| 摘要 |
PURPOSE:To produce easily a composite bearing material deposited with a copper-lead alloy layer having structural density on the back metal in a short period by spraying copper-lead alloy powder on the back metal and sintering the powder, heating the sintered layer obtd. by sintering to melt then cooling said layer. CONSTITUTION:About -250 mesh copper-lead alloy powder 2 consisting essentially of copper, contg. about 5-20% lead and contg. Sb, Zn, Sn, etc. if necessary from a tank 12 is sprayed to a strip 1 as the back metal which is un-coiled from an un-coiler 10 and is run while the strip is taken up on a coiler 11. After said powder is applied over the entire surface of the strip 1, the strip is passed through a sintering furnace 3. The above-mentioned powder 2 is sintered at about 700-900 deg.C in the reducing atmosphere in said furnace. The strip 1 on which the sintered layer is deposited is passed through a high-frequency heating furnace 5 and is subjected to a melting treatment for a short period at about 1,000 deg.C. The strip 1 is then passed through a cooling furnace 6 and water or the like is injected from nozzles 13 to the strip from the rear thereof to cool quickly the strip down to a room temp., by which the lead-copper alloy layer 9 is formed and the copper-lead bearing material is obtd. |
