Double Screws Twin Parallel Screw Cylinder Plastic Machinery Components

• Customization: Available
• Certification: ISO
• Color: Fixed
• Model NO.: Twin Parallel Screw Barrel
• Customized: Customized
• Standard: National
• Type: Connection
• Material: Alloy Steel
• Parallel Twin Screw and Barrel: PVC Pelletizer Screw and Barrel
• Transport Package: Film Wrapped in Wooden Case
• Specification: ISO9001: 2008
• Trademark: Zhongyang
• Origin: Zhoushan, China
• HS Code: 84779000
• Production Capacity: 150sets/Month

Product Description

Double screws Twin Parallel Screw Cylinder Plastic machinery components, double screw barrel
Specification:
Diameter: Φ 45mm-Φ 200mm
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)4Cr5MoSi V1 (JIS SKD-61)

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

Technics:
Heat treatment
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

Terms and Conditions:
Production time: 30 days
Packing: Film wrapped in wooden case(Export standard)
Trade Terms: FOB, CNF, CIF
Payment Terms: T/T, L/C, West Union
Warranty and service: 1 year

If you don't see the specific type of screw barrel you need here, pls contact us by email or by phone, we will find out solutions according to your requirements within 12 hours.

Main Base materials	1.38CrMoAlA  (Nitriding Steel)
	2.  SKD-61   (Special Tool Steel)
	3.  42CrMo (Ultrahigh Strength   Steel)
	4. DC53 ( Cold Work   Die Steel)
	5. W6Mo5Cr4V2 ( High-Speed   Tool   Steel )
	6. HPT
Main Alloy Materials	1.  Ni-based alloy/Deloro alloy
	2.  Tungsten carbide/Wolfram carbide
	3.  NiCo-based alloy
	4.  Fe-based alloy
	5.  Co-based alloy
Processing Technics	1.  Heat treatment
	2.  Quenching
	3.  Nitriding treatment
	4.  Bimetallic alloy welding
	5.  Bimetallic alloy centrifugal casting
	6.  Hard-chrome electroplating
Technical parameters	Nitriding layer depth	0.5-0.8mm
	Nitrided hardness	HRC56-58
	Nitrided brittleness	Less than grade 1
	Surface roughness	Ra 0.4
	Linearity of screw	0.015mm
	Hard-chrome plating hardness	≥HRC57
	Chrome-plating layer depth	0.03-0.09mm
	Bimetallic layer depth	3 mm
	Bimetallic layer hardness	HRC58-62
Above are main technical information, a suitable screw and barrel will be made according to your requirement.