JPH0622341U - Powder production equipment - Google Patents

Abstract

(57) [Summary] [Purpose] To facilitate replacement of the recovery pot attached to the lower injection chamber, recovery of powder, and cleaning of the injection chamber. [Structure] The injection chamber is composed of two layers of an upper injection chamber 2 and a lower injection chamber 3, the upper injection chamber 2 is fixed to a pedestal 1, and the lower injection chamber 3 is attached to a carriage 4 with respect to the upper injection chamber 2. Detachable.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a powder production apparatus for producing metal powder by a gas atomization method, and more particularly to a powder production apparatus that makes it easy to take out produced metal powder.

[0002]

[Prior art]

 As a device for producing metal powder, a powder producing device using a gas atomizing method has been conventionally known. This equipment stores a metal sample in a melting crucible, melts it by induction heating, and injects it into a lower injection chamber from a melt nozzle provided at the bottom of the melting crucible. At this time, an inert gas is jetted at high speed from a gas jet nozzle provided at the lower end of the molten metal nozzle, and the molten metal jetted from the molten metal nozzle is made into metal powder by a gas atomizing method.

[0003]

[Problems to be solved by the device]

 However, according to the conventional powder production apparatus, the injection chamber for injecting metal powder from the molten metal nozzle by the gas atomization method is fixed to the pedestal, and the produced metal powder is stored in the recovery pot below the injection chamber. Will be collected. For this reason, the workability was poor because the metal powder had to be collected by taking out the collection pot from the gantry.

The present invention has been made in view of the above points, and provides a powder production apparatus in which a recovery pot can be easily replaced, and powder can be recovered and an injection chamber can be easily cleaned. With the goal.

[0005]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention melts a metal sample in a melting crucible by induction heating and introduces it into a lower injection chamber through a melt nozzle provided at the bottom of the melting crucible. In a powder production apparatus for producing a metal powder by injecting a gas onto the outer periphery of the lower end of a molten metal nozzle, the injection chamber is composed of two layers, an upper injection chamber and a lower injection chamber, and the upper injection chamber is fixed to a pedestal. It is characterized in that the lower injection chamber is attached to the carriage so that it can be attached to and detached from the upper injection chamber.

[0006]

[Action]

 According to the above configuration, when the recovery pot provided in the lower part of the lower injection chamber is taken out, the upper injection chamber and the lower injection chamber are separated, and then the lower injection chamber mounted on the carriage is pulled out, thereby The collection pot can be easily removed outside.

[0007]

【Example】

 An embodiment of the powder production apparatus of the present invention will be described below with reference to the drawings.

1 and 2 show the configuration of an embodiment of the present invention. FIG. 1 shows a schematic configuration of the powder manufacturing apparatus according to this embodiment. An upper injection chamber 2 is fixed on the gantry 1, and a lower injection chamber 3 is provided in close contact with the lower portion of the upper injection chamber 2. The lower injection chamber 3 is supported by a carriage 4 so as to be able to move up and down, and a recovery pot 5 for recovering the produced powder is detachably attached to the lower end of the lower injection chamber 3. The upper injection chamber 2 is provided with a front view window 6, a hot water receiving mechanism 7, and an internal lighting device 8, and a melting portion 9 is attached to the upper portion.

A gas jet nozzle 10 described later is provided between the melting section 9 and the upper injection chamber 2, and a gas release valve 11 is connected to the upper injection chamber 2. A melting chamber 12 is provided above the melting section 9, and the inside of the melting chamber 12 is evacuated by a vacuum exhaust device 13. A sample addition rod 13 for adding a metal sample and a shelving rod 14 are attached to the melting chamber 12. Reference numeral 15 in FIG. 1 is a surge tank, and reference numeral 16 is a compound meter.

FIG. 2 shows a detailed configuration of the melting section 9. A coil 22 for induction heating is wound around the outer cylinder 21 of the melting section 9, and a melting crucible 24 is placed on a bottom plate 23 inside the outer cylinder 21 via a carbon sheet 25. . The bottom plate 23 of the outer cylinder 21 is mounted on the upper injection chamber 2 via a water-cooled copper plate 26, and the bottom of the melting crucible 24, the bottom plate 23, and the upper wall of the upper injection chamber 2 have concentric holes. Portions 24a, 23a and 2a are formed. A molten metal nozzle 27 is attached to the holes 24a and 23a, and a gas jet nozzle 10 is attached to the hole 2a.

An inverted conical recess 27a of about 90 degrees is formed on the upper end surface of the melt nozzle 27, and the melt nozzle 27 is lifted by a stopper 28 driven by a cylinder 18 shown in FIG. Is opened and closed. The lower end of the melt nozzle 27 is fitted in the center hole of the gas jet nozzle 10, and a large number of injection holes (not shown) are concentrically formed on the outer periphery of the center hole of the gas jet nozzle 10. Then, an inert gas such as Ar supplied through the pipe 29 passes through the jet nozzle 10 and is jetted from the jet holes. A gate valve 30 for opening and closing the central hole is provided on the lower surface of the central hole of the gas jet nozzle 10.

In the powder manufacturing apparatus configured as described above, the melting crucible 24 containing the metal sample is placed in the melting section 9 that is evacuated by the vacuum evacuation device 13, and the melting nozzle 27 Is closed by a stopper 28. When a high frequency voltage is applied to the coil 22, the metal sample in the melting crucible 24 is induction-heated and melted. Next, the molten metal is pressurized in the melting chamber 12 so as to be discharged, and at the same time the gate valve 30 is opened, the molten metal stopper 28 is raised by driving the air cylinder 31, and the initial molten metal discharge timer is used to set the initial molten metal discharge and the gas jet. An inert gas is supplied from the nozzle 10 and is injected from the injection hole to the outer periphery of the lower end of the molten metal nozzle 27. As a result, when opened, the molten metal becomes a powder due to the gas atomizing action and is recovered in the recovery pot 5 through the injection chambers 2 and 3. The inert gas injected into the upper injection chamber 2 is released to the outside via the gas release valve 11.

When the metal powder is collected in the collection pot 5, the lower injection chamber 3 is lowered using the jack 31 shown in FIG. 2 and the like, and separated from the upper injection chamber 2. Then, the trolley 4 is pulled out from the inside of the gantry 1, the recovery pot 5 is removed from the lower injection chamber 3, and the metal powder is recovered. Further, a new recovery pot 5 is attached to the lower injection chamber, the carriage 4 is moved into the gantry 1, and the lower injection chamber 3 is lifted by the jack 31 and brought into close contact with the upper injection chamber 2 to return to the original position. At this time, by sandwiching an O-ring or the like between the upper injection chamber 2 and the lower injection chamber 3, airtightness can be maintained and the powder can be collected and the injection chamber can be easily cleaned.

According to the present embodiment, the upper injection chamber 2 is fixed to the gantry 1, and the lower injection chamber 3 is supported by the carriage 4 so as to be able to move up and down, so that the carriage 4 is moved when the recovery pot 5 is taken out. By pulling it out of the gantry 1 together with the lower injection chamber 3, the recovery pot 5 can be easily replaced, and the powder can be recovered and the injection chamber can be easily cleaned.

[0015]

[Effect of device]

 As described above, according to the powder manufacturing apparatus of the present invention, the upper injection chamber is fixed to the base and the lower injection chamber is attached to the carriage so that the lower injection chamber can be pulled out from the base. It is possible to easily collect the powder and clean the injection chamber.

[Brief description of drawings]

FIG. 1 is a front view showing a schematic overall configuration of an embodiment of a powder producing apparatus of the present invention.

FIG. 2 is a vertical cross-sectional view showing a configuration of a melting section of FIG.

[Explanation of symbols]

1 Stand 2 Upper injection chamber 3 Lower injection chamber 4 Car 24 Melting crucible 27 Melt nozzle

Claims (1)

[Scope of utility model registration request] 1. A metal sample in a melting crucible is melted by induction heating, introduced into a lower injection chamber through a melt nozzle provided at the bottom of the melting crucible, and a gas is introduced around the lower end of the melt nozzle. In a powder producing apparatus for producing metal powder by jetting, the jetting chamber is composed of two layers of an upper jetting chamber and a lower jetting chamber, the upper jetting chamber is fixed to a gantry, and the lower jetting chamber is attached to a carriage. A powder production apparatus, which is detachable from the upper injection chamber.