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Permalloy additive manufacturing process plan, radium laser soft magnetic alloy forming process details!
Author： Radium laser
2023-08-15
PermalloyIt refers to an iron-nickel alloy with a nickel content in the range of 30% to 90%. This kind of soft magnetic alloy through the appropriate process, can effectively control the magnetic properties, is a typical functional materials,High permeability, low coercivity, high saturation magnetic induction, high Curie temperature, good corrosion resistance, good processing performanceand other characteristics. Mainly used in alternating magnetic field, widely used in aerospace industry and telecommunications, measurement and control system. Commonly used permalloy 1J50, 1J79, 1J85 and so on.
In the field of aerospace industry, permalloy is mainly used to manufacture precision components with high sensitivity, fine size, small size and low high frequency loss. These components are often designed with complex structures (such as thin-walled structure, dot matrix structure, special-shaped curved surface structure, etc.). Compared with traditional processes, selective laser melting technology has the characteristics of no mold forming, high dimensional accuracy and good metallurgical quality, which is very suitable for the manufacture of such parts and has significant advantages.
Therefore, the laser team for permalloy laser selective melting forming process for a comprehensive study and optimization, and successfully applied to a space products, printed parts of the metallographic structure is dense, excellent mechanical properties, high dimensional accuracy.
Below1J50 and 1J80 materials as examplesThe forming process of radium laser for permalloy is described in detail.
/ 1J50 /
Permalloy
Material characteristics
1J50 has a density of 8.2g/cm³ and a Curie temperature of 500 ℃, and its remarkable characteristics areHigh permeability, high saturation magnetic induction.
specific application
Suitable for magnetic shielding, low-loss micromotors, magnetic sensors and magnetic sensitive components.
Technical difficulty
The residual stress in the printing process is large, and the parts in the post-processing process are easy to crack. The problem was successfully solved by optimizing the printing and heat treatment process by technicians.
Room temperature mechanical properties (heat-treated state)
|
Process |
Tensile strength /MPa |
Yield strength /MPa |
Elongation /% |
|
forging and rolling |
≥ 450 |
≥ 150 |
≥ 35 |
|
SLM |
≥ 450 |
≥ 250 |
≥ 30 |
Application
1J50 permalloy lattice structure
/ 1J80 /
Permalloy
Material characteristics
1J80 is a functional alloy with high initial permeability, with a density of 8.5g/cm³ and a Curie temperature of 330 ℃. Its remarkable characteristics areHigh permeability, low coercivity.
specific application
It is suitable for making transformers, chokes, magnetic heads, magnetic shields, magnetic modulators and other devices; it is widely used in telecommunications, instrumentation, telemetry, remote control and other systems.
Technical difficulty
The residual stress in the printing process is large, and the magnetic properties are very sensitive to the heat treatment process and residual stress. The problem was solved successfully by optimizing the printing process parameters and route by R & D personnel.
Photo of metallographic organization
Metallographic structure density 99.6%
Longitudinal X50
Transverse X50
Room temperature mechanical properties (heat-treated state)
|
Process |
Tensile strength /MPa |
Yield strength /MPa |
Elongation /% |
|
forging and rolling |
≥ 550 |
≥ 147 |
≥ 45 |
|
SLM |
≥ 550 |
≥ 250 |
≥ 45 |
Application
1J80 permalloy lattice structure
Radium Laser has rich experience in metal 3D printing. The technical team takes innovative research and development as the traction, refines the process technology, and continuously realizes the printing demand for special materials. We will also speed up the research and development process and continuously provide users with more safety, stability and high performance.Metal 3D printing equipment.
Permalloy
Previous article
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