GB655532A - Improvements in or relating to the production of seamless steel tubes - Google Patents
Improvements in or relating to the production of seamless steel tubesInfo
- Publication number
- GB655532A GB655532A GB3116848A GB3116848A GB655532A GB 655532 A GB655532 A GB 655532A GB 3116848 A GB3116848 A GB 3116848A GB 3116848 A GB3116848 A GB 3116848A GB 655532 A GB655532 A GB 655532A
- Authority
- GB
- United Kingdom
- Prior art keywords
- mandrel
- bottle
- tube
- mill
- diameter
- 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
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B23/00—Tube-rolling not restricted to methods provided for in only one of groups B21B17/00, B21B19/00, B21B21/00, e.g. combined processes planetary tube rolling, auxiliary arrangements, e.g. lubricating, special tube blanks, continuous casting combined with tube rolling
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Extraction Processes (AREA)
Abstract
655,532. Making seamless tubes. WELLMAN SMITH OWEN ENGINEERING CORPORATION, Ltd., and BROOKS, C. Dec. 1, 1948, No. 31168. [Classes 83 (ii) and 83 (iv)] In a method of producing seamless steel tubes, a cast or rolled billet is placed in a hollow container of a piercing press. and is pierced by means of a punch which has a diameter greater than that of the mandrel employed in the push bench apparatus or continuous seamless tube mill, the bottle thus formed, before having the mandrel applied to it, is subjected to a rolling operation which reduces its internal diameter to, or approximately to, the diameter of the mandrel, and the bottle, after having the mandrel applied to it, is passed through the ring or roller dies or grooved rolls of the push bench apparatus or seamless tube mill. Apparatus for carrying out the above method comprises a piercing press 1, a skew roll mill 10 constructed to reduce the internal diameter of the bottle to, or approximately to, the diameter of the mandrel 40 of a push bench apparatus 38 or a continuous seamless tube mill, Fig. 2 (not shown). Billet-piercing.-The piercing press 1 comprises a hollow container 2 into which the billet is placed, 'the billet being pierced by means of a hydraulically-operated punch 3 of greater diameter than that of the mandrel 40 and the bottle 12 thus formed is ejected by means of a hydraulically-operated pusher 5. Rolling.-The skew roll mill 10 comprises inclined driven rolls 11 arranged so that when the bottle 12 has placed in it a hydraulicallyoperated mandrel 13 of a diameter the same as, or slightly larger than, that of the mandrel 40 and is fed to the rolls it is closed on to the mandrel and spread out lengthwise thereon in the form of a closed-ended bottle. Separating mandrels from work.-The bottle and mandrel 13 after being passed through the mill 10 are conveyed to a mandrel extractor apparatus 22 comprising a device 29 for gripping the mandrel and a step 30 against which the bottle engages on the withdrawal of the mandrel. The device 29 is carried by a bogie 27 running on rails 28 and connected to a motor-driven endless chain 23. The extracted mandrels are conveyed back to the front of the mill 10 for re-use. The push bench apparatus comprises similar mandrel extractor apparatus 50. Cupping.-The bottle after having the mandrel 13 extracted therefrom is conveyed to a table 36 of the push bench apparatus 38 comprising a mandrel 40 which is fed forward to the bottle which is then pushed through a series of dies 37 to form a tube. A table 45 conveys the tube to a polishing or reeling apparatus 46 which loosens the tube on its mandrel 40. The tube is then conveyed to the mandrel extractor apparatus 50. The extracted mandrels are conveyed back through a furnace 53 to the front of the table 36 for reuse. The tube freed from the mandrel passes to hot saw and finishing apparatus 57. When the push bench apparatus is replaced by a continuous seamless tube mill, Fig. 2 (not shown), the dies 37 are replaced by grooved rolls.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3116848A GB655532A (en) | 1948-12-01 | 1948-12-01 | Improvements in or relating to the production of seamless steel tubes |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3116848A GB655532A (en) | 1948-12-01 | 1948-12-01 | Improvements in or relating to the production of seamless steel tubes |
Publications (1)
Publication Number | Publication Date |
---|---|
GB655532A true GB655532A (en) | 1951-07-25 |
Family
ID=10319047
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3116848A Expired GB655532A (en) | 1948-12-01 | 1948-12-01 | Improvements in or relating to the production of seamless steel tubes |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB655532A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE950274C (en) * | 1952-05-25 | 1956-10-04 | Demag Ag | Method and device for reducing the bore of a hollow block punched in a punch press to the diameter of the push rod for the production of overlong, seamless tubes in the push bench |
DE959637C (en) * | 1954-04-24 | 1957-03-07 | Phoenix Rheinrohr Ag Vereinigt | Plant for the production of particularly long and heavy pipes |
DE1081853B (en) * | 1956-06-06 | 1960-05-19 | Pompey Acieries | Method for producing hollow bodies open on one side by punching a block and then stretching out the hole in a push bench |
EP2786814A1 (en) * | 2012-05-14 | 2014-10-08 | Nippon Steel & Sumitomo Metal Corporation | Method for manufacturing seamless pipe |
-
1948
- 1948-12-01 GB GB3116848A patent/GB655532A/en not_active Expired
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE950274C (en) * | 1952-05-25 | 1956-10-04 | Demag Ag | Method and device for reducing the bore of a hollow block punched in a punch press to the diameter of the push rod for the production of overlong, seamless tubes in the push bench |
DE959637C (en) * | 1954-04-24 | 1957-03-07 | Phoenix Rheinrohr Ag Vereinigt | Plant for the production of particularly long and heavy pipes |
DE1081853B (en) * | 1956-06-06 | 1960-05-19 | Pompey Acieries | Method for producing hollow bodies open on one side by punching a block and then stretching out the hole in a push bench |
EP2786814A1 (en) * | 2012-05-14 | 2014-10-08 | Nippon Steel & Sumitomo Metal Corporation | Method for manufacturing seamless pipe |
EP2786814A4 (en) * | 2012-05-14 | 2015-08-12 | Nippon Steel & Sumitomo Metal Corp | Method for manufacturing seamless pipe |
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