Analysis, Validation and Optimization of the Multi-Stage Sequential Wiredrawing Process of EN AW-1370 Aluminium

Rodríguez‐Alabanda, Óscar; Romero, Pablo E.; Molero, Esther; Guerrero‐Vaca, Guillermo

doi:10.3390/met9091021

Cited by 7 publications

(4 citation statements)

References 21 publications

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“…The complexity of this process increases since it is a technique that is generally applied as a sequence of consecutive reductions of section: a multi-stage sequence by which wire, or rod geometry is progressively transformed. Thus, different analytical, numerical, and experimental methods have been developed in many previous works to analyse and improve this industrial process [14][15][16]. Many of the problems that occur in wire drawing are due to merely a geometric cause.…”

Section: Introductionmentioning

confidence: 99%

Analytical and Numerical Models for the Analysis of the Multi-Stage Drawing Process of Zn Wires

Rodríguez-Alabanda,

Guerrero-Vacas,

Comino

et al. 2023

KEM

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Today environmental aspects are of great importance in the sustainability of the planet, in this aspect anti-corrosive treatments facilitate the durability of metal structures. Among the most widely used anticorrosive metals is Zinc and its alloys. In the deep galvanizing process of large steel structures, tanks containing Zinc in a molten state at a temperature of 460 °C are necessary. Then, to protect elements that are too large or that need to be treated "in situ", metallization is used, which consists of projecting molten zinc wire on the metal surface that has previously been subjected to a process sandblasting (mechanical abrasion). The two main methods of metalizing are electric arc and flame. In the present work an industrial wiredrawing draft has been studied, determining the drawing force and the power required in each stage. For this purpose, linear strain hardening model vs non-linear strain hardening model that takes strain rate hardening into account has been proposed for its implementation in the analytical model of the process and finite element model (FEM) has been developed too. The use of Hall Petch equation has been allowed to get a prediction of the evolution of the grain size during the wiredrawing sequence.

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Section: Introductionmentioning

confidence: 99%

Analytical and Numerical Models for the Analysis of the Multi-Stage Drawing Process of Zn Wires

Rodríguez-Alabanda,

Guerrero-Vacas,

Comino

et al. 2023

KEM

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“…Wire can be obtained through various metal forming processes, namely rolling [2,3], extrusion [4] and drawing [5][6][7], or an effective combination of them. However, drawing remains the most widespread method of wire production [8,9].…”

Section: Introductionmentioning

confidence: 99%

Mathematical Modeling of Heating and Strain Aging of Steel during High-Speed Wire Drawing

Radionova

Gromov

Svistun

et al. 2022

Metals

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In this article, a mathematical model of the wire’s average temperature change in the process of multiple drawing on high-speed straight-line drawing machines has been developed. The calculation results showed that the average temperature of the wire during a drawing at a speed of up to 45 m/s on straight-line drawing machines could reach 400 °C. Deformation heating of the wire during drawing does not exceed 60 °C, and heating due to sliding friction can reach 300 °C, depending on the friction coefficient, which ranges from 0.05 to 0.15. The average strain rates under the conditions of the modern high-speed drawing process reach 7000 s−1. Over the course of the research, it was found that there are no conditions for the occurrence of dynamic deformation aging due to impurity atoms of carbon, nitrogen and oxygen. At the same time, at the temperature and speed parameters of the high-speed wire drawing, conditions are created for the onset of the dynamic strain aging of steel in the presence of hydrogen atoms. Therefore, during heat treatment and pickling, it is necessary to exclude the hydrogenation of steel. It has been established that in order to exclude static strain aging of steel during drawing, it is necessary to prevent heating the wire above 180–200 °C.

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“…It should be noted that many of the previous works consulted are mainly focused on the study of the influence of the geometrical parameters involved in the process [18][19][20][21] and some of them on the objective directed to the optimization of the multi-stage drawing processes in terms of the die geometry and the number of passes to be carried out in the in-line wiredrawing process [22][23][24]. Although some of these works describe the use of emulsions based on soluble oils as a common solution in the wiredrawing process of non-ferrous metals and alloys and implement the friction coefficient (µ) for the process analysis, none of them have defined and experimentally studied their own tribological system in order to determine the best conditions for the best optimization of this key parameter.…”

Section: Introductionmentioning

confidence: 99%

The influences of the variable speed and internal die geometry on the performance of two commercial soluble oils in the drawing process of pure copper fine wire

Martínez

Rodríguez‐Alabanda

Prisco

et al. 2021

Int J Adv Manuf Technol

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The cold wiredrawing process constitutes a classical-tribological system in which a stationary tribe-element (die) is in contact with a tribe-element in relative motion (wire) and both interacting with the interfacial tribe-element (lubricant). This condition is reflected in the effect of friction as a function of the drawing speed and temperature, and directly affects the wearing of the surface into the die and the final quality on the drawn wire. The aim of this work has been to determine the best conditions to process ETP-copper using two different types of oil/water emulsion lubricants. For this purpose, six different die geometries have been proposed and a set of tests have been carried out at different speeds (between 1 and 21 m/s) to determine those combinations that give a lower value in the required drawing force (Fd). The experiments allowed to know the friction coefficient (µ), the temperature profile inside the drawing die and in the lubricant and also the mean roughness (Ra) in the drawn product. The results have shown that drawing speeds above 10 m/s significantly decrease the drawing force and, as a consequence, the friction effect on the interface. The best results have been achieved in the combinations of the lower die angle (2β = 14°) with drawing speeds between 17 and 18 m/s with both types of lubricants used, obtaining the lower values of the friction coefficient between µ = 0.10–0.15 with the lubricant type D (Agip S234-60 oil at 7% concentration). It has been found that those tests carried out with dies with a smaller approach angle have generally made it possible to obtain better qualities in the final product. Additionally, FEM simulations have been done to analyse those cases with the lower values of µ, throwing values of Fd that are consistent with those measured in the experimental setting and allowing to better understand the behavior of the material as it passes through the die.

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Analysis, Validation and Optimization of the Multi-Stage Sequential Wiredrawing Process of EN AW-1370 Aluminium

Cited by 7 publications

References 21 publications

Analytical and Numerical Models for the Analysis of the Multi-Stage Drawing Process of Zn Wires

Analytical and Numerical Models for the Analysis of the Multi-Stage Drawing Process of Zn Wires

Mathematical Modeling of Heating and Strain Aging of Steel during High-Speed Wire Drawing

The influences of the variable speed and internal die geometry on the performance of two commercial soluble oils in the drawing process of pure copper fine wire

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