GB1423064A - - Google Patents
Info
- Publication number
- GB1423064A GB1423064A GB2972173A GB2972173A GB1423064A GB 1423064 A GB1423064 A GB 1423064A GB 2972173 A GB2972173 A GB 2972173A GB 2972173 A GB2972173 A GB 2972173A GB 1423064 A GB1423064 A GB 1423064A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pickling
- hno
- june
- per cent
- acid
- 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
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 abstract 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 abstract 3
- 238000005554 pickling Methods 0.000 abstract 3
- 239000002253 acid Substances 0.000 abstract 2
- RGHNJXZEOKUKBD-SQOUGZDYSA-M D-gluconate Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C([O-])=O RGHNJXZEOKUKBD-SQOUGZDYSA-M 0.000 abstract 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 abstract 1
- 229910000831 Steel Inorganic materials 0.000 abstract 1
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 abstract 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 abstract 1
- 239000000654 additive Substances 0.000 abstract 1
- 230000000996 additive effect Effects 0.000 abstract 1
- 239000003513 alkali Substances 0.000 abstract 1
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 239000004202 carbamide Substances 0.000 abstract 1
- 239000003518 caustics Substances 0.000 abstract 1
- 238000004140 cleaning Methods 0.000 abstract 1
- 239000003599 detergent Substances 0.000 abstract 1
- 238000009713 electroplating Methods 0.000 abstract 1
- 229940050410 gluconate Drugs 0.000 abstract 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 abstract 1
- 239000010959 steel Substances 0.000 abstract 1
- 239000000080 wetting agent Substances 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/34—Pretreatment of metallic surfaces to be electroplated
- C25D5/36—Pretreatment of metallic surfaces to be electroplated of iron or steel
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25F—PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROM OBJECTS; APPARATUS THEREFOR
- C25F1/00—Electrolytic cleaning, degreasing, pickling or descaling
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
1423064 Electrolytic pickling HENKEL & CIE GmbH 22 June 1973 [26 June 1972] 29721/73 Heading C7B Steel sheet, prior to electro-plating is, after an optional preliminary cleaning, electrolytically cleaned in a 1-10 wt per cent solution at pH >13.5 of a cleansing agent which contains free caustic alkali and from 2-40 wt per cent of an alkanolamine having at least 3 free OH groups, at a temperature of 50-90‹C and a current density of 3-15A/dm<SP>2</SP>, followed by acid pickling in HCl, H 2 SO 4 and/or HNO 3 . Solutions of NaOH and triethanolamine are specified which may contain e.g. Na 3 PO 4 , Na silicate, Na gluconate and a polyalkylenether wetting agent. The pickling bath is preferably 5-10% H 2 SO 4 optionally containing 1-5% HNO 3 together with an additive e.g. urea or amidosulphonic acid, to inhibit nitrogen oxide formation. Alternating current may be used.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19722231159 DE2231159A1 (en) | 1972-06-26 | 1972-06-26 | PROCESS FOR PRE-TREATMENT OF STEEL STRIP SURFACES BEFORE APPLYING GALVANIC COATINGS |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1423064A true GB1423064A (en) | 1976-01-28 |
Family
ID=5848789
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2972173A Expired GB1423064A (en) | 1972-06-26 | 1973-06-22 |
Country Status (7)
| Country | Link |
|---|---|
| BE (1) | BE801382A (en) |
| DE (1) | DE2231159A1 (en) |
| ES (1) | ES416267A1 (en) |
| FR (1) | FR2190945B1 (en) |
| GB (1) | GB1423064A (en) |
| IT (1) | IT989386B (en) |
| NL (1) | NL7307484A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2381836A1 (en) * | 1977-02-24 | 1978-09-22 | Norsk Hydro As | PROCESS FOR PREPARING ACTIVE CATHODES FOR ELECTROCHEMICAL PROCESSES, IN PARTICULAR FOR THE ELECTROCHEMICAL PRODUCTION OF HYDROGEN |
| RU2155245C1 (en) * | 1999-08-19 | 2000-08-27 | Степченко Валерий Владимирович | Method for finishing treatment of metallic surface before electroplating (versions) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19853692A1 (en) * | 1998-11-20 | 2000-05-25 | Continental Teves Ag & Co Ohg | Zinc-nickel layer application onto a ferrous metal workpiece, especially an alloy cast iron brake saddle, involves workpiece pretreatment adapted to a workpiece parameter, especially surface quality |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2915444A (en) * | 1955-12-09 | 1959-12-01 | Enthone | Process for cleaning and plating ferrous metals |
| DE1546134C3 (en) * | 1964-12-16 | 1975-08-21 | Dr. Hesse & Cie, 4811 Heepen | Cyanide-free cleaning bath for electrolytic degreasing, rust removal and descaling of iron and iron alloys |
-
1972
- 1972-06-26 DE DE19722231159 patent/DE2231159A1/en not_active Withdrawn
-
1973
- 1973-05-29 NL NL7307484A patent/NL7307484A/xx not_active Application Discontinuation
- 1973-06-22 IT IT2572073A patent/IT989386B/en active
- 1973-06-22 GB GB2972173A patent/GB1423064A/en not_active Expired
- 1973-06-25 BE BE132668A patent/BE801382A/en unknown
- 1973-06-25 ES ES416267A patent/ES416267A1/en not_active Expired
- 1973-06-26 FR FR7323196A patent/FR2190945B1/fr not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2381836A1 (en) * | 1977-02-24 | 1978-09-22 | Norsk Hydro As | PROCESS FOR PREPARING ACTIVE CATHODES FOR ELECTROCHEMICAL PROCESSES, IN PARTICULAR FOR THE ELECTROCHEMICAL PRODUCTION OF HYDROGEN |
| RU2155245C1 (en) * | 1999-08-19 | 2000-08-27 | Степченко Валерий Владимирович | Method for finishing treatment of metallic surface before electroplating (versions) |
Also Published As
| Publication number | Publication date |
|---|---|
| NL7307484A (en) | 1973-12-28 |
| IT989386B (en) | 1975-05-20 |
| DE2231159A1 (en) | 1974-01-17 |
| FR2190945A1 (en) | 1974-02-01 |
| ES416267A1 (en) | 1976-02-16 |
| BE801382A (en) | 1973-12-26 |
| FR2190945B1 (en) | 1976-04-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PLE | Entries relating assignments, transmissions, licences in the register of patents | ||
| PCNP | Patent ceased through non-payment of renewal fee |