The Experts below are selected from a list of 42 Experts worldwide ranked by ideXlab platform
K. Mageza - One of the best experts on this subject based on the ideXlab platform.
-
Annealer curve characteristics of electrolytically refined tough pitch copper (Cu-ETP) and oxygen free up-cast copper (Cu-OF) for electrical cable Wires
Results in Materials, 2020Co-Authors: C. Banganayi, K. Nyembwe, K. MagezaAbstract:Abstract Annealing is a critical step during the Wire Drawing of copper to produce Wires with the required ductility and conductivity for electrical applications. In this investigation, the characteristics of commercial annealers for Wire Drawing of electrolytically refined tough-pitch copper (Cu-ETP) and oxygen-free upcast copper (Cu-OF) Wires were assessed through annealer curves with respect to applied voltage and resulting percentage elongation of final products. Experiments were carried out on three M315 Niehoff Machines of varying speeds used for medium Wire Drawing from 2.2 mm diameter to 0.66 mm and 0.53 mm diameters. The results show similarities and differences between annealer curve characteristics of Wire Drawing Machines regarding the required voltage for minimum and maximum elongation of Wires without oxidation depending on the type of copper raw material used. In particular, the minimum 18% required elongation of Wires was achieved with the same applied voltage irrespective of the machine speed and type of copper. In addition, Cu-OF reached higher maximum percentage elongation without oxidation of the Wire compared to Cu-ETP.
C. Banganayi - One of the best experts on this subject based on the ideXlab platform.
-
Annealer curve characteristics of electrolytically refined tough pitch copper (Cu-ETP) and oxygen free up-cast copper (Cu-OF) for electrical cable Wires
Results in Materials, 2020Co-Authors: C. Banganayi, K. Nyembwe, K. MagezaAbstract:Abstract Annealing is a critical step during the Wire Drawing of copper to produce Wires with the required ductility and conductivity for electrical applications. In this investigation, the characteristics of commercial annealers for Wire Drawing of electrolytically refined tough-pitch copper (Cu-ETP) and oxygen-free upcast copper (Cu-OF) Wires were assessed through annealer curves with respect to applied voltage and resulting percentage elongation of final products. Experiments were carried out on three M315 Niehoff Machines of varying speeds used for medium Wire Drawing from 2.2 mm diameter to 0.66 mm and 0.53 mm diameters. The results show similarities and differences between annealer curve characteristics of Wire Drawing Machines regarding the required voltage for minimum and maximum elongation of Wires without oxidation depending on the type of copper raw material used. In particular, the minimum 18% required elongation of Wires was achieved with the same applied voltage irrespective of the machine speed and type of copper. In addition, Cu-OF reached higher maximum percentage elongation without oxidation of the Wire compared to Cu-ETP.
Zhang Jie - One of the best experts on this subject based on the ideXlab platform.
-
More words about the new developments of Wire Drawing Machines
Electric Wire & Cable, 2003Co-Authors: Zhang JieAbstract:This paper presents briefly the newly developed Wire Drawing Machines and the concepts of design. It predicts the trend of the future development of the homemade Wire Drawing Machines.
K. Nyembwe - One of the best experts on this subject based on the ideXlab platform.
-
Annealer curve characteristics of electrolytically refined tough pitch copper (Cu-ETP) and oxygen free up-cast copper (Cu-OF) for electrical cable Wires
Results in Materials, 2020Co-Authors: C. Banganayi, K. Nyembwe, K. MagezaAbstract:Abstract Annealing is a critical step during the Wire Drawing of copper to produce Wires with the required ductility and conductivity for electrical applications. In this investigation, the characteristics of commercial annealers for Wire Drawing of electrolytically refined tough-pitch copper (Cu-ETP) and oxygen-free upcast copper (Cu-OF) Wires were assessed through annealer curves with respect to applied voltage and resulting percentage elongation of final products. Experiments were carried out on three M315 Niehoff Machines of varying speeds used for medium Wire Drawing from 2.2 mm diameter to 0.66 mm and 0.53 mm diameters. The results show similarities and differences between annealer curve characteristics of Wire Drawing Machines regarding the required voltage for minimum and maximum elongation of Wires without oxidation depending on the type of copper raw material used. In particular, the minimum 18% required elongation of Wires was achieved with the same applied voltage irrespective of the machine speed and type of copper. In addition, Cu-OF reached higher maximum percentage elongation without oxidation of the Wire compared to Cu-ETP.
Marcelo Franzkowiak Stahlschmidt - One of the best experts on this subject based on the ideXlab platform.
-
Estudo do processo de recozimento em linha de galvanização : caracterização e implicações inerentes ao arraste de chumbo
Universidade Federal do Rio Grande do Sul, 2010Co-Authors: Marcelo Franzkowiak StahlschmidtAbstract:O presente trabalho descreve os resultados obtidos a partir de análises do processo de trefilação de arames e posterior recozimento destes em forno de chumbo. Baseado na metodologia DOE, busca-se o entendimento da ocorrência do arraste de chumbo proveniente dos arames recozidos, com o objetivo de minimizar este problema. Amostras de arame foram coletadas diretamente em máquinas de trefila e em linha de galvanização e submetidas a ensaios de verificação da rugosidade superficial e suas implicações no arraste de chumbo, baseadas em variáveis como velocidade da linha, diâmetro do arame, temperatura do banho de chumbo, capacidade térmica da cuba, condição superficial do arame, rugosidade do arame e limpeza superficial do arame. Foram propostas alternativas para minimizar o arraste de chumbo buscando o aumento do desempenho em máquinas de trefila e do recozimento emlinha de galvanização.The present work describe the experiments carried out based on the Wire Drawing process analysis and later annealing on lead furnace on a galvanizing line. Using D.O.E methodology, the aim is to understand the occurrence of lead entrainment originating from the annealed Wires in order to decrease this problem. Wire samples were collected from Wire Drawing Machines and galvanizing line and submitted to surface roughness analysis and its implications on lead drag out based on Wire speed, Wire diameter, lead bath temperature, thermal capacity of the lead kettle, Wire surface condition, Wire roughness and Wire superficial cleanliness. Proposals to decrease lead drag out were made in order to increase Wire Drawing Machines and galvanizing line performance
