EP0557912B1 - Verfahren zum Entfetten von metallischen Gegenständen - Google Patents
Verfahren zum Entfetten von metallischen Gegenständen Download PDFInfo
- Publication number
- EP0557912B1 EP0557912B1 EP93102701A EP93102701A EP0557912B1 EP 0557912 B1 EP0557912 B1 EP 0557912B1 EP 93102701 A EP93102701 A EP 93102701A EP 93102701 A EP93102701 A EP 93102701A EP 0557912 B1 EP0557912 B1 EP 0557912B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- degreasing
- copper pipes
- medium
- copper
- pipes
- 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 - Lifetime
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
- C11D7/22—Organic compounds
- C11D7/24—Hydrocarbons
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G5/00—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents
- C23G5/02—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents using organic solvents
- C23G5/024—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents using organic solvents containing hydrocarbons
Definitions
- the invention relates to a method for degreasing hard and semi-hard plumbing pipes made of copper with a mixture Halogen free aliphatic hydrocarbons existing liquid Degreasing agent.
- a process for cleaning and drying objects using Non-halogenated solvents are basically from DE-A-39 35 032 known. With this procedure, the cleaned items dried by warm air, the air flow then is dried and reused.
- the object of the invention is to provide a method to put with the hard and semi-hard copper installation pipes can be degreased economically and in particular environmentally friendly.
- Halogen-free aliphatic hydrocarbons and mixtures thereof basically known as a so-called cold cleaner and are under various trade names offered on the market.
- the process according to the invention can be used to produce fat-free surfaces of hard and semi-hard copper installation pipes in one extremely achieve economical and environmentally friendly way.
- the halogen and aromatic free offered the trade name "ELMOTAN LB-850" Hydrocarbon mixture can be used.
- This fluid Degreaser evaporates in the temperature range between 35 and 55 ° C relatively quickly, although there is a stable flash point above 58 ° C.
- the degreasing agent is according to the Hazardous Substances Ordinance does not require labeling.
- the lubricant or residual carbon content on the inner surface of the copper pipes had decreased to less than 0.15 mg / dm 2 after the two-stage degreasing treatment.
- the degreasing bath with a distillation system can be particularly advantageous be coupled, with a subset continuously of the degreasing agent contaminated with drawing oil regenerates and is returned to the degreasing bath.
- a subset continuously of the degreasing agent contaminated with drawing oil regenerates and is returned to the degreasing bath.
- a vacuum still can be used for cleaning to be carried out at the lowest possible temperatures.
- the degreasing of the copper pipes with the cold degreasing agent allows further reduce the degreasing agent consumption and the Fat absorption capacity of the tempered degreasing bath even better to take advantage of.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Metallurgy (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Wood Science & Technology (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
- Catalysts (AREA)
Description
Claims (6)
- Verfahren zum Entfetten von harten und halbharten Installationsrohren aus Kupfer mit einem aus einem Gemisch halogenfreier aliphatischer Kohlenwasserstoffe bestehenden flüssigen Entfettungsmittel, bei welchem die Entfettung der Kupferrohre zweistufig durchgeführt wird, wobei in einer ersten Stufe mit dem kalten Entfettungsmittel vorentfettet wird und sich in einer zweiten Stufe eine kurzzeitige Behandlung mit dem auf eine im Bereich von 40 bis 55 °C liegenden Temperatur erwärmten Entfettungsmittel anschließt, und daß anschließend die entfetteten Kupferrohre getrocknet werden.
- Verfahren zum Entfetten von Kupferrohren nach Anspruch 1, dadurch gekennzeichnet, daß die zweite Behandlungsstufe in einem Entfettungsbad durchgeführt wird.
- Verfahren zum Entfetten von Kupferrohren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß für den Trocknungsprozeß ein Luftstrom verwendet wird.
- Verfahren zum Entfetten von Kupferrohren nach Anspruch 3, dadurch gekennzeichnet, daß der Luftstrom erwärmt wird.
- Verfahren zum Entfetten von Kupferrohren mit einem flüssigen Entfettungsmittel nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß das mit Ziehöl verunreinigte Entfettungsmittel in einer angeschlossenen Reinigungsanlage regeneriert und das gereinigte Entfettungsmittel erneut verwendet bzw. dem Behandlungsbad zugeführt wird.
- Verfahren zum Entfetten von Kupferrohren nach Anspruch 5, dadurch gekennzeichnet, daß zur Regenierung des verunreinigten Entfettungsmittels eine Vakuumdestille verwendet wird.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4206058A DE4206058A1 (de) | 1992-02-27 | 1992-02-27 | Verfahren zum entfetten von langgestreckten metallischen gegenstaenden |
| DE4206058 | 1992-02-27 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0557912A1 EP0557912A1 (de) | 1993-09-01 |
| EP0557912B1 true EP0557912B1 (de) | 1998-08-12 |
Family
ID=6452738
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP93102701A Expired - Lifetime EP0557912B1 (de) | 1992-02-27 | 1993-02-20 | Verfahren zum Entfetten von metallischen Gegenständen |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0557912B1 (de) |
| AT (1) | ATE169693T1 (de) |
| DE (2) | DE4206058A1 (de) |
| ES (1) | ES2121879T3 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4316144A1 (de) * | 1993-05-14 | 1994-11-17 | Siemens Ag | Verfahren und Einrichtung zur Reinigung eines gezogenen Drahtes |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57126978A (en) * | 1981-01-29 | 1982-08-06 | Mitsubishi Heavy Ind Ltd | Method and apparatus for continuously degreasing and washing metal strip |
| DE3537619A1 (de) * | 1985-10-23 | 1987-04-23 | Bayer Ag | Mittel fuer die kaltwaesche |
| JPH01219150A (ja) * | 1988-02-26 | 1989-09-01 | Furukawa Electric Co Ltd:The | 銅管の光輝焼鈍方法 |
| DE3935032C3 (de) * | 1989-10-20 | 2000-08-24 | Zinser Raimund | Verfahren und Vorrichtung zum Reinigen und Trocknen von Gegenständen |
| JPH03146597A (ja) * | 1989-11-01 | 1991-06-21 | Henkel Hakusui Kk | プリント基板の洗浄用組成物 |
| WO1991019831A1 (en) * | 1990-06-11 | 1991-12-26 | Martin Marietta Corporation | Cycloparaffins containing cleaning composition and method of using them |
| US5096501A (en) * | 1990-08-27 | 1992-03-17 | E. I. Du Pont De Nemours & Company | Environmentally safe cleaning process and cleaning composition useful therein |
-
1992
- 1992-02-27 DE DE4206058A patent/DE4206058A1/de not_active Withdrawn
-
1993
- 1993-02-20 DE DE59308852T patent/DE59308852D1/de not_active Expired - Fee Related
- 1993-02-20 ES ES93102701T patent/ES2121879T3/es not_active Expired - Lifetime
- 1993-02-20 EP EP93102701A patent/EP0557912B1/de not_active Expired - Lifetime
- 1993-02-20 AT AT93102701T patent/ATE169693T1/de not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| DE59308852D1 (de) | 1998-09-17 |
| EP0557912A1 (de) | 1993-09-01 |
| ATE169693T1 (de) | 1998-08-15 |
| ES2121879T3 (es) | 1998-12-16 |
| DE4206058A1 (de) | 1993-09-02 |
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