334 Prakt. Met. Sonderband 38 (2006) 
3.2 SEM (SCANNING ELECTRON MICROSCOP) INSPECTION the 
thr 
On the tip of the most damaged teeth plastic deformed substrate material regions were sul 
found and also transfer material (Fig. 7). The EDAX-Analyses detected zinc (Zn) in the fro 
bright-looking areas viewed in the BSE-modus. The titanium peak comes from the surface ori 
beyond the bright-looking area (Fig. 8, Fig. 9 and Fig. 10). These described indications on 
were found on the third and fourth teeth. The other teeth of the molding tool showed no 
surface damage due to the molding process. Little injuries could be detected on the 
surface layer of the non damaged teeth. This surface condition correspond to the original, 
unused state of the molding tool. Qualitatively this described surface condition is the same 
for all of the used tools. The inflected area is increasing according to the run-time. 
"Prob- iRo1+ 
Fig. 7: tip of the most damaged teeth; Fig. 8: EDX-Analyses 
BSE-picture 
4 200 5 00 4.00 50- v.00 7.00 3.00 1.00 2.00 3.00 4.0n 5.00 6.00 7.00 8.00 keV i ni 
Fig. 9: EDAX-Analyses of a Fig. 10: EDAX-Analyses of a x 
bright-looking area dark-looking area N 
3.3 METALLOGRAPHIC INSPECTION 
To match the interested plane, which goes through the damaged area of the tip of the 
molding tool, the preparation was done in layers. That means that the polish was 
investigated in different depths of grinding. Before the polish surface matches the middle 
of the molding tool cracks below the coating surface (looking gold-like coloured in the 
metallographic slides), with an orientation nearly parallel to the surface were detected on