PTA applications - Screw Hardfacing

Extrusion screw Hardfacing - Plastics

PTA 5091 Plasma Team equipments are well tailored to automatic hardfacing by PLASMA TRANSFERRED ARC process, as well as by the up-to-date Semi Transferred Arc technique.

Both are the best economic and technical solution for the application case history of Archimedean SCREWS for plastics, owing to the following characteristics:

Characteristic	Features
Welding Parameters	Real time setting and control
Deposit Penetration & Dilution	Very small and controllable
Process Efficiency	Constant for all pieces
Hardfacing Time	Very short
Welding Alloy	Wide range of metallic alloys
Maintenance in Working conditions	Very limited
Service Life of Wear Part	Prolonged and reliable


	Characteristic Table

Hardfacing Example	Technical Data
Base Material	Steel for screws
Hardfacing Alloy	Cobalt base : 50 - 60 HRC Nickel base : 50 -60 HRC Iron base : 50 - 60 HRC
Powder Grain Size	75 - 150 µm
Welding Speed	20 - 80 cm/min
Deposit Hardness	50 - 60 HRC
PLASMA TEAM equipments	PTA 5000 - PTA 4000


	Hardfacing Example




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