IT1316027B1 - Continuous electrolytic method in neutral solution for pickling and descaling carbon steels and stainless steels involves selecting anodic treatment times and cell currents according to specific formula - Google Patents
Continuous electrolytic method in neutral solution for pickling and descaling carbon steels and stainless steels involves selecting anodic treatment times and cell currents according to specific formulaInfo
- Publication number
- IT1316027B1 IT1316027B1 ITRM20000674A IT1316027B1 IT 1316027 B1 IT1316027 B1 IT 1316027B1 IT RM20000674 A ITRM20000674 A IT RM20000674A IT 1316027 B1 IT1316027 B1 IT 1316027B1
- Authority
- IT
- Italy
- Prior art keywords
- current
- anodic treatment
- anodic
- steels
- electrolytic method
- Prior art date
Links
- 229910000975 Carbon steel Inorganic materials 0.000 title abstract 3
- 238000000034 method Methods 0.000 title abstract 3
- 230000007935 neutral effect Effects 0.000 title abstract 3
- 229910001220 stainless steel Inorganic materials 0.000 title abstract 3
- 238000005554 pickling Methods 0.000 title abstract 2
- 238000006243 chemical reaction Methods 0.000 abstract 3
- 239000000243 solution Substances 0.000 abstract 3
- 229910000831 Steel Inorganic materials 0.000 abstract 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract 1
- 230000000694 effects Effects 0.000 abstract 1
- 238000005868 electrolysis reaction Methods 0.000 abstract 1
- 239000008151 electrolyte solution Substances 0.000 abstract 1
- 229910052760 oxygen Inorganic materials 0.000 abstract 1
- 239000001301 oxygen Substances 0.000 abstract 1
- 230000020477 pH reduction Effects 0.000 abstract 1
- 239000010959 steel Substances 0.000 abstract 1
Landscapes
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
A continuous electrolytic method in a neutral solution comprises selecting anodic treatment times and cell currents such that the product of current density crossing the cell and anodic treatment time is the sum of a constant fraction of electric charge density outputted for the direct oxide changing anodic reactions and the product of a time constant and the current density. A continuous electrolytic method in a neutral solution for pickling and descaling of carbon steels and stainless steels involves the presence of electrolysis current flow indirect effects. The current is direct current (DC) or alternating current (AC) having a frequency lower than 3 Hz. The anodic treatment times and the cell currents are selected according to formula It = c + kI where I is the current density crossing the cell; t is the anodic treatment time; c is the constant fraction of electric charge density outputted for the direct oxide changing anodic reactions; and k is a time constant for the calculation of the fraction of electric charge density, proportional to the current density, outputted for the indirect anodic reactions linked to oxygen development and to the consequent acidification at the steel/electrolytic solution interface for the carbon steels and at the scale/solution interface for the stainless steels.
Priority Applications (9)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT2000RM000674 IT1316027B1 (en) | 2000-12-18 | 2000-12-18 | Continuous electrolytic method in neutral solution for pickling and descaling carbon steels and stainless steels involves selecting anodic treatment times and cell currents according to specific formula |
| AU2002217449A AU2002217449A1 (en) | 2000-12-18 | 2001-12-18 | Continuous electrolytic pickling and descaling of carbon steel and stainless |
| AT01271468T ATE276386T1 (en) | 2000-12-18 | 2001-12-18 | CONTINUOUS ELECTROLYTIC PICKLING AND DESCALING OF UNALLOYED STEEL AND STAINLESS STEEL |
| CNB018220649A CN1231615C (en) | 2000-12-18 | 2001-12-18 | Continuous electrolytic pickling and descaling of carbon steel and stainless steel |
| ES01271468T ES2232564T3 (en) | 2000-12-18 | 2001-12-18 | DECAPADO AND UNINCUSTED ELECTROLYTIC CONTINUOUS STEEL CARBON AND STAINLESS STEEL |
| DE60105653T DE60105653T2 (en) | 2000-12-18 | 2001-12-18 | CONTINUOUS ELECTROLYTIC FURNING AND DECOMPOSITION OF UNLOCKED STEEL AND NON-STAINLESS STEEL |
| KR10-2003-7008160A KR20030076589A (en) | 2000-12-18 | 2001-12-18 | Continuous electrolytic pickling and descaling of carbon steel and stainless steel |
| EP01271468A EP1358367B1 (en) | 2000-12-18 | 2001-12-18 | Continuous electrolytic pickling and descaling of carbon steel and stainless steel |
| PCT/IT2001/000637 WO2002050344A1 (en) | 2000-12-18 | 2001-12-18 | Continuous electrolytic pickling and descaling of carbon steel and stainless |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT2000RM000674 IT1316027B1 (en) | 2000-12-18 | 2000-12-18 | Continuous electrolytic method in neutral solution for pickling and descaling carbon steels and stainless steels involves selecting anodic treatment times and cell currents according to specific formula |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| ITRM20000674A0 ITRM20000674A0 (en) | 2000-12-18 |
| ITRM20000674A1 ITRM20000674A1 (en) | 2002-06-18 |
| IT1316027B1 true IT1316027B1 (en) | 2003-03-26 |
Family
ID=11455062
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IT2000RM000674 IT1316027B1 (en) | 2000-12-18 | 2000-12-18 | Continuous electrolytic method in neutral solution for pickling and descaling carbon steels and stainless steels involves selecting anodic treatment times and cell currents according to specific formula |
Country Status (1)
| Country | Link |
|---|---|
| IT (1) | IT1316027B1 (en) |
-
2000
- 2000-12-18 IT IT2000RM000674 patent/IT1316027B1/en active
Also Published As
| Publication number | Publication date |
|---|---|
| ITRM20000674A1 (en) | 2002-06-18 |
| ITRM20000674A0 (en) | 2000-12-18 |
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