Centrifugal casting device and centrifugal casting method

Abstract

A centrifugal casting device casts a cast product by pouring molten metal into a mold while rotating the mold, and includes: a control unit for controlling the rotational speed of the mold; and a determination unit for determining whether or not the head position of the molten metal flowing in the direction of a rotation axis of the mold has reached a predetermined position. The control unit rotates the mold at a first rotational speed, and rotates the mold at a second rotational speed in a case where the determination unit determines that the head position has reached the predetermined position.

1 . A centrifugal casting device that casts a cast product by pouring molten metal into a mold while rotating the mold, the centrifugal casting device comprising:
 one or more processors that execute computer-executable instructions stored in a memory,   wherein the one or more processors execute the computer-executable instructions to cause the centrifugal casting device to:   control a rotational speed of the mold to rotate the mold at a first rotational speed;   determine whether or not a head position of the molten metal flowing in a direction of a rotation axis of the mold has reached a predetermined position; and   rotate the mold at a second rotational speed in a case where it is determined that the head position has reached the predetermined position.   
     
     
         2 . The centrifugal casting device according to  claim 1 , wherein
 the second rotational speed is higher than the first rotational speed.   
     
     
         3 . The centrifugal casting device according to  claim 1 , wherein
 the first rotational speed is set in accordance with a pouring speed that is a flow velocity of the molten metal at which the molten metal is poured into the mold.   
     
     
         4 . The centrifugal casting device according to  claim 1 , wherein
 a plurality of recesses are formed in an inner circumferential surface of the mold.   
     
     
         5 . A centrifugal casting method for casting a cast product by pouring molten metal into a mold while rotating the mold, the centrifugal casting method comprising:
 starting pouring of the molten metal into the mold in a state where the mold is rotated at a first rotational speed;   determining whether or not a head position of the molten metal flowing in a direction of a rotation axis of the mold has reached a predetermined position; and   rotating the mold at a second rotational speed in a case where it is determined that the head position has reached the predetermined position.   
     
     
         6 . The centrifugal casting method according to  claim 5 , wherein
 the second rotational speed is higher than the first rotational speed.   
     
     
         7 . The centrifugal casting method according to  claim 5 , wherein
 the first rotational speed is set in accordance with a pouring speed that is a flow velocity of the molten metal at which the molten metal is poured into the mold.   
     
     
         8 . The centrifugal casting method according to  claim 5 , wherein
 a plurality of recesses are formed in an inner circumferential surface of the mold.