Rubber screw and barrel
Pin Screw and Barrel Specification: ?75mm~?200mm
Cold/Heat Feed Screw Specification: ?65mm~?650mm
Cold/Heat Feed Screw Specification: ?65mm~?650mm
Material:
High quality alloy steel
1) 38CrMoAlA(JIS SACM645)
2) 42CrMo(AISI 4140)
3) Cr12MoV(JIS SKD-11)
4) 4Cr5MoSiVL(JIS-61)
5) 9Cr18MoV
Technics:
Heat treatment
Nitriding treatment
Hard-chrome electroplating
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 after nitriding:≥950HV
Chrome-plating layer depth:0.025-0.085mm
Bimetallic hardness:HRC50-65
Bimetallic layer depth:3-5mm
We always adopt high-quality materials, provide best quality, perfect service,
prompt delivery and very competitive price for you.
prompt delivery and very competitive price for you.
Hope we can cooperate with you. Thank you!