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Materials Science and Technology Volume 36, 2020 - Issue 10
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Research Articles

On the processing properties and friction behaviours during compaction of powder mixtures

Wenchao Chena School of Materials Science and Engineering, Hefei University of Technology, Hefei, People’s Republic of China;b Research Centre for Powder Metallurgy Engineering and Technology of Anhui Province, Hefei, People’s Republic of China
,
Jinghui Wanga School of Materials Science and Engineering, Hefei University of Technology, Hefei, People’s Republic of China;b Research Centre for Powder Metallurgy Engineering and Technology of Anhui Province, Hefei, People’s Republic of China
,
Shiping Wangb Research Centre for Powder Metallurgy Engineering and Technology of Anhui Province, Hefei, People’s Republic of China;c East China Powder Metallurgy Factory, Ma’anshan, People’s Republic of China
,
Pengqi Chena School of Materials Science and Engineering, Hefei University of Technology, Hefei, People’s Republic of China;b Research Centre for Powder Metallurgy Engineering and Technology of Anhui Province, Hefei, People’s Republic of ChinaCorrespondence[email protected]
ORCID Iconhttps://orcid.org/0000-0002-6416-3779
ORCID Icon &
Jigui Chenga School of Materials Science and Engineering, Hefei University of Technology, Hefei, People’s Republic of China;b Research Centre for Powder Metallurgy Engineering and Technology of Anhui Province, Hefei, People’s Republic of ChinaCorrespondence[email protected]
Pages 1057-1064 | Received 31 Oct 2019, Accepted 23 Mar 2020, Published online: 07 Apr 2020
 
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ABSTRACT

Iron-based powder mixtures were prepared by dry and wet mixing method. The friction properties during compaction were tested by measuring the internal and external friction coefficient. The test results showed that the wet mixing process could realise the homogeneity of lubricant and improve the processing properties of the powder mixtures. With 0.6 wt-% lubricants, wet mixing powder mixtures have a flow rate of 29.6 s/50 g, an apparent density of 3.18 g cm–3, a repose angle of 35.5°, and the friction coefficient during the compaction is 0.223. An equation to calculate the total (both internal and external) friction forces during the compaction process is proposed, and then the factors influencing the friction coefficient during compaction were quantitatively analysed.

Acknowledgements

This work was financially supported by Innovation Fund for Technology Based Firms of China (12C26213402742).

Disclosure statement

No potential conflict of interest was reported by the author(s).

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