Audited Supplier
ZYSCREW
Yes
12 Months
GB
Alloy Steel
Rubber Raw Material Machinery
ISO
New
Customized
Automatic
Horizontal
General Rubber Machinery
Rubber Extruder
Rubber Regeneration Machinery
Zhongyang
Wooden Case
ISO9001: 2008
Zhoushan
84779000
Product Description
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 |
