Manufacturing method of honeycomb structure

Patent metadata

Field	Value
Publication number	US-10265881-B2
Application number	US-201715434390-A
Country	US
Kind code	B2
Filing date	Feb 16, 2017
Priority date	Mar 24, 2016
Publication date	Apr 23, 2019
Grant date	Apr 23, 2019

Abstract

The manufacturing method of the honeycomb structure includes a mounting step of mounting an extruded honeycomb formed body on a firing setter disposed on a shelf plate, and a firing step of firing the honeycomb formed body mounted on the firing setter to form the honeycomb structure, and in the mounting step, the firing setter is used in which a value obtained by dividing an area of a formed body end face of the honeycomb formed body by an area of a honeycomb mounting surface of the firing setter which faces the formed body end face and at least a part of which comes in contact with the formed body end face is in a range of 2.5 to 20.0.

First claim

What is claimed is:

1. A manufacturing method of a honeycomb structure comprising:
a mounting step of mounting an extruded honeycomb formed body on a firing setter disposed on a shelf plate; and
a firing step of firing the honeycomb formed body mounted on the firing setter to form the honeycomb structure,
wherein in the mounting step, the firing setter is used in which a value obtained by dividing an entire area of a formed body end face of the honeycomb formed body by an entire area of a honeycomb mounting surface of the firing setter which faces the formed body end face and at least a part of which comes in contact with the formed body end face is in a range of 2.5 to 20.0.

2. The manufacturing method of the honeycomb structure according to claim 1 ,
wherein the honeycomb structure formed by the firing step comprises a dented portion which is dented in a concave state by the contact with the firing setter, and
a height from a structure end face of the honeycomb structure to the deepest portion of the dented portion is 3.0 mm or less.

3. The manufacturing method of the honeycomb structure according to claim 2 ,
further comprising an end face grinding step of grinding the structure end face of the honeycomb structure.

4. The manufacturing method of the honeycomb structure according to claim 1 ,
wherein as the firing setter, a pressed setter made of ceramics is used.

5. The manufacturing method of the honeycomb structure according to claim 1 ,
wherein the honeycomb mounting surface of the firing setter has a curved surface portion formed of a convex curved surface, and
a height from an outer edge portion of the curved surface portion to a topmost portion thereof is in a range of 0.2 mm to 0.9 mm.

6. The manufacturing method of the honeycomb structure according to claim 1 ,
wherein the firing setter possesses a round sectional shape.

7. The manufacturing method of the honeycomb structure according to claim 1 ,
wherein a surface roughness of the honeycomb mounting surface is 10 μm or less.

Assignees

• Ngk Insulators Ltd

Inventors

• Kitaguchi Daniel Yukichi
• Fukui Toshihiro

Classifications

• B28B11/243 Primary

  Setting, e.g. drying, dehydrating or firing ceramic articles (B28B11/242 takes precedence) · CPC title

• B28B3/02

  wherein a ram exerts pressure on the material in a moulding space; Ram heads of special form · CPC title

• B01J35/04

  Operations & Transport · mapped topic

• B28B3/20

  wherein the material is extruded {(extrusion moulding of plastics B29C48/00)} · CPC title

• B01J37/08

  Heat treatment {(B01J37/0009, B01J37/0018 take precedence)} · CPC title