Double Screw and Barrel Parallel Twin Screw and Barrel

=== Base Info ===

=== Description ===

Basic Info.

Model NO. ZYSCREW Assembly Structure Separate Type Extruder Screw Twin-Screw Engagement System Full Intermeshing Screw Channel Structure Deep Screw Exhaust Don′t Exhaust Automation Automatic Computerized Computerized 48mm Double Screw and Barrel Bimetallic Abrasion Resistant Nitrided Layer Depth 0.5-0.8mm Nitrided Hardness 900-1000hv Nitrided Brittleness Less Than Grade 1 Transport Package Slushing Oil Coated& Film Wrapped in Wooden Case Specification ISO 9001: 2008 approved Trademark Zhongyang Origin Zhoushan, China HS Code 84779000 Production Capacity 100 Sets/Month

Product Description

ZY is a professional and experienced manufacturer/producers of all types of screws and barrels for plastic machinery.

Pls find the detailed info. For parallel twin screw and barrel as below:

Specification:
Diameter: Φ45mm-Φ200mm
L/D ratio: 16-35
The compression ratio of screws can be designed according to different products and ingredients

Base Materials:
(1)38CrMoAlA(JIS SACM645)
(2)42CrMo(AISI 4140)
(3)9Cr18MOV

Bimetallic alloy materials:
(1)Fe-based alloy
(2)Ni-based alloy/Deloro alloy
(3)Tungsten carbide/Wolfram carbide

Technics:
Heat treatment
Nitriding treatment
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 1
Surface roughness: Ra0.4
Linearity of screw: 0.015mm
Bimetallic layer depth: 3mm