EP0133937A1 - Verfahren zur Entzunderung von Luppen - Google Patents
Verfahren zur Entzunderung von Luppen Download PDFInfo
- Publication number
- EP0133937A1 EP0133937A1 EP84108428A EP84108428A EP0133937A1 EP 0133937 A1 EP0133937 A1 EP 0133937A1 EP 84108428 A EP84108428 A EP 84108428A EP 84108428 A EP84108428 A EP 84108428A EP 0133937 A1 EP0133937 A1 EP 0133937A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- descaling agent
- descaling
- mixture
- alkali
- dry
- 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.)
- Ceased
Links
- 238000000034 method Methods 0.000 title claims description 14
- 239000000203 mixture Substances 0.000 claims abstract description 18
- 239000007788 liquid Substances 0.000 claims abstract description 3
- 238000004519 manufacturing process Methods 0.000 claims abstract description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 24
- 239000000314 lubricant Substances 0.000 claims description 8
- 239000003513 alkali Substances 0.000 claims description 7
- 238000005096 rolling process Methods 0.000 claims description 7
- 150000001875 compounds Chemical class 0.000 claims description 6
- 239000000428 dust Substances 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 229910019142 PO4 Inorganic materials 0.000 claims description 4
- 235000021317 phosphate Nutrition 0.000 claims description 4
- BTBUEUYNUDRHOZ-UHFFFAOYSA-N Borate Chemical compound [O-]B([O-])[O-] BTBUEUYNUDRHOZ-UHFFFAOYSA-N 0.000 claims description 2
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 2
- 150000001642 boronic acid derivatives Chemical class 0.000 claims description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 2
- 239000010452 phosphate Substances 0.000 claims description 2
- 150000003013 phosphoric acid derivatives Chemical class 0.000 claims description 2
- 239000000843 powder Substances 0.000 claims description 2
- 150000004760 silicates Chemical class 0.000 claims 1
- 239000002893 slag Substances 0.000 claims 1
- 239000007789 gas Substances 0.000 description 7
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- 229910052582 BN Inorganic materials 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 241000237858 Gastropoda Species 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000011872 intimate mixture Substances 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229910052756 noble gas Inorganic materials 0.000 description 1
- 150000002835 noble gases Chemical class 0.000 description 1
- JTJMJGYZQZDUJJ-UHFFFAOYSA-N phencyclidine Chemical class C1CCCCN1C1(C=2C=CC=CC=2)CCCCC1 JTJMJGYZQZDUJJ-UHFFFAOYSA-N 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000011833 salt mixture Substances 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
- B24C1/08—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for polishing surfaces, e.g. smoothing a surface by making use of liquid-borne abrasives
- B24C1/086—Descaling; Removing coating films
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G3/00—Apparatus for cleaning or pickling metallic material
- C23G3/04—Apparatus for cleaning or pickling metallic material for cleaning pipes
-
- 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
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C3/00—Abrasive blasting machines or devices; Plants
- B24C3/32—Abrasive blasting machines or devices; Plants designed for abrasive blasting of particular work, e.g. the internal surfaces of cylinder blocks
- B24C3/325—Abrasive blasting machines or devices; Plants designed for abrasive blasting of particular work, e.g. the internal surfaces of cylinder blocks for internal surfaces, e.g. of tubes
- B24C3/327—Abrasive blasting machines or devices; Plants designed for abrasive blasting of particular work, e.g. the internal surfaces of cylinder blocks for internal surfaces, e.g. of tubes by an axially-moving flow of abrasive particles without passing a blast gun, impeller or the like along the internal surface
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G5/00—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents
Definitions
- the object of the present invention was to propose a method which enables descaling to be carried out continuously and as completely as possible in the workflow of a rolling mill.
- the essential device elements for carrying out the method are a storage container for holding a dry one or liquid mixture of the descaling agent.
- the mixture is fed into a suitable device, for example a jet pump, to the exit of which helicoidal blades are attached, in which an intimate mixture with a gas is made.
- a suitable device for example a jet pump
- the dosing process is controlled in such a way that 50 to 200 g of descaling agent are expediently used per m2 of surface inside the hollow or hollow block.
- the descaling agent / gas mixture is then introduced into the billet, which is at a rolling temperature of 1100 to 1250 ° C., in such a way that the stream of material flows from one end to the other in a spiral through the inside of the billet.
- the descaling agent is able to chemically descale the inner surface of the plate.
- a dust separator can be attached to the discharge end. Electrostatic dust separators, filter bags, cyclones or wind sifters are used for this purpose.
- the material discharge at the end of the slug is reinforced by a suction device. If a dust separation device is used, the suction is expediently carried out after the dust separation. Blowers, vacuum pumps or fans are used as suction devices.
- the suction system is advantageous Pipe / cyclone / filter / fan, whereby the cyclone has the task of dust separation, the filter is installed for environmental reasons and the fan generates the necessary negative pressure.
- the suction device has the task of supporting the transport of the descaling agent / gas mixture.
- the descaling agent mixed with the gas is usually fed in at approximately ambient temperature.
- the gas heats up very quickly and very strongly in the bail, which is up to 1250 ° C, and there is a risk of it striking back. Therefore, in order to achieve a rapid and even spiral flow of the media, the support is provided by a trigger system.
- a slight negative pressure should preferably prevail inside the pan.
- the constituents of the mixture that do not participate in the descaling reactions can be retained in the separator and fed back to the mixture input system.
- a thorn-like insert can be inserted into the bowl.
- the mandrel insert should form an annular gap of approximately 20 to 50 mm with the inner cap delimitation.
- the mandrel insert can extend over the entire length of the tube extend or include only a partial length, in the latter case the mandrel insert is moved with the input of the descaling agent and its movement inside the pan.
- the surface of the mandrel insert can have a thread or spiral surface structure.
- Suitable gases for taking up and transporting the descaling agent are nitrogen, noble gases, optionally water vapor and preferably air. These gases must also be used as dry as possible when using a dry mixture.
- descaling may be used: compounds containing alkali metal, borates, phosphates or S ILI Kate, or compounds containing alkali and ein.Borat, alkali and a phosphate or an alkali and a silicate, or further mixtures of these compounds.
- the dry mixture of the descaling agent can be used in powder or granular form, with an average diameter of 50 to 1000 micrometers.
- a solid lubricant can also be added to the descaling agents.
- Suitable lubricants for this purpose are the known high-temperature lubricants. such as metal oxides, metals, metal soaps, boron nitrides, glasses, MoS 2 , KCl, polymers such as polyimides or polycarbonates, polyethylene, polypropylene and preferably graphite. Mixtures of selected solid lubricants are also suitable.
- the amount of solid lubricant in the descaling agent can be 3 to 35% by weight.
- the descaling agent possibly in a mixture with the solid lubricant, is largely deposited on the inner surface of the holes.
- the reaction products of scale and descaling agent and any solid lubricant can then develop their intended effect in a subsequent rolling process, during which the mandrel bar and possibly the rolling plug are driven through the hollow block.
- the existing scale layer can be modified in such a way that a uniformly thick and adhesive surface layer is obtained.
- the use of the descaling agent not only provides a uniform and well-adhering thin surface layer, but the products which form on the inner surface of the blank ideally have lubricating properties.
- the blanks, hollow blocks or pipes to be coated on the inside with the descaling agent generally have an outer diameter of 60 to 500 mm and a length of up to 8 m, normally 6 to 8 m.
- the drawing schematically represents an embodiment of the invention.
- 1 denotes the pipe to be descaled
- 2 represents the dosing device
- 3 represents the injector responsible for the spiral material flow.
- the connecting part 4 essentially represents the positive connection between the pipe 1 and the separator 5 and the filter 6 connected to it.
- the material flow is supported by the blower 7.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Lubricants (AREA)
- Treatment Of Fiber Materials (AREA)
- Apparatuses For Bulk Treatment Of Fruits And Vegetables And Apparatuses For Preparing Feeds (AREA)
- Metal Extraction Processes (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH447883A CH655516B (sv) | 1983-08-17 | 1983-08-17 | |
| CH4478/83 | 1983-08-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP0133937A1 true EP0133937A1 (de) | 1985-03-13 |
Family
ID=4276841
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP84108428A Ceased EP0133937A1 (de) | 1983-08-17 | 1984-07-17 | Verfahren zur Entzunderung von Luppen |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP0133937A1 (sv) |
| JP (1) | JPS6064720A (sv) |
| KR (1) | KR850002112A (sv) |
| BR (1) | BR8404107A (sv) |
| CH (1) | CH655516B (sv) |
| ES (1) | ES534717A0 (sv) |
| ZA (1) | ZA845912B (sv) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2559690A1 (sv) * | 1983-02-24 | 1985-08-23 | Dalmine Spa | |
| EP0172366A1 (de) * | 1984-07-23 | 1986-02-26 | Lonza Ag | Verfahren und Vorrichtung zum Beizen von Werkstücken zur Rohrherstellung |
| EP0250881A1 (de) * | 1986-07-03 | 1988-01-07 | Lonza Ag | Verfahren zum Aufbringen eines fliessfähigen Stoffes auf die Innenfläche eines Hohlkörpers und Einrichtung zur Durchführung des Verfahrens |
| EP0309945A2 (de) * | 1987-09-29 | 1989-04-05 | Lonza Ag | Einrichtung zum Aufbringen eines Entzunderungsmittels auf die Innenfläche einer Luppe |
| US5016456A (en) * | 1988-03-30 | 1991-05-21 | Lonza Ltd. | Process for making hollow billets into tubes |
| US5042209A (en) * | 1988-01-19 | 1991-08-27 | Lonza Ltd. | Process for charging a carrier gas stream with a free-flowing material and process for operating the device |
| US5099667A (en) * | 1989-06-16 | 1992-03-31 | Lonza Ltd. | System for suspending and applying solid lubricants to tools or work pieces |
| EP1312432A2 (en) * | 2001-10-30 | 2003-05-21 | Valiant Corporation | Apparatus for cleaning engine block passages |
| EP1591203A1 (de) * | 2004-04-28 | 2005-11-02 | Horst-Dieter Schlick | Verfahren zum Innenstrahlen von Rohren |
| FR2905290A1 (fr) * | 2006-09-05 | 2008-03-07 | Renault Sas | Dispositif de traitement pour le grenaillage de la surface interieure d'une piece tubulaire |
| CN102517427A (zh) * | 2011-12-16 | 2012-06-27 | 陕西飞机工业（集团）有限公司 | 一种装配结构件孔表面强化的装置及方法 |
| CN102764778A (zh) * | 2012-06-28 | 2012-11-07 | 宝山钢铁股份有限公司 | 一种大直径金属管壁内外表面射流除鳞系统及方法 |
| US8402637B2 (en) | 2008-11-04 | 2013-03-26 | Chief Automotive Technologies, Inc. | Vehicle fixture with alignment target |
| CN108085706A (zh) * | 2016-11-19 | 2018-05-29 | 天津欧津汇溢市场调查有限公司 | 一种建筑技术服务用钢管除锈装置 |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3368834B2 (ja) * | 1998-07-24 | 2003-01-20 | 住友金属工業株式会社 | 継目無鋼管の製造方法および内面品質に優れた継目無鋼管 |
| DE102012019025A1 (de) | 2012-09-26 | 2014-03-27 | Sms Meer Gmbh | Deoxidation von schräggewalzten Hohlblöcken |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR896379A (fr) * | 1939-07-17 | 1945-02-20 | Schoeller Bleckmann Stahlwerke | Procédé pour le traitement de pièces qui doivent être élaborées par le procédé à poire de laminage pour former des tubes |
| DE1427828A1 (de) * | 1964-09-09 | 1968-11-21 | Contubind S A | Verfahren und Anlage zur Herstellung nahtloser Metallrohre |
| DE2928083A1 (de) * | 1979-07-12 | 1981-01-29 | Kabel Metallwerke Ghh | Verfahren und vorrichtung zum behandeln von kupferrohren |
-
1983
- 1983-08-17 CH CH447883A patent/CH655516B/de not_active IP Right Cessation
-
1984
- 1984-07-17 EP EP84108428A patent/EP0133937A1/de not_active Ceased
- 1984-07-30 ES ES534717A patent/ES534717A0/es active Granted
- 1984-07-31 ZA ZA845912A patent/ZA845912B/xx unknown
- 1984-08-16 JP JP59170970A patent/JPS6064720A/ja active Pending
- 1984-08-16 BR BR8404107A patent/BR8404107A/pt unknown
- 1984-08-16 KR KR1019840004914A patent/KR850002112A/ko not_active Application Discontinuation
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR896379A (fr) * | 1939-07-17 | 1945-02-20 | Schoeller Bleckmann Stahlwerke | Procédé pour le traitement de pièces qui doivent être élaborées par le procédé à poire de laminage pour former des tubes |
| DE1427828A1 (de) * | 1964-09-09 | 1968-11-21 | Contubind S A | Verfahren und Anlage zur Herstellung nahtloser Metallrohre |
| DE2928083A1 (de) * | 1979-07-12 | 1981-01-29 | Kabel Metallwerke Ghh | Verfahren und vorrichtung zum behandeln von kupferrohren |
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2559690A1 (sv) * | 1983-02-24 | 1985-08-23 | Dalmine Spa | |
| EP0172366A1 (de) * | 1984-07-23 | 1986-02-26 | Lonza Ag | Verfahren und Vorrichtung zum Beizen von Werkstücken zur Rohrherstellung |
| EP0250881A1 (de) * | 1986-07-03 | 1988-01-07 | Lonza Ag | Verfahren zum Aufbringen eines fliessfähigen Stoffes auf die Innenfläche eines Hohlkörpers und Einrichtung zur Durchführung des Verfahrens |
| US4790263A (en) * | 1986-07-03 | 1988-12-13 | Lonza, Ltd. | Process for application of free-flowing material on the inner surface of a tube blank and device for performing the process |
| EP0309945A2 (de) * | 1987-09-29 | 1989-04-05 | Lonza Ag | Einrichtung zum Aufbringen eines Entzunderungsmittels auf die Innenfläche einer Luppe |
| EP0309945A3 (en) * | 1987-09-29 | 1990-05-30 | Lonza Ag | Device for applying a descaling agent to the inner surface of a loop |
| US5042209A (en) * | 1988-01-19 | 1991-08-27 | Lonza Ltd. | Process for charging a carrier gas stream with a free-flowing material and process for operating the device |
| US5016456A (en) * | 1988-03-30 | 1991-05-21 | Lonza Ltd. | Process for making hollow billets into tubes |
| US5099667A (en) * | 1989-06-16 | 1992-03-31 | Lonza Ltd. | System for suspending and applying solid lubricants to tools or work pieces |
| EP1312432A3 (en) * | 2001-10-30 | 2004-05-12 | Valiant Corporation | Apparatus for cleaning engine block passages |
| EP1312432A2 (en) * | 2001-10-30 | 2003-05-21 | Valiant Corporation | Apparatus for cleaning engine block passages |
| EP1591203A1 (de) * | 2004-04-28 | 2005-11-02 | Horst-Dieter Schlick | Verfahren zum Innenstrahlen von Rohren |
| FR2905290A1 (fr) * | 2006-09-05 | 2008-03-07 | Renault Sas | Dispositif de traitement pour le grenaillage de la surface interieure d'une piece tubulaire |
| WO2008029039A2 (fr) * | 2006-09-05 | 2008-03-13 | Renault S.A.S. | Dispositif de traitement pour le grenaillage de la surface interieure d'une piece tubulaire |
| WO2008029039A3 (fr) * | 2006-09-05 | 2008-05-02 | Renault Sa | Dispositif de traitement pour le grenaillage de la surface interieure d'une piece tubulaire |
| US8402637B2 (en) | 2008-11-04 | 2013-03-26 | Chief Automotive Technologies, Inc. | Vehicle fixture with alignment target |
| CN102517427A (zh) * | 2011-12-16 | 2012-06-27 | 陕西飞机工业（集团）有限公司 | 一种装配结构件孔表面强化的装置及方法 |
| CN102517427B (zh) * | 2011-12-16 | 2013-07-10 | 陕西飞机工业（集团）有限公司 | 一种装配结构件孔表面强化的装置及方法 |
| CN102764778A (zh) * | 2012-06-28 | 2012-11-07 | 宝山钢铁股份有限公司 | 一种大直径金属管壁内外表面射流除鳞系统及方法 |
| CN102764778B (zh) * | 2012-06-28 | 2014-12-03 | 宝山钢铁股份有限公司 | 一种大直径金属管壁内外表面射流除鳞系统及方法 |
| CN108085706A (zh) * | 2016-11-19 | 2018-05-29 | 天津欧津汇溢市场调查有限公司 | 一种建筑技术服务用钢管除锈装置 |
Also Published As
| Publication number | Publication date |
|---|---|
| ZA845912B (en) | 1985-03-27 |
| JPS6064720A (ja) | 1985-04-13 |
| KR850002112A (ko) | 1985-05-06 |
| CH655516B (sv) | 1986-04-30 |
| ES8505268A1 (es) | 1985-05-16 |
| ES534717A0 (es) | 1985-05-16 |
| BR8404107A (pt) | 1985-07-16 |
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