The measurement of deformation force variation by using strain gages in extrusion technolgy
Published 2004-12-20
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Keywords
- Extrusion pressure,
- Punch shape,
- Finite Volume Method
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Abstract
The variation of extrusion pressure for backward extrusion processes with different punch shapes and lubricants is analyzed in this paper. The process parameters that are varied in experiment are: degree of deformation (three degrees), the punch shape (flat, conical and spherical punch) and the lubricant (zinc stearate and the mixture of zinc stearate and the oil SAE90). The finite volume method is used for calculation of extrusion pressure and the very good agreement with measuring data is obtained.