US1771420A - Method of rolling tubes from hollow blocks - Google Patents
Method of rolling tubes from hollow blocks Download PDFInfo
- Publication number
- US1771420A US1771420A US252376A US25237628A US1771420A US 1771420 A US1771420 A US 1771420A US 252376 A US252376 A US 252376A US 25237628 A US25237628 A US 25237628A US 1771420 A US1771420 A US 1771420A
- Authority
- US
- United States
- Prior art keywords
- rolls
- hollow blocks
- hollow
- rolling tubes
- tubes
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B19/00—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work
- B21B19/12—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work the axes of the rollers being arranged essentially parallel to the axis of the work
- B21B19/14—Rolling tubes by means of additional rollers arranged inside the tubes
Definitions
- Said method has the drawback that slight corrugations and unevenesses in the wall of 29 the tube produced, which sometimes occur by of said slight action of the working part of the rolls thereon, could hitherto not be removed by a working process'directly adjoining the rolling process. It was necessary, for a removal corrugations and unevenesses, to use a separate machine, for instance one a used for rounding and straightening welded tubes.
- the present invention provides improved ⁇ 30 means for overcoming this drawback and pertion, the rolls are widened and, that the how the invention can be put into practice.
- Figs. 1 and 2 illustrate the improved arrangement for practice.
- the reference letters designate: A the main deforming part of the rolls, B the hollow 252,376, and in Germany February 25, 1927.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
Description
July 29,1930. M. ROECKNER METHOD ROLLING TUBES FROM HOLLOW BLOCKS Filed Feb. 6, 1928 a j fnrentvr: v/(m M LKL 1 E LLLL Patented July 29. 1930 UNITED STATES MARTIN ROECKNEB, F MULHEIM-R' U HR,
PATENT OFFICE NIGTE STAH LWERKE AKTIENGESELLSCHAFT, 0F DUSSELDORF, GERMANY METHOD OF ROLIING TUBES FROM HOLLOW BLOCKS Application filed February 6, 1928, Serial No.
It is known, for instance by my prior U. S. Patent 1,610,593,'to make tubes from a hollow block by subjecting the latter to the action of a system of pairs of rolls arranged about the hollow block at a certain distance from its axis, each pair of rolls acting with one roll from inside and With the other roll from outside said block upon the walls of the latter. The pairs of rolls are of gradually increasing width and of adjustable working depth so that from the first pair of rolls a circumferential nick beginning adjacent the front end of the block is cut into the material of the hollow block, which nick is gradually nvidened by the following pairs of rolls to-' Ward said end; the axes of said rolls being inclined to the axis of the hollow block.
Said method has the drawback that slight corrugations and unevenesses in the wall of 29 the tube produced, which sometimes occur by of said slight action of the working part of the rolls thereon, could hitherto not be removed by a working process'directly adjoining the rolling process. It was necessary, for a removal corrugations and unevenesses, to use a separate machine, for instance one a used for rounding and straightening welded tubes.
The present invention provides improved \30 means for overcoming this drawback and pertion, the rolls are widened and, that the how the invention can be put into practice.
Figs. 1 and 2 illustrate the improved arrangement for practice.
The reference letters designate: A the main deforming part of the rolls, B the hollow 252,376, and in Germany February 25, 1927.
block to be rolled, C the outlet extension widening the rolled tube, and D that part imparting a pressure to the tube without deforming the same.
What I claim, is: In a method of rolling tubes from hollow blocks consisting in drawing out the latter. in
substantiallyaxial direction by the utilization of palrs of rolls acting both from inside and outside upon said block and of which the axes are inclined tothe axis of the latter, widening the tube by the same pairs of rolls directly after its formation from the hollow block and subsequently imparting thereto a pressure .without deforming it by outlet extensions of said rolls.
In testimony whereof I have hereunto set my hand. MARTIN ROECKNER.
putting the invention into GERMANY, ASSIGNOR TO THE FTRM OF VEREI-
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1771420X | 1927-02-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US1771420A true US1771420A (en) | 1930-07-29 |
Family
ID=7742578
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US252376A Expired - Lifetime US1771420A (en) | 1927-02-25 | 1928-02-06 | Method of rolling tubes from hollow blocks |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US1771420A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4951490A (en) * | 1988-06-18 | 1990-08-28 | Man Technologie Gmbh | Method for automatically controlling spinning rolls |
-
1928
- 1928-02-06 US US252376A patent/US1771420A/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4951490A (en) * | 1988-06-18 | 1990-08-28 | Man Technologie Gmbh | Method for automatically controlling spinning rolls |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US2214279A (en) | Continuously running rolling mill for producing tubes | |
| US1771420A (en) | Method of rolling tubes from hollow blocks | |
| DE2532710A1 (en) | ROLLING MILL FOR THE PRODUCTION OF SEAMLESS STEEL TUBES | |
| DE747860C (en) | Roller push bench for the production of hollow bodies | |
| DE2338391A1 (en) | PROCESS AND DEVICE FOR MANUFACTURING EXTRUSIONAL ROUND MATERIALS FROM STEEL OR OTHER METALLIC MATERIALS BY HOT FORMING | |
| DE2949970A1 (en) | PLANT FOR THE PRODUCTION OF SEAMLESS METAL TUBES OF LARGE DIAMETER | |
| DE3308782A1 (en) | ROLLING MILL ARRANGEMENT FOR THE PRODUCTION OF SEAMLESS STEEL TUBES | |
| US2204491A (en) | Rolling mill plant for the manufacture of seamless tubes | |
| SU38516A1 (en) | A method of making rolled tubes with internal wall thickenings at the ends | |
| DE743823C (en) | Angled rolling mill for the production of thin-walled seamless tubes in particular | |
| DE648918C (en) | Process for the production of seamless tubes | |
| US1100696A (en) | Apparatus for rolling seamless tubes. | |
| US1767896A (en) | Method of and apparatus for rolling tubes from alpha hollow block | |
| US988834A (en) | Tube-rolling. | |
| DE2131713A1 (en) | Tube rolling mill | |
| DE3833375C1 (en) | ||
| US2215933A (en) | Method of making tubing | |
| US1888607A (en) | Method of making seamless tubes | |
| US1898779A (en) | Method of rolling tubes with internally thickened ends | |
| DE462532C (en) | Tube rolling mill | |
| AT141819B (en) | Process and drawing bench for the production of seamless tubes. | |
| US870246A (en) | Method of making seamless tubing. | |
| DE735468C (en) | Process for the production of seamless tubes | |
| US3577756A (en) | Two-pass weld bead finishing process for pipe and tubing | |
| SU230761A1 (en) | Method of making reduced pipes |