We repair screws in following variants:
Materials EXTRA and EXTREMwere specially designed for welding on extrusion and injection screws.
• armouring of the upper part of the screw flight by using STELIT weld overlay – suitable for extrusion of clean materials
| Diameter in mm | Lenght (max.) in mm | Weld thickness in mm | Hardness |
20 ÷ 750 | 6000 | 1,5 ÷ 2,5 | 40 ÷ 50 HRC |
• armouring of the upper part of the screw flight by using STANDARD weld overlay
| Diameter in mm | Lenght (max.) in mm | Weld thickness in mm | Hardness |
20 ÷ 750 | 6000 | 1,5 ÷ 2,5 | 900 ÷ 1000 HV |
• armouring of the upper part of the screw flight by using EXTRA weld overlay
| Diameter in mm | Lenght (max.) in mm | Weld thickness in mm | Hardness |
20 ÷ 750 | 6000 | 1,5 ÷ 2,5 | 50 ÷ 57 HRC |
• armouring of the upper part of the screw flight by using EXTREM weld overlay, armoured layer contains tungsten carbide grains of high hardness up to 2400 HV (30 % - 40 % in a welded on layer)
| Diameter in mm | Lenght (max.) in mm | Weld thickness in mm | Hardness |
40 ÷ 750 | 6000 | 1,5 ÷ 2,5 | 50 ÷ 62 HRC |
armouring of the upper part of the screw flight
armouring of the upper part and compressive edge of the screw flight
armouring the entire surface of the screw
