JPS6448667A - Production of honeycomb structure - Google Patents

Abstract

PURPOSE:To reinforce the adhesive strength with a plate without any defect at the joining part which is compact and thin in the thickness, and to eliminate the need for tacking by executing the thermal spray of the powder of a brazing filler metal at high speed and high heat by a plasma thermal spraying device and executing brazing by forming the coating layer thereof. CONSTITUTION:The powder of a brazing filler metal A is subjected to thermal spraying to plate-like or currugated sheet-like plate 2 or 3 by the thermal spraying gun 4 of a plasma thermal spraying device 1 to form the coating layer of the brazing filler metal A at the specified part. Since the coating layer is formed by the high speed and high heat thermal spray, the need for tacking is eliminated, no org. solvent is contaminated, the thickness can be thinned and the adhesive strength with the plate 2 or 3 becomes stronger. Then after abutting the plate 2 or 3 to other plate 2 or 3, both are partially joined by heating at brazing stage. The honeycomb structure 15 like a corrugated tube thus manufactured is remarkably improved in its quality and performance aspects of the uniformity, strength, stability, etc., of the cell.