enden example of a steel melt it could thus be shown that small, non-metallic inclusions up to a 
;t sich size of 20 um are distributed to a large extent uniformly over the total melt. It has to be 
hl der reckoned, however, also with the presence of individual larger slags. Their distribution is not 
; 2020 uniform and can very well be missed in a random sampling of the melt. Investigations on 
nimmt samples that are distributed over the total melt are well suited to give to the metallurgist 
ehr die important informations over the kinetics of slag formation in the melt. It is of great 
advantage for further evaluations, if the magnitude of the quantitatively with certainty 
ich die visible features is about 1 um. The first test results, about which the present report deals, 
längste have to be secured and made reproducible through further systematic investigations. It is, 
nd die however, beyond any doubt that the apparatuses developed in the last time for the 
werden quantitative electronic image analysis meet all necessary requirements. 
ß eines 
für die 
ntualer 
eilungs- 
igneten Tabelle 1. Verteilung der nichtmetallischen Einschlüsse 
el einer auf die einzelnen Längenklassen 
r Größe 
jedoch Längenklasse Anzahl der 
n. Ihre (um) nichtmetallischen 
nweisen Einschlüsse 
e ganze 
; für die gesamt zn = 27999 . 
ingen ist 
erkmale < 5 20 865 74,5 
Aufsatz > 5<10 4 338 15,5 
werden. >10 < 15 1 365 4,9 
räte zur >15<20 635 25 
;tzungen >20 <25 395 1,2 
>25 < 30 168 0,6 
>30 <35 84 0,3 
>35 s< 40 55 0.2 
>40 < 45 So 0.2 
>45 s< 50 2 0,1 
>50 s<55 15 0,1 
>55 < 60 14 0,1 
zent area >60 < 65 9 0,1 
makes it >65< 70 Z 0,1 
e present >7C . 0,1 
% 
100 
h 30 
313