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Honeycomb structure and method for manufacturing the same

A honeycomb-shaped, structured technology, applied in separation methods, chemical instruments and methods, catalyst carriers, etc., can solve problems such as damage and damage to partition walls, and achieve the effect of effective manufacturing

Active Publication Date: 2009-01-14
NGK INSULATORS LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Therefore, when the honeycomb structure fixed to the metal container is heated by high-temperature exhaust gas or the like, there are sometimes damages such as debris
In particular, a honeycomb structural body having a peripheral coating portion on its peripheral surface (see, for example, Patent Documents 1 and 2) has a problem of damage at the peripheral coating portion or the partition walls at the peripheral portions at both ends.

Method used

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  • Honeycomb structure and method for manufacturing the same
  • Honeycomb structure and method for manufacturing the same
  • Honeycomb structure and method for manufacturing the same

Examples

Experimental program
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Effect test

Embodiment 1

[0073] A cordierite molding material was used as a molding material, and kneaded with a kneader to prepare clay. Use a quadrilateral chamber of 12mil / 300cpsi (0.3048mm / 46.5 (chamber / cm 2 )) cell structure, cell spacing of 1.47mm and a mold with an outer diameter of several millimeters larger than 354mm, the clay is extruded into a honeycomb shape. Next, both end faces of the formed honeycomb body were alternately plugged, dried, and fired to obtain a formed honeycomb body.

[0074] Then, the peripheral edge portion of the formed honeycomb body was ground to obtain a ground formed honeycomb body having an outermost peripheral diameter of 354 mm. Next, use the Figure 8 The shown cam 15 with a concave portion and the coating blade 18 form a peripheral coating portion to obtain a honeycomb structure with a diameter of 356 mm, wherein the end face of the peripheral coating portion is positioned at the center of the honeycomb structure portion in the axial direction. inner side ...

Embodiment 2

[0076] The honeycomb shaped body of grinding has quadrilateral cell and is 17mil / 100cpsi (0.4318mm / 15.5 (room / cm 2 )) cell structure, cell spacing of 2.54mm and outermost diameter of 404mm. Then, if Figure 11 As shown, the coating material was applied to the outer periphery to obtain an outer periphery coated honeycomb formed body 81 having a diameter of 406 mm x 432 mmL (axial length). Next, if Figure 12 As shown, the outer peripheral portion of each end face in the axial direction of the peripherally coated honeycomb formed body 81 is ground into a tapered shape using a grindstone to obtain a honeycomb structure, wherein both end faces are formed as Figure 5 Conical shapes shown in (a) and 5(b). Conical section (see Figure 6 ) width W is 5mm, the tapered part (see Figure 6 ) has a depth H of 0.4 mm.

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Abstract

There is provided a honeycomb structure capable of inhibiting damages such as chipping in an end portion from being caused upon a treatment of exhaust gas or the like while being fixed in a metal container. The honeycomb structure 100 includes: a honeycomb structured portion 1 having porous partition walls separating and forming a plurality of cells functioning as fluid passages and extending in an axial direction, and an outer peripheral coat portion 2 disposed on the outer periphery 1 b of the honeycomb structured portion 1. An end face 2 a of the outer peripheral coat portion 2 is located on the inside, in the axial direction, of an end face 1 a of the honeycomb structured portion 1 in at least one end portion 3 in the axial direction.

Description

technical field [0001] The present invention relates to a honeycomb structure and a method for producing said honeycomb structure. More preferably, the present invention relates to a honeycomb structure and a method for producing the honeycomb structure capable of suppressing damage caused by processing exhaust gas or the like when fixed in a metal container, such End chips. Background technique [0002] The ceramic honeycomb structure is used to trap particulate matter such as soot contained in automobile exhaust gas or combustion exhaust gas produced by burning waste, etc.; and further to adsorb and absorb the above exhaust gas by a catalyst supported on the honeycomb structure NO in x , CO, HC, etc. Such a ceramic honeycomb structure is generally fixed (encapsulated) in a cylindrical metal container (converter container) in which high-temperature exhaust gas and the like are discharged. [0003] Therefore, when the honeycomb structure fixed to the metal container is h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J35/04B01D39/00B01D39/20B01D46/00B01D53/86
CPCY10T428/24149B01D46/2462F01N3/2828Y10T428/24157B01D46/2466B01D46/2455B01D46/2451F01N2450/02F01N3/2853F01N2350/02F01N2260/12B01J35/04B01J35/57B01J35/56
Inventor 市川结辉人
Owner NGK INSULATORS LTD
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