Integral compression molding die for hard alloy liner of high-capacity ball mill

Abstract

The utility model discloses a high capacity ball mill hard alloy inner container integral compression moulding mould, the inner container comprises a shell and a bottom plate, the shell comprises a small cylindrical surface, a small conical surface, a large conical surface and a large cylindrical surface which are sequentially connected from top to bottom, the bottom plate is arranged at the bottom of the large cylindrical surface, and the mould is an assembled mould. Comprising a square core shaft and four inner molds attached to the four side faces of the square core shaft, and after the four inner molds are spliced to the four side faces of the square core shaft, the outer side faces of the four inner molds are matched with the shell in shape. According to the utility model, the square core shaft is combined with the four-petal inner mold, so that the mold can be conveniently mounted and demolded.

Description

Technical Field

[0001] This utility model relates to the field of cemented carbide manufacturing technology, specifically a large-capacity ball mill cemented carbide inner liner integral pressing mold. Background Technology

[0002] In the production of cemented carbide products, wet grinding is a crucial process, its efficiency directly impacting the quality of the finished product. A wet grinding mill consists of a cylinder (inner liner), a geared motor, sprockets and chains, bearings, hydraulic cylinders, a frame, and a control system. The cylinder (inner liner) is one of the most critical components. In the 1980s and 90s, ball mills initially used alloy liners, with hundreds of alloy liners forming the inner liner. During production, these liners were prone to detachment, requiring frequent repairs and severely impacting delivery times. To address this, ball mills with non-magnetic stainless steel inner liners were developed. Using non-magnetic stainless steel for the 200L / 300L inner liner of a ball mill (also called a wet grinding mill) offers advantages such as ease of manufacture and relatively low cost. However, it also has disadvantages such as easy wear and tear, and the mixing of abrasive material with the grinding media increases impurities in the grinding media, affecting its performance. To reduce the mixing of grinding media, some existing technologies use carbide liner materials instead of stainless steel, such as the novel carbide stirred ball mill disclosed in Chinese patent CN106513691A. However, due to the limitations of the carbide material itself, it is difficult to manufacture a large-capacity carbide liner with a capacity of 200L or more through one-piece molding.

[0003] The information disclosed in the above background section is only intended to enhance the understanding of the overall background of this utility model, and should not be construed as an admission or in any way implying that such information constitutes prior art known to those skilled in the art. Utility Model Content

[0004] To address the aforementioned shortcomings, the purpose of this invention is to provide a large-capacity ball mill carbide inner liner integral pressing mold. By using a square mandrel combined with a four-lobed inner mold, the mold can be easily installed and demolded.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A large-capacity ball mill carbide inner liner integral pressing mold is disclosed. The inner liner includes a shell and a bottom plate. The shell consists of a small cylindrical surface, a small conical surface, a large conical surface, and a large cylindrical surface connected sequentially from top to bottom. The bottom plate is provided at the bottom of the large cylindrical surface. The mold is an assembly mold, including a square mandrel and four inner molds that fit against the four sides of the square mandrel. After the four inner molds are assembled to the four sides of the square mandrel, the shape of their outer surfaces is adapted to the shell.

[0007] Furthermore, the two ends of the square mandrel protrude from the top and bottom surfaces of the four inner molds, respectively.

[0008] Furthermore, the inner liner has a capacity of 200-300L.

[0009] Furthermore, the internal diameter of the cross-section of the large cylindrical surface is 620–707 mm.

[0010] Compared with the prior art, the present invention has the following beneficial effects:

[0011] This utility model is a mold designed for the hard alloy inner liner of a large-capacity ball mill with a special shape. By combining a square mandrel with a four-lobed inner mold, the mold can be easily installed and demolded. Attached Figure Description

[0012] Figure 1 Here is a schematic diagram of the integral carbide inner liner structure described in this embodiment of the invention.

[0013] Figure 2 Here is a schematic diagram of the cemented carbide integral inner liner assembly mold structure according to an embodiment of the present invention;

[0014] Figure 3 See: Top view of the cemented carbide integral inner liner assembly mold according to an embodiment of the present invention;

[0015] Figure 4 Exploded view of the cemented carbide integral inner liner assembly mold described in the embodiment of the present invention;

[0016] Figure 5 Here is a schematic diagram of the cold isostatic pressing of the integral cemented carbide inner liner according to an embodiment of the present invention;

[0017] In the diagram, 1-small cylindrical surface; 2-small conical surface; 3-large conical surface; 4-large cylindrical surface; 5-base plate; 6-first inner mold; 7-second inner mold; 8-third inner mold; 9-fourth inner mold; 10-square mandrel; 11-first plug; 12-first plug; 14-hard alloy powder; 13-assembled mold; 15-elastic mold sleeve. Detailed Implementation

[0018] To explain the technical content, objectives, and effects of this utility model in detail, the following description is provided in conjunction with the embodiments and accompanying drawings. In the description of these embodiments, it should be understood that terms indicating orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings and are used only for the convenience of describing these embodiments and simplifying the description. They do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0019] A 300L cemented carbide integral inner liner has the following specifications: height 1100mm, diameter 707mm, wall thickness 14mm, and weight 475kg. The cemented carbide is YG10 grade. The inner liner includes a shell and a bottom plate 5. The shell consists of a small cylindrical surface 1, a small conical surface 2, a large conical surface 3, and a large cylindrical surface 4 connected sequentially from top to bottom. The bottom plate 5 is located at the bottom of the large cylindrical surface 4. The inner liner is formed using the following integral pressing method, including the following steps:

[0020] Step 1: Mold assembly. The mold is an assembly mold 13, including a square mandrel 10 and four inner molds that fit against the four sides of the square mandrel 10. The four inner molds are the first inner mold 6, the second inner mold 7, the third inner mold 8, and the fourth inner mold 9. After the four inner molds are assembled to the four sides of the square mandrel 10, their outer side shapes are adapted to the shell. First, fix one end of the square mandrel 10 to the first plug 11, then install the four inner molds on the four sides of the square mandrel 10, put the elastic mold sleeve 15 on the outside of the four inner molds, put hard alloy powder 14 between the elastic mold sleeve 15 and the four inner molds, and finally fix the other end of the square mandrel 10 with the second plug 12, thus completing the assembly of the pressing mold.

[0021] Step 2: Pressing: Place the mold containing the cemented carbide powder 14 into a dry bag cold isostatic press for pressing. When pressing, the circumference of the elastic mold sleeve 15 is evenly compressed, while the two ends of the elastic mold sleeve 15 are not compressed.

[0022] Step 3: Demolding. First, remove the first plug 11 and the second plug 12. Then, remove the square mandrel 10 and the four-lobed inner mold. Finally, remove the pressed inner shell from the elastic mold sleeve 15.

[0023] Step 4, Sintering: The pressed inner shell and the pre-sintered base plate 5 are sintered together to finally obtain the cemented carbide inner shell of the large-capacity ball mill.

[0024] Example 2: Specifications of a 300L cemented carbide integral inner liner: height 1100mm, diameter 707mm, weight 475kg, wall thickness 14mm; the cemented carbide is YG15 grade cemented carbide. The inner liner includes a shell and a bottom plate 5. The shell consists of a small cylindrical surface 1, a small conical surface 2, a large conical surface 3, and a large cylindrical surface 4 connected sequentially from top to bottom. The bottom plate 5 is set at the bottom of the large cylindrical surface 4. It is formed by the following integral pressing molding method, including the following steps:

[0025] Step 1: Mold assembly. The mold is an assembly mold 13, including a square mandrel 10 and four inner molds that fit against the four sides of the square mandrel 10. The four inner molds are the first inner mold 6, the second inner mold 7, the third inner mold 8, and the fourth inner mold 9. After the four inner molds are assembled to the four sides of the square mandrel 10, their outer side shapes are adapted to the shell. First, fix one end of the square mandrel 10 to the first plug 11, then install the four inner molds on the four sides of the square mandrel 10, put the elastic mold sleeve 15 on the outside of the four inner molds, put hard alloy powder 14 between the elastic mold sleeve 15 and the four inner molds, and finally fix the other end of the square mandrel 10 with the second plug 12, thus completing the assembly of the pressing mold.

[0026] Step 2: Pressing: Place the mold containing the cemented carbide powder 14 into a dry bag cold isostatic press for pressing. When pressing, the circumference of the elastic mold sleeve 15 is evenly compressed, while the two ends of the elastic mold sleeve 15 are not compressed.

[0027] Step 3: Demolding. First, remove the first plug 11 and the second plug 12. Then, remove the square mandrel 10 and the four-lobed inner mold. Finally, remove the pressed inner shell from the elastic mold sleeve 15.

[0028] Step 4, Sintering: The pressed inner shell and the pre-sintered base plate 5 are sintered together to finally obtain the cemented carbide inner shell of the large-capacity ball mill.

[0029] Example 3, specifications of a 300L cemented carbide integral inner liner: height 1100mm, wall thickness 14mm, diameter 707mm, weight 475kg; the cemented carbide is YG20 grade cemented carbide. The inner liner includes a shell and a bottom plate 5. The shell consists of a small cylindrical surface 1, a small conical surface 2, a large conical surface 3, and a large cylindrical surface 4 connected sequentially from top to bottom. The bottom plate 5 is set at the bottom of the large cylindrical surface 4. It is formed by the following integral pressing molding method, including the following steps:

[0030] Step 1: Mold assembly. The mold is an assembly mold 13, including a square mandrel 10 and four inner molds that fit against the four sides of the square mandrel 10. The four inner molds are the first inner mold 6, the second inner mold 7, the third inner mold 8, and the fourth inner mold 9. After the four inner molds are assembled to the four sides of the square mandrel 10, their outer side shapes are adapted to the shell. First, fix one end of the square mandrel 10 to the first plug 11, then install the four inner molds on the four sides of the square mandrel 10, put the elastic mold sleeve 15 on the outside of the four inner molds, put hard alloy powder 14 between the elastic mold sleeve 15 and the four inner molds, and finally fix the other end of the square mandrel 10 with the second plug 12, thus completing the assembly of the pressing mold.

[0031] Step 2: Pressing: Place the mold containing the cemented carbide powder 14 into a dry bag cold isostatic press for pressing. When pressing, the circumference of the elastic mold sleeve 15 is evenly compressed, while the two ends of the elastic mold sleeve 15 are not compressed.

[0032] Step 3: Demolding. First, remove the first plug 11 and the second plug 12. Then, remove the square mandrel 10 and the four-lobed inner mold. Finally, remove the pressed inner shell from the elastic mold sleeve 15.

[0033] Step 4, Sintering: The pressed inner shell and the pre-sintered base plate 5 are sintered together to finally obtain the cemented carbide inner shell of the large-capacity ball mill.

[0034] Example 4: Specifications of a 300L cemented carbide integral inner liner: height 1100mm, diameter 707mm, weight 475kg; the cemented carbide is YG25 grade cemented carbide. The inner liner includes a shell and a bottom plate 5. The shell consists of a small cylindrical surface 1, a small conical surface 2, a large conical surface 3, and a large cylindrical surface 4 connected sequentially from top to bottom. The bottom plate 5 is set at the bottom of the large cylindrical surface 4. It is formed by the following integral pressing molding method, including the following steps:

[0035] Step 1: Mold assembly. The mold is an assembly mold 13, including a square mandrel 10 and four inner molds that fit against the four sides of the square mandrel 10. The four inner molds are the first inner mold 6, the second inner mold 7, the third inner mold 8, and the fourth inner mold 9. After the four inner molds are assembled to the four sides of the square mandrel 10, their outer side shapes are adapted to the shell. First, fix one end of the square mandrel 10 to the first plug 11, then install the four inner molds on the four sides of the square mandrel 10, put the elastic mold sleeve 15 on the outside of the four inner molds, put hard alloy powder 14 between the elastic mold sleeve 15 and the four inner molds, and finally fix the other end of the square mandrel 10 with the second plug 12, thus completing the assembly of the pressing mold.

[0036] Step 2: Pressing: Place the mold containing the cemented carbide powder 14 into a dry bag cold isostatic press for pressing. When pressing, the circumference of the elastic mold sleeve 15 is evenly compressed, while the two ends of the elastic mold sleeve 15 are not compressed.

[0037] Step 3: Demolding. First, remove the first plug 11 and the second plug 12. Then, remove the square mandrel 10 and the four-lobed inner mold. Finally, remove the pressed inner shell from the elastic mold sleeve 15.

[0038] Step 4, Sintering: The pressed inner shell and the pre-sintered base plate 5 are sintered together to finally obtain the cemented carbide inner shell of the large-capacity ball mill.

[0039] Example 5: Specifications of a 300L cemented carbide integral inner liner: height 1100mm, diameter 707mm, weight 475kg; the cemented carbide is YG25 grade cemented carbide. The inner liner includes a shell and a bottom plate 5. The shell consists of a small cylindrical surface 1, a small conical surface 2, a large conical surface 3, and a large cylindrical surface 4 connected sequentially from top to bottom. The bottom plate 5 is set at the bottom of the large cylindrical surface 4. It is formed by the following integral pressing molding method, including the following steps:

[0040] Step 1: Mold assembly. The mold is an assembly mold 13, including a square mandrel 10 and four inner molds that fit against the four sides of the square mandrel 10. The four inner molds are the first inner mold 6, the second inner mold 7, the third inner mold 8, and the fourth inner mold 9. After the four inner molds are assembled to the four sides of the square mandrel 10, their outer side shapes are adapted to the shell. First, fix one end of the square mandrel 10 to the first plug 11, then install the four inner molds on the four sides of the square mandrel 10, put the elastic mold sleeve 15 on the outside of the four inner molds, put hard alloy powder 14 between the elastic mold sleeve 15 and the four inner molds, and finally fix the other end of the square mandrel 10 with the second plug 12, thus completing the assembly of the pressing mold.

[0041] Step 2: Pressing: Place the mold containing the cemented carbide powder 14 into a dry bag cold isostatic press for pressing. When pressing, the circumference of the elastic mold sleeve 15 is evenly compressed, while the two ends of the elastic mold sleeve 15 are not compressed.

[0042] Step 3: Demolding. First, remove the first plug 11 and the second plug 12. Then, remove the square mandrel 10 and the four-lobed inner mold. Finally, remove the pressed inner shell from the elastic mold sleeve 15.

[0043] Step 4, Sintering: The pressed inner shell and the pre-sintered base plate 5 are sintered together to finally obtain the cemented carbide inner shell of the large-capacity ball mill.

[0044] Example 6

[0045] 200L cemented carbide overall specifications: height 1030mm, diameter 620mm, weight 389kg; cemented carbide is YG10 grade; a method for integrally pressing and forming a cemented carbide inner liner for a large-capacity ball mill is described. The inner liner includes a shell and a bottom plate 5. The shell consists of a small cylindrical surface 1, a small conical surface 2, a large conical surface 3, and a large cylindrical surface 4 connected sequentially from top to bottom. The bottom plate 5 is set at the bottom of the large cylindrical surface 4. The method includes the following steps:

[0046] Step 1: Mold assembly. The mold is an assembly mold 13, including a square mandrel 10 and four inner molds that fit against the four sides of the square mandrel 10. The four inner molds are the first inner mold 6, the second inner mold 7, the third inner mold 8, and the fourth inner mold 9. After the four inner molds are assembled to the four sides of the square mandrel 10, their outer side shapes are adapted to the shell. First, fix one end of the square mandrel 10 to the first plug 11, then install the four inner molds on the four sides of the square mandrel 10, put the elastic mold sleeve 15 on the outside of the four inner molds, put hard alloy powder 14 between the elastic mold sleeve 15 and the four inner molds, and finally fix the other end of the square mandrel 10 with the second plug 12, thus completing the assembly of the pressing mold.

[0047] Step 2: Pressing: Place the mold containing the cemented carbide powder 14 into a dry bag cold isostatic press for pressing. When pressing, the circumference of the elastic mold sleeve 15 is evenly compressed, while the two ends of the elastic mold sleeve 15 are not compressed.

[0048] Step 3: Demolding. First, remove the first plug 11 and the second plug 12. Then, remove the square mandrel 10 and the four-lobed inner mold. Finally, remove the pressed inner shell from the elastic mold sleeve 15.

[0049] Step 4, Sintering: The pressed inner shell and the pre-sintered base plate 5 are sintered together to finally obtain the cemented carbide inner shell of the large-capacity ball mill.

[0050] 200L cemented carbide overall specifications: height 1030mm, diameter 620mm, weight 389kg; cemented carbide is YG15 grade; a method for integrally pressing and forming a cemented carbide inner liner for a large-capacity ball mill is described. The inner liner includes a shell and a bottom plate 5. The shell consists of a small cylindrical surface 1, a small conical surface 2, a large conical surface 3, and a large cylindrical surface 4 connected sequentially from top to bottom. The bottom plate 5 is set at the bottom of the large cylindrical surface 4. The method includes the following steps:

[0051] Step 1: Mold assembly. The mold is an assembly mold 13, including a square mandrel 10 and four inner molds that fit against the four sides of the square mandrel 10. The four inner molds are the first inner mold 6, the second inner mold 7, the third inner mold 8, and the fourth inner mold 9. After the four inner molds are assembled to the four sides of the square mandrel 10, their outer side shapes are adapted to the shell. First, fix one end of the square mandrel 10 to the first plug 11, then install the four inner molds on the four sides of the square mandrel 10, put the elastic mold sleeve 15 on the outside of the four inner molds, put hard alloy powder 14 between the elastic mold sleeve 15 and the four inner molds, and finally fix the other end of the square mandrel 10 with the second plug 12, thus completing the assembly of the pressing mold.

[0052] Step 2: Pressing: Place the mold containing the cemented carbide powder 14 into a dry bag cold isostatic press for pressing. When pressing, the circumference of the elastic mold sleeve 15 is evenly compressed, while the two ends of the elastic mold sleeve 15 are not compressed.

[0053] Step 3: Demolding. First, remove the first plug 11 and the second plug 12. Then, remove the square mandrel 10 and the four-lobed inner mold. Finally, remove the pressed inner shell from the elastic mold sleeve 15.

[0054] Step 4, Sintering: The pressed inner shell and the pre-sintered base plate 5 are sintered together to finally obtain the cemented carbide inner shell of the large-capacity ball mill.

[0055] Example 8

[0056] 200L cemented carbide overall specifications: height 1030mm, diameter 620mm, weight 389kg; cemented carbide is YG25 grade; a method for integrally pressing and forming a cemented carbide inner liner for a large-capacity ball mill is described. The inner liner includes a shell and a bottom plate 5. The shell consists of a small cylindrical surface 1, a small conical surface 2, a large conical surface 3, and a large cylindrical surface 4 connected sequentially from top to bottom. The bottom plate 5 is set at the bottom of the large cylindrical surface 4. The method includes the following steps:

[0057] Step 1: Mold assembly. The mold is an assembly mold 13, including a square mandrel 10 and four inner molds that fit against the four sides of the square mandrel 10. The four inner molds are the first inner mold 6, the second inner mold 7, the third inner mold 8, and the fourth inner mold 9. After the four inner molds are assembled to the four sides of the square mandrel 10, their outer side shapes are adapted to the shell. First, fix one end of the square mandrel 10 to the first plug 11, then install the four inner molds on the four sides of the square mandrel 10, put the elastic mold sleeve 15 on the outside of the four inner molds, put hard alloy powder 14 between the elastic mold sleeve 15 and the four inner molds, and finally fix the other end of the square mandrel 10 with the second plug 12, thus completing the assembly of the pressing mold.

[0058] Step 2: Pressing: Place the mold containing the cemented carbide powder 14 into a dry bag cold isostatic press for pressing. When pressing, the circumference of the elastic mold sleeve 15 is evenly compressed, while the two ends of the elastic mold sleeve 15 are not compressed.

[0059] Step 3: Demolding. First, remove the first plug 11 and the second plug 12. Then, remove the square mandrel 10 and the four-lobed inner mold. Finally, remove the pressed inner shell from the elastic mold sleeve 15.

[0060] Step 4, Sintering: The pressed inner shell and the pre-sintered base plate 5 are sintered together to finally obtain the cemented carbide inner shell of the large-capacity ball mill.

[0061] Example 9

[0062] 200L cemented carbide overall specifications: height 1030mm, diameter 620mm, weight 389kg; cemented carbide is YG16 grade; a method for integrally pressing and forming a cemented carbide inner liner for a large-capacity ball mill is described. The inner liner includes a shell and a bottom plate 5. The shell consists of a small cylindrical surface 1, a small conical surface 2, a large conical surface 3, and a large cylindrical surface 4 connected sequentially from top to bottom. The bottom plate 5 is set at the bottom of the large cylindrical surface 4. The method includes the following steps:

[0063] Step 1: Mold assembly. The mold is an assembly mold 13, including a square mandrel 10 and four inner molds that fit against the four sides of the square mandrel 10. The four inner molds are the first inner mold 6, the second inner mold 7, the third inner mold 8, and the fourth inner mold 9. After the four inner molds are assembled to the four sides of the square mandrel 10, their outer side shapes are adapted to the shell. First, fix one end of the square mandrel 10 to the first plug 11, then install the four inner molds on the four sides of the square mandrel 10, put the elastic mold sleeve 15 on the outside of the four inner molds, put hard alloy powder 14 between the elastic mold sleeve 15 and the four inner molds, and finally fix the other end of the square mandrel 10 with the second plug 12, thus completing the assembly of the pressing mold.

[0064] Step 2: Pressing: Place the mold containing the cemented carbide powder 14 into a dry bag cold isostatic press for pressing. When pressing, the circumference of the elastic mold sleeve 15 is evenly compressed, while the two ends of the elastic mold sleeve 15 are not compressed.

[0065] Step 3: Demolding. First, remove the first plug 11 and the second plug 12. Then, remove the square mandrel 10 and the four-lobed inner mold. Finally, remove the pressed inner shell from the elastic mold sleeve 15.

[0066] Step 4, Sintering: The pressed inner shell and the pre-sintered base plate 5 are sintered together to finally obtain the cemented carbide inner shell of the large-capacity ball mill.

[0067] Example 10

[0068] 200L cemented carbide overall specifications: height 1030mm, diameter 620mm, weight 389kg; cemented carbide is YG15 grade; a method for integrally pressing and forming a cemented carbide inner liner for a large-capacity ball mill is described. The inner liner includes a shell and a bottom plate 5. The shell consists of a small cylindrical surface 1, a small conical surface 2, a large conical surface 3, and a large cylindrical surface 4 connected sequentially from top to bottom. The bottom plate 5 is set at the bottom of the large cylindrical surface 4. The method includes the following steps:

[0069] Step 1: Mold assembly. The mold is an assembly mold 13, including a square mandrel 10 and four inner molds that fit against the four sides of the square mandrel 10. The four inner molds are the first inner mold 6, the second inner mold 7, the third inner mold 8, and the fourth inner mold 9. After the four inner molds are assembled to the four sides of the square mandrel 10, their outer side shapes are adapted to the shell. First, fix one end of the square mandrel 10 to the first plug 11, then install the four inner molds on the four sides of the square mandrel 10, put the elastic mold sleeve 15 on the outside of the four inner molds, put hard alloy powder 14 between the elastic mold sleeve 15 and the four inner molds, and finally fix the other end of the square mandrel 10 with the second plug 12, thus completing the assembly of the pressing mold.

[0070] Step 2: Pressing: Place the mold containing the cemented carbide powder 14 into a dry bag cold isostatic press for pressing. When pressing, the circumference of the elastic mold sleeve 15 is evenly compressed, while the two ends of the elastic mold sleeve 15 are not compressed.

[0071] Step 3: Demolding. First, remove the first plug 11 and the second plug 12. Then, remove the square mandrel 10 and the four-lobed inner mold. Finally, remove the pressed inner shell from the elastic mold sleeve 15.

[0072] Step 4, Sintering: The pressed inner shell and the pre-sintered base plate 5 are sintered together to finally obtain the cemented carbide inner shell of the large-capacity ball mill.

[0073] This utility model is a mold designed for the hard alloy inner liner of a large-capacity ball mill with a special shape. By combining a square mandrel with a four-lobed inner mold, the mold can be easily installed and demolded.

[0074] Although the present invention has been described in detail above with specific embodiments, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of the present invention fall within the scope of protection claimed by the present invention.

Claims

1. A mold for integrally pressing and forming a large-capacity ball mill carbide inner liner, characterized in that: The inner liner includes a shell and a bottom plate. The shell consists of a small cylindrical surface, a small conical surface, a large conical surface, and a large cylindrical surface connected sequentially from top to bottom. The bottom plate is set at the bottom of the large cylindrical surface. The mold is an assembly mold, including a square mandrel and four inner molds that fit against the four sides of the square mandrel. After the four inner molds are assembled to the four sides of the square mandrel, the shape of their outer side surfaces is adapted to the shell.

2. The integral pressing mold for a large-capacity ball mill carbide inner liner according to claim 1, characterized in that: The two ends of the square mandrel protrude from the top and bottom surfaces of the four inner molds, respectively.

3. The integral pressing mold for a large-capacity ball mill carbide inner liner according to claim 1, characterized in that: The inner liner has a capacity of 200-300L.

4. The integral pressing mold for a large-capacity ball mill carbide inner liner according to claim 1, characterized in that: The internal diameter of the cross-section of the large cylindrical surface is 620–707 mm.

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