A high strength alloy liner plate and a method of manufacturing the same

Abstract

This invention relates to the field of ball mill technology, specifically to a high-strength alloy liner and its manufacturing method, comprising a main plate and side plates. The main plate includes a surface plate, a middle pad, and a bottom plate stacked sequentially, with movable sealing ribs on the edges of all three. The middle pad has embedded magnetic blocks. A quick-fastening post is provided on the side of the surface plate near the inner wall of the ball mill, passing through holes in the middle pad and the bottom plate. A tightening mechanism is provided at the end of the quick-fastening post that is not connected to the surface plate. A rotatable grinding-aiding agitator is provided on the fan-shaped plate body. The sealing ribs include arc-shaped ribs and flat-shaped ribs protruding from the main plate. This invention improves the loading and unloading efficiency of the alloy liner; after wear reaches its limit, only the surface layer needs to be replaced; a protective layer is formed on the surface of the surface plate in contact with the material being ground; it provides grinding and stirring effects on the material on the side during ball mill operation; and it also achieves automatic sealing of the joints between adjacent main plates.

Description

Technical Field

[0001] This invention relates to the field of ball mill technology, and more specifically to a high-strength alloy liner and its manufacturing method. Background Technology

[0002] Ball mills are key equipment for pulverizing materials after they have been crushed. They are suitable for grinding various ores and other materials and are widely used in mineral processing, building materials and chemical industries.

[0003] Alloy liners are a layer of "protective armor" that needs to be installed on the inner wall of a ball mill. During operation, they are subjected to considerable impact, compression, and friction. Low-quality alloy liners have a very short service life, negatively impacting production. High-quality, wear-resistant, high-strength liners, made by incorporating metals such as chromium, titanium, and vanadium, can effectively extend their service life. However, simply improving the material is insufficient to comprehensively enhance the performance of the alloy liner and ultimately improve the grinding effect and efficiency of the ball mill. Summary of the Invention

[0004] The purpose of this invention is to provide a high-strength alloy liner plate. The advantages of this alloy liner plate include high strength, excellent wear resistance and corrosion resistance, suitability for various harsh working environments, quick and convenient loading and unloading on ball mills without the need for manual bolt connections, and automatic sealing between adjacent plates. The side plates also have a grinding-aiding effect, resulting in high crushing efficiency. Furthermore, a protective layer is formed on the material contact surface. A manufacturing method for this liner plate is also provided.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] A high-strength alloy liner includes a main plate and side plates. The main plate includes a surface plate, a middle pad, and a bottom plate stacked sequentially. Movable sealing strips are provided on the edges of the three plates. The middle pad is a soft body with a dot matrix embedded therein, and a quick-fastening post is provided on the side of the surface plate near the inner wall of the ball mill. The quick-fastening post passes through holes in the middle pad and the bottom plate. A tightening mechanism is provided at the end of the quick-fastening post that is not connected to the surface plate.

[0007] The side plate includes a fan-shaped plate body, on which a rotatable grinding agitator is provided. The grinding agitator is connected to a rotating shaft that passes through the fan-shaped plate body and a rotating weight is connected to the other side of the fan-shaped plate body. The center of gravity of the rotating weight is outside the central axis of the rotating shaft. The grinding agitator and the rotating weight move synchronously.

[0008] Furthermore, the tightening mechanism includes two tightening bars that clamp the quick-fastening column in the middle. Tightening inclined blocks are arranged opposite each other on the two tightening bars. The two tightening inclined blocks with opposite inclined surfaces from different tightening bars clamp the conical block at the end of the quick-fastening column in the middle. The ends of the two tightening bars on the same side are connected to a bidirectional reversible push-pull device.

[0009] Furthermore, the movable sealing strip includes an arc-shaped strip and a flat-shaped strip that partially protrude beyond the main board sheet. The arc-shaped strip is elastically connected to the middle gasket, and the flat-shaped strip is elastically connected to either or both of the surface sheet and the bottom sheet. The flat-shaped strip has a triangular cross-section, with its two inclined surfaces respectively contacting the surface sheet and the bottom sheet. The parts of the surface sheet and the bottom sheet that contact the flat-shaped strip are provided with beveled edges.

[0010] Furthermore, the bidirectional reversible push-pull device includes a screw and two screw blocks that are connected one-to-one with the tightening bar. The two screw blocks are misaligned to clamp the screw in the middle. The screw includes two spiral strips with opposite directions and are respectively matched with the two screw blocks. The two spiral strips are insulated from each other.

[0011] Furthermore, the magnetizing block includes an iron core and a spiral coil surrounding it. Positive and negative conductive plates are connected to both ends of the spiral coil. The quick-fastening post includes an electrically isolated positive half-post and a negative half-post, with an insulating plate sandwiched between the positive and negative half-posts. The positive and negative conductive plates are connected in polarity to conduct the semi-cylindrical bodies of the positive and negative half-posts. The semi-conical heads of the positive and negative half-posts are electrically connected to the tightening wedges that are in contact with them. The tightening wedges are electrically connected to the tightening strips connected to them. The tightening strips are connected to the positive and negative terminals of an external power supply.

[0012] Furthermore, the quick-fastening column is installed through the wall of the ball mill, and the tightening mechanism is installed on the outer surface of the ball mill; the tightening strip is connected to the outer wall of the ball mill by a linear slide rail.

[0013] A method for manufacturing a high-strength alloy liner, comprising:

[0014] S1: Heat and melt the molten metal, add alloy components and mix. The mixed components are: 0.8%-1.0% C, 0.6%-1.2% Si, 15%-20% Mn, 0.6%-0.8% Mo, 1.2%-1.6% Mg, 1.8%-2.5% Cr, 1.3%-2.0% V, 0.2%-1.6% Nb, 1.2%-2.5% W, 0.5%-2.0% Ti, 0.1%-0.3% N, S≤0.03%, P≤0.05%, with the remainder being Fe and unavoidable impurities. Cast the surface and bottom plates using a mold, heat treat them, and then mill beveled edges on the long straight edges.

[0015] S2: The enameled spiral coil is wound around the iron core and positioned in the rubber injection mold. Each spiral coil is connected to the positive and negative conductive plates. Hot melt rubber is injected, and the positive and negative conductive plates are exposed through the opening of the cooling and forming middle pad.

[0016] S3: Connect the flat-edge rib to either or both of the surface sheet and the bottom sheet through a stretchable elastic element. The positive and negative half-pillars sandwich the insulating sheet and pass through the bottom sheet and the middle pad in sequence to connect with the surface sheet.

[0017] S4: Connect one end of the screw block to the tightening bar, adjust the relative position of the two tightening bars, engage the helical teeth of the screw block and the screw rod, and connect the two tightening bars to the linear slide rails respectively;

[0018] S5: Forge a grinding agitator with one side uneven, with this side facing the main plate, and connect it to a free-form rotating shaft that runs through the main wall of the fan-shaped side plate. At the end of the rotating shaft that is not connected to the grinding agitator, connect a cast or cut rotating dropper.

[0019] Furthermore, an insulating ring is provided in the opening of the bottom plate to isolate the positive and negative half-pillars that have passed through.

[0020] Furthermore, the relative position adjustment of the two tightening bars must meet the following requirements: the two screw blocks do not contact each other; when the drive screw rotates in a certain direction, the distance between the two screw blocks shortens; the two tightening bars move in parallel and in opposite directions; and the two inclined tightening blocks with opposite slopes clamp and squeeze to quickly tighten the conical end.

[0021] Furthermore, the rotating shaft and the side plate are connected by bearings, and the rotating drop pieces are manufactured by casting or plate cutting. The number of grinding and stirring plates on each side plate is ≥5.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0023] The present invention discloses a high-strength alloy liner and its manufacturing method, wherein the casting raw material ratio is reasonable and the casting has high strength.

[0024] 1. After the main plate passes through the wall of the ball mill, the tightening mechanism is driven to firmly fix the main plate to the ball mill. Instead of installing and fixing the main plates one by one, they can be fastened or loosened in a row at the same time, which greatly improves the loading and unloading efficiency of the alloy liner.

[0025] 2. After the wear reaches its limit, only the surface layer needs to be replaced, without replacing the entire structure, thus saving materials;

[0026] 3. The live magnetic block, when connected to electricity, attracts some of the magnetically attracted metal powder particles in the material through magnetic force, which adhere to the surface of the plate and the surface of the material being ground, forming a protective layer and effectively increasing the service life of the alloy liner.

[0027] 4. Equipped with a central shim to provide shock absorption and heat insulation, reducing the use of high-density metals, reducing the weight of the alloy liner plate, and facilitating handling and installation;

[0028] 5. The grinding and stirring blades can rotate relative to the main body of the sector plate, which helps to grind and stir the materials on the side and in contact with it, thereby improving the grinding effect and working efficiency of the ball mill.

[0029] 6. The edges of the motherboard are equipped with movable sealing strips to automatically seal the seams between adjacent motherboard pieces during installation. Attached Figure Description

[0030] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0031] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0032] Figure 3 This is a top view of the structure of the present invention;

[0033] Figure 4 for Figure 3 Enlarged view of point B in the middle;

[0034] Figure 5 This is a three-dimensional structural diagram of the motherboard chip of the present invention;

[0035] Figure 6 for Figure 5 Enlarged view of point C in the middle;

[0036] Figure 7 This is a three-dimensional structural diagram of the gasket in this invention;

[0037] Figure 8 This is a schematic diagram of the layout of the magnetizing block of the present invention;

[0038] Figure 9This is a schematic diagram of the front structure of the side plate of the present invention;

[0039] Figure 10 This is a schematic diagram of the back structure of the side plate of the present invention;

[0040] Figure 11 for Figure 10 Schematic diagram of the cross section along the DD direction;

[0041] Figure 12 This is a flowchart of a method for manufacturing a high-strength alloy liner according to the present invention.

[0042] In the diagram: 1. Main board plate; 1a. Surface plate; 1b. Middle pad; 1c. Bottom plate; 1d. Movable sealing strip; 1d-1. Arc-edge strip; 1d-2. Flat-edge strip; 1e. Magnetizing block; 1e-1. Iron core; 1e-2. Spiral coil; 1f. Quick-fastening post; 1f-1. Positive half-post; 1f-2. Negative half-post; 1f-3. Insulating sheet; 1g. Positive and negative conductive sheets; 2. Side plate; 2a. Grinding agitator; 2b. Rotating shaft; 2c. Rotating dropper; 3. Tightening mechanism; 3a. Tightening strip; 3b. Tightening inclined block; 3c. Bidirectional reversible push-pull device; 3c-1. Screw; 3c-2. Screw block. Detailed Implementation

[0043] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. In the description of the present invention, it should be noted that the terms "upper", "lower", "middle", "inner", "outer", etc., indicate the direction or positional relationship based on the direction or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the technical solutions of the present invention and simplifying the description, and do not indicate or imply that the structure or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0044] Please refer to the following: Figures 1 to 11 A high-strength alloy liner plate includes a main plate 1 and side plates 2. The main plate 1 includes a surface plate 1a, a middle pad 1b, and a bottom plate 1c stacked sequentially. Movable sealing strips 1d are provided on the edges of the three plates. The middle pad 1b is a soft body with a dot matrix of magnetic blocks 1e embedded in it. A quick-fastening post 1f is provided on the side of the surface plate 1a near the inner wall of the ball mill. The quick-fastening post 1f passes through holes opened on the middle pad 1b and the bottom plate 1c. A tightening mechanism 3 is provided at the end of the quick-fastening post 1f that is not connected to the surface plate 1a. The middle pad 1b not only makes the distance between the surface plate 1a and the bottom plate 1c variable, which facilitates the tightening and fixing of the main plate 1 on the ball mill wall, but also provides shock absorption and heat insulation functions, reduces the use of high-density metals, reduces the weight of the alloy liner plate, and facilitates handling and installation.

[0045] The side plate 2 includes a fan-shaped plate body, on which a rotatable grinding agitator 2a is provided. The side of the grinding agitator 2a near the main plate 1 is uneven and non-flat. The grinding agitator 2a is connected to a rotating shaft 2b that passes through the fan-shaped plate body and a rotating dropper 2c is connected to the other side of the fan-shaped plate body. The center of gravity of the rotating dropper 2c is outside the central axis of the rotating shaft 2b. The grinding agitator 2a and the rotating dropper 2c move synchronously. Multiple side plates 2 are arranged around the side of the ball mill. When the ball mill rotates, it rotates the side plates 2. Under the action of gravity, the rotating dropper 2c causes the grinding agitator 2a to rotate relative to the fan-shaped plate body, which produces a grinding and stirring effect on the material it contacts.

[0046] The tightening mechanism 3 includes two tightening bars 3a that clamp the quick-fastening column 1f in the middle. Tightening inclined blocks 3b are arranged opposite each other on the two tightening bars 3a. The two inclined blocks 3b, which are from different tightening bars 3a, clamp the conical block at the end of the quick-fastening column 1f in the middle. The ends of the two tightening bars 3a on the same side are connected to a bidirectional reversible push-pull device 3c. The quick-fastening column 1f is set through the wall of the ball mill. The tightening mechanism 3 is set on the outer surface of the ball mill. After a row of main plates 1 passes through the wall of the ball mill, the tightening mechanism 3 is driven to work, so that the main plates 1 can be firmly fixed to the ball mill. This means that the main plates 1 do not need to be tightened to the wall of the ball mill one by one, but can be tightened or loosened quickly and simultaneously in a row, which greatly improves the loading and unloading efficiency of the alloy liner.

[0047] Because when the main board plate 1 is installed on the ball mill, there will be gaps between adjacent pieces. These gaps need to be filled with materials such as cement. If they are not filled, the powder of the material being ground will gradually become embedded and accumulate during the operation of the ball mill, causing trouble for the cleaning of the ball mill and the replacement of the liner. Therefore, a movable sealing strip 1d is set on the edge of the main board plate 1. The movable sealing strip 1d includes an arc edge strip 1d-1 and a flat edge strip 1d-2 that are partially exposed outside the main board plate 1. The arc edge strip 1d-1 is elastically connected to the middle pad 1b, and the flat edge strip 1d-2 is elastically connected to any one or both of the surface plate 1a and the bottom plate 1c. The flat-edge rib 1d-2 has a triangular cross-section, with its two beveled surfaces respectively contacting the surface piece 1a and the bottom piece 1c. The parts of the surface piece 1a and the bottom piece 1c that contact the flat-edge rib 1d-2 are provided with beveled edges. When the alloy liner of the present invention is installed on the ball mill, as the surface piece 1a and the bottom piece 1c move closer to each other, the beveled edges squeeze the flat-edge rib 1d-2 to move towards the periphery of the main plate 1, thus automatically filling the gap between adjacent main plates 1. The arc-edge rib 1d-1 not only forms a seal between adjacent main plates 1, but also forms a seal between the main plate 1 and the side plate 2.

[0048] Specifically, to achieve the controllable fixing and loosening function of the tightening mechanism 3 on the main plate 1, the bidirectional reversible push-pull device 3c includes a screw 3c-1 and two screw blocks 3c-2 connected one-to-one with the tightening bar 3a. The two screw blocks 3c-2 are misaligned to clamp the screw 3c-1 in the middle. The screw 3c-1 includes two spiral bars with opposite directions and respectively connects to the two screw blocks 3c-2. Driving the screw 3c-1 to rotate causes the screw blocks 3c-2 to move based on two parallel straight lines, thereby enabling the tightening bar 3a to achieve the same movement. The tightening bar 3a is connected to the outer wall of the ball mill through a linear slide rail. The closest set of inclined tightening blocks 3b with opposite inclined surfaces contact and squeeze the quick-fastening column 1f, which can achieve the goal of pulling the quick-fastening column 1f outward with the surface plate 1a, tightening and fixing the main plate 1 on the inner wall of the ball mill. In addition, because positive and negative conductivity is required, the two spiral bars are insulated from each other.

[0049] The magnetic block 1e includes an iron core 1e-1 and a spiral coil 1e-2 surrounding it. Positive and negative conductive plates 1g are connected to both ends of the spiral coil 1e-2. The quick-fastening post 1f includes electrically isolated positive and negative half-posts 1f-1 and 1f-2, with an insulating plate 1f-3 sandwiched between them. The positive and negative conductive plates 1g are aligned polarity-wise to connect the semi-cylindrical bodies of the positive and negative half-posts 1f-1 and 1f-2. The semi-conical heads of the positive and negative half-posts 1f-1 and 1f-2 are electrically connected to their respective tightening wedges 3b. The tightening wedges 3b are electrically connected to the connected tightening strip 3a, which is connected to the positive and negative terminals of an external power supply. The power transmission passes through tightening bar 3a, tightening inclined block 3b, positive half-pillar 1f-1 / negative half-pillar 1f-2, positive and negative conductive sheet 1g, and spiral coil 1e-2. The energized magnetic block 1e attracts some magnetically attracted metal powder particles through magnetic force, which adhere to the surface of the surface sheet 1a in contact with the material being ground, forming a protective layer. This layer is non-fixed and has a certain degree of fluidity and changeability, effectively increasing the service life of the alloy liner. At the same time, the electromagnetism method allows for flexible and controllable presence or absence of magnetic force. If permanent magnets are directly connected or embedded in the liner, the presence or absence of magnetic force in the main plate 1 cannot be controlled as needed, making the use and cleaning of the ball mill inconvenient and increasing the individual weight of the alloy liner. The ball mill also consumes a lot of energy during rotation.

[0050] Combined Figure 12 As shown, this technical solution also discloses a method for manufacturing a high-strength alloy liner, comprising the following main steps:

[0051] Step 1: Heat and melt the metal, then add alloying components and mix. The resulting mixture should contain the following proportions: 0.8%-1.0% C, 0.6%-1.2% Si, 15%-20% Mn, 0.6%-0.8% Mo, 1.2%-1.6% Mg, 1.8%-2.5% Cr, 1.3%-2.0% V, 0.2%-1.6% Nb, 1.2%-2.5% W, 0.5%-2.0% Ti, and 0.1%-0.3% [other components not specified in the original text]. The N, S≤0.03%, P≤0.05%, and the remainder is Fe and unavoidable impurities. The above composition results in high casting strength and is suitable for alloy liner production. The surface plate 1a and the bottom plate 1c are cast using a mold. The volume of the bottom plate 1c does not exceed ⅓ of the volume of the surface plate 1a. Most of the material is used for the surface plate 1a, which is in direct contact with the material being worn, to maximize the thickness of this layer. After heat treatment, beveled edges are milled on the long straight edge.

[0052] Step 2: Wind the enameled spiral coil 1e-2 around the iron core 1e-1 and position it in the rubber injection mold. Each spiral coil 1e-2 is connected to the positive and negative conductive plates 1g. Inject hot melt rubber. The positive and negative conductive plates 1g are partially exposed through the opening of the cooled and formed middle pad 1b. The positive and negative conductive plates 1g will then be connected to the positive half-pillar 1f-1 and the negative half-pillar 1f-2 according to their polarities.

[0053] Step 3: Connect the flat edge strip 1d-2 to any one or both of the surface sheet 1a and the bottom sheet 1c through a stretchable elastic element. The positive electrode half-pillar 1f-1 and the negative electrode half-pillar 1f-2 sandwich the insulating sheet 1f-3 and pass through the bottom sheet 1c and the middle pad 1b in sequence to connect with the surface sheet 1a.

[0054] Step 4: Connect screw block 3c-2 to one end of tightening bar 3a, adjust the relative position of the two tightening bars 3a, engage the helical teeth of screw block 3c-2 and screw 3c-1, and connect the two tightening bars 3a to the linear slide rail respectively;

[0055] Step 5: Forge a grinding agitator 2a with one side uneven. With this side facing the main plate 1, connect a free-form rotating shaft 2b that runs through the main wall of the fan-shaped plate of the side plate 2. Connect a cast or cut rotating dropper 2c to the end of the rotating shaft 2b that is not connected to the grinding agitator 2a. The molecular structure of the forged part is more compact, which can withstand higher pressure and make the grinding agitator 2a have a longer service life.

[0056] An insulating ring is installed in the opening of the bottom plate 1c to isolate the positive half-pillar 1f-1 and the negative half-pillar 1f-2 that have passed through. The relative position adjustment of the two tightening strips 3a must meet the following requirements: the two screw blocks 3c-2 are not in contact. When the drive screw 3c-1 rotates in a certain direction, the distance between the two screw blocks 3c-2 is shortened. The two tightening strips 3a move in parallel and in opposite directions. The two inclined tightening blocks 3b clamp and squeeze the conical end of the quick-fastening column 1f. When the main plate 1 is installed, the quick-fastening column 1f passes through the wall of the ball mill, and the conical head end is exposed. The tightening mechanism 3 is driven to work. The tightening blocks 3b contact and squeeze the quick-fastening column 1f. The surface plate 1a moves closer to the bottom plate 1c. The middle pad 1b between them is squeezed and expands outward. The movable sealing strip 1d seals the joint between adjacent main plates 1.

[0057] The rotating shaft 2b is connected to the side plate 2 by a bearing. The rotating dropper 2c is manufactured by casting or cutting sheet metal. Each side plate 2 has ≥5 grinding agitators 2a. Under the action of gravity, the rotating dropper 2c causes the grinding agitators 2a to rotate relative to the main body of the fan-shaped plate and act on the material in contact with it. Each side plate 2 has sufficient effective grinding area and fully stirs the material being ground, thereby improving the grinding effect and working efficiency of the ball mill.

[0058] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. For those skilled in the art, various changes, modifications or additions made without departing from the concept of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A high-strength alloy liner, characterized in that: The system includes a main plate (1) and a side plate (2). The main plate (1) includes a surface plate (1a), a middle pad (1b), and a bottom plate (1c) stacked in sequence. The edges of the three plates are provided with movable sealing strips (1d). The middle pad (1b) is a soft body with a dot matrix embedded in it and a magnetic block (1e). The surface plate (1a) near the inner wall of the ball mill is provided with a protruding quick-fastening post (1f). The quick-fastening post (1f) passes through the holes opened on the middle pad (1b) and the bottom plate (1c). A tightening mechanism (3) is provided at the end of the quick-fastening post (1f) that is not connected to the surface plate (1a). The side plate (2) includes a fan-shaped plate body, on which a rotatable grinding agitator (2a) is provided. The grinding agitator (2a) is connected to a rotating shaft (2b) that passes through the fan-shaped plate body and a rotating dropper (2c) is connected to the other side of the fan-shaped plate body. The center of gravity of the rotating dropper (2c) is outside the central axis of the rotating shaft (2b). The grinding agitator (2a) and the rotating dropper (2c) move synchronously. The tightening mechanism (3) includes two tightening bars (3a) that clamp the quick-fastening post (1f) in the middle. Tightening inclined blocks (3b) are arranged opposite each other on the two tightening bars (3a). The two inclined blocks (3b) from different tightening bars (3a) clamp the conical block at the end of the quick-fastening post (1f) in the middle. The ends of the two tightening bars (3a) on the same side are connected to a bidirectional reversible push-pull device (3c).

2. The high-strength alloy liner according to claim 1, characterized in that: The movable sealing strip (1d) includes an arc-edge strip (1d-1) and a flat-edge strip (1d-2) partially exposed outside the main board piece (1). The arc-edge strip (1d-1) is elastically connected to the middle gasket (1b), and the flat-edge strip (1d-2) is elastically connected to either or both of the surface piece (1a) and the bottom piece (1c). The flat-edge strip (1d-2) has a triangular cross-section, with its two inclined surfaces respectively contacting the surface piece (1a) and the bottom piece (1c). The parts of the surface piece (1a) and the bottom piece (1c) that contact the flat-edge strip (1d-2) are provided with beveled edges.

3. The high-strength alloy liner according to claim 2, characterized in that: The bidirectional reversible push-pull device (3c) includes a screw (3c-1) and two screw blocks (3c-2) that are connected one-to-one with the tightening bar (3a). The two screw blocks (3c-2) are misaligned to clamp the screw (3c-1) in the middle. The screw (3c-1) includes two spiral bars with opposite spiral directions and are respectively matched with the two screw blocks (3c-2). The two spiral bars are insulated from each other.

4. A high-strength alloy liner according to claim 3, characterized in that: The magnetizing block (1e) includes an iron core (1e-1) and a spiral coil (1e-2) surrounding it. The two ends of the spiral coil (1e-2) are respectively connected to positive and negative conductive plates (1g). The quick-fastening post (1f) includes an electrically isolated positive half-post (1f-1) and a negative half-post (1f-2). An insulating plate (1f-3) is sandwiched between the positive half-post (1f-1) and the negative half-post (1f-2). The positive and negative conductive plates (1g) are connected by polarity to conduct the semi-cylindrical bodies of the positive half-pillar (1f-1) and the negative half-pillar (1f-2). The semi-conical heads of the positive half-pillar (1f-1) and the negative half-pillar (1f-2) are electrically connected to the tightening wedges (3b) that are in contact with each other. The tightening wedges (3b) are electrically connected to the tightening strips (3a) that are connected to them. The tightening strips (3a) are connected to the positive and negative terminals of the external power supply.

5. A high-strength alloy liner according to claim 4, characterized in that: The quick-fastening column (1f) is installed through the wall of the ball mill, and the tightening mechanism (3) is installed on the outer surface of the ball mill; the tightening strip (3a) is connected to the outer wall of the ball mill by a linear slide rail.

6. A method for manufacturing a high-strength alloy liner, used to manufacture a high-strength alloy liner as described in claim 5, characterized in that: include: S1: Heat and melt the molten metal, add alloy components and mix. The mixed components are: 0.8%-1.0% C, 0.6%-1.2% Si, 15%-20% Mn, 0.6%-0.8% Mo, 1.2%-1.6% Mg, 1.8%-2.5% Cr, 1.3%-2.0% V, 0.2%-1.6% Nb, 1.2%-2.5% W, 0.5%-2.0% Ti, 0.1%-0.3% N, S≤0.03%, P≤0.05%, with the remainder being Fe and unavoidable impurities. Cast the surface sheet (1a) and bottom sheet (1c) using a mold. After heat treatment, mill the beveled edge on the long straight edge. S2: Wrap the enameled spiral coil (1e-2) around the iron core (1e-1), position it in the rubber injection mold, and make each spiral coil (1e-2) connected to the positive and negative conductive sheet (1g). Inject hot melt rubber, and the positive and negative conductive sheet (1g) partially exposes the opening of the cooled and formed middle pad (1b). S3: Connect the flat-edge rib (1d-2) to either or both of the surface sheet (1a) and the bottom sheet (1c) through a stretchable elastic element. The positive electrode half-pillar (1f-1) and the negative electrode half-pillar (1f-2) sandwich the insulating sheet (1f-3) and pass through the bottom sheet (1c) and the middle pad (1b) in sequence to connect with the surface sheet (1a). S4: Connect the screw block (3c-2) to one end of the tightening bar (3a), adjust the relative position of the two tightening bars (3a), mesh the helical teeth of the screw block (3c-2) and the screw (3c-1), and connect the two tightening bars (3a) to the linear slide rail respectively; S5: Forge a grinding agitator (2a) with one side uneven, with the side facing the main plate (1), and connect a free-type rotating shaft (2b) that runs through the main wall of the fan-shaped plate of the side plate (2), and connect a cast or cut rotating dropper (2c) to the end of the rotating shaft (2b) that is not connected to the grinding agitator (2a).

7. The method for manufacturing a high-strength alloy liner according to claim 6, characterized in that: An insulating ring is provided in the opening of the bottom plate (1c) to isolate the positive half-post (1f-1) and the negative half-post (1f-2) that have passed through it.

8. The method for manufacturing a high-strength alloy liner according to claim 6, characterized in that: The relative position adjustment of the two tightening bars (3a) must meet the following requirements: the two screw blocks (3c-2) are not in contact. When the drive screw (3c-1) rotates in a certain direction, the distance between the two screw blocks (3c-2) shortens. The two tightening bars (3a) move in parallel and in opposite directions. The two inclined tightening blocks (3b) with opposite inclined surfaces clamp and squeeze the conical end of the fastening column (1f).

9. The method for manufacturing a high-strength alloy liner according to claim 6, characterized in that: The rotating shaft (2b) is connected to the side plate (2) by a bearing. The rotating drop plate (2c) is manufactured by casting or plate cutting. The number of grinding and stirring plates (2a) on each side plate (2) is ≥5.

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