EP1384523A1 - Kontinuierliche chromatfreie Rohrbeschichtung durch Wirbelsintern - Google Patents
Kontinuierliche chromatfreie Rohrbeschichtung durch Wirbelsintern Download PDFInfo
- Publication number
- EP1384523A1 EP1384523A1 EP03012962A EP03012962A EP1384523A1 EP 1384523 A1 EP1384523 A1 EP 1384523A1 EP 03012962 A EP03012962 A EP 03012962A EP 03012962 A EP03012962 A EP 03012962A EP 1384523 A1 EP1384523 A1 EP 1384523A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- coating
- pipe
- tube
- primer
- induction coil
- 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.)
- Granted
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/50—Multilayers
- B05D7/52—Two layers
- B05D7/54—No clear coat specified
- B05D7/546—No clear coat specified each layer being cured, at least partially, separately
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/18—Processes for applying liquids or other fluent materials performed by dipping
- B05D1/22—Processes for applying liquids or other fluent materials performed by dipping using fluidised-bed technique
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/18—Processes for applying liquids or other fluent materials performed by dipping
- B05D1/22—Processes for applying liquids or other fluent materials performed by dipping using fluidised-bed technique
- B05D1/24—Applying particulate materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
- B05D7/146—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies to metallic pipes or tubes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2254/00—Tubes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
- B05D3/0218—Pretreatment, e.g. heating the substrate
- B05D3/0245—Pretreatment, e.g. heating the substrate with induction heating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
- B05D3/0254—After-treatment
- B05D3/0281—After-treatment with induction heating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/04—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to gases
- B05D3/0406—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to gases the gas being air
- B05D3/0426—Cooling with air
Definitions
- the object of the invention was to provide a new method which is continuous Chrome-free pipe coating enables.
- Process for the continuous coating of Pipes are already known.
- the magazine "Kunststoffe", Volume 57, Issue 1, Pages 21-24 described a process by which pipes with PVC by vortex sintering be coated, however, it does not have good adhesion values and homogeneous Layer thickness distributions received. It cannot be the essential ones Meet the requirements of the automotive industry.
- the tubes are heated by medium frequency induction. Approximation formulas for the Demand for electrical energy, the coating performance of such a system and the Powder requirements are specified.
- pipe pieces can be made in a desired Length coupled into an endless strand and in the horizontal continuous process be coated on the outside with plastic powder.
- Polyamide powders are particularly suitable, especially based on polyamide 11 and polyamide 12. Powders can be used manufactured according to DE 29 06 647 (Hüls AG), with the trade name VESTOSINT (Degussa AG) Process particularly well, because they are a special due to the production in the precipitation process achieve a round grain shape.
- Adhesion promoter applied. All common types for polymers are suitable as primers, especially those for polyamides. They can be in solution, suspension or Powder form can be applied. They are particularly suitable for VESTOSINT VESTOSINT coordinated adhesion promoter. With a solvent-based adhesion promoter a solids content of approx. 8% is used, then the layer thickness of the vented primer is between 5 and 8 ⁇ m. The method according to the invention can be used uniformly Achieve layer thicknesses of 50 to 1,000 ⁇ m. Layer thicknesses of 50 to 300 are preferred ⁇ m, with the inventive method fluctuations of ⁇ 30% can be achieved can. A commercially available adhesion promoter (e.g. VESTOSINT adhesion promoter WS 5) applied. The layer thickness of the vented primer typically is between 5 and 8 microns. Becomes a solvent-based adhesion promoter used, this usually has a solids content of about 8%.
- the tubes produced using the method according to the invention are particularly suitable as Hydraulic and brake lines for e.g. the automotive industry.
- the medium frequency induction heating was chosen because it was a continuous process heating method that is easy to regulate and very quick, using the Another advantage is that the induction coil, which heats the tube through it, directly in the swirling powder can be arranged and there is no loss of heat. at 10,000 Hz and a tube wall thickness of 2 mm, heating at 300 ° C takes 1 s. at heating is even possible at lower frequencies because of the greater depth of penetration faster in front of you, at 2,000 Hz the time would only be 0.73 s for the same conditions.
- the induction coil is designed as a coiled tube and cooling water flows through it; she remains cold, just like the powder.
- the generator system consists of the machine generator, which generates the high frequency, the control cabinet with control panel, the capacitor bank and the induction coil.
- the throughput speed (feed) of the pipes depends on the pipe diameter and wall thickness, i.e. on the weight of the pipe per unit length, and on the generator power.
- the generator efficiency and the required heating of the pipe also play an important role. Since these last-mentioned influencing variables can, however, be regarded as constant or at least not very variable in a first consideration, corresponding mean numerical values can be assumed.
- N G ⁇ c p .delta.t 860 ⁇
- N the generator power in kW
- G the continuous pipe weight in kg / h
- cp the specific heat of steel ( ⁇ 0.12 kcal / kg grd.)
- ⁇ t the required temperature increase of the pipe
- ⁇ the overall efficiency of the generator system (approx. 0.6 to 0.75).
- the throughput speed V max in m / min, the generator power N in kW, the pipe outer diameter d a in mm and the pipe wall thickness s are also to be used in mm.
- the pipe coating system (Fig. 01) consists of:
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- General Induction Heating (AREA)
- Chemical Treatment Of Metals (AREA)
Abstract
Description
- Chemikalienbeständigkeit:
- nach TL 222 Punkt 5; keine Blasenbildung oder Erweichen der Kunststoffschicht aufgetreten Nach 24-stündigem Ablüften und anschließendem Wickeln um einen Dorn (360°) von 16 mm keine sichtbaren Risse oder folienartige Ablösungen des PA-Überzuges aufgetreten
- 1
- Reinigungsanlage
- 2
- Antrieb 1
- 3
- Primerstation
- 4
- Induktion 1 (Spule I - Primertrocknung)
- 5
- Induktion 2 (Spule V - Primertrocknung)
- 6
- Radiallüfter 1
- 7
- Radiallüfter 2
- 8
- Antrieb 2
- 9
- Induktion 3 (Vorwärmung)
- 10
- Auflagerolle 1
- 11
- Wirbelsinterbecken inkl. Induktion 4
- 12
- Antrieb 3
- 13
- ROHR
- 14
- Abblasdüse
- 15
- Auflagerolle 2
- 16
- Wasserbecken
- 17
- Auflagerolle 3
- 18
- Auflagerolle 4
- 19
- Antrieb 4
- 20
- Antrieb 5 (Raupenabzug)
- 21
- Hacker
Claims (10)
- Verfahren zum chromatfreien Beschichten von Rohren durch Wirbelsintern mit Hilfe von pulverförmigen, schmelzbaren Polymeren als Beschichtungsmittel, dadurch gekennzeichnet, dass man:1) in einer Vorbehandlungsanlage die Rohre reinigt,2) einen Primer auf das Rohr aufbringt,3) mit einer Mittelfrequenz-Induktionsspule den Primer einbrennt und bei Einsatz eines lösemittelhaltigen Primers das Lösemittel verdampft,4) einen Radiallüfter zum schnelleren Abführen des verdampften Lösemittels einsetzt,5) eine Mittelfrequenz-Induktionsspule zur Vorwärmung des Rohres verwendet,6) mit einem Wirbelsinterbecken mit integrierter Mittelfrequenz-Induktionsspule eine Beschichtung aufbringt,7) durch Einbauten im Wirbelsinterbecken, bestehend aus Luftdusche oberhalb des Rohres Pulveranhäufungen vermeidet und den Strömungsleitblechen unterhalb des Rohres Pulvermangel und dadurch resultierend Poren an der Unterseite des Rohres vermeidet,8) mit einer Mittelfrequenz-Induktionsspule die nicht komplett aufgeschmolzene Beschichtung glättet,9) auf einer Schmelzstrecke den anhaftenden Beschichtungsbelag durchschmelzt und glattschmelzt,10) mit einer Luftdusche die Rohroberfläche vorab abkühlt,11) durch Wasserkühlung die Beschichtung weiter abkühlt und erhärtet.
- Verfahren nach Anspruch 1,
dadurch gekennzeichnet, dass die 3 Induktionsspulen unter den Punkten 5, 6 und 8 in Abhängigkeit der Schichtdicke der Beschichtung wie folgt eingesetzt werden:
Einsatz der Induktionsspulen 5 und 8,
oder Einsatz der Induktionsspulen 5 und 6
oder Einsatz der Induktionsspulen 5, 6 und 8
oder Einsatz der Induktionsspule 6,
oder Einsatz der Induktionsspulen 6 und 8. - Verfahren nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass als Beschichtungsmittel Polyamid eingesetzt wird. - Verfahren nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass Polyamid 11 oder Polyamid 12 eingesetzt wird. - Verfahren nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass Polyamid 12 aus Fällpulver eingesetzt wird. - Verfahren nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass ein handelsüblicher Haftvermittler in Form von Suspension, Lösung oder Pulver aufgetragen wird. - Verfahren nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass die Polymerschicht 50 bis 1 000 µm beträgt und die mittlere Abweichung 30 % nicht übersteigt. - Verfahren nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass die Polymerschicht 50 bis 300 µm beträgt und die mittlere Abweichung 30 % nicht übersteigt. - Verfahren nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass die Polymerschicht 50 bis 300 µm beträgt und die mittlere Abweichung 20 % nicht übersteigt. - Chromatfrei beschichtete Rohre,
dadurch gekennzeichnet, dass auf dem Rohr eine Primerschicht aufgebracht wurde und ein wirbelfähiges, schmelzfähiges Polymer im Wirbelsinterverfahren aufgebracht wurde.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10233345A DE10233345A1 (de) | 2002-07-23 | 2002-07-23 | Kontinuierliche chromatfreie Rohrbeschichtungen durch Wirbelsintern |
DE10233345 | 2002-07-23 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1384523A1 true EP1384523A1 (de) | 2004-01-28 |
EP1384523B1 EP1384523B1 (de) | 2005-08-17 |
Family
ID=29796511
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03012962A Expired - Lifetime EP1384523B1 (de) | 2002-07-23 | 2003-06-07 | Kontinuierliche chromatfreie Rohrbeschichtung durch Wirbelsintern |
Country Status (10)
Country | Link |
---|---|
EP (1) | EP1384523B1 (de) |
JP (1) | JP4360856B2 (de) |
KR (1) | KR20040010311A (de) |
CN (1) | CN100509178C (de) |
AT (1) | ATE302069T1 (de) |
BR (1) | BR0302592A (de) |
CA (1) | CA2435690A1 (de) |
DE (2) | DE10233345A1 (de) |
ES (1) | ES2246443T3 (de) |
MX (1) | MXPA03006198A (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2236217A1 (de) | 2009-04-02 | 2010-10-06 | Babcock Borsig Service GmbH | Verfahren und Vorrichtung zum Beschichten von metallischen Rohren oder anderen langen Bauteilen mit begrenztem Querschnitt |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102012101651A1 (de) | 2012-02-29 | 2013-08-29 | Thyssenkrupp Rothe Erde Gmbh | Verfahren zur Herstellung eines Wälzlagerkäfigs für ein Axial-Radial-Wälzlager sowie Axial-Radial-Wälzlager |
DE102012101649A1 (de) * | 2012-02-29 | 2013-08-29 | Thyssenkrupp Rothe Erde Gmbh | Verfahren zur Herstellung eines Wälzlagerkäfigs, insbesondere für Großwälzlager sowie Vorrichtung zur Durchführung des Verfahrens |
IT201700047436A1 (it) * | 2017-05-03 | 2018-11-03 | Ima Spa | Metodo per rivestire materiale sfuso |
CN110076059B (zh) * | 2019-03-18 | 2021-11-05 | 北京***汇技术有限公司 | 一种卡簧挂点补粉方法 |
CN112893061B (zh) * | 2021-01-18 | 2022-02-25 | 南京和涛塑胶有限公司 | 一种n-hap热浸塑钢管的生产工艺 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3108022A (en) * | 1960-05-09 | 1963-10-22 | Polymer Processes Inc | Apparatus for coating an elongate body with fluidized coating material |
US3560239A (en) * | 1964-03-25 | 1971-02-02 | United States Steel Corp | Method of coating an elongated body |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1288125C (zh) * | 2003-01-16 | 2006-12-06 | 张小燕 | 一种利用鸡蛋壳制备丙酸钙的方法 |
-
2002
- 2002-07-23 DE DE10233345A patent/DE10233345A1/de not_active Withdrawn
-
2003
- 2003-06-07 EP EP03012962A patent/EP1384523B1/de not_active Expired - Lifetime
- 2003-06-07 ES ES03012962T patent/ES2246443T3/es not_active Expired - Lifetime
- 2003-06-07 AT AT03012962T patent/ATE302069T1/de not_active IP Right Cessation
- 2003-06-07 DE DE50300986T patent/DE50300986D1/de not_active Expired - Lifetime
- 2003-07-10 MX MXPA03006198A patent/MXPA03006198A/es not_active Application Discontinuation
- 2003-07-21 BR BR0302592-6A patent/BR0302592A/pt not_active IP Right Cessation
- 2003-07-21 CA CA002435690A patent/CA2435690A1/en not_active Abandoned
- 2003-07-22 CN CNB031328474A patent/CN100509178C/zh not_active Expired - Fee Related
- 2003-07-22 KR KR1020030050140A patent/KR20040010311A/ko not_active Application Discontinuation
- 2003-07-23 JP JP2003200680A patent/JP4360856B2/ja not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3108022A (en) * | 1960-05-09 | 1963-10-22 | Polymer Processes Inc | Apparatus for coating an elongate body with fluidized coating material |
US3560239A (en) * | 1964-03-25 | 1971-02-02 | United States Steel Corp | Method of coating an elongated body |
Non-Patent Citations (1)
Title |
---|
GEMMER R: "Aussenbeschichten von Rohren mit PVC durch Wirbelsintern", KUNSTSTOFFE, vol. 57, no. Heft 1, 1967, pages 21 - 24, XP009018626 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2236217A1 (de) | 2009-04-02 | 2010-10-06 | Babcock Borsig Service GmbH | Verfahren und Vorrichtung zum Beschichten von metallischen Rohren oder anderen langen Bauteilen mit begrenztem Querschnitt |
Also Published As
Publication number | Publication date |
---|---|
CN100509178C (zh) | 2009-07-08 |
DE10233345A1 (de) | 2004-02-12 |
CN1488447A (zh) | 2004-04-14 |
JP2004105949A (ja) | 2004-04-08 |
ATE302069T1 (de) | 2005-09-15 |
DE50300986D1 (de) | 2005-09-22 |
BR0302592A (pt) | 2004-08-24 |
CA2435690A1 (en) | 2004-01-23 |
EP1384523B1 (de) | 2005-08-17 |
MXPA03006198A (es) | 2004-12-03 |
JP4360856B2 (ja) | 2009-11-11 |
KR20040010311A (ko) | 2004-01-31 |
ES2246443T3 (es) | 2006-02-16 |
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