A manufacturing method for a metallic housing of an electronic device is provided. The method includes providing a die-casting mold, including a male die and a female die engaging with the male die, the male die defining a pouring gate therein, and the female die defining a cavity therein corresponding to the pouring gate; positioning a metallic outer case in the cavity of the female die as an insert; assembling the male die to the female die to cover the cavity, thereby communicating the pouring gate with the cavity; casting pressured molten metal-alloy into the cavity via the pouring gate to form an inner structural member embedded in an inner side of the outer case; dissembling the male die from the female die to expose the cavity, and removing the outer case and the inner structural member from the female die.

First, it is determined in a determination step by a determination unit whether there is a nitrided layer on a surface of a water-cooled hole of a mold, by using an eddy current sensor. Next, in a shot step, when it is determined in the determination step that there is no nitrided layer, the surface of the water-cooled hole of the mold is shot-peened under a shot condition set according to a base material of the mold, and when it is determined in the determination step that there is the nitrided layer, the surface of the water-cooled hole of the mold is shot-peened under a shot condition which maintains a state where there is the nitrided layer.

A movable mold includes a movable mold main body and a gear piece attached to the movable mold main body so as to relatively movable, and having a cavity formation space for forming a cavity. In the gear piece, a piece-side coolant flow path includes an annular flow path surrounding the cavity formation space, a piece-side supply flow path introducing coolant into the annular flow path, and a piece-side discharge flow path introducing the coolant from the annular flow path. The piece-side coolant flow path is connected to a movable mold main body-side supply flow path of the movable mold main body and a movable mold main body-side discharge flow path of the movable mold main body and the coolant flows therein under negative pressure generated by a coolant circulation device, so the inside of the cavity can be cooled effectively.

System for cooling molds for metals or for metal alloys comprising one or more main conduits (6), each for transporting a main flow of a cooling carrier fluid containing compressed air and nebulized water, and a plurality of secondary conduits (7) connected to and originating from the main conduit (6) and each provided with a second transport section (S2) below the first transport section (S1) of the corresponding main conduit (6). The free end (70) of each secondary conduit (7) is susceptible of being inserted in a corresponding channel (5) of a duct (5) made in one of said half-molds (2A, 2B) of the mold (2). The main conduit (6) is provided with at least one shaped closed terminal portion (60) for distributing, into the secondary conduits (7) that radially depart therefrom, substantially equal secondary flows of the cooling carrier fluid, injecting them through the free ends (70) thereof into the corresponding channels (5) of each half-mold (2A, 2B).

A sprue system for a diecasting die includes at least one runner channel, which extends from an entry-side sprue mouth opening to an exit-side sprue opening, which opens into a die cavity of the diecasting die that is formed between a fixed die half and a movable die half or into a gate region arranged upstream thereof. The runner channel has a geometrically and/or thermally defined parting region upstream of the sprue opening and downstream of the sprue mouth opening. The runner channel has a bend or kink in the parting region and/or a heating device is assigned to a runner channel portion between the parting region and the exit-side sprue opening and/or a heating device is assigned to a runner channel portion adjoining the parting region upstream and narrowing conically toward the parting region and/or a region of the movable die half opposite the sprue opening has a cooling channel structure.

A method and device for pre-heating a first molding surface of a mold with an open position and a closed position defining a closed cavity between the first pre-heated molding surface and a second molding surface. A core is inductively heated outside the mold by placing the core inside a coil having an AC current passing there through. The core is inserted between the molding surfaces of the mold in the open position. The first molding surface is preheated by transferring the heat between the core and the first molding surface. The core is then removed and the mold is closed.

A method for controlling, in particular for temperature control, a casting process, in particular a gravity die casting process, including control of at least one input variable indicative of at least one input variable of the casting process, in particular as a function of at least one output variable indicative of at least one temperature of the casting process, in particular for a temperature of a casting mould. A temperature difference between the temperature of the casting process and a preset temperature profile is minimized. The control of the at least one input variable is based on a model predictive control. The present invention also relates to a control system for a casting process, in particular for a permanent mold casting process, a device including at least one processor and at least one memory as well as a computer program including program instructions.

Provided is a flow rate control device capable of suppressing variation of supply pressure caused by variation of set flow rate and suppressing influence of pressure loss and cavitation on a secondary side. The flow rate control device (18) includes: a flow rate regulating valve (19) that regulates a flow rate of fluid flowing in a flow path; a flow meter (20) that measures the flow rate of the fluid flowing in the flow path; and a control portion (21) that controls an opening degree of the flow rate regulating valve (19) based on a measurement result of the flow meter (20), the flow rate regulating valve (19) is a three-way valve for dividing to regulate fluid flowing in from an inflow port (24) to a first outflow port (25) and a second outflow port (26), the flow meter (20) is connected to the second outflow port (26) side, and a multistage throttle orifice (22) for decompressing the pressure of the fluid in stages is provided on the first outflow port (25) side.

A mold device for forming metal in a high-level vacuum environment. The mold device comprises a fixed mold, a movable mold adjoining the upper portion of the fixed mold to form a mold cavity, a closing plate placed closely on top of the movable mold, and an ejector pin extending through the closing plate and the movable mold into the mold cavity. Packing is disposed in a hole in the closing plate through which the ejector pin extends, thereby preventing atmospheric air from entering the mold cavity. There is a blocking space between the movable mold and the packing to prevent heat from being transferred to the packing. An exhaust unit creates a vacuum environment by drawing air from the mold cavity. The metal product is pushed out by the ejector pin.

A mold block includes a tool body with a contoured finished surface adapted to receive a tool insert having a forming surface for forming a bottle neck in a molding operation. The tool body defines an internal channel for heat transfer with the forming surface. At least a portion of the channel is offset generally equidistant from the finished surface to provide a path contoured for conformal cooling of the insert. The tool body has a pair of ports intersecting the channel. Several methods for forming a mold block are disclosed and include machining a contoured finished surface adapted to receive a tool insert on a tool body, forming a heat transfer channel within the tool body, and forming a pair of ports into the tool body. At least a portion of the channel is offset generally equidistant from the finished surface for conformal cooling of the insert.