Joining metal wire filaments to nonwoven structures for producing honey-comb bodies

A joining method and technology of fiber webs, applied in separation methods, manufacturing tools, metal processing, etc., can solve the problems of fiber web cracking, shape fiber connection obstruction, wear, etc., and achieve the effect of high dynamic load and thermal load

Active Publication Date: 2008-05-07
EMITEC EMISSIONSTECHNIK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the required shape is hindered by the connections formed between the fibers, so that considerable difficulties arise in the manufacture of such exhaust gas treatment systems in series production.
Therefore, additional processing tools with a special configuration are required, which are also subject to high wear due to the poor formability of the smooth fiber web.
In addition, there is the risk that the fiber web will split uncontrollably at different locations, in which case the fibers may later be detached in the exhaust system

Method used

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  • Joining metal wire filaments to nonwoven structures for producing honey-comb bodies
  • Joining metal wire filaments to nonwoven structures for producing honey-comb bodies
  • Joining metal wire filaments to nonwoven structures for producing honey-comb bodies

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Embodiment Construction

[0046] FIG. 1 schematically and perspectively shows a fiber web 1 which is composed of a plurality of metal wires 2. The fiber web 1 has a first material joint connection 4 that collectively forms a connection surface 6. In the embodiment shown, a part of the first material joining connection 4 is made as a parallel line, in particular a weld seam, wherein this connection surface 6 intersects the "sawtooth" configuration of the other first material joining connection 4. In the case where the second material joint connection has not yet been produced, the fiber web 1 has anisotropic fiber web properties. The anisotropy is specifically designed to be different in the direction of the web thickness 17 (direction Z) or in the plane (direction X and direction Y). It is very particularly preferable to form anisotropy in the X and Y directions, so that the fiber web 1 can be bent in the direction X, and bend resistant in the direction Y, for example. The weld seam shown may have a width ...

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Abstract

The invention relates to a method for producing a nonwoven structure (1) comprising metal wire filaments (2) by carrying out the following steps: a) producing a layer (3) comprising wire filaments (2); establishing first integral joints (4) between at least a part of the metal wire filaments (2) using a first joining method; c) establishing second integral joints (5) between metal wire filaments (2) using a second joining method. The invention also relates to corresponding nonwoven structures and to possible uses thereof, for example in the exhaust gas treatment of motor vehicles.

Description

Technical field [0001] The present invention relates to a method for manufacturing a fiber web (Vlies) containing metal wires, a method for manufacturing a honeycomb body containing at least one fiber web, a fiber web with many metal wires, and a Honeycomb formed by fiber mesh. Background technique [0002] The metal fiber mesh is used, for example, as a filter material for exhaust gas of stationary and mobile internal combustion engines. They are used in particular to block particles (ash, carbon black, etc.) contained in the exhaust gas, wherein these particles are at least partially blocked by the fiber mesh and are chemically converted using a catalytic converter. Especially in the exhaust system of mobile internal combustion engines such as vehicles, ships, etc., due to the high thermal load and dynamic load acting on the fiber web, special requirements are placed on the durability of this fiber web, especially the fiber There is a lasting connection with each other. [0003...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K31/02B23K1/00D04H1/42D04H1/4234D04H1/54D04H3/02
CPCD04H3/02D04H1/54B01D2258/012D04H1/4234B23K11/0093B01D53/944B23K1/0014B01D39/2044F01N3/2013Y02T10/26D04H1/42B23K2201/02B01D2258/014B23K2101/02Y10T428/12479Y10T428/12153Y10T428/12Y10T428/1234Y10T442/188Y02A50/20Y02T10/12B23K31/02B23K1/00
Inventor R·布吕科P·希尔特
Owner EMITEC EMISSIONSTECHNIK
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