Which material treatment?
Which material treatment?
(OP)
what kind of material treatment would you recommend for a extrudor screw
http:/ /www.extru der-screw. com/wp-con tent/uploa ds/2010/08 /extruder- screws.jpg
if it has to serve bakelite (basically plastics reinforced with glass fibre - very abrasive)? the material is standard 42CrMo4 (AISI 4142, quenched and tempered to 30HRC hardness). it is then nitrided (don't know exact hardness, but standard procedure), but the thin layer supposedly wears off quite fast.
we would prefer not to use X38CrMoV51 (AISI H11, UTOP Mo1), as it is prohibitely expensive for the application.
any ideas, suggestions?
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if it has to serve bakelite (basically plastics reinforced with glass fibre - very abrasive)? the material is standard 42CrMo4 (AISI 4142, quenched and tempered to 30HRC hardness). it is then nitrided (don't know exact hardness, but standard procedure), but the thin layer supposedly wears off quite fast.
we would prefer not to use X38CrMoV51 (AISI H11, UTOP Mo1), as it is prohibitely expensive for the application.
any ideas, suggestions?





RE: Which material treatment?
Your picture does not provide any scale perspective. How long is one of these screws?
Note: this is a suggestion without any real experience in abrasive wear to back it up. People who build loaders and mining equipment should have knowledge regarding cost effective abrasion resistant steels.
RE: Which material treatment?