CN201969836U - Pouring cup for pouring liquid metal in lost foam casting - Google Patents

Abstract

The utility model relates to a sprue cup used for pouring molten metal in lost foam casting. The sprue cup includes an upper cup mouth and a lower cup seat. The cup mouth of the upper cup mouth is an inverted bell mouth with a large upper part and a smaller bottom part; a concave pouring pool is provided in the middle of the lower cup seat, and the pouring pool is a pot with a large upper part and a smaller bottom part. The lower cup holder on the side of the pouring pool is provided with a through vertical short sprue, and the side of the pouring pool is connected to the upper part of the side of the vertical short runner; The axis lines are coaxial; the lower mouth of the vertical short sprue of the lower cup holder is provided with a filter mesh. The utility model has sufficient strength, high temperature resistance and a certain capacity, so as to prevent the molten metal from being poured from the pouring ladle, being damaged, burnt out and the molten metal overflowing; effectively preventing the impact of the molten metal on the sprue system, The sand washing defect of the casting is solved; the filter mesh is installed at the lower mouth of the vertical short runner of the lower cup seat, which solves the technical problem of inconvenient installation of the filter mesh in the lost foam casting process, and solves the defects such as inclusion of impurities in the casting; Low manufacturing cost.

Description

Sprue cup for pouring molten metal in lost foam casting

technical field

The utility model belongs to the technical field of lost foam casting, in particular to a sprue cup used for pouring molten metal in lost foam casting.

Background technique

The sprue cup and sprue of lost foam casting mainly have two structural forms, one is the integral type, that is, the sprue cup and the sprue are made of refractory material as a whole, and the cost is high, and the filter cannot be installed; the other is Split type, that is, the sprue cup is made of refractory material, and the filter screen cannot be installed. During the pouring process of lost foam casting, the sprue part is generally made of EPS foam material. The sprue made of EPS foam material is completely vaporized when it encounters high-temperature molten metal, so it cannot be fixed for filtering metal like sand casting. The filter mesh of liquid impurities, castings are prone to defects such as slag. On the other hand, due to the high temperature of the molten metal during pouring, it is easy to damage the sprue part, resulting in sand washing defects of the lost foam casting, and defects such as insufficient pouring due to obstruction of the molten metal.

Contents of the invention

In order to solve the defects in the existing sprue cup and sprue structure, the utility model provides a sprue cup for pouring molten metal in lost foam casting with improved structure.

The technical solution for realizing the above-mentioned purpose is as follows:

The sprue cup used for pouring molten metal in lost foam casting includes an upper cup mouth and a lower cup holder. The cup mouth of the upper cup mouth is an inverted bell mouth with a large top and a small bottom; The pouring pool is in the shape of a basin with a large top and a small bottom. The lower cup holder on one side of the pouring pool is provided with a through vertical short runner. One side of the pouring pool is connected to the upper part of the side of the vertical short runner; The axis line of the cup mouth is coaxial with the axis line of the pouring pool of the lower cup holder; the lower mouth of the vertical short sprue of the lower cup holder is provided with a filter mesh.

One side of the upper cup mouth corresponding to the upper port of the vertical short sprue of the lower cup holder is provided with a projection, and the projection closes the upper port of the vertical short sprue.

The materials of the upper cup opening and the lower cup holder are self-hardening sand or ceramics for casting.

The beneficial technical effects of the utility model are embodied in the following aspects:

1. The utility model has sufficient strength, high temperature resistance and a certain capacity to prevent the molten metal from being poured from the pouring ladle, being damaged, burnt out and the molten metal overflowing; the upper part of the cup is smooth and smooth transition, not to the metal The inflow of molten metal creates resistance; the pouring pool acts as a buffer for the inflowing molten metal, which effectively prevents the impact on the sprue system and solves the sand washing defects of castings. The lower mouth of the vertical short sprue of the lower cup holder is equipped with a filter mesh to filter impurities in the molten metal; it solves the technical problem of inconvenient installation of the filter mesh in the lost foam casting process and realizes effective protection of the molten metal. Filtration solves defects such as impurities in castings;

2. The utility model is convenient to manufacture and use, and has low cost.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Figure 2 is a schematic diagram of the upper cup mouth.

Fig. 3 is a B-B sectional view of Fig. 2 .

Figure 4 is a schematic diagram of the lower cup holder.

FIG. 5 is a cross-sectional view along line A-A of FIG. 4 .

Detailed ways

Below in conjunction with accompanying drawing, the utility model is further described by embodiment.

Example:

Referring to FIG. 1 , the sprue cup used for pouring molten metal in lost foam casting includes an upper cup mouth 2 and a lower cup seat 1 . The cup opening of the upper cup opening 2 is an inverted bell mouth with a large upper part and a smaller lower part, as shown in Fig. 2 and Fig. 3 . The middle part of the lower cup holder 1 is provided with a concave pouring pool. The pouring pool is in the shape of a basin with a large top and a small bottom. The upper part of one side of the runner, see Figure 4 and Figure 5. The axis line of the mouth of the upper cup mouth 2 is coaxial with the axis line of the pouring pond of the lower cup holder 1; the lower mouth of the vertical short runner of the lower cup holder 1 is provided with a filter mesh 3. A filter mesh can also be placed between the upper cup mouth 2 and the lower cup holder 1 as required.

Referring to Fig. 2 and Fig. 3, a protrusion is provided on one side of the upper cup opening 2 corresponding to the top of the short vertical runner of the lower cup holder, and the protrusion closes the upper port of the short vertical runner. The materials of the upper cup opening 2 and the lower cup holder 1 are self-printing sand or pottery for casting.

When pouring, the molten metal enters from the upper cup mouth 2; it is buffered in the pouring pool buffer zone of the lower cup holder 1, and then passes through the vertical short runner of the lower cup holder 1 and the filter mesh 3, and enters the sprue in the lost foam .

Claims (3)

1. be used for the cup of casting of molten metal in the lost foam casting, it is characterized in that: comprise rim of a cup and following cup, the described rim of a cup of going up rim of a cup is the up big and down small horn mouth that falls; Described down cup middle part is provided with a recessed pond of watering, and watering the pond is up big and down small peviform, and the following cup that waters pond one side is provided with a vertical short running channel that connects, and waters pond one side and is being communicated with vertical short running channel one upper lateral part; The rim of a cup axial line of last rim of a cup and following cup to water the pond axial line coaxial; The described vertical short running channel end opening place of cup down is provided with filtering net plate.

2. be used for the cup of casting of molten metal in the lost foam casting according to claim 1, it is characterized in that: be provided with a projection with the corresponding side that goes up rim of a cup of the upper port of the vertical short running channel of following cup, projection will vertically lack the upper port of running channel and be sealed.

3. be used for the cup of casting of molten metal in the lost foam casting according to claim 1, it is characterized in that: described rim of a cup and the following cup material gone up is casting with self-hardening sand or pottery.

Images