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.

Abstract: Disclosed herein is a metal fiber sintered body for combustion used for combustion media of gas burners. The sintered body comprises a plurality of circular though-holes, each having a diameter of 0.5˜2 mm, formed in a regular pattern therein. The sintered body has a metal fiber density in the range of 0.5˜4 kg/m2, and a total area of the through-holes is less than 5% of a total surface area of the metal fiber sintered body. The metal fibers may comprise Fe—Cr—Al-based alloys, and further comprise trace elements. When the sintered body is applied to the combustion media, the fuel gas is prevented from being concentrated on the center of the through holes and leaked therethrough, while the length of combustion flames is reduced, thereby enabling complete combustion as well as allowing the combustion chamber to be manufactured at a reduced scale.