Specifications:
Screw diameter: Ø15-Ø360
L/D=15-45
Screw structure and compression ratio can be designed according to different products and raw material.
Material
1) 38CrMoAlA(JIS SACM645)
2) Cr12MOV(JIS SKD-11)
3) 4Cr5MoSiV1(JIS SKD-61)
4) 42CrMo(AISI 4140)
5)40Cr
6)9Cr18MOV
Surface Treatment
1) Heat Treatment
2) High Frequency Treatment
3) Nitriding treatment
4) Hard Chrome Plating treatment
5) alloy plating treatment
Screw type: common type, gradual type,sudden type,barrier type,pinned type,exhaustive type,separate type,granulation type,wave type.
