By use of the method of finite elements, the three steps uniaxial die pressing of a solid cylinder, green machining, and the sintering of a ceramic housing of a flow meter are modelled. The material laws that describe the compacting and thefriction behaviour of the powder, and the sintering behaviour, respectively, are determined experimentally for an Al{sub}2O{sub}3 +10% ZrO{sub}2 dispersion ceramic and a ZrO{sub}2 ceramic. Three steps are investigated:* Uniaxial pressing and the resulting density gradients* Machining in the green state by removing the areas with the highest density gradients* Sintering that is modelled with the grain boundary diffusion considered to be the dominant mechanism for the shrinkage.Using the density distribution of the green part as input, the stresses in the body as well as shrinkage rates and shape distortions after completion of the sintering process are evaluated.
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