A die casting furnace system includes a die casting holding furnace unit defining a cavity for holding a molten metal. A dosing unit is disposed within the cavity and defines a dosing area disposed in fluid communication with the cavity for receiving the molten material during a pressurization of the cavity. The cavity of said die casting holding furnace unit has a first storage capacity and the dosing area of said dosing unit has a second storage capacity being less than the first storage capacity. An ultrasonic unit is operably coupled with the finitely sized dosing area and is configured to introduce vibration into the received molten material for facilitating the removal of gases from the received molten material. The treatment of the finitely sized dosing area with the ultrasonic unit leads to improved metal cleanliness and accuracy that is not achievable with prior art systems.

A method for casting a melt uses a melt container in which a melt receiving space is formed. The melt container has a spout in the form of a lance on the bottom on the melt container. The method includes the following steps: filling the melt container with melt, wherein the melt is introduced into the melt receiving space of the melt container from a crucible using a spout orifice of the lance; casting at least one cast workpiece with melt; filling the melt container with melt again. When filling the melt container with melt, more melt is received in the melt receiving space than is needed for casting the cast workpiece. Directly before the renewed filling of the melt container, a remainder of melt having an oxide skin formed at the melt surface is present in the melt receiving space of the melt container.

A method for casting a melt uses a melt container in which a melt receiving space is formed. The melt container has a spout in the form of a lance on the bottom on the melt container. The method includes the following steps: filling the melt container with melt, wherein the melt is introduced into the melt receiving space of the melt container from a crucible using a spout orifice of the lance; casting at least one cast workpiece with melt; filling the melt container with melt again. When filling the melt container with melt, more melt is received in the melt receiving space than is needed for casting the cast workpiece. Directly before the renewed filling of the melt container, a remainder of melt having an oxide skin formed at the melt surface is present in the melt receiving space of the melt container.

A gas pressure control apparatus that can control a pressure applied to a surface of molten metal with high accuracy. A gas pressure control apparatus includes a gas generation unit configured to generate nitrogen gas, and a pressure control unit configured to adjust a pressure of the nitrogen gas generated by the gas generation unit and to supply the nitrogen gas to a low-pressure casting apparatus. The pressure control unit includes a servo valve configured to control a flow rate of the nitrogen gas supplied from a tank and to cause the nitrogen gas to flow toward the low-pressure casting apparatus, and a pressure controller configured to adjust an opening degree of the servo valve based on a measured pressure Pm of the nitrogen gas supplied to the low-pressure casting apparatus.

A gas pressure control apparatus that can control a pressure applied to a surface of molten metal with high accuracy. A gas pressure control apparatus includes a gas generation unit configured to generate nitrogen gas, and a pressure control unit configured to adjust a pressure of the nitrogen gas generated by the gas generation unit and to supply the nitrogen gas to a low-pressure casting apparatus. The pressure control unit includes a servo valve configured to control a flow rate of the nitrogen gas supplied from a tank and to cause the nitrogen gas to flow toward the low-pressure casting apparatus, and a pressure controller configured to adjust an opening degree of the servo valve based on a measured pressure Pm of the nitrogen gas supplied to the low-pressure casting apparatus.

A metering device (10) for withdrawing and dispensing a melt consisting of or containing an oxide fibre reinforced oxide ceramic composite material.

A melt transport device includes a melt container, in which a melt receiving space is formed, and a spout, which is coupled to the melt container, wherein the spout includes a spout orifice which is flow-connected to the melt receiving space. Moreover, a gas valve is formed, which is flow-connected to the melt receiving space and which is configured for regulating the introduction of gas into the melt receiving space.

A melt transport device includes a melt container, in which a melt receiving space is formed, and a spout, which is coupled to the melt container, wherein the spout includes a spout orifice which is flow-connected to the melt receiving space. Moreover, a gas valve is formed, which is flow-connected to the melt receiving space and which is configured for regulating the introduction of gas into the melt receiving space.