26-31
Author(s):  
A. S. Siarohina
Keyword(s):  
Surface Defects ◽  
Wire Drawing ◽  
Drawing Process ◽  
Wire Rod ◽  
Metallographic Structure ◽  
Wire Breakage

The main causes of wire breakage during drawing are listed, the appearance signs and peculiarities of metallographic structure of destruction are described. The type and cause of the breakage could be identified on basis of this description. The transformation of defects in the drawing process is presented.

Deformation Law of Cold Drawing Process of High Strength Bridge Cable Steel

2021 ◽  
Vol 1035 ◽  
pp. 801-807
Author(s):  
Xiao Lei Yin ◽  
Jian Cheng ◽  
Gang Zhao
Keyword(s):  
Strain Path ◽  
High Strength ◽  
Cold Drawing ◽  
Wire Drawing ◽  
Radial Deformation ◽  
Steel Bridge ◽  
Drawing Process ◽  
Single Pass ◽  
Potential Relationship ◽  
The Wire

High-strength cable-steel bridge is the “lifeline” of steel structure bridges, which requires high comprehensive mechanical properties, and cold-drawing is the most important process to produce high-strength cable-steel bridge. Therefore, through the ABAQUS platform, a bridge wire drawing model was established, and the simulation analysis on the process of stress strain law and strain path trends for high-strength bridge steel wire from Φ 12.65 mm by seven cold-drawing to Φ 6.90 mm was conducted. The simulation results show that the wire drawing the heart of the main axial deformation, surface and sub-surface of the main axial and radial deformation occurred, with the increase in the number of drawing the road, the overall deformation of the wire was also more obvious non-uniformity. In the single-pass drawing process, the change in the potential relationship of each layer of material was small, and multiple inflection points appeared in the strain path diagram; the change in the seven-pass potential relationship was more drastic, which can basically be regarded as a simple superposition of multiple single-pass pulls.

scholarly journals Influence of a modified drawing process on the resulting residual stress state of cold drawn wire

2018 ◽  
Vol 190 ◽  
pp. 04004
Author(s):  
Markus Baumann ◽  
Alexander Graf ◽  
René Selbmann ◽  
Katrin Brömmelhoff ◽  
Verena Kräusel ◽  
...  
Keyword(s):  
Residual Stress ◽  
Residual Stresses ◽  
Wire Drawing ◽  
Industrial Applications ◽  
Drawing Process ◽  
Die Geometry ◽  
Residual Stress State ◽  
Drawing Die ◽  
Process Modification ◽  
The Wire

Torsion bars are used in automotive engineering as well as in other industrial applications. Such elements are produced by bending cold drawn wires. In conventional drawing processes tensile residual stresses occur near the surface of the wire. Small bending radii, which are required in limited assembly spaces, result in component failure due to reduced formability. Additional operations such as heat treatment or shot peening are necessary to influence the residual stress of the wire and to improve the dynamic stability of the torsion bar. The aim of the research is to reduce tensile residual stresses near the surface of the wire in order to eliminate process steps and to enhance formability. Therefore, a forming technology is developed by using a modified drawing die geometry on the basis of gradation extrusion. Finite element simulation is used to investigate the influences of element geometry, number of elements and process modification on the resulting residual stresses after wire drawing of a steel alloy. The results are evaluated and compared with the conventional wire drawing process. Furthermore, the requirements for the design of an experimental test device will be outlined as well as the measurement of the residual stresses by using X-ray diffraction.

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