| 摘要 |
PURPOSE:To improve the durability of a measuring tool by using a ceramic mold as the base material of the measuring tool and finishing a part requiring accuracy by melt spray of a ceramic material. CONSTITUTION:A ceramic mold obtained by calcining a material such as alumina, silica and magnesia or an oxide or non-oxide obtained by combining these materials is used as the base material of the measuring tool such as a stool and a straight edge. In addition, a surface of which accuracy is required is finished by ceramic melt spray by using a material such as alumina, spinel and zirconia or the mixture of these materials as the base material. Said procedure makes it possible to obtain a measuring tool having high accuracy, high abrasion resistance and less secular change. |
