摘要:
An apparatus and process are provided for controlling the heating and melting of a material that is non-electrically conductive in the solid state and is electrically conductive in the non-solid state. Power is selectively directed between coil sections surrounding different zones of the material in a susceptor vessel by changing the output frequency of the power supply to the coil sections. Coil sections are at least one active coil section, which is connected to the output of the power supply, and at least one passive coil section, which is not connected to the power supply, but is connected in parallel with a tuning capacitor so that the at least one passive coil section can be selectively operated at, or near, resonant frequency when the transition material in the vessel is molten. Depending upon the state of the transition material in the susceptor vessel, the frequency of the power applied to the active coil section can be changed to generate a magnetic field that selectively couples with the susceptor vessel, transition material in the vessel, and/or the passive coil section.
摘要:
Solid or semi-solid feedstock is melted in an open bottom electric induction cold crucible furnace. Directionally solidified multi-crystalline solid purified material continuously exits the bottom of the furnace and may optionally pass through a thermal conditioning chamber before being gravity fed into a transport mold where an ingot of the purified multi-crystalline solid material is transported to a remote holding area after the transport mold is filled with the multi-crystalline material and cut from the continuous supply of material. Cool down of the ingot is accomplished remote from the open bottom of the cold crucible furnace.
摘要:
An apparatus and process are provided for induction heating of a workpiece. The workpiece is moved through an inductor to inductively heat treat the workpiece with electric power of varying frequency and duty cycle or amplitude control to control the magnitude of electric power as the frequency changes. Alternatively the workpiece may be stationary and the inductor can be moved along the workpiece, or combined and coordinated movement of both the workpiece and inductor can be used.
摘要:
The present invention relates to a method of clamping a semiconductor assembly with a desired compression force equally distributed across the opposing surfaces of the devices and associated components of the semiconductor assembly.
摘要:
The present invention relates to a process wherein an intermediate form of titanium, namely titanium sponge, is produced by reduction of a feedstock of titanium in a reactant liquid bath, where the feedstock, titanium tetrachloride, is reduced by molten magnesium to titanium sponge, and the reactant liquid bath is inductively stirred during the reduction process. The reduction process with induced stirring is performed in an electric induction cold crucible, with or without a liner. Subsequent purification and melting of the titanium sponge can be accomplished in the electric induction cold crucible so that purified titanium can be supplied from the cold crucible.
摘要:
An apparatus and process are provided for forming a two-metal flat bonded article. A flat metal sheet in solid form is placed in the indention of a heat resistant plate. A second heat resistant plate is placed over the flat metal sheet in the indentation to form a flat metal sheet enclosure. The flat metal sheet enclosure is placed in a U-shaped inductor assembly embedded with a solenoidal induction coil. Supply of alternating current to the solenoidal induction coil inductively heats the flat metal sheet after which the sheet is withdrawn from the inductor assembly. The second heat resistant plate is removed and a bond metal in liquid form is placed over the top surface of the flat metal sheet in the indentation so that the two-metal flat bonded article is formed as the bond metal solidifies.
摘要:
An apparatus and process are provided for gradient induction heating or melting of a workpiece with a plurality of induction coils, each of the plurality of induction coils is connected to a power supply that may have a tuning capacitor connected across the input of an inverter. The plurality of induction coils are sequentially disposed around the workpiece. The inverter has a pulse width modulated ac power output that may be in synchronous control with the pulse width modulated ac power outputs of the other power supplies via a control line between the controllers of all power supplies.
摘要:
An apparatus and process are provided for bonding of materials by induction heating of an electrically conductive material upon which a second material is bonded. The electrically conductive material is induction heated between a first induction heating plate, and the combination of a frame and a second induction heating plate that is disposed within the frame. The second induction heating plate is removed from the surface of the electrically conductive sheet, while the frame continues to hold the electrically conductive sheet flat, and the second material, in liquid form, is poured into the interior opening of the frame in which the second induction heating plate was originally placed. The liquid material solidifies and bonds to the electrically conductive sheet to produce a bonded product. A continuous sheet of an electrically conductive material may be bonded to a continuous sheet of a second material by pressing them together and moving the pressed together materials through an induction coil to inductively heat the electrically conductive material and bond it with the second material.
摘要:
The invention presents an apparatus and method for dross removal from coating lines. The invention utilizes magnets to collect dross either in suspension or which has accumulated at or near the bottom of a coating pot. The invention utilizes the magnetic properties of the dross to separate the dross from the non-magnetic coating metal. The use of magnets allows for removal of dross from the coating metal without simultaneously removing valuable coating metal from the coating pot.
摘要:
A vibratory conveyor assembly including a material transporting trough driven by oscillating motion which imparts a force causing materials located in the trough to be advanced. The conveyor includes a continuous, unitary saddle plate attached about the trough perpendicular to a longitudinal axis of the trough. Actuators are coupled to the saddle plate which imparts the oscillating force to the trough.