PTA WELDING PROCESS
ŞENMAK Screws which are covered with PTA Powders improved by our R&D department provides higher wear , corrosion and heat resistance during usage. Higher amount of chromium and carbon powders in the PTA alloys results higher amount of chromium – carbide population that provides wear and heat resistance.
We cover our screw with a minimum 2mm PTA layer, by the way we reach 2-3 times more life time compared with traditional ones.
The 5 main step for PTA process applied in ŞENMAK are as follows;
Welding Groove Opening
PTA Welding
Grinding &
Penetration Test
1) Welding Groove Opening
2) PTA Welding
Screw Milling
Final Inspection &
Penetration Test
3) Grinding & Penetration Test
4) Screw Milling
5) Final Inspections &
Penetration Test
1 - WELDING GROOVE OPENING
2- PTA WLDING
1. Stage: Pre-Heating
2. Stage: PTA Welding
3. Stage:
Layer Check
3- GRINDING & PENETRATION TEST
1. Stage: Grinding
2. Stage:
Penetration Test
4- SCREW MILLING
5- FINAL INSPECTION & PENETRATION TEST
DEFECTIVE PTA WELD Detection by Penetration 1
CRACK IN PTA WELD Detection by Penetration 2
