PURPOSE:To prevent the development of skin mark to a material to be heated by putting plural ceramic rolling material in recessed part shaped at top face side of a beam body so as to form the flat top plane at the upper side from top edge of the recessed part. CONSTITUTION:The ceramic beam member 20 is covered by refractory layer 30 to form the beam body 10 of the skin in a heating furnace and is arranged on a receiving table 201 in the beam post 200. At the top face side of this beam body 10, the bottom face having trough shape extending to longitudinal direction by block 50 (51, 52) and wear member 60 forms the flat recessed part 40. The ceramic rolling material 70 composing sphere 71 with large diameter and sphere 72 with small diameter, is put in this recessed part 40 and the flat top plane is formed at the upper part side from the recessed part 40 by the sphere 72 with large diameter. By heat-treating the material S to be heated under using the skid having such a construction, the development of skid mark is prevented to the material S to be heated.
展开▼
