PROCESS FOR PRODUCING HONEYCOMB STRUCTURE

摘要

A process for producing a honeycomb structure, comprising milling a molding raw material containing a main component material of ceramics together with a molding auxiliary agent, an additive and a pore forming material, molding the thus prepared ceramic body, drying the same to thereby obtain a molding of honeycomb configuration (honeycomb molding) and sequentially subjecting the honeycomb molding to preliminary firing and principal firing to thereby obtain a honeycomb fired body. In the tensile load measurement of the ceramic body or molding, on an obtained graph showing the relationship between tensile load and extent of displacement, the slope (?) of straight line through yield point (c) and inflection point (b) is below 100% of the slope (d) of straight line through the inflection point (b) and starting point (a) indicating elastic deformation. This process realizes suppression of defect occurrence at honeycomb molding operation, enhancement of yield, suppression of new defect occurrence at the actual use of honeycomb structure and production of honeycomb structure excelling in durability.