CN216680104U

CN216680104U - Gating system of thin-wall casting

Info

Publication number: CN216680104U
Application number: CN202123090799.2U
Authority: CN
Inventors: 王家松; 杜应流; 陈丽; 郭延普; 刘正新
Original assignee: Anhui Yingliu Hangyuan Power Technology Co Ltd
Current assignee: Anhui Yingliu Hangyuan Power Technology Co Ltd
Priority date: 2021-12-10
Filing date: 2021-12-10
Publication date: 2022-06-07
Anticipated expiration: 2031-12-10

Abstract

The utility model discloses a pouring system of a thin-wall casting, which comprises a shell, a vertical pouring gate and an inner pouring gate, wherein the upper end of the vertical pouring gate is communicated with a pouring cup, the upper side and the lower side of the vertical pouring gate are communicated with the shell through the inner pouring gate, and the inner pouring gate on the upper side and the lower side is S-shaped and is distributed in a plurality of annular arrays around the vertical pouring gate; the utility model prevents molten steel from entering in advance by arranging the S-shaped inner sprue, avoids cold shut formation and greatly reduces the cold shut rejection rate of thin-wall castings.

Description

Gating system of thin-wall casting

Technical Field

The utility model relates to the technical field of precision casting, in particular to a pouring system of a thin-wall casting.

Background

The investment casting is also called lost wax casting, and comprises the procedures of wax pressing, wax trimming, tree forming, slurry dipping, wax melting, molten metal casting, post-treatment and the like. The existing large casting with large profile size, thin wall and small single weight adopts an annular runner, a plurality of ingates are arranged and are uniformly distributed on a shell, the thin wall and large area of the casting are considered, in order to ensure sufficient mold filling capacity and fast filling of the shell and ensure that molten steel quickly enters the shell, the existing measures are to increase the number of the ingates and the cross section area of the ingates, but the molten steel enters the ingates from a sprue cup in the pouring process and is dispersed, the molten steel of the plurality of ingates simultaneously enters the shell to generate turbulence and splashing, the molten steel flows slowly before converging, the edge temperature is lower, the molten steel flows in from the top ingates, the cold shut defect is caused, and the edge of the casting has the defect of non-fused cracks. Aiming at the problems, the most effective measure for solving the cold shut defect is to prevent molten steel from entering a casting through the top, and the cold shut defect is solved by researching and developing an S-shaped inner pouring gate because a top pouring gate plays the roles of feeding and exhausting and the top pouring gate cannot be removed.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide a pouring system of a thin-wall casting, which prevents molten steel from entering in advance by arranging an S-shaped inner pouring gate, avoids cold shut, greatly reduces the cold shut rejection rate of the thin-wall casting, and can effectively solve the problems in the background technology.

In order to achieve the purpose, the utility model adopts the technical scheme that: the utility model provides a gating system of thin wall foundry goods, includes the shell, erects and waters and ingate, the upper end intercommunication pouring basin of ingate, the upper and lower both sides of ingate are through ingate and shell intercommunication, the upper and lower both sides of ingate structure be the S type and be a plurality of round the annular array distribution of ingate.

Preferably, a slag collecting bag is arranged at the joint of the ingate and the vertical pouring channel.

Preferably, the ingate communicates with the outer sidewall of the shell.

Preferably, the position of the inner pouring channel close to the shell is an oval cavity.

Preferably, said ingate on the upper side is located above the mould shell and said ingate on the lower side is located below the mould shell.

Compared with the prior art, the utility model has the following beneficial effects: the utility model prevents molten steel from entering in advance by arranging the S-shaped inner sprue, avoids cold shut formation and greatly reduces the cold shut rejection rate of thin-wall castings.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

In the figure: 1. molding a shell; 2. a vertical pouring channel; 3. an inner pouring channel; 4. a pouring cup; 5. collecting a slag ladle; 6. an elliptical cavity.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the utility model easy to understand, the utility model is further described with the specific embodiments.

According to the thin-wall characteristic of a casting, the appearance size is larger, an annular vertical pouring gate side group scheme is adopted, six inner pouring gates are arranged, the cross section area of the pouring gates is increased, technical personnel use simulation software to simulate and pour, after the top inner pouring gates flow into molten steel to be converged, the molten steel flows slowly, the edge temperature is lower, cold shut is caused, the top inner pouring gates are designed to be S-shaped inner pouring gates, gas can be smoothly discharged out of air areas in cavities along with the molten steel from the S-shaped inner pouring gates in the mold filling process, the molten steel is full of the cavities from bottom to top, no turbulent flow phenomenon exists, the process is stable, the S-shaped inner pouring gates effectively prevent the molten steel from entering in advance, cold shut formation is avoided, and the rejection rate of the thin-wall casting cold shut is greatly reduced.

As shown in figure 1, a pouring system of a thin-wall casting is provided, which comprises a shell 1, a vertical pouring gate 2 and an inner pouring gate 3, wherein the upper end of the vertical pouring gate 2 is communicated with a pouring cup 4, the upper side and the lower side of the vertical pouring gate 2 are communicated with the shell 1 through the inner pouring gate 3, the inner pouring gate 3 on the upper side and the lower side is S-shaped and is distributed in a plurality of annular arrays around the vertical pouring gate 2, a slag collecting bag 5 is arranged at the joint of the inner pouring gate 3 and the vertical pouring gate 2, the inner pouring gate 3 is communicated with the outer side wall of the shell 1, an oval cavity 6 is arranged at the position of the inner pouring gate 3 close to the shell 1 to form a flaring inner pouring gate, which is beneficial to gas discharge, the inner pouring gate 3 on the upper side is positioned above the shell 1, the inner pouring gate 3 is positioned below the shell 1, so that molten steel is sequentially poured into the shell 1 from the inner pouring gate 3 on the lower part, a pouring cavity is filled with a pouring cavity from bottom to top, and no turbulence phenomenon occurs, the process is stable, the S-shaped ingate 3 effectively prevents the molten steel from entering in advance, and the formation of cold shut is avoided.

While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the utility model. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the utility model.

Claims

1. The utility model provides a gating system of thin wall foundry goods, includes the shell, erects and waters and ingate, the pouring basin is communicate to the erector upper end of watering, its characterized in that: the upper side and the lower side of the vertical pouring gate are communicated with the shell through the ingate, and the ingate structures on the upper side and the lower side are S-shaped and distributed in a plurality of annular arrays around the vertical pouring gate.

2. The gating system for thin-walled castings according to claim 1, wherein: and a slag collecting bag is arranged at the joint of the inner pouring channel and the vertical pouring channel.

3. The gating system for thin-walled castings according to claim 1, wherein: the ingate is communicated with the outer side wall of the shell.

4. The gating system for thin-walled castings according to claim 1, wherein: and the position of the ingate close to the shell is provided with an oval cavity.

5. The gating system for thin-walled castings according to claim 1, wherein: the ingate on the upper side is located above the shell and the ingate on the lower side is located below the shell.