Pure-iron/iron-based-alloy hybrid soft magnetic powder cores compacted at ultra-high pressure

Saito, Tatsuya; Tsuruta, Hijiri; Watanabe, Asako; Ishimine, Tomoyuki; Ueno, Tomoyuki

doi:10.1063/1.4993687

Cited by 13 publications

(5 citation statements)

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“…However, the pure iron strips have higher saturation flux density than Mu-metal and electrical steel (saturation flux density of Mu-metal is 0.6 T). This observation is in consonance with earlier findings reported in the literature [ 38 , 40 , 41 ]. Therefore, the use of pure iron strips can be investigated for certain applications of magnetic flux shielding.…”

Section: Conclusion From Magnetic and Materials Characterizationsupporting

confidence: 93%

“…The 99.8% pure iron foils fabricated with electro-deposition and cold rolling have better permeability (95.4% higher, the maximum relative permeability of electrical steel: 4000 and maximum relative permeability of the pure iron: 7818) than that of conventional Fe-Si electrical steel (Grade: ASTM 30F677). The observation for better magnetic permeability of the pure iron is in agreement with the earlier results reported in the references [ 38 , 39 , 40 ]. Further, the saturation magnetic flux density of the iron foils is better than electrical steel.…”

Section: Conclusion From Magnetic and Materials Characterizationsupporting

confidence: 93%

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Manufacturing of Pure Iron by Cold Rolling and Investigation for Application in Magnetic Flux Shielding

Satpute¹,

Dhoka²,

Iwaniec

et al. 2022

Materials

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The presented work investigates a novel method to manufacture 98.8% pure iron strips having high permeability and better saturation flux density for application in magnetic flux shielding. The proposed method uses electro-deposition and cold rolling along with intermediate annealing in a controlled environment to manufacture 0.05–0.5 mm thick pure iron strips. The presented approach is inexpensive, has better control over scaling/oxidation and requires low energy than that of the conventional methods of pure iron manufacturing by pyrometallurgical methods. Important magnetic and mechanical properties of the pure iron are investigated in the context of the application of the material in magnetic shielding. Magnetic properties of the material are investigated by following IEC60404-4 standard and toroidal coil test to determine hysteresis curve, magnetic permeability and core losses. The microstructure is investigated with an optical microscope and scanning electron microscopy to study grain size and defects after cold rolling and annealing. The properties derived from the experimental methods are used in finite element analysis to study the application of the material for static, low-frequency and high-frequency magnetic shielding. Theoretical simulation results for magnetic shielding around a current-carrying conductor and micro-electromechanical inductive sensor system are discussed. Further shielding performance of the material is compared with that of the other candidate materials, including that of Mu-metal and electrical steel. It is demonstrated that the pure iron strips manufactured in the present study can be used for magnetic shielding in the case of low-frequency applications. In the case of high-frequency applications, a conducting layer can be combined to ensure the required shielding effectiveness in the case of Class 2 applications.

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Section: Conclusion From Magnetic and Materials Characterizationsupporting

confidence: 93%

Section: Conclusion From Magnetic and Materials Characterizationsupporting

confidence: 93%

Manufacturing of Pure Iron by Cold Rolling and Investigation for Application in Magnetic Flux Shielding

Satpute¹,

Dhoka²,

Iwaniec

et al. 2022

Materials

View full text Add to dashboard Cite

show abstract

“…While pure iron is considered for manufacturing the magnetic core, the pole piece, relays, the speaker magnetic conductor, magnetic shield, etc. 58,59) Permanent magnet is considered for circuits where the magnetic excitation is provided by permanent magnets, or by DC or low-frequency ( < 10 Hz) pulsed current coils, with medium to high magnetic fluxes. 60) In low electrical power and electronic circuits, iron based soft magnets are used even at high frequencies ( < 200 Hz).…”

Section: Magnetic Materialsmentioning

confidence: 99%

“…Some of the major commercial iron powder grades used in MIM technology. 58) Company Grade D50 (μm) AD (g/cm 3 ) Tap Density (g/cm 3 ) Femin (%) Cmax (%) Omax (%) Nmax (%) density from 1 200-1 450°C with increase in temperature. Tian et al 66) showed that the using carbonyl iron powder in MIM process, sintered density has improved significantly (above 1 393°C) using δ phase sintering.…”

Section: Magnetic Materialsmentioning

confidence: 99%

Opportunity and Challenges of Iron Powders for Metal Injection Molding

et al. 2021

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Design flexibility, mass customization, waste reduction and the ability to manufacture near-net complexshape structures, as well as rapid prototyping, are the main advantages of Metal Injection Molding (MIM). A brief review of the MIM technique, materials and their development to trending applications using iron powders was delineated. The ground-breaking applications of MIM in automotive, medical, and magnetic materials were discussed. The current-status of iron powder product development prepared for MIM was reviewed. In addition, this paper discussed the main processing challenges considering the MIM technology for producing high-end applications. Overall, this paper gives a summary of MIM, including a study on its benefits and opportunities and as a roadmap for future research and development in iron and steel powder manufacturing technique. KEY WORDS: metal injection molding; iron powders; mass customization; microstructure. ders such as copper, molybdenum, chromium, and nickel. 6) Currently, estimate share of MIM in metal powder industry is minimal, close to 6 000 TPA for iron powders (excluding stainless steel and high alloy steels). 7) The demand is Table 1. Global pure iron powder production (in MT) of key manufacturers in 2017 (Source: QYR Chemical & Material Research Centre, April 2017).

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“…In this paper, the cutting speed of pure iron material is analysed to determine the specific influence of speed on temperature in the process of pure iron material cutting. In the pure iron material cutting, the motor drive control is its running speed (Saito et al, 2018;Gong et al, 2020). By changing the cutting tool position and changing the installation angle of the blade on the cutter body, the cutting angle of the blade in the pure iron material part is increased to about 20°.…”

Section: Analysis Of Cutting Speed Of Pure Iron Materialsmentioning

confidence: 99%

A fuzzy control method for optimal cutting temperature of pure iron

Long

Sheng

2021

IJMPT

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Pure iron material is greatly affected by temperature, which leads to poor control effect of cutting temperature of pure iron material. This paper studies the optimal cutting temperature control of pure iron material. The cutting speed of the pure iron material cutting tool is determined by obtaining the position of the cutting tool and the separation time of the cutting vibration. The influence factors of the cutting temperature are determined by obtaining the cutting heat and chip ratio of the pure iron material. The fuzzy control method is introduced to control the cutting temperature threshold of pure iron material as a membership function, and the temperature threshold of pure iron material is output to realise cutting temperature control. The results show that the average maximum value of the average control value of the cutting temperature is 98, and the minimum correction error of the temperature control value is 1%.

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Pure-iron/iron-based-alloy hybrid soft magnetic powder cores compacted at ultra-high pressure

Cited by 13 publications

References 0 publications

Manufacturing of Pure Iron by Cold Rolling and Investigation for Application in Magnetic Flux Shielding

Manufacturing of Pure Iron by Cold Rolling and Investigation for Application in Magnetic Flux Shielding

Opportunity and Challenges of Iron Powders for Metal Injection Molding

A fuzzy control method for optimal cutting temperature of pure iron

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