RU140334U1 - HORIZONTAL GATEWAY SYSTEM FOR MAKING CASTINGS WEIGHT UP TO 100 KG - Google Patents

Abstract

A horizontal sprue system for producing castings weighing up to 100 kg, containing a sprue bowl, a vertical cylindrical riser, a horizontal slurry trap horizontally located in the upper half-mold, feeders placed perpendicular to the slag trap in the lower half-mold, and a filter system, characterized in that the vertical cylindrical riser is located in the center of the mold above the slag trap placed on both sides of the vertical cylindrical riser symmetrically to its axis, while on each side of it is alternately installed Two filter systems were installed and two feeders were allocated perpendicularly to the slag trap from each filter system, and two core inserts with a cross section in the form of a rhombus were fixed on both sides of the riser at a distance of 50-100 mm across the slag trap.

Description

This utility model relates to foundry, namely, devices for supplying molten metal and can be used in the manufacture of horizontal gating systems for the manufacture of castings weighing up to 100 kg, with the location of the gating cup and vertical cylindrical riser in the center of the mold, using core inserts facilitating the separation of the gating system into parts.

Closest to the claimed utility model is a horizontal sprue system consisting of a sprue bowl, a vertical cylindrical riser, a filter system including a sump, a filter and a chamber for surfacing slag inclusions, as well as a slag trap and two feeders located perpendicular to the slag trap in the lower half-mold. (Iron casting in machine tool building. Edited by G.I. Kletskin. M., "Mechanical Engineering", 1975, 320 pp. Sludge, fig. 140a).

The disadvantages of the known gate system are:

- the need for an individual approach in the design and manufacture of the gating system for different configurations of castings;

- the great complexity of manufacturing;

- frequent readjustment of the automatic molding line in the manufacture of a large range of castings;

- the difficulty of separating the sprue system into parts in the tumbling drum;

- insufficient quality of castings due to ingress of slag and sand inclusions in the feeders and body of the castings;

- possible destruction of the filter in the filter system due to the ingress of the first portion of metal on it.

The claimed technical solution is aimed at expanding technological capabilities, reducing the complexity of manufacturing, reducing loss of time for readjustment, facilitating the separation of the gating system into parts in the tumbling drum, improving the quality of castings, preventing possible destruction of the filter in the filter system.

The technical result is achieved by the fact that in a horizontal gating system for manufacturing castings weighing up to 100 kg, containing a gating cup, a vertical cylindrical riser, a slag trap horizontally located in the upper half-mold, feeders placed perpendicular to the slag catcher in the lower half-mold, and a filter system, a vertical cylindrical riser but the center of the form above the slag trap placed on both sides of the vertical cylindrical riser symmetrically to its axis, while on each of its two filter systems are alternately installed on the side and two feeders are allocated perpendicular to the slag trap from each filter system, and two core inserts with a cross section in the form of a rhombus are fixed on both sides of the riser at a distance of 50-100 mm across the slag trap.

In Fig.1 shows a horizontal gating system for the manufacture of castings weighing up to 100 kg, General view;

Figure 2 is a section aa in figure 1;

Figure 3 is a section bB in figure 1.

A horizontal sprue system for the manufacture of castings weighing up to 100 kg contains a sprue bowl 1, a vertical cylindrical riser 2 located in the center of the mold above the slag trap 3. Slurry trap 3 is placed on both sides of the vertical cylindrical riser 2 symmetrically to its axis. Two filter systems 4 are alternately installed along the slag trap 3 with respect to each side of the vertical cylindrical riser 2. Two feeders 5 are allocated perpendicularly to the slag trap 3 from each filter system 4. core inserts 6.

The sprue bowl 1 is a funnel and is designed to receive a dose of molten metal from the bucket. The vertical cylindrical riser 2 is a vertical cylindrical channel for supplying molten metal from the gate 1 to other elements of the gate system. Slag trap 3 is a trapezoidal channel horizontally located in the upper half-mold 7.

Feeders 5 are trapezoidal channels horizontally located in the lower half-mold 8 and are designed to supply metal to the casting.

The core inserts 6 are made of a sand-resin mixture and in cross section are a rhombus, the acute angle of which crosses the cross section of the slag trap 3. Due to the fact that the fracture cross section is smaller than the cross section of the slag trap 3, the core inserts 6 are easily destroyed, separating the horizontal gating system for manufacturing castings weighing up to 100 kg in parts in a tumbling drum. If the distance from the vertical cylindrical riser 2 to the rod insert 6 is less than 50 mm, the rod insert 6 will be located directly below the vertical cylindrical riser 2 and will cease to fulfill its function, since the cross section at the kink will be greater than the section of the slag trap 3. If the distance from the vertical cylindrical riser 2 to the core insert 6 will be more than 100 mm - the core insert 6 will be more difficult to break by reducing the distance from the core insert 6 to the edge of the slag trap 3.

The design of the horizontal gating system makes it possible to produce castings of various configurations weighing up to 100 kg with overall dimensions of 400 × 300 mm, 400 × 600 mm and 300 × 800 mm due to the location of the slag trap 3 on both sides of the vertical cylindrical riser 2, located in the center of the mold, symmetrically axis, which makes it possible to rationally arrange the castings in the mold.

Using a horizontal sprue system for the manufacture of castings reduces the complexity of the design and manufacturing process, as it allows its use for the manufacture of castings of various configurations weighing up to 100 kg with overall dimensions of 400 × 300 mm, 400 × 600 mm and 300 × 800 mm.

Horizontal gating system for the manufacture of castings weighing up to 100 kg works as follows.

The molten metal enters the sprue bowl 1, then into the cylindrical vertical riser 2, slag trap 3, passes through the filter system 4, feeders 5, fills the mold. After filling the horizontal gate system, the mold is cooled and the metal solidifies. Next, the castings are knocked out from the gating system on a vibrating grate and the gating system is divided into parts in the tumbling drum. Due to the presence of two rod inserts 6 with a rhombic cross section fixed on both sides of a cylindrical vertical riser 2 at a distance of 50-100 mm across the slag trap, the gating system is easily divided into parts, since the cross section at the break is less than the cross section of the slag trap 3.

Thus, the horizontal gating system creates optimal conditions for obtaining high-quality castings weighing up to 100 kg.

Using the proposed technical solution allows you to:

- expand technological capabilities due to the location of the slag trap on both sides of a vertical cylindrical riser placed in the center of the mold, symmetrical to its axis, which makes it possible to rationally arrange castings of various configurations weighing up to 100 kg with overall dimensions of 400 × 300 mm, 400 × 600 mm and 300 × 800 mm;

- reduce the complexity of manufacturing due to the lack of the need to design and manufacture a new gate-feeding system for castings of various configurations and various geometric sizes weighing up to 100 kg;

- reduce the loss of working time for frequent readjustment of the automatic molding line due to the fact that the design of the horizontal gating system allows to produce castings of different configurations and various geometric sizes weighing up to 100 kg;

- to facilitate the separation of the horizontal gating system into parts in the tumbling drum due to the fact that across the slag trap at a distance of 50-100 mm from the vertical cylindrical riser, two core inserts are fixed on both sides, made with a cross-section in the form of a rhombus, the acute angle of which extends across the cross-section slag trap;

- to improve the quality of castings due to the fact that two feeders are allocated perpendicularly to the slag trap from each filter system, as a result of which metal purified from sand blockages and slag inclusions immediately enters the casting body from the feeder;

- to prevent possible destruction of the filter due to the fact that the filter systems are located along the slag trap relative to each side of the vertical cylindrical riser in turn, which protects the filter from water hammer when the first portion of metal gets on it.

Claims (1)

A horizontal sprue system for producing castings weighing up to 100 kg, containing a sprue bowl, a vertical cylindrical riser, a horizontal slurry trap horizontally located in the upper half-mold, feeders placed perpendicular to the slag trap in the lower half-mold, and a filter system, characterized in that the vertical cylindrical riser is located in the center of the mold above the slag trap, placed on both sides of the vertical cylindrical riser symmetrically to its axis, while on each side of it stand alternately Two filter systems were installed and two feeders were allocated perpendicular to the slag trap from each filter system, and two core inserts with a cross section in the form of a rhombus were fixed on both sides of the riser at a distance of 50-100 mm across the slag trap.

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