Bimetallic Screw for Plastic with Less 30% Reinforced Additives DW-S1
DW-S1 Bimetallic Screw for Plastic with Less 30% Reinforced Additives
PTA (Plasma Transferred Arc) automatic alloy spaying is a newly applied technology, especially for precise requirement of screws. Comparing to traditional manual alloy spraying, PTA has better performance with the stability and outlook of screws.
PTA bimetallic double-alloy screw barrel is a kind of auxiliary equipment for plastic processing machinery. It is used to extrude or inject plastic materials. Compared with ordinary screw barrels, double-alloy screw barrels have better wear resistance, corrosion resistance, and heat resistance, which greatly improve the lifespan and production efficiency of plastic processing machinery.
PTA bimetallic double-alloy screw barrel is composed of two parts: the inner core and the outer jacket. The inner core is made of high-performance alloy steel, which can resist high-temperature and high-pressure environments and maintain long-term wear resistance. The outer jacket is made of special alloy materials, making it more resistant to corrosion and chemical erosion.
Technical Parameters
Product Name : Bimetallic Screw
Material : JYN1 + DW-S1 Series Alloy
Suitable Machine: Injection / Extrusion / Blowing ...
Available Size: Φ14-400mm, Length <8,000mm
Process Method: PTA Spray
Surface Hardness:52-56 HRC
Surface Roughness: < Ra 0.8
Screw Straightness: < 0.02mm/m
Advantages
By spraying high quality alloy powder on screw flight with layer thickness 1.5-2.0mm, screws can get higher performance in both wearing & corrosion resistant performance.
Applications
General plastics & engineering plastics with below 30% glass fibre filling.
Comparison of DW-S Series Alloy
At this stage, we have DW-S1, DW-S2 and DW-S3 alloy types and treatments for wear fighting.
|
Type |
Alloy Components |
Hardness (HRC) |
Abrasion Resistance |
Corrosion Resistance |
Application |
|
DW-S1 |
Ni. Cr, Si |
52– 56 |
x |
x |
Recycling & engineering plastics with less than 30% reinforced additives. |
|
DW-S2 |
Ni, Cr, W |
54– 58 |
xx |
x |
Engineering plastics, reinforced additives less than 50%. |
|
DW-S3 |
Co, Cr, W |
44 – 48 |
x |
xx |
Reinforced additives and corrosive plastics less than 20%. |
Suitability: (x good) to (xxx excellent)
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