CN219074294U

CN219074294U - Die for lost foam casting high manganese steel

Info

Publication number: CN219074294U
Application number: CN202223034102.4U
Authority: CN
Inventors: 刘宜洁; 王娟宁; 李金荷; 赵敏; 王超; 李敬; 王瑞
Original assignee: Baiyin Hengcheng Machinery Manufacturing Co ltd; Baiyin Nonferrous Group Co Ltd
Current assignee: Baiyin Hengcheng Machinery Manufacturing Co ltd; Baiyin Nonferrous Group Co Ltd
Priority date: 2022-11-15
Filing date: 2022-11-15
Publication date: 2023-05-26
Anticipated expiration: 2032-11-15

Abstract

The utility model discloses a die for lost foam casting of high manganese steel, and belongs to the technical field of lost foam casting. Including sand box (6), sand box (6) upper portion opening, inside slope of sand box (6) sets up foam pattern (5), the top of foam pattern (5) is connected with riser (1), riser (1) are through runner and pouring basin (2) intercommunication that sand box (6) top set up. According to the utility model, the riser and the pouring cup are communicated to promote the metal hydraulic pressure, so that the feeding force is increased, and the feeding is completed to promote the quality of the riser of the product; according to the utility model, the foam pattern is obliquely arranged to perform oblique pouring, so that the fluidity of the large flat plate type casting is increased, and the overall quality of the product is improved. The utility model effectively improves the product quality, avoids the shrinkage porosity and shrinkage cavity defects of castings, and improves the appearance quality of castings.

Description

Die for lost foam casting high manganese steel

Technical Field

The utility model relates to the technical field of lost foam casting, in particular to a die for lost foam casting high manganese steel.

Background

At present, there are several factors affecting product quality in lost foam high manganese steel casting, such as: the quality of the white mold for foaming, the selection of the coating and the brushing method, and the sand filling of the resin sand are related to factors such as casting method, speed, temperature and the like. The cast piece poured by the traditional high manganese steel casting lost foam pouring die can have serious phenomena of shrinkage porosity, shrinkage cavity, cracks, air holes, slag holes and the like at the product position at the riser, and the phenomena of shrinkage porosity, skin shrinkage, air holes and the like at other positions of the product. Shrinkage porosity of the cast part can seriously affect the quality of products, and the service life of the cast part can be shortened when the cast part is used marginally. The reason is that the shrinkage of the high manganese steel at the riser of the die is larger in the pouring and cooling process, and the molten metal cannot be fed effectively, so that the phenomena of shrinkage porosity, shrinkage cavity, cracks and air holes of the product occur.

Disclosure of Invention

The utility model aims to provide a die for lost foam casting high manganese steel, which is used for finishing feeding and improving the quality of a riser of a product by improving the pressure of molten metal and increasing feeding force, and improving the fluidity of the molten metal of a large flat plate type casting by oblique pouring and improving the overall quality of the product, so that the problems in the prior art are solved.

The technical scheme adopted by the utility model is as follows:

the utility model provides a die for lost foam casting high manganese steel, includes sand box 6, sand box 6 upper portion opening, the inside slope of sand box 6 sets up foam pattern 5, the top of foam pattern 5 is connected with riser 1, riser 1 communicates with pouring cup 2 that sand box 6 top set up through the runner.

The pouring gate is composed of an inner pouring gate 4 and a straight pouring gate 3, one end of the inner pouring gate 4 is connected to the riser 1, the other end of the inner pouring gate 4 is connected with the lower end of the straight pouring gate 3, and the upper end of the straight pouring gate 3 is connected with the bottom of the pouring cup 2.

The in-gate 4 is communicated with the side wall of the lower part of the riser 1.

The foam pattern 5 has an inclination angle of 10 ° with respect to the horizontal.

The riser 1 is arranged at the upper part of the foam pattern 5 perpendicular to the horizontal plane.

In summary, due to the adoption of the technical scheme, the beneficial effects of the utility model are as follows:

according to the utility model, the riser and the pouring cup are communicated to improve the metal hydraulic pressure, so that the feeding force is increased, and the feeding is finished to improve the quality of the riser of the product; according to the utility model, the foam pattern is obliquely arranged to perform oblique pouring, so that the fluidity of the large flat plate type casting is increased, and the overall quality of the product is improved.

In conclusion, the utility model effectively improves the product quality, avoids the defects of shrinkage porosity and shrinkage cavity of castings, and improves the appearance quality of castings.

Drawings

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

the figure shows: riser 1; a pouring cup 2; a sprue 3; a runner 4; foam pattern 5; and a sand box 6.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Example 1

As shown in fig. 1, this embodiment provides a mold for lost foam casting high manganese steel, including sand box 6, sand box 6 upper portion opening, the inside slope of sand box 6 sets up foam pattern 5, the top of foam pattern 5 is connected with riser 1, riser 1 communicates with pouring cup 2 that sand box 6 top set up through the runner.

The pouring gate is composed of an inner pouring gate 4 and a straight pouring gate 3, one end of the inner pouring gate 4 is connected to the side wall of the riser 1, the other end of the inner pouring gate 4 is connected with the lower end of the straight pouring gate 3, and the upper end of the straight pouring gate 3 is connected with the bottom of the pouring cup 2.

The application principle of the utility model is as follows: pouring molten metal from a steel ladle, pouring the molten metal into a pouring cup, flowing into a riser through a straight gate and an in-gate, flowing into the foam pattern through the bottom, enabling the molten steel to contact the foam pattern, enabling the foam pattern to burn and gasify rapidly (gas is sucked by negative pressure of a sand box), enabling a cavity to be filled with the molten steel after the foam pattern disappears, and enabling the molten steel to fill the whole cavity upwards from the lowest position of the foam pattern until the riser is full.

The utility model is suitable for high manganese steel lost foam castings with the weight of less than or equal to 200 kg. First, the method includes the steps of. The foam pattern brushed with the paint is buried in a sand box, the foam pattern is placed and inclined downwards by 10 degrees according to the horizontal direction, the riser is positioned at the highest position of the foam pattern (avoiding the edges and the angular positions of the foam pattern), and the riser is vertical to the ground. The temperature is controlled between 1450 ℃ and 1500 ℃ during casting, and the casting temperature is reduced to a certain extent according to the size of the casting, more than 100kg of the casting; the casting temperature is higher than 100 kg. According to the low-temperature fast pouring principle, the pouring process ensures slow opening, fast midway and stable flow receiving.

According to the utility model, through the combined arrangement of the pouring gate and the riser and the inclined arrangement of the foam pattern, the product quality is effectively improved, the defects of shrinkage porosity and shrinkage cavity of the casting are avoided, and the appearance quality of the casting is also improved.

Claims

1. The utility model provides a mould for lost foam casting high manganese steel, includes sand box (6), sand box (6) upper portion opening, its characterized in that, inside slope of sand box (6) sets up foam pattern (5), the top of foam pattern (5) is connected with riser (1), riser (1) are through pouring gate and pouring cup (2) intercommunication that sand box (6) top set up.

2. The mold for lost foam casting high manganese steel according to claim 1, wherein: the pouring gate is composed of an inner pouring gate (4) and a straight pouring gate (3), one end of the inner pouring gate (4) is connected to the riser (1), the other end of the inner pouring gate (4) is connected with the lower end of the straight pouring gate (3), and the upper end of the straight pouring gate (3) is connected with the bottom of the pouring cup (2).

3. The mold for lost foam casting high manganese steel according to claim 2, wherein: the inner gate (4) is communicated with the side wall of the lower part of the riser (1).

4. The mold for lost foam casting high manganese steel according to claim 1, wherein: the foam pattern (5) has an inclination angle of 10 DEG with respect to the horizontal plane.

5. The mold for lost foam casting high manganese steel according to claim 4, wherein: the riser (1) is arranged at the upper part of the foam pattern (5) perpendicular to the horizontal plane.