Applications - Screw hardfacing

 

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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.

Archimedean screwBoth 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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