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Finned multi-aperture sheet metal, method of manufacturing the sheet metal, part for exhaust emission control device using the sheet metal, and method of manufacturing the part for exhaust emission control device

a multi-aperture, sheet metal technology, applied in the direction of filtration separation, physical/chemical process catalysts, separation processes, etc., can solve the problems of extreme difficulty in manufacturing and inability to stably carry ou

Inactive Publication Date: 2006-12-07
TOYO KOHAN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention relates to a finned multi-aperture sheet metal and a manufacturing method thereof. The finned multi-aperture sheet metal has a plurality of holes with a fin formed by bending a fin from the sheet metal towards one surface side or bending a fin from the sheet metal towards both surface sides. The manufacturing method involves forming cut lines on the sheet metal and bending tongue portions formed based on the cut lines outwards to form a fin. The fin is opened to form a hole with the fin. The invention also relates to a part of an exhaust emission control device formed by a spaced body formed by spirally winding the finned multi-aperture sheet metal and having a net-like cross section. The technical effects of the invention include improved exhaust emission control, reduced weight and cost of the part, and improved manufacturing efficiency.

Problems solved by technology

However, in a method of manufacturing a thus constituted metal supporter, an operation of winding a flat sheet and a corrugated sheet in a put together state, owing to difference in the bending elasticity of both sheets and a frictional coefficient problem at a contact portion between the flat sheet and the corrugated sheet, cannot be stably carried out; that is, the manufacture is carried out with extreme difficulty.
For instance, there is a problem (winding difference problem at the time of winding) in that when a force for winding the flat sheet and the corrugated sheet works differently at both end portions in an axial direction of a honeycomb body manufactured as an intermediate part, a spirally wound honeycomb body does not form a proper circular columnar form and forms a shape (bamboo-shoot like) in which one end side in an axial direction of the honeycomb body projects bamboo-shoot like at a winding center portion and the other end side thereof recedes mortar-like.

Method used

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  • Finned multi-aperture sheet metal, method of manufacturing the sheet metal, part for exhaust emission control device using the sheet metal, and method of manufacturing the part for exhaust emission control device
  • Finned multi-aperture sheet metal, method of manufacturing the sheet metal, part for exhaust emission control device using the sheet metal, and method of manufacturing the part for exhaust emission control device
  • Finned multi-aperture sheet metal, method of manufacturing the sheet metal, part for exhaust emission control device using the sheet metal, and method of manufacturing the part for exhaust emission control device

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first embodiment

[0027] A first embodiment relating to the finned multi-aperture sheet metal according to the invention is one in which on a sheet metal formed into a long flat band (including a metal foil. The same applies below), holes with a fin projected on one surface side (hereinafter, referred to as “hole with a fin”) are formed. Owing to a length of the fin, a separation can be freely controlled. As metal that is used for the sheet metal, general-purpose stainless steel expressed by iron-nickel-chromium alloys, iron-nickel alloys, iron-chromium-aluminum alloys or iron-chromium alloys can be applied. Here, to form includes, other than a case where for instance, only holes with a fin are arranged with regularity and a case where holes with a fin are formed with some kind or another of regularity in relationship to holes without a fin (hereinafter, referred to as “hole without a fin”), a case where holes are formed at random without any kind of regularity.

[0028] Thus, since a lot of holes such ...

second embodiment

[0032] Still furthermore, a finned multi-aperture sheet metal 1 relates to one in which holes with a fin 3 projected on any of surfaces of a long flat band-like sheet metal 2 are formed in a line.

[0033] As mentioned above, also in the present embodiment, the holes with a fin 3 and the holes without a fin 4, furthermore, in the holes with a fin 3, holes with a fin 3A in which a side articulated to the fin 8 is one side on an upstream side of the hole portion 7 and holes with a fin 3B in which a side articulated to the fin 8 is one side on a downstream side of the hole portion 7, and holes with a fin 3C in which the fin 8 is projected on one surface of the sheet metal 2 and holes with a fin 3D in which the fin 8 is projected on the other surface may be arranged with regularity or at random.

[0034] In FIG. 5, as a finned multi-aperture sheet metal 1 according to the second embodiment, a finned multi-aperture sheet metal 1 is shown in which the hole with a fin 3 and the hole without a f...

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Abstract

A holed sheet metal with multiple holes most suitable for forming a spaced body with a net-like cross section as a part for exhaust emission control device, a method of manufacturing the sheet metal, a part for exhaust emission control device using the sheet metal, and a method of manufacturing the part, wherein a plurality of holes (3) are formed in a long flat-like sheet metal (2) to form the finned sheet metal (1), and die holes (3) in the finned sheet metal (1) are formed by bending fins (8) from the sheet metal (2) in the direction of one surface side of the sheet metal, whereby the sheet metal can be easily provided at a low cost.

Description

[0001] This is a division of parent application Ser. No. 10 / 497,033 filed May 28, 2004.TECHNICAL FIELD [0002] The present invention relates to a finned multi-aperture sheet metal most preferably used in a device that purifies exhaust emission exhausted from an internal-combustion engine such as an engine of an automobile, a method of manufacturing the same, a part for exhaust emission control device such as a supporter and a filter that use the finned multi-aperture sheet metal, and a method of manufacturing the part for exhaust emission control device. BACKGROUND ART [0003] In an exhaust emission control device of an internal combustion engine such as an engine of an automobile and a power generator, a metal supporter in which in a cylindrical casing made of metal steel such as heat-resistant stainless steel sheet, a circular columnar honeycomb body made of the same metal steel is engaged is used. [0004] Thus constituted conventional metal supporter is generally manufactured accord...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): B21D13/00B01D39/20B01D46/00B01D53/86B01J35/04B21D28/36B21D31/02B21D47/00B21D53/04F01N3/28
CPCB01J35/04B21D28/36B21D31/02B21D53/04F01N2330/40F01N3/2821F01N2330/04F01N2330/38F01N3/2817B01J35/56
Inventor SHIMIZU, KEIICHITAYA, SHINICHI
Owner TOYO KOHAN CO LTD