MICROWAVE DRYING METHOD OF HONEYCOMB FORMED BODY

摘要

Provided is a microwave drying method of a honeycomb formed body that controls the temperature rising direction inside of the honeycomb formed body during microwave drying, whereby no defective shapes, such as deformation of cells of the honeycomb formed body, occur. A microwave drying method 1 includes: an introduction step of disposing a honeycomb formed body 10 while keeping an axis direction X of cells 11 of the honeycomb formed body vertically and introducing the honeycomb formed body 10 into a drying furnace capable of irradiating with microwaves; a reflector placing step of placing a microwave reflector 20 having a function to reflect the microwaves above and/or below around the honeycomb formed body 10; and a microwave drying step of irradiating with the microwaves while controlling temperature of an inside of the honeycomb formed body 10 by the microwave reflector 20 so that any one of the end faces (e.g., end face 13) of the honeycomb formed body 10 reaches 100°C to dry the honeycomb formed body 10 after the other part of the honeycomb formed body 10 reaches 100°C.