CN114939672B - Manufacturing method for magnetic shielding structural material based on SLM (selective laser deposition) forming - Google Patents

Manufacturing method for magnetic shielding structural material based on SLM (selective laser deposition) forming Download PDF

Info

Publication number
CN114939672B
CN114939672B CN202210400651.4A CN202210400651A CN114939672B CN 114939672 B CN114939672 B CN 114939672B CN 202210400651 A CN202210400651 A CN 202210400651A CN 114939672 B CN114939672 B CN 114939672B
Authority
CN
China
Prior art keywords
weight percent
magnetic shielding
layer
magnetic
slm
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202210400651.4A
Other languages
Chinese (zh)
Other versions
CN114939672A (en
Inventor
杨胶溪
朱清
王泽康
熊发林
杨锋
李冉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Central Iron and Steel Research Institute
Beijing University of Technology
Original Assignee
Central Iron and Steel Research Institute
Beijing University of Technology
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Central Iron and Steel Research Institute, Beijing University of Technology filed Critical Central Iron and Steel Research Institute
Priority to CN202210400651.4A priority Critical patent/CN114939672B/en
Publication of CN114939672A publication Critical patent/CN114939672A/en
Application granted granted Critical
Publication of CN114939672B publication Critical patent/CN114939672B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
    • B22F10/20—Direct sintering or melting
    • B22F10/28—Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y10/00—Processes of additive manufacturing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y70/00—Materials specially adapted for additive manufacturing
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C19/00—Alloys based on nickel or cobalt
    • C22C19/03—Alloys based on nickel or cobalt based on nickel
    • C22C19/05—Alloys based on nickel or cobalt based on nickel with chromium
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/25—Process efficiency

Abstract

A manufacturing method of a magnetic shielding structural material based on SLM (selective laser deposition) belongs to the technical field of laser additive manufacturing. The structure comprises: assembly structure, lightweight layer, magnetic shielding layer. The alloying powder element component Mo used: 1.8 to 9.48 weight percent, V:0.05 to 2.9 weight percent, 0.12 to 7.71 weight percent of Nb, 0.7 to 2.48 weight percent of Al, 1.02 to 3.44 weight percent of Ti, and Cu:0.1 to 3.8 weight percent, co:0.02 to 3.2 weight percent, cr:0.02 to 4.4 weight percent, B:0.01 to 8.45 weight percent, 0.08 to 8.12 weight percent of Si, fe:3.74 to 19.88 weight percent and the balance of Ni. The consumption of printing raw materials is reduced through a dot matrix filling mode, the weight of the magnetic shielding structure body is reduced, and the manufacturing efficiency of the magnetic shielding structure body is improved; the soft magnetic alloy with high magnetic conductivity is obtained by controlling the process conditions, so that the shielding effectiveness of the magnetic shielding structure is improved. The invention finally obtains the magnetic shielding structure with high forming precision, light weight and excellent shielding performance.

Description

Manufacturing method for magnetic shielding structural material based on SLM (selective laser deposition) forming
Technical Field
The invention belongs to the technical field of metal additive manufacturing, and relates to a manufacturing method of a magnetic shielding structural material based on SLM forming.
Background
As a high-precision inertial navigator, a Fiber Optic Gyroscope (FOG) is widely used in the fields of aviation, navigation, aerospace and national defense industry. However, in a practical magnetic field environment, a Fiber Optic Gyroscope (FOG) is affected by a geomagnetic field and surrounding electromagnetic equipment to generate signal drift, so that the accuracy of a sensor is reduced. To solve this practical problem, a magnetic shielding structure is prepared from a high-performance soft magnetic alloy as a raw material for assembly with a Fiber Optic Gyroscope (FOG) to help overcome its application limitations.
The good soft magnetic material has low coercivity (10) 1 -10 3 A/m), high saturation magnetization, high permeability, high curie temperature, low hysteresis loss, low magnetostriction, etc. As a basic functional material with wide application, it is used in almost all devices related to electric power. Many engineering devices such as stepper motors, power transformers, magnetic amplifiers and magnetic shielding structures are involved depending on their application.
The working principle of the magnetic shielding is that the protected device is placed inside the magnetic shielding structure, and the external magnetic field preferentially passes through the magnetic shielding structure with high magnetic permeability to avoid passing through an internal area, so that magnetic field signal interference is isolated. The shielding effectiveness serves as a figure of merit that measures the shielding efficiency of the structure, being the ratio between the magnetic flux density outside the shielding structure and the magnetic flux density inside the shielding portion. The shielding effectiveness is largely dependent on the permeability of the material, wherein high permeability materials can exhibit high shielding effectiveness. By regulating and controlling the element components of the soft magnetic alloy powder and adding a small amount of other elements such as V, nb, B and the like, the soft magnetic structural material with different performance characteristics can be obtained so as to adapt to different engineering application requirements.
The traditional part processing and manufacturing method has the problems of long manufacturing period, limited forming geometric structure, high material cost and the like. Additive Manufacturing (AM) technology is known as a necessary trend in the manufacturing industry, where laser-aided additive manufacturing methods have high dimensional accuracy of metal parts, with products of higher flexibility and integration being designed and manufactured in a unique manner.
In recent years, selective Laser Melting (SLM) has attracted wide attention in constructing complex objects of various metal materials, and the manufactured complex structural parts have incomparable advantages of the traditional manufacturing technology, and along with the leap development of the additive manufacturing technology at home and abroad in the world today, the SLM has wider research and application in the fields of aerospace, national defense and military, industry, biomedical treatment, automobiles and the like. The magnetic shielding structure prepared by the SLM can obtain a formed part with fine grains, complex geometric structure, high density and good magnetic shielding performance.
Disclosure of Invention
The invention provides a manufacturing method of a magnetic shielding structure material based on SLM forming, which mainly aims to obtain a magnetic shielding structure with high forming precision, light weight and excellent shielding performance, and breaks through the limit of engineering application.
The alloy powder for preparing the magnetic shielding structural material by using the SLM comprises the following elemental components: 1.8 to 9.48 weight percent, V:0.05 to 2.9 weight percent, 0.12 to 7.71 weight percent of Nb, 0.7 to 2.48 weight percent of Al, 1.02 to 3.44 weight percent of Ti, and Cu:0.1 to 3.8 weight percent, co:0.02 to 3.2 weight percent, cr:0.02 to 4.4 weight percent, B:0.01 to 8.45 weight percent, 0.08 to 8.12 weight percent of Si, fe:3.74 to 19.88 weight percent and the balance of Ni.
The thickness of the inner layer assembly structure of the magnetic shielding structure is 10-25 mm. The laser power range is 300W-1000W, the scanning speed is 2000-3500 mm/s, the scanning interval is 0.08-0.16 mm, the powder layer thickness is 0.25-0.45 mm, and the scanning mode is 45-90 degrees of rotation of each layer. After each layer of powder is paved, remelting the laser twice along a scanning path to reduce the defect of large-scale interlayer unfused; the preheating temperature of the base plate is 30-200 ℃, argon is introduced into the forming cabin, so that the oxygen content volume is controlled below 0.1%. And finally, manufacturing the inner layer assembly structure based on the SLM, wherein the yield strength is 300-490 MPa, and the tensile strength is 670-810 MPa.
The middle part of the magnetic shielding structure replaces the entity with the lattice design of the face-centered cubic structure to achieve the light weight of the structure as shown in fig. 1. The thickness of the intermediate layer is 10-35 mm, lattice cell structure size 5X 5-30X 30mm 3 The diameter of the rod unit is 0.16-2mm, and the relative density of the filling lattice structure of the middle layer is 60-90%. The laser power range is 100W-800W, the scanning speed is 800-2500 mm/s, the scanning interval is 0.08-0.16 mm, the powder layer thickness is 0.25-0.45 mm, and the scanning mode is that each layer rotates 45-90 degrees. After each layer of powder is paved, remelting the laser twice along a scanning path; the preheating temperature of the substrate is 30 to the wholeArgon is introduced into the forming cabin at 200 ℃ so that the oxygen content volume is controlled below 0.1%. Finally, the intermediate lightweight layer filled with the lattice is manufactured based on the SLM, so that the weight of the whole magnetic shielding structure is successfully reduced by 50-76%.
The thickness of the outer magnetic shielding layer of the magnetic shielding structure is 0.8-6.2 mm. The laser power range is 200W-1000W, the scanning speed is 800-2000 mm/s, the scanning interval is 0.08-0.16 mm, the powder layer thickness is 0.25-0.45 mm, and the scanning mode is that each layer rotates 45-90 degrees. After each layer of powder is paved, remelting the laser twice along a scanning path; the preheating temperature of the base plate is 30-200 ℃, argon is introduced into the forming cabin, so that the oxygen content volume is controlled below 0.1%. The soft magnetic performance of the external magnetic shielding layer structure manufactured based on the SLM is regulated and controlled, the coercive force range is 0.06-6.00 Oe, the saturation magnetic induction intensity range is 6400-9000 Gs, the remanence range is 2000-2600 Gs, and the maximum magnetic permeability is 3600-9800. Finally, the shielding effectiveness of the magnetic shielding body is 49-85 dB.
The magnetic shielding structural material manufactured by adopting the SLM forming has the characteristics of high forming precision, light weight, good soft magnetic performance and excellent shielding performance.
Drawings
FIG. 1 is a schematic view of a magnetic shield structure
FIG. 2 is a hardness distribution of SLM forming
FIG. 3 is a metallographic structure of a SLM forming magnetic shielding layer
FIG. 4 is a hysteresis loop of a SLM forming magnetic shield
FIG. 5 is the magnetic parameters of the SLM forming magnetic shield layer
FIG. 6 is the shielding effectiveness of the SLM shaped magnetic shielding structure
Detailed Description
Example 1
In order to realize the manufacturing method of the magnetic shielding structural material based on the SLM forming, the manufacturing method comprises the following steps:
the alloy powder designed by the SLM forming magnetic shielding structural material comprises the following element components: 1.90wt%, V:0.58wt% of Nb, 1.01wt% of Al, 0.95wt% of Ti, 1.16wt% of Cu:0.24wt%, co:1.08wt%, cr:1.05wt%, B:1.77wt%, si 2.08wt%, fe:5.92wt% with the balance being Ni. Preparing powder by adopting an air atomization method, sieving the powder by using a 200-mesh powder sieve, and weighing according to mass percent. Placing the weighed powder in a ball mill, mixing for 3 hours, and then barreling for standby;
step 1, before printing by using a laser selective melting device, placing the mixed powder in a vacuum drying furnace at 110 ℃ for drying for about 2 hours, and removing moisture to eliminate the influence of the powder quality on the forming quality;
step 2, selecting a nickel-based alloy as a substrate, wiping the surface with alcohol, drying, and placing the substrate horizontally;
step 3, performing three-dimensional modeling of the magnetic shielding structure on computer software and storing the three-dimensional modeling;
in the step 3, the thickness of the inner layer assembly structure is 15mm, the thickness of the middle light layer is 23mm, and the size of the lattice cell structure is designed to be 20 multiplied by 20mm 3 The diameter of the rod unit is 1.2mm, and the relative density of the filling lattice structure of the middle layer is 88%; the thickness of the outer magnetic shielding layer is designed to be 5mm;
step 4, importing the model saved in the step 3 into slicing software to perform model layering slicing treatment and saving;
and 5, importing the model saved in the step 4 into parameter setting software, setting technological parameters such as laser power, scanning speed, scanning strategy and the like, and saving the technological parameters.
The process conditions of the inner layer assembly structure of the SLM forming magnetic shielding structure set in the step 5 are specifically as follows: the laser power was 300W and the scanning speed was 2000mm/s. The process conditions of the light-weight layer of the SLM forming magnetic shielding structure are as follows: the laser power was 100W and the scanning speed was 1000mm/s. The process conditions for setting the outer magnetic shielding layer of the SLM forming magnetic shielding structure are as follows: the laser power was 200W and the scanning speed was 1000mm/s.
The scanning interval set in the step 5 is 0.08mm; the thickness of the powder layer is 0.03mm; the scanning mode is that each layer rotates 45 degrees; after each layer of powder is paved, remelting the laser twice along a scanning path; the preheating temperature of the base plate is 50 ℃, argon is introduced into the forming cabin, so that the oxygen content volume is controlled below 0.1%.
After the SLM is printed successfully, the machine is shut down, cooled and taken out. The substrate is wire-cut along the end face, and the molded sample is separated from the substrate.
The performance of the magnetic test samples formed in this example is tested as follows.
1. Microhardness test
Microhardness test is carried out on the section of the inner layer assembly structure formed by the SLM forming magnetic shielding layer by adopting a Wilson HV type microhardness meter, dotting is carried out every 0.25mm, load is applied for 200gf, loading time is 10s, and the average microhardness of the sample is 251.58 +/-14.9 HV 0.2
2. Magnetic property test
The magnetic performance of the annular sample prepared by the process of forming the magnetic shielding layer by the SLM is tested by adopting a Vibrating Sample Magnetometer (VSM), and the size is as follows: 31mm inside diameter, 42mm outside diameter, height: 5mm. The surface stain was removed by slightly polishing, a hysteresis curve of 300K was generated under a 1T magnetic field to obtain a magnetization curve and a hysteresis loop (B-H) of the sample, and coercive force 0.4371Oe, saturation induction 6459Gs, residual magnetism 2569Gs and maximum permeability 3609 of the molded sample were calculated.
Example 2
In order to realize the manufacturing method of the magnetic shielding structural material based on the SLM forming, the manufacturing method comprises the following steps:
the alloy powder designed by the SLM forming magnetic shielding structural material comprises the following element components: 3.21wt%, V:1.50wt%, nb 0.21wt%, al 1.13wt%, ti 1.96wt%, cu:1.01wt%, co:1.21wt%, cr:1.85wt%, B:0.87wt%, si 1.05wt%, fe:11.02wt% with the balance being Ni. Preparing powder by adopting an air atomization method, sieving the powder by using a 200-mesh powder sieve, and weighing according to mass percent. Placing the weighed powder in a ball mill, mixing for 3 hours, and then barreling for standby;
in order to realize the preparation method based on the SLM forming magnetic shielding structure, the implementation steps are not repeated here in the same place as in the embodiment 1, except that the process conditions of the inner layer assembly structure of the SLM forming magnetic shielding structure are as follows: the laser power was 500W and the scanning speed was 2500mm/s. The process conditions of the light weight layer in the middle of the SLM forming magnetic shielding structure are as follows: the laser power was 300W and the scanning speed was 900mm/s. The process conditions for setting the outer magnetic shielding layer of the SLM forming magnetic shielding structure are as follows: the laser power was 500W and the scanning speed was 1400mm/s. The scanning interval is 0.10mm; the thickness of the powder layer is 0.03mm; the scanning strategy is that each layer rotates 67 degrees, and after each layer of powder is paved, the laser scans once along the path and remelts; the preheating temperature of the substrate is 80 ℃; argon is introduced into the forming cabin, so that the oxygen content volume is controlled below 0.1%.
After the SLM is printed successfully, the machine is shut down, cooled and taken out. The substrate is wire-cut along the end face, and the molded sample is separated from the substrate.
The magnetic test samples formed in this example were then subjected to performance testing.
1. Microhardness test
And (3) performing microhardness test on the section of the inner layer assembly structure of the SLM formed magnetic shielding layer by using a Wilson HV type microhardness meter, dotting every 0.25mm, applying a load of 200gf, and calculating the average microhardness of the sample for 10 s.
2. Magnetic property test
The ring-shaped test sample prepared by the process of forming a magnetic shielding layer by using an SLM is subjected to magnetic performance test by using a Vibrating Sample Magnetometer (VSM), and the size is as follows: 31mm inside diameter, 42mm outside diameter, height: 5mm. And (3) slightly polishing to remove surface stains, generating a hysteresis curve of 300K under a 1T magnetic field to obtain a magnetization curve and a hysteresis loop (B-H) of the sample, and calculating to obtain the coercive force, the saturation induction intensity, the remanence and the maximum permeability of the formed sample.
Example 3
In order to realize the manufacturing method of the magnetic shielding structural material based on the SLM forming, the manufacturing method comprises the following steps:
the alloy powder designed by the SLM forming magnetic shielding structural material comprises the following element components: 4.07wt%, V:1.67wt%, nb 0.41wt%, al 1.23wt%, ti 1.42wt%, cu:1.11wt%, co:2.03wt%, cr:2.01wt%, B:1.09wt%, si 1.39wt%, fe:15.12wt% and the balance Ni. Preparing powder by adopting an air atomization method, sieving the powder by using a 200-mesh powder sieve, and weighing according to mass percent. Placing the weighed powder in a ball mill, mixing for 3 hours, and then barreling for standby;
in order to realize the preparation method based on the SLM forming magnetic shielding structure, the implementation steps are not repeated here in the same place as in the embodiment 1, except that the process conditions of the inner layer assembly structure of the SLM forming magnetic shielding structure are as follows: the laser power was 800W and the scanning speed was 3000mm/s. The process conditions of the light weight layer in the middle of the SLM forming magnetic shielding structure are as follows: the laser power was 600W and the scanning speed was 1200mm/s. The process conditions for arranging the outer magnetic shielding layer of the SLM forming magnetic shielding structure are specifically as follows: the laser power was 700W and the scanning speed was 1600mm/s. The scanning interval is 0.12mm; the thickness of the powder layer is 0.03mm; the scanning strategy is that each layer rotates 90 degrees, and after each layer of powder is paved, the laser scans once along the path and remelts; the preheating temperature of the substrate is 120 ℃; argon is introduced into the forming cabin, so that the oxygen content volume is controlled below 0.1%.
After the SLM is printed successfully, the machine is shut down, cooled and taken out. The substrate is wire-cut along the end face, and the molded sample is separated from the substrate.
The magnetic test samples formed in this example were then subjected to performance testing.
1. Microhardness test
And (3) performing microhardness test on the cross section of the inner layer assembly structure of the SLM forming magnetic shielding layer by using a Wilson HV type microhardness meter, dotting every 0.25mm, applying a load of 200gf, and calculating the average microhardness of the sample for 10 s.
2. Magnetic property test
The ring-shaped test sample prepared by the process of forming a magnetic shielding layer by using an SLM is subjected to magnetic performance test by using a Vibrating Sample Magnetometer (VSM), and the size is as follows: 31mm inside diameter, 42mm outside diameter, height: 5mm. And (3) slightly polishing to remove surface stains, generating a hysteresis curve of 300K under a 1T magnetic field to obtain a magnetization curve and a hysteresis loop (B-H) of the sample, and calculating to obtain the coercive force, saturated magnetic induction intensity, remanence and maximum magnetic permeability of the formed sample.
Example 4
In order to realize the manufacturing method of the magnetic shielding structural material based on the SLM forming, the manufacturing method comprises the following steps:
the alloy powder designed by the SLM forming magnetic shielding structural material comprises the following element components: 5.11wt%, V:2.07wt%, 0.61wt% Nb, 2.04wt% Al, 0.92wt% Ti, cu:1.27wt%, co:2.32wt%, cr:2.41wt%, B:1.22wt%, si 1.79wt%, fe:17.02wt% with the balance being Ni. Preparing powder by adopting an air atomization method, sieving the powder by using a 200-mesh powder sieve, and weighing according to mass percent. Placing the weighed powder in a ball mill, mixing for 3 hours, and then barreling for standby;
in order to realize the preparation method based on the SLM forming magnetic shielding structure, the implementation steps are the same as those of embodiment 1, and are not repeated herein, except that the process conditions for arranging the inner layer assembly structure of the SLM forming magnetic shielding structure are as follows: the laser power was 1000W and the scanning speed was 3500mm/s. The process conditions for setting the light weight layer in the middle of the SLM forming magnetic shielding structure are as follows: the laser power was 800W and the scanning speed was 1400mm/s. The process conditions for setting the outer magnetic shielding layer of the SLM forming magnetic shielding structure are as follows: the laser power was 1000W and the scanning speed was 1800mm/s. The scanning interval h is 0.14mm; the thickness of the powder layer is 0.03mm; the scanning strategy is rotated 67 degrees for each layer; after each layer of powder is paved, remelting is carried out after laser scans once along a path; the preheating temperature of the substrate is 80 ℃; argon is introduced into the forming cabin, so that the oxygen content volume is controlled below 0.1%.
After the SLM is printed successfully, the machine is shut down, cooled and taken out. The substrate is wire-cut along the end face, and the molded sample is separated from the substrate.
The magnetic test samples formed in this example were then subjected to performance testing.
1. Microhardness test
And (3) performing microhardness test on the cross section of the inner layer assembly structure of the SLM forming magnetic shielding layer by using a Wilson HV type microhardness meter, dotting every 0.25mm, applying a load of 200gf, and calculating the average microhardness of the sample for 10 s.
2. Magnetic property test
The ring-shaped test sample prepared by the process of forming a magnetic shielding layer by using an SLM is subjected to magnetic performance test by using a Vibrating Sample Magnetometer (VSM), and the size is as follows: 31mm inside diameter, 42mm outside diameter, height: 5mm. And (3) slightly polishing to remove surface stains, generating a hysteresis curve of 300K under a 1T magnetic field to obtain a magnetization curve and a hysteresis loop (B-H) of the sample, and calculating to obtain the coercive force, saturated magnetic induction intensity, remanence and maximum magnetic permeability of the formed sample.

Claims (1)

1. A manufacturing method of a magnetic shielding structural material based on SLM forming is characterized by comprising the following steps: the powder element components used are Mo:1.8 to 9.48 weight percent, V:0.05 to 2.9 weight percent, 0.12 to 7.71 weight percent of Nb, 0.7 to 2.48 weight percent of Al, 1.02 to 3.44 weight percent of Ti, and Cu:0.1 to 3.8 weight percent, co:0.02 to 3.2 weight percent, cr:0.02 to 4.4 weight percent, B:0.01 to 8.45 weight percent, 0.08 to 8.12 weight percent of Si, fe:3.74 to 19.88 weight percent, and the balance of Ni; the magnetic shielding structure is composed of an inner layer assembly structure, a middle light-weight layer and an outer magnetic shielding layer respectively;
(1) The thickness of the inner layer assembly structure is 10-25 mm, the laser power range is 300-1000W, the scanning speed is 2000-3500 mm/s, and the scanning interval is 0.08-0.16 mm;
(2) The thickness of the middle light layer is 10-35 mm, the face-centered cubic structure lattice filling design is adopted, and the lattice cell structure size is 5 multiplied by 5 to 30 multiplied by 30mm 3 The diameter of the rod unit is 0.16-2mm, and the relative density of the filling lattice structure of the middle layer is 60-90%; the laser power range is 100W-800W, the scanning speed is 800-2500 mm/s, and the scanning interval is 0.08-0.16 mm;
(3) The thickness of the outer magnetic shielding layer is 0.8-6.2 mm, the laser power range is 200W-1000W, the scanning speed is 800-2000 mm/s, and the scanning interval is 0.08-0.16 mm;
the thickness of the layer of the SLM forming magnetic shielding structural material is 0.25-0.45 mm; the scanning mode is that each layer rotates 45-90 degrees; remelting the laser along a scanning path twice after each powder spreading is completed; the preheating temperature of the substrate is 30-200 ℃;
argon is introduced into the forming cabin, so that the oxygen volume content is controlled below 0.1%.
CN202210400651.4A 2022-04-17 2022-04-17 Manufacturing method for magnetic shielding structural material based on SLM (selective laser deposition) forming Active CN114939672B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210400651.4A CN114939672B (en) 2022-04-17 2022-04-17 Manufacturing method for magnetic shielding structural material based on SLM (selective laser deposition) forming

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210400651.4A CN114939672B (en) 2022-04-17 2022-04-17 Manufacturing method for magnetic shielding structural material based on SLM (selective laser deposition) forming

Publications (2)

Publication Number Publication Date
CN114939672A CN114939672A (en) 2022-08-26
CN114939672B true CN114939672B (en) 2023-08-01

Family

ID=82907485

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210400651.4A Active CN114939672B (en) 2022-04-17 2022-04-17 Manufacturing method for magnetic shielding structural material based on SLM (selective laser deposition) forming

Country Status (1)

Country Link
CN (1) CN114939672B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115722681B (en) * 2022-10-24 2024-04-19 北京工业大学 Laser forming method of special-shaped structure composite material magnetic shielding cover
CN115592131B (en) * 2022-10-24 2023-08-11 北京工业大学 Negative poisson ratio interlayer component and magnetic shielding layer integrated forming method

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN206583456U (en) * 2017-03-15 2017-10-24 北京菲波森思科技有限公司 A kind of magnetic screen fiber optic loop and fibre optic gyroscope
CN210533386U (en) * 2019-07-24 2020-05-15 国宏国晶科技发展有限公司 Laser gyroscope
CN112492864A (en) * 2020-11-26 2021-03-12 华中科技大学 Controllable electromagnetic shielding component and preparation method thereof
CN112676577A (en) * 2020-12-25 2021-04-20 中北大学 Lattice structure of nickel-based alloy clad material and preparation method thereof
CN113664221A (en) * 2021-08-20 2021-11-19 上海科技大学 Three-period extremely-small curved surface supporting structure manufactured by applying metal additive and manufacturing method thereof
CN114318037A (en) * 2021-12-30 2022-04-12 西安交通大学 High-tungsten-content tungsten-nickel alloy material based on laser additive manufacturing and preparation method thereof

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009172860A (en) * 2008-01-24 2009-08-06 Hirobumi Ito Wrinkled plate and method of manufacturing the same

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN206583456U (en) * 2017-03-15 2017-10-24 北京菲波森思科技有限公司 A kind of magnetic screen fiber optic loop and fibre optic gyroscope
CN210533386U (en) * 2019-07-24 2020-05-15 国宏国晶科技发展有限公司 Laser gyroscope
CN112492864A (en) * 2020-11-26 2021-03-12 华中科技大学 Controllable electromagnetic shielding component and preparation method thereof
CN112676577A (en) * 2020-12-25 2021-04-20 中北大学 Lattice structure of nickel-based alloy clad material and preparation method thereof
CN113664221A (en) * 2021-08-20 2021-11-19 上海科技大学 Three-period extremely-small curved surface supporting structure manufactured by applying metal additive and manufacturing method thereof
CN114318037A (en) * 2021-12-30 2022-04-12 西安交通大学 High-tungsten-content tungsten-nickel alloy material based on laser additive manufacturing and preparation method thereof

Also Published As

Publication number Publication date
CN114939672A (en) 2022-08-26

Similar Documents

Publication Publication Date Title
CN114939672B (en) Manufacturing method for magnetic shielding structural material based on SLM (selective laser deposition) forming
Zhang et al. A review on microstructures and properties of high entropy alloys manufactured by selective laser melting
Yang et al. Effect of remelting on microstructure and magnetic properties of Fe-Co-based alloys produced by laser additive manufacturing
Kang et al. Controllable mesostructure, magnetic properties of soft magnetic Fe-Ni-Si by using selective laser melting from nickel coated high silicon steel powder
CN107498054B (en) A method of toughening 24CrNiMo steel alloy is prepared using selective laser smelting technology
Li et al. Additively manufactured Ni-15Fe-5Mo Permalloy via selective laser melting and subsequent annealing for magnetic-shielding structures: Process, micro-structural and soft-magnetic characteristics
CN105513734B (en) Neodymium iron boron magnetic body weight lucium, neodymium iron boron magnetic body and preparation method thereof
Alleg et al. Effect of the laser scan rate on the microstructure, magnetic properties, and microhardness of selective laser-melted FeSiB
Ali et al. A review of processing techniques for Fe-Ni soft magnetic materials
Yang et al. Soft magnetic property of (Fe60Co35Ni5) 78 Si6B12Cu1Mo3 alloys by laser additive manufacturing
Thorsson et al. Selective laser melting of a Fe-Si-Cr-BC-based complex-shaped amorphous soft-magnetic electric motor rotor with record dimensions
CN108735414A (en) A kind of preparation method of high intensity Nd-Fe-B permanent magnet material
Parra et al. Effect of cobalt addition on the microstructural evolution, thermal stability and magnetic properties of Fe-based amorphous alloys
CN103151132A (en) NdFeB (neodymium iron boron) magnetic material with ultrafine powder and preparation method thereof
CN116075907A (en) Permanent magnet with customized texture and magnetic orientation
Miao et al. The effects of spraying power on microstructure, magnetic and dielectric properties of plasma sprayed cobalt ferrite coatings
Cui et al. Mechanically strengthened heterogeneous Sm-Co sintered magnets
Harivandi et al. Soft magnetic high entropy FeCoNiCuMn alloy with excellent ductility and high electrical resistance
Yang et al. The effect of Ti additions on the microstructure and magnetic properties of laser clad FeNiCr/60% WC coatings
US3891475A (en) Pole piece for producing a uniform magnetic field
CN111020347B (en) High-density complex phase alloy material and preparation method thereof
Kang et al. Laser Powder Bed Fusion Processing of Soft Magnetic Fe–Ni–Si Alloys: Effect of Hot Isostatic Pressing Treatment
Dhokey et al. Role of ceramic coating on electrical and magnetic properties of iron powder
Efremov et al. Production of Fe–Cr–Co-based magnets by selective laser sintering
Ali et al. Investigation of boron effect on the densification of Fe-50% Ni soft magnetic alloys produced by powder metallurgy route

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant