A slag collecting device for reducing inclusion defects

Abstract

The utility model relates to foundry device technical field especially relates to a kind of slag-collecting devices of reducing inclusion defect. Including: slag-collecting boss, it is set on the outer mould upper portion of pouring system close to casting boss, still including to gather the several slag-collecting parts of impurity in molten iron in the process of molten iron flow. By increasing slag-collecting boss above casting boss, the flow path and gathering area of molten iron are ingeniously changed, in the pouring process, molten iron can be more smoothly floated to slag-collecting boss under the action of gravity and its own fluidity. Slag-collecting boss can effectively avoid impurity stagnation on casting body. The quality condition of casting local position is fundamentally improved, the generation of aggregation defect is significantly reduced, and the yield and quality stability of casting are improved. The utility model solves the problem of casting aggregation depression caused by the aggregation of molten iron impurities in the casting process.

Description

Technical Field

[0001] This utility model relates to the field of casting equipment technology, and in particular to a slag collection device for reducing inclusion defects. Background Technology

[0002] In the casting production process, controlling the quality of castings is crucial. An in-depth analysis was conducted on defects appearing in a localized area of ​​the casting. Preliminary assessment indicates that the causes of these defects are complex, primarily including secondary oxide slag from the molten iron, coating scale, and impurities inherent in the molten iron itself. The structural design of this area of ​​the casting has certain unique characteristics, which hinder the natural floating of the molten iron during solidification. Under the combined effects of gravity and fluid dynamics, inclusions in the molten iron cannot be smoothly discharged and easily accumulate at this point, further leading to aggregated defects in the casting and severely affecting its quality and performance.

[0003] Existing casting methods exhibit significant limitations when dealing with localized clustering defects in castings with such unique structures. Traditional casting processes and techniques cannot effectively address the accumulation of secondary oxide slag, coating scale, and impurities in molten iron, nor can they improve the flow and flotation of molten iron at this special structure by adjusting process parameters.

[0004] Chinese Patent Publication No. CN205650771 U discloses a slag collection device for a gating system. The bottom of the pouring cup is connected to a sprue, and the bottom of the sprue is connected to a buffer pot. A runner is connected to the side of the sprue. The bottom of the runner is connected to the casting via an ingate. A certain number of slag-collecting bosses are added to the upper part of the runner to collect slag. During pouring, molten iron passes through the sprue and is buffered by the buffer pot, allowing it to enter the runner and then reach the casting via the ingate. Because the slag in the molten iron is lighter than the molten iron, it floats on top and is carried into the slag-collecting bosses on the runner, preventing slag from flowing into the casting and causing inclusions. The purpose of this invention is to collect slag and purify molten iron during pouring to reduce casting defects.

[0005] Therefore, the slag collection device of the gating system has the following problems: due to the special structure of the local boss area inside or near the casting body, such as dead corners, slow flow areas or local thickening, even if the gating system has been purified, secondary oxidation slag, coating skin and impurities from the casting process will still accumulate, causing the casting to have aggregated depressions. Utility Model Content

[0006] Therefore, this utility model provides a slag collection device to reduce inclusion defects, thereby overcoming the problem of aggregated depressions in castings caused by the accumulation of secondary oxidized slag, coating skin, and impurities in the casting process during the prior art.

[0007] To achieve the above objectives, this utility model provides a slag collection device for reducing inclusion defects, comprising:

[0008] A slag-collecting boss is located on the upper part of the outer mold of the casting system near the casting boss, and includes several slag-collecting sections for collecting impurities in the molten iron during the flow of molten iron.

[0009] Furthermore, the characteristic feature is that the cross-sectional shape of a single slag collection section is a trapezoidal structure.

[0010] Furthermore, the trapezoidal upper surface of each slag collection section is 76cm long and 16cm wide, while the lower surface is 88cm long and 22cm wide.

[0011] Furthermore, the feature is that a single slag collection part is connected to the cavity of the outer mold corresponding to the casting boss.

[0012] Furthermore, the feature is that several of the slag collection sections are arranged in a ring on the upper part of the outer mold.

[0013] Furthermore, the characteristic is that the height of a single slag collection section is 1 / 30 of the casting height.

[0014] Furthermore, the feature is that several of the slag collection parts are integrally formed and movably connected to the outer mold.

[0015] Furthermore, the feature is that several of the slag collecting parts are integrally formed and fixedly connected to the outer mold.

[0016] Furthermore, the feature is that the distance between two adjacent slag collection sections is 20cm.

[0017] Furthermore, the slag collection section is integrally formed with the outer mold.

[0018] Compared with existing technologies, the beneficial effects of this invention lie in its clever alteration of the flow path and accumulation area of ​​molten iron by adding a slag-collecting boss above the casting boss. During the pouring process, the molten iron, under the influence of gravity and its own fluidity, can float more smoothly to the slag-collecting boss. The slag-collecting boss effectively prevents impurities from remaining on the casting body. This fundamentally improves the quality of localized areas of the casting, significantly reduces the occurrence of aggregated defects, and increases the yield and quality stability of the casting.

[0019] Furthermore, by optimizing the casting structure and adding a slag-collecting device above the casting boss, the travel distance of the molten iron during its flow is increased. The molten iron flows along a longer path, allowing the slag more time and space to rise, significantly improving the quality of local castings, making the internal structure of the casting more dense and uniform, and effectively reducing aggregated defects caused by slag residue.

[0020] Furthermore, with the addition of a slag collection device, the molten slag can effectively float to the surface and be collected by the device, making it easier and more time-saving for workers to clean castings, significantly reducing labor intensity and greatly improving production efficiency.

[0021] Furthermore, by adding a slag collection device, the molten slag can be effectively controlled during the casting process. This method of controlling quality from the source greatly improves the product qualification rate and reduces production costs. Attached Figure Description

[0022] Figure 1 This is a cross-sectional view of a slag collection device for reducing inclusion defects according to an embodiment of the present invention;

[0023] Figure 2 This is a top view of a slag collection device for reducing inclusion defects according to an embodiment of the present invention;

[0024] Figure 3 Enlarged view of part B of the slag collection device for reducing inclusion defects according to this utility model;

[0025] In the diagram, 1-slag collecting boss; 11-slag collecting part; 2-casting boss; 3-outer mold; Detailed Implementation

[0026] To make the objectives and advantages of this utility model clearer, the utility model will be further described below with reference to the embodiments; it should be understood that the specific embodiments described herein are only for explaining this utility model and are not intended to limit this utility model.

[0027] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0028] It should be noted that in the description of this utility model, the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicating the direction or positional relationship are based on the direction or positional relationship shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this utility model.

[0029] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0030] Please see Figures 1-3 As shown, Figure 1 This is a cross-sectional view of a slag collection device for reducing inclusion defects according to an embodiment of the present invention; Figure 2 This is a top view of a slag collection device for reducing inclusion defects according to an embodiment of the present invention; Figure 3 Enlarged view of part B of the slag collection device for reducing inclusion defects in this utility model.

[0031] This utility model provides a slag collection device for reducing inclusions, comprising:

[0032] The slag-collecting boss 1 is located on the upper part of the outer mold 3 of the casting system near the casting boss 2, and includes several slag-collecting parts 11 for collecting impurities in the molten iron during the flow of molten iron.

[0033] Specifically, the cross-sectional shape of a single slag collection section 11 is a trapezoidal structure;

[0034] Specifically, the upper trapezoidal surface of each slag collection section 11 is 76cm long and 16cm wide, and the lower trapezoidal surface is 88cm long and 22cm wide.

[0035] Specifically, each of the slag collection parts 11 is connected to the cavity of the outer mold 3 corresponding to the casting boss 2;

[0036] Specifically, several of the slag collection sections 11 are arranged in a ring on the upper part of the outer mold 3;

[0037] Specifically, the height of a single slag collection section 11 is 1 / 30 of the height of the casting;

[0038] Specifically, several of the slag collection parts 11 are integrally formed and movably connected to the outer mold 3;

[0039] Specifically, several of the slag collection parts 11 are integrally formed and fixedly connected to the outer mold 3;

[0040] Specifically, the distance between two adjacent slag collection sections is 20cm;

[0041] Specifically, the slag collection part 11 is integrally formed with the outer mold 3;

[0042] Specifically, in this embodiment of the invention, molten iron flows in from below the outer mold 3 of the casting system. When the molten iron flows through the casting boss 2, the secondary oxide slag, coating skin and impurities in the molten iron can float to the slag collection boss 1 and will not remain or remain very little on the casting body. This improvement enhances the local quality of the casting.

[0043] Specifically, in this embodiment of the invention, a slag-collecting boss 1 is added above the casting boss 2, cleverly altering the flow path and accumulation area of ​​the molten iron. During the pouring process, under the combined effect of gravity and its own fluidity, the molten iron can more efficiently converge upwards to the slag-collecting boss 1, greatly reducing the retention of molten iron and its entrained impurities in the casting body. This design optimization fundamentally improves the quality of local areas of the casting, significantly reduces the probability of aggregated defects, and increases the yield and quality stability of the casting.

[0044] The technical solution of this utility model has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.

[0045] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A slag collection device for reducing inclusion defects, characterized in that, include: A slag-collecting boss is located on the upper part of the outer mold of the casting system near the casting boss, and includes several slag-collecting sections for collecting impurities in the molten iron during the flow of molten iron.

2. The slag collection device for reducing inclusion defects according to claim 1, characterized in that, The cross-sectional shape of a single slag collection section is a trapezoidal structure.

3. The slag collection device for reducing inclusion defects according to claim 1, characterized in that, The upper trapezoidal surface of each slag collection section is 76cm long and 16cm wide, while the lower surface is 88cm long and 22cm wide.

4. The slag collection device for reducing inclusion defects according to claim 1, characterized in that, Each of the slag collection sections is connected to the cavity of the outer mold corresponding to the casting boss.

5. The slag collection device for reducing inclusion defects according to claim 1, characterized in that, Several of the aforementioned slag collection sections are arranged in a ring on the upper part of the outer mold.

6. The slag collection device for reducing inclusion defects according to claim 1, characterized in that, The height of a single slag collection section is 1 / 30 of the casting height.

7. The slag collection device for reducing inclusion defects according to claim 1, characterized in that, Several of the aforementioned slag collection parts are integrally formed and movably connected to the outer mold.

8. The slag collection device for reducing inclusion defects according to claim 1, characterized in that, Several of the slag collection parts are integrally formed and fixedly connected to the outer mold.

9. The slag collection device for reducing inclusion defects according to claim 1, characterized in that, The distance between two adjacent slag collection sections is 20cm.

10. The slag collection device for reducing inclusion defects according to claim 1, characterized in that, The slag collection section is integrally formed with the outer mold.

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