EP2900394A1 - Deoxidation von schräggewalzten hohlblöcken - Google Patents
Deoxidation von schräggewalzten hohlblöckenInfo
- Publication number
- EP2900394A1 EP2900394A1 EP13759993.2A EP13759993A EP2900394A1 EP 2900394 A1 EP2900394 A1 EP 2900394A1 EP 13759993 A EP13759993 A EP 13759993A EP 2900394 A1 EP2900394 A1 EP 2900394A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- deoxidizer
- tube
- inert gas
- pipe
- fluidized
- 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.)
- Granted
Links
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
- B21B19/02—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 diagonally to the axis of the work, e.g. "cross" tube-rolling ; Diescher mills, Stiefel disc piercers or Stiefel rotary piercers
- B21B19/04—Rolling basic material of solid, i.e. non-hollow, structure; Piercing, e.g. rotary piercing mills
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B25/00—Mandrels for metal tube rolling mills, e.g. mandrels of the types used in the methods covered by group B21B17/00; Accessories or auxiliary means therefor ; Construction of, or alloys for, mandrels or plugs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/04—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for de-scaling, e.g. by brushing
-
- 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
Definitions
- the invention relates to a method for producing a pipe or pipe precursor from a solid body by means of a rolling mill, comprising at least one attacking from the outside of the solid body or the pipe precursor roller, in particular inclined roller, and a hole plug carrying and engaging from inside the pipe or pipe precursor mandrel , Moreover, the invention relates to a rolling mill for carrying out such a method.
- hollow blocks such as pipes, or pipe precursors of metallic solid bodies
- a hole plug is supported by a mandrel and continuously transforms a metallic solid body into a hollow block in a hot forming process.
- the workpiece is usually held in this forming process between two externally acting oblique rollers, via which a rotational movement is applied to the workpiece.
- the wall thickness of the hollow body is usually determined by the distance between the hole plug and the outer rollers or.
- One approach to removing the mill scale is, for example, the use of fluidized deoxidizers and the injection of inert gases at least to protect the hollow block interior surfaces of the produced pipe or pipe precursor. Such methods are described, for example, in DE 1427828, DE 3405771, CH 655516 and WO 2011/083101.
- the blowing of the deoxidizing means is carried out in a special Deoxidationsstation after Lochwalzvorgang by coupling a Einblasvortechnisch on one side and optionally a suction device on the other side of the hollow block.
- An alternative to this is suggested in WO 2011/154133 and DE 1427828, in which inert gas or deoxidizer is blown through bores in the carrier rod of the perforated plug or through bores in the perforation plug itself into the hollow block during or immediately after punching.
- the object of the invention was to limit the use of the amount of deoxidizer to the required minimum.
- a fluidized deoxidizer and / or an inert gas is supplied to the side of the pipe or pipe precursor facing the roll, and upon retraction of the piercer through the pipe or pipe precursor into the interior of the pipe or pipe precursor introduced.
- tube or tube precursor is obtained continuously, in particular within a period of 10 seconds after piercing the solid body, preferably within 5 seconds, particularly preferably within from one second after the complete punching of the solid body, inert gas, deoxidizer or a mixture thereof to the at least one roller, in particular oblique roller, facing side of the tube or tube precursor is supplied and then in particular by the action of retraction of the piercing pin through the tube or tube precursor generated negative pressure in the interior of the pipe or pipe precursor is introduced.
- the negative pressure formed by the retraction of the piercing mandrel in the hollow block is used to draw in inert gas and / or a deoxidizer fluidized by carrier gas.
- the deoxidizer and optionally also the inert gas is conveyed through the free, arranged on both sides of the end of the hollow block.
- the supply of deoxidant and / or inert gas under the effect of the negative pressure generated when retracting the piercer also achieves a lower consumption of deoxidizer and / or Inert gas due to a immediate covering of the hollow block inner surface after punching and turbulence of the deoxidizer and / or inert gas and a distribution in the hollow block without the otherwise usually required excess amounts of carrier gas. Inert gas and / or Oeoxidationsstoff.
- a device for supplying and introducing fluidized deoxidizer and / or inert gas to the at least one side of the tube or tube precursor facing the roller is provided for this purpose in accordance with the invention.
- the effects achievable with the device are the same as those already described above with respect to the method.
- the supply of fluidized deoxidizer and / or inert gas already takes place before the retraction of the piercing mandrel, so that it is ensured that by retracting the piercer no ambient air, but only inert gas, deoxidizer or a mixture thereof by means of negative pressure is introduced into the hollow block interior.
- process control simultaneously start the retraction of the piercing mandrel and the supply of fluidized deoxidizer and / or inert gas to thereby minimize the consumption of inert gas and / or deoxidizer to the required minimum.
- the inflow of air into the interior of the pipe or pipe precursor is at least largely prevented, at least until the beginning of the supply of fluidized deoxidizer and / or inert gas.
- This can be achieved, for example, by introducing inert gas through the side of the workpiece facing away from the roller, in particular the oblique roller, during the hole mandrel process which has not yet been completed.
- the supply of fluidized deoxidizer and / or inert gas takes place under an overpressure of not more than one bar, preferably not more than 0.25 bar.
- the perforation plug is usually only slightly smaller than the inner diameter of the hollow block, a negative pressure forms on retraction of the plug on the side facing away from the abutment of the perforated plug, thus the side facing the roller of the perforated plug.
- the suction effect is utilized to draw inert gas and / or fluidized deoxidizer in the hollow block itself. Because in this case the injected media need not first overcome the resistance of an air mass present in the hollow block and a strong turbulence is generated by the suction effect of the perforated plug, less inert gas and / or deoxidant and a more uniform distribution of the latter in the hollow block are to be expected.
- a carrier gas is added to the deoxidizer.
- the supply and distribution of the deoxidizer to the workpiece and within the hollow block is supported particularly advantageous.
- the carrier gas the fluidization of the deoxidizer can be achieved by mixing with a gaseous medium.
- the deoxidizer is pneumatically supplied. As a result, a particularly simple and manageable method is used, in which the supply of deoxidizer with particularly easy and precisely adjustable pressures and reliable to the workpiece is guaranteed.
- a rolling mill for carrying out the method according to the invention according to the first aspect of the invention is disclosed as already described.
- the rolling mill comprises at least one roller acting on the outside of the solid body or the pipe precursor, in particular a skew roll, and a mandrel bar carrying a hole plug and engaging the pipe or pipe precursor from the inside.
- An apparatus for supplying and introducing fluidized deoxidizer and / or inert gas is provided, which preferably comprises a means for at least one side sealing of the pipe or pipe precursor to the ambient atmosphere.
- Such means can be obtained, for example, in the form of a lid which completely covers the through-hole created by the hole plug.
- a storage for an inert gas and a storage for a deoxidizer and valves for controlling the supply from the respective storage to the pipe or pipe precursor are provided.
- a process control unit for controlling the supply of deoxidizer and / or inert gas and for controlling the perforated stopper.
- the supply of inert gas and / or deoxidizer can be adjusted to the movement of the perforated plug, whereby a secure process management with optimized supply of inert gas and / or deoxidizer depending on the process condition is achievable.
- Figure 1 is a schematic view of the method for producing a
- Figure 3 is a schematic view of a rolling mill according to the invention at
- Figure 1 shows a schematic view of a rolling mill 1 for Lochdomen a workpiece 2 by means of a hole plug 3 bearing mandrel 4.
- the workpiece 2 is rotated and simultaneously conveyed in the direction of arrow 6, so continuously from a solid metal block a pipe 2 or pipe precursor with a newly created by the hole plug 3 inner surface 7 form.
- Figure 2 shows a schematic view of a rolling mill 1 according to the invention, in which a device 8 for supplying deoxidizer and inert gas to the rollers 5a, 5b facing the end of the tube 2 is provided.
- the hole plug 3 has just completely pushed through the body 2 and the supply of the device 8 takes place along the direction indicated by the arrow 9 direction.
- the device 8 comprises a cover 10 for covering the roller facing the roller. th side of the tube 2 and valves 11, 12 for controlling the supply of deoxidizer and inert gas through the device 8 into the tube 2 inside.
- FIG. 3 shows a state in which the rolling mill 1 carries out the method according to the invention. While the hole plug 3 is pulled out of the tube 2 along the direction of the arrow 13 together with the mandrel rod 4, deoxidizer and nitrogen is fed as inert gas from the reservoirs 14, 15 via the device 8 in the tube 2 and here under the influence of negative pressure within promoted by the mandrel 4 released space in the interior of the tube 2 and on the inner tube wall 7 out and swirled.
- the device 8 also includes a valve 16 through which the supply of nitrogen from the reservoir 15 into the deoxidizer powder storage 14 can be controlled so as to convert the deoxidizer powder from the storage 15 to the fluidized state by the nitrogen.
- the nitrogen from the reservoir 15 thus also serves as a carrier gas for the deoxidation powder from the reservoir 14.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
- Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
- Control Of Metal Rolling (AREA)
- Metal Extraction Processes (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
- Superconductors And Manufacturing Methods Therefor (AREA)
- Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
- Colloid Chemistry (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102012019025.5A DE102012019025A1 (de) | 2012-09-26 | 2012-09-26 | Deoxidation von schräggewalzten Hohlblöcken |
| PCT/EP2013/067917 WO2014048670A1 (de) | 2012-09-26 | 2013-08-29 | Deoxidation von schräggewalzten hohlblöcken |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2900394A1 true EP2900394A1 (de) | 2015-08-05 |
| EP2900394B1 EP2900394B1 (de) | 2016-09-28 |
Family
ID=49162116
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP13759993.2A Not-in-force EP2900394B1 (de) | 2012-09-26 | 2013-08-29 | Deoxidation von schräggewalzten hohlblöcken |
Country Status (12)
| Country | Link |
|---|---|
| US (1) | US9833820B2 (de) |
| EP (1) | EP2900394B1 (de) |
| JP (1) | JP5976227B2 (de) |
| CN (1) | CN104661767B (de) |
| BR (1) | BR112015005734A2 (de) |
| DE (1) | DE102012019025A1 (de) |
| ES (1) | ES2609026T3 (de) |
| MX (1) | MX357207B (de) |
| RU (1) | RU2610376C2 (de) |
| SA (1) | SA515360180B1 (de) |
| WO (1) | WO2014048670A1 (de) |
| ZA (1) | ZA201500905B (de) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITUB20150855A1 (it) * | 2015-05-25 | 2016-11-25 | Sms Innse Spa | Impianto ausiliario per un perforatore |
| CN110116136A (zh) * | 2019-06-11 | 2019-08-13 | 南通市嘉业机械制造有限公司 | 一种高强度无缝钢管穿孔顶头 |
| CN111515251B (zh) * | 2020-04-09 | 2022-02-18 | 鑫鹏源(聊城)智能科技有限公司 | 一种用于无缝钢管穿孔的扩径装置 |
| CN115026131A (zh) * | 2021-03-07 | 2022-09-09 | 河南明镁镁业科技有限公司 | 一种镁合金无缝管材加工装置 |
| CN120228119B (zh) * | 2025-05-30 | 2025-10-10 | 江苏百澄特种钢管制造有限公司 | 一种换热器用无缝管成型压力机 |
Family Cites Families (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL130355C (de) | 1964-09-09 | |||
| SU631225A1 (ru) * | 1977-08-11 | 1978-11-05 | Московский Ордена Трудового Красного Знамени Институт Стали И Сплавов | Оправка дл винтовой прошивки |
| JPS5933011B2 (ja) | 1979-01-12 | 1984-08-13 | 株式会社東芝 | オゾン脱臭装置 |
| JPS55112108A (en) * | 1979-02-21 | 1980-08-29 | Nippon Steel Corp | Preventing method for surface roughening of product in manufacturing process for seamless steel pipe |
| SU986534A1 (ru) * | 1981-11-27 | 1983-01-07 | Днепропетровский Ордена Трудового Красного Знамени Металлургический Институт | Устройство дл подачи жидкости на внутреннюю поверхность труб |
| JPS5933011A (ja) * | 1982-08-19 | 1984-02-22 | Kawasaki Steel Corp | 継目無鋼管の製造方法 |
| IT1160196B (it) | 1983-02-24 | 1987-03-04 | Dalmine Spa | Procedimento di disossidazione a caldo di tubi metallici semilavorati |
| CH655516B (de) | 1983-08-17 | 1986-04-30 | ||
| SU1196046A1 (ru) * | 1983-11-18 | 1985-12-07 | Уральский научно-исследовательский институт трубной промышленности | Способ винтовой прошивки |
| DE3432288C2 (de) | 1984-09-01 | 1987-01-02 | Kocks Technik Gmbh & Co, 4010 Hilden | Anwendung von Inertgas beim Herstellen nahtloser Rohre |
| JPS62286610A (ja) * | 1986-06-04 | 1987-12-12 | Sumitomo Metal Ind Ltd | 熱間継目無鋼管の製法 |
| CH674477A5 (de) * | 1988-03-30 | 1990-06-15 | Lonza Ag | |
| WO2005123289A1 (ja) * | 2004-06-18 | 2005-12-29 | Sumitomo Metal Industries, Ltd. | 継目無鋼管の製造方法 |
| JP4780107B2 (ja) * | 2005-06-14 | 2011-09-28 | 住友金属工業株式会社 | 穿孔機、プラグ及び継目無管の製造方法 |
| CN101745555B (zh) * | 2009-12-10 | 2011-09-28 | 天津钢管集团股份有限公司 | 钢管坯管内表面除磷方法 |
| CN101767114B (zh) * | 2009-12-23 | 2012-05-30 | 攀钢集团钢铁钒钛股份有限公司 | 无缝钢管的管坯内部氧化皮的清除方法 |
| WO2011083101A2 (fr) | 2010-01-07 | 2011-07-14 | New Seamless Tube Technology Corp. | Laminage à chaud de tubes métalliques sans soudure sur un laminoir continu à mandrin fixe |
| CN103025445B (zh) | 2010-06-08 | 2016-07-06 | 涂层处理瑞士有限责任公司 | 生产无缝管的方法 |
| DE102010049645A1 (de) | 2010-06-28 | 2011-12-29 | Sms Meer Gmbh | Verfahren zum Warmwalzen metallischer Hohlkörper sowie entsprechendes Warmwalzwerk |
| DE102011012761A1 (de) | 2011-03-01 | 2012-05-24 | Sms Meer Gmbh | Verfahren und Vorrichtung zum Erzeugen eines Hohlblocks, Innenwerkzeug mit einer Dornstange und einem Lochdorn, Verwendung eines Innenwerkzeugs und Verwendung eines Deoxidationsmittels |
-
2012
- 2012-09-26 DE DE102012019025.5A patent/DE102012019025A1/de not_active Withdrawn
-
2013
- 2013-08-29 MX MX2015003808A patent/MX357207B/es active IP Right Grant
- 2013-08-29 EP EP13759993.2A patent/EP2900394B1/de not_active Not-in-force
- 2013-08-29 RU RU2015115637A patent/RU2610376C2/ru active
- 2013-08-29 US US14/419,684 patent/US9833820B2/en active Active
- 2013-08-29 JP JP2015533502A patent/JP5976227B2/ja not_active Expired - Fee Related
- 2013-08-29 CN CN201380050350.2A patent/CN104661767B/zh not_active Expired - Fee Related
- 2013-08-29 ES ES13759993.2T patent/ES2609026T3/es active Active
- 2013-08-29 WO PCT/EP2013/067917 patent/WO2014048670A1/de not_active Ceased
- 2013-08-29 BR BR112015005734A patent/BR112015005734A2/pt not_active Application Discontinuation
-
2015
- 2015-02-09 ZA ZA201500905A patent/ZA201500905B/en unknown
- 2015-03-23 SA SA515360180A patent/SA515360180B1/ar unknown
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2014048670A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2900394B1 (de) | 2016-09-28 |
| US20150196942A1 (en) | 2015-07-16 |
| DE102012019025A1 (de) | 2014-03-27 |
| ES2609026T3 (es) | 2017-04-18 |
| WO2014048670A1 (de) | 2014-04-03 |
| RU2610376C2 (ru) | 2017-02-09 |
| ZA201500905B (en) | 2019-10-30 |
| CN104661767B (zh) | 2016-11-09 |
| US9833820B2 (en) | 2017-12-05 |
| SA515360180B1 (ar) | 2016-03-27 |
| JP5976227B2 (ja) | 2016-08-23 |
| BR112015005734A2 (pt) | 2017-07-04 |
| RU2015115637A (ru) | 2016-11-20 |
| MX357207B (es) | 2018-06-29 |
| CN104661767A (zh) | 2015-05-27 |
| MX2015003808A (es) | 2015-07-17 |
| JP2015530258A (ja) | 2015-10-15 |
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