JPS62254965A - Pouring ladle - Google Patents

Abstract

PURPOSE:To surely prevent the outflow of floating material in molten metal by inserting the tip of a regulating member into the recessed molten metal basin near a tapping hole and lowering its tip position at the time of finish pouring posture than the molten metal level at this time. CONSTITUTION:At near the tapping hole 1 of a pouring ladle 5, the recessed molten metal basin 13, in which a shelter plate 11 as the regulating member is inserted, is formed. The shelter plate 11 consists of refractory brick, and its length is set up, so as to come to the lower position for the tip position than the molten metal surface level at the time of the finish pouring posture of the ladle 5. Therefore, at the time of the pouring posture for the ladle, the floating material (slag) flowed to the tapping hole 1 is prevented from the outflow and also even in case of finish pouring posture, the outflow of the floating material is surely prevented in cooperation with the molten metal basin 13.

Description

Detailed Description of the Invention - No. 1 The present invention generally relates to a pouring ladle, and is particularly suitable for use in an automatic pouring device that automatically pours ladle into molds continuously made by a casting machine, for example. Regarding the pouring ladle to obtain.

[1-stand pouring ladle has conventionally existed with various cross-sectional shapes. The biggest drawback common to these pouring ladles with various cross-sectional shapes is that floating particles (hereinafter referred to as slag) are formed in the molten metal at the tap hole provided in the pouring ladle.
is to adhere to it. If the above-mentioned slag is left unattended, it will gradually progress as the work is repeated, such as receiving the metal from the blast furnace to the pouring ladle, and pouring the metal from the pouring ladle into the mold, etc., until finally. Therefore, in order to prevent the tap hole from being blocked by the adhesion of slag, it is necessary to remove the slag after pouring the metal from the blast furnace into the pouring ladle. Alternatively, it is necessary to remove slag during the pouring process from the pouring ladle to the mold or the like. By the way, such slag removal work has traditionally been done by workers, but as is well known, the working environment surrounding pouring ladle is extremely poor, especially when the temperature exceeds 1,300℃. In the case of iron casting, the above-mentioned work places a heavy burden on the worker. In view of these points, in recent years, so-called slag removal robots have been introduced into large equipment such as continuous pouring lines at major steel mills, and the dangerous slag removal work has become automated. However, in general manual ladles other than the large-scale equipment mentioned above, productivity is not as high as installing a slubbing robot.
Therefore, the introduction of such a slag removing robot is not realistic because it is immediately reflected in the cost of the product.

Therefore, in view of the above-mentioned contents, a pouring ladle was invented that allows unmanned slag removal work. Figure 1θ and Figure 12 show the structure of such a conventional pouring ladle.
A partition member 107 having a U-shaped cross section and having a length reaching near the bottom of the pouring ladle 105 is disposed along the inner circumferential surface of the front wall 103 of the pouring ladle 105. do,
The partition member 107 and the front wall 103 form a molten metal flow path 109 continuous with the tap hole 101 and having a cross-section shaped like an opening. When the pouring ladle 105 assumes the pouring position shown in FIG. The partition member 107 is intended to prevent slag in the molten metal from flowing out along with the molten metal through the molten metal wave path 109 toward the tap outlet 101. on the other hand,
The pouring ladle illustrated in FIG.
By arranging a regulating member 211 near the outlet 201 of the molten metal wave path 209 that communicates with the molten metal channel 209 at a substantially right angle to the axial direction of the molten metal flow path 209, the pouring ladle 2
When 05 takes the pouring position shown in Fig. 13,
The regulating member 211 is designed to prevent slag in the molten metal from flowing out to the tapping port 201 together with the molten metal.

I'm trying to get 1 Tansumu 1. The two types of proposals regarding the pouring ladle mentioned above are based on the fact that the slag in the molten metal, that is, the slag in the molten metal, has a lighter specific gravity than the molten metal. This method takes advantage of the fact that slag always floats to the surface of the molten metal.

By the way, even though the specific gravity of slag is lighter than the molten metal, it is difficult to completely prevent slag from adhering to the spout with the two types of pouring ladle structures mentioned above. . That is, in the pouring ladle 105 having the configuration shown in FIG. 10, when the pouring ladle 105 assumes the pouring posture as shown in FIG. 10
The molten metal whose remaining amount has decreased to near the bottom of the tap 5 will appear at the spout 101 with slag, and the slag will eventually adhere to the spout 101. Furthermore, the slag that remains and adheres in the molten metal flow path 109 without reaching the tap 101 floats to the surface of the molten metal that rises due to the pouring when the pouring ladle 105 receives the next metal, and adheres to the tap 101. Eventually, the tap hole 101 will be blocked, resulting in such a negative effect.

Moreover, on the other hand, a pouring ladle 20 having the configuration shown in FIG.
5, when the pouring ladle 205 assumes the pouring position as shown in FIG.
When the remaining amount of molten metal in the molten metal becomes small, the slag passes under the regulating member 211 and reaches the outlet 201,
Problems such as adhesion to the tap hole 201 occur. In both of the above-mentioned two types of pouring ladle, the slag in the pouring ladle 105 and 205 is located at the outlet 1.
Since it is not possible to completely prevent adhesion to 01 and 201, for example, if the width of the tap hole 101.201 is narrow, the tap hole will become clogged in a short period of time, causing serious problems during pouring work. This will cause trouble. These are the biggest obstacles to making pouring work unmanned by robots, etc., and if they become blocked and rotate, the danger will be enormous.

1-" The uninvented invention was invented to improve the problems and drawbacks of the conventional pouring ladle as described above, and its first purpose is to improve the final pouring ability of the pouring ladle. By completely preventing the floating matter in the molten metal from flowing out to the spout with the molten metal even when the molten metal is in a posture, we have developed a pouring ladle that eliminates the need to remove floating matter that adheres to the spout. In addition to the first purpose above, the second purpose is to provide a pouring ladle that can remove floating matter generated in the pouring ladle as needed without human intervention. The purpose is to provide hot water ladle.

The above object is achieved by the pouring ladle according to the present invention. To summarize, the first aspect of the present invention is that the pouring ladle is stored in the pouring ladle near the end of the front wall in the rotation direction of the pouring ladle, which is rotatably supported. A spout is formed that guides the molten metal to the outside when the molten metal is poured into the pouring position, and also prevents floating matter in the molten metal from flowing out to the spout when pouring the molten metal. In a pouring ladle equipped with a regulating member, a molten metal reservoir is formed in the vicinity of the tap opening on the front wall of the ladle, and a lower tip of the regulating member is arranged in a final pouring position of the pouring ladle. is located at a level lower than the level of the molten metal liquid level formed in the molten metal reservoir when the molten metal is removed, and cooperates with the molten metal reservoir to form a molten metal tapping passage, and when the outflow of the molten metal is completed. This pouring ladle is characterized in that floating matter in the molten metal is prevented from flowing out to the tap opening even during the step. Moreover, the second aspect of the present invention is
When the pouring ladle assumes a pouring position in which the molten metal stored in the pouring ladle is poured into the vicinity of the end of the front wall in the rotation direction of the pouring ladle which is rotatably supported. A pouring ladle is provided with a tap hole for guiding the molten metal to the outside, and a regulating member for preventing floating matter in the molten metal from flowing out to the tap hole during pouring. A molten metal reservoir is formed adjacent to the tap outlet on the front wall of the pot, and the regulating member is configured to:
It consists of a first regulating member and a second regulating member, and the lower tip of the first regulating member is connected to the molten metal liquid formed in the molten metal reservoir when the pouring ladle assumes the final pouring posture. It is located at a level lower than the level of the surface and forms a molten metal tapping passage in cooperation with the molten metal reservoir, and prevents suspended matter in the molten metal from flowing out to the tap outlet even when the molten metal has finished flowing out. The second regulating member is configured to prevent the first
The pouring ladle is characterized in that the pouring ladle is disposed inward of the pouring ladle from the regulating member, and cooperates with the first regulating member to form a sub-tap adjacent to the spout.

Actual example An embodiment of the present invention will be described below with reference to one drawing.

FIG. 1 shows the structure of a pouring ladle according to an embodiment of the present invention, and as is clear from FIG. Although the present invention is embodied in a fan-shaped ladle with a fan-shaped vertical cross-section and pours hot water at an angle, the scope of application of the present invention is not limited to the fan-shaped ladle described above, but can be applied to a fan-shaped ladle, for example, a cylindrical shape or a fan-shaped ladle. The pouring ladle according to an embodiment of the present invention is also applicable to a pouring ladle having a circular shape. a tap outlet 1; a molten metal reservoir or recess 13 provided near the tap r:tl of the front wall 3;
It consists of a regulating member, ie, a shielding plate 11, which faces the recessed portion 13. The above-described tap water outlet 1 has a semicircular shape as shown in FIG. 3 when viewed from the direction A in FIG. 1, and is connected to the recess 13 by a runner 15 as shown in FIG. ing. The height of the bottom of the runner 15 is set so that it can form the same plane as the inner circumferential surface of the front wall 3 with the recess 13 sandwiched therebetween. The recess 13 is
The section from the bottom of the recess 13 to the runner 15 side and the section from the bottom of the recess 13 to the inner peripheral surface of the front wall 3 are formed with gentle slopes, and the slopes of the two slopes are The angles are set to be approximately the same. The aforementioned shielding plate 11 is made of fireproof bricks such as graphite bricks, and one end thereof is assembled to the front wall 3 of the pouring ladle 5 as shown in FIG. is provided facing the recess 13. The end of the shielding plate 11 facing the recess 13, that is, the tip thereof, is formed at an angle so as to be substantially parallel to the bottom of the recess 13. The shielding plate 11
The extension of is the amount of molten metal to be formed in the recess 13 by the remaining amount of molten metal accumulated in the recess 13 when the pouring ladle 5 assumes the final pouring posture shown in FIG. The length is set so that the tip of the shielding plate 11 is reliably immersed in the surface level. In the shielding plate 11, the pouring ladle 5 is the 45th! When the pouring position shown in i is taken, only the molten metal flows out to the tap l through the recess 13 to prevent slag from flowing to the tap l, and the pouring ladle 5 When it takes the final pouring position shown in FIG. 5, the molten metal accumulated in the recess 13 and the
The function is to prevent slag from flowing out from the recess 13 to the sprue 1.

In the pouring ladle 5 configured as described above, when the pouring ladle is in the final pouring position shown in FIG. Slag is completely prevented from flowing out to the sprue 1.

Furthermore, when the pouring ladle returns to the posture shown in FIG. As the amount of hot water increases, it will gradually rise, but since the slag rises almost vertically at this time, it will not pass through the tip of the shielding plate 11 and emerge from the recess 13 at the tap outlet 1. Problems such as slag adhering to the spout 1, which is the case with conventional pouring ladle, do not occur.

Note that the aforementioned four parts 13 may be formed by making the outlet 1 higher than the outflow bottom, that is, the inner circumferential surface of the front wall 3, as shown in FIG.

FIG. 7 shows the structure of a pouring ladle according to another embodiment of the present invention.1 The outline of the pouring ladle according to another embodiment of the present invention can be clearly understood with reference to FIG. As such, in addition to the configuration shown in FIG. 1 described above, a second regulating member, that is, a shielding member 21 is further provided. The shielding member 21 is made of fireproof bricks such as graphite bricks and has a U-shaped cross section, and together with the shielding plate 11 described above, forms a sub-tap 23 with a mouth-shaped cross section.
On the other hand, its lower portion communicates with the molten metal reservoir, that is, the recess 13. The above-mentioned secondary tap 23 is used for so-called dumping, which is performed prior to the start of pouring as will be described later, or for the secondary tap 2.
In cases other than removing slag floating in the slag and pouring into molds, etc., the molten metal in the sub-outlet 23 is kept almost constant because it is kept isolated from the atmosphere at all times. The surface of the molten metal is not oxidized by the atmosphere and an oxide film is not formed, thus contributing to preventing quality deterioration of the casting. The second tap 23 and the first tap L, which has a half-moon shape when viewed in longitudinal section as shown in FIG. 3, are close to each other as shown in FIG. The second spout 23 has a rectangular shape as shown in FIG. The size is set to allow for a so-called dumping bath to be performed prior to the start of the bath. The distal end of the shielding member 21 has a U-shaped cross section along the inner peripheral surface of the front wall 3 of the pouring ladle 5 and has a length that reaches near the bottom of the pouring ladle 5. A guide member 19 is provided, and the guide member 19 and the inner peripheral surface of the front wall 3 direct the molten metal in the pouring ladle 5 to the tap outlet 1.
A molten metal guide path 9 having a mouth-shaped cross section and guiding toward the sub-thread outlet 23 is formed.

The reason for devising the pouring ladle with the above configuration is as follows. That is, basically, the pouring ladle having the configuration shown in FIG. These slags can also be generated by a chemical reaction with the refractory material lined on the inner circumferential surface of the pouring ladle 5, so these slags may cause disturbance of the molten metal caused by pouring into the pouring ladle 5 or during pouring. There is also a risk that it will be caught up in the molten metal, reach the tap l, and adhere to the tap 1u11. Furthermore, depending on the material of the above-mentioned refractory material, slag may gradually increase and adhere to the refractory material over a long period of time. Therefore, in view of this point, the above-mentioned sub-thread outlet 23 and the guide flow path 9 are formed, and the molten metal 70 generated while passing through the molten metal guide path 9 is transferred to the sub-thread outlet 23.
By floating the slag inside the sprue and removing it as needed, it is possible to completely prevent slag from appearing at the sprue l. When the pouring ladle 5 having the above-described structure is in the pouring position as shown in FIG. However, on the other hand, the slag generated in the molten metal guide path 9 or caught up when the molten metal flows into the molten metal guide path 9 has a light specific gravity, so it moves upward and enters the secondary outlet. He will be kept in detention at 23. Therefore, according to another embodiment of the present invention, all the slag mixed into the molten metal is retained in the sub-outlet 23, so that problems such as slag adhering to the outlet 1'lQl can be prevented. Since the molten metal does not come into contact with the atmosphere until it reaches the tap l, it is possible to prevent the formation of an oxide film on the surface of the molten metal and maintain good quality of the casting.

In this embodiment as well, the aforementioned four portions 13 may be formed by making the outlet 1 higher than the outflow bottom, that is, the inner circumferential surface of the front wall 3, as shown in FIG. No problem.

As explained above, according to the first aspect of the present invention, one end of the regulating member enters the molten metal reservoir formed in the vicinity of the outlet of the front wall, and The plunged tip of the regulating member reaches a level lower than the level of the molten metal liquid level formed in the molten metal reservoir when the pouring ladle assumes the final pouring position, and cooperates with the molten metal reservoir. A molten metal tapping passage is formed by forming a molten metal tap passage to prevent floating substances in the molten metal from flowing out to the tap hole when the molten metal pouring ladle assumes the pouring position. This completely prevents floating matter in the molten metal from flowing out to the spout along with the molten metal even when the pouring position is taken.
Therefore, it is possible to provide a pouring ladle that does not require the work of removing floating matter adhering to the tap. Further, according to a second aspect of the present invention, in addition to the first aspect of the present invention described above, a second restriction is provided which cooperates with the first restriction member to form a sub-tap adjacent to the tap. Since the member is arranged inward of the pouring ladle from the first regulating member, in addition to the above-mentioned effects, floating matter generated in the pouring ladle can be collected and removed by human labor after being kept for a certain period of time. It is possible to provide a pouring ladle that can be removed at any time by a simple robot or a dedicated machine as needed without intervention.

[Brief explanation of drawings]

FIG. 1 is a partial vertical sectional view showing the structure of a pouring ladle according to an embodiment of the present invention. FIG. 2 is a partial plan view showing a pouring ladle having the structure shown in FIG. 1. FIG. 3 is a partial front view of the tap in the pouring ladle having the structure shown in FIG. 1, viewed from the direction A in FIG. 1. FIG. 4 is a diagram showing a state in which the pouring ladle having the structure shown in FIG. 1 is in the pouring position during pouring work. FIG. 5 is a diagram showing the state when the pouring ladle having the structure shown in FIG. 1 assumes the final pouring position, and the pouring is completed. FIG. 6 is a partial longitudinal cross-sectional view of the pouring ladle having the structure shown in FIG. 1, with the tap opening higher than the inner circumferential surface of the front wall to form a molten metal reservoir. FIG. 7 is a partial vertical sectional view showing the structure of a pouring ladle according to another embodiment of the present invention. FIG. 8 is a partial plan view showing a pouring ladle having the structure shown in FIG. 6. FIG. 9 is a diagram showing a state in which the pouring ladle having the structure shown in FIG. 6 is in the pouring position during pouring work. FIG. 10 is a sectional view showing an example of the structure of a pouring ladle according to the prior art. FIG. 11 is a diagram showing a state in which the pouring ladle having the structure shown in FIG. 10 assumes a pouring attitude. FIG. 12 is a sectional view showing the structure of a pouring ladle different from the pouring ladle having the structure shown in FIG. 10. FIG. 13 is a diagram showing a state in which the pouring ladle having the structure shown in FIG. 12 assumes a pouring position. 1: Tap spout 3: Front wall 5: Pouring ladle 9: Molten metal guide path ll: Shielding plate (first regulating member) 13: Molten metal reservoir (recess) 19: Guide member 21: Shielding member 23: Sub-tap Figure 1 Figure 2 Figure 3 Figure 12 Figure 13

Claims (1)

[Scope of Claims] 1) The pouring ladle pours the molten metal stored in the pouring ladle near the end of the front wall in the direction of rotation of the pouring ladle, which is rotatably supported. A spout is formed to guide the molten metal to the outside when the molten metal is in a pouring position, and a regulating member is provided to prevent floating matter in the molten metal from flowing out to the spout when pouring the molten metal. In the pouring ladle, a molten metal reservoir is formed in the vicinity of the tap outlet on the front wall of the ladle, and the lower tip of the regulating member is arranged such that when the pouring ladle assumes the final pouring position, It is located at a level lower than the level of the molten metal liquid level formed in the molten metal reservoir, and forms a molten metal tapping passage in cooperation with the molten metal reservoir, so that even when the molten metal has finished flowing out, the molten metal remains in the molten metal. A pouring ladle characterized in that floating matter is prevented from flowing out to a spout. 2) The regulating member is made of a fireproof material,
2. The pouring ladle according to claim 1, wherein the molten metal reservoir has a concave cross section. 3) The regulating member is made of a fireproof material,
3. The pouring ladle according to claim 1, wherein the molten metal reservoir is formed by making the tap outlet higher than the outflow bottom. 4) The pouring ladle has a pouring position in which the molten metal stored in the pouring ladle is poured into the vicinity of the front wall end in the rotation direction of the rotatably supported pouring ladle. In a pouring ladle, the ladle is formed with a tap that guides the molten metal to the outside when the molten metal is poured, and is provided with a regulating member that prevents suspended matter in the molten metal from flowing out to the tap when pouring the molten metal. , a molten metal reservoir is formed adjacent to the tap opening on the front wall of the ladle, and the regulating member includes a first regulating member and a second regulating member;
The lower tip of the regulating member is located at a level lower than the level of the molten metal liquid level formed in the molten metal reservoir when the pouring ladle assumes the final pouring position, and The second regulating member is configured to work together to form a molten metal tapping passage and to prevent floating objects in the molten metal from flowing out to the tap opening even after the molten metal has finished flowing out; disposed inward of the pouring ladle from the first regulating member;
A pouring ladle characterized in that a secondary tap is formed adjacent to the tap in cooperation with a regulating member. 5) The pouring metal according to claim 4, wherein the first regulating member is made of a refractory material, and the molten metal reservoir has a recessed cross section. Ladle. 6) The first regulating member is made of a refractory material, and the molten metal reservoir is formed by making the outlet higher than the outflow bottom. The pouring ladle according to item 4 or 5. 7) The pouring drawer according to any one of claims 4 to 6, characterized in that the auxiliary tap is disposed adjacent to the first tap. pot. 8) The second regulating member has a guide member formed along the direction of the pouring ladle, and forms a molten metal guide path communicating with the molten metal tapping passage and the sub-tapping port. A pouring ladle according to any one of claims 4 to 7.