UA82971C2 - Method of continuous plugless longitudinal pipe rolling in multi-stand mill - Google Patents
Method of continuous plugless longitudinal pipe rolling in multi-stand millInfo
- Publication number
- UA82971C2 UA82971C2 UAA200709408A UAA200709408A UA82971C2 UA 82971 C2 UA82971 C2 UA 82971C2 UA A200709408 A UAA200709408 A UA A200709408A UA A200709408 A UAA200709408 A UA A200709408A UA 82971 C2 UA82971 C2 UA 82971C2
- Authority
- UA
- Ukraine
- Prior art keywords
- stand
- mill
- current number
- roll opening
- billet
- Prior art date
Links
Landscapes
- Control Of Metal Rolling (AREA)
Abstract
The invention relates to the methods for producing the seamless and welded pipes on reducing and sizing mills. A method of continuous plugless longitudinal pipe rolling in multi-stand mill includes deformation of billet in several consecutive roll openings formed by driven rollers. The angular velocity of roller in each-th stand of mill is determined in accordance with the relationship:,where- angular rate of rotation of rollers in the stand with current number, radian per second;- rate of billet at mill inlet, m/s;- thickness of the wall of billet at mill inlet, m;- diameter of billet at mill inlet, m;- thickness of the wall of pipe at outlet from previous-th stand, m;- average diameter of roll opening in the previous stand with current number, m;- thickness of the wall of pipe at outlet from the stand with current number, m;- average diameter of roll opening in the stand with current number, m;- ideal diameter of rollers in the stand with current number;- instantaneous value of radius of roll opening in-th stand of mill set in the form of the law of variation of the radius of roll opening along its perimeter, m;- instantaneous value of the radius of roll opening in-th stand of mill at, m;- angle between radiusand line, which penetrates the center of roll opening and its apex, radian;- angle of neutral intersection in the stand with current number, radian;= 1, 2, ... ,- 1,- ordinal number of stand assuming as= 1 first stand in the direction of rolling;N - total quantity of stands in multi-stand mill of continuous plugless pipe rolling;=– 1.The invention makes it possible to decrease the divergence between real and assigned nominal thickness of the wall of finished pipes by 33%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| UAA200709408A UA82971C2 (en) | 2007-08-20 | 2007-08-20 | Method of continuous plugless longitudinal pipe rolling in multi-stand mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| UAA200709408A UA82971C2 (en) | 2007-08-20 | 2007-08-20 | Method of continuous plugless longitudinal pipe rolling in multi-stand mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| UA82971C2 true UA82971C2 (en) | 2008-05-26 |
Family
ID=39819324
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| UAA200709408A UA82971C2 (en) | 2007-08-20 | 2007-08-20 | Method of continuous plugless longitudinal pipe rolling in multi-stand mill |
Country Status (1)
| Country | Link |
|---|---|
| UA (1) | UA82971C2 (en) |
-
2007
- 2007-08-20 UA UAA200709408A patent/UA82971C2/en unknown
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103372567B (en) | A kind of method of cold continuous rolling production texturing surface ferrite stainless steel band | |
| CN104874606B (en) | The production method of high chromium content ferrite stainless steel seamless steel pipe | |
| TW200709866A (en) | Method for manufacturing very thin wall seamless metal pipe by cold-rolling | |
| CN101327492A (en) | Process and system for manufacturing hot-rolled seamless tube | |
| EP1479457A4 (en) | Method of manufacturing seamless steel pipe | |
| CN104475453B (en) | A kind of tandem rolling roll seamless steel tube technique and device | |
| DE59809767D1 (en) | Method and device for avoiding or reducing trumpet-shaped widenings at the tube end when cross-rolling thin-walled tubes | |
| UA85550C2 (en) | method for processing steel product, method for producing steel product and product manufactured by said method | |
| CN106825106A (en) | The technique of thin-walled hot rolled seamless steel tube in a kind of double-core axle two-roller skew-rolling production | |
| CN101954377A (en) | Full-floating mandrel tandem-rolling seamless steel pipe production process | |
| CN102009069A (en) | Manufacturing process of small-caliber hot rolling seamless steel tubes | |
| AU3031200A (en) | Method of producing round billets | |
| UA82971C2 (en) | Method of continuous plugless longitudinal pipe rolling in multi-stand mill | |
| CN103191922A (en) | Four-roll sizing and reducing mill | |
| CN203750993U (en) | Integrated inclined and longitudinal rolling anchor rod rolling mill | |
| EA200802416A1 (en) | A ROLLED MILL WITH A SUPPORTED MOTOR, INTENDED FOR SEAMLESS PIPES | |
| CN104550263B (en) | Pass design method for producing seamless steel tubes by utilizing five-rack continuous rolling mill | |
| MY168686A (en) | Method for producing seamless hot-rolled pipes in continuous pipe rolling mills | |
| MX2008001622A (en) | Method of continuously rolling a product exiting from an upstream roll stand at a velocity higher than the take in velocity of a downstream roll stand. | |
| CN203170701U (en) | Four-roll type sizing-sinking mill | |
| CN205673363U (en) | Big H profile steel mm finishing mill unit and heavy H-steel rolling mill system | |
| CN101468360B (en) | Seamless oil well steel tube restraint tandem rolling processing equipment | |
| CN205762954U (en) | Big H profile steel mm finishing mill unit and heavy H-steel rolling mill system | |
| CN201261025Y (en) | Special-purpose equipment for seamless oil well steel tube restraint tandem rolling processing | |
| CN104148390A (en) | Process and equipment for stretch-reducing hot rolling of hollow anchor rods |