Screw Barrel for Plastic Extruder

ZHONGYANG SCREW is one of the most history and famous screw barrel brand in China. We have professional and experienced teams in every department of our company. We think professional, quality and service is the basic of business. If you want reliable and helpful screw barrel, we will be your best choice! Please kindly find our detailed information as following:

Extruder single screw barrel specification:
Diameter: Φ 10mm-Φ 350mm
L/D ratio: 10-50
According to different material and products, the screw barrel can be chosen from:
General type, Barrier type, Separated type, Vented type, Groove type, Pin type, etc.
According to different material and products to design different screw compression ratio and L/D ratio.

Technical information:
Base materials:
1)38CrMoAlA (JIS SACM645)
2)42CrMo (AISI 4140)
3)4Cr5MoSi V1 (JIS SKD-61)
4)DC53 (JIS G4404)
5)Cr12MoV (SKD11)
6)9Cr18MoV
Bimetallic alloy materials:
1)Ni-based alloy/Deloro alloy
2)Fe-based alloy
3)Co-based alloy
4)NiCo-based alloy
5)Tungsten carbide/Wolfram carbide
Processing technics:
Heat treatment
High-frequency quenching
Nitriding treatment
Bimetallic alloy welding
Bimetallic alloy centrifugal casting
Hard-chrome electroplating
Technical parameters:
Nitriding layer depth: 0.5-0.8mm
Nitrided Hardness: 900-1000HV (HRC 55-65)
Nitrided brittleness: Less than grade 1
Surface roughness: Ra 0.4
Linearity of screw: 0.015mm
Bimetallic layer depth: 3 mm
Bimetallic layer hardness: HRC 55-70
Hard-chrome plating hardness after nitriding: ≥ 950HV
Chrome-plating layer depth: 0.03-0.1mm

Terms and Conditions:
Means of transport: Ocean, Air, Express
Production time: About 20-30 days after we receive the advanced payment

Production Process:
Receiving orders - Designing & Drawing confirmation - Blanking Thermal refining - Heat treatment - Rough Turning - Polishing - Drilling for barrel - Semi Finishing Machining - Bimetallic welding - Centrifugal casting for barrel - Polishing - Nitriding treatment(120 hours) or High frequency quenching - Hard-chrome plating - O. D. Grinding - Honing for barrel - Alignment - Polishing - Inspecting - Packing & Shipping

ZHONGYANG SCREW's advantage:
First-class designing and researching team;
High quality and durable products of screw barrel;
Most professional sales who can serve for you timely;
Best customer service especially after-sale service;
Powerful company's strength support long-term cooperation.

Welcome to contact us.