MANUFACTURING METHOD OF SINTERED POROUS ALUMINUM PLATES USING INERT ATMOSPHERE SINTERING BOX

摘要

PURPOSE: A method is provided which greatly reduces manufacturing cost and increases production speed of sintered porous aluminum plates by using an inexpensive continuous heating furnace and an inert atmosphere sintering box. CONSTITUTION: The manufacturing method of sintered porous aluminum plates comprises the steps of maintaining a continuous furnace having length of 500 to 1000 cm, width of 70 to 140 cm and height of 70 to 140 cm and enabling transfer of an inert atmosphere sintering box(1) to the temperature range of 700 to 900 deg.C; injecting an inert gas into the box and sealing the box after putting 20 to 80 graphite molds filled with mixed powder(6) into a box manufactured of an oxidation resistant and heat resistant steel material and having width of 65 to 130 cm, width of 65 to 130 cm and height of 65 to 130 cm and letting the air out of the box; rapidly cooling the sintered box by taking out the sintered box from the continuous furnace and spraying air or water onto the sintered box taken out from the continuous furnace after continuously putting the inert atmosphere sintering box into the continuous furnace so that the inert atmosphere sintering box is sintered for 30 to 80 minutes, wherein the continuous furnace preferably has length of 500 to 1000 cm, width of 70 to 140 cm and height of 70 to 140 cm to continuously mass produce the sintered porous aluminum plates having size of 60 cmx 60 cmx3 mm, 60 cmx120 cmx3 mm or 120 cmx120 cmx3 mm, and moving speed of the inert atmosphere sintering box is maintained to 15 to 33 cm/min while temperature of the continuous furnace is maintained to 700 to 900 deg.C to completely sinter a liquid phased material and reduce time for reaching the sintering temperature.