CN112658209B

CN112658209B - Flashboard tectorial membrane sand shell mould

Info

Publication number: CN112658209B
Application number: CN202011402171.9A
Authority: CN
Inventors: 郭威; 唐世兵
Original assignee: Jiangsu Yawei Foundry Material Technology Co ltd
Current assignee: Jiangsu Yawei Foundry Material Technology Co ltd
Priority date: 2020-12-02
Filing date: 2020-12-02
Publication date: 2024-04-05
Anticipated expiration: 2040-12-02
Also published as: CN112658209A

Abstract

The invention discloses a flashboard precoated sand shell mold which is communicated with a plurality of flashboard castings through a riser and a pouring port, wherein the flashboard castings comprise T-shaped grooves arranged on the peripheral wall, the flashboard castings incline away from a Z symmetrical plane, the inclination angle is 20 degrees, the flashboard castings incline away from a Y symmetrical plane, and the included angle between the T-shaped grooves and the Y symmetrical plane is 45 degrees; on the other hand, the T-shaped groove is positioned below a solidification line in solidification, and the whole space of the flashboard is relatively more downward, so that the flashboard is easier to fill in molten steel pouring, and meanwhile, the structure ensures that the pressure required by molten steel entering the T-shaped groove part of the flashboard is smaller in solidification of the flashboard.

Description

Flashboard tectorial membrane sand shell mould

Technical Field

The invention relates to the technical field of casting of precoated sand flashboard, in particular to a flashboard precoated sand shell mold.

Background

The prior precoated sand flashboard mould is vertically operated, and the consequence is that the height of a pouring cup is required to be increased when pouring is carried out, so that molten steel has enough gravity pressure to reversely flow into the upper part of a casting and reach a certain density. Thus, the volume of the flashboard casting is increased, and more steel materials and electric energy are wasted.

The existing similar product technology in the market has the defects of unsatisfactory casting of the T-shaped groove part of the flashboard, shrinkage of the T-shaped groove part during casting (when the casting is solidified by molten liquid, the shrinkage is necessarily lower than that of a product with supplement when the casting is not supplemented by the molten liquid, the shrinkage is finished to a certain extent, the product can only be scrapped), low finished product rate, high rejection rate, long polishing time of the water inlet, uneven polishing of the water inlet, scum on the processing surface and the like.

Based on the method, the invention designs the flashboard precoated sand shell mold, so that the whole density of the casting is compact without shrinkage porosity, the casting density of the flashboard T-shaped groove is high, no bad defective products are generated, the polishing time is shortened, and the productivity and the appearance flatness are improved.

Disclosure of Invention

The invention aims to provide a flashboard precoated sand shell mold so as to solve the problems.

In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a flashboard tectorial membrane sand shell mould, includes pouring basin, gate, a plurality of flashboard foundry goods, rising head, the pouring basin passes through rising head, gate and a plurality of flashboard foundry goods intercommunication, the flashboard foundry goods is including setting up T type groove on the perisporium, and the flashboard foundry goods that is located the rising head left and right sides sets up with rising head center Z symmetry plane symmetry, and the flashboard foundry goods that is located rising head front and back both sides sets up with rising head center Y symmetry plane symmetry, the flashboard foundry goods is to keeping away from Z symmetry plane slope, and inclination is 20, the flashboard foundry goods is to keeping away from Y symmetry plane slope, contained angle between T type groove and the Y symmetry plane is 45.

Compared with the prior art, the invention has the beneficial effects that: according to the invention, by changing two angles of the flashboard, on one hand, the top of the flashboard casting can be reduced, molten steel can enter more easily, the height of the pouring cup can be reduced under the same pressure condition, and meanwhile, the size of a riser is reduced; on the other hand, the T-shaped groove is positioned below a solidification line in solidification, and the whole space of the flashboard is relatively more downward, so that the flashboard is easier to fill in molten steel pouring, and meanwhile, the structure ensures that the pressure required by molten steel entering the T-shaped groove part of the flashboard is smaller in solidification of the flashboard.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of the structure of the present invention;

FIG. 2 is a side view of the present invention;

FIG. 3 is a front view of the present invention;

FIG. 4 is a schematic diagram of the present invention in front view compared to the prior art;

FIG. 5 is a side view of the present invention in comparison to the prior art;

fig. 6 is an assembly view of the present invention after production of a precoated sand shell.

In the drawings, the list of components represented by the various numbers is as follows:

1. a pouring cup; 2. riser; 3. a sprue gate; 4. a flashboard casting; 5. t-shaped groove.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Example 1

Referring to fig. 1-3, the present invention provides a technical solution: the utility model provides a flashboard tectorial membrane sand shell mould, including pouring basin, gate, a plurality of flashboard foundry goods, the rising head, the pouring basin is molten steel pouring department, traditional technique is in order to make flashboard T type groove department have moderate pressure, the gate needs to design the height according to flashboard size and T type groove's height, T type groove is the structure of flashboard foundry goods, because the product strength requirement of foundry goods, this position must be above that, the rising head is used for storing molten steel, when the flashboard foundry goods solidifies, constantly provides molten steel for the flashboard foundry goods, production space when preventing foundry goods solidification shrink. The pouring gate is the molten steel inlet port of flashboard foundry goods, the pouring cup is through rising head, pouring gate and a plurality of flashboard foundry goods intercommunication, the flashboard foundry goods is including setting up T type groove on the perisporium, the flashboard foundry goods that is located rising head left and right sides sets up with rising head center Z symmetry plane symmetry, the flashboard foundry goods that is located rising head front and back both sides sets up with rising head center Y symmetry plane symmetry, the flashboard foundry goods is to keeping away from Z symmetry plane slope, inclination is 20, the flashboard foundry goods is to keeping away from Y symmetry plane slope, contained angle is 45 between T type groove and the Y symmetry plane.

The specific working principle is as follows:

as shown in FIG. 4, the gate plate casting of the prior art adopts a vertical structure, and in order to enable molten steel to have enough gravity pressure to reversely flow into the upper part of the casting and reach a certain density, the height of a pouring cup needs to be increased.

Since the solidification of the casting is from the upward solidification, when the solidification reaches the solidification line of the pouring gate (the highest position is the uppermost edge of the pouring gate), the solidification of the gate plate can no longer obtain the molten steel injection of the riser, so that the smaller the space of the T-shaped groove is, the less the shrinkage is easily caused, and as shown in fig. 5, the molten steel injection can not be obtained at the T-shaped groove position above the solidification line after the molten steel is solidified at the lower part of the solidification line by adopting the prior art. The larger the space at this location, the greater the probability of shrinkage and the higher the rejection rate. According to the invention, the angle of the T-shaped groove is changed, so that the T-shaped groove is positioned below a solidification line in solidification, and the whole space of the flashboard is relatively more downward, so that molten steel is easier to fill in pouring, and meanwhile, the structure ensures that the pressure required by molten steel entering the T-shaped groove part of the flashboard is smaller when the flashboard is solidified.

When the method is used, after receiving a flashboard order, a factory firstly measures the size of the flashboard according to an order drawing, generates a casting integral graph through software, and adjusts the angle of the flashboard according to the height of a T-shaped groove of the flashboard and the size of the flashboard. The angle of the T-shaped groove is firstly adjusted to be 45 degrees according to the size of the flashboard, and then the angles of the two flashboards relative to the riser are adjusted to be 20 degrees according to the size of the flashboard. When the casting space diagram is designed, a precoated sand shell mold can be generated according to the space, as shown in fig. 6. The precoated sand shell can be assembled and produced after the production. When molten steel is poured, the molten steel is filled up from bottom to top under the action of gravity, and when the position of the T-shaped groove is reached, the riser space is required to be continuously filled with molten steel and the pouring cup is required to be filled up so that the inside of the T-shaped groove is maintained under enough pressure. Compared with the prior art, the invention has the advantages that the space of the riser is smaller, and the space higher than the pouring opening is also smaller, so that the quantity of the poured molten steel is smaller. After the molten steel is completely solidified, the casting can be subjected to the next treatment.

By adopting the flashboard precoated sand Sha Kemo tool, more molten steel and electric energy consumption can be saved. The method is characterized in that the method is only characterized by changing angles, but the reduced cost is quite large, the production of general casting products is calculated by tonnage, when the utilization rate of one ton of molten steel is increased by 1%, the scrap rate is reduced by 1% and the corresponding electric energy is saved, the scrap rate is reduced by 10 kg of steel, the corresponding electric energy is saved, the general production batch of the products is tens to hundreds of tons, and the saved materials and electric energy are quite small.

In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the invention disclosed above are intended only to assist in the explanation of the invention. The preferred embodiments are not exhaustive or to limit the invention to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand and utilize the invention. The invention is limited only by the claims and the full scope and equivalents thereof.

Claims

1. The utility model provides a flashboard tectorial membrane sand shell mould, includes pouring basin, gate, a plurality of flashboard foundry goods, rising head, the pouring basin passes through rising head, gate and a plurality of flashboard foundry goods intercommunication, the flashboard foundry goods is including setting up T type groove on the perisporium, its characterized in that: the flashboard castings positioned on the left side and the right side of the riser are symmetrically arranged on the Z symmetry plane of the center of the riser, the flashboard castings positioned on the front side and the rear side of the riser are symmetrically arranged on the Y symmetry plane of the center of the riser, the flashboard castings incline away from the Z symmetry plane, the inclination angle is 20 degrees, the flashboard castings incline away from the Y symmetry plane, and the included angle between the T-shaped groove and the Y symmetry plane is 45 degrees.