FIELD: process engineering.
SUBSTANCE: invention relates to metal forming, namely to disk mill mandrel. Proposed mandrel features variable cross section with holes. Said holes are made in mandrel rear part radially or, inclined, on back taper section. Said holes are arranged all around the mandrel. The number of holes and their diametres are selected to satisfy the condition that total area of holes cross section does not exceed area of inner section of the pipe feeding cooling fluid inside mandrel.
EFFECT: higher quality of inner surface of barrels, hence, that of pipes.
1 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| SCREW ROLLING MILL MANDREL ASSEMBLY | 2011 |
|
RU2477186C2 |
| MANDREL ASSEMBLY OF SCREW ROLLING MILL | 2017 |
|
RU2650218C1 |
| PIERCING MILL MANDREL | 1992 |
|
RU2037350C1 |
| COOLED MANDREL OF ROTARY MILL AND METHOD OF ITS COOLING | 2014 |
|
RU2568805C1 |
| PIERCING MILL MANDREL | 1992 |
|
RU2021045C1 |
| SCREW ROLLING MILL MANDREL ASSEMBLY | 2012 |
|
RU2497613C1 |
| TECHNOLOGICAL TOOL FOR SKEW-ROLL PIERCER | 0 |
|
SU749469A1 |
| PIERCER MANDREL | 0 |
|
SU820939A1 |
| WATER-COOLED MANDREL OF THE PIERCING MILL | 2017 |
|
RU2649598C1 |
| DISK MILL MANDREL | 2014 |
|
RU2587702C1 |
