GB1147989A - Electropolishing of ferrous alloys - Google Patents
Electropolishing of ferrous alloysInfo
- Publication number
- GB1147989A GB1147989A GB3278865A GB3278865A GB1147989A GB 1147989 A GB1147989 A GB 1147989A GB 3278865 A GB3278865 A GB 3278865A GB 3278865 A GB3278865 A GB 3278865A GB 1147989 A GB1147989 A GB 1147989A
- Authority
- GB
- United Kingdom
- Prior art keywords
- weight
- additive
- stainless steel
- electrolyte
- electrolyte solution
- 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
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25F—PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROM OBJECTS; APPARATUS THEREFOR
- C25F3/00—Electrolytic etching or polishing
- C25F3/16—Polishing
- C25F3/22—Polishing of heavy metals
- C25F3/24—Polishing of heavy metals of iron or steel
Abstract
1,147,989. Electro-polishing stainless steel alloys. ELECTROPOL Ltd. July 29, 1966 [July 30, 1965; Sept.10, 1965], Nos. 32788/65 and 38759/65. Heading C7B. An electrolyte solution for use in the electropolishing of stainless steel alloys consists of (a) more than 50% by weight of either phosphoric acid, or a mixture of phosphoric and sulphuric acids in a maximum weight ratio of sulphuric to phosphoric acid of 4:1, (b) from 5 to 35% by weight of water and (c) an additive which comprises (i) a saturated aliphatic monocarboxylic acid which is formic acid or which contains at least 4 carbon atoms and/or (ii) an ester having a total of from 2 to 12 carbon atoms and being an ester of a saturated aliphatic monocarboxylic acid and a monohydric alcohol, the additive being present in a concentration sufficient to enhance the polish obtainable in such electrolyte. The stainless steel alloys contain at least 15% of alloyed constituents including Cr and optionally Ni. The alloys may be austenitic. Specified additives for the electrolyte are HCOOH, the n- and iso-acids with a total of 4 or 5 C atoms, vinyl acetate, n-propyl formate, butyl formate, ethyl acetate, and butyl acetate. The additive may form 0À3% by weight or more of the electrolyte solution. The electrolyte solution may also contain wetting agents (no specific agent being mentioned) and other previously employed additives, e.g. polyethylene glycol of molecular weight 600. It may contain an anti-foaming agent such as tributyl phosphate. The electro-polishing may be carried out at 50 to 100‹C. using a current density between 50 and 700 amps. /sq.ft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3278865A GB1147989A (en) | 1965-07-30 | 1965-07-30 | Electropolishing of ferrous alloys |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3278865A GB1147989A (en) | 1965-07-30 | 1965-07-30 | Electropolishing of ferrous alloys |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1147989A true GB1147989A (en) | 1969-04-10 |
Family
ID=10344004
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3278865A Expired GB1147989A (en) | 1965-07-30 | 1965-07-30 | Electropolishing of ferrous alloys |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1147989A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103603027A (en) * | 2013-11-07 | 2014-02-26 | 昆明理工大学 | Electrochemical polishing method of palladium and alloy thereof |
| EP3878579A1 (en) * | 2020-03-09 | 2021-09-15 | Acondicionamiento Tarrasense | Procedure for finishing stainless steel parts |
-
1965
- 1965-07-30 GB GB3278865A patent/GB1147989A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103603027A (en) * | 2013-11-07 | 2014-02-26 | 昆明理工大学 | Electrochemical polishing method of palladium and alloy thereof |
| CN103603027B (en) * | 2013-11-07 | 2017-01-04 | 昆明理工大学 | A kind of palladium and the electrochemical polishing method of alloy thereof |
| EP3878579A1 (en) * | 2020-03-09 | 2021-09-15 | Acondicionamiento Tarrasense | Procedure for finishing stainless steel parts |
| WO2021180480A1 (en) * | 2020-03-09 | 2021-09-16 | Acondicionamiento Tarrasense | Procedure for finishing stainless steel parts |
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