JPH05260U - Ladle for casting - Google Patents

Abstract

(57) [Summary] [Purpose] Providing a casting ladle that prevents the outflow of dust floating on the surface of the molten metal [Structure] Applicable to the outlet of a stationary earthenware ladle or a triangular earthenware ladle By placing a plate-like weir in the vertical direction with its lower end having a gap with the bottom of the ladle as close as possible,
It is divided into chambers and is provided with an inert gas blowing means at the bottom of the main chamber on the side opposite to the outlet, and further directed toward the main chamber at the lower end of the weir provided in the triangular ladle. It is formed by forming a puddle in the shape of a "ku".

Description

[Detailed description of the device]

[0001]

[Industrial applications]

  The present invention relates to a ladle for casting in which dust floating on the surface of molten metal is prevented from flowing out.

[0002]

[Prior art]

  Fig. 4 shows a well-known earthenware-type stationary ladle 1 with a molten metal outlet 2 at the upper opening edge. Has been used since ancient times. For example, the molten metal discharged from the furnace is It is housed in the hot water ladle and then transferred to the stationary ladle. Move the stationary ladle 1 to the triangular ladle 5 and insert it through the trough to mold for centrifugal force casting. Is cast into.

[0003]

[Problems to be solved by the device]

  As shown in Fig. 4, the surface of the molten metal 3 was mixed with dust (oxide, sulfide) from the hot water ladle. Etc.) and dust 4 generated in the stationary ladle 1 floats on the surface of the bath. This dirt 4 is shown in Figure 5. As shown, the flow of ladle 1 is normally tilted by an operator so that it does not enter triangular ladle 5. Gently slide from exit 2 along the surface of the water and push from the front to the front to prevent dirt 4 from entering. However, there is a problem that this work is manually required. If the scratching operation is not enough, it will get caught in the molten metal and Will be lowered. On the other hand, the molten metal 3 in the stationary ladle 1 contains non-metallic inclusions. In many cases, there is a problem in the quality of the cast product.

[0004]   In addition, in the conventional example shown in FIGS. 4 and 5, the stationary ladle 1 and the triangular ladle 5 are When using as a set, in addition to the above problems, two types of ladle are used. There is also a problem that the operation of casting work requires two strokes and is not labor-saving.   Furthermore, in the conventional triangular ladle 5 shown in FIGS. 6 (a) and 6 (b), the molten metal 3 table shown in FIG. As shown in Fig. 7 (b), the dust 4 on the surface flows out during pouring, so Fig. 7 (a) (b) (c ), As close to the outlet 2 as possible, its lower end has a gap with the bottom of the ladle. It is possible to install a plate-like weir 6 in the downward direction. However, it is shown in Figure (b). It is possible to prevent the outflow of dross 4 by making sure that the molten metal is left, but as shown in (c) of the figure, There was a drawback that if the amount of hot water was low, the dregs 4 would also flow out.

[0005]   The invention of claim 1 is to transfer the molten metal to another ladle etc. Eating, the dust floating on the surface of the molten metal does not flow out as much as possible, and the molten metal in the ladle is reformed. For the purpose of also   The present invention according to claim 2 has a function of a stationary ladle in an earthen bottle type triangular ladle. When the molten metal is allowed to flow into the trough, etc., the dust floating on the surface of the molten metal will flow out as much as possible. Without aiming for the purpose of reforming the molten metal in the ladle,   According to the present invention of claim 3, in a clay bottle type triangular ladle, the molten metal is allowed to flow out to a trough or the like. It is important to prevent spillage even if there is no dirt or residual hot water floating on the surface of the molten metal. It is a target.

[0006]

[Means for Solving the Problems]

  The present invention employs the following means in order to achieve the above object.   A first invention is an earthen bottle type stationary ladle having an outlet on the periphery of the opening. As close as possible to the outlet, its lower end has a gap with the bottom of the ladle, and is a plate-like weir in the vertical direction. It is divided into two chambers, a main chamber and a sub chamber, and is installed at the bottom of the main chamber on the side opposite to the outlet. The point is that an active gas blowing means is provided.

[0007]   A second invention is an earthenware-type triangular ladle provided with an outlet on the periphery of the opening. As close as possible to the outlet, its lower end has a gap with the bottom of the ladle, and is a plate-like weir in the vertical direction. Is divided into two chambers, a main chamber and a sub chamber, and is provided at the bottom of the main chamber on the side opposite to the outlet. The point of providing an inert gas blowing means at a position as close as possible to the lower end of the cough. It is in.

[0008]   A third invention is an earthen bottle type triangular ladle provided with an outlet on the periphery of the opening. As close as possible to the outlet, its lower end has a gap with the bottom of the ladle, and is a plate-like weir in the vertical direction. Is divided into two main and sub chambers, and the lower end of the cough is opposite to the outlet. The point is that the puddle was formed by bending it toward the bottom of the main room.

[0009]

[Action]

In Fig. 1, when N ₂ gas was blown into the molten metal 3 from the porous plug 11a provided at the bottom of the main chamber 9 of the stationary ladle 1, this gas became bubbles and floated up, but the suspended impurities in the molten metal (Non-metallic inclusions) adhere to air bubbles and are forced to float and separate, and float as dust 4 on the surface of the molten metal 3. Since the upper part of the main chamber 9 is closed by the lid 12, the bath surface and the space of the lid 12 are filled with the N ₂ gas atmosphere, the molten metal 3 does not react with O ₂ and is oxidized, and dust 4 is generated. Was prevented. Thus, the ladle 1 is tilted and the molten metal 3 in the ladle 1 is moved from the outlet 2 to the next triangular ladle 5, for example, but since the cough 6 is provided, the molten metal in the main chamber 9 is removed. No. 4 does not flow into the sub-chamber 10 due to the weir 6, and therefore no molten metal containing dust 4 flows out from the outlet 2.

In FIG. 2, the molten metal is directly put into the triangular ladle 20 without using the stationary ladle normally used, and then the molten metal 3 is poured from the porous plug 11a provided at the bottom of the ladle 20. By blowing N ₂ gas into the chamber, the same operation as in FIG. 1 is performed. In Fig. 3 (a), when the molten metal 3 is put into the triangular ladle 30 from the stationary ladle 1 as shown in Fig. 4, and then the ladle 30 is gradually tilted in order to pour the molten metal into the next trough or the like, As shown in Fig. 3 (b), the dust 4 floating on the surface of the bath in Fig. 3 (a) finally accumulates in the dust pool 6a provided at the lower end of the cough 6 to prevent the residual hot water from flowing out. became.

[0011]

【Example】

FIG. 1 is a sectional view of the earthenware type stationary ladle of the present invention, in which 1 is the same ladle and 2 is an outlet 2 provided at the periphery of the opening. 6 is a weir made of graphite, for example, and the weir 6 is a plate-like one that is vertically provided with the bottom end 7 of the ladle 1 and a gap 8 as close as possible to the outlet 2. The cough 6 divides the inside of the ladle 1 into a main chamber 9 located on the opposite side of the outflow port 2 and a sub chamber 10 on the same side as the outflow port 2. Reference numeral 11 denotes an inert gas blowing means provided at the bottom of the main chamber 9. Specifically, as shown in the same figure, the upper surface of the porous plug 11a is exposed inside the ladle 1 and the lower surface is connected to the pipe 11b to form a porous membrane. An inert gas such as N ₂ gas is blown into the molten metal 3 through the plug 11a. The inert gas blowing means 11 is not limited to the illustrated one. 12 is a lid provided on the upper part of the main chamber 9.

[0012]   FIG. 2 shows a sectional view of the earthenware-type triangular ladle 20 of the present invention when the pouring is inclined. This triangular ladle 20 of the present invention is one of the conventional fixed ladle 1 and triangular ladle 5 shown in FIG. The triangular ladle 20 that has the function of a stationary ladle is put together in Figure 2. The same reference numerals as those in FIG. 1 indicate the same parts. However, the shape of the ladle is triangular. The inert gas blowing means 11 is provided at the bottom of the main chamber 9 as close as possible to the lower end of the weir 6. There is. In the figure, 21 is the molten metal poured from the triangular ladle 20 to a centrifugal mold or the like. It is a trough for supplying.

[0013]   Fig. 3 shows another example of the earthenware-type triangular ladle 30 of the present invention. Fig. 3 (a) shows the normal position. (b) is a cross-sectional view showing the approximate final tilt position of pouring at the tilt position. The same reference numerals as in FIG. 2 indicate the same parts. However, cough 6 has the lower end opposite outlet 2. It is bent toward the main chamber 9 on the side to form a dimple 6a. In addition, The weir 6 having the dross deposit 6a shown in FIG. 3 may be adopted as the weir 6 in FIG.

[0014]

[Effect of device]

  According to the invention of claim 1, the gas is blown from the inert gas blowing means 11. , The molten metal can be reformed, and by installing a cough 6, the dirt mixed in from the hot water ladle And, it was possible to prevent the dust generated in the stationary ladle 1 from being mixed into the next triangular ladle and the like.   According to the invention of claim 2, the triangular ladle is also used as the stationary ladle. Thus, labor saving is achieved and the same effect as that of the first aspect is achieved.

[0015]   According to the invention of claim 3, there is no residual hot water due to the hot water pool provided at the lower end of the cough. It has become possible to prevent the outflow of dirt.

[Brief description of drawings]

FIG. 1 is a sectional view of a stationary earthenware ladle of the present invention.

FIG. 2 is a cross-sectional view of the triangle-type ladle of the present invention when the pouring is inclined.

FIG. 3 is a sectional view of the earthenware-type triangular ladle of the present invention.
(a) shows the normal position, and (b) shows the final tilt position.

FIG. 4 is a cross-sectional view of a conventional earthen pot type stationary ladle.

FIG. 5 is a cross-sectional view when a molten metal is supplied from a conventional earthenware-type stationary ladle to a triangular ladle.

FIG. 6 is a sectional view of a conventional triangular ladle, where FIG. 6 (a) is a normal position and FIG. 6 (b) is a sectional view when tilted.

FIG. 7 is a cross-sectional view of a conventional triangular ladle provided with a weir, in which the figure (a) shows the normal position and the figure (b) shows the intermediate tilt position.
FIG. 7C is a sectional view showing a substantially final tilt position.

[Explanation of symbols]

1 Stationary ladle 2 Outlet 3 molten metal 4 dirt 6 cough 6a Dust accumulation 7 bottom 8 Gap 9 Main room 10 Sub-chamber 11 Inert gas blowing means 12 lid 20 triangular ladle 30 triangular ladle

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Creator Takahiro Tanaka             2-26 Ohama-cho, Amagasaki City, Hyogo Stock Association             Kubota Mukogawa Factory

Claims (3)

[Scope of utility model registration request] 1. A pot-type stationary ladle having an outlet on the periphery of the opening, which is plate-like in the vertical direction with the lower end thereof having a gap with the bottom of the ladle as close as possible to the outlet. A casting ladle characterized in that it is divided into two main and sub chambers by providing a weir, and an inert gas blowing means is provided at the bottom of the main chamber opposite to the outlet. 2. An earthen bottle type triangular ladle provided with an outlet on the periphery of the opening, which has a plate-like shape in the vertical direction with the lower end thereof having a gap with the bottom of the ladle as close as possible to the outlet. By providing a weir, it is divided into two chambers, a main chamber and an auxiliary chamber, and an inert gas blowing means is provided at a position at the bottom of the main chamber on the side opposite to the outlet and as close as possible to the lower end of the weir. A ladle for casting characterized by being provided. 3. An earthen bottle type triangular ladle provided with an outlet on the periphery of the opening, which has a plate-like shape in the vertical direction with the lower end thereof having a gap with the bottom of the ladle as close as possible to the outlet. It is characterized in that it is divided into two chambers, a main chamber and a sub chamber, by providing a weir, and the lower end of the weir is directed toward the bottom of the main chamber on the side opposite to the outlet, and is bent to form a dust reservoir. Ladle for casting.