Conical Set
The twin conical barrel and twin conical screw parts are the most technologically complex to produce.
We have the technical know-how productive to provide twin conical barrel made in design or sample, coupled to the conical twin-screw that could be new or regenerated
Mainly used in PVC and W-PVC profile extrusion, we are able to recommend the best combination of steel and coating to reduce the corrosion and the abrasion.
| Manufacture of the screws | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Denomination | C | Si | Mn | P | S | Al | Cr | Mo | Ni | V | W |
| EUV 31 | 0,34 | 0,70 | 0,40 max | 0,025 max | 0,30 max | - | 2,70 | 0,25 | 0,20 | - |
| Coating on screws | ||
|---|---|---|
| Alloy | Denomination | Hardness |
| Iron Base | EUV 5 | 58 - 60 HRC |
| Nickel Base | EUV 56 | 52 - 56 HRC |
| Nickel Base ( Tungsten carbide ) | EUV 850 | 67 - 69 HRC |
| Molibdeno | EUV 700 | 59 - 60 HRC |
| Screw coatings | |
|---|---|
| Method of coating | Material |
| HVOF | WC-Co-Cr ( Ceramic ) |
| HVOF | WC-Co ( Tungsten carbide ) |
| Galvanic chrome plating | Cr |
| Manufacture of the barrel | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Denomination | C | Si | Mn | P | S | Al | Cr | Mo | Ni | V | W |
| EUV 34 | 0,37 | 0,40 | 0,70 | 0,025 | 0,030 | 1,20 | 1,80 | 0,25 | 1,50 | - | - |
| EUV 41 | 0,45 | 0,50 | 0,80 | 0,030 | 0,035 | 0,80 | 1,80 | 0,40 |
