| 摘要 |
PURPOSE:To prevent the shift in a through-hole direction or the rotation centering around the through-hole direction by using a honeycomb structure wherein at least a part of the surface of an outer wall has a molten surface and the roughness of said molten surface is larger than that of other part. CONSTITUTION:As a ceramic structure used in the carrier of a catalyst for purifying or deodorizing combustion gas, a honeycomb structure 1 is extruded to be dried and, thereafter, a low melting compound is adhered to said structure at a predetermined position and baked to provide a molten surface 2, whose surface roughness is larger than that of other part, to at least a part of the outer wall surface thereof. When this honeycomb structure is incorporated as a converter along with a seal material such as a ceramic mat 5, the seal material bites into the molten surface to increase the holding force of the honeycomb structure. As a result, the shift of through-hole direction of the honeycomb structure or the rotation centering around the through-hole direction thereof can be prevented. |
