Supporting method of honeycomb formed body

摘要

There is disclosed a method capable of effectively suppressing deformation when a honeycomb formed body formed by horizontal extrusion is supported by a cradle, and supporting even a large honeycomb formed body so that cell wall buckling hardly occur and a high shape accuracy is kept, wherein the lowermost end of a supporting surface of the cradle is located below the lowermost end of the honeycomb formed body immediately after extruded through the die during the horizontal movement, and a distance in a vertical direction between the lowermost end of the honeycomb formed body immediately after extruded through the die and the lowermost end of the supporting surface of the cradle is from 5 to 15 mm during the horizontal movement when a honeycomb formed body extruded through a die in a horizontal direction by extrusion is supported by a cradle.

主权项

1. A method of making a honeycomb formed body comprising: extruding a kneaded material obtained by kneading a forming raw material through a die to form a honeycomb formed body having partition walls defining a plurality of cells extending in an extruding direction, and supporting the honeycomb formed body extruded through the die by a cradle having a supporting surface at a downstream portion of the die in the extruding direction,
wherein a horizontal continuous forming machine is used in the extrusion of the honeycomb formed body such that the extruding direction is horizontal, the cradle moves horizontally in the extruding direction after lifting from a position below the die at a position downstream of the die, a lowermost end of the supporting surface of the cradle is located below the lowermost end of the honeycomb formed body immediately after extruded through the die during a horizontal movement, and a distance in a vertical direction between the lowermost end of the honeycomb formed body immediately after extruded through the die and the lowermost end of the supporting surface of the cradle is from 5 to 15 mm during the horizontal movement, wherein a support for the honeycomb formed body is not interposed between the die and the cradle, wherein the honeycomb formed body has a columnar shape and an outer diameter of from 150 to 450 mm, and wherein a ratio of the outer diameter of the honeycomb formed body to a length of the honeycomb formed body is 0.86 or more and 3.75 or less.