Abstract: There is disclosed a method of manufacturing a ceramic honeycomb structure, which is capable of controlling a length of slurry pressed into each cell of the honeycomb structure when predetermined cells are plugged at an end surface of the honeycomb structure. A film 4 is attached to an end surface of the honeycomb structure 1. Holes 3a, 3b through the film 4 are made at a position corresponding to openings of predetermined cells 2a, 2b. The end surface is immersed into slurry 6 stored in a container 5 and the end surface is pressed so that the slurry 6 is pressed into the openings of the predetermined cells 2a, 2b. When the holes are made, two or more types of holes 3a, 3b having different diameters are made.

Abstract: There is disclosed a method of manufacturing a ceramic honeycomb structure, which is capable of controlling a length of slurry pressed into each cell of the honeycomb structure when predetermined cells are plugged at an end surface of the honeycomb structure. A film 4 is attached to an end surface of the honeycomb structure 1. Holes 3a, 3b through the film 4 are made at a position corresponding to openings of predetermined cells 2a, 2b. The end surface is immersed into slurry 6 stored in a container 5 and the end surface is pressed so that the slurry 6 is pressed into the openings of the predetermined cells 2a, 2b. When the holes are made, two or more types of holes 3a, 3b having different diameters are made.

Abstract: The present invention is to provide a method and an apparatus for mounting components having a feature of detecting with high accuracy component pick up failure by the nozzle at component pick up stage, and/or component carrying back by the nozzle at component mounting stage. Achieved vacuum pressure is initialized to zero after completion of component pick up by the nozzle 25, and vacuum pressure decrease of the nozzle 25 is detected from the initialized zero point. If the detected value is bigger than the predetermined threshold, it may be judged that at least one of the nozzles failed to pick up a component. The failed nozzle may be identified by using a component recognition device 37. Blowing air blow volume flowing through the nozzle 25 is measured upon completion of component mounting. If the blowing air flow is smaller that the predetermined threshold, it is judged that the nozzle 25 carries back a component 30.