Metal fiber comprising more than one metal or metal alloy

Inactive Publication Date: 2007-02-08
NV BEKAERT SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Benefits of technology

[0011] The present invention has an object to provide a method to provide metal fibers comprising at least two metals or metal alloys in their cross section. The invention further has as an object to provide a method to provide metal fibers comprising at least two metals or metal alloys in their cross section, which fibers have a smaller equivalent diameter as known in the art. The invention further has as an object to provide a method for providing metal fibers which is cheap in production and which reduces the cost of maki

Problems solved by technology

Usually the metal fiber media itself is coated with another additional metal or metal alloy, which may result in an uneven distribution of the additional metal or metal alloy throughout the metal fiber medium.
The use of two or more types of metal fibers, to provide combinations of metal alloys in a metal fiber media, has a disadvantage tha

Method used

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  • Metal fiber comprising more than one metal or metal alloy
  • Metal fiber comprising more than one metal or metal alloy

Examples

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Embodiment Construction

[0047] A cross section of a metal fiber 100 as subject of the invention is shown in FIG. 1. The metal fiber cross section 100, which is substantially polygon, in this case quadrangular, even substantially rectangular. comprises a first zone 101 and a second zone 102. The first zone 101 is provided using a first metal M1, as an example a stainless steel alloy comprising aluminum, chromium and iron. This first zone 101 provides the sections 111, 112 and 113 of the perimeter of the metal fibers cross section. the second zone 102 provides the sections 121, 122 and 123 of the perimeter of the metal fibers cross section. As an example the metal used to provide the second zone is Pd.

[0048] As an example the metal fiber 100 of FIG. 1 has an equivalent diameter R. This means that the surface π*R2 / 4 is equal to the multiplication of the fiber first side length 133 with the sum of the layer thickness 131 and 132 of the first zone 101, respectively second zone 132. As an example, the metal fib...

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Abstract

A metal fiber has a cross section, having a perimeter. The cross section comprises at least a first zone and a second zone, each of these zones providing a part of the perimeter. The first zone is composed of a first metal or metal alloy M1, and the second zone is composed of a second metal or metal alloy M2, for which M1 is different from M2. A method to make such fiber is provided. the method as subject of the invention comprises the steps of to—Providing a foil or plate which is composed of metal or metal alloy M1;—Applying at a first side of said foil or plate a layer of a second metal or metal alloy M2;—Coiling up said foil or plate comprising M1 and M2 on a shaft;—Rotating said shaft with coiled foil or plate and cutting the end surface of said coiled foil or plate using a cutting tool.

Description

FIELD OF THE INVENTION [0001] The present invention relates to a metal fiber comprising several metals or metal alloys and to a method of manufacturing such a fiber. BACKGROUND OF THE INVENTION [0002] Metal fibers are already well known in the art. The best known example is given by metal fibers obtained by bundle drawing methods. [0003] Bundle drawn metal fibers may comprise different metal alloys, as explained in JP 5-177243. [0004] Metal fibers obtained by coil shaving methods are known from U.S. Pat. No. 4,930,199. [0005] Such metal fibers may be used to provide a metal fiber media for several different applications, such as filtration of liquids or gasses, burner membranes or catalytic carriers. [0006] Frequently the metal fiber media are to be combined with an other metal or metal alloy, in order to provide specific properties to the metal fiber medium, such as catalytic properties. Usually the metal fiber media itself is coated with another additional metal or metal alloy, wh...

Claims

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Application Information

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IPC IPC(8): D02G3/00B21C37/02B21C37/04B21F45/00B22F1/062B23P17/06
CPCB21C37/042B22F2998/00Y10T428/2933B23P17/06C22C47/04B21C37/02B22F2009/046B32B15/01B22F1/062B21C37/00B21C37/04B21F45/00
Inventor MARRECAU, WILLY
Owner NV BEKAERT SA
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