EPM Activities in Dalian University of Technology

Tingju Li, Tongmin Wang, Xingguo Zhang, Zhiqiang Cao, Bin Wen, Qi Zhang and Jun-ze Jin

School of Materials Science and EngineeringLiaoning Key Laboratory of Special Processing of Raw Materials

Dalian University of Technology, Dalian 116024, China

Presentation Title

Presentation Contents

Horizontal Continuous Casting of Tin-Phosphor Bronze Strip under travelling magnetic field

• Electromagnetic Purification of Aluminum Alloy under high frequency (20,000 Hz) magnetic field

• Synthesis and crystal structure of n-diamond from catalyzed carbon black under high static (10 T) magnetic field

Schematic view of horizontal continuous casting of bronze strip

Bronze strip

Graphite mold

Water cooling circulation

Magnetic generator

Furnace

Design of travelling magnetic generator

1. Induction Coils Design with Integer CARAM Method

2. Induction Coils Design with Seperate CARAM Method

Comparison of Magnetic intensity

1. Magnetic intensity with Integer CARAM Method

2. Magnetic intensity with Seperate CARAM Method

melt

melt

Comparison of Magnetic intensity

1. Magnetic intensity

with Integer CARAM Method

2. Magnetic intensity

with Seperate CARAM Method

melt

Comparison of Electromagnetic Force

1. Electromagnetic Force with Integer CARAM Method

2. Electromagnetic Force with Seperate CARAM Method

Comparison of Stirring Turbulance

1. Stirring Turbulance with Integer CARAM Method

2. Stirring Turbulance with Seperate CARAM Method

Comparison of Casting Surface

I = 0 A

I = 30 A; Integer CARAM Method

I = 30 A; Seperate CARAM Method

Comparison of Fracture Appearance

I = 0 A

I = 30 A; Seperate CARAM Method

左边 中心

中心 右边

左边

右边中心

中心

300×

300×

Comparison of Grain Structure

I = 0 A

I = 30 A; Seperate CARAM Method

Vertical Continuous Casting under high frequency magnetic field

Joul heat density (W/m^3)

Stirring turbulance Stirring freesurface (Meniscus)

Electromagnetic force (N/ m^3)

Temperature (K)

air

melt

air

melt

meniscus

Vertical Continuous Casting under high frequency magnetic field

Joul heat density (W/m^3)

Stirring turbulance

Temperature (K)

Presentation Contents

• Horizontal Continuous Casting of Tin-Phosphor Bronze Strip under travelling magnetic field

Electrimagnetic Purification of Aluminum Alloy under high frequency (20,000 Hz) magnetic field

• Synthesis and crystal structure of n-diamond from catalyzed carbon black under high static (10 T) magnetic field

Mechanism of Electromagnetic Purification

1. Two phase problem: metallic melt

nonmetallic inclusion

2. Lorenz force driven flow

3. Joule heating

J×Bmetallic melt

nonmetallic inclusion

Animations of Electromagnetic Purification

Animations of Electromagnetic Purification

Presentation Contents

• Horizontal Continuous Casting of Tin-Phosphor Bronze Strip under travelling magnetic field

• Electromagnetic Purification of Aluminum Alloy under high frequency (20,000 Hz) magnetic field

Synthesis and crystal structure of n-diamond from catalyzed carbon black under high static (10 T) magnetic field