Research and Development
JINSUNG C&I leads the industry through continuous research and development.
L/C (Laser Cladding)
The technology involves melting metal powder using a domestically pioneered/largest 20kW high-power diode laser as the heat source. This ensures a coating layer by bonding the substrate and the metal through metallurgical means, offering excellent wear resistance, corrosion resistance, and heat resistance.
The technology minimizes the thermal distortion and excessive dilution issues of conventional SAW (Submerged Arc Welding) hardfacing. It also overcomes the spalling problem of thermal spray and fusing, as well as the limitation in controlling the thickness of the coating layer.
Comparison of manufacturing methods
| Distinction | L/C | SAW | Thermal Spray | |
|---|---|---|---|---|
| 01 | Heat Source | Laser | Arc | Flame |
| 02 | Dilution rate | 3 ~ 10% | 30 ~ 60% | 0% |
| 03 | Bonding strength(Mpa) | ≤ 600 | ← | ≤ 250 |
| 04 | Bonding type | Metal bonding | ← | Diffusion bonding |
| 05 | Layer deposition height | 0.3 ~ 3.0mm | 2.0 ~ 4.0mm (Inability to achieve thin layer deposition) | 0.1~1.5mm (Inability to achieve thick layer deposition) |
| 06 | Thermal deformation | Good | Bad | Good |
| 07 | Method Characteristics | Highly functional, debris-free, stacked tissue formation resulting from rapid cooling rates (mechanically relatively ↑) | One of the largest structural repair methods is deformation due to damage during repair work. | High-temperature wear-resistant, corrosion-resistant, inverted Ni-based self-soluble coating is possible, but there is a high possibility of sudden spalling phenomenon due to the ball and force due to the diffusion bonding method. |
| 08 | Method and Organizational Photos |
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External Activities
2023.10 Spring Conference of the Metallurgical Materials Society
Oral Presentation: Study on the Enhancement of Durability in Continuous Casting Guide Rolls Manufactured by HPDDL + SAW Composite Layer Manufacturing Method
Poster Presentation: Study on Post-Usage Phenomena of Continuous Casting Guide Rolls Manufactured by HPDDL + SAW Composite Layer Manufacturing Method
2023.04 Spring Academic Conference of the Metallurgical Materials Society
Comparative Analysis of the HPDDL and SAW Cladding by Fe-based alloy
of Continuous Caster Rolls
2022. KIMS TECHFAIR booth presentation
KIMS Techfair
2019. Hyundai Steel TECH SHOW
Laser Cladding
Patent accomplishments
Patent application
Manufacturing method of guide rolls for continuous casting equipment
10-2023-0027293
2023.02.28
Utility patent
Support rolls for continuous casting machines
1018878730000
2018.08.07
Design patent
Support rolls for continuous casting machines
3009369140000
2017.12.19
Utility patent
Heat treatment device for ring flanges using induction heating coils
1011939610000
2012.10.17
Utility patent
Multiple induction heating device for boilers
1011442420000
2012.05.02
Utility patent
Multiple induction heating device for boilers
1010801080000
2011.10.31
Utility patent
Automatic drilling machine for pin hole machining
10089226700000
2009.04.01
Utility patent
Continuous heat treatment method and apparatus for sheet metal using induction heating
1006945590000
2007.03.07
Daegu Factory
Steel Industry Equipment and Rolls
Changwon Factory
Pins & Shafts
DONG AH
Bolts & Materials