FIELD: metallurgy; machine building. SUBSTANCE: method of polishing aluminium and its alloys involves treatment of metal surface in special solution which takes place at 95-110 C within 1-5 min. The process is carried out in two steps at interval 0.5-1 min. Special solution comprises, g/l: polyphosphoric acid (having density 1.95 kg/dm3), 670-720; sulfuric acid (having density 1.8 kg/dm3), 210-330; nitric acid (having density 1.4 kg/dm3), 88-220; pentahydrous copper sulfate, 3.6-7.3 and orthophosphoric acid (having density 1.57 kg/dm3), 660-680. EFFECT: improved purity of treated surface.
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF CHEMICAL POLISHING OF ALUMINUM | 1996 |
|
RU2104329C1 |
| PASSIVATING SOLUTION FOR TREATING VESSELS AND EQUIPMENT THAT CONTACTS WITH HYDROGEN PEROXIDE | 1993 |
|
RU2102531C1 |
| COMPOUND FOR PRODUCTION OF DIELECTRIC COATING | 1995 |
|
RU2098514C1 |
| METHOD FOR PRODUCTION OF ANTICORROSION PIGMENT ON BASE OF ALUMINIUM TRIPHOSPHATE | 1995 |
|
RU2102420C1 |
| METHOD FOR ISOLATION OF COPPER SULFATE | 1994 |
|
RU2065402C1 |
| FOOD ADDITION FOR POULTRY | 1993 |
|
RU2034503C1 |
| METHOD FOR PURIFICATION OF ACID SEWAGE AGAINST SULFATE IONS | 1992 |
|
RU2071451C1 |
| SOLUTION FOR PHOSPHATING THE METALLIC SURFACE | 1995 |
|
RU2090650C1 |
| ELECTROLYTE FOR PRODUCTION OF COPPER STRIP BY ELECTROLYSIS | 1995 |
|
RU2113546C1 |
| SOLUTION FOR SIMULTANEOUS DEGREASING AND PHOSPHATING | 1995 |
|
RU2090651C1 |
