| 摘要 |
PROBLEM TO BE SOLVED: To obtain necessary strength for subsequent aging treatment and to reduce temp. difference between the upper and lower face plates so as to reduce thermal strain by clamping a honeycomb core of Ai-Mg-Si base alloy and face plates with upper and lower dies, heating them, brazing them, and then, cooling them at a specific cooling velocity. SOLUTION: A honeycomb structural body composed by assembling upper and lower face plates 14, a honeycomb core 15 and a frame material 16 if necessary is clamped and fixed with upper and lower dies 11, 12 through metal 13 on the upper and lower sides, it is heated in a vacuum or an inert gas in this state, and joined with brazing, succeedingly an air is fed from the upper and lower directions with a fan, and it is cooled rapidly from the temperature of more than 500 deg.C just after brazing to 100 deg.C with the cooling velocity of >=20≡C, <=40 deg.C per minute. Because the upper and lower dies 11, 12 are composed by assembling metal plates in a grid like, the cooling air is well circulated when it is cooled with a fan, because the weight is decreased, the heat capacity is made small, and the cooling of the honeycomb panel is promoted. |
