| 摘要 |
PROBLEM TO BE SOLVED: To enable a fine wire to be used as mat material for a surface combustion burner, a filter material for a high temperature and an anti-vibration material for a high temperature or the like by a method wherein iron, chromium and silicon are contained in composing elements of the metallic fine wire having a wire diameter less than its specified size. SOLUTION: A copper disk 1 having an acute edge at its circumferential edge is rotated at a low speed of a predetermined rotational speed. Then, a rod-like raw material metal M made of an alloy of iron-chromium-silicon supported at a cylindrical holder 2 is pushed up gradually by a pushing-up member 4 toward the copper disk 1 and its extremity end is heated and melted by a high frequency heating coil 3. Then, the extremity end of the molten raw material metal M is contacted with the circumferential edge forming an acute edge of the rotating disk 1 so as to form a metallic fine wire ML with a diameter of about 20 to 100μm, for example. In addition, an amount of inclusion of chromium acting as composing element of the metallic fine wire ML is set to have a range except 16wt.% to 24wt.% and further a rare-earth metal more than 0.05wt.% is added to it. With such an arrangement as above, stability and durability of the mat for surface combustion burner are improved.
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