EP1591203A1 - Verfahren zum Innenstrahlen von Rohren - Google Patents
Verfahren zum Innenstrahlen von Rohren Download PDFInfo
- Publication number
- EP1591203A1 EP1591203A1 EP05005320A EP05005320A EP1591203A1 EP 1591203 A1 EP1591203 A1 EP 1591203A1 EP 05005320 A EP05005320 A EP 05005320A EP 05005320 A EP05005320 A EP 05005320A EP 1591203 A1 EP1591203 A1 EP 1591203A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tube
- blasting
- jet
- irradiated
- interior
- 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.)
- Withdrawn
Links
- 238000005422 blasting Methods 0.000 title claims abstract description 91
- 238000000034 method Methods 0.000 title claims description 36
- 239000003795 chemical substances by application Substances 0.000 claims description 36
- 239000002245 particle Substances 0.000 claims description 11
- 230000005855 radiation Effects 0.000 claims description 4
- 238000004381 surface treatment Methods 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 230000006978 adaptation Effects 0.000 claims description 2
- 239000011521 glass Substances 0.000 claims description 2
- 230000005484 gravity Effects 0.000 claims description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 239000011707 mineral Substances 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 238000005480 shot peening Methods 0.000 claims 1
- 239000003082 abrasive agent Substances 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012800 visualization Methods 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
- B24C1/10—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for compacting surfaces, e.g. shot-peening
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C3/00—Abrasive blasting machines or devices; Plants
- B24C3/18—Abrasive blasting machines or devices; Plants essentially provided with means for moving workpieces into different working positions
- B24C3/20—Abrasive blasting machines or devices; Plants essentially provided with means for moving workpieces into different working positions the work being supported by turntables
- B24C3/24—Apparatus using impellers
-
- 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
Definitions
- the invention relates to a method for internal radiation of pipes, in particular torsion pipes, in the axially outer End of the interior of the pipe to produce a surface finish in this area of the inner surface, wherein a blasting agent on the surface of the tube interior is blasted.
- Jet nozzles which acts on compressed air and blasting agent become.
- the nozzle or nozzles are from the outside in the tube moves in to the radiating areas of the inner surface of the tube to apply the blasting agent.
- Jet nozzles have the advantage that they are relatively are small and therefore also be introduced into tubes can have a relatively small diameter, the introduction of another jet device not allowed.
- a disadvantage is the known method, that it has a very high energy consumption, So overall a relatively low cost has.
- the achievable result of the blasting not always uniformly and reliably reproducible, because in particular pressure fluctuations of the compressed air and wear on the nozzles adversely affect the result of radiation.
- the Task to provide a method of the kind that, avoids the disadvantages presented and with the one at lower energy consumption a consistent and reproducible Beam result is achieved, even if a large number of tubes is blasted.
- blast wheel blasting devices from the state The technique has long been known, but so far Such blast wheel blasting machines either for Machining the outer surfaces of workpieces or for working the inner surface of such a large Workpieces used that the complete blast wheel blasting device into the interior of the hollow workpiece fits.
- Radiant pipes are about such pipes, their lights Inner diameter for receiving a blast wheel blasting device too small.
- the tube and the Strahlschstrahl moved relative to each other during the blasting become.
- the blasting agent beam to different surface areas the inner surface of the tube to be radiated to impinge or the jet of jet under different angles of incidence on the inner surface to direct the radiating pipe area.
- the movement of the tube and abrasive jet relative to each other can z. B. at least one linear movement be, wherein the linear movement preferably transversely to and / or runs in the direction of the longitudinal center axis of the tube.
- the possibility that the angle ⁇ , under which the Blasting agent jet is irradiated into the tube while of the beam is changed.
- the angle of incidence under the the abrasive on the inner surface of the pipe meets, changes.
- the "effect depth" in the hollow interior of the tube changed into, because at one flatter angle, ie a smaller angle ⁇ , the Particles of the blasting agent get further into the interior of the pipe, before going to the inner surface of the pipe to meet.
- a preferred embodiment of the method according to the invention provides that the blasting agent in the blasting medium beam with such speed and under one such angle ⁇ is radiated into the tube that the individual particles of the blasting abrasive jet by rebounding from the inner surface of the tube this inner Surface in each case several times with one for the production of desired surface finish sufficient impact energy to meet.
- the energy given to each particle of the blasting medium by the Impeller-blasting device is given, for several "Collisions" between the abrasive particle and the inner surface of the area to be irradiated used of the pipe.
- the tube is aligned during blasting so that the incident at the one Rohrend Scheme in the tube Blasting agent after delivery of its kinetic energy to the inner surface of the tube by means of gravity slips to the opposite pipe end or falls and leaves the pipe inside. That from the pipe exiting abrasive can, for example, in a Collecting container or a collecting funnel, from where it is then batchwise or steadily the Blasting device can be fed back.
- both of which End portions of the tube to be blasted is preferably provided that the tube aligned horizontally is that one end portions and the other end portion the tube interior are blasted simultaneously and that radiated from the two sides into the tube Blasting agent after delivery of its kinetic energy to the inner surface of the tube during blasting collected in the axially central region of the tube interior and poured out after blasting from inside the pipe or is sucked off.
- the hollow Inside the tube serves as a temporary collection area for the irradiated blasting medium.
- the blasting process be interrupted briefly to to remove the abrasive from the pipe; after that you can the simultaneous blasting of the two pipe end areas be continued.
- blasting preferably involves shot blasting and blasting are preferably ball of a hard metallic or mineral material, preferably made of Steel or glass, used.
- the left end portion 11 a pipe 1 in side view, partly in broken Visualization visible.
- the tube 1 shown here is it is a torsion tube, for example, as resilient axle is used in a motor vehicle.
- the blasting agent jet 20 is from a blasting device 2, which is designed as a blast wheel blasting device is generated.
- the blasting agent jet 20 from outside the tube 1 ago by its left-facing open front irradiated in the end portion 11 of the hollow interior 13.
- the abrasive particles of the blasting agent jet 20 onto the inner surface 12 of the end portion 11 of the tube 1 and provide there by means their impact for the desired surface finish.
- dashed arrows movement is shown, bounce the blasting agent particles the inner surface 12 and set after delivery of a Part of their kinetic energy their movement in the direction to the interior of the tube 1, that is in drawing after right, away.
- the abrasive particles arrive here a deeper inside the tube 1 lying point again on the inner surface 12 and also take care there, although with slightly reduced momentum, for the desired surface finish, until the energy the abrasive particle is consumed.
- the Blasting agent beam 20 at an angle ⁇ to the longitudinal central axis 10 of the tube 1 in the hollow interior 13 a.
- the angle ⁇ for the blasting process be set to a fixed favorable value; alternative there is also the possibility of the angle ⁇ during of a blasting process by adjusting the alignment the longitudinal central axis 10 of the tube 1 relative to the jet of abrasive medium 20 is changed.
- the irradiated in the hollow interior 13 of the tube 1 Blasting agent can on the not visible in the drawing, sucked off the opposite end of the pipe and the jet device 2 are returned.
- the tube 1 and the blasting agent jet 20 and the blasting device 2 are moved in further directions relative to each other, for example, in a linear direction parallel or perpendicular to the longitudinal central axis 10 of the tube 1 or also in the sense of a rotational movement of the tube 1 about its longitudinal central axis 10.
- the blasting device is 2 expediently positionally fixed, while the tube 1 with Help a holder, not shown here in the desired Way relative to the blasting agent beam 20 moves and transported.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
Description
Claims (12)
- Verfahren zum Innenstrahlen von Rohren (1), insbesondere Torsionsrohren, im axial äußeren Endbereich (11) des Rohrinneren (13) zur Erzeugung einer Oberflächenvergütung in diesem Bereich der inneren Oberfläche (12), wobei ein Strahlmittel auf die Oberfläche (12) des Rohrinneren (13) gestrahlt wird,
dadurch gekennzeichnet, daß das Strahlmittel in Form eines durch eine Schleuderrad-Strahlvorrichtung (2) erzeugten Strahlmittelstrahls (20) von außerhalb des Rohres (1) her unter einem vorgebbaren Winkel α zur Längsmittelachse (10) des Rohres (1) in dieses eingestrahlt wird. - Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß das Rohr (1) und der Strahlmittelstrahl (20) während des Strahlens relativ zueinander bewegt werden.
- Verfahren nach Anspruch 2, dadurch gekennzeichnet, daß die Bewegung von Rohr (1) und Strahlmittelstrahl (20) relativ zueinander mindestens eine lineare Bewegung ist.
- Verfahren nach Anspruch 2 oder 3, dadurch gekennzeichnet, daß die Bewegung von Rohr (1) und Strahlmittelstrahl (20) relativ zueinander eine rotierende Bewegung ist.
- Verfahren nach Anspruch 4, dadurch gekennzeichnet, daß das Rohr (1) um seine Längsmittelachse (10) um einen Winkel von bis zu 360° gedreht wird.
- Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Winkel α, unter dem der Strahlmittelstrahl (20) in das Rohr (1) eingestrahlt wird, während des Strahlens verändert wird.
- Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß in Anpassung an den Durchmesser und/oder den Formverlauf der zu strahlenden inneren Oberfläche (12) des Rohrendbereichs (11) der Durchmesser und/oder der Öffnungswinkel des Strahlmittelstrahl (20) vor dem Strahlen passend eingestellt und/oder während des Strahlens gezielt verändert wird.
- Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das Strahlmittel im Strahlmittelstrahl (20) mit einer solchen Geschwindigkeit und unter einem solchen Winkel α in das Rohr (1) eingestrahlt wird, daß die einzelnen Partikel des Strahlmittelstrahls (20) durch Abprallen von der inneren Oberfläche (12) des Rohres (1) diese innere Oberfläche (12) jeweils mehrfach mit einer zur Erzeugung der gewünschten Oberflächenvergütung ausreichenden Aufprallenergie treffen.
- Verfahren nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß das an dem einen Rohrendbereich (11) in das Rohr (1) eingestrahlte Strahlmittel nach Abgabe seiner Bewegungsenergie an die innere Oberfläche (12) des Rohrs (1) an dem entgegengesetzten Rohrendbereich abgesaugt wird.
- Verfahren nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß das Rohr (1) beim Strahlen so ausgerichtet wird, daß das an dem einen Rohrendbereich (11) in das Rohr (1) eingestrahlte Strahlmittel nach Abgabe seiner Bewegungsenergie an die innere Oberfläche (12) des Rohrs (1) mittels Schwerkraftwirkung zu dem entgegengesetzten Rohrendbereich rutscht oder fällt und dort das Rohrinnere verläßt.
- Verfahren nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß das Rohr (1) horizontal ausgerichtet wird, daß der eine Endbereiche (11) und der andere Endbereich des Rohrinneren (13) gleichzeitig gestrahlt werden und daß das von den beiden Seiten her in das Rohr (1) eingestrahlte Strahlmittel nach Abgabe seiner Bewegungsenergie an die innere Oberfläche (12) des Rohrs (1) während des Strahlens im axial mittleren Bereich des Rohrinneren (13) gesammelt und nach dem Strahlen aus dem Rohrinneren (13) ausgeschüttet oder abgesaugt wird.
- Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das Strahlen ein Kugelstrahlen ist und daß als Strahlmittel Kugeln aus einem harten metallischen oder mineralischen Material, vorzugsweise aus Stahl oder Glas, verwendet werden.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200410020946 DE102004020946B4 (de) | 2004-04-28 | 2004-04-28 | Verfahren zum Innenstrahlen von Rohren |
DE102004020946 | 2004-04-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1591203A1 true EP1591203A1 (de) | 2005-11-02 |
Family
ID=34934199
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05005320A Withdrawn EP1591203A1 (de) | 2004-04-28 | 2005-03-11 | Verfahren zum Innenstrahlen von Rohren |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1591203A1 (de) |
DE (1) | DE102004020946B4 (de) |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1990318A (en) * | 1933-06-14 | 1935-02-05 | Campbell Wyant & Cannon Co | Metal cleaning machine |
US2131769A (en) * | 1936-08-21 | 1938-10-04 | American Foundry Equip Co | Apparatus for treating metal articles |
US2154843A (en) * | 1936-03-21 | 1939-04-18 | American Foundry Equip Co | Abrading apparatus |
GB693206A (en) * | 1950-11-07 | 1953-06-24 | Pangborn Corp | Blast cleaning |
US3750339A (en) * | 1971-12-20 | 1973-08-07 | Carborundum Co | Pipe cleaning apparatus |
EP0133937A1 (de) * | 1983-08-17 | 1985-03-13 | Lonza Ag | Verfahren zur Entzunderung von Luppen |
US6443169B1 (en) * | 2000-06-10 | 2002-09-03 | Fernando M Ferreira | Portable apparatus for rotatably maintaining a pumping conduit on an incline |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2533952A1 (de) * | 1975-07-30 | 1977-02-17 | Berger Maschf Gmbh | Vorrichtung zur strahlreinigung der innenflaechen von rohren |
DE3939888C1 (de) * | 1989-11-30 | 1991-01-10 | Mannesmann Ag, 4000 Duesseldorf, De |
-
2004
- 2004-04-28 DE DE200410020946 patent/DE102004020946B4/de not_active Expired - Fee Related
-
2005
- 2005-03-11 EP EP05005320A patent/EP1591203A1/de not_active Withdrawn
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1990318A (en) * | 1933-06-14 | 1935-02-05 | Campbell Wyant & Cannon Co | Metal cleaning machine |
US2154843A (en) * | 1936-03-21 | 1939-04-18 | American Foundry Equip Co | Abrading apparatus |
US2131769A (en) * | 1936-08-21 | 1938-10-04 | American Foundry Equip Co | Apparatus for treating metal articles |
GB693206A (en) * | 1950-11-07 | 1953-06-24 | Pangborn Corp | Blast cleaning |
US3750339A (en) * | 1971-12-20 | 1973-08-07 | Carborundum Co | Pipe cleaning apparatus |
EP0133937A1 (de) * | 1983-08-17 | 1985-03-13 | Lonza Ag | Verfahren zur Entzunderung von Luppen |
US6443169B1 (en) * | 2000-06-10 | 2002-09-03 | Fernando M Ferreira | Portable apparatus for rotatably maintaining a pumping conduit on an incline |
Also Published As
Publication number | Publication date |
---|---|
DE102004020946A1 (de) | 2005-11-24 |
DE102004020946B4 (de) | 2014-10-02 |
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Legal Events
Date | Code | Title | Description |
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR |
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AX | Request for extension of the european patent |
Extension state: AL BA HR LV MK YU |
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17P | Request for examination filed |
Effective date: 20060427 |
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AKX | Designation fees paid |
Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR |
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17Q | First examination report despatched |
Effective date: 20060718 |
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17Q | First examination report despatched |
Effective date: 20060718 |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN |
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18W | Application withdrawn |
Effective date: 20070524 |