WO2002024406A1 - Dispositif de conditionnement par meulage de la surface interieure d'un reservoir de produits chimiques - Google Patents

Dispositif de conditionnement par meulage de la surface interieure d'un reservoir de produits chimiques Download PDF

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Publication number
WO2002024406A1
WO2002024406A1 PCT/FI2001/000824 FI0100824W WO0224406A1 WO 2002024406 A1 WO2002024406 A1 WO 2002024406A1 FI 0100824 W FI0100824 W FI 0100824W WO 0224406 A1 WO0224406 A1 WO 0224406A1
Authority
WO
WIPO (PCT)
Prior art keywords
grinding
frame
tank
supporting
attached
Prior art date
Application number
PCT/FI2001/000824
Other languages
English (en)
Inventor
Raimo Siipo
Original Assignee
Suomen Säiliöhionta Oy
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Suomen Säiliöhionta Oy filed Critical Suomen Säiliöhionta Oy
Priority to DE60124752T priority Critical patent/DE60124752T2/de
Priority to EP01967396A priority patent/EP1330337B1/fr
Priority to AU2001287782A priority patent/AU2001287782A1/en
Publication of WO2002024406A1 publication Critical patent/WO2002024406A1/fr

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B27/00Other grinding machines or devices
    • B24B27/033Other grinding machines or devices for grinding a surface for cleaning purposes, e.g. for descaling or for grinding off flaws in the surface
    • B24B27/04Grinding machines or devices in which the grinding tool is supported on a swinging arm
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B27/00Other grinding machines or devices
    • B24B27/033Other grinding machines or devices for grinding a surface for cleaning purposes, e.g. for descaling or for grinding off flaws in the surface
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B5/00Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
    • B24B5/36Single-purpose machines or devices
    • B24B5/363Single-purpose machines or devices for grinding surfaces of revolution in situ
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B5/00Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
    • B24B5/36Single-purpose machines or devices
    • B24B5/40Single-purpose machines or devices for grinding tubes internally

Definitions

  • the invention is related to a device for conditioning the inner surface of a chemical tank by grinding.
  • material residues are gathered on the inner surface of a chemical tank which material residues may be removed only with a more efficient cleaning of the surface, either chemical, mechanical or a combination thereof. Material residues may be produced especially as the same tank is used for transport of various chemicals. Despite of washing, the small amounts of chemicals remaining on surfaces may react with each other and form a layer of residues on a surface. Material residues are gathered also in tanks used for transport and storage of only one chemical, depending on the quality of a chemical, possible drying of a chemical on the walls of a discharging tank or efficiency of a normal cleaning.
  • Chemical tanks are normally made of acid-resistant steel, today normally of cold-rolled steel but earlier often also of hot-rolled steel.
  • the microstructure of the surface is often unregularly granular and porous, and the surface of a hot-rolled steel is somewhat more porous than that of a cold-rolled steel.
  • surface roughness is typically of the order of 0.2 Ra. Chemicals adhere easily to this kind of surface, and it is not advantageous as cleaning is concerned. Therefore, conditioning of the surface is profitable also immediately after manufacturing of a tank before bringing it into use.
  • An object of the invention is to present a device by which the grinding of the inner surface of a chemical tank may be started quickly and carried out rapidly and as completely as possible and by which a preferable grinding finish in view of keeping the surface clean is achieved.
  • the device according to the invention for conditioning the inner surface of a chemical tank by grinding is characterized in that which is defined by the accompanying claims.
  • the device according to the invention consists of only a few parts which may brought into a tank through a manhole. Mounting and dismounting of the device may be accomplished quickly.
  • the device according to the invention is provided with a programmable control so that it carries out the grinding steps inside a tank automatically, and the operation maybe controlled from outside of the tank.
  • the device is compact, and thereby essentially the whole, also the ends, of the inner surface may be ground.
  • a regular and uniform grinding finish may be achieved throughout the surface, the grinding finish having generally the direction of the cross-section of a tank.
  • a suitable roughness of a ground surface may be of the order of 0.8 Ra or of the order of 0.3 Ra, for example.
  • conditioning of the tanks may be carried out quickly and efficiently. Conditioning may be done after normal careful washing of a tank. The device makes easier to maintain classification of tanks. In comparison with chemical conditioning methods, the environmental drawbacks are small.
  • Fig. 1 presents a schematical front view of an embodiment of the device according to the invention
  • Fig. 2 presents a side view of the device of Fig. 1 and shows schematically a possible way of carrying out grinding with the device;
  • FIG. 3 presents schematically a grinding finish produced by a device according to the invention
  • Fig. 4 presents a schematical front view of another embodiment of the device according to the invention
  • Fig. 5 illustrates installation of the device according to the invention into a chemical tank to be conditioned
  • Fig. 6 illustrates accomplishment of grinding work with the device according to the invention.
  • the device of Figs. 1 and 2 is meant for cleaning and conditioning horizontal tanks, like transport tanks.
  • a frame 5 from which telescopically adjustable legs 6, 7 and 6', T with the angle of 120 degrees therebetween extend.
  • the frame and legs form a three-branched structure supporting itself on the wall 2 of the tank which structure may be set and adjusted so that the hub 12 of the structure stays on the central axis Al of the cylindrical tank.
  • the legs directed upwards in the figure include actuators 8 by means of which the legs may be shortened or lengthened as indicated by arrows LI and L2 and pressed against the wall 2 of the tank 1.
  • the third leg directed downwards is set to a proper length according to the radius of the tank.
  • a roller is attached at the end of each leg, respectively, the rolling direction being the longitudinal direction (arrow R3 in Fig. 2).
  • the rollers are rotated by corresponding drivers 10.
  • the driver may be a squirrel-cage motor coupled to the roller by means of a chain with suitable transmission ratio, for example.
  • An arm 11 is connected pivotally, as indicated by arrow Rl, to the hub 12 of the structure, grinding means 14 being attached at the end of the beam in such a way that a grinding wheel 15 is rotating in the direction of the tank's cross-section against the inner surface 3 of the tank.
  • the arm 11 of the grinding means is driven by an actuator 13.
  • Fig. 2 illustrates at the same time an embodiment of the method of the invention.
  • the grinding is carried out slice by slice or strip by strip, the slices or strips being indicated by broken line in Fig. 2.
  • the grinding is carried out by means of a grinding wheel with a width of 4 centimeters, for example, so that the device is moved 2 centimeters at a time, whereby each point is ground twice.
  • strips n and n+1 are ground.
  • strips n+1 and n+2 are to be ground, and so on.
  • nineteen steps forward have been taken and strips n+19 and n+20 are now ground.
  • the device is moved at a next strip to be ground by controlling rollers 9.
  • the device is stopped at a strip which is then ground by rotating the grinding device around in a cross-sectional plane of the tank with a suitable speed.
  • the grinding wheel is rotating in a cross-sectional plane.
  • Working speed rotating speed of the grinding wheel
  • rotating speed of the grinding wheel and grinding pressure are adjusted so that adequate grinding and good grinding finish are achieved by one run. As the quality of a surface to be conditioned may vary, values of these parameters possibly must be adjusted during grinding.
  • Fig. 3 presents a wall 3 the grinding of which is carried out from left to right.
  • the ground strips and strips to be ground are indicated by broken line.
  • the hatch on the ground strips 16i to 16q of the conditioned surface 3' at the left illustrates grinding finish.
  • the grinding is going on at 17 to the direction of arrow Ml.
  • the second grinding of strip 16p and the first grinding of strip 16q are concerned.
  • a ground surface is achieved in which the grinding finish is throughout regular and uniform and has the direction of the cross-section of the tank.
  • a suitable roughness of a conditioned surface is of the order of 0.8 Ra.
  • the grinding may be made also to roughness value 0.3 Ra or even finer.
  • a device By a device according to Figs. 1 and 2, chemical transport tanks have been ground using a urethane body silicon carbide grinding wheel with the diameter of 150 millimeters and thickness, i.e. width of a strip to be ground, of 50 millimeters.
  • the device is advantageously easy to mount and dismount so that it may be brought as parts into a tank through a conventional manhole (e.g. with a diameter of 400 millimeters).
  • the parts maybe: the frame, three legs with accessories and grinding unit.
  • the device is also provided with a programmable control (not shown in Figs. 1 and 2) by means of which it may be got to carry out grinding automatically. Controlling is done from outside of a tank.
  • Figs. 4 and 5 present a further developed embodiment of the device according to the invention and installation of the device through a manhole 53 into a tank 1 to be conditioned.
  • the device is brought into the tank as three parts which are: the leg 26 to be set against the bottom of the tank, the frame part 19 including also the other two legs, and the grinding unit 33 including the grinding arm 34 and the proper grinding device 40.
  • Fig. 5 illustrates the installation of the device at the stage in which the support leg 26 is brought into the tank and the introduction of the frame part 19 through the manhole into the tank by means of a chain 52 connected to a crane is going on.
  • the grinding unit 33 is still waiting outside the tank.
  • the control unit 50 stays outside the tank, and necessary electric and pneumatic lines 51 are connected to the device in the tank.
  • the support leg 26 may be adjusted to a suitable length as indicated by arrow L so that the axle 32 of the device is placed at the centre of the tank. Therefore, the leg 26 is already provided with a scale according to the radius of a tank.
  • the leg is provided with a linear guide arrangement, by means of which the part 30 is sliding telescopically in the body of the leg, and for locking e.g. locking shoes are used by means of levers 31.
  • a socket part 28 adapted to receive a corresponding part of the frame 19.
  • the frame includes threaded holes and the socket part of the leg includes screws 29 provided with levers for quick fastening.
  • the grinding arm 34 is attached by member 36 at the end of the axle 32. These parts are provided with corresponding quick-locking members by means of which firm and reliable fastening is obtained (conventional technique which is not described here in detail).
  • the arm is rotated as indicated by arrow R (Fig. 4) by an electric motor 54 located at the other side of the frame (Fig. 6). Connections of the electric and pneumatic lines (connectors 39) to the arm and other parts of the device restrict rotation so that it is limited to 1.5 to 3 turns depending on the solution used for connections.
  • Inside the arm there are a conventional guide and screw which are indicated by reference sign 35 but are not described here in further detail.
  • the grinding device 40 is by means of the arm 42 coupled with an as well conventional mechanism 41 to be moved on the screw and guide.
  • the screw is driven by an electric motor 37 placed at the other end of the arm 34 by means of suitable transmission means 38, e.g. a chain.
  • the grinding wheel 46 is rotated by a controlled electric motor 44, and the pressure with which it is set against the wall is determined by a controlled pneumatic cylinder 45.
  • the pneumatics are provided with a feedback in which the current of the motor is measured and the pressure is adjusted accordingly.
  • Fig. 6 presents a side view of the accomplishment of grinding with the device of Figs. 4 and 5.
  • the branch 20b of the frame is presented in section.
  • the device is set perpendicular to the axis of a tank on the legs and rollers 23. With each step, each roller is driven the same distance forward or backward.
  • the device is provided with a detector which is reset during installation (a tank may be in an inclined position) and which detects tilting of the device from the initial position thereof and switces the device automatically off if the tilting for any reason goes over a certain limit.
  • Fig. 6 illustrates quite well how small a longitudinal space the device needs in operation and how the jacket up to the ends and also the end surfaces can be ground.
  • the device is grinding in the way described above with reference to Fig. 2, for example.
  • the grinding device 40 is on the arm 42 and joint 43 in the straight position, and the axis of the grinding wheel 46 is parallel to the axis of the tank, h the middle in Fig. 6, the grinding is advanced close to the end 55 of the tank.
  • the grinding device is rotated at the joint 43 so that the axis of the grinding wheel is directed crosswise in relation to the axis of the tank, and at the same time the grinding device is tilted at the joint so that the end surface can be ground.
  • the grinding of the end surface is advanced closer to the centre thereof and the grinding device is tilted more so that it extends approximately perpendicularly to the surface. Therefore, suitable parameter values must be set separately for the end surface grinding and often it is also prefereable to use another type of grinding wheel than with grinding the jacket.
  • the grinding device may be turned to this position also during grinding the jacket.
  • roller means here a roller, wheel or corresponding device which may be installed at the end of a support leg and be provided with a controlled actuator.
  • the invention may vary within the scope of the accompanying claims.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Grinding-Machine Dressing And Accessory Apparatuses (AREA)

Abstract

Cette invention concerne un dispositif de conditionnement par meulage de la surface intérieure d'un réservoir pour produits chimiques. Ce dispositif, qui comprend des moyens de maintien du cadre (19) contre la paroi (3) du réservoir et des moyens rotatifs de meulage (33, 40) fixés au cadre, se caractérise en ce que lesdits moyens de maintien du cadre (19) se composent pour l'essentiel de trois jambages (26, 30 ; 20a, 21 ; 20b, 21) à l'extrémité desquels est fixé un galet (23) à entraînement régulé par moteur (24, 25), lequel fait se déplacer le dispositif sur la paroi intérieure (2, 3) du réservoir au gré de la commande du moteur. Selon un mode de réalisation préféré, le cadre et les moyens de maintien se subdivisent en deux parties, dont l'une comprend un jambage avec les accessoires (26), et l'autre le cadre et les deux autres jambages avec les accessoires (19, 20, 21, 22, 23, 24, 25, 32, 54).
PCT/FI2001/000824 2000-09-20 2001-09-20 Dispositif de conditionnement par meulage de la surface interieure d'un reservoir de produits chimiques WO2002024406A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE60124752T DE60124752T2 (de) 2000-09-20 2001-09-20 Vorrichtung zur konditionierung der innenfläche eines chemischen tanks durch schleifen
EP01967396A EP1330337B1 (fr) 2000-09-20 2001-09-20 Dispositif de conditionnement par meulage de la surface interieure d'un reservoir de produits chimiques
AU2001287782A AU2001287782A1 (en) 2000-09-20 2001-09-20 Device for conditioning inner surface of chemical tank by grinding

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20002079 2000-09-20
FI20002079A FI20002079A (fi) 2000-09-20 2000-09-20 Menetelmä ja laite kemikaalisäiliön sisäpinnan kunnostamiseksi

Publications (1)

Publication Number Publication Date
WO2002024406A1 true WO2002024406A1 (fr) 2002-03-28

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI2001/000824 WO2002024406A1 (fr) 2000-09-20 2001-09-20 Dispositif de conditionnement par meulage de la surface interieure d'un reservoir de produits chimiques

Country Status (7)

Country Link
EP (1) EP1330337B1 (fr)
AT (1) ATE345899T1 (fr)
AU (1) AU2001287782A1 (fr)
DE (1) DE60124752T2 (fr)
ES (1) ES2277606T3 (fr)
FI (1) FI20002079A (fr)
WO (1) WO2002024406A1 (fr)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104308686A (zh) * 2014-10-22 2015-01-28 黄河科技学院 一种用于环形内角焊缝的磨整设备
CN104889872A (zh) * 2014-03-08 2015-09-09 吴鹏志 支架式内圆精磨抛光机
EP2667992A4 (fr) * 2011-01-27 2016-02-10 Oceaneering Mechanica As Appareil d'usinage
CN106181711A (zh) * 2016-08-24 2016-12-07 孙树峰 一种探入式罐体内壁柔性抛光装置
CN106553112A (zh) * 2014-07-27 2017-04-05 胡妍 石油钻杆表面除锈装置
CN106625057A (zh) * 2016-09-23 2017-05-10 重庆市汇畅钢管制造有限公司 管道口内壁链条式三角打磨机
CN107030576A (zh) * 2017-05-05 2017-08-11 成都大漠石油技术有限公司 清除接箍内孔壁锈蚀的机构
CN108274368A (zh) * 2018-02-06 2018-07-13 成都科盛石油科技有限公司 一种运用于石油管道内壁的清洁装置
CN108515394A (zh) * 2018-03-15 2018-09-11 温州大学瓯江学院 回转体容器打磨加工方法
CN108890493A (zh) * 2018-07-06 2018-11-27 严世君 一种管道智能除锈装置
CN110587415A (zh) * 2019-10-09 2019-12-20 达英科(南京)设备有限公司 一种管道内壁变径打磨装置
CN110774073A (zh) * 2019-11-08 2020-02-11 张志杰 一种管件内外打磨装置
CN111331488A (zh) * 2020-03-25 2020-06-26 耿荣 一种钢管回收利用装置
CN112318236A (zh) * 2020-10-20 2021-02-05 高建文 一种用于长管件内壁加工的高精度研磨设备
CN114102294A (zh) * 2021-10-30 2022-03-01 全南县超亚科技有限公司 一种电机壳打磨装置

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CN101234477B (zh) * 2008-03-05 2010-04-14 重庆三磨海达磨床有限公司 一种用于大型容器的多功能磨削装置及磨削方法
CN103506903B (zh) * 2013-10-30 2015-09-30 江苏乐基重工机械有限公司 管内壁磨削抛光装置
CN108838846B (zh) * 2018-07-11 2019-12-13 祖全达 一种汽车轮毂法兰盘用手持式螺纹孔内壁除锈装置
CN110774068B (zh) * 2019-11-08 2021-08-20 天津源泰德润钢管制造集团有限公司 一种建筑用钢管表面打磨处理装置
CN111604788B (zh) * 2020-06-05 2021-12-21 东台金良媛科技有限公司 一种螺母内螺纹处理加工设备
CN111702640A (zh) * 2020-07-17 2020-09-25 缪静 一种管道内壁除锈装置

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US2403363A (en) * 1945-02-02 1946-07-02 Jr Edward S Hanson Cylinder ridge grinder
US2798340A (en) * 1955-09-22 1957-07-09 Ryman Engineering Company Apparatus for grinding internal surfaces
US2828586A (en) * 1955-06-29 1958-04-01 Buss Ag Arrangement for grinding the inside walls of cylindrical containers
US2931146A (en) * 1958-08-18 1960-04-05 M J Crose Mfg Co Inc Apparatus for grinding pipe ends preparatory to interconnection by welding
CH441028A (de) * 1965-07-08 1967-07-31 Alpha Ag Werkstaette Fuer Elek Feinbearbeitungsvorrichtung
SE409301B (sv) * 1976-08-30 1979-08-13 Asea Atom Ab Maskin for invendig bearbetning av ror spec for avlegsnande av en invendig vulst vid en svetsskarv
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US4327526A (en) * 1980-06-23 1982-05-04 Combustion Engineering, Inc. Apparatus for grinding the internal walls of pipes
DE3446055A1 (de) * 1984-12-18 1986-06-26 Karl Dr. 7530 Pforzheim Elbel Verfahren und vorrichtung zum schleifen der innenflaechen grosslumiger gerader und gekruemmter rohre
US4707944A (en) * 1986-02-18 1987-11-24 Parsons Edward K Apparatus for honing a cylinder
US4934109A (en) * 1989-06-01 1990-06-19 Brody Allred Method and apparatus for grinding the edge of a pipe

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2403363A (en) * 1945-02-02 1946-07-02 Jr Edward S Hanson Cylinder ridge grinder
US2828586A (en) * 1955-06-29 1958-04-01 Buss Ag Arrangement for grinding the inside walls of cylindrical containers
US2798340A (en) * 1955-09-22 1957-07-09 Ryman Engineering Company Apparatus for grinding internal surfaces
US2931146A (en) * 1958-08-18 1960-04-05 M J Crose Mfg Co Inc Apparatus for grinding pipe ends preparatory to interconnection by welding
CH441028A (de) * 1965-07-08 1967-07-31 Alpha Ag Werkstaette Fuer Elek Feinbearbeitungsvorrichtung
SE409301B (sv) * 1976-08-30 1979-08-13 Asea Atom Ab Maskin for invendig bearbetning av ror spec for avlegsnande av en invendig vulst vid en svetsskarv
DE2929024A1 (de) * 1979-07-16 1981-02-05 Mannesmann Ag Vorrichtung zum innenschleifen von rohren
US4327526A (en) * 1980-06-23 1982-05-04 Combustion Engineering, Inc. Apparatus for grinding the internal walls of pipes
DE3446055A1 (de) * 1984-12-18 1986-06-26 Karl Dr. 7530 Pforzheim Elbel Verfahren und vorrichtung zum schleifen der innenflaechen grosslumiger gerader und gekruemmter rohre
US4707944A (en) * 1986-02-18 1987-11-24 Parsons Edward K Apparatus for honing a cylinder
US4934109A (en) * 1989-06-01 1990-06-19 Brody Allred Method and apparatus for grinding the edge of a pipe

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2667992A4 (fr) * 2011-01-27 2016-02-10 Oceaneering Mechanica As Appareil d'usinage
CN104889872A (zh) * 2014-03-08 2015-09-09 吴鹏志 支架式内圆精磨抛光机
CN104889872B (zh) * 2014-03-08 2017-07-11 吴鹏志 支架式内圆精磨抛光机
CN106553112A (zh) * 2014-07-27 2017-04-05 胡妍 石油钻杆表面除锈装置
CN104308686A (zh) * 2014-10-22 2015-01-28 黄河科技学院 一种用于环形内角焊缝的磨整设备
CN106181711A (zh) * 2016-08-24 2016-12-07 孙树峰 一种探入式罐体内壁柔性抛光装置
CN106181711B (zh) * 2016-08-24 2018-04-06 孙树峰 一种探入式罐体内壁柔性抛光装置
CN106625057A (zh) * 2016-09-23 2017-05-10 重庆市汇畅钢管制造有限公司 管道口内壁链条式三角打磨机
CN107030576A (zh) * 2017-05-05 2017-08-11 成都大漠石油技术有限公司 清除接箍内孔壁锈蚀的机构
CN108274368A (zh) * 2018-02-06 2018-07-13 成都科盛石油科技有限公司 一种运用于石油管道内壁的清洁装置
CN108515394A (zh) * 2018-03-15 2018-09-11 温州大学瓯江学院 回转体容器打磨加工方法
CN108890493A (zh) * 2018-07-06 2018-11-27 严世君 一种管道智能除锈装置
CN110587415A (zh) * 2019-10-09 2019-12-20 达英科(南京)设备有限公司 一种管道内壁变径打磨装置
CN110587415B (zh) * 2019-10-09 2021-07-20 达英科(南京)设备有限公司 一种管道内壁变径打磨装置
CN110774073A (zh) * 2019-11-08 2020-02-11 张志杰 一种管件内外打磨装置
CN110774073B (zh) * 2019-11-08 2021-05-04 义乌市思淇工业设计有限公司 一种管件内外打磨装置
CN111331488A (zh) * 2020-03-25 2020-06-26 耿荣 一种钢管回收利用装置
CN111331488B (zh) * 2020-03-25 2021-04-09 上海能利实业有限公司 一种钢管回收利用装置
CN112318236A (zh) * 2020-10-20 2021-02-05 高建文 一种用于长管件内壁加工的高精度研磨设备
CN114102294A (zh) * 2021-10-30 2022-03-01 全南县超亚科技有限公司 一种电机壳打磨装置

Also Published As

Publication number Publication date
DE60124752D1 (de) 2007-01-04
EP1330337B1 (fr) 2006-11-22
AU2001287782A1 (en) 2002-04-02
FI20002079A0 (fi) 2000-09-20
FI20002079A (fi) 2002-03-21
DE60124752T2 (de) 2007-09-13
ES2277606T3 (es) 2007-07-16
ATE345899T1 (de) 2006-12-15
EP1330337A1 (fr) 2003-07-30

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