PVC Twin Extruder Machine Screw Barrel Double Screw

=== 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 Size Customize Material Nitriding Steel Nitrided Layer Depth 0.5-0.8mm Nitrided Hardness HRC56-58 Bimetallic Layer Depth 3mm Bimetallic Layer Hardness HRC58-62 Transport Package Slushing Oil Coated& Film Wrapped in Wooden Case Specification ISO 9001: 2008 approved Trademark ZHONGYANG Origin China HS Code 84779000 Production Capacity 100 Sets/ Month

Product Description

PVC Twin Extruder Machine Screw Barrel

Specification:
Screw diameter: 15mm-300mm
Maximal length: 8000mm
Barrel inner diameter: 15-300mm
Maximal length: 4000mm

Different bimetallic alloys are available for different raw materials.

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)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 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 layer depth: 3mm

Warranty and service: 1 year
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