GB958401A - Improvements in or relating to a method and an apparatus for electrolytic machining - Google Patents
Improvements in or relating to a method and an apparatus for electrolytic machiningInfo
- Publication number
- GB958401A GB958401A GB3054160A GB3054160A GB958401A GB 958401 A GB958401 A GB 958401A GB 3054160 A GB3054160 A GB 3054160A GB 3054160 A GB3054160 A GB 3054160A GB 958401 A GB958401 A GB 958401A
- Authority
- GB
- United Kingdom
- Prior art keywords
- electrolyte
- workpiece
- tank
- alkali metal
- metal salt
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H3/00—Electrochemical machining, i.e. removing metal by passing current between an electrode and a workpiece in the presence of an electrolyte
- B23H3/08—Working media
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
Abstract
An aqueous electrolyte for electro-machining metals contains an alkali metal salt of orthophosphoric or boric acid, and also dissolving anions, e.g. an alkali metal salt of a strong mineral acid, applied as a film to a gap less than 1 mm between the workpiece as <PICT:0958401/C3/1> anode and the cathode. The boric and/or phosphoric acid acts as buffer suppressing OH ion formation. In examples (1) sodium nitrite, borax, and mono sodium phosphate, (2) sodium nitrate and chloride, and disodium phosphate as dilute solutions are used. Other strong mineral acid salts include sulphate, chromate, and the oxy-chlorine acids. The electrolyte is pumped from a tank 13 through a nozzle 15, in the gap of less than 1 mm. between rotating disc cathode 10 and workpiece 6 mounted on a support 4 clamped to a table which may be moved forward by handle 5. The used electrolyte collects in a groove 16 leading to the tank 13.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH7785859A CH381045A (en) | 1959-09-04 | 1959-09-04 | Liquid intended for the machining of metallic materials by electrolytic means |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB958401A true GB958401A (en) | 1964-05-21 |
Family
ID=4536013
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3054160A Expired GB958401A (en) | 1959-09-04 | 1960-09-05 | Improvements in or relating to a method and an apparatus for electrolytic machining |
Country Status (3)
| Country | Link |
|---|---|
| CH (1) | CH381045A (en) |
| GB (1) | GB958401A (en) |
| NL (1) | NL255569A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4997534A (en) * | 1989-02-13 | 1991-03-05 | General Electric Company | Electrochemical machining with avoidance of erosion |
-
0
- NL NL255569D patent/NL255569A/xx unknown
-
1959
- 1959-09-04 CH CH7785859A patent/CH381045A/en unknown
-
1960
- 1960-09-05 GB GB3054160A patent/GB958401A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CH381045A (en) | 1964-08-14 |
| NL255569A (en) |
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