Riser structure based on high-toughness wear-resistant modified high manganese steel

Abstract

The utility model discloses a riser structure based on high-toughness wear-resistant modified high manganese steel, which comprises a riser body, a vertical riser cavity is arranged in the riser body, a molten steel adding channel communicated with the riser cavity is arranged on the side wall of the riser body, and a pressure compensation structure for vertically pressing molten steel in the riser cavity downwards is arranged in the riser cavity. By arranging the pressurizing device, the molten steel can be moderately pressurized when the molten steel is compensated, the supplementing efficiency of the molten steel is improved, the molten steel can be supplemented in time, and the step that the molten steel needs to be additionally heated due to too long supplementing time is avoided; and in addition, effective feeding can be realized at a lower metal liquid level, and the injection amount of molten steel is reduced, so that the residual quantity of the molten steel is reduced, and the utilization rate of the molten steel is improved.

Description

Technical Field

[0001] This utility model relates to the field of casting technology, specifically to a riser structure based on high-toughness and wear-resistant modified high-manganese steel. Background Technology

[0002] Molten steel casting is the process of pouring molten steel into a mold and allowing it to cool and solidify to form a casting. It is a key step in the casting process. Molten steel casting can produce steel castings with complex shapes and precise dimensions. For some large and heavy castings, such as large wind power equipment and mining machinery, molten steel casting is the main production method.

[0003] During the pouring process, molten steel undergoes liquid shrinkage due to temperature reduction, leading to defects such as voids and shrinkage cavities inside the casting. A riser, as a cavity storing molten metal, provides additional molten metal to the casting, compensating for the voids caused by volume shrinkage during solidification and effectively preventing shrinkage cavities and porosity. Existing risers all employ automatic molten steel replenishment methods. For example, patent application number CN201611247894.X discloses a riser including a riser body with an insulation layer on its inner wall.

[0004] The above-mentioned feeding method relies on the static pressure of the molten metal in the riser and gate, which often requires the injection of excessive molten metal. This results in a large number of residual molten metal in the gate and riser after feeding, reducing the process yield. Utility Model Content

[0005] Based on the shortcomings of existing technologies in using static pressure to compensate for molten steel in riser structures, this utility model provides a riser structure based on high-toughness and wear-resistant modified high-manganese steel.

[0006] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows:

[0007] The riser structure based on high-toughness and wear-resistant modified high-manganese steel includes a riser body, an internal vertical riser cavity, and a molten steel addition channel communicating with the riser cavity on its sidewall. The riser cavity contains a pressure compensation structure that vertically presses down on the molten steel within it. As the main component and space for storing molten steel and feeding the casting, the vertical arrangement of the riser cavity facilitates feeding the casting under gravity, reducing defects such as shrinkage cavities and porosity during solidification.

[0008] Preferably, the top of the vent has a heat-insulating layer, above which is an isolation cavity. The isolation cavity is used for heat insulation to prevent the temperature in this area from becoming too high, thus allowing for the installation of structures such as springs.

[0009] As a preferred embodiment, the pressure compensation structure includes a rod that penetrates the top wall and partition of the isolation chamber and a high-temperature resistant pressure head disposed at the bottom end of the rod. The side wall of the pressure head matches the side wall of the riser cavity. When compensating for molten steel, the pressure head slides downward to apply pressure to the molten steel in the riser cavity.

[0010] Preferably, the rod has an annular platform, and a spring is fitted onto the side wall of the rod above the annular platform. The spring and the annular platform are located within an isolation cavity. The spring applies a spring force to the annular platform, causing the pressing head to exert a downward force. This structure is used to apply a downward spring force to the pressing head.

[0011] Preferably, a limiting head is provided at the top of the rod. The limiting head is used to limit the downward stroke of the rod.

[0012] Preferably, the riser cavity is cylindrical. The cylindrical riser cavity has a simple structure, is easy to process, and allows molten steel to be evenly distributed within it, which is beneficial for pressure transmission and molten steel flow, while also helping to improve the strength and stability of the riser.

[0013] Preferably, the riser body has an arc-shaped molten steel addition pipe on its side wall, and the space inside the molten steel addition pipe serves as a molten steel addition channel. The arc-shaped molten steel addition pipe is reasonably designed to facilitate the addition and flow of molten steel and reduce splashing and loss of molten steel during the addition process; the molten steel addition channel serves as the passage for molten steel to enter the riser cavity, ensuring that the molten steel can smoothly enter the riser for feeding.

[0014] Preferably, the top of the molten steel adding pipe is horizontal, and the top of the molten steel adding pipe is equipped with a removable cover. The removable cover makes it easy to open when molten steel needs to be added, and can also be used to prevent heat loss from the molten steel and the entry of impurities.

[0015] Preferably, the inner ring of the bottom end of the riser body is a flat surface, and its outer ring is a curved surface with an arc shape. This structure forms a notch in the outer ring for easy disassembly.

[0016] Preferably, the riser body is made of high-toughness, wear-resistant modified high-manganese steel. High-toughness, wear-resistant modified high-manganese steel has excellent wear resistance and toughness, can withstand the high temperature of molten steel and the pressure during the feeding process, is not easily damaged, extends the service life of the riser, and also helps improve the quality of castings and production efficiency.

[0017] Compared with the prior art, the advantages of this utility model are as follows: By setting a pressurizing device, the molten steel can be pressurized appropriately during replenishment, thereby improving the efficiency of replenishment and allowing the molten steel to be replenished in a timely manner, avoiding the need for additional heating of the molten steel due to excessive replenishment time; in addition, it can achieve effective replenishment at a lower metal liquid level, reducing the amount of molten steel injected, thereby reducing the residual amount of molten steel and improving the utilization rate of molten steel. Attached Figure Description

[0018] The present invention will be further described in detail below with reference to the accompanying drawings and preferred embodiments. However, those skilled in the art will understand that these drawings are drawn only for the purpose of explaining the preferred embodiments and therefore should not be construed as limiting the scope of the present invention. Furthermore, unless specifically indicated, the drawings are only schematic representations of the composition or structure of the described objects and may contain exaggerated depictions, and the drawings are not necessarily drawn to scale.

[0019] Figure 1 This is a side view of this application;

[0020] Figure 2 This is a perspective view of the present application;

[0021] Figure 3 This is a cross-sectional view of this application;

[0022] In the diagram: 10, riser body; 101, riser mouth; 102, partition; 103, isolation chamber; 20, molten steel addition pipe; 201, molten steel addition channel; 30, pressure compensation structure; 301, rod; 3011, annular platform; 302, downward pressure head; 303, limit head; 304, spring. Detailed Implementation

[0023] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Those skilled in the art will appreciate that these descriptions are merely descriptive and exemplary and should not be construed as limiting the scope of protection of the present invention.

[0024] Example:

[0025] Riser structures based on high-toughness and wear-resistant modified high-manganese steel, such as Figure 1-3 The riser body 10 includes a vertical riser cavity 101 inside the riser body 10, and a molten steel adding channel 201 communicating with the riser cavity 101 on its side wall. The riser cavity 101 contains a pressure compensation structure 30 that vertically presses down on the molten steel inside the riser cavity 101. As the main component and space for storing molten steel and feeding the casting, the vertical arrangement of the riser cavity 101 facilitates the feeding of the casting by molten steel under gravity, reducing defects such as shrinkage cavities and porosity in the casting during solidification.

[0026] Preferably, the top of the riser 101 is provided with a heat insulation layer 102, and above the heat insulation layer 102 is an isolation cavity 103. The isolation cavity 103 is used for heat insulation to prevent the temperature in this area from becoming too high, so as to install structures such as springs 304. In order to facilitate the installation of pressure compensation structure 30, the riser body 10 can adopt an upper and lower separated welding structure.

[0027] Preferably, the pressure compensation structure 30 includes a rod 301 that penetrates the top wall of the isolation cavity 103 and the partition 102, and a high-temperature resistant pressure head 302 disposed at the bottom end of the rod 301. The side wall of the pressure head 302 matches the side wall of the riser cavity 101. When compensating for molten steel, the pressure head 302 slides downward to apply pressure to the molten steel in the riser cavity 101.

[0028] Preferably, the rod 301 is provided with an annular platform 3011, and a spring 304 is sleeved on the side wall of the rod 301 above the annular platform 3011. The spring 304 and the annular platform 3011 are located in the isolation cavity 103. The spring 304 applies a spring force to the annular platform 3011, causing the pressing head 302 to have a downward pressing force. This structure is used to apply a downward spring force to the pressing head 302.

[0029] Preferably, the top end of the rod 301 is provided with a limiting head 303. The limiting head 303 is used to limit the downward stroke of the rod 301.

[0030] Preferably, the riser cavity 101 is a cylindrical cavity. The cylindrical riser cavity 101 has a simple structure, is easy to process, and can make the molten steel evenly distributed in it, which is beneficial to the transmission of pressure and the flow of molten steel, and also helps to improve the strength and stability of the riser.

[0031] Preferably, the riser body 10 has an arc-shaped molten steel adding pipe 20 on its side wall, and the space inside the molten steel adding pipe 20 is a molten steel adding channel 201. The arc-shaped molten steel adding pipe 20 is reasonably designed to facilitate the addition and flow of molten steel and reduce splashing and loss of molten steel during the addition process; the molten steel adding channel 201 serves as the channel for molten steel to enter the riser cavity 101, ensuring that the molten steel can smoothly enter the riser for feeding.

[0032] Preferably, the top of the molten steel adding pipe 20 is horizontal, and the top of the molten steel adding pipe 20 is provided with a removable cover. The removable cover is convenient to open when molten steel needs to be added, and can also be used to prevent heat loss of molten steel and the entry of impurities.

[0033] Preferably, the inner ring of the bottom end of the riser body 10 is a flat surface, and its outer ring is an arc-shaped curved surface. This structure forms a notch in the outer ring for easy disassembly.

[0034] Preferably, the riser body 10 is made of high-toughness, wear-resistant modified high-manganese steel. High-toughness, wear-resistant modified high-manganese steel has good wear resistance and toughness, can withstand the high temperature of molten steel and the pressure during the feeding process, is not easily damaged, extends the service life of the riser, and also helps to improve the quality of castings and production efficiency.

[0035] The riser structure based on high-toughness and wear-resistant modified high-manganese steel provided by this utility model has been introduced above. Specific examples have been used to illustrate the principle and implementation of this utility model. The descriptions of the above embodiments are only for the purpose of helping to understand this utility model and its core ideas. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A structure of a riser based on high toughness wear resistant modified high manganese steel, characterized in that, The riser body is internally provided with a vertical riser cavity and its side wall is provided with a molten steel adding channel communicated with the riser cavity, and the riser cavity is internally provided with a pressure compensation structure vertically pressing the molten steel in the riser cavity.

2. The high toughness abrasion resistant modified high manganese steel based riser structure according to claim 1, characterized in that, The top of the riser cavity is provided with an insulating layer for heat insulation, and the upper portion of the insulating layer is an isolation cavity.

3. The high toughness abrasion resistant modified high manganese steel based riser structure according to claim 2, characterized in that, The pressure compensation structure comprises a rod penetrating through the top wall of the isolation cavity and the insulating layer and a high-temperature-resistant pressing head arranged at the bottom end of the rod, and the side wall of the pressing head is in line with the side wall of the riser cavity, so that when the compensation of the molten steel is performed, the pressing head slides downward to exert pressure on the molten steel in the riser cavity.

4. The high toughness abrasion resistant modified high manganese steel based riser structure according to claim 3, characterized in that, An annular table is arranged on the rod, a spring is sleeved on the side wall of the rod above the annular table, the spring and the annular table are located in the isolation cavity, the spring exerts elastic force on the annular table to make the pressing head have the pressing force.

5. The high toughness abrasion resistant modified high manganese steel based riser structure according to claim 3, characterized in that, The top end of the rod is provided with a limiting head.

6. The high toughness abrasion resistant modified high manganese steel based riser structure according to claim 1, characterized in that, The riser cavity is a cylindrical cavity.

7. The high toughness abrasion resistant modified high manganese steel based riser structure according to claim 1, characterized in that, The side wall of the riser body is provided with an arc-shaped molten steel adding pipe, and the space in the molten steel adding pipe is the molten steel adding channel.

8. The high toughness abrasion resistant modified high manganese steel based riser structure according to claim 7, characterized in that, The top of the molten steel adding pipe is a horizontal plane, and the top of the molten steel adding pipe is provided with a detachable cover.

9. The high toughness abrasion resistant modified high manganese steel based riser structure according to claim 7, characterized in that, The inner ring of the bottom end of the riser body is an abutting plane, and the outer ring is a circular arc curved surface.

10. The high-toughness abrasion-resistant modified high manganese steel based riser structure according to any one of claims 1 to 9, characterized in that, The riser body is made of high-toughness wear-resistant modified high manganese steel.

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