| abstract |
The invention concerns the conversion of light alloys. n By lubricating the die with a vitreous substance based on alkaline phosphate and alkaline tetraborate, alloys based on aluminium or magnesium can be hot-drawn at speeds of at least 100 meters per minute and up to 300 meters per minute. n The invention can be applied to drawing aluminium alloys, particularly those of series 2,000, 5,000 and 7,000. |