Conference proceedings article

A device for studying wood chipping under realistic conditions

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Author list: Carlberg, Torbjörn;Gradin, Per A;Hellström, Lisbeth M

Publication year: 2009

Start page: 252

End page: 254

Number of pages: 3


Abstract

It seems to be a consensus in the papermaking society that chip quality is very much a matter of a narrow thickness distribution. Much effort has been spent on studying the influence of certain process parameters on the thickness distribution of chips. However, when these studies have been performed in a laboratory environment, the conditions have been far from realistic when it comes to for instance cutting rates. In this paper a laboratory chipper is presented, which has been developed to admit chipping at rates used in the industry. The knife holder is instrumented in such a way that moments and forces in three directions can be measured. Results from tests, where the cutting rate is varied, is presented and it is concluded that the laboratory chipper is a versatile tool in the process of increasing the understanding of the chipping process.


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