Single screw barrel for plastic extruder
Specification:
Diameter: ?15- ?300
L/D ratio:15-50
Material:
High quality alloy steel
1)38CrMoAlA(JIS SACM645)
2) 42CrMo(AISI 4140)
3)Cr12MoV(JIS SKD-11)
Technics:
1) Heat treatment
2) Nitriding treatment
3) Hard-chrome electroplating
4) Bimetallic alloy welding
Technical parameter:
|
Nitrided layer depth
|
0.5-0.8mm
|
|
Nitrided hardness
|
900-1000HV
|
|
Nitrided brittleness
|
Less than grade 1
|
|
Surface roughness
|
Ra0.4
|
|
Linearity of screw
|
0.015mm
|
|
Hard-chrome plating hardness
|
≥950HV
|
|
Chrome-plating layer depth
|
0.025-0.085mm
|
|
Bimetallic layer depth
|
3-5mm
|