Part for removing impurities from a molten metal

Abstract

The present invention arranges the part for removing impurities from a molten metal containing a filter holder constituted of a structure containing an organic fiber, an inorganic fiber and thermosetting resin and a heat-resistant filter in the runner of the mold.

1 . A part for removing impurities from a molten metal, comprising a filter holder constituted of a structure comprising an organic fiber, an inorganic fibers and a thermosetting resin and a heat-resistant filter. 
   
   
       2 . The part for removing impurities from a molten metal according to  claim 1 , wherein the heat-resistant filter is made of ceramics. 
   
   
       3 . The part for removing impurities from a molten metal according to  claim 1  or  2 , wherein an effective cross-sectional area of the heat-resistant filter is not less than 25 cm 2 . 
   
   
       4 . The part for removing impurities from a molten metal according to  claim 1 , which is for an evaporative pattern casting method. 
   
   
       5 . The part for removing impurities from a molten metal according to  claim 1 , wherein the inorganic fiber is carbon fiber. 
   
   
       6 . The part for removing impurities from a molten metal according to  claim 1 , wherein the contents of the organic fiber, the inorganic fiber and the thermosetting resin are 1 to 50 parts by weight, 1 to 40 parts by weight and 2 to 50 parts by weight, respectively, to the total of 100 parts by weight of these three components. 
   
   
       7 . The part for removing impurities from a molten metal according to  claim 1 , wherein the structure further comprises inorganic particles. 
   
   
       8 . The part for removing impurities from a molten metal according to  claim 1 , wherein the filter holder has a molten metal inlet part and a molten metal outlet part, which are capable to be fitted with and connected to a molten metal supplying channel. 
   
   
       9 . A mold for producing a cast article, comprising the part for removing impurities from a molten metal according to  claim 1 . 
   
   
       10 . The mold for producing a cast article according to  claim 9 , wherein the part for removing impurities from a molten metal is arranged in a runner. 
   
   
       11 . A method for producing a cast article, using the mold for producing a cast article according to  claim 9 . 
   
   
       12 . A filter holder for producing a cast article constituted of a structure comprising an organic fiber, an inorganic fibers and a thermosetting resin.