CN114086035A - Production method of 1050 aluminum/50W 800 non-oriented electrical steel plate for electromagnetic shielding - Google Patents
Production method of 1050 aluminum/50W 800 non-oriented electrical steel plate for electromagnetic shielding Download PDFInfo
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- CN114086035A CN114086035A CN202111146383.XA CN202111146383A CN114086035A CN 114086035 A CN114086035 A CN 114086035A CN 202111146383 A CN202111146383 A CN 202111146383A CN 114086035 A CN114086035 A CN 114086035A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/02—Alloys based on aluminium with silicon as the next major constituent
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/38—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling sheets of limited length, e.g. folded sheets, superimposed sheets, pack rolling
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
- C22F1/043—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with silicon as the next major constituent
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0073—Shielding materials
- H05K9/0081—Electromagnetic shielding materials, e.g. EMI, RFI shielding
- H05K9/0088—Electromagnetic shielding materials, e.g. EMI, RFI shielding comprising a plurality of shielding layers; combining different shielding material structure
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/38—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling sheets of limited length, e.g. folded sheets, superimposed sheets, pack rolling
- B21B2001/386—Plates
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Abstract
The invention provides a production method of 1050 aluminum/50W 800 non-oriented electrical steel plate for electromagnetic shielding, which comprises S1), respectively placing rolled aluminum coils and steel coils on two uncoilers for uncoiling; s2), uncoiling, and cleaning by adopting HCl and NaOH solutions respectively; s3), mechanically processing the surface to be combined of the aluminum plate and the steel plate for 10-15S by a rotary wire brush method; s4), placing the aluminum plate and the steel plate in an acetone solution for ultrasonic cleaning for 2-3 min; s5), pre-stretching or pre-compressing the surface-treated aluminum plate or steel plate, S6), welding the edges of the pre-stressed aluminum plate or steel plate; s7), carrying out preheating treatment on the welded steel aluminum plate before rolling; s8), and then annealing treatment is carried out in a continuous annealing furnace, the invention combines the metal aluminum plate and the steel plate together by hot rolling and rolling, the interface shear strength is more than or equal to 100MPa, and the repeated bending times is more than or equal to 10 times.
Description
Technical Field
The invention relates to the technical field of composite materials, in particular to a production method of a 1050 aluminum/50W 800 non-oriented electrical steel plate for electromagnetic shielding.
Background
With the rapid development of science and technology, a new technical revolution is actively carried out in the world based on three basic disciplines of information, life and materials, which promotes the human material culture to a new development stage, and the material discipline as one of the three basic disciplines can bear an important and new historical mission.
The layered metal composite material is a novel material prepared by utilizing a composite technology to realize firm metallurgical bonding of two or more metals with different physical, chemical and mechanical properties on an interface. Although each layer of metal still keeps the respective original characteristics, the physical, chemical and mechanical properties of the layered metal composite material are much better than those of single metal, and the obtained composite plate has comprehensive properties which cannot be possessed by any component. The effective combination of electrical conductivity, thermal conductivity, corrosion resistance and mechanical property not only improves the comprehensive performance of the material, but also provides better conditions for reasonably selecting the material and reducing the cost.
The electromagnetic wave interference not only affects the normal operation of electronic devices, but also is harmful to human health. Isolating radiation with high performance electromagnetic shielding materials is an effective way to protect electronic devices and equipment from electromagnetic interference. Conductivity is an important factor determining the shielding effectiveness of the material, so that high-conductivity metal materials are always the first choice for preparing high-performance shielding materials. In recent years, with the rapid development of 5G communication technology and chip manufacturing technology, electronic components have evolved toward miniaturization, lightness, thinness, high integration and multiple functions, which also puts higher demands on electromagnetic shielding materials. The traditional metal materials are metal frames, metal sheets and screens made of copper, iron, nickel or aluminum alloy and the like. However, further applications of these metal materials in the field of electromagnetic shielding are limited by their inherent disadvantages, such as high density, high rigidity, etc. The composite material of the electrical steel and the aluminum, which appears at home and abroad in recent years, solves a series of problems of metal materials in the application of electromagnetic shielding and provides a good method for producing the electromagnetic shielding material in batch at low cost.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a method for producing a 1050 aluminum/50W 800 non-oriented electrical steel plate for electromagnetic shielding, and the material produced by the method has good interface combination and higher magnetic conductivity.
The technical scheme of the invention is as follows: a production method of 1050 aluminum/50W 800 non-oriented electrical steel plate for electromagnetic shielding comprises the following steps:
s1), respectively placing the rolled 1050 aluminum coil and the 50W800 non-oriented electrical steel coil on two uncoilers for uncoiling;
s2), cleaning the surface of the uncoiled 50W800 non-oriented electrical steel coil by using 10-15% HCl solution, cleaning the 1050 aluminum coil by using 8-12% NaOH solution, removing residual HCl and NaOH solution and products on the surface in clean water, and squeezing water by using a squeezing roller;
s3), mechanically treating the surfaces to be combined of the 1050 aluminum coil and the 50W800 non-oriented electrical steel coil treated in the step S2) for 10-15S by using a rotary wire brush method, wherein the polishing direction is along the rolling direction of the composite plate;
s4), then placing the 1050 aluminum coil and the 50W800 non-oriented electrical steel coil processed in the step S3) into an acetone solution for ultrasonic cleaning for 2-3min, and blowing and drying the products with hot air;
s5), pre-stretching or pre-compressing the 1050 aluminum coil and the 50W800 non-oriented electrical steel coil after surface treatment according to the metal characteristics, wherein the stretching and compressing directions are along the rolling direction and the vertical rolling direction;
s6), welding the edges of the 1050 aluminum coil and the 50W800 non-oriented electrical steel coil subjected to the pre-stress treatment in the step S5);
s7), performing preheating treatment before rolling on the welded 1050 aluminum coil and the 50W800 non-oriented electrical steel coil, wherein the preheating temperature is 450-500 ℃; 1050 aluminum coils and 50W800 non-oriented electrical steel coils are taken out of the heating furnace and then enter a rolling mill for hot rolling compounding, and the total reduction is 35-45%;
s8), then annealing treatment is carried out in a continuous annealing furnace, the annealing temperature is 600-.
Preferably, the 1050 aluminum roll comprises the following components:
Si 0.1-0.2wt％；
Cu≤0.05wt％；
Mg≤0.05wt％；
Zn≤0.05wt％；
Ti≤0.03wt％；
V≤0.05wt％；
Fe≤0.20wt％；
the balance of Al and inevitable impurities.
Preferably, the 50W800 non-oriented electrical steel coil comprises the following components:
C≤0.005wt％；
Si 0.6-1.0wt％；
Mn 0.2-0.4wt％；
P<0.015wt％；
S<0.008wt％；
AL0.15-0.25wt％；
the balance of Fe and inevitable impurities.
Preferably, in step S5), the stress type application principle is that the hard-to-deform metal applies tensile stress, the pre-stretching deformation amount is 2-5%, and the strain rate is 0.3-0.8 mm/min.
Preferably, in step S8), the composite board has an interfacial shear strength of not less than 100MPa and a repeated bending number of not less than 10.
The invention has the beneficial effects that:
1. according to the invention, through reasonable process design, the metal aluminum plate and the non-oriented electrical steel are combined together through a hot rolling and rolling compounding method, and through heat treatment after rolling, the mutual diffusion among metal atoms is promoted and other compounding mechanisms are initiated, so that the bonding strength of the composite plate is obviously enhanced;
2. the interface shear strength of the aluminum/steel composite plate prepared by the method is more than or equal to 100MPa, and the repeated bending times are more than or equal to 10 times;
3. the rolling technology of the invention is easy to realize large-scale industrial production, does not have the problem of environmental pollution caused by electroplating and physical and chemical method coating, is a preparation and processing technology of the aluminum/steel metal laminated composite material with very good development potential, reduces the production cost, shortens the delivery period, saves social resources, has interface combination performance and higher magnetic conductivity, and can produce aluminum/steel composite metal plates for electromagnetic shielding with good plate shape and high dimensional precision in batch.
Detailed Description
The following further illustrates embodiments of the invention:
example 1
The embodiment provides a production method of a 1050 aluminum/50W 800 non-oriented electrical steel plate for electromagnetic shielding, wherein the 1050 aluminum plate comprises the following chemical components: 0.15 wt% of Si, 0.02 wt% of Cu, 0.03 wt% of Mg, 0.03 wt% of Zn, 0.01 wt% of Ti, less than or equal to 0.03 wt% of V, 0.15 wt% of Fe, and the balance of Al and inevitable impurities;
chemical composition of 50W800 non-oriented electrical steel: 0.005 wt% of C, 0.62 wt% of Si, 0.4 wt% of Mn, 0.010 wt% of P, 0.005 wt% of S, 0.15 wt% of AL, and the balance of Fe and inevitable impurities.
The production method comprises the following steps:
s1), respectively placing the rolled 1050 aluminum coil and the 50W800 non-oriented electrical steel coil on two uncoilers for uncoiling;
s2), cleaning the surface of the uncoiled steel plate by using a 10% HCl solution, cleaning an aluminum plate by using a 10% NaOH solution, removing residual HCl and NaOH solutions and products on the surface in clear water, and squeezing water by using a squeezing roller;
s3), mechanically processing the surface to be combined of the aluminum plate and the steel plate for 10S by using a rotary steel wire brush, wherein the grinding direction is along the rolling direction of the composite plate;
s4), then placing the mixture into an acetone solution for ultrasonic cleaning for 2min, and blowing and drying the mixture with hot air after the mixture is taken out;
s5), pre-stretching or pre-compressing the surface-treated aluminum plate and steel plate according to the metal characteristics, wherein the stretching and compressing directions are along the rolling direction and the vertical rolling direction; the pre-stretching deformation is 3 percent, and the strain rate is 0.3 mm/min;
s6), welding the edges of the aluminum plate and the steel plate which are subjected to the prestress treatment;
s7), before rolling and compounding, firstly, preheating the welded steel aluminum plate at the preheating temperature of 450 ℃; the steel aluminum plate is taken out of the heating furnace and then enters a rolling mill for hot rolling compounding, and the total reduction is 45%;
s8), annealing in a continuous annealing furnace at 650 deg.C for 6min, and flattening, finishing and inspecting the final product in a flattening machine set. The interface shear strength of the aluminum/steel composite plate is detected to be 115MPa, and the repeated bending times are 12 times.
Example 2
The embodiment provides a production method of a 1050 aluminum/50W 800 non-oriented electrical steel plate for electromagnetic shielding, wherein the 1050 aluminum plate comprises the following chemical components: 0.12 wt% of Si, 0.03 wt% of Cu, 0.02 wt% of Mg, 0.03 wt% of Zn, 0.01 wt% of Ti, less than or equal to 0.03 wt% of V, 0.16 wt% of Fe, and the balance of Al and inevitable impurities;
chemical composition of 50W800 non-oriented electrical steel: 0.003 wt% of C, 0.85 wt% of Si, 0.2 wt% of Mn, 0.010 wt% of P, 0.005 wt% of S, 0.25 wt% of AL, and the balance of Fe and inevitable impurities.
The production method comprises the following steps:
s1), respectively placing the rolled 1050 aluminum coil and the 50W800 non-oriented electrical steel coil on two uncoilers for uncoiling;
s2), cleaning the surface of the uncoiled steel plate by using a 12% HCl solution, cleaning an aluminum plate by using an 8% NaOH solution, removing residual HCl and NaOH solutions and products on the surface in clear water, and squeezing water by using a squeezing roller;
s3), carrying out mechanical treatment on the surface to be combined of the aluminum plate and the steel plate for 12S by using a rotary steel wire brush, wherein the grinding direction is along the rolling direction of the composite plate;
s4), then placing the mixture into an acetone solution for ultrasonic cleaning for 3min, and blowing and drying the mixture with hot air after the mixture is taken out;
s5), pre-stretching or pre-compressing the surface-treated aluminum plate and steel plate according to the metal characteristics, wherein the stretching and compressing directions are along the rolling direction and the vertical rolling direction; the pre-stretching deformation is 5 percent, and the strain rate is 0.8 mm/min;
s6), welding the edges of the aluminum plate and the steel plate which are subjected to the prestress treatment;
s7), before rolling and compounding, firstly, preheating the welded steel aluminum plate at the preheating temperature of 450 ℃; the steel aluminum plate is taken out of the heating furnace and then enters a rolling mill for hot rolling compounding, and the total reduction is 35%;
s8), annealing in a continuous annealing furnace at 680 ℃ for 5min, and flattening, finishing and inspecting the finished product in a flattening machine set. And detecting that the interface shear strength of the aluminum/steel composite plate is 120MPa, and the repeated bending times are 11 times.
Example 3
The embodiment provides a production method of a 1050 aluminum/50W 800 non-oriented electrical steel plate for electromagnetic shielding, wherein the 1050 aluminum plate comprises the following chemical components: 0.18 wt% of Si, 0.01 wt% of Cu, 0.03 wt% of Mg, 0.03 wt% of Zn, 0.02 wt% of Ti, less than or equal to 0.03 wt% of V, 0.15 wt% of Fe, and the balance of Al and inevitable impurities;
chemical composition of 50W800 non-oriented electrical steel: 0.005 wt% of C, 0.93 wt% of Si, 0.3 wt% of Mn, 0.010 wt% of P, 0.005 wt% of S, 0.16 wt% of AL, and the balance of Fe and inevitable impurities.
The production method comprises the following steps:
s1), respectively placing the rolled 1050 aluminum coil and the 50W800 non-oriented electrical steel coil on two uncoilers for uncoiling;
s2), cleaning the surface of the uncoiled steel plate by using a 15% HCl solution, cleaning an aluminum plate by using a 12% NaOH solution, removing residual HCl and NaOH solutions and products on the surface in clear water, and squeezing water by using a squeezing roller;
s3), mechanically processing the surface to be combined of the aluminum plate and the steel plate for 10S by using a rotary steel wire brush, wherein the grinding direction is along the rolling direction of the composite plate;
s4), then placing the mixture into an acetone solution for ultrasonic cleaning for 2min, and blowing and drying the mixture with hot air after the mixture is taken out;
s5), pre-stretching or pre-compressing the surface-treated aluminum plate and steel plate according to the metal characteristics, wherein the stretching and compressing directions are along the rolling direction and the vertical rolling direction; the pre-stretching deformation is 2 percent, and the strain rate is 0.6 mm/min;
s6), welding the edges of the aluminum plate and the steel plate which are subjected to the prestress treatment;
s7), before rolling and compounding, firstly, preheating the welded steel aluminum plate at the preheating temperature of 500 ℃; the steel aluminum plate is taken out of the heating furnace and then enters a rolling mill for hot rolling compounding, and the total reduction is 40%;
s8), annealing in a continuous annealing furnace at 700 ℃ for 3min, and flattening, finishing and inspecting the finished product in a flattening machine set. And detecting that the interface shear strength of the aluminum/steel composite plate is 110MPa, and the repeated bending times are 12 times.
Example 4
The embodiment provides a production method of a 1050 aluminum/50W 800 non-oriented electrical steel plate for electromagnetic shielding, wherein the 1050 aluminum plate comprises the following chemical components: 0.18 wt% of Si, 0.02 wt% of Cu, 0.03 wt% of Mg, 0.03 wt% of Zn, 0.01 wt% of Ti, less than or equal to 0.03 wt% of V, 0.12 wt% of Fe, and the balance of Al and inevitable impurities;
chemical composition of 50W800 non-oriented electrical steel: 0.004 wt% of C, 0.95 wt% of Si, 0.2 wt% of Mn, 0.005 wt% of P, 0.006 wt% of S, 0.15 wt% of AL, and the balance of Fe and inevitable impurities.
The production method comprises the following steps:
s1), respectively placing the rolled 1050 aluminum coil and the 50W800 non-oriented electrical steel coil on two uncoilers for uncoiling;
s2), cleaning the surface of the uncoiled steel plate by using a 12% HCl solution, cleaning an aluminum plate by using a 10% NaOH solution, removing residual HCl and NaOH solutions and products on the surface in clear water, and squeezing water by using a squeezing roller;
s3), carrying out mechanical treatment on the surface to be combined of the aluminum plate and the steel plate for 12S by using a rotary steel wire brush, wherein the grinding direction is along the rolling direction of the composite plate;
s4), then placing the mixture into an acetone solution for ultrasonic cleaning for 2min, and blowing and drying the mixture with hot air after the mixture is taken out;
s5), pre-stretching or pre-compressing the surface-treated aluminum plate and steel plate according to the metal characteristics, wherein the stretching and compressing directions are along the rolling direction and the vertical rolling direction; the pre-stretching deformation is 2 percent, and the strain rate is 0.6 mm/min;
s6), welding the edges of the aluminum plate and the steel plate which are subjected to the prestress treatment;
s7), before rolling and compounding, firstly, preheating the welded steel aluminum plate at 480 ℃; the steel aluminum plate is taken out of the heating furnace and then enters a rolling mill for hot rolling compounding, and the total reduction is 36%;
s8), annealing in a continuous annealing furnace at 680 ℃ for 4.5min, and flattening, finishing and inspecting the finished product in a flattening machine set. The interface shear strength of the aluminum/steel composite plate is detected to be 105MPa, and the repeated bending times are 11 times.
The foregoing embodiments and description have been presented only to illustrate the principles and preferred embodiments of the invention, and various changes and modifications may be made therein without departing from the spirit and scope of the invention as hereinafter claimed.
Claims (5)
1. A production method of 1050 aluminum/50W 800 non-oriented electrical steel plate for electromagnetic shielding is characterized by comprising the following steps:
s1), respectively placing the rolled 1050 aluminum coil and the 50W800 non-oriented electrical steel coil on two uncoilers for uncoiling;
s2), cleaning the surface of the uncoiled 50W800 non-oriented electrical steel coil by using 10-15% HCl solution, cleaning the 1050 aluminum coil by using 8-12% NaOH solution, removing residual HCl and NaOH solution and products on the surface in clean water, and squeezing water by using a squeezing roller;
s3), mechanically treating the surfaces to be combined of the 1050 aluminum coil and the 50W800 non-oriented electrical steel coil treated in the step S2) for 10-15S by using a rotary wire brush method, wherein the polishing direction is along the rolling direction of the composite plate;
s4), then placing the 1050 aluminum coil and the 50W800 non-oriented electrical steel coil processed in the step S3) into an acetone solution for ultrasonic cleaning for 2-3min, and blowing and drying the products with hot air;
s5), pre-stretching or pre-compressing the 1050 aluminum coil and the 50W800 non-oriented electrical steel coil after surface treatment according to the metal characteristics, wherein the stretching and compressing directions are along the rolling direction and the vertical rolling direction;
s6), welding the edges of the 1050 aluminum coil and the 50W800 non-oriented electrical steel coil subjected to the pre-stress treatment in the step S5);
s7), performing preheating treatment before rolling on the welded 1050 aluminum coil and the 50W800 non-oriented electrical steel coil, wherein the preheating temperature is 450-500 ℃; 1050 aluminum coils and 50W800 non-oriented electrical steel coils are taken out of the heating furnace and then enter a rolling mill for hot rolling compounding, and the total reduction is 35-45%;
s8), then annealing treatment is carried out in a continuous annealing furnace, the annealing temperature is 600-.
2. The method for producing 1050 Al/50W 800 non-oriented electrical steel plate for electromagnetic shielding according to claim 1, wherein the method comprises the following steps: the 1050 aluminum coil comprises the following components:
Si 0.1-0.2wt％；
Cu≤0.05wt％；
Mg≤0.05wt％；
Zn≤0.05wt％；
Ti≤0.03wt％；
V≤0.05wt％；
Fe≤0.20wt％；
the balance of Al and inevitable impurities.
3. The method for producing 1050 Al/50W 800 non-oriented electrical steel plate for electromagnetic shielding according to claim 1, wherein the method comprises the following steps: the 50W800 non-oriented electrical steel coil comprises the following components:
C≤0.005wt％；
Si 0.6-1.0wt％；
Mn 0.2-0.4wt％；
P<0.015wt％；
S<0.008wt％；
AL0.15-0.25wt％；
the balance of Fe and inevitable impurities.
4. The method for producing 1050 Al/50W 800 non-oriented electrical steel plate for electromagnetic shielding according to claim 1, wherein the method comprises the following steps: in the step S5), the principle of stress type application is that tensile stress is applied to the metal which is difficult to deform, the pre-stretching deformation amount is 2-5%, and the strain rate is 0.3-0.8 mm/min.
5. The method for producing 1050 Al/50W 800 non-oriented electrical steel plate for electromagnetic shielding according to claim 1, wherein the method comprises the following steps: in the step S8), the interface shear strength of the composite board is more than or equal to 100MPa, and the repeated bending times are more than or equal to 10 times.
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| CN202111146383.XA CN114086035A (en) | 2021-09-28 | 2021-09-28 | Production method of 1050 aluminum/50W 800 non-oriented electrical steel plate for electromagnetic shielding |
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2021
- 2021-09-28 CN CN202111146383.XA patent/CN114086035A/en active Pending
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| GB616798A (en) * | 1944-09-20 | 1949-01-27 | Joseph Kinney Jr | Improvements in or relating to composite multi-ply metal strip and method of making same |
| CN1586751A (en) * | 2004-08-27 | 2005-03-02 | 东北大学 | Hot roller rolling method for stainless steel/aluminium composite plate |
| CN110695089A (en) * | 2019-10-23 | 2020-01-17 | 太原理工大学 | Rolling method of bimetal composite plate with good plate shape |
| CN110935728A (en) * | 2019-12-13 | 2020-03-31 | 瓯锟科技温州有限公司 | Preparation method of layered wear-resistant light steel-aluminum composite board |
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| 朱兆华等: "不锈钢/铝/不锈钢轧制复合工艺的研究", 《铝加工》 * |
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