| 摘要 |
A method of making titanium-containing copper alloys consists in placing metallic titanium or a pre-cast copper-titanium mixture at the bottom of a vessel in which the alloy is to be melted, covering it with a flux, charging in copper base metal ingot, covering the charge with a mixture of charcoal and borax, heating to produce a melt having a small amount of pxygen and deoxidizing with a small amount of phosphorus. The flux used may consist of 10 per cent copper oxide, 5 per cent potassium nitrate, 65 per cent borax and 20 per cent ground charcoal or 5 per cent potassium nitrate, 65 per cent borax and 30 per cent ground charcoal. Other alloying elements may be included with the copper base metal ingot such as silicon, tin, zinc, lead or aluminium, e.g. 0.15-0.25 per cent of silicon. The amount of titanium used may be 0.1-1.25 per cent of the product. |
