Abrasion-Resistant White Cast Iron 20 -ASTM A532_A532M

Abrasion-Resistant White Cast Iron 20

-ASTM A532_A532M

 

  1. C. Effects of modification on grain boundary metallurgical quality of high chromium white cast iron

First of all there are many factors that affect the grain boundary metallurgical quality of high chromium white cast iron. Furthermore the content and morphology of inclusions seems like the most influential factors. The analysis results show that the main inclusions are sulfide and oxide or silicate. Which are in the grain boundary of high chromium white cast iron. In addition sulfide and oxide are most sensitive to the mechanical properties.  Furthermore it is not difficult to see from table 11 that SI and S III modifiers significantly reduce oxygen and sulfur content.  Thus seems like significantly reducing the grain boundary inclusions.

 

Especially relevant in table 12 shows the effect of different modifiers on impact value and probably small energy impact value also.

 

Table 11  The effect of modification on sulfur content and oxygen content

Modifier type Amount of addition  % sulfur content  % oxygen content x10-6
SI 0 0.065 84
SI 112 0.035 45
SI 115 0.028 32
S Ⅱ 0 0.08 79
S Ⅲ 110 0.038 47
S Ⅲ 112 0.023 22
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