发明名称 |
METHOD FOR MANUFACTURING MICROPORE FILTER |
摘要 |
Provided is a method for manufacturing a micropore filter usable as SCE. Stainless steel particles having particle diameters of 3 to 60 μm are subjected to milling in a bead mill using zirconia beads to prepare powder having a flakiness of 0.03 to 0.4. The zirconia adhered to the surface of the powder is removed by pickling. A load of 10 to 15 kN is applied to 0.5 to 1.0 g of the pickled powder, thereby compacting the powder into a columnar compact body. The compact body is kept and fired in a vacuum atmosphere of 10−5 to 10−3 Pa at a temperature of 1000 to 1300° C. for 1 to 3 hours to form a sintered body. The sintered body is pressed into a pipe having an inner diameter of 0.90 to 0.99 times of the outer diameter of the sintered body, and extruded to obtain a micropore filter. |
申请公布号 |
US2017028474(A1) |
申请公布日期 |
2017.02.02 |
申请号 |
US201415100066 |
申请日期 |
2014.11.26 |
申请人 |
PURERON JAPAN CO., LTD. |
发明人 |
Nakajima Hidetoshi;Miura Toshio;Katano Miyabi;Igarashi Nozomi |
分类号 |
B22F3/11;B01D67/00;B01D71/02;B22F1/00;B22F3/20;B22F9/04;C23G1/08;B01D61/14;B22F3/16 |
主分类号 |
B22F3/11 |
代理机构 |
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代理人 |
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主权项 |
1. A method for manufacturing a micropore filter comprising:
a step of treating stainless steel particles having particle diameters in a range of 3 to 60 μm in a bead mill using zirconia beads to prepare powder having a flakiness expressed by a ratio of a thickness with respect to a long diameter (thickness/long diameter) in a range of 0.03 to 0.4; a step of pickling the powder to remove zirconia adhered to a surface of the powder due to treatment in the bead mill; a step of applying a load of 10 to 15 kN to 0.5 to 1.0 g of the powder after the pickling, thus compacting the powder to obtain a compact body having a columnar shape; a step of keeping the compact body in a vacuum atmosphere in a range of 10−5 to 10−3 Pa at a temperature in a range of 1000 to 1300° C. for 1 to 3 hours, thus firing the compact body to obtain a sintered body; and a step of pressing the sintered body into a pipe having an inner diameter in a range of 0.90 to 0.99 times of an outer diameter of the sintered body, and extruding the sintered body. |
地址 |
Iwaki-shi, Fukushima JP |