| 摘要 |
PURPOSE:To prevent brazing material from overflowing the side of a lead pin formed of oxide film by a method wherein the oxide film is formed on surface of long wire rod to be cut off and the cut off surface is fusion cladded with brazing material. CONSTITUTION:An oxide film 6 is formed on the surface of a wire rod 5 by means of heating it as a long wire rod 5 in the oxide atmosphere. Next said wire rod 5 is cut off at specified length to produce a lead pin 5'. The cut off surface 5a not yet oxidized may be easily fusion cladded with brazing material 2 later in case said cut off surface 5a is fusion cladded with the brazing material 2. Besides, the lead pin 5' formed of oxide film 6 on both sides may prevent the brazing material from overflowing the side thereof enabling the cut off surface 5a only to be cladded with the brazing material 2. |
