Metal fiber yarn, fabric comprising metal fiber yarn, method for manufacturing fabric, and use of fabric

Abstract

Disclosed is a metal fiber yarn, which is used to produce a membrane for a surface combustion burner having a wide combustion range and high porosity, a fabric produced using the metal fiber yarn, a method for manufacturing the fabric, and the membrane for the surface combustion burner using the fabric. Having a length of 0.45-0.6 m/g and a torsion ratio of 1-9 turns/m, the metal fiber yarn comprises 50-100 unidirectionally oriented metal fibers, which are produced by combing randomly oriented metal fibers manufactured by a melt extraction method. The membrane has uniform combustion efficiency, a wide combustion range, and high porosity.

1 . A metal fiber yarn comprising 50-100 unidirectionally oriented metal fibers, wherein said unidirectionally oriented metal fibers are prepared by combing randomly oriented metal fibers manufactured by a melt extraction method, and said metal fiber yarn having a length of 0.45-0.6 m/g and a torsion ratio of 1-9 turns/m.  
   
   
       2 . The metal fiber yarn as set forth in  claim 1 , wherein each of the metal fibers has a crescent section, a length of 10-20 cm and a protrusion that protrudes by a height of 1-5 μm from a surface thereof.  
   
   
       3 . The metal fiber yarn as set forth in  claim 1 , wherein the metal fibers are made of an iron-chromium-aluminum-based alloy containing 0.05-0.5 wt % zirconium.  
   
   
       4 . The metal fiber yarn as set forth in  claim 3 , wherein the metal fibers are made of an iron-chromium-aluminum-based alloy containing 0.1-0.3 wt % zirconium.  
   
   
       5 . The metal fiber yarn as set forth in  claim 3 , wherein the metal fibers are made of an iron-chromium-aluminum-based alloy containing 70-83 wt % iron, 18-27 wt % chromium, 3-7 wt % aluminum, and 0.05-0.5 wt % zirconium.  
   
   
       6 . The metal fiber yarn as set forth in  claim 1 , wherein a cylindrical rod having a diameter of 12 mm is provided at an induction coil of a melting unit and melted at an end thereof, and a molten portion of the cylindrical rod comes into contact with a disk, which rotates at a high speed of 1-100 m/sec, to instantaneously produce the metal fibers having a crescent section in the melt extraction method.  
   
   
       7 . The metal fiber yarn as set forth in  claim 1 , wherein the metal fiber yarn further comprises polymer or natural fibers, which are disposed in nearly parallel arrangement in the yarn.  
   
   
       8 . A fabric comprising the metal fiber yarn according to  claim 1 .  
   
   
       9 . The fabric as set forth in  claim 8 , wherein the fabric has a density of 1.0-4.0 kg/m 2 .  
   
   
       10 . The fabric as set forth in  claim 8 , wherein the fabric is a woven fabric or a knitted fabric.  
   
   
       11 . The fabric as set forth in  claim 8 , wherein the fabric has porosity of 75-95%.  
   
   
       12 . The fabric as set forth in  claim 8 , wherein flame holes are formed in a slit shape, a ratio of length to width of which is 10:1 or less, on lower and upper sides of the fabric.  
   
   
       13 . A method for manufacturing a fabric, comprising: 
 combing randomly oriented metal fibers, which are produced through a melt extraction method, to prepare unidirectionally oriented metal fibers;    producing a metal fiber yarn, which consists of 50-100 unidirectionally oriented metal fibers and which has a length of 0.45-0.6 m/g and a torsion ratio of 1-9 turns/m, by means of a twisting operation; and    producing the fabric using the metal fiber yarn.    
   
   
       14 . The method as set forth in  claim 13 , wherein each of the metal fibers has a crescent section, a length of 10-20 cm and a protrusion that protrudes by a height of 1-5 μm from a surface thereof.  
   
   
       15 . The method as set forth in  claim 13 , wherein the metal fibers are made of an iron-chromium-aluminum-based alloy containing 0.05-0.5 wt % zirconium.  
   
   
       16 . The method as set forth in  claim 13 , wherein a cylindrical rod having a diameter of 12 mm is provided at an induction coil as a melting unit and melted at an end thereof, and a molten portion of the cylindrical rod comes into contact with a disk, which rotates at a high speed of 1-100 m/sec, to instantaneously produce the metal fibers having a crescent section in the melt extraction method.  
   
   
       17 . The method as set forth in  claim 13 , wherein the metal fiber yarn further comprises polymer or natural fibers, which are disposed in nearly parallel arrangement in the yarn.  
   
   
       18 . The method as set forth in  claim 13 , wherein the fabric is a woven fabric or a knitted fabric.  
   
   
       19 . A membrane for a surface combustion burner using the fabric according to  claim 8 .  
   
   
       20 . The membrane as set forth in  claim 19 , wherein the fabric has a density of 1.0-4.0 kg/m 2 .  
   
   
       21 . The membrane as set forth in  claim 19 , wherein the fabric is a woven fabric or a knitted fabric.  
   
   
       22 . The membrane as set forth in  claim 19 , wherein the fabric has porosity of 75-95 %.  
   
   
       23 . The membrane as set forth in  claim 19 , wherein flame holes of the fabric are formed in a slit shape, a ratio of length to width of which is 10:1 or less, on lower and upper sides of the fabric.