Method for producing honeycomb structure

Patent metadata

Field	Value
Publication number	US-11858170-B2
Application number	US-202117452792-A
Country	US
Kind code	B2
Filing date	Oct 29, 2021
Priority date	Mar 8, 2021
Publication date	Jan 2, 2024
Grant date	Jan 2, 2024

Abstract

A method for producing a honeycomb structure 1 having a slit 12 includes: a first step of preparing a honeycomb structure 1 being free from slit, and forming the slit 12 leaving at least a part of the outer peripheral wall 10 or the partition wall 11; after the first step, a second step of filling the slit 12 with a joining material 13; and after the second step, a third step of removing at least a part of the outer peripheral wall 10 or the partition wall 11 left in the first step to obtain the honeycomb structure 1 having the slit 12 that divides the honeycomb structure 1.

First claim

The invention claimed is:

1. A method for producing a ceramic honeycomb structure, the honeycomb structure comprising: an outer peripheral wall; a partition wall arranged on an inner side of the outer peripheral wall, the partition wall defining a plurality of cells each extending from one end face to other end face to form a flow path, the honeycomb structure having a slit that divides the honeycomb structure in a cross section orthogonal to an axial direction of the honeycomb structure,
wherein the method comprises:
a first step of preparing a honeycomb structure being free from slit, and forming the slit leaving at least a part of the outer peripheral wall;
a second step of filling, after the first step, the slit with a joining material; and
a third step of removing, after the second step, at least a part of the outer peripheral wall left in a linear direction of the slit formed in the first step to obtain the honeycomb structure having the slit that divides the honeycomb structure.

2. The method for producing a honeycomb structure according to claim 1 , further comprising, after the third step, a fourth step of filling the joining material in a portion where at least a part of the outer peripheral wall has been removed.

3. The method for producing a honeycomb structure according to claim 1 , wherein the honeycomb structure has a pair of electrode layers provided on an outer surface of the outer peripheral wall.

Assignees

• Ngk Insulators Ltd

Inventors

• Naito Yuto

Classifications

• B28B3/269 Primary

  For multi-channeled structures, e.g. honeycomb structures · CPC title

• B01J35/04

  Operations & Transport · mapped topic

• B28B11/006

  Making hollow articles or partly closed articles · CPC title

• Y02A50/20

  Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters · CPC title

• B28B11/12

  for removing parts of the articles by cutting · CPC title