ES319041A1 - Production of seamless tubes - Google Patents
Production of seamless tubesInfo
- Publication number
- ES319041A1 ES319041A1 ES0319041A ES319041A ES319041A1 ES 319041 A1 ES319041 A1 ES 319041A1 ES 0319041 A ES0319041 A ES 0319041A ES 319041 A ES319041 A ES 319041A ES 319041 A1 ES319041 A1 ES 319041A1
- Authority
- ES
- Spain
- Prior art keywords
- mandrel
- rolls
- bloom
- rolled
- piston
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B21/00—Pilgrim-step tube-rolling, i.e. pilger mills
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B17/00—Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling
- B21B17/02—Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling with mandrel, i.e. the mandrel rod contacts the rolled tube over the rod length
- B21B17/04—Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling with mandrel, i.e. the mandrel rod contacts the rolled tube over the rod length in a continuous process
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
- B21C1/16—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes
- B21C1/22—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes specially adapted for making tubular articles
- B21C1/24—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes specially adapted for making tubular articles by means of mandrels
- B21C1/26—Push-bench drawing
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolls And Other Rotary Bodies (AREA)
- Forging (AREA)
- Metal Rolling (AREA)
Abstract
In a pilger rolling mill for producing seamless tubes, the hollow metal body to be rolled is pressed on to the mandrel prior to the insertion of the body between the rolls, and automatic means are provided for withdrawing the mandrel and body out of the rolls during the pointing operation, and for returning the mandrel and body to the rolls just before the impact points of the rolls face each other, the automatic means being arranged to be controlled in synchronism with the rotary movement of the roller. A hot bloom 1, Fig. 10, coming from a piercing mill rolls on to the table of a press 2, where a previously lubricated mandrel 3 is inserted by a device 4, is compressed by dies 9 of the press on to the mandrel, the bloom and mandrel are lifted by a crane 13 and dropped into a mandrel holder 14 and a stripper ring 15, rams 22 feed the mandrel carriage 21, mandrel 3, and bloom 1, towards pilger rolls 34, where the bloom is first pointed, and then rolled into a tube 44. Rams 22 now withdraw carriage 21 until the mandrel lies over a table 47, the mandrel is released, table 47 moves the mandrel sideways, which is then transported backwards by a means 48 to a cooling grid, and then plunged into a trough 49. The forward end of the bloom may be pressed on to the mandrel by dies (5), Fig. 2 (not shown), or the rear end may be pressed by dies (9), Fig. 8 (not shown). In a modification, four die rolls (10), Fig. 11 (not shown), compress the forward end of the bloom, or bloom 1 may be rolled completely by four rolls. In a still further modification, three roller stands 12 are provided, Fig. 13. Coolant passes through a duct 17 in the mandrel, Fig. 9, and returns to an outlet 19 through an annular passage 18. The mandrel holder 14 is mounted on a splined bar 20 which passes through a rotating device 31 and is connected to a fluid piston 32 of carriage 21, Figs. 3 and 4. Liquid under pressure, which may also be the coolant, passes through a central bore in piston 32 and bar 20, through oblique bores 24, Fig. 9, into a chamber 25, and actuates a pin 26 which projects into the bore of the mandrel and locks the latter. A control box 35 supplies air to either side of piston 32, and a dash pot brake 36 is provided for stopping the feed at the correct position. In a modification, piston 36 is actuated during the pointing period by gas pressure creased by the ignition of an explosive mixture. On retraction, the bloom and mandrel are rotated through 90 degrees by device 31 or the angle may be varied if a hexagonal tube is being rolled. Rolls 34 are driven through gear 38, Fig. 10, connected to a motor 39, and a rotating disc 40 having apertures which permit light to actuate photo-cells 43, control valve control box 35, and rotating device 31, synchronously with rolls 34. A roller 34a is provided for determining the axial position of the bloom during pointing.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
LU47183A LU47183A1 (en) | 1964-10-21 | 1964-10-21 |
Publications (1)
Publication Number | Publication Date |
---|---|
ES319041A1 true ES319041A1 (en) | 1966-05-01 |
Family
ID=19724000
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES0319041A Expired ES319041A1 (en) | 1964-10-21 | 1965-10-21 | Production of seamless tubes |
Country Status (7)
Country | Link |
---|---|
BE (1) | BE671238A (en) |
CS (1) | CS161829B2 (en) |
DE (1) | DE1452084A1 (en) |
ES (1) | ES319041A1 (en) |
GB (1) | GB1092718A (en) |
HU (1) | HU155159A (en) |
LU (1) | LU47183A1 (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2933797C2 (en) * | 1979-08-17 | 1982-11-18 | Mannesmann AG, 4000 Düsseldorf | Process for shaping transverse, longitudinal or helical profiles from the wall of thin-walled hollow bodies |
DE3008820C2 (en) * | 1980-03-06 | 1982-02-18 | Mannesmann AG, 4000 Düsseldorf | Device for pilgrimage to a hollow block |
IT1217978B (en) * | 1988-06-30 | 1990-03-30 | Innocenti Santeustacchio Spa | PELLEGRINO PASS ROLLING MACHINE FOR HOT ROLLING OF PIPES |
DE102010025028A1 (en) * | 2010-01-29 | 2011-08-04 | SMS Meer GmbH, 41069 | Hot pilger rolling mill or hot pilger rolling mill and method for operating a hot pilger rolling mill |
DE102010020976A1 (en) * | 2010-05-12 | 2011-11-17 | V&M Deutschland Gmbh | Method for pilgriming hollow ingot on arbor in pilgrim roll, involves pre-deforming hollow ingot by radial force acting on partial periphery and pressing hollow ingot into arbor, where stop is provided at rear end of hollow ingot |
CN106363022B (en) * | 2016-09-27 | 2018-08-28 | 天津钢管集团股份有限公司 | The method for improving titanium alloy seamless steel pipe interior surface quality |
US20200156127A1 (en) | 2017-05-10 | 2020-05-21 | Pubiichnoe aktsionernoe obshchestvo “trubnaya metallurgicheskaya kompaniya” | Continuous tube rolling method and mandrel assembly for the implementation thereof |
CN110722016A (en) * | 2018-07-17 | 2020-01-24 | 韩静涛 | Medium-small caliber thick-wall metal pipe and preparation method thereof |
-
0
- HU HU155159D patent/HU155159A/hu unknown
-
1964
- 1964-10-21 LU LU47183A patent/LU47183A1/xx unknown
-
1965
- 1965-10-20 GB GB4451465A patent/GB1092718A/en not_active Expired
- 1965-10-21 BE BE671238A patent/BE671238A/xx unknown
- 1965-10-21 CS CS636765A patent/CS161829B2/cs unknown
- 1965-10-21 DE DE19651452084 patent/DE1452084A1/en active Pending
- 1965-10-21 ES ES0319041A patent/ES319041A1/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
BE671238A (en) | 1966-02-14 |
LU47183A1 (en) | 1964-12-21 |
CS161829B2 (en) | 1975-06-10 |
GB1092718A (en) | 1967-11-29 |
DE1452084A1 (en) | 1969-11-27 |
HU155159A (en) |
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