| 摘要 |
PURPOSE:To continuously enable a high quality brazing by providing a flux forming device by adjoining to a flux coating chamber, forming a water suspension by crushing and mixing AlF3 powder, K3AlF6 powder and water and coating on an Al member by adjusting them in specified density. CONSTITUTION:A water suspension is formed by mixing and crushing AlF3 powder 30-46wt.% and K3AlF6 powder 70-54wt.% under the existance of water in a flux forming device 21 and this water suspension is adjusted at the rate of 95-90% water to 5-10% mixed powder in the tank 10 of a flux coating chamber 1. It is coated on the Al part to which a brazing filler metal is fixed from a spray 12 by driving a flux coating pump 11 and a good brazing is obtd. by passing it through the series of stages of a drying chamber 2, temp. rise chamber 3, brazing chamber 4 and cooling chamber 5 to the right part on a mesh belt 6. The brazing chamber 4 is held in the specified atmosphere by feeding an N2 gas from a gas feeding port 7. Consequently the brazing of an Al alloy can continuously achieved with a simple process in a high quality at a low cost. |
