EP0004106B1 - Verfahren und Vorrichtung zur Oberflächenbehandlung von Werkstücken - Google Patents

Verfahren und Vorrichtung zur Oberflächenbehandlung von Werkstücken Download PDF

Info

Publication number
EP0004106B1
EP0004106B1 EP79200093A EP79200093A EP0004106B1 EP 0004106 B1 EP0004106 B1 EP 0004106B1 EP 79200093 A EP79200093 A EP 79200093A EP 79200093 A EP79200093 A EP 79200093A EP 0004106 B1 EP0004106 B1 EP 0004106B1
Authority
EP
European Patent Office
Prior art keywords
fluid bed
abrasive
gas
nozzles
workpieces
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.)
Expired
Application number
EP79200093A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0004106A1 (de
Inventor
Werner Dr. Scheiber
Per Otto Aalrust
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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
Priority claimed from DE19782809376 external-priority patent/DE2809376A1/de
Priority claimed from DE19792904551 external-priority patent/DE2904551A1/de
Application filed by Individual filed Critical Individual
Publication of EP0004106A1 publication Critical patent/EP0004106A1/de
Application granted granted Critical
Publication of EP0004106B1 publication Critical patent/EP0004106B1/de
Expired legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B31/00—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor
    • B24B31/10—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor involving other means for tumbling of work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C3/00—Abrasive blasting machines or devices; Plants
    • B24C3/08—Abrasive blasting machines or devices; Plants essentially adapted for abrasive blasting of travelling stock or travelling workpieces
    • B24C3/10—Abrasive blasting machines or devices; Plants essentially adapted for abrasive blasting of travelling stock or travelling workpieces for treating external surfaces
    • B24C3/12—Apparatus using nozzles

Definitions

  • the invention relates to a method and a device for the surface treatment of workpieces with abrasives, preferably corundum or quartz sand, in an encapsulated container.
  • abrasives preferably corundum or quartz sand
  • the blasting medium is usually spun on in so-called compressed air dry blasting cubicles, with the on and off being controlled by a foot valve and the blasting medium being changed by means of a handle.
  • compressed air dry blasting cubicles with the on and off being controlled by a foot valve and the blasting medium being changed by means of a handle.
  • Another method consists of throwing the blasting material onto the workpieces using rapidly rotating paddle wheels. These paddle wheels can spin 100 to 200 kg of abrasive per minute at a speed of 70 to 80 m / sec onto the surfaces to be cleaned (Metall Design 23 (1969), 262-265).
  • a continuous process for the surface treatment of wire in a encapsulated container is known from US-A-1 400 585 .. wherein an abrasive is held in an air stream and directed onto the surface of the wire by nozzles.
  • the invention has for its object to avoid these and other disadvantages and workpieces, e.g. Pipes or wires, pretreated in a continuous manner by blasting with suitable blasting agents so that the surface is descaled, rusted and degreased and roughened.
  • workpieces e.g. Pipes or wires
  • This object is achieved in that the abrasive is kept in suspension in the encapsulated container by flowing gas as a fluidized bed and that ring-shaped nozzles are arranged within this fluidized bed on the surface of the workpiece, from which a fine gas stream is pressed at high pressure.
  • Inert gases can be used as the inflowing gas in the context of the invention. However, air is preferably used.
  • a prismatic, preferably rotationally symmetrical, shaped body can also be used for the beam treatment.
  • a device suitable for carrying out the invention is characterized by a fluidized bed 2, by first and second locks 9a and 9b for carrying out the workpiece to be treated, by a blower 5 for feeding gases into the lower part 3 of the fluidized bed 2, by a pressure line 7 for feeding of gases, through valves 8a and 8b and through the nozzles 10 arranged in the interior of the fluidized bed 2, through a gas outlet line 11, a separator 12 for separating gas and blasting agent with a return of the blasting agent via a third lock 18 into the fluidized bed 2 and one Discharge 13 for the fine grain into a further separator 14 and a storage container 16 for fresh blasting medium with a fourth lock 19 for feeding the blasting medium into the fluidized bed 2.
  • the device according to the invention is used for the beam treatment of prismatic or rotationally symmetrical shaped bodies instead of continuous workpieces, it is expediently also equipped with brackets 20 and 21 and with a guide carriage 22.
  • the advantages of the Ver driving and the device consist in particular in that it is possible to achieve a large increase in surface area only with a low roughness depth of the blasted workpiece without an environmental nuisance caused by dust or noise.
  • a major advantage is that there is no significant wear on individual parts of the system and that the method and the device according to the invention have a significantly lower energy consumption than the processes and systems belonging to the prior art.
  • the device according to the invention shown in FIG. 1 consists of a fluidized bed 2, through which the workpiece 1 to be blasted is passed through two locks 9a and 9b.
  • a blower 5 is used to gas 3 into the lower box 3 separated from the fluidized bed 2, e.g. Air, injected.
  • gas is pressed into the fluidized bed 2 through the locks 9a and 9b via the valves 8a and 8b, thereby preventing blasting material from escaping.
  • Compressed gas is supplied from the pressure line 7 from the nozzles 10 and is blown out of these at high pressure onto the surface of the continuous molded body 1, with blasting media being continuously entrained by the gas jet.
  • Gas and blasting agent are fed to the cyclone separator 12 via the gas outlet line 11. After the coarse grain has been separated off in the cyclone 12, this is in turn fed back into the fluidized bed 2 via the lock 18.
  • the gas with the fine grain of the abrasive is fed into the cyclone separator 14 and, after separation of the fine grain fraction, is blown out of it via the candle filter 15 built into it.
  • the fine fraction is emptied batchwise from the bottom of the fine separator 14 via the bottom valve 17.
  • the used blasting medium is supplemented from the blasting medium silo 16 via the blasting medium lock 19 and fed to the fluidized bed 2.
  • compressed air nozzles 10 compressed air of 6 atmospheres is inflated with compressed air at a distance of 15 mm from the surface of the continuous molding 1 carried out.
  • the nozzles have a diameter of 0.5 mm.
  • the treatment according to the invention achieves a scale, rust and grease-free surface in accordance with DIN 18 364, rust removal grade 3, which has an average surface roughness of 0.004 mm. A 42-fold increase in surface area is achieved. There is no dust nuisance. The noise pollution is 20 dB (A). The compressed air consumption is 12 m 3 / hour.
  • the steel tube mentioned in the exemplary embodiment is passed through a chamber, into which piano string wire crushed as blasting material with a grain size of 0.8 mm is spun onto the continuous molded body to be treated by four centrifugal wheels under otherwise identical conditions.
  • a scale-free, rust-free and grease-free surface according to DIN 18 364 rust removal grade 3 is achieved, which has an average surface roughness of 0.055 mm. An 18-fold increase in surface area is achieved.
  • the noise pollution is 96 dB (A) at a distance of one meter.
  • the steel tube mentioned in the exemplary embodiment is passed through a blasting chamber in which corundum with a grain size of 0.8 mm is blown from four blasting nozzles with compressed air of 6 atm as the carrier gas.
  • a scale-, rust- and grease-free surface according to DIN 18 364 rust removal grade 3 is achieved, which has an average surface roughness of 0.04 mm.
  • a 25-fold increase in surface area was achieved.
  • the noise pollution was 104 dB (A) at a distance of one meter from the body to be emitted. Compressed air consumption is 500 m 3 per hour. A considerable dust nuisance cannot be ruled out.
  • FIG. 2 shows the method according to the invention in its modification for rotationally symmetrical moldings.
  • Air is injected into the lower part 3 of the fluidized bed 2, thereby keeping the blasting material in the fluidized bed 2 in suspension.
  • a printing roller as used for offset printing machines as ink distribution rollers, is clamped in the holder 20 and is set in a uniform rotational movement by a suitable device. Compressed air is pressed through the pressure line 7 into the slot nozzle 10 and blows at high speed onto the surface of the rotating roller, with blasting material being carried along according to the invention.
  • the surface roughness achieved corresponds to that of embodiment 1.
  • a prismatic shaft body is inserted into a holder 21 and a ring nozzle 10, which corresponds to the cross section of the prismatic body and is supplied with compressed air through a flexible pressure line 7, is pulled over the molded body by a guide carriage 22.
  • the beam result corresponds to that of embodiment 1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cleaning In General (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Coating Apparatus (AREA)
EP79200093A 1978-03-04 1979-02-26 Verfahren und Vorrichtung zur Oberflächenbehandlung von Werkstücken Expired EP0004106B1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE2809376 1978-03-04
DE19782809376 DE2809376A1 (de) 1978-03-04 1978-03-04 Kontinuierliches verfahren und vorrichtung zur oberflaechenbehandlung von endlosformkoerpern
DE19792904551 DE2904551A1 (de) 1979-02-07 1979-02-07 Kontinuierliches verfahren und vorrichtung zur oberflaechenbehandlung von endlosformkoerpern
DE2904551 1979-02-07

Publications (2)

Publication Number Publication Date
EP0004106A1 EP0004106A1 (de) 1979-09-19
EP0004106B1 true EP0004106B1 (de) 1982-04-07

Family

ID=25773980

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79200093A Expired EP0004106B1 (de) 1978-03-04 1979-02-26 Verfahren und Vorrichtung zur Oberflächenbehandlung von Werkstücken

Country Status (6)

Country Link
US (1) US4258505A (da)
EP (1) EP0004106B1 (da)
JP (1) JPS54129597A (da)
AU (1) AU4476679A (da)
DE (1) DE2962413D1 (da)
DK (1) DK89679A (da)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4478646A (en) * 1981-07-06 1984-10-23 General Electric Company Apparatus and method for cleaning a fluidized bed gas distributor
JPS60135796A (ja) * 1983-12-23 1985-07-19 株式会社日立製作所 固体表面の汚染除去方法および装置
JPS60143879A (ja) * 1983-12-29 1985-07-30 Norio Shirafuji 無水鈑金方法
US4780993A (en) * 1985-04-05 1988-11-01 Carrier Vibrating Equipment, Inc. Method and apparatus for surface treating a workpiece
US4974368A (en) * 1987-03-19 1990-12-04 Canon Kabushiki Kaisha Polishing apparatus
US5029415A (en) * 1990-04-05 1991-07-09 T I P O M Apparatus for centrifugal hydromechanical cleaning and polishing
WO1994005461A1 (en) * 1992-08-28 1994-03-17 Whitemetal, Inc. Method for removal of surface contaminants from substrates
US5317841A (en) * 1992-08-28 1994-06-07 Whitemetal, Inc. Method for removal of surface contaminants from metal substrates
US5527203A (en) * 1992-08-28 1996-06-18 Cook; Jack R. Method for removal of surface contaminants from metal substrates
US5441441A (en) * 1992-08-28 1995-08-15 Cook; Jack R. Method for removal of surface contaminants from concrete substrates
EP0663863B1 (en) * 1992-10-08 1997-09-17 CSABAI, Julius Stephen The use of specular hematite as an impact material
US5447465A (en) * 1993-08-19 1995-09-05 United States Surgical Corporation Method of treating needle blanks
US6206755B1 (en) 1994-10-19 2001-03-27 United States Surgical Corporation Method and apparatus for making blunt needles
ATE463326T1 (de) * 2000-07-11 2010-04-15 Sintokogio Ltd Vorrichtung zur oberflächigen endbearbeitung von langgestrecktem material
DE10205285A1 (de) * 2002-02-05 2003-08-21 Edelhoff Adolf Feindrahtwerk Verfahren und Vorrichtung zur Erzeugung einer aufgerauhten Oberflächen, sowie Anwendung des Verfahrens und Verwendung einer Anlage zum Ausüben des Verfahrens
ITLU20020007A1 (it) * 2002-05-27 2002-08-26 Tommasina Vittorio Della Lucidatrice automatica di oggetti torniti realizzati in marmo, pietreo graniti.
ITMI20031386A1 (it) * 2003-07-07 2005-01-08 Forni Tecnica S R L Impianto di lavaggio per componenti meccanici.
JP5097707B2 (ja) * 2006-07-24 2012-12-12 千田建設株式会社 金属線材のスケール除去方法と装置
IT1396769B1 (it) * 2009-10-23 2012-12-14 Cmt Costr Mecc & Tec Metodo di trattamento di superfici d'acciaio in macchine casearie
JP6091784B2 (ja) * 2012-07-17 2017-03-08 株式会社東芝 原子炉圧力容器ノズル部の洗浄除染装置
DE102012025233B4 (de) * 2012-12-28 2016-06-09 Otec Präzisionsfinish GmbH Schlepp- und/oder Tauchfinishmaschine zur Oberflächenbearbeitung von Werkstücken mittels Schleif- und/oder Poliergranulat in Gegenwart eines flüssigen Bearbeitungsmediums
CN109822463B (zh) * 2019-04-22 2021-05-28 徐州新南湖科技有限公司 一种金属制品表面除锈研磨装置
CN111152139B (zh) * 2019-12-31 2021-07-13 中国计量大学 一种分离式相控空化增强磨粒微射流抛光系统
CN113828256B (zh) * 2021-11-01 2023-04-25 新疆晶硕新材料有限公司 一种在线退料的方法和装置

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US801403A (en) * 1904-11-28 1905-10-10 Gen Electric Scouring-machine.
US1400585A (en) * 1919-07-02 1921-12-20 Margaret A Washburn Sand-blast device
US1727027A (en) * 1927-04-06 1929-09-03 Charles A Dreisbach Sand-blast device
US1977516A (en) * 1930-06-18 1934-10-16 American Rolling Mill Co Abrasive cleaning mechanism and process
US2351671A (en) * 1943-01-22 1944-06-20 Standard Radial Blast Corp Scouring chamber for metal-scouring machines
US2415844A (en) * 1945-06-30 1947-02-18 George C H Perkins Attritive cleaning and finishing device
US2448316A (en) * 1945-08-24 1948-08-31 Lesavoy I Lawrence System for finishing plastic sheets
DE1167689B (de) * 1962-04-04 1964-04-09 Voigtlaender Ag Geraet zur Erzeugung feinbearbeiteter Flaechen an Werkstuecken
GB1070233A (en) * 1963-02-27 1967-06-01 Abrasive Dev Abrading machines
SU540726A1 (ru) * 1965-08-23 1976-12-30 Способ обработки деталей свободным абразивным зерном

Also Published As

Publication number Publication date
US4258505A (en) 1981-03-31
EP0004106A1 (de) 1979-09-19
AU4476679A (en) 1979-09-06
DK89679A (da) 1979-09-05
DE2962413D1 (en) 1982-05-19
JPS54129597A (en) 1979-10-08

Similar Documents

Publication Publication Date Title
EP0004106B1 (de) Verfahren und Vorrichtung zur Oberflächenbehandlung von Werkstücken
EP1353777B1 (de) Verfahren und vorrichtung zum strahlbearbeiten, insbesondere formgenauen abtragen und/oder verdichten und/oder beschichten, von festen flächen
DE102005005638B3 (de) Verfahren und Vorrichtung zum Reinigen, Aktivieren oder Vorbehandeln von Werkstücken mittels Kohlendioxidschnee-Strahlen
EP2151300B1 (de) Vorrichtung und Verfahren zum Reinigen von Gegenständen mittels Trockenschnee
DE4211465A1 (de) Verfahren zum trockenen Abscheiden, Wiedergewinnen und Aufarbeiten eines beim Spritzlackieren anfallenden Nebels aus klebrigen Lackteilchen aus dem Absaugeluftstrom
DE69318649T2 (de) Verfahren und Vorrichtung zur Staubaubsaugung einer Schleifscheibe
DE2924703A1 (de) Verfahren und vorrichtung zum entzundern von metalldraht
DE3882913T2 (de) Verfahren und Gerät zur Reinigung von polymerischen Harzteilchen.
DE19636305C1 (de) Verfahren und Vorrichtung zur Entfernung von Beschichtungen oder Belägen von Oberflächen
EP0829313A2 (de) Automatisch arbeitende Reinigungsanlage für Werkstücke
DE2810319A1 (de) Verfahren und vorrichtung zum mechanischen entzundern von metalldraht
DE2748840A1 (de) Vorrichtung und verfahren zum elektrostatischen aufspruehen von pulver, insbesondere von emaille
DE3241459C1 (de) Verfahren und Vorrichtung zum Abrunden koerniger Feststoffpartikel
DE2809376A1 (de) Kontinuierliches verfahren und vorrichtung zur oberflaechenbehandlung von endlosformkoerpern
EP2623263A1 (de) Verfahren und Vorrichtung zur Oberflächenverdichtung und Reinigung eines Metallbauteils
DE2904551A1 (de) Kontinuierliches verfahren und vorrichtung zur oberflaechenbehandlung von endlosformkoerpern
EP0594916B1 (de) Verfahren und Vorrichtung zum Reinigen von Oberflächen, insbesondere von Mauerwerk
DE19718668C2 (de) Verfahren zum Trennen und kontinuierlichen Austragen von schwer dispergierbaren Bestandteilen
DE10162151B4 (de) Verfahren und Vorrichtung zum Entgraten von Formteilen
DE4109993C2 (da)
DE3039028A1 (de) Verfahren und vorrichtung zum reinigen und entzundern der oberflaeche von heissem gut
DE1962729A1 (de) Verfahren zum Koernen von Oberflaechen fuer Flachdruckplatten
DE3821187A1 (de) Verfahren und anordnung zum entgraten von gummi- und/oder kunststoff-formteilen
EP3984697A1 (de) Vorrichtung und verfahren zum reinigen von oberflächen mittels co2-partikeln
DE10311137B4 (de) Strahlgerät

Legal Events

Date Code Title Description
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

AK Designated contracting states

Designated state(s): BE CH DE FR GB IT LU NL SE

17P Request for examination filed
ITF It: translation for a ep patent filed
GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): CH DE GB IT LU

REF Corresponds to:

Ref document number: 2962413

Country of ref document: DE

Date of ref document: 19820519

18D Application deemed to be withdrawn

Effective date: 19820129

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19830228

Ref country code: CH

Effective date: 19830228

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19830714

Year of fee payment: 5

GBPC Gb: european patent ceased through non-payment of renewal fee
REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19841101

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19881117

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT