Abstract: A mold includes a first groove part and a second groove part. The first groove part extends with a constant length or a constant width from a center part to an outer circumferential part of the mold. The second groove part extends from a terminal end of the first groove part on an outer circumferential part side of the first groove part and merging with any portion of the first groove part.

Abstract: A mold includes a first groove part and a second groove part. The first groove part extends with a constant length or a constant width from a center part to an outer circumferential part of the mold. The second groove part extends from a terminal end of the first groove part on an outer circumferential part side of the first groove part and merging with any portion of the first groove part.

Abstract: A molded article includes a flat plate portion and a projected portion. A molding method includes filling a cavity with the semimolten or semisolid metal in plate thickness directions of the flat plate portion starting from a surface on an opposite side of the flat plate portion from the surface from which the projected portion projects. The cavity is a casting space of the molded article formed inside a forming mold. A molding apparatus for casting the molded article includes a forming mold having the cavity, and a separate insert or slide mold disposed between the cavity and a runner in order to form the runner in plate thickness directions of the flat plate portion starting from the other surface. The runner is used to fill the cavity.

Abstract: A mold includes a first groove part and a second groove part. The first groove part extends with a constant length or a constant width from a center part to an outer circumferential part of the mold. The second groove part extends from a terminal end of the first groove part on an outer circumferential part side of the first groove and merges with any portion of the first groove part. A molding manufacturing method includes manufacturing a preform by semimolten die casting or semisolid die casting using the mold. The method may also include removing a portion of the preform corresponding to the second groove part.

Abstract: A process for the production of a semi-solidified iron alloy slurry having a crystallized solid phase and a residual liquid phase, wherein a material having a hypoeutectic cast iron composition is used, and an additive agent having a boiling point that is lower than at least a crystallization initiation temperature of primary crystals of the material is added to a melt of the material when the melt temperature is within a specific temperature range of not lower than the crystallization initiation temperature of the primary crystals and not greater than a temperature that is 50° C. higher than the crystallization initiation temperature, to thereby simultaneously conduct the stirring of the melt by the boiling of the additive agent and the cooling of the melt to a temperature falling within a semi-solidification temperature range thereof.

Abstract: A process for producing a semi-solidified slurry of an iron alloy including the steps of pouring a melt of an iron alloy into a semi-solidified slurry producing vessel 30 and cooling the melt therein to obtain a semi-solidified slurry having a crystallized solid phase and a residual liquid phase, wherein a hypereutectoid or hypoeutectic cast iron composition containing 0.8-4.3 wt. % C is used as a material, a melt of the composition is poured into the semi-solidified slurry producing vessel in a predetermined amount at a time, a temperature of the melt when poured into the semi-solidified slurry producing vessel is controlled to be not lower than a crystallization initiation temperature of the composition and not greater than a temperature that is 50° C. higher than the crystallization initiation temperature, and a cooling rate of the melt poured into the semi-solidified slurry producing vessel is controlled not to exceed 20° C. per minute.

Abstract: A process for the production of a semi-solidified iron alloy slurry having a crystallized solid phase and a residual liquid phase, wherein a material having a hypoeutectic cast iron composition is used, and an additive agent having a boiling point that is lower than at least a crystallization initiation temperature of primary crystals of the material is added to a melt of the material when the melt temperature is within a specific temperature range of not lower than the crystallization initiation temperature of the primary crystals and not greater than a temperature that is 50° C. higher than the crystallization initiation temperature, to thereby simultaneously conduct the stirring of the melt by the boiling of the additive agent and the cooling of the melt to a temperature falling within a semi-solidification temperature range thereof.

Abstract: A process for producing a semi-solidified slurry of an iron alloy including the steps of pouring a melt of an iron alloy into a semi-solidified slurry producing vessel 30 and cooling the melt therein to obtain a semi-solidified slurry having a crystallized solid phase and a residual liquid phase, wherein a hypoeutectic cast iron composition is used as a material, a melt of the composition is poured into the semi-solidified slurry producing vessel 30 in a predetermined amount at a time, a temperature of the melt when poured into the semi-solidified slurry producing vessel 30 is controlled to be not lower than a crystallization initiation temperature of the composition and not greater than a temperature that is 50° C. higher than the crystallization initiation temperature, and a cooling rate of the melt poured into the semi-solidified slurry producing vessel 30 is controlled not to exceed 20° C. per minute.

Abstract: A molded article includes a flat plate portion and a projected portion. A molding method includes filling a cavity with the semimolten or semisolid metal in plate thickness directions of the flat plate portion starting from a surface on an opposite side of the flat plate portion from the surface from which the projected portion projects. The cavity is a casting space of the molded article formed inside a forming mold. A molding apparatus for casting the molded article includes a forming mold having the cavity, and a separate insert or slide mold disposed between the cavity and a runner in order to form the runner in plate thickness directions of the flat plate portion starting from the other surface. The runner is used to fill the cavity.

Abstract: A mold includes a first groove part and a second groove part. The first groove part extends with a constant length or a constant width from a center part to an outer circumferential part of the mold. The second groove part extends from a terminal end of the first groove part on an outer circumferential part side of the first groove and merges with any portion of the first groove part. A molding manufacturing method includes manufacturing a preform by semimolten die casting or semisolid die casting using the mold. The method may also include removing a portion of the preform corresponding to the second groove part.

Abstract: A billet for a thixocasting process and a thixocasting process using the billet allows casting using a thixocasting process to be realized at low production cost without permeation of an oxide film to the inside of the billet in injection molding. In a billet used for a thixocasting process continuously cast by intermittently drawing out, the interval of the oscillation marks is 10 mm or less and the maximum tilt angle of the oscillation marks relative to a cross section which is at a right angle to the drawing out direction is 45° or less.