Journal ArticleDOI
Single press/single sinter solutions to high density
TLDR
In this paper, the advantages and disadvantages of warm powder warm die processing and die heating only have been discussed with practical part production with mechanical properties achievable via high density processing, with the main asset of the powder metallurgy route is its ability to produce structural components that meet functional requirements in a cost efficient manner.Abstract:
The main asset of the powder metallurgy route is its ability to produce structural components that meet functional requirements in a cost efficient manner. Many PM parts are produced at densities lower than 7·1 g cm−3 because achieving higher densities often requires additional processing steps, which result in increased part cost. Although warm powder warm die processing is not new, new methods that employ die heating only have been introduced that enable high green density via single press/single sinter. This simplified processing will potentially lead to greater market acceptance of high density PM parts. However, drawbacks of die heat only are part size restrictions and higher compaction loads. Both processes are useful in the production of high density PM components. This paper will detail the advantages and disadvantages of both processes. Practical part production will be discussed with mechanical properties achievable via high density processing.read more
Citations
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Journal ArticleDOI
Effects of annealing on high velocity compaction behavior and mechanical properties of iron-base PM alloy
TL;DR: In this article, the effects of powder annealing on densification behavior, variations of stress waves and the resulting mechanical properties of iron-base alloy were studied, and the results showed that micro-hardness of the powder decreases from 97 Hv to 81 Hv after the powder was annealed at 800°C.
Journal ArticleDOI
Effects of warm die on high velocity compaction behaviour and mechanical properties of iron based PM alloy
TL;DR: In this article, the effects of warm die on high velocity compaction (HVC) densification behavior, variations of stress waves and the resulting mechanical properties of iron based alloy were studied.
Development and Properties of a New Malleable Iron Powder Grade
F. Chagnon,C. Coscia +1 more
TL;DR: In this paper, the carbon is dispersed as graphite nodules in a ferritic matrix, which achieves nearly 100% densification through liquid phase sintering at 1160°C to a final density of 7.5 g/cm³.
Journal ArticleDOI
Thixotropic properties of multi-functional binder and compaction behaviour of the low alloyed binder-treated powder
TL;DR: In this article, a multi-functional binder with adhesive and lubricant effect was designed, and the thixotropic properties of the binder components and the resulting binder, the adhesive effect and compaction b...
Journal ArticleDOI
Design of the thixotropic lubricant and its influence on compaction behavior of Cr-alloyed PM steel
TL;DR: In this article, a multifunctional lubricant containing thixotropic components was designed for Cr-alloyed PM steel, and the properties of the lubricant components, compaction behavior of the powder mixture and the lubrication effects were explored.
References
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Journal Article
High density processing of high performance ferrous materials
H. G. Rutz,F. G. Hanejko +1 more
TL;DR: In this paper, a commercially proven method for obtaining single compaction/single sinter densities in the 7.25 to 7.55g/cm 3 range by means of the patented ANC0RDENSE TM technology is introduced.
Proceedings ArticleDOI
Development of a Warm Compacted Automatic Transmission Torque Converter Hub
Thomas Miller,Francis Hanejko +1 more
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