BRAZING FURNACE AND BRAZING METHOD OF ALUMINUM MATERIAL

摘要

PROBLEM TO BE SOLVED: To provide a brazing furnace and a brazing method of aluminum material capable of brazing the aluminum material without using even flux and without requiring an expensive facility such as for vacuum brazing.SOLUTION: A brazing furnace of aluminum material is continuously arranged with a preheating chamber 11 for raising temperature to an aluminum material preheating temperature and having brazing material adhered to a joining part, a brazing chamber 12 for joining the mutual aluminum materials by raising temperature to the preheating temperature before raising temperature to the joining temperature to melt the brazing material and a cooling chamber 13 for cooling the aluminum material after the brazing, and is provided with argon supply means 15 for supplying argon for filling the brazing chamber with an argon atmosphere and nitrogen supply means 16 and 17 for supplying nitrogen for filling the preheating chamber and the cooling chamber with a nitrogen atmosphere, respectively.