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|Title: ||Effect of infra-red power level on the sintering behaviour in the high speed sintering process|
|Authors: ||Majewski, Candice E.|
|Keywords: ||Rapid prototyping|
High speed sintering
|Issue Date: ||2008|
|Publisher: ||© Emerald Group Publishing Limited|
|Citation: ||MAJEWSKI, C.E. ... et al, 2008. Effect of infra-red power level on the sintering behaviour in the high speed sintering process. Rapid prototyping journal, 14(3), pp. 155–160 [DOI 10.1108/13552540810878012]|
|Abstract: ||Purpose: To investigate the effects of the infra-red power level on sintering
behaviour in the High Speed Sintering process.
Design/methodology/approach: Single-layer parts were produced using the
High Speed Sintering process, in order to determine the effect of the infra-red
power level on the maximum achievable layer thickness, and the degree of
sintering. The parts were examined using both optical microscopy and
Findings: Whilst it was expected that an increase in the infra-red lamp
powder might allow an increase in the depth of sintering that could be
achieved, as a result of increased thermal transfer through the powder, results
in fact indicated that there is a maximum layer thickness that can be achieved,
as a result of part shrinkage in the z direction.
Optical microscopy images have shown that a greater degree of sintering
occurs at higher power levels, which would be expected to correspond to an
improvement in the mechanical properties of the parts produced. These
images also indicate that the RAM forms in small ‘islands’ on the powder bed
surface. However, these islands begin to merge as sintering progresses, to a
greater degree as the infra-red lamp power is increased.
Research limitations/implications: These results are based only on single
layer parts. Further work will examine the sintering characteristics of multiple
Practical implications: Results have shown that, whilst it is not possible to
increase the achievable layer thickness of the parts produced by modifying
the infra-red lamp power, the degree of sintering can be improved greatly by
increasing the power.
Originality/value: High Speed Sintering is an entirely new process which is
currently still under development; the results presented here will directly
impact the direction of further development and research into this process.|
|Description: ||This is a journal article. It was published in the journal, Rapid prototyping journal, [© Emerald]. The definitive version is available at: http://www.emeraldinsight.com/1355-2546.htm|
|Appears in Collections:||Published Articles (Mechanical, Electrical and Manufacturing Engineering)|
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