Temperature is measured during backward can extrusion of steel. The process is characterised by large deformations and very high surface pressure. In the experiments, a can in low carbon steel with a lubrication layer of phosphate soap is formed. The temperature is measured by thermocouples in the die insert. The die insert is divided into two halves where the thermocouples are welded to the end of milled grooves in the lower part. The temperature of the workpiece is measured by welding a thermocouple directly onto the free surface.All of the temperature measurements in the tool and the workpiece are compared with a number of FEM simulations computed with different heat transfer coefficients. The current heat transfer coefficient is determined from the simulations.
|Title of host publication||MM98.04 Measurement of temperature and determination of heat transfer coefficient in backward can extrusion|
|Publication status||Published - 1998|
|Event||1st ESAFORM Conference on Material Forming - Sophia-Antipolis, France|
Duration: 17 Mar 1998 → 20 Mar 1998
|Conference||1st ESAFORM Conference on Material Forming|
|Period||17/03/1998 → 20/03/1998|
Henningsen, P., Hattel, J. H., & Wanheim, T. (1998). MM98.04 Measurement of temperature and determination of heat transfer coefficient in backward can extrusion. In MM98.04 Measurement of temperature and determination of heat transfer coefficient in backward can extrusion