GB712238A - Improvements in methods of gas shielded arc welding of aluminium and aluminium alloys - Google Patents
Improvements in methods of gas shielded arc welding of aluminium and aluminium alloysInfo
- Publication number
- GB712238A GB712238A GB8048/51A GB804851A GB712238A GB 712238 A GB712238 A GB 712238A GB 8048/51 A GB8048/51 A GB 8048/51A GB 804851 A GB804851 A GB 804851A GB 712238 A GB712238 A GB 712238A
- Authority
- GB
- United Kingdom
- Prior art keywords
- aluminium
- nitric
- oxide film
- wire
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/16—Arc welding or cutting making use of shielding gas
- B23K9/173—Arc welding or cutting making use of shielding gas and of a consumable electrode
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Nonmetallic Welding Materials (AREA)
- Arc Welding In General (AREA)
Abstract
A bare aluminium or aluminium alloy wire substantially free of any hydrogen containing compound is employed as an electrode when aluminium or aluminium alloy is welded by the gas shielded arc welding process. All moisture, hydrocarbons such as oil and grease and hydrated oxide film are removed from the wire before welding. An alkaline bath containing sodium carbonate, trisodium phosphate and sodium hydroxide may be used to remove oil, grease and hydrated acid film. The wire is then immersed in an acid, e.g. nitric, nitric-hydrofluoric or chromic based to brighten it, and it is rinsed and dried. An alkaline bath, e.g. 3 per cent. sodium carbonate and 3 per cent. sodium phosphate with an inhibitor, e.g. pyridine or aniline or a vapour degreaser, e.g. trichlorethylene, perchlorethylene carbon tetrachloride or benzol may be used to remove oil and grease and an acid bath, e.g. of nitric, phosphoric and acetic to remove the oxide film. The acid bath may be replaced by a solution of caustic soda, zinc oxide and water in which the oxide film is dissolved to expose the aluminium which on dissolving is replaced by zinc. The zinc is removed in a nitric acid bath. Stainless steel brushes may be used to mechanically remove the oxide film. After removing oxide, moisture and hydrocarbons the wire may be packaged in a moisture-proof container. Specifications 687,666, [Group XXII], and 712,271 are referred to. Reference has been directed by the Comptroller to Specification 659,015, [Group XXII].
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US712238XA | 1950-04-29 | 1950-04-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB712238A true GB712238A (en) | 1954-07-21 |
Family
ID=22100022
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB8048/51A Expired GB712238A (en) | 1950-04-29 | 1951-04-06 | Improvements in methods of gas shielded arc welding of aluminium and aluminium alloys |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB712238A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2189261A (en) * | 1986-04-11 | 1987-10-21 | Pyrene Chemical Services Ltd | Processes and compositions for abrasive blast cleaning |
-
1951
- 1951-04-06 GB GB8048/51A patent/GB712238A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2189261A (en) * | 1986-04-11 | 1987-10-21 | Pyrene Chemical Services Ltd | Processes and compositions for abrasive blast cleaning |
GB2189261B (en) * | 1986-04-11 | 1990-08-01 | Pyrene Chemical Services Ltd | Processes and compositions for abrasive blast cleaning |
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