| 摘要 |
PROBLEM TO BE SOLVED: To prevent the formation of deteriorated layer even having remarkable wear resistance on the surface in each producing process in a complex casting body of cemented carbide and the other metal. SOLUTION: Parallel lines 10 regularly arranging formed bodies 1 composed of the bulky cemented carbides embedded in the inner part in each base metal 2 from the wearing surface by a specific depth and coating the end surfaces 11 in the direction crossed at the right angle to the wearing surfaces, are formed so as to embed over the whole range of wearing surfaces, and integrally welded. Further, at the time of casting, the formed bodies 1 of the cemented carbide are arranged so that the end surfaces 11 thereof are apart from the distance S=3+α(mm) peculia to each base metal in the direction crossed at the right angle to the mold surface 31 as the depth and formed by connecting the many formed bodies 1 in the same direction and fixing in the mold 3 and inserted as cast-in, and theαadopts a specific value depending on the composition of the base metal and the peculia heat treatment.
|
