Units for cold cutting out are intended for mechanical cutting out openings in pipelines of DN=150…1200 mm being under pressure of operating medium of up to 6,3 MPa (oil, water,etc.) through shutoff valves established on the side pipe nipple of DN=50, 100, 150, 200, 300 in explosive zones of the class “1” according to GOST 31610, 10-2012.
Tools and devices:
- drills for solid drilling, one piece;
- combined tool, consisting of an annular drill and a central twist drill;
- diameters of drills: d=50 (UKhV-50), d=80, d=100, d=120, d=132, d=150 (UKhV-150), d=170, d=200, d=225, d=230, d=250, d=270, d=300 (UKhV-300);
- special keys of d=36(UKhV-50), d=36, d=50 (UKhV-150), d=80, d=100, d=120, d=132, d=150 (UKhV-300)
| Technical characteristics | UKhV-50 | UKhV-150 | UKhV-300 |
| Maximum pressure in the cut-out pipeline, MPa | 6,3 | 6,3 | 6,3 |
| Rotational speed of the cutting tool, rpm | 33,21 | 49,82 | 49,82 |
| Feeding of the cutting tool, mm /rev. | 0,078 | 0,062 | 0,062 |
| Maximum travel of the tool, mm | 50 | 100 | 120 |
| Time of cutting out of openings, min, no more than | 20 | 40 | 40 |
| Installed capacity, kW, no more than | 1,1 | 2,2 | 3,0 |
| Overall dimensions, mm | 275х666х750 | 1260х670х360 | 1750х785х525 |
| Weight (without electric equipment and adapters), kg, no more than | 60 | 113 | 210 |
| Diameter of the mill, mm | 36 | 36*; 80; 120; 132; 150 | 170; 225; 230; 250; 270; 300; 80*; 120*; 132*; 150* |
* with application of adapters for the cutting tool.
This development is protected by the Russian patent No. 2147975 from 11.03.1999.