CN101980834A - Scale removing method and scale removing device - Google Patents
Scale removing method and scale removing device Download PDFInfo
- Publication number
- CN101980834A CN101980834A CN2009801107910A CN200980110791A CN101980834A CN 101980834 A CN101980834 A CN 101980834A CN 2009801107910 A CN2009801107910 A CN 2009801107910A CN 200980110791 A CN200980110791 A CN 200980110791A CN 101980834 A CN101980834 A CN 101980834A
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- Prior art keywords
- pressure injection
- steel pipe
- injection nozzle
- oxide skin
- pipe
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- 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.)
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Classifications
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- 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
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C9/00—Appurtenances of abrasive blasting machines or devices, e.g. working chambers, arrangements for handling used abrasive material
- B24C9/003—Removing abrasive powder out of the blasting machine
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cleaning In General (AREA)
Abstract
A scale removing device (7) performing blast processing of the inner surface of a steel tube (3) by causing a grinding and cleaning material (not shown) ejected from a high-pressure nozzle (2) to collide with the inner surface of the steel tube (3). The scale removing device (7) has the high-pressure nozzle (2) for ejecting the grinding and cleaning material, a dust collector (4) for collecting powder dust after blast processing, and a suppressing means (6) for suppressing inflow of air into a steel tube (3) from an end of the steel tube (3) occurring as the grinding and cleaning material ejected from the high-pressure nozzle (2) moves. Even if the dust collector has a small power capacity, the scale removing device (7) can remove scale without causing the powder dust to disperse into the atmosphere.
Description
Technical field
The present invention relates to purge oxide skin removal method and the oxide skin removal device that the material impacts steel pipe internal-surface carries out the inject process of steel pipe internal-surface by making from the grinding of high-pressure injection nozzle ejection.
Background technology
According to purpose steel pipe is implemented heat treatment under the situation mostly.In order to improve pipe quality, it is important removing the oxide skin (deoxygenated skin) that results from the steel pipe surfaces externally and internally when heat treatment.As the deoxygenated pico farad of steel pipe internal-surface, the known grindings purging material impacts steel pipe internal-surfaces such as iron, stainless steel, aluminium oxide, silica sand that make remove oxide skin, so-called inject process (blast processing).As inject process, sandblast, shot-peening, grit blast etc. are for example arranged, as the injection method that grind to purge material, adopt high-pressure injection formula or negative pressure sucktion type or make up both mode.
The ejection processing device of so-called high-pressure injection formula, mounting steel pipe on the roller that can rotate for example, making steel pipe is rotation status, insert the high-pressure injection nozzle from the end of steel pipe, purge material from the high-pressure injection nozzle to the steel pipe internal-surface jet grinding, and purge the material impacts steel pipe internal-surface, thereby scale removal by moving along its length to make to grind.Dust after the inject process is reclaimed by the dust catcher of the end of the end opposition side of the steel pipe of being located at and being inserted with the high-pressure injection nozzle usually.
The ejection processing device of so-called negative pressure sucktion type for example is that the end at steel pipe is provided with attractor, utilizing attractor that steel duct is become under the state of negative pressure, packing into from the other end grind to purge material, and the grinding of moving in steel pipe purges the material impacts pipe internal surface and scale removal.
In the ejection processing device of high-pressure injection formula, be used for carrying the length of grinding the pipe (carrier pipe) that purges material long to nozzle, therefore, having needs big shortcomings such as the device space, in the ejection processing device of negative pressure sucktion type, it is little to grind the collision angle that purges material, therefore, has oxide skin to remove shortcomings such as ability is low.
The applicant is in order to remedy the shortcoming of above-mentioned ejection processing device, disclose the invention of the equipment of removing about oxide skin in patent documentation 1, this oxide skin is removed equipment and is disposed side by side: the 1st high-pressure injection inject process portion that a tube end inner surface of steel pipe is carried out inject process; Another tube end inner surface of steel pipe is carried out the 2nd high-pressure injection inject process portion of inject process; The inner surface that spreads all over whole length of steel pipe is carried out the vacuum suction inject process portion of inject process, and between above-mentioned inject process portion, be provided with the connection device of steel pipe.In this invention, remove near the oxide skin in end of the steel pipe that is difficult to remove with the vacuum suction inject process with the high-pressure injection inject process.
Patent documentation 1: Japanese kokai publication hei 11-320413
Compare the air blast capacity that the dust catcher of high-pressure injection inject process uses low (be generally about 40kW or 40kW following) with the air blast (more than the 90kW) that the attractor of vacuum suction inject process uses.This be because, it is negative pressure that the attractor of vacuum suction inject process makes steel pipe, purge material and the sufficient air-flow of necessary generation in order to carry to grind, with respect to this, in the high-pressure injection inject process, carry grinding to purge material by the high-pressure injection nozzle, therefore, the purpose of its dust catcher only is to reclaim dust (grind and purge material and fragment, removed oxide skin etc.).
Fig. 4 is the figure that represents the problem points of high-pressure injection inject process in the past.As shown in Figure 4, in the high-pressure injection inject process, for example, carry compressed air from compressor (not shown), and grind the purging material from grinding the purging material tank to grinding 1 supply of purging material carrier pipe, thereby purge material (not shown) from the grinding of nozzle 2 inject high pressure.Under the external diameter that grind to purge material carrier pipe 1 and the situation little or enough big situation, can use air blast as dust catcher 4 with the corresponding capacity of flow of nozzle 2 as the difference of the internal diameter of injected steel pipe 3.But under the situation of above-mentioned difference in certain constant scope, the air capacity that flows in the steel pipe 3 increases to outside the anticipation, surpasses the attraction power of dust catcher 4, and dust 5 diffuses in the atmosphere sometimes.
This be because, in inject process, utilization purges material from the grinding that high-pressure injection nozzle 2 sprays, in steel pipe 3, produce to grind and purge flowing of material and air, utilize this jet effect, near the air of several times of degree of the flow of inflow high-pressure injection nozzle 2 end (left part of figure) of steel pipe 3.
In order to solve such problem, also the someone thinks increases the capacity of dust catcher.But jet effect is that the internal diameter according to steel pipe increases and decreases, and therefore, from energy-conservation viewpoint, the attraction power that designs dust catcher with the big situation of jet effect accordingly is bad.
Summary of the invention
The present invention proposes in order to solve such problem, its purpose is to provide a kind of inhibition jet effect, in the high-pressure injection inject process, promptly use the dust catcher of low capacity, dust also can not disperse oxide skin removal method and oxide skin removal device in atmosphere.
The present invention proposes in order to solve above-mentioned problem, is main idea with the oxide skin removal device shown in the oxide skin removal method shown in following (1) and following (2).
(1) a kind of oxide skin removal method, be to purge the oxide skin removal method that the material impacts steel pipe internal-surface carries out the inject process of steel pipe internal-surface by making from the grinding of high-pressure injection nozzle ejection, suppress to flow into from steel tube end part the air of steel duct on one side, Yi Bian carry out inject process along with the moving of grinding purging material that sprays from the high-pressure injection nozzle.
(2) a kind of oxide skin removal device is to purge the oxide skin removal device that the material impacts steel pipe internal-surface carries out the inject process of steel pipe internal-surface by making from the grinding of high-pressure injection nozzle ejection, comprising: the high-pressure injection nozzle, and jet grinding purges material; Dust catcher, the dust after the recovery inject process; Suppress parts, suppress to flow into from steel tube end part the air of steel duct along with the moving of grinding purging material that sprays from the high-pressure injection nozzle.
As the oxide skin removal device shown in above-mentioned (2), for example preferred arbitrary mode that adopts in following (a)～(c).
(a) can dust catcher being set from the mode that the pipe end with the insertion end opposition side high-pressure injection nozzle steel pipe reclaims dust, the inhibition parts are made of the sheet material of the size of the insertion end with the high-pressure injection nozzle that can cover steel pipe, and having can be for the through hole of high-pressure injection nozzle slip.
(b) can dust catcher being set from the mode that the pipe end with the insertion end opposition side high-pressure injection nozzle steel pipe reclaims dust, suppress the periphery that parts are installed in the high-pressure injection nozzle, be made of the plectane material that has with the pipe diameter equal outer diameters, these inhibition parts can slide in steel pipe.
(c) be provided with the inhibition parts at the pipe end with the insertion end opposition side high-pressure injection nozzle steel pipe, the mode that reclaims dust with can be from the insertion end with the high-pressure injection nozzle of steel pipe identical pipe end is provided with dust catcher, suppresses parts and is made of the sheet material with the size that can cover steel tube end part.
According to the present invention, in the high-pressure injection inject process, promptly use the dust catcher of low capacity, dust can not disperse in atmosphere yet, so can realize energy-conservation simultaneously and improve operating environment.
Description of drawings
Fig. 1 is the figure of an example of expression oxide skin removal device of the present invention.
Fig. 2 is other the figure of example of expression oxide skin removal device of the present invention.
Fig. 3 is other the figure of example of expression oxide skin removal device of the present invention.
Fig. 4 is the figure that represents oxide skin removal device in the past.
Fig. 5 is the figure of the relation of expression various change bores and nozzle exit pressure and bore in the experiment carried out and inner air tube flow.
Fig. 6 is the figure of the relation of the bore of expression the present invention example and comparative example and inner air tube flow.
Fig. 7 is the figure of expression experiment condition.
Fig. 8 is the figure of the measuring position of flow in the expression pipe.
Fig. 9 is the figure of the relation of expression positioning index X and flow indicator Y.
Description of reference numerals
1, grinds purging material carrier pipe; 2, high-pressure injection nozzle; 3, steel pipe; 4, dust catcher; 5, dust; 6, suppress parts; 7, oxide skin removal device.
The specific embodiment
Use Fig. 1～3, embodiments of the present invention are described.As shown in Figure 1, oxide skin removal device 7 of the present invention is by making the grinding of spraying from high-pressure injection nozzle 2 purge the oxide skin removal device that material (not shown) collision steel pipe 3 inner surfaces carry out the inject process of steel pipe 3 inner surfaces.This oxide skin removal device 7 comprises: high-pressure injection nozzle 2, and jet grinding purges material; Dust catcher 4, the dust after the recovery inject process; Suppress parts 6, suppress to flow into from steel pipe 3 ends the air of steel pipe 3 inside along with the moving of grinding purging material that sprays from high-pressure injection nozzle 2.
Thus, in inject process, because the end (left part the figure) that can suppress from steel pipe 3 flows into the air of steel pipe 3 inside, so, also can reclaim the dust that produces by inject process even do not increase the capacity of dust catcher.
As oxide skin removal device 7 of the present invention, for example, as shown in Figure 1, in the mode that can reclaim dust dust catcher 4 is set, suppresses parts 6 and can use the inhibition parts that constitute, have the through hole that can supply 2 slips of high-pressure injection nozzle by the sheet material of the size of the insertion end with the high-pressure injection nozzle 2 that can cover steel pipe 3 (left part of the steel pipe 3 among Fig. 1) from pipe end (right part of the steel pipe 3 among Fig. 1) with insertion end (left part of the steel pipe 3 Fig. 1) opposition side of the high-pressure injection nozzle 2 of steel pipe 3.
In addition, as oxide skin removal device 7 of the present invention, for example, as shown in Figure 2, with can be from that the example with shown in Figure 1 is set on dust catcher 4 this point is identical with mode that the pipe end (right part of the steel pipe 3 among Fig. 2) of insertion end (left part of the steel pipe 3 Fig. 2) opposition side of the high-pressure injection nozzle 2 of steel pipe 3 reclaims dust, but suppress parts 6 and also can use the periphery that is installed in high-pressure injection nozzle 2, constitute the inhibition parts that can in steel pipe 3, slide by the plectane material that has with steel pipe 3 internal diameter equal outer diameters.
As oxide skin removal device 7 of the present invention, for example, as shown in Figure 3, be provided with at pipe end (right part of the steel pipe 3 among Fig. 3) and suppress parts 6 with insertion end (left part of the steel pipe 3 among Fig. 3) opposition side of the high-pressure injection nozzle 2 of steel pipe 3, with can be from the insertion end (left part of the steel pipe 3 Fig. 3) of the high-pressure injection nozzle 2 of steel pipe 3 the identical pipe end mode that reclaims dust dust catcher (not shown) is set, suppress parts 6 and also can use the inhibition parts that constitute by sheet material with the size that can cover steel pipe 3 ends.
As suppressing parts, preferably with rubber and other telescopic material.In addition, so long as can suppress the formation that air flows into from steel tube end part, just be not particularly limited, yet, for example in example shown in Figure 2, under the more different situation of the size of steel pipe, need to change the size that suppresses parts, so under the high situation of the change in size frequency of the steel pipe of inject process, shown in the example of Fig. 1 or Fig. 3, preferably use the sheet material of the size more much bigger than outer diameter of steel pipes.In addition, in Fig. 1 or Fig. 2, need 2 to be used for reclaiming the dust catcher of dust with the pipe end of injection nozzle insertion end opposition side, yet, also can be 1 dust catcher being used for reclaiming dust in Fig. 3 from the pipe end identical with the nozzle insertion end.Therefore, example device shown in Figure 3 is simple and can reduce the consumable product number of packages, so be preferred from the viewpoint of the cost of repairs.
Utilize the high-pressure injection nozzle to spread all under the situation of whole length steel pipe scale removal, having to make carrier pipe to form longlyer, also needing to increase the amount that the grinding of being sprayed purges material.Therefore, it is residual easily to grind the purging material in pipe, when the residual quantity of grinding purging material increased, the mobile operating of carrier pipe became difficult sometimes, so oxide skin removal device of the present invention is effective especially under the situation that the oxide skin of the pipe end that carries out steel pipe with the high-pressure injection nozzle is removed.
In order to confirm effect of the present invention, at first, carried out following experiment, promptly, insert the high-pressure injection nozzle from an end of the pipe of different internal diameters, the ejection pressure (nozzle exit pressure) of nozzle is changed make the air ejection multiplely, confirm air mass flow with the pipe end of the pipe end opposition side that is inserted with nozzle.In experiment, to have measured at the internal diameter that grind to purge the material carrier pipe be 5.27mm, be 4.9～39.2N/cm with the high-pressure injection nozzle with nozzle exit pressure
2The air air capacity of when the steel pipe of different inner diameters sprays, discharging from tube end.Its result is shown in Fig. 5.
If the inner air tube flow is 2Nm
3Below/the min, even then 14.0kW (bore 100 Φ mm, 1750rpm ,-dust that the dust removal ability of 5000mmAq) low capacity air blast produces in the time of also removing inject process fully, but if surpass 5Nm
3/ min then utilizes above-mentioned low capacity air blast, and dust suction is insufficient, and dust disperses in atmosphere easily.Therefore, the inner air tube flow need be controlled at 5Nm
3Below/the min, be more preferably 2Nm
3Below/the min.
As shown in Figure 5, nozzle exit pressure is big more, and the air mass flow in the pipe is many more.For example, by the observation tube internal diameter be 55mm example as can be known, be 4.9N/cm at nozzle exit pressure
2Or 9.8N/cm
2Example in, the inner air tube flow can be suppressed at 5Nm
3Below/the min, be 19.6N/cm still at nozzle exit pressure
2In the above example, the inner air tube flow surpasses 5Nm
3/ min.On the other hand, under the big situation of bore, the air mass flow in the pipe is also many.For example, be 29.4N/cm observing nozzle exit pressure
2Example as can be known, be in the example of 31mm or 44mm at bore, the inner air tube flow can be suppressed at 5Nm
3Below/the min, but in bore was example more than the 55mm, the inner air tube flow surpassed 5Nm
3/ min.
Then, with inhibition parts of the present invention shown in Figure 1, carried out following experiment, that is, at the end insertion high-pressure injection nozzle of the pipe with various bores, under the state of blocking the pipe end that is inserted with nozzle one side, jetting nozzle pressure is 39.2N/cm
2Air, same as described above, confirm the air mass flow of pipe end with the pipe end opposition side that is inserted with nozzle.Its result is shown in Fig. 6.In addition, the comparative example among Fig. 6 is above-mentioned 39.2N/cm
2Example.
As shown in Figure 6, in example of the present invention, even at ejection 39.2N/cm
2Under the situation of the air of high like this pressure, the air mass flow in the pipe can not increase so much yet, can be 5Nm with the inner air tube flow restriction all in arbitrary example
3Below/the min.
Then, carried out and above-mentioned identical experiment with inhibition parts shown in Figure 3 with Fig. 2, identical with example of the present invention shown in Figure 6, can be 5Nm with the inner air tube flow restriction
3Below/the min.
Then, in order to study the condition that does not produce dust, prepare the steel pipe of external diameter 88.9mm, 114.3mm and 177.8mm, from an end of steel pipe insert the high-pressure injection nozzle (nozzle diameter: 10.0mm), on one side jet grinding purge material (injection flow: 5.9Nm
3/ min), utilize the dust catcher that with the other end be connected to suck this jet grinding purging material (attraction flow: 11.9Nm on one side
3/ min), investigated the generation situation and the interior flow of pipe of the dust of this moment.Attracting flow/injection flow (hereinafter referred to as " Yc ") is 2.As shown in Figure 7, carried out following experiment, that is, near the pipe end of nozzle inserting side, prepared the inhibition plate of the size more than the internal diameter of steel pipe as suppressing parts, to pipe end and suppress plate carried out various changes apart from a.Flow is the mean values of 4 flows of promptly representing with " ● " in Fig. 8 of 5 of 1 of round central part of the dust catcher pipe end that connects side and circumferential part in the pipe.
The relation of representing " apart from the a/ nozzle diameter " (hereinafter referred to as " positioning index X ") and " flow/ejection flow in the pipe " (hereinafter referred to as " flow indicator Y ") at Fig. 9.As shown in Figure 9, in arbitrary steel pipe, the value of positioning index X is big more, and the value of flow indicator Y is big more.The big more tendency of being somebody's turn to do of the size of steel pipe is remarkable more.On the other hand, in arbitrary steel pipe, surpass 2, produced dust when promptly surpassing Yc at flow indicator Y.Therefore, in order to prevent dust, importantly flow indicator Y is no more than Yc.In order to make the interior flow of pipe be no more than the attraction flow of dust catcher, the relation of distance X and nozzle diameter need be set in suitable scope.
Utilizability on the industry
According to the present invention, in the high-pressure injection inject process, namely use the dust catcher of low capacity, dust can not disperse in atmosphere yet, so can realize energy-conservation and improve operating environment.
Claims (5)
1. an oxide skin removal method is to purge the oxide skin removal method that the material impacts steel pipe internal-surface carries out the inject process of steel pipe internal-surface by making from the grinding of high-pressure injection nozzle ejection,
Suppress to flow into from steel tube end part the air of steel duct on one side, Yi Bian carry out inject process along with the moving of grinding purging material that sprays from the high-pressure injection nozzle.
2. an oxide skin removal device is to purge the oxide skin removal device that the material impacts steel pipe internal-surface carries out the inject process of steel pipe internal-surface by making from the grinding of high-pressure injection nozzle ejection, comprising:
The high-pressure injection nozzle, jet grinding purges material; Dust catcher, the dust after the recovery inject process; Suppress parts, suppress to flow into from steel tube end part the air of steel duct along with the moving of grinding purging material that sprays from the high-pressure injection nozzle.
3. oxide skin removal device according to claim 2 is characterized in that,
Can dust catcher being set from the mode that the pipe end with the insertion end opposition side high-pressure injection nozzle steel pipe reclaims dust, the inhibition parts are made of the sheet material of the size of the insertion end with the high-pressure injection nozzle that can cover steel pipe, and having can be for the through hole of high-pressure injection nozzle slip.
4. oxide skin removal device according to claim 2 is characterized in that,
Can dust catcher being set from the mode that the pipe end with the insertion end opposition side high-pressure injection nozzle steel pipe reclaims dust, suppress the periphery that parts are installed in the high-pressure injection nozzle, be made of the plectane material that has with the pipe diameter equal outer diameters, these inhibition parts can slide in steel pipe.
5. oxide skin removal device according to claim 2 is characterized in that,
Be provided with the inhibition parts at the pipe end with the insertion end opposition side high-pressure injection nozzle steel pipe, the mode that reclaims dust with can be from the insertion end with the high-pressure injection nozzle of steel pipe identical pipe end is provided with dust catcher, suppresses parts and is made of the sheet material with the size that can cover steel tube end part.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008079439 | 2008-03-26 | ||
| JP2008-079439 | 2008-03-26 | ||
| PCT/JP2009/055744 WO2009119540A1 (en) | 2008-03-26 | 2009-03-24 | Scale removing method and scale removing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101980834A true CN101980834A (en) | 2011-02-23 |
Family
ID=41113732
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009801107910A Pending CN101980834A (en) | 2008-03-26 | 2009-03-24 | Scale removing method and scale removing device |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20110065363A1 (en) |
| EP (1) | EP2283971A4 (en) |
| JP (1) | JP4400761B2 (en) |
| CN (1) | CN101980834A (en) |
| BR (1) | BRPI0910400A8 (en) |
| WO (1) | WO2009119540A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106102999A (en) * | 2014-02-19 | 2016-11-09 | 维尔贝莱特集团有限公司 | For carrying out the method for bead to the inside pipe wall of the curved workpieces with workpiece hole and for the nozzle unit of described method and spray booth system |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8801499B2 (en) * | 2009-04-21 | 2014-08-12 | Sharp Kabushiki Kaisha | Blasting apparatus and method for blast processing |
| US9085064B2 (en) * | 2010-09-09 | 2015-07-21 | Envirologics Engineering Inc. | System for dispensing abrasives into a gas stream for cleaning pipe interiors |
| CN102806328A (en) * | 2011-06-02 | 2012-12-05 | 江苏永钢集团有限公司 | Purging device for ferric oxide on billet surface |
| US10435779B2 (en) * | 2017-03-14 | 2019-10-08 | Ford Motor Company | Precision air flow routing devices and method for thermal spray coating applications |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3835587A (en) * | 1973-07-03 | 1974-09-17 | W Hall | Pipe cleaning apparatus and method |
| FR2572965B1 (en) * | 1984-11-09 | 1988-06-10 | Framatome Sa | METHOD AND APPARATUS FOR HAMMER COMPRESSION OF A STEAM GENERATOR TUBE SET IN A TUBULAR PLATE |
| US5160548A (en) * | 1991-09-09 | 1992-11-03 | Ohmstede Mechanical Services, Inc. | Method for cleaning tube bundles using a slurry |
| JPH05228841A (en) * | 1992-02-13 | 1993-09-07 | Mitsubishi Materials Corp | Pipe inner surface blasting device |
| JPH06270065A (en) * | 1993-03-23 | 1994-09-27 | Kawasaki Steel Corp | Blast method for steel pipe inside surface |
| US5664992A (en) * | 1994-06-20 | 1997-09-09 | Abclean America, Inc. | Apparatus and method for cleaning tubular members |
| JP3533942B2 (en) | 1998-05-08 | 2004-06-07 | 住友金属工業株式会社 | Scale removal method and equipment |
| JP4052424B2 (en) * | 2001-07-03 | 2008-02-27 | 三菱重工業株式会社 | Foreign matter removing apparatus and method |
| CN1299879C (en) * | 2001-08-08 | 2007-02-14 | 三菱重工业株式会社 | Foreign matter removnig device and method |
-
2009
- 2009-03-24 EP EP09725423.9A patent/EP2283971A4/en not_active Withdrawn
- 2009-03-24 CN CN2009801107910A patent/CN101980834A/en active Pending
- 2009-03-24 BR BRPI0910400A patent/BRPI0910400A8/en not_active Application Discontinuation
- 2009-03-24 WO PCT/JP2009/055744 patent/WO2009119540A1/en active Application Filing
- 2009-03-24 JP JP2009513490A patent/JP4400761B2/en not_active Expired - Fee Related
-
2010
- 2010-09-21 US US12/887,092 patent/US20110065363A1/en not_active Abandoned
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106102999A (en) * | 2014-02-19 | 2016-11-09 | 维尔贝莱特集团有限公司 | For carrying out the method for bead to the inside pipe wall of the curved workpieces with workpiece hole and for the nozzle unit of described method and spray booth system |
| CN106102999B (en) * | 2014-02-19 | 2018-05-08 | 维尔贝莱特集团有限公司 | Nozzle unit and spray booth system for the method for the inside pipe wall progress bead to the curved workpieces with workpiece hole and for the method |
Also Published As
| Publication number | Publication date |
|---|---|
| US20110065363A1 (en) | 2011-03-17 |
| BRPI0910400A8 (en) | 2019-01-29 |
| WO2009119540A1 (en) | 2009-10-01 |
| EP2283971A1 (en) | 2011-02-16 |
| JP4400761B2 (en) | 2010-01-20 |
| BRPI0910400A2 (en) | 2015-09-29 |
| JPWO2009119540A1 (en) | 2011-07-21 |
| EP2283971A4 (en) | 2014-03-19 |
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Application publication date: 20110223 |