Customize Rubber Screw Barrel Rubber Screws

  • Price:

    Negotiable

  • minimum:

  • Total supply:

  • Delivery term:

    The date of payment from buyers deliver within days

  • seat:

    Zhejiang

  • Validity to:

    Long-term effective

  • Last update:

    2017-12-10 04:07

  • Browse the number:

    263

Send an inquiries

Company Profile

Zhejiang Zhongyang Screw Manufacturing Co., Ltd.

By certification [File Integrity]

Contact:Miss Sunny(Mr.)  

Email:

Telephone:

Area:Zhejiang

Address:Zhejiang

Website: http://zyscrew.qzxjb.com/

Product details
Rubber Screw barrel, rubber extrusion screw barrel, plastic machinery screw barrel, pins cylinder for rubber machinery

Specification:
Diameter of pin screw and barrel: Φ 75mm-Φ 200mm
Diameter of cold feed or hot feed screw and barrel: Φ 30mm-Φ 300 mm
L/D ratio: 12-18

Technical Information

Base Materials:
1)38CrMoAlA(JIS SACM645)
2)42CrMo(AISI 4140)
3)4Cr5MoSi V1 (JIS SKD-61)
4)9Cr18MOV
5)HPT

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

Our advantages:
1)Excellent raw materials
2)Good customer service
3)Rapid delivery
4)Reasonable price
5)Production quickly

Experienced manufacture, we will be the best choice.
Type Model Hardness
(HRC)
Wear resistant Corrosion resistant Thickness Application
Glass Fiber
PTA weld ZB1 38CrMoAlA
Ni-base alloy
45-58 Excellent Special excellent 1.5~3mm Under 10%
ZB2 SKD61
Ni-base alloy
45-58 Special excellent Excellent 1.5~3mm Under 15%
Nitriding Nitrided HV more than 800 Good Good 0.25mm /

Types of Bimetallic Screw


For barrels, there are 4 kinds of bimetallic alloys against all types of wear:
Alloy Type EJS01 Alloy EJS02 Alloy EJS03 Alloy EJS04 Alloy
Wear resistance Very good Good Very good Excellent
Corrosion resistance Good Very good Very good Very good
Alloy components Fe+Ni+Cr+B Ni+Cr+Co+B Ni+Cr+Co+V+B Ni+Cr+Wc+Co+B
Hardness (HRC) 58~64 50~58 55~60 56~62
Temperature area (°C) less than 400 less 450 less than 450 less than 600
Coefficient thermal RT-250°C 11.0 x 10 -6 11.0 x 10 -6 11.5 x 10 -6 11 x 10 -6
Expansion (/°C) RT-400°C 11.4 x 10 -6 11.4 x 10 -6 12.4 x 10 -6 12 x 10 -6