High magnetic permeability and low coercive force and extremely thin oriented silicon steel and its production process

Abstract

The application discloses a kind of high magnetic permeability low coercivity extremely thin oriented silicon steel and its production process, including memory metal layer between the pressure surface of magnetic permeability low coercivity oriented silicon steel sheet and corrosion-resistant layer, heating layer, the corrosion-resistant layer is fixedly connected with a plurality of internal elastic pressure layer with rigid projection, and rigid projection is fixedly connected with elastic pressure layer inner wall and has internal elastic bag that stores low-temperature evaporation liquid, the elastic bag props open rigid projection and elastic pressure layer to form heat exchange cavity, and the outer surface of elastic pressure layer is provided with a plurality of heat dissipation holes that are communicated with heat exchange cavity, the present application is set to the shock absorption and buffering of high magnetic permeability low coercivity oriented silicon steel sheet by memory metal layer and elastic pressure layer, improve the pressure performance of high magnetic permeability low coercivity extremely thin oriented silicon steel, and by the setting of rigid projection, elastic bag and heat dissipation hole, elastic pressure layer is positioned and supported, contact area is reduced and cooling, prolong the service life of elastic pressure layer.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of silicon steel, in particular to a high-permeability low-coercivity extremely thin oriented silicon steel and a production process thereof. BACKGROUND

[0002] The oriented electrical steel, also known as cold-rolled oriented silicon steel, refers to a cold-rolled electrical steel with a certain regularity and direction of crystal organization and containing 2.9% to 3.5% Si. The electrical steel, also known as silicon steel sheet, is an important soft magnetic alloy indispensable to the power, electronic and military industries, and is also the largest metal functional material. The electrical steel is mainly used as the core of various motors, generators and transformers. Its production process is complex, and the manufacturing technology is strict. The production technology of the electrical steel sheet and the product quality are important indicators for measuring the development level of special steel production and technology in a country. At present, reducing the thickness of the finished product is one of the main methods to realize the low iron loss of the oriented silicon steel. However, the reduction of the thickness of the finished product will reduce the compression resistance of the oriented silicon steel. SUMMARY

[0003] The present application aims to provide a high-permeability low-coercivity extremely thin oriented silicon steel and a production process thereof to solve the problems in the background.

[0004] To achieve the above-mentioned purpose, the present application provides the following technical scheme:

[0005] A high-permeability low-coercivity extremely thin oriented silicon steel comprises a high-permeability low-coercivity oriented silicon steel sheet. A memory metal layer and a heating layer for heating the memory metal to restore it are arranged between the pressure-bearing surface of the high-permeability low-coercivity oriented silicon steel sheet and the corrosion-resistant layer. A plurality of elastic pressure-bearing layers with rigid protrusions inside are fixedly connected to the end surface of the corrosion-resistant layer away from the high-permeability low-coercivity oriented silicon steel sheet. The lower end surface of the rigid protrusion is fixedly connected to the corrosion-resistant layer. An elastic capsule for storing low-temperature evaporation liquid inside is fixedly connected between the upper end of the rigid protrusion and the inner wall of the elastic pressure-bearing layer. The elastic capsule expands the rigid protrusion and the elastic pressure-bearing layer to form a heat exchange cavity. A plurality of heat dissipation holes are arranged on the outer surface of the elastic pressure-bearing layer and are in communication with the heat exchange cavity.

[0006] Preferably, the corrosion-resistant layer is made of polytetrafluoroethylene material.

[0007] Preferably, the memory metal layer is located between the heating layer and the high-permeability low-coercivity oriented silicon steel sheet, and the high-permeability low-coercivity oriented silicon steel sheet and the memory metal layer are fixedly adhered through a wear-resistant layer.

[0008] Preferably, the wear-resistant layer is made of a silicon-aluminum alloy material.

[0009] Preferably, the heating layer is a nano-graphene material, and both ends of the heating layer are electrically connected with an external power source through wires.

[0010] Preferably, a semiconductor strain resistance with resistance reduced under external force compression is mounted on the heating layer, and the heating layer and the wires are electrically connected through the semiconductor strain resistance.

[0011] Preferably, the heating layer and the corrosion-resistant layer are fixedly adhered through an insulating layer.

[0012] Preferably, the insulating layer is made of glass fiber material.

[0013] Preferably, the outer surface of the elastic pressure-bearing layer is coated with a wear-resistant coating layer made of silicon-aluminum alloy material.

[0014] A production process for the high-permeability low-coercivity extremely thin oriented silicon steel comprises the following steps:

[0015] A, sequentially passing through the asynchronous rolling, degreasing, heat treatment, rapid cooling, coating the insulating layer, drying and sintering, and collecting the strip to make the high-permeability low-coercivity oriented silicon steel sheet;

[0016] B, sequentially mounting the memory metal layer, the heating layer and the corrosion-resistant layer on the pressure-bearing surface of the high-permeability low-coercivity oriented silicon steel sheet;

[0017] C, fixing and adhering a plurality of rigid protrusions with elastic capsules on the end surface of the corrosion-resistant layer away from the high-permeability low-coercivity oriented silicon steel sheet, and wrapping the elastic pressure-bearing layer outside the rigid protrusions.

[0018] Compared with the prior art, the high-permeability low-coercivity extremely thin oriented silicon steel and the production process thereof have the following beneficial effects:

[0019] The high-permeability low-coercivity extremely thin oriented silicon steel and the production process thereof improve the pressure-bearing performance of the high-permeability low-coercivity extremely thin oriented silicon steel by setting the memory metal layer and the elastic pressure-bearing layer to provide shock absorption and buffering for the high-permeability low-coercivity oriented silicon steel sheet, and prolong the service life of the elastic pressure-bearing layer by setting the rigid protrusions, the elastic capsules and the heat dissipation holes to limit and support the elastic pressure-bearing layer, reduce the contact area and cool down. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the application;

[0021] Figure 2 It is a local enlarged sectional view of the application;

[0022] Figure 3 It is a schematic diagram of the elastic capsule expansion in Figure 2

[0023] Figure 4 ​For Figure 3 Enlarged schematic view of the elastic pressure bearing layer and the rigid protrusion.

[0024] In the figure: 1 high permeability low coercivity oriented silicon steel sheet, 2 corrosion resistant layer, 3 memory metal layer, 4 heating layer, 5 rigid protrusion, 6 elastic pressure bearing layer, 7 elastic capsule, 8 heat dissipation hole, 9 insulation layer, 10 wear-resistant layer, 11 semiconductor strain resistance, 12 wire, 13 wear-resistant coating. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0026] Please refer to Figures 1-4 The present application provides a technical solution:

[0027] A high permeability low coercivity extremely thin oriented silicon steel, comprising a high permeability low coercivity oriented silicon steel sheet 1, a wear-resistant layer 10 is sprayed on the pressure bearing surface of the high permeability low coercivity oriented silicon steel sheet 1, a memory metal layer 3 is fixedly attached to the side of the wear-resistant layer 10 away from the high permeability low coercivity oriented silicon steel sheet 1, the memory metal layer 3 is compressed to absorb impact potential under external force compression, thereby buffering and damping the high permeability low coercivity oriented silicon steel sheet 1, achieving the effect of improving the compression resistance of the high permeability low coercivity oriented silicon steel sheet 1, the wear-resistant layer 10 arranged between the high permeability low coercivity oriented silicon steel sheet 1 and the memory metal layer 3 has a protective effect on the high permeability low coercivity oriented silicon steel sheet 1, avoiding the problem of the memory metal layer 3 wearing away the high permeability low coercivity oriented silicon steel sheet 1;

[0028] The side of the memory metal layer 3 away from the high permeability low coercivity oriented silicon steel sheet 1 is fixedly attached with a heating layer 4, when the memory metal layer 3 is deformed by external impact, the heating layer 4 works and heats the memory metal layer 3, so that the memory metal layer 3 rebounds to restore to the original state after the external force acting on the memory metal layer 3 disappears, so as to facilitate the memory metal layer 3 to absorb impact potential next time, in addition, the memory metal layer 3 is arranged between the high permeability low coercivity oriented silicon steel sheet 1 and the heating layer 4, reducing the heat transfer effect of the heating layer 4 to the high permeability low coercivity oriented silicon steel sheet 1, avoiding the problem that the high permeability low coercivity oriented silicon steel sheet 1 receives too much heat and is heated, which adversely affects the normal work of the high permeability low coercivity oriented silicon steel sheet 1, the side of the heating layer 4 away from the memory metal layer 3 is coated with a corrosion resistant layer 2, the arrangement of the corrosion resistant layer 2 has the effect of isolating the external environment and avoiding corrosion;

[0029] The corrosion-resistant layer 2 is made of polytetrafluoroethylene material, which is generally called "non-stick coating" or "easy-to-clean material". This material is inert to most chemicals and solvents, resistant to strong acids and bases, water and various organic solvents, and almost insoluble in all solvents, with good corrosion resistance. The memory metal layer 3 is made of a mixture of different structural elements, such as nickel-titanium alloy. The memory metal layer 3 will deform under external force and recover its original shape under certain temperature conditions. The wear-resistant layer 10 is made of silicon-aluminum alloy material. In aluminum-silicon alloy with silicon content exceeding the eutectic point (silicon 11.7%), the silicon particles can significantly improve the wear resistance of the alloy, with good wear resistance.

[0030] As an embodiment, the heating layer 4 is made of nano-graphene material, and the side of the heating layer 4 away from the memory metal layer 3 is pasted with an insulating layer 9 made of glass fiber material. The glass fiber material has good insulation performance, improving the safety of the heating layer 4 during power-on operation. In this embodiment, the corrosion-resistant layer 2 is applied to the side of the insulating layer 9 away from the heating layer 4. The heating layer 4 is installed with a semiconductor strain resistance 11, and the heating layer 4 is electrically connected to the external power source through the semiconductor strain resistance 11 and a wire 12. When the high-permeability low-coercivity oriented silicon steel sheet 1 is subjected to external force, the semiconductor strain resistance 11 is also subjected to external force. In this embodiment, the heating layer 4 is fixedly connected with the semiconductor strain resistance 11 at both ends, and the outer side of the semiconductor strain resistance 11 is flush with the outer side of the memory metal layer 3 and the insulating layer 9, i.e. the semiconductor strain resistance 11 is clamped between the memory metal layer 3 and the insulating layer 9. Of course, the semiconductor strain resistance 11 can be fixedly installed on the end surface of the heating layer 4 connected with the memory metal layer 3 or the insulating layer 9. When the semiconductor strain resistance 11 is not subjected to external force, it is in a high resistance state, so that the heating layer 4 is almost in an open circuit state and does not heat. When the high-permeability low-coercivity oriented silicon steel sheet 1 is hit by external force, the impact potential is first transmitted to the insulating layer 9, then to the semiconductor strain resistance 11 and the heating layer 4 through the insulating layer 9, and then to the memory metal layer 3 and the high-permeability low-coercivity oriented silicon steel sheet 1. When the semiconductor strain resistance 11 is subjected to external force, the resistance decreases, so that the heating layer 4 has current passing through and heating.

[0031] The corrosion-resistant layer 2 is fixedly connected to the end face of the high-permeability low-coercivity oriented silicon steel sheet 1, and a plurality of elastic pressure-bearing layers 6 with rigid protrusions 5 inside are fixedly connected to the end face of the corrosion-resistant layer 2, and the lower end face of the rigid protrusion 5 is fixedly connected to the corrosion-resistant layer 2, and the upper end of the rigid protrusion 5 is fixedly connected to the inner wall of the elastic pressure-bearing layer 6, and an elastic bag 7 for storing low-temperature evaporative liquid is fixedly connected to the inner wall of the elastic pressure-bearing layer 6, and the evaporative liquid can be dichloromethane or other low-boiling-point liquid, the elastic bag 7 expands the rigid protrusion 5 and the elastic pressure-bearing layer 6 to form a heat exchange cavity, and a plurality of heat dissipation holes 8 are formed in the outer surface of the elastic pressure-bearing layer 6 and are in communication with the heat exchange cavity, and in the process of using the high-permeability low-coercivity extremely thin oriented silicon steel, external objects hit and rub against the elastic pressure-bearing layer 6, and the elastic pressure-bearing layer 6 is elastically deformed to reduce the shock and buffering effect, and the overall compression resistance and friction resistance of the high-permeability low-coercivity extremely thin oriented silicon steel are improved, and in addition, the rigid protrusion 5 supports the elastic pressure-bearing layer 6 to prevent the elastic pressure-bearing layer 6 from being damaged due to excessive elastic deformation, and the elastic pressure-bearing layer 6 is further coated with a wear-resistant coating 13 made of a silicon-aluminum alloy, which protects the elastic pressure-bearing layer 6 and prolongs the service life of the elastic pressure-bearing layer 6.

[0032] When external objects continuously rub against the elastic pressure-bearing layer 6, the elastic pressure-bearing layer 6 generates heat due to friction and accumulates heat, which is transferred to the evaporative liquid in the elastic bag 7, and the evaporative liquid vaporizes and expands to push the elastic bag 7 to expand the elastic pressure-bearing layer 6, so that the contact area between the pressure-bearing layer and the external objects is reduced, and the wear and tear of the elastic pressure-bearing layer 6 due to friction is reduced, and the elastic pressure-bearing layer 6 is protected, and the service life of the elastic pressure-bearing layer 6 is prolonged, and in addition, the elastic pressure-bearing layer 6 is expanded to enlarge the heat dissipation holes 8, and the heat exchange effect between the elastic pressure-bearing layer 6 and the outside environment is improved, and the elastic pressure-bearing layer 6 is cooled, and in the same way, when the heating layer 4 generates heat, the heat is transferred to the evaporative liquid in the elastic bag 7, and the evaporative liquid vaporizes and expands to push the elastic bag 7 to expand the elastic pressure-bearing layer 6, so that the heat dissipation holes 8 are enlarged, and the heat exchange effect between the elastic pressure-bearing layer 6 and the outside environment is improved, and the heat generated by the heating layer 4 is discharged to the outside environment, and the problem of heat accumulation in the high-permeability low-coercivity extremely thin oriented silicon steel is avoided.

[0033] A production process for the high-permeability low-coercivity extremely thin oriented silicon steel comprises the following steps:

[0034] A, sequentially passing through the asynchronous rolling, degreasing, heat treatment, rapid cooling, coating insulation layer, drying sintering, and coiling collection processes to make the high-permeability low-coercivity oriented silicon steel sheet 1;

[0035] B, sequentially installing the memory metal layer 3, the heating layer 4, and the corrosion-resistant layer 2 on the pressure-bearing surface of the high-permeability low-coercivity oriented silicon steel sheet 1;

[0036] C, several rigid protrusions 5 with elastic capsules 7 are fixed and adhered on the end surface of the corrosion-resistant layer 2 away from the high-permeability low-coercivity oriented silicon steel sheet 1, and the elastic pressure-bearing layer 6 is wrapped outside the rigid protrusions 5.

[0037] While embodiments of the application have been shown and described, it is to be understood that the embodiments described are merely divergences of the principles and spirit of the application and that numerous modifications, changes, substitutions, and alterations can be made thereto without departing from the spirit and scope of the application as defined by the appended claims and their equivalents.

Claims

1. A high permeability low coercivity very thin grain-oriented silicon steel comprising high permeability low coercivity grain-oriented silicon steel sheets, characterized in that: The pressure bearing surface of the high-permeability low-coercivity oriented silicon steel sheet is provided with a memory metal layer and a heating layer for heating the memory metal to restore it, and the corrosion-resistant layer is fixedly connected with a plurality of elastic pressure bearing layers with rigid protrusions inside on the end surface away from the high-permeability low-coercivity oriented silicon steel sheet, and the lower end surface of the rigid protrusion is fixedly connected to the corrosion-resistant layer, and the upper end of the rigid protrusion is fixedly connected with an elastic bag inside the elastic pressure bearing layer for storing low-temperature evaporation liquid, the elastic bag expands the rigid protrusion and the elastic pressure bearing layer to form a heat exchange cavity, and a plurality of heat dissipation holes are formed in the outer surface of the elastic pressure bearing layer and communicated with the heat exchange cavity.

2. The high permeability, low coercive force, very thin grain-oriented silicon steel of claim 1, wherein: The corrosion-resistant layer is made of polytetrafluoroethylene material.

3. The high permeability, low coercive force, very thin grain-oriented silicon steel of claim 1, wherein: The memory metal layer is located between the heating layer and the high-permeability low-coercivity oriented silicon steel sheet, and the high-permeability low-coercivity oriented silicon steel sheet and the memory metal layer are fixedly adhered by a wear-resistant layer.

4. The high permeability, low coercive force, very thin grain-oriented silicon steel of claim 3, wherein: The wear-resistant layer is made of silicon-aluminum alloy material.

5. The high permeability, low coercive force, very thin grain-oriented silicon steel of claim 3, wherein: The heating layer is made of nano-graphene material, and the two ends of the heating layer are electrically connected with an external power source through wires.

6. The high permeability, low coercive force, very thin grain-oriented silicon steel of claim 5, wherein: The heating layer is provided with a semiconductor strain resistance whose resistance decreases under external pressure, and the heating layer and the wires are electrically connected through the semiconductor strain resistance.

7. The high permeability, low coercive force, very thin grain-oriented silicon steel of claim 5, wherein: The heating layer and the corrosion-resistant layer are fixedly adhered by an insulating layer.

8. The high permeability, low coercive force, very thin grain-oriented silicon steel of claim 7, wherein: The insulating layer is made of glass fiber material.

9. The high permeability, low coercive force, very thin grain-oriented silicon steel of claim 1, wherein: The outer surface of the elastic pressure bearing layer is coated with a wear-resistant coating of silicon-aluminum alloy material.

10. A production process for the high permeability low coercivity very thin grain-oriented silicon steel according to any one of claims 1 to 9, characterized in that, The method comprises the following steps: A. High-permeability low-coercivity oriented silicon steel sheet is made by the following steps: asynchronous rolling, degreasing, heat treatment, rapid cooling, coating an insulating layer, drying and sintering, and coiling collection; B. Memory metal layer, heating layer and corrosion-resistant layer are sequentially installed on the pressure bearing surface of the high-permeability low-coercivity oriented silicon steel sheet; C. A plurality of rigid protrusions with elastic bags are fixedly adhered on the end surface of the corrosion-resistant layer away from the high-permeability low-coercivity oriented silicon steel sheet, and the elastic pressure bearing layer is wrapped outside the rigid protrusions.

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