GB1407269A - Acid cleaning bath - Google Patents
Acid cleaning bathInfo
- Publication number
- GB1407269A GB1407269A GB5198472A GB5198472A GB1407269A GB 1407269 A GB1407269 A GB 1407269A GB 5198472 A GB5198472 A GB 5198472A GB 5198472 A GB5198472 A GB 5198472A GB 1407269 A GB1407269 A GB 1407269A
- Authority
- GB
- United Kingdom
- Prior art keywords
- bath
- concentrate
- per cent
- cleaning
- accelerator
- 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
Links
Classifications
-
- 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
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
- C23G1/12—Light metals
- C23G1/125—Light metals aluminium
-
- 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
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
- Detergent Compositions (AREA)
Abstract
1407269 Metal cleaning bath BASF WYANDOTTE CORP 10 Nov 1972 [11 Nov 1971] 51984/72 Heading C7E An aqueous bath for cleaning metals contains (a) FeSO 4 À7H 2 O (b) H 2 O 2 and/or HNO 3 (c) H 2 SO 4 and (d) a source of bi-fluoride ion; (d) is preferably K, Na, or NH 4 bi-fluoride, and preferred amounts in wt-per cent are (a) 1-60 (b) 5-25 (c) 5-60 (d) 0.2-5 and water, 10-60, in the concentrate, which may also contain up to 8 wt per cent NH 3 and up to 5% urea. The actual use solution contains 0-99% H 2 O and 100-1% of said concentrate. An accelerator for the above bath contains (1) water (2) NH 3 and (3) a source of NO 2 -, e.g. K, Na, or NH 4 nitrite, preferably in amounts (1) 65-75 wt per cent (2) 0-5% and (3) 25-35%. 1-4% of the accelerator is added to the concentrate. Cleaning is by immersion at 20-50C, for up to 25 minutes; typically Al is cleaned to remove etching smut, oxide films, conversion coatings or anodizing, but the bath may be used to clean Cu or brass.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US19794871A | 1971-11-11 | 1971-11-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1407269A true GB1407269A (en) | 1975-09-24 |
Family
ID=22731393
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB777375A Expired GB1413649A (en) | 1971-11-11 | 1972-11-10 | Accelerating the cleaning of metal surfaces by means of acid cleaning baths |
| GB5198472A Expired GB1407269A (en) | 1971-11-11 | 1972-11-10 | Acid cleaning bath |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB777375A Expired GB1413649A (en) | 1971-11-11 | 1972-11-10 | Accelerating the cleaning of metal surfaces by means of acid cleaning baths |
Country Status (7)
| Country | Link |
|---|---|
| AU (1) | AU466393B2 (en) |
| CA (1) | CA979791A (en) |
| FR (1) | FR2159488B1 (en) |
| GB (2) | GB1413649A (en) |
| IT (1) | IT973497B (en) |
| SE (2) | SE384384B (en) |
| ZA (1) | ZA727984B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5232619A (en) * | 1990-10-19 | 1993-08-03 | Praxair S.T. Technology, Inc. | Stripping solution for stripping compounds of titanium from base metals |
| US7160847B2 (en) * | 2003-04-22 | 2007-01-09 | Chang Gung University | Water solution using in metal surface treating process and process for removing oxidized film and burred edge using the same |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61106783A (en) * | 1984-10-30 | 1986-05-24 | Nippon Paint Co Ltd | Cleaner for surface of aluminum |
| DE19618899A1 (en) * | 1996-05-10 | 1997-11-13 | Metallgesellschaft Ag | Process for removing conversion layers with a soap content from metallic workpieces |
-
1972
- 1972-11-10 FR FR7240007A patent/FR2159488B1/fr not_active Expired
- 1972-11-10 GB GB777375A patent/GB1413649A/en not_active Expired
- 1972-11-10 SE SE7214653A patent/SE384384B/en unknown
- 1972-11-10 IT IT53958/72A patent/IT973497B/en active
- 1972-11-10 ZA ZA727984A patent/ZA727984B/en unknown
- 1972-11-10 GB GB5198472A patent/GB1407269A/en not_active Expired
- 1972-11-10 CA CA156,267A patent/CA979791A/en not_active Expired
- 1972-11-10 AU AU48709/72A patent/AU466393B2/en not_active Expired
-
1975
- 1975-09-24 SE SE7510716A patent/SE413037B/en unknown
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5232619A (en) * | 1990-10-19 | 1993-08-03 | Praxair S.T. Technology, Inc. | Stripping solution for stripping compounds of titanium from base metals |
| US5290362A (en) * | 1990-10-19 | 1994-03-01 | Praxair S.T. Technology, Inc. | Striping process for stripping compounds of titanium from base metals |
| US7160847B2 (en) * | 2003-04-22 | 2007-01-09 | Chang Gung University | Water solution using in metal surface treating process and process for removing oxidized film and burred edge using the same |
Also Published As
| Publication number | Publication date |
|---|---|
| SE384384B (en) | 1976-05-03 |
| IT973497B (en) | 1974-06-10 |
| AU466393B2 (en) | 1975-10-30 |
| GB1413649A (en) | 1975-11-12 |
| FR2159488A1 (en) | 1973-06-22 |
| SE413037B (en) | 1980-03-31 |
| AU4870972A (en) | 1974-05-23 |
| SE7510716L (en) | 1975-09-24 |
| ZA727984B (en) | 1973-08-29 |
| CA979791A (en) | 1975-12-16 |
| FR2159488B1 (en) | 1976-08-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |