Hitachi Metals, Ltd.

Takashi Kawai

Fumio Obata

Ryoji Takahashi

Michio Makino

Yoshimi Kubo

A cast iron melting process comprising the steps of charging recarburizer in the lower portion of an electric arc furnace, charging iron scraps, and charging oxidizing slag-forming agents and/or sponge irons, and/or blowing oxygen therein to make oxidizing slag, whereby a recarburizing reaction of an iron melt with the recarburizer is carried out in parallel with an oxidizing reaction of an iron melt with an oxidizing slag, thereby minimizing the loss of C and Si, while improving a recarburizing yield, with the resulting improvements in economy.

Cast iron melting process

Core conveyor means of the endless type moving synchronously or non-synchronously with one or more continuous casting devices is disposed in side-by-side relation with the continuous casting device or devices, and the conveyor means is moved in the same direction as the molds moving in the continuous casting device or devices. The cores supplied from a core supply source which may be a core making machine, a group of core making machines consisting of two or more core making machines or a core cage stack hose with stacker crane are fed through the agency of the core conveyor means to the continuous casting device or devices. By this arrangement, it is possible to supply cores quickly or smoothly or supply large numbers of cores of different types with a high degree of efficiency to the casting device or devices.

Core supply system for metal founding

A pouring ladle and a platform car for use therewith are disclosed, the aforesaid ladle having a partition wall therein which has a passage adjacent to its bottom for allowing the communication of the melts separated by said wall, said wall being positioned in said ladle between the inclining center, i.e., a fulcrum of said ladle and the center of gravity of the melt contained therein, thereby suppressing a wave-forming phenomenon accruing from the inclinging movement of the ladle, with the resultant smooth pouring operation. This ladle is mounted on a frame body of a platform car in a manner to permit its inclination toward a casting mold, said platform car being capable of travelling in synchronism with the speed of a mold conveyor and adapted to move in the direction toward the casting mold, thereby presenting improved efficiency for casting operation, coupled with improved safety.

Growing community of inventors

Tokyo, Japan

Takashi Kawai