Manufacturing method of honeycomb structure

Patent metadata

Field	Value
Publication number	US-9371254-B2
Application number	US-201514618178-A
Country	US
Kind code	B2
Filing date	Feb 10, 2015
Priority date	Mar 25, 2014
Publication date	Jun 21, 2016
Grant date	Jun 21, 2016

Abstract

The manufacturing method of the honeycomb structure has a forming step of forming a forming raw material into a plurality of quadrangular prismatic honeycomb formed bodies each having partition walls, a firing step of firing the plurality of honeycomb formed bodies to form a plurality of quadrangular prismatic honeycomb fired bodies, a sheet-like bonding material attaching step of attaching sheet-like bonding materials to at least part of side surfaces of at least part of the plurality of honeycomb fired bodies, a honeycomb block body preparing step of preparing a honeycomb block body in which the plurality of honeycomb fired bodies are stacked, by assembling the plurality of quadrangular prismatic honeycomb fired bodies while bonding the side surfaces thereof to one another by the bonding materials, and a grinding step of grinding a circumferential portion of the honeycomb block body to obtain the honeycomb structure.

First claim

What is claimed is:

1. A manufacturing method of a honeycomb structure comprising:
a forming step of forming a forming raw material into a plurality of quadrangular prismatic honeycomb formed bodies each having partition walls defining a plurality of cells which become through channels for a fluid and extend from one end face to another end face;
a firing step of firing the plurality of honeycomb formed bodies to form a plurality of quadrangular prismatic honeycomb fired bodies;
a sheet-like bonding material forming step of forming the sheet-like bonding material independent of all of the plurality of honeycomb fired bodies;
a sheet-like bonding material attaching step of attaching sheet-like bonding materials to at least part of side surfaces of at least part of the plurality of honeycomb fired bodies;
a honeycomb block body preparing step of preparing a honeycomb block body in which the plurality of honeycomb fired bodies are stacked, by assembling the plurality of quadrangular prismatic honeycomb fired bodies while bonding the entire side surfaces thereof to one another by the bonding materials; and
a grinding step of grinding a circumferential portion of the honeycomb block body to obtain the honeycomb structure,
wherein the bond in material contains 0.08 to 0.40 mass % agar, and
wherein a shearing strength of the obtained honeycomb structure is 200 kPa or more.

2. The manufacturing method of the honeycomb structure according to claim 1 , wherein the bonding material contains 20 to 45 mass % of water.

3. The manufacturing method of the honeycomb structure according to claim 1 , wherein the bonding material contains 20 to 40 mass % of a ceramic raw material.

4. The manufacturing method of the honeycomb structure according to claim 1 , wherein a thickness of the bonding material is from 0.5 to 6.0 mm.

5. The manufacturing method of the honeycomb structure according to claim 1 , wherein a compressive strength of the bonding material is from 5 to 55 N.

6. The manufacturing method of the honeycomb structure according to claim 1 , wherein the sheet-like bonding material is beforehand shaped in the form of a sheet by using casting or extrusion.

Assignees

• Ngk Insulators Ltd

Inventors

• Ishii Yutaka
• Akita Kazunari
• Sato Yoshihiro
• Nate Masayuki

Classifications

• C04B2235/658

  Atmosphere during thermal treatment · CPC title

• B01D46/0001

  Making filtering elements · CPC title

• C04B2235/5436

  micrometer sized, i.e. from 1 to 100 micron · CPC title

• C04B2235/6567

  Treatment time · CPC title

• C04B38/0006

  Honeycomb structures (from one or more corrugated sheets by winding or stacking C04B38/0083) · CPC title