Bimetallic Screw

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.

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.

Application

General plastics & engineering plastics with below 20% glass fibre filling.

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Description
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Technical Parameters

Product Name	Bimetallic Screw
Material	JYN1 + JYS Series Alloy
Suitable Machine	Injection / Extrusion / Blowing
Available Size	Φ14-400mm, Length <8,000mm
Process Method	PTA Spray
Surface Hardness	46-58 HRC
Surface Roughness	< Ra 0.8
Screw Straightness	< 0.02mm/m

JYS Series Alloy

At this stage, we have JYS-1, JYS-2 and JYS-3 alloy types and treatments for wear fighting.

TYPE	ALLOY COMPONENTS	HARDNESS(HRC)	ABRASION RESISTANCE	CORROSION RESISTANCES	APPLICATIONS
JYS-1, B	Ni,Cr, Si	52-56	x	x	Recycling & engineering plastics.
JYS-2, A	Ni, Cr,W	54- 58	xx	x	Engineering plastics, reinforced additives less than 20%.
JYS-3, D	Co, Cr,W	44-48	x	XX	Reinforced additives and corrosive plastics less than 15%.