تصميم و بناء افران المنطقة المنصهرة لتنقية المواد

This research has been included design, construction and manufacture thermal furnaces of electrical resistance heaters for two specimens (A1,A2) of (110 * 110*40 mm) dimensions , and the thermal resister of the wires that used for melting materials of thermal degrees (550 ,700°C ) was (3.2 ,2.7mm), (1.7, ,3.2mm) for the two specimens (A1)and( A2 ) respectively, which used in system melting(Z-M) for materials purification process . We observed during the work that the properties efficiency of purification furnaces of Al and A2 at melting point (550C 700 °C) the length of the melting ( 4.2mm, 7mm) and sharp thermal gradation of (5.7°C/mm), 7.2 °C / mm), respectively . We found from the diagram of thermal distribution of the Al the length of the zone melting at temperature (555 °C) equal to (4.3mm), and the length of the zone melting at a temperature (548°C) equal to (7mm), and thermal gradation (5.7 °C / mm), and for the Al specimen the zone melting at temperature (680 °C) equal to (7mm), and the length of the (Z-M) at a temperature (651 °C) equal to (12mm), and thermal gradation was (7.2 °C/mm).