Imported steel Twin Screw Barrel

Product Specification and technical data
�65��80��90��105��125��146�
�150��170��180��190��200�
Hardness of quenching and tempering�HB240°�280°
Hardness of nitration�HV850°�1000°
Depth of Nitrated Layer�0.45�0.7mm
Fragility of nitration�� Grade 2
Surface roughness �Ra0.4
straightness�0.015mm
Hardness of Cr-coating Layer�HV�900HV
Nitrided layer thickness�0.05�0.10mm
Thickness of Cr-coated Layer�0.8�2.0mm
Hardness of bimetallic alloy �HRC56°�65°�Ni-based alloy�
material :quality alloy steel
� 38CrMoALA(JIS SACM645)
� 42CMo(JIS SCM440)
� 9Cr18MoV
� CW6Mo5Cr4V2
Heat-treatment�
Nitriding treatment
Electroplated hard-chrome finish
High-frequency quenching
Spray coating Bimetallic-alloy
vacuum quenching