Question
Download Solution PDFWhich of the following materials is used in the manufacture of extrusion nozzles?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDF- White cast iron is used for the manufacturing of the extrusion nozzles.
- Cast irons typically contain 2 - 4 wt % of carbon with a high silicon concentration and a greater concentration of impurities than steels. Carbon is present in the form of graphite in grey cast iron and in the form of combined cementite in white cast iron.
- A high cooling rate and a low carbon equivalent favors the formation of white cast iron whereas a low cooling rate or a high carbon equivalent promotes grey cast iron.
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