high quality conical twin screw and barrel manufacturer

high quality conical twin screw and barrel manufacturer

Specification:
45/90, 45/100, 50/105, 51/105, 55/110, 55/120, 58/124, 60/125, 65/120, 65/132, 68/143, 70/135, 70/140, 75/150, 80/143, 80/156, 92/188
Cincinnati, Krauss Maffei, Weber, Battenfeld, Amut designs available.

Screw structure and compression ratio can be designed according to different products and parts. 

base Materials:

1)38CrMoAlA(JIS SACM645)                        

2)42CrMo(AISI 4140)

3)Cr12MoV(JIS SKD-11)

4)4Cr5MoSiV1(JIS-SKD61)

5)9Cr18MoV

Bimetallic alloy materials:

1)Fe-based alloy

2)Ni-based alloy/Deloro alloy

3)Co-based alloy

4)NiCo-based alloy

5)Tungsten carbide/Wolfram carbide                                  

Technics:

Heat treatment

High-frequency quenching
Nitriding treatment

Hard-chrome electroplating

Bimetallic alloy welding

Bimetallic alloy centrifugal casting
 

Technical parameter:

Nitrided layer depth:0.5-0.8mm

Nitrided hardness:900-1000HV

Nitrided brittleness: Less than grade 2

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 layer depth:3-5mm

Bimetallic hardness:HRC50-65

We always adopt high-quality materials, provide best quality, perfect service, prompt delivery  and very competitive price for you. Hope we can cooperate with you. Thank you!