WO2019144251A1

WO2019144251A1 - Metal magnetic lining formed by reinforcing protective layers

Info

Publication number: WO2019144251A1
Application number: PCT/CN2018/000053
Authority: WO
Inventors: 魏明安; 武文建; 吴建明
Original assignee: 北京环磨科技有限公司; 北京环磨矿冶能效技术研究院有限公司; 北京耐磨标准技术有限公司
Priority date: 2018-01-29
Filing date: 2018-01-29
Publication date: 2019-08-01
Also published as: CN109195707A

Abstract

Provided is a metal magnetic lining formed by reinforcing protective layers. The metal magnetic lining is used for protecting an inner surface of a mill cylinder, and a ferromagnetic metal surface of an apparatus in contact with materials during material conveying, and reducing the abrasion of the surfaces. The lining is composed of a housing (1), magnetic block groups (2) and an adhesive. The housing (1) is made of non-magnetically conducting metallic materials, has one surface being a mounting surface composed of multiple cubic boxes (3), the boxes (3) being arranged to form a horizontally and perpendicularly aligned array, and has the other surface being a working surface on which poloidal rib plates (4) and horizontal rib plates (5) encircle shallow grooves (6). The magnetic block groups (2) are mounted in the boxes (3), and the polarity direction in which the magnetic block groups (2) are mounted in the boxes (3) enables the polarities of the magnetic block groups (2) in the same row to be the same, and the polarities of the magnetic block groups (2) in two adjacent rows to be opposite. The poloidal rib plates (4) on the working surface of the housing (1) are located in a surface of a symmetric centre of a row of boxes (3) in which the magnetic block groups (2) with the same polarities are mounted. By means of the arrangement of the poloidal rib plates (4), protective layers (11) dwelling in the shallow grooves (6) encircled by the poloidal rib plates (4) and the horizontal rib plates (5) remain continuous in a region with the highest magnetic field intensity, such that the protective layers (11) are more firmly attracted in the shallow grooves (6), thus better protecting a working surface of the magnetic lining and prolonging the service life of the magnetic lining.

Description

[Correction according to Rule 26 04.04.2018] A metal magnetic liner formed by a reinforced protective layer

Technical field

The invention relates to a grinding machine barrel for grinding minerals of metal minerals, industrial minerals, chemical minerals, energy minerals and building materials, and a ferromagnetic metal surface for protecting materials from contact with materials during material transportation, thereby reducing the wear of these surfaces A metal magnetic liner formed by a reinforcing protective layer.

Background technique

The structure of the conventional metal magnetic backing plate (12) is as shown in Figs. 13 to 15 or Figs. 16 to 18 . The metal magnetic backing plate shown in Figs. 13 to 15 is composed of a casing (8), a magnetic block group (2), and an adhesive. The outer casing (8) is made of a non-magnetic metal material, one side is a mounting surface, and is composed of a plurality of cubic lattices (3), each grid (3) is arranged in an array of horizontal and vertical alignment; the other side is a working surface, and the The ribs (4) and the transverse ribs (5) enclose a shallow groove (6). The magnetic block group (2) is loaded and firmly bonded in the lattice (3) with an adhesive, and the magnetic block group (2) is loaded into the polarity direction of the lattice (3) so that the same row of magnetic block groups (2) The polarities are the same, the polarities of the adjacent two rows of magnetic block groups (2) are opposite, and the exposed surface of the magnetic block group (2) and the bottom surface of the outer casing (8) are in a plane or slightly concave. The pole ribs (4) extend along the magnetic pole extension direction formed by the row of magnetic block groups (2) having the same polarity, and are formed with the row of magnetic block groups (2) of the lattice (3) having the same polarity The side walls of the magnetic pole length are aligned; the transverse ribs (5) are perpendicular to the pole ribs (4) and perpendicular to the length of the pole formed by the row of magnetic blocks (2) of the lattice (3) having the same polarity The side walls are aligned.

In use, by means of the magnetic field formed by the magnetic block group (2), the magnetic lining plate is adsorbed one by one through the mounting surface on the surface (10) to be protected, the pole ribs (4) and the transverse ribs on the working surface ( 5) The shallow groove (6) is surrounded by a layer of crushed steel balls and ferromagnetic materials to form a protective layer (11) to avoid direct wear on the surface of the casing, thereby prolonging the life of the liner.

In applications where the operating conditions are harsh, it is necessary to embed a hemispherical magnetizer (7) on the working surface of the outer casing (8), as shown in Figures 16-18. In this case, the magnetizer (7) is located at a position corresponding to the center of the lattice (3) on the working surface of the casing (8), that is, shallowly bounded by the pole ribs (4) and the transverse ribs (5). Center position of the slot (6). The magnetizer (7) has excellent magnetic permeability and wear resistance, which can improve the magnetic field strength of the working surface of the lining, thereby improving the firmness of the protective layer (11) and the wear resistance of the outer casing (8).

The operational state of the prior art metal magnetic backing (12) set forth above is shown in Figures 21 and 22. Figure 21 shows the working state of the most basic prior art metal magnetic lining (12), and Figure 22 shows the existing metal magnetic lining of the working surface of the outer casing (8) inlaid with a hemispherical magnet (7) (12). ) work status. Regardless of whether the hemispherical magnetizer (7) is embedded or not, the direction of the magnetic field of the working surface is from the N pole to the S pole, and the position with the highest magnetic field strength is the position of the symmetrical center plane YY between the N pole and the S pole, and the position of the magnetic field strength is the lowest. It is the XX section where the magnetic pole (N pole or S pole) is located. Since the pole rib (4) is located in the YY section with the highest magnetic field strength of the working surface of the magnetic lining, the shallow grooving (6) surrounded by the pole rib (4) and the transverse rib (5) The protective layer (11) is interrupted at the YY section with the highest magnetic field strength. The protective layer (11) has a certain strength by mutual adsorption between the internal magnetic magnetic particles under the magnetic field of the magnetic lining plate, and the stronger the magnetic field strength, the stronger the protective layer (11). Since the transverse rib (5) made of a non-magnetic material is sandwiched between the protective layer (11) in the YY section having the highest magnetic field strength, the magnetic resistance inside the most protective layer (11) which should be formed is increased, which hinders The mutual adsorption between the internal particles of the protective layer (11) weakens the robustness of the protective layer (11), weakens the wear resistance of the magnetic liner, and shortens its service life.

Summary of the invention

In order to solve the problem that the existing metal magnetic lining pole rib (4) is located at the YY section with the highest magnetic field strength on the working surface of the magnetic lining, so as to reside in the pole rib (4) and the transverse rib (5) The protective layer (11) in the shallow groove (6) is interrupted at the YY section with the highest magnetic field strength, which weakens the firmness of the protective layer (11), thereby weakening the wear resistance of the magnetic liner and shortening its service life. Problem, the present invention proposes a metal magnetic backing plate in which a protective layer is formed.

The technical solution adopted by the present invention to solve the technical problem is to make the pole ribs (4) on the working surface of the outer casing (1) be located in a row of lattices (3) equipped with the same magnetic block group (2). Symmetrical center plane.

A metal magnetic backing plate formed by a reinforcing protective layer of the present invention is shown in FIGS. 1 to 12. 1 to 3 show the most basic form of a metal magnetic backing plate formed by a reinforcing protective layer, which is composed of a casing (1), a magnetic block group (2) and an adhesive. The outer casing (1) is made of a non-magnetic metal material, one side is a mounting surface, and is composed of a plurality of cubic lattices (3), each grid (3) is arranged in a horizontally and vertically aligned array; the other side is a working surface, and the The ribs (4) and the transverse ribs (5) enclose a shallow groove (6). Each of the magnetic block groups (2) is formed by adsorbing 1 to 10 magnetic blocks or bonding with an adhesive, the magnetic block material is a permanent magnet material, and the number of the magnetic block groups (2) and the outer casing (1) are latticed ( 3) The same quantity, the outer dimension is slightly smaller than the outer dimension of the lattice (3), a set of magnetic blocks (2) is loaded into each lattice (3) of the outer casing (1), and the magnetic block group is assembled with an adhesive (2) Firmly bonded in the lattice (4), the magnetic block group (2) is loaded into the polarity direction of the lattice (3) so that a row of magnetic block groups (2) arranged along the length of the pole ribs (4) Similarly, the adjacent two rows of magnetic block groups (2) have opposite polarities, and the exposed surface of the magnetic block group (2) and the bottom surface of the outer casing (1) are in a plane or slightly concave. The pole ribs (4) extend in parallel with the extending direction of the magnetic poles formed by the row of magnetic blocks (2) of the same polarity, and are located in a row of lattices (3) of the magnetic block group (2) having the same polarity. The symmetry center plane; the transverse ribs (5) are perpendicular to the pole ribs (4).

In applications where the operating conditions are harsh, it is necessary to embed a hemispherical magnetizer (7) on the working surface of the outer casing (1), as shown in Figures 4-6. In this case, the magnetizer (7) is located at a position corresponding to the center of the lattice (3) on the working surface of the casing (1), at which point the pole rib (4) spans the central longitudinal section of the magnetizer (7).

The transverse ribs (5) serve to strengthen the structural strength of the outer casing (1) and prevent the protective layer (11) from moving in the direction of the magnetic pole to enhance the firmness of the protective layer (11). The position of the transverse ribs (5) does not affect the strength of the magnetic field, so it does not affect the robustness of the protective layer (11). It can be located anywhere along the length of the magnetic pole, its most common position or with the side walls of the lattice (3). Align, or within the transversely symmetrical center plane of the grid (3). A metal magnetic backing plate formed by a reinforcing protective layer of the present invention in a basic form in which the transverse ribs (5) are aligned with the side walls of the lattice (3), as shown in Figs. 1 to 3, inlaid with a hemispherical magnetizer (7) A metal magnetic backing plate formed by a reinforcing protective layer of the present invention is shown in Figs. 4 to 6 . A metal magnetic backing plate formed by a reinforcing protective layer of the present invention in a basic form of a transverse rib (5) in a transversely symmetrical central plane of the lattice (3), as shown in Figs. 7 to 9, a hemispherical magnetizer (7) A metal magnetic backing plate formed by a reinforcing protective layer of the present invention is shown in Figs. 10 to 12 .

The working state of the metal magnetic backing (9) formed by a reinforcing protective layer of the present invention as set forth above is as shown in Figs. 19 and 20. Figure 19 shows the working state of the metal magnetic liner (9) formed by a reinforced protective layer of the most basic invention, and Figure 20 shows the working surface of the outer casing (1) inlaid with a semi-spherical magnetizer (7). An operational state of a metal magnetic backing plate (9) formed by reinforcing a protective layer is invented. Regardless of whether the hemispherical magnetizer (7) is embedded or not, the direction of the magnetic field of the working surface is from the N pole to the S pole, and the position with the highest magnetic field strength is the position of the symmetrical center plane YY between the N pole and the S pole, and the position of the magnetic field strength is the lowest. It is the XX section where the magnetic pole (N pole or S pole) is located. Since the pole rib (4) is located in the XX section with the lowest magnetic field strength of the working surface of the magnetic lining, the shallow rib (6) which resides in the pole rib (4) and the transverse rib (5) The protective layer (11) is kept continuous at the YY section with the highest magnetic field strength, and the magnetic conductive points in the protective layer (11) maintain good mutual adsorption, so that the protective layer (11) achieves the maximum firmness by the high magnetic field strength, thereby The wear resistance of the magnetic liner is enhanced and its service life is extended.

The beneficial effect of the metal magnetic backing plate formed by the reinforcing protective layer of the present invention is that the protective layer (11) residing in the shallow groove (6) surrounded by the pole ribs (4) and the transverse ribs (5) ) Maintaining continuity in the region with the highest magnetic field strength, so that the protective layer (11) is more firmly adsorbed in the shallow groove (6), so that the working surface of the magnetic liner is better protected and the service life of the magnetic liner is prolonged.

In addition, the metal magnetic lining plate formed by the reinforcing protective layer of the invention has the common beneficial effects of the general metal magnetic lining: the magnetic fixing, the bolt is not needed, the installation and maintenance are convenient, the labor intensity of the worker is reduced, and the parking maintenance is reduced. Time, increase the operating rate of the mill; reduce the bolt hole of the end cap and reduce the leakage of the slurry; the quality of the lining plate is light, the power of the mill is reduced, the power consumption is saved, the noise is low, and the operation is reliable.

BRIEF DESCRIPTION OF THE DRAWINGS

1 to 3 are schematic views showing the basic structure of a metal magnetic backing plate formed by reinforcing a protective layer.

Fig. 1 is a cross-sectional view taken along line C-C of Fig. 2;

Fig. 2 is a view taken along the line A in Fig. 1;

Fig. 3 is a cross-sectional view taken along line B-B of Fig. 1;

4 to 6 are schematic views showing the structure of a metal magnetic backing plate formed by a reinforcing protective layer of the present invention in which a hemispherical magnetizer (7) is embedded.

Fig. 4 is a sectional view taken along line F-F of Fig. 5;

Figure 5 is a view taken in the direction of D in Figure 4 .

Fig. 6 is a cross-sectional view taken along line E-E of Fig. 4;

7 to 9 are schematic views showing the structure of a metal magnetic backing plate formed by a reinforcing protective layer of the present invention in which the transverse ribs (5) pass through the center section of the lattice.

Figure 7 is a cross-sectional view taken along line I-I of Figure 8;

Fig. 8 is a view taken in the direction of arrow G of Fig. 7;

Fig. 9 is a cross-sectional view taken along line H-H of Fig. 7;

10 to 12 are structural schematic views of a metal magnetic backing plate formed by a reinforcing protective layer of the present invention in which a transverse rib (5) passes through a center section of a lattice and is embedded with a hemispherical magnetizer (7).

Fig. 10 is a sectional view taken along line L-L of Fig. 11;

Figure 11 is a J-direction view of Figure 10 .

Figure 12 is a cross-sectional view taken along line K-K of Figure 10;

13 to 15 are schematic views showing the basic structure of a conventional metal magnetic backing plate.

Figure 13 is a cross-sectional view taken along line P-P of Figure 14;

Figure 14 is a view taken along line M of Figure 13;

Figure 15 is a cross-sectional view showing the O-O of Figure 13;

16 to 18 are schematic views showing the structure of a conventional metal magnetic backing plate in which a hemispherical magnetizer (7) is embedded.

Figure 16 is a cross-sectional view taken along line T-T of Figure 17;

Figure 17 is a view taken in the direction of Q in Figure 16 .

Figure 18 is a cross-sectional view taken along line R-R of Figure 16;

Fig. 19 is a view showing the working state of a metal magnetic backing plate (9) formed by a reinforcing protective layer of the present invention having a basic structure.

Fig. 20 is a view showing the operation of a metal magnetic backing plate (9) formed by a reinforcing protective layer of the present invention inlaid with a hemispherical magnetizer (7).

Figure 21 is a schematic view showing the working state of a conventional metal magnetic backing plate (12) of a basic structure.

Figure 22 is a schematic view showing the working state of a conventional metal magnetic backing plate (12) in which a hemispherical magnetizer (7) is embedded.

In the drawings: (1) an outer casing of a metal magnetic lining plate formed by reinforcing a protective layer; (2) a magnetic block group; (3) a lattice; (4) a pole rib; (5) a transverse rib; 6) shallow groove; (7) magnetizer; (8) outer casing of the existing metal magnetic liner; (9) a metal magnetic liner formed by the reinforcing protective layer of the present invention; (10) protected device ferromagnetic metal Surface; (11) protective layer; (12) existing metal magnetic liner.

Implementation

[Example 1]

The second section of the overflow ball mill has a specification of Φ3.6m×6.0m. The material is magnetite ore, and the diameter of the steel ball is ≤60mm. A metal magnetic backing plate formed by a reinforcing protective layer of the present invention having a basic structure is shown in FIGS. 1 to 3.

The magnetic backing plate is composed of a casing (1), a magnet block (2) and an adhesive. The outer casing (1) is cast according to the chemical composition of the non-magnetic steel, one side is the mounting surface, and is arranged in two rows and three columns by six cubic lattices (3); the other surface is the working surface, and two poles are ribbed (4) And four transverse ribs (5) enclose a shallow groove (6), the pole ribs (4) are located in the symmetry center plane of each row of lattices (3), the transverse ribs (5) and the pole ribs ( 4) Vertical, aligned with the side walls of the grid (3). Each of the magnetic block groups (2) is composed of two ferrite magnetic blocks adsorbed to each other, and the number of the magnetic block groups (2) is the same as the number of the lattices (3), and is six sets, and the outer shape thereof is slightly smaller than the lattice (3). Dimensions. Each of the lattices (3) is loaded with a set of magnetic block groups (2), and the magnetic block group (2) is firmly bonded in the lattice (3) with an adhesive, and the magnetic block group (2) is loaded into the lattice ( 3) The polarity direction is a row of magnetic block groups (2) exposed to the N pole, and the other row of the magnetic block group (2) is exposed to the S pole. After the bonding is completed, the exposed surface of the magnetic block group (2) and the bottom surface of the outer casing (1) are in a plane or slightly concave.

A metal magnetic backing plate (9) of a reinforcing protective layer of the present invention which is sufficient to cover the inner surface of the barrel of the mill is manufactured in the same manner as described above. The manufactured magnetic lining plate is installed in the ball mill by the magnetic field formed by the magnetic block group (2), and the magnetic lining plate is adsorbed one by one through the mounting surface on the inner surface of the ball mill barrel to be protected, so that each magnetic piece is made. The same magnetic poles of the lining plate are arranged in a row along the axis direction of the ball mill and aligned. The working faces of all the magnetic lining plates form a magnetic field alternately arranged along the circumferences of the ball mill barrel N and S poles, and the magnetic field strength of the center section of each row of magnetic poles is the lowest, N The magnetic field strength at the symmetrical central section between the S poles is the highest. The pole rib (4) is located in the central section of the magnetic pole at the position where the magnetic field strength is the lowest, so that the symmetry center of the shallow groove (6) is located at the symmetrical central section between the N and S poles with the highest magnetic field strength.

When the ball mill is working, the protective layer (11) formed by the magnetite ore and the crushed steel ball with a thickness of 20-30 mm is adsorbed into the shallow groove (6) surrounded by the ribs (4) and the transverse ribs (5). Unlike the existing magnetic lining, the polar rib (4) is located in the central section of the magnetic pole, at the position where the magnetic field strength is the lowest, and the shallow groove (6) is located in the region with the highest magnetic field strength, so the protective layer (11) is more than the existing one. The magnetic liner is stronger and better protected, extending the life of the magnetic liner.

[Example 2]

The second section of the overflow ball mill has a specification of Φ5.0m×6.5m. The material is magnetite ore, and the diameter of the steel ball is ≤60mm. A metal magnetic backing plate formed by a reinforcing protective layer of the present invention incorporating a hemispherical magnetizer (7) is shown in Figs. 4-6.

The magnetic backing plate is composed of a casing (1), a magnet block (2) and an adhesive. First, the magnetizer (7) is cast in accordance with the chemical composition of the wear-resistant magnetic steel, and then the outer casing (1) is cast according to the chemical composition of the non-magnetic steel, and the magnetizer (7) is cast thereon during the casting of the outer casing (1). The heat treatment is carried out using a process suitable for both the outer casing (1) and the magnetizer (7). The outer casing (1) has a mounting surface on one side, and is arranged in two rows and three columns by six cubic lattices (3); the other surface is a working surface, and a magnetizer (7) is cast in the center of each lattice (3), 2 The strip pole ribs (4) are respectively located in the symmetry center plane of the two rows of grids (3), spanning three magnetizers (7). The four transverse ribs (5) are perpendicular to the pole ribs (4) and aligned with the side walls of the lattice (3), and the pole ribs (4) and the transverse ribs (5) enclose a shallow groove (6). Each of the magnetic block groups (2) is composed of two ferrite magnetic blocks adsorbed to each other, and the number of the magnetic block groups (2) is the same as the number of the lattices (3), and is six sets, and the outer shape thereof is slightly smaller than the lattice (3). Dimensions. Each of the lattices (3) is loaded with a set of magnetic block groups (2), and the magnetic block group (2) is firmly bonded in the lattice (3) with an adhesive, and the magnetic block group (2) is loaded into the lattice ( 3) The polarity direction is a row of magnetic block groups (2) exposed to the N pole, and the other row of the magnetic block group (2) is exposed to the S pole. After the bonding is completed, the exposed surface of the magnetic block group (2) and the bottom surface of the outer casing (1) are in a plane or slightly concave.

A metal magnetic backing plate (9) formed of a reinforcing protective layer of the present invention in an amount sufficient to cover the inner surface of the mill barrel was produced in the same manner as described above. The manufactured magnetic lining plate is installed in the ball mill by the magnetic field formed by the magnetic block group (2), and the magnetic lining plate is adsorbed one by one through the mounting surface on the inner surface of the ball mill barrel to be protected, so that each magnetic piece is made. The same magnetic poles of the lining plate are arranged in a row along the axis direction of the ball mill and aligned. The working faces of all the magnetic lining plates form a magnetic field alternately arranged along the circumferences of the ball mill barrel N and S poles, and the magnetic field strength of the center section of each row of magnetic poles is the lowest, N The magnetic field strength at the symmetrical central section between the S poles is the highest. The pole rib (4) is located in the central section of the magnetic pole at the position where the magnetic field strength is the lowest, so that the symmetry center of the shallow groove (6) is located at the symmetrical central section between the N and S poles with the highest magnetic field strength.

When the ball mill is working, the protective layer (11) formed by the magnetite ore and the crushed steel ball with a thickness of 20-30 mm is adsorbed into the shallow groove (6) surrounded by the ribs (4) and the transverse ribs (5). Unlike the existing magnetic lining, the polar rib (4) is located in the central section of the magnetic pole, at the position where the magnetic field strength is the lowest, and the shallow groove (6) is located in the region with the highest magnetic field strength, so the protective layer (11) is more than the existing one. The magnetic liner is stronger and better protected, extending the life of the magnetic liner. Due to the presence of the magnetizer (7), the magnetic field in the vicinity thereof can be enhanced by its excellent magnetic permeability to increase the adsorption strength of the protective layer (11). At the same time, the magnetizer (7) itself has a high hardness, which can improve the overall wear resistance of the magnetic liner. Therefore, the metal magnetic liner formed by the reinforcing protective layer of the present invention in which the hemispherical magnetizer (7) is embedded has a longer service life than the metal magnetic liner formed by the reinforcing protective layer of the present invention, but the cost thereof is also Higher. The actual selection needs to be determined according to the actual needs of the working conditions.

Industrial applicability

According to the above embodiment, the outer casing (1) and the magnet (7) material, the magnetic block (2), and the adhesive of the metal magnetic liner formed by the reinforcing protective layer are mature materials, and are easy to be marketed. Get on. The outer casing (1) and the magnetizer (7) can be manufactured by a casting method, and the manufacturing process is mature. The magnetic block (2) is placed in the lattice of the outer casing (1) and adhered with an adhesive, that is, the manufacturing is completed, the manufacturing method is simple, and the operation is easy.

The fabricated metal magnetic backing sheet formed by the reinforcing protective layer of the present invention can be used on the wear-resistant surface of the magnetically permeable metal to be protected, such as the surface of the ball mill and the gravel mill barrel or the surface of the ore chute. The installation method is simple, and only the lining plate needs to be adsorbed one by one on the wear-resistant surface of the magnetic conductive metal to be protected.

Since the polar ribs (4) on the working surface of the metal magnetic lining housing (1) formed by the reinforcing protective layer of the present invention are located in a row of lattices (3) of the magnetic block group (2) having the same polarity Within the symmetry center plane, it is therefore located in the section with the lowest magnetic field strength of the pole. This allows the shallow groove (6) surrounded by the pole rib (4) and the transverse rib (5) to be located in the region with the highest magnetic field strength, which avoids the existing magnetic lining pole to the rib in the region with the highest magnetic field strength. In order to hinder the formation of the protective layer (11), the protective layer (11) is stronger than the existing magnetic lining, and can better protect the metal lining.

Extending the life of the metal magnetic lining is the main feature of the metal magnetic lining plate formed by the reinforcing protective layer in the prior art compared with the existing metal magnetic lining plate, and is also the main purpose of its industrial application. In addition, the metal magnetic lining plate formed by the reinforcing protective layer of the invention also has the following industrial application effects of the general magnetic lining: relying on magnetic fixing, no bolts, convenient installation and maintenance, reducing labor intensity of workers; Parking inspection time, improve mill operation rate; reduce end cap bolt holes and reduce slurry leakage; liner quality is light, reduce mill operation power, save power consumption; low noise, reliable operation.

Claims

A metal magnetic lining plate formed by reinforcing a protective layer is made of a casing (1), a magnetic block group (2) and an adhesive, and is characterized by: a pole rib (4) on the working surface of the casing (1) ) lie in the symmetrical center plane of a row of lattices (3) containing the same group of magnetic blocks (2) of the same polarity.
A metal magnetic backing plate formed by a reinforcing protective layer according to claim 1, wherein the outer casing (1) is made of a non-magnetic metal material, and one side is a mounting surface, and a plurality of cubic lattices (3) In the composition, each grid (3) is arranged in an array aligned horizontally and vertically, and the other side is a working surface, which is surrounded by a pole (4) and a transverse rib (5) into a shallow groove (6).
A metal magnetic backing plate formed by a reinforcing protective layer according to claim 1, wherein each of the magnetic block groups (2) is formed by adsorbing one to ten magnetic blocks or bonding with an adhesive, magnetic The block material is a permanent magnet material, the number of the magnetic block group (2) is the same as the number of the lattice (3) of the outer casing (1), the outer shape is slightly smaller than the outer shape of the lattice (3), and each lattice of the outer casing (1) (3) a set of magnetic block groups (2), and the magnetic block group (2) is firmly bonded in the lattice (4) with an adhesive, and the magnetic block group (2) is loaded into the polarity of the lattice (3) The direction is such that a row of magnetic block groups (2) arranged along the pole ribs (4) have the same polarity, and the adjacent two rows of magnetic block groups (2) have opposite polarities.
A metal magnetic backing plate formed by a reinforcing protective layer according to claim 1, wherein a position corresponding to the center of the lattice (3) on the working surface of the outer casing (1) can be embedded with a hemispherical magnetizer (7), which The time pole straddles the rib (4) across the central longitudinal section of the magnetizer (7).
A metal magnetic backing plate formed by a reinforcing protective layer according to claim 1, wherein the transverse ribs (5) can be located at any position on the length of the magnetic pole, the most common position or the lattice (3) The side walls are aligned or within the transversely symmetrical center plane of the lattice (3).