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Comparative study on the machinability of lead-free brass

Schultheiss, Fredrik LU ; Johansson, Daniel LU ; Bushlya, Volodymyr LU ; Zhou, Jinming LU ; Nilsson, Kent and Ståhl, Jan-Eric LU (2017) In Journal of Cleaner Production 149. p.366-377
Abstract
Lead is a heavy metal which is toxic even at low exposure levels. Although the amount of lead used in industry is steadily declining, it still constitutes a common alloying element for most conventional brass varieties. Today, conventional brasses contain roughly 3 wt % lead. One of the main incentives for using lead as an alloying element is that it has a markedly positive effect on the machinability of the workpiece material. However, as an increasing amount of lead-free brasses are becoming commercially available and future legislative actions could be expected, even further limiting the use of lead as an alloying element, there is a renewed interest in evaluating the machinability of these new lead-free materials. The current article... (More)
Lead is a heavy metal which is toxic even at low exposure levels. Although the amount of lead used in industry is steadily declining, it still constitutes a common alloying element for most conventional brass varieties. Today, conventional brasses contain roughly 3 wt % lead. One of the main incentives for using lead as an alloying element is that it has a markedly positive effect on the machinability of the workpiece material. However, as an increasing amount of lead-free brasses are becoming commercially available and future legislative actions could be expected, even further limiting the use of lead as an alloying element, there is a renewed interest in evaluating the machinability of these new lead-free materials. The current article focuses on evaluating the machinability of the commonly used, lead-containing, CuZn39Pb3 brass as compared to the commercially available, lead-free alternative CuZn21Si3P. An improved understanding of the difference in machinability was obtained by comparing the properties and behavior of these two materials in machining. For instance, it was noted that the tool wear is significantly higher while machining CuZn21Si3P as compared to CuZn39Pb3 under similar conditions. This can, to a certain extent, be counteracted through the use of inexpensive tool coatings, making lead-free brass a viable option for commercial production. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of Cleaner Production
volume
149
pages
366 - 377
publisher
Elsevier
external identifiers
  • scopus:85015756533
  • wos:000403330200031
ISSN
0959-6526
DOI
10.1016/j.jclepro.2017.02.098
language
English
LU publication?
yes
id
4d302399-45d7-42be-82b7-fcc59fe8d4b7
date added to LUP
2017-03-02 14:24:51
date last changed
2018-04-29 04:36:48
@article{4d302399-45d7-42be-82b7-fcc59fe8d4b7,
  abstract     = {Lead is a heavy metal which is toxic even at low exposure levels. Although the amount of lead used in industry is steadily declining, it still constitutes a common alloying element for most conventional brass varieties. Today, conventional brasses contain roughly 3 wt % lead. One of the main incentives for using lead as an alloying element is that it has a markedly positive effect on the machinability of the workpiece material. However, as an increasing amount of lead-free brasses are becoming commercially available and future legislative actions could be expected, even further limiting the use of lead as an alloying element, there is a renewed interest in evaluating the machinability of these new lead-free materials. The current article focuses on evaluating the machinability of the commonly used, lead-containing, CuZn39Pb3 brass as compared to the commercially available, lead-free alternative CuZn21Si3P. An improved understanding of the difference in machinability was obtained by comparing the properties and behavior of these two materials in machining. For instance, it was noted that the tool wear is significantly higher while machining CuZn21Si3P as compared to CuZn39Pb3 under similar conditions. This can, to a certain extent, be counteracted through the use of inexpensive tool coatings, making lead-free brass a viable option for commercial production.},
  author       = {Schultheiss, Fredrik and Johansson, Daniel and Bushlya, Volodymyr and Zhou, Jinming and Nilsson, Kent and Ståhl, Jan-Eric},
  issn         = {0959-6526},
  language     = {eng},
  pages        = {366--377},
  publisher    = {Elsevier},
  series       = {Journal of Cleaner Production},
  title        = {Comparative study on the machinability of lead-free brass},
  url          = {http://dx.doi.org/10.1016/j.jclepro.2017.02.098},
  volume       = {149},
  year         = {2017},
}