| 摘要 |
PURPOSE:To execute thermal analysis with good accuracy at a high speed by designating the section where the inclination of temp. is below a prescribed range as a stagnating section and setting preliminarily the existence range of a primary crystal temp. and eutectic temp. CONSTITUTION:A temp. measuring instrument 10 measures the temp. in the cooling process of a molten metal and the output thereof its analyzed in a data analyzing device 20 from which the analyzed result is outputted to an output device 30. The device 20 consists of a discriminating part 21 for the primary crystal temp. range, a discriminating part 22 for the eutectic temp. range, a detecting part 23 for the stagnating section, a detecting part 24 for the primary crystal temp. and a detecting part 25 for the eutectic temp. Whether the temp. data is within the preset primary crystal temp. range and the eutectic temp. range or not is discriminated by the parts 21, 22 and the stagnating sec tion is detected in the part 23 according to the result of such discrimination. The primary crystal temp. and eutectic temp. are further detected by the respec tive detecting parts 24, 25 in said stagnating section. |
