JPS5925587Y2 - Funnel for melting die casting alloy - Google Patents

Description

[Detailed explanation of the invention] This invention was designed to recast into a spherical shape with a diameter of 80 to 120 mm in order to facilitate the rolling supply of molten steel, etc.
This funnel is used for pouring molten die-casting alloy into the spout of a casting mold, and has excellent heat retention and prevention of wetting of molten metal. It has a structure that can effectively prevent the adhesion and remaining of residue.

If the spout that opens and communicates with the shell of the casting mold is short or small, when pouring molten metal from a ladle, etc., use a funnel to receive the pouring hole, and pour small amounts from the outlet into the spout. It is necessary to prevent the overflow from occurring due to the inflow into the water.

However, if molten metal condenses and adheres to the funnel, there is a risk of clogging the outlet, so of course it is necessary to improve the heat retention to prevent condensation and the ability to prevent the hot water from getting wet. It is necessary to ensure that the nozzle drains well so that the entire amount of hot water that has been put into the funnel can quickly flow into the pouring spout. The hot water drips and deposits condensed metal on the surface of the casting mold, which impairs the efficiency of the casting operation.

The present invention eliminates this drawback.

An embodiment of the present invention will be described with reference to the accompanying drawings.

1 in the figure is alumina Al20340-60%, silica S
in.

A funnel made by compression molding a mixture of ceramic fibers with an average fiber diameter of 3 to 5 mmμ and an inorganic or inorganic and organic binder, the main component of which is 40 to 60%, and the bottom surface 3 of the cylindrical part 2 is conical. The nozzle opening 4 formed at the center of the bottom surface 3 is a stepped hole with an enlarged diameter portion 5 at the bottom.

The inner diameter of the cylindrical part 2 is around 1100rn, and the wall thickness is 4~
Make it around 10 mm.

The above-mentioned funnel 1 is fitted into the holder 11 from above, and a large number of casting molds 12 each having a cavity 13 and a short pouring spout 14 are moved intermittently on the bottom surface of the funnel 1 to form the pouring spout 14.
are sequentially aligned with the enlarged diameter portion 5 of the nozzle opening 4.

Further, at the upper opening of the funnel 1, a hot water ladle 15, which has scooped up a certain amount of the molten die casting 1-alloy, is swung as shown by the chain line to perform inclined pouring from the bridge-shaped portion 16.

As mentioned above, the funnel of the present invention is compression-molded with heat-resistant ceramic fibers mainly composed of alumina and silica mixed with a binder, so it has good heat retention and has a melting point of 400 to 500'. Frequent pouring of molten water of a relatively low-melting die casting alloy such as C not only maintains the heated temperature, but also prevents wetting of said hot water, so there is no risk of condensed metal adhering, even in small amounts. Even if some hot water gets on it, it does not solidify because of its good heat retention properties as described above, and can be washed away with the next injection of hot water.

Further, the nozzle port 4 is formed with an enlarged diameter part 5 at the lower part to form a stepped hole, and the outer circumference of the flow of hot water poured into the injection port 14 is surrounded by an air layer a in the enlarged diameter part 5, so that It cuts extremely well, and there is almost no possibility that hot water with high surface tension will adhere to the inner circumferential wall of the enlarged diameter portion 5.

For this reason, the hot water received from the hot water ladle 15 etc. is quickly poured into the pouring port 14 without leaving much of it inside the cylindrical part 2.
Even when the pouring spout 14 is separated from the lower part of the nozzle port 4 together with the casting mold 12, there is no problem such as unfilled hot water dripping.

The present invention has the structure and function as explained above, and has the effect of providing various functions required for a funnel used for intermittent pouring of solution die-casting alloy.

[Brief explanation of the drawing]

FIG. 1 is a vertical cross-sectional view showing an embodiment of the present invention, and FIG. 2 is a vertical cross-sectional view showing an example of its use. 1 → Funnel, 2 → Cylindrical part, 3 → Bottom, 4 → Nozzle nozzle, 5
→ Expanded diameter part.

Claims (1)

[Scope of utility model registration request] It is characterized by mixing ceramic fibers mainly composed of alumina and silica with a binder and compression molding them into a cylindrical shape with a conical bottom.The nozzle hole formed in the center of the bottom is made into a stepped hole with an enlarged diameter at the bottom. Funnel for melting die cast 1 ru alloy.