TWI868563B - Spheroidizing device - Google Patents

Abstract

A spheroidizing device includes a ladle, a cover group and a lifting mechanism. The ladle has an opening. The cover group is detachably connected to the ladle and includes a cover, a tundish and a tapping hole. The cover is detachably connected to the ladle and used to cover the opening. The tundish is connected to the cover and used to receive a casting solution. The tapping hole runs through the cover and the tundish and is used for a passage of the casting solution. The lifting mechanism links the cover group to control the opening and closing of the opening of the ladle. Therefore, the direct impact of the casting solution on a nodulant can be avoided. Further, the flow direction, velocity and pressure of the casting solution can be precisely controlled, and the efficiency and quality of spheroidization can be improved.

Description

Spheroidizing device

The present invention provides a spheroidizing device, in particular a spheroidizing device capable of controlling casting melt.

In current iron casting technology, during the spheroidization step, a large amount of dust and fume are generated when the molten iron comes into contact with the spheroidizing agent, which easily causes air pollution. Furthermore, with the occurrence of intense chemical reactions, the high-temperature molten iron splashes out of the container, increasing the danger of the working environment.

In addition, with current technology, during the spheroidization reaction, molten iron is poured into a container and directly impacts the spheroidizing agent in the container. However, this method cannot effectively and accurately control the molten iron casting time, speed, batch casting amount, and other important factors affecting the quality of ductile iron, resulting in problems such as low contact rate, low magnesium dissolution rate, incomplete reaction, and unstable spheroidization effect.

In view of this, how to improve the above shortcomings and enhance the stability of the spheroidization effect has become a topic worthy of study for relevant industries.

The present invention provides a spheroidizing device, which can accurately control the flow direction, flow rate and pressure of the casting molten liquid through the special structural configuration of the cover body and the feeding trough of the upper cover assembly, thereby making the flow of the casting molten liquid more stable and accurate, and helping to improve the efficiency and quality of the spheroidizing treatment.

One embodiment of the present invention provides a spheroidizing device, comprising a barrel, an upper cover assembly and a lifting mechanism. The barrel has an opening, and the upper cover assembly can be detachably connected to the barrel and comprises a cover body, a feeding trough and an outflow hole. The cover body can be detachably connected to the barrel and is used to cover the opening. The feeding trough is connected to the cover body and is used to receive a casting melt. The outflow hole penetrates the cover body and the feeding trough for the casting melt to pass through. The lifting mechanism links the upper cover assembly to control the opening and closing of the barrel. The diameter of the outlet hole is D, the weight of the casting melt is W, the time for the casting melt to pass through the outlet hole is t, the height of the casting melt in the feeding trough is H, and the aperture calculation coefficient is A, which meets the following conditions: D = A ; and 0.16 ＜ A ＜ 0.38.

According to the spheroidizing device of the aforementioned embodiment, the aperture calculation coefficient is A, which can meet the following condition: 0.22 < A < 0.32.

According to the spheroidizing device of the above-mentioned embodiment, the width of the feeding trough is L1, and the length of the feeding trough is L2, which can meet the following conditions: 0.4 < L1/L2 < 0.6.

According to the spheroidizing device of the aforementioned embodiment, the feeding trough of the upper cover assembly may have a preheating temperature before receiving the casting molten liquid, and the preheating temperature may be 200°C to 300°C.

According to the spheroidizing device of the aforementioned embodiment, the feeding trough of the upper cover assembly may include a cover protruding from one end of a body of the feeding trough.

According to the spheroidizing device of the above-mentioned embodiment, the feeding trough of the upper cover assembly may have a guide portion, which is arranged at one end of a body of the feeding trough, and the guide portion is inclined from the one end of the body toward the outflow hole.

According to the spheroidizing device of the above embodiment, the barrel may include a spheroidizing agent placement area and a receiving area. The spheroidizing agent placement area is used to place a spheroidizing agent, the position of the outflow hole corresponds to the position of the receiving area, and the casting molten liquid passes through the outflow hole and falls into the receiving area.

According to the spheroidizing device of the above-mentioned embodiment, the container may include a barrier disposed between the spheroidizing agent placement area and the receiving area.

According to the spheroidizing device of the above-mentioned embodiment, the lifting mechanism may include a fixed bracket and a movable bracket. The fixed bracket is connected to the bucket, and the movable bracket is connected to the upper cover assembly and movably connected to the fixed bracket. The movable bracket links the upper cover assembly to move along the fixed bracket.

According to the spheroidizing device of the above-mentioned embodiment, the lifting mechanism may further include a positioning assembly. The positioning assembly is connected to the fixed bracket and the movable bracket, and the positioning assembly includes at least two positioning holes, a block and a positioning member. The at least two positioning holes are connected to the fixed bracket. The block is connected to the movable bracket, and the block can be selectively connected to one of the at least two positioning holes. The positioning member can be detachably connected to the block and the at least two positioning holes.

The following will describe several embodiments of the present invention with reference to the drawings. For the sake of clarity, many practical details will be described together in the following description. However, it should be understood that these practical details should not be used to limit the present invention. That is to say, in some embodiments of the present invention, these practical details are not necessary. In addition, in order to simplify the drawings, some commonly known structures and components will be depicted in the drawings in a simple schematic manner; and repeated components may be represented by the same number.

Please refer to Figures 1, 2 and 3. Figure 1 is a three-dimensional schematic diagram of a spheroidizing device 100 according to one embodiment of an embodiment of the present invention. Figure 2 is a three-dimensional schematic diagram of the spheroidizing device 100 in another state according to the embodiment of Figure 1. Figure 3 is a cross-sectional schematic diagram of the spheroidizing device 100 along the 3-3 section line according to the embodiment of Figure 1.

As shown in FIGS. 1 to 3 , the spheroidizing device 100 includes a barrel 110, an upper cover assembly 120, and a lifting mechanism 130. The barrel 110 has an opening 111. The upper cover assembly 120 is detachably connected to the barrel 110 and used to cover the opening 111. The lifting mechanism 130 links the upper cover assembly 120 to control the opening and closing of the opening 111 of the barrel 110. The upper cover assembly 120 includes a cover body 121, a feeding trough 122, and an outflow hole 123. The cover body 121 is detachably connected to the barrel 110 and covers the opening 111. The feeding trough 122 is connected to the cover body 121 and is used to receive a casting melt. The outflow hole 123 penetrates the cover 121 and the feeding trough 122 and is used for the casting molten metal to pass through and enter the ladle 110 .

By means of the above-mentioned structural configuration, when the spheroidizing process is being carried out, the feeding trough 122 of the upper cover assembly 120 can accurately control the flow direction of the casting melt, and can prevent the casting melt from directly impacting the spheroidizing agent stored in the barrel 110, and can solve the problems of low contact rate of the spheroidizing agent, low dissolution rate of magnesium, incomplete reaction and unstable spheroidizing effect, thereby effectively improving the efficiency and quality of the spheroidizing process. In addition, when the spheroidizing reaction is being carried out, the opening 111 of the barrel 110 is covered and sealed by the cover body 121 of the upper cover assembly 120, thereby preventing a large amount of dust and fume splashing, making the spheroidizing process more convenient and safe.

Specifically, as shown in FIG. 3 , the diameter of the outlet hole 123 is D, the weight of the molten metal is W, the time for the molten metal to pass through the outlet hole 123 is t, the height of the molten metal in the feeding trough 122 is H, and the diameter calculation coefficient is A, which satisfies the following conditions: D = A ; and 0.16 ＜ A ＜ 0.38. Further, the aperture calculation coefficient A can satisfy the following condition: 0.22 ＜ A ＜ 0.32.

Specifically, the above parameters refer to the state of processing a single batch of casting melt, and the casting melt is in a stable state. When the aperture D of the outflow hole 123 and the aperture calculation coefficient meet the above conditions, the flow of the casting melt can be maintained at a certain flow rate and pressure, thereby making the flow of the casting melt more stable and accurate, and can help improve the efficiency and quality of the spheroidization process.

Furthermore, as shown in FIG. 3 , the width of the feeding trough 122 is L1, and the length of the feeding trough 122 is L2, which satisfies the following condition: 0.4 < L1/L2 < 0.6. When the aspect ratio of the feeding trough 122 meets the above condition, the flow speed of the casting molten metal and the pressure of the casting molten metal when it flows into the ladle 110 can be accurately controlled.

Specifically, the feeding trough 122 of the upper cover assembly 120 may have a preheating temperature before receiving the molten casting liquid, and the preheating temperature may be 200° C. to 300° C. Specifically, before pouring the molten casting liquid into the feeding trough 122, the feeding trough 122 may be heated to the preheating temperature, thereby reducing the temperature drop of the molten casting liquid to ensure the effect of the spheroidization reaction.

Please refer to FIG. 4 and FIG. 1 together. FIG. 4 is a schematic cross-sectional view of the spheroidizing device 100 according to the embodiment of FIG. 3 along the 4-4 section line. As shown in FIG. 1 and FIG. 4, the feeding trough 122 of the upper cover assembly 120 may have a guide portion 125, which is disposed at one end of a body 124 of the feeding trough 122, and the guide portion 125 is inclined from the end of the body 124 toward the outflow hole 123. Thus, the provision of the guide portion 125 can help increase the smoothness of the flow of the casting molten metal in the feeding trough 122, and the guide portion 125 can guide the casting molten metal to flow toward the outflow hole 123, so that it can smoothly enter the ladle 110. The guide portion 125 may be inclined at an angle of 35 to 55 degrees, thereby accurately controlling the casting molten metal to enter the outlet hole 123 at an appropriate speed.

On the other hand, as shown in FIG. 4 , the barrel 110 includes a spheroidizing agent placement area 112 and a receiving area 113. Specifically, the spheroidizing agent placement area 112 is used to place a spheroidizing agent (not shown), and the receiving area 113 is used to receive the casting melt. In particular, the position of the outflow hole 123 corresponds to the position of the receiving area 113, and accordingly, the casting melt is guided and restricted by the outflow hole 123, and after the casting melt passes through the outflow hole 123, it will directly fall into the receiving area 113. In this way, the casting melt will not directly impact the spheroidizing agent, thereby avoiding the occurrence of uneven contact between the casting melt and the spheroidizing agent, incomplete spheroidization reaction, etc.

The barrel 110 may further include a barrier 114 disposed between the spheroidizing agent placement area 112 and the receiving area 113. The barrier 114 is connected to the bottom of the barrel 110 to separate the spheroidizing agent placement area 112 from the receiving area 113. Specifically, the molten casting is guided by the outflow hole 123, and the molten casting falls to the receiving area 113 and first accumulates in the receiving area 113. When the molten casting exceeds the height of the barrier 114, the molten casting will slowly and steadily enter the spheroidizing agent placement area 112, so that the molten casting gradually contacts the spheroidizing agent to perform a spheroidizing reaction. Thereby, the stability and integrity of the spheroidization reaction can be increased, thereby effectively improving the quality of the spheroidization process.

Please refer to FIG. 1 and FIG. 2 , the lifting mechanism 130 can be linked to the upper cover assembly 120 to control the opening and closing of the opening 111 of the bucket 110. Specifically, the lifting mechanism 130 includes a fixed bracket 131 and a movable bracket 132. The fixed bracket 131 is connected to the bucket 110, and the movable bracket 132 is connected to the upper cover assembly 120 and movably connected to the fixed bracket 131. The movable bracket 132 links the upper cover assembly 120 to move along the fixed bracket 131. The movable bracket 132 can include a lifting ring 133, which can be used to connect to a crane (not shown), and accordingly, the lifting ring 133 can be pulled by the crane to link the movable bracket 132 to lift the upper cover assembly 120 and open the opening 111 of the bucket 110. This helps to apply the spheroidizing device 100 to a fully automated production line.

The lifting mechanism 130 further includes a positioning assembly 140, which is connected to the fixed bracket 131 and the movable bracket 132, and includes at least two positioning holes 141, a block 142, and a positioning member 143. In the embodiment of FIG. 1, the number of the positioning holes 141 is four, and the positioning holes 141 are arranged in pairs to form two positioning positions at different heights, but the present invention is not limited to this disclosure. The positioning hole 141 is connected to the fixed bracket 131, the block 142 is connected to the movable bracket 132, and the block 142 can be selectively connected to one of the positioning holes 141. The positioning member 143 can be detachably connected to the block 142 and the positioning hole 141, and the positioning member 143 is used to limit the movable bracket 132 to the fixed bracket 131.

Specifically, as shown in FIG. 1 , when pouring the casting molten metal into the feeding trough 122 and the bucket 110 , the block 142 and the positioning member 143 are connected to the low positioning hole 141 to limit the movement of the movable bracket 132 so that the cover 121 can stably close the opening 111 of the bucket 110 . As shown in FIG. 2 , when the soup dispensing operation is to be performed, the positioning member 143 is removed to release the limit, and then the lifting ring 133 is pulled by the overhead crane to link the movable bracket 132 to lift the upper cover assembly 120, and then the baffle 142 is aligned with the high positioning hole 141, and the positioning member 143 is inserted into the high positioning hole 141 and the baffle 142 to limit the movement of the movable bracket 132, thereby making the opening 111 of the bucket 110 stably open, and then the soup dispensing operation can be performed smoothly.

Please refer to FIG. 5 and FIG. 6. FIG. 5 is a three-dimensional schematic diagram of a spheroidizing device 200 according to another embodiment of an embodiment of the present invention, and FIG. 6 is a cross-sectional schematic diagram of the spheroidizing device 200 according to the embodiment of FIG. 5. The spheroidizing device 200 includes a barrel 210, an upper cover assembly 220, and a lifting mechanism 230. The structures of the barrel 210 and the lifting mechanism 230 of the spheroidizing device 200 in FIG. 6 are similar to the structures of the barrel 110 and the lifting mechanism 130 of the spheroidizing device 100 in FIG. 1, so the similarities are not further described here.

In particular, the upper cover assembly 220 of the spheroidizing device 200 may further include a cover 226, which protrudes from one end of a body 224 of the feeding trough 222. As shown in FIG. 6, in the spheroidizing device 200 of the embodiment of FIG. 5, the cover 226, the feeding trough 222 and the cover body 221 are an integrally formed structure.

Specifically, the position of the cover 226 corresponds to the position of the outflow hole 223. The cover 226 covers the outflow hole 223 in an axial direction. In addition, the cover 226 protrudes upward from the body 224 of the feeding trough 222, so that a portion of the feeding trough 222 is covered on at least four sides. Thus, if some high-temperature substances such as smoke, scorch, and magnesium light are sprayed out from the outflow hole 223, the cover 226 can effectively block the high-temperature substances and prevent them from being directly sprayed into the working environment. Accordingly, the provision of the cover 226 can help improve the safety of the working environment, making the use of the spheroidizing device 200 safer and more convenient, thereby improving the efficiency of the spheroidizing operation.

In summary, the spheroidizing device of the present invention has the following advantages: First, the flow direction of the casting molten liquid can be accurately controlled by the structural configuration of the cover body of the upper cover assembly and the feeding trough, which can prevent the casting molten liquid from directly impacting the spheroidizing agent stored in the barrel, and can solve the problems of low contact rate of the spheroidizing agent, low dissolution rate of magnesium, incomplete reaction and unstable spheroidizing effect; Second, when the spheroidizing reaction is carried out, the opening of the barrel is covered and closed by the cover body of the upper cover assembly, thereby avoiding a large amount of dust and The invention can reduce splashing, making the spheroidizing process more convenient and safer; thirdly, when the pore size of the outflow hole and the pore size calculation coefficient meet specific conditions, the flow of the casting molten liquid can be maintained at a certain flow rate and pressure, thereby making the flow of the casting molten liquid more stable and accurate, and helping to improve the efficiency and quality of the spheroidizing process; fourthly, through the structural configuration of the lifting mechanism, it can help to apply the spheroidizing device of the present invention to a fully automated production line to improve the overall efficiency of the spheroidizing process.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention. Anyone skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the scope defined in the attached patent application.

100,200: spheroidizing device 110,210: container 111: opening 112: spheroidizing agent placement area 113: receiving area 114: barrier 120,220: upper cover assembly 121,221: cover body 122,222: feeding trough 123,223: outflow hole 124,224: body 125: guide part 130,230: lifting mechanism 131: fixed bracket 132: movable bracket 133: lifting ring 140: positioning assembly 141: positioning hole 142: block 143: positioning piece 226: cover D: hole diameter L1: width L2: Length

In order to make the above and other purposes, features, advantages and embodiments of the present invention more clearly understandable, the attached drawings are described as follows: FIG. 1 is a three-dimensional schematic diagram of a spheroidizing device of one embodiment of an embodiment of the present invention; FIG. 2 is a three-dimensional schematic diagram of another state of the spheroidizing device according to the embodiment of FIG. 1; FIG. 3 is a cross-sectional schematic diagram of the spheroidizing device along the 3-3 section line according to the embodiment of FIG. 1; FIG. 4 is a cross-sectional schematic diagram of the spheroidizing device along the 4-4 section line according to the embodiment of FIG. 3; FIG. 5 is a three-dimensional schematic diagram of a spheroidizing device of another embodiment of an embodiment of the present invention; and FIG. 6 is a cross-sectional schematic diagram of the spheroidizing device according to the embodiment of FIG. 5.

100: Spheroidizing device

110: Bucket

111: Open your mouth

112: Spheroidizing agent placement area

114: Barrier

120: Upper cover assembly

121: Cover

122: Feeding Trough

123: Outflow hole

125: Guidance Department

130: Lifting mechanism

131:Fixed bracket

132: Mobile bracket

133: Rings

140: Positioning assembly

141: Positioning hole

142:Block

143: Positioning piece

Claims (10)

A spheroidizing device comprises: a barrel having an opening; an upper cover assembly detachably connected to the barrel and comprising: a cover body detachably connected to the barrel and used to cover the opening; a feeding trough connected to the cover body and used to receive a casting molten liquid; and an outflow hole penetrating the cover body and the feeding trough for the casting molten liquid to pass through; and a lifting mechanism linked to the upper cover assembly to control the opening of the barrel; Where the pore size of the outlet hole is D, the weight of the casting melt is W, the time for the casting melt to pass through the outlet hole is t, the height of the casting melt in the feeding trough is H, and the pore size calculation coefficient is A, which satisfies the following conditions: D = A ; and 0.16 ＜ A ＜ 0.38. The spheroidizing device as described in claim 1, wherein the aperture calculation coefficient is A, which satisfies the following conditions: 0.22 ＜ A ＜ 0.32. The spheroidizing device as described in claim 1, wherein the width of the feeding trough is L1, and the length of the feeding trough is L2, which satisfies the following conditions: 0.4 ＜ L1/L2 ＜ 0.6. The spheroidizing device as described in claim 1, wherein the feeding trough of the upper cover assembly has a preheating temperature before receiving the casting molten liquid, and the preheating temperature is 200°C to 300°C. A spheroidizing device as described in claim 1, wherein the feeding trough of the upper cover assembly includes a cover protruding from one end of a main body of the feeding trough. The spheroidizing device as described in claim 1, wherein the feeding trough of the upper cover assembly has a guide portion, which is arranged at one end of a body of the feeding trough, and the guide portion is inclined from the end of the body toward the outflow hole. The spheroidizing device as described in claim 1, wherein the container comprises: a spheroidizing agent placement area for placing a spheroidizing agent; and a receiving area, the position of the outflow hole corresponds to the position of the receiving area, and the casting melt passes through the outflow hole and falls into the receiving area. The spheroidizing device as described in claim 7, wherein the barrel includes a barrier disposed between the spheroidizing agent placement area and the receiving area. The spheroidizing device as described in claim 1, wherein the lifting mechanism comprises: a fixed bracket connected to the bucket; and a movable bracket connected to the upper cover assembly and movably connected to the fixed bracket, the movable bracket links the upper cover assembly to move along the fixed bracket. The spheroidizing device as described in claim 9, wherein the lifting mechanism further comprises a positioning assembly, the positioning assembly is connected to the fixed bracket and the movable bracket, and the positioning assembly comprises: At least two positioning holes connected to the fixed bracket; A block connected to the movable bracket, the block can be selectively connected to one of the at least two positioning holes; and A positioning member, the positioning member can be detachably connected to the block and the at least two positioning holes.