JPS5938867B2 - Melting and hot water supply equipment for casting - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a melting method and a hot water supply apparatus in a casting process such as die casting of high melting point alloys.

Conventional die-casting of high-melting point alloys involved melting pre-melted high-melting point alloys in melting furnaces of several to several hundred yen, which were made from refractories, and then being die-cast by heating hot water with a one-dollar device. .

However, this method has the disadvantage that it is difficult to obtain good products due to oxidation of the raw materials, etc. Also, die casting of high melting point alloys with melting points exceeding 1000°C is difficult due to the difficulty of melting methods and hot water supply. The reality is that other casting methods are being used.

The present invention eliminates such drawbacks, and the gist of the present invention is to provide melting and hot water supply equipment for die casting of high melting point alloys.
A plurality of melting crucibles each having a high-frequency melting means are provided in a rotary conveying means, and a powder or granular form of raw material is supplied to the melting crucible by a raw material supplying means, and the melting crucible is supplied with hot water to the die-casting machine main body by the rotary conveying means. The melting crucible is rotated to the vicinity of the mouth, at which time the melting crucible is tilted by a tilting means provided on the rotary conveying means, and the hot water of the raw material melted by the high frequency melting means is injected into the hot water supply mouth, We have made it possible to cast high-melting point alloys using the die-casting method, which was considered difficult until now.
This is a melting and pouring device.

The present invention will be described in detail below based on Examples.

FIG. 1 is a side view of the melting and pouring device used in this example.

1 is a die-casting machine main body, 2 is a hot water inlet for introducing molten metal into the die-casting machine, and 3 is a melting device having a high-frequency induction coil and a tilting device for injecting molten metal into the hot water inlet 2 during hot water supply. Crucible, 4 is a raw material supply hopper that allows raw material to be supplied in a fixed amount, 5 is a rotary table for sequentially rotating the crucible 3, 6 is a crucible tilting device γ
is an air cylinder for tilting the crucible.

Further, FIG. 2 is a three-dimensional representation of FIG. 1 to make it easier to understand.

Next, we will explain how to use this device.

First, the metal to be melted and supplied, such as stainless steel or nickel-based alloy, has a predetermined composition and is adjusted to a powder or granular shape of several millimeters, and is charged into the raw material hopper 4.

A solenoid valve is provided at the bottom of the hopper 4 so that a constant amount of raw material can always be charged into the crucible 3.

The raw material supplied into the crucible 3 is induction heated and melted by high frequency waves of several tens of kHz to several hundred kHz using a high frequency induction coil wound around the crucible 3.

, and the high-frequency induction coil of the crucible 3 is supplied with high-frequency power and coil cooling water from the crucible stand 5.

After a certain period of time, the crucible 3 is moved to the hot water inlet 2 by the rotary stand 5.
reach.

The rotary table 5 is rotated by a drive motor based on a preset sequence depending on the melting rate, temperature, etc. of the metal to be melted.

The crucible 3 that has reached the hot water supply port 2 is tilted by the crucible tilting device 6 and the crucible tilting air cylinder γ, and the molten metal is injected into the hot water supply port 2 and die-cast.

The crucible tilting device No. 6 starts air cylinders in response to signals from the microswitch and sequence controller when the crucible 3 is set to the hot water supply port 2.

The crucible 3 is tilted by the heater 7 and hot water is supplied.

As described above, raw material supply, melting, and pouring proceed sequentially by a preset sequence controller, and operate continuously for each shot.

Also a sequence controller for this device. The die-casting machine uses a microcomputer to control the melting temperature, high-frequency power supply, cycle time, and die-casting machine body according to the metal material being supplied.

As explained above, the present invention rapidly melts high melting point alloys and enables die casting without impairing the quality of the material, and automatically controls high melting point metal materials with temperatures exceeding 1000°C without requiring any input. , is an audience-like device that enables casting using the die-casting method.

This device is useful for precision processing when used in a die-casting device for exterior parts such as cases of mobile watches.

[Brief explanation of drawings]

FIG. 1 is a side view of the device of the invention, and FIG. 2 is a schematic three-dimensional representation. 1 is a die-casting machine main body, 2 is a hot water supply port, 3 is a melting crucible, 4 is a hopper for supplying raw materials, 5 is a rotary table for rotating the crucible, 6 is a crucible tilting device, and 1 is an air cylinder for crucible tilting.

Claims (1)

[Claims] 1. A plurality of melting crucibles each having a high-frequency melting means in a rotary conveying means, and tilting the melting crucible at a position where the melting crucible has been rotated by the rotary conveying means to near the hot water supply port of the die-casting machine main body, A melting and hot water supply device for casting, characterized in that it is provided with an inclined means for injecting hot water melted by a high frequency melting means into the hot water supply port.