R&D
RESEARCH AREA
- Quality improving technology on internal and surface defects of large forgings.
- Die forging technology for the improvement of yield ratio of forging material.
Internal void closure during the forging of large cast ingots using simulation.
Die forging technology of large crank throw used in the ship engine.
- Alloy design technology (hardness, machinability, etc.) considering customer's requirements.
- Forging and heat treatment technology to control internal defects and secure microstructure.
- Development of mold materials considering mold use characteristics.
Mold steel CCT diagram and organization.
Phase fraction analysis during heat treatment of mold steel.
Microstructure during the spheroidizing heat treatment of tool steel.
- Development of forging rolls for each application such as section steel rolling, cold rolling, backup, etc.
- Heating and forging technology to get internal soundness.
- Heat treatment technology to secure mechaniclal properties.
High carbon forged roll for long bar.
Heat transfer analysis for the ingot heating.
Hardness distribution after surface heat treatment (external data).
- Die forging process design technology.
- Temperature control technology during hot forging.
- Heat treatment technology to secure physical properties by use.
Blisk die forging for aero engines.
Ti alloy structure by heating temperature.
Ti alloy forming-temperature coupled analysis.
- Highly clean and segregation-reducing ingot production technology.
- Forging technology to eliminate internal defects.
- Die forging technology to improve recovery rate.
- Heat treatment technology to secure physical properties.
Molten Steel's flow and solidification analysis technology.
Die forging technology to improve recovery rate.
Internal forging effect enhancement technology.
Heat treatment technology.
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RESEARCH PERFORMANCE
- Development of continuous monoflow line die forging technology for crankshaft, a key part of 4-stroke engines for ships and power generation.
- Possible to manufacture from 17 to 54 cm based on engine bore diameter.
- The world's largest crankshaft for 4-stroke engines (engine bore diameter 46cm, won IR52 Jang Young-sil Award in 2017).
- Developed the world's first large Thrust Cam Shaft mold forging technology (patented).
- More Improved recovery rate and secured stable dimensions then open die forging.
- Development of alloy design and forging and heat treatment technology to secure uniform hardness and special properties.
- Approved by Hyundai-Kia Motors, supplying.
Internal hardness distribution (900x1200 sectional size)
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Mold steel organization (HD4)
Machinability (tool wear) comparison
- Development of tool steel for hot stamping for production of high-strength parts according to vehicle weight reduction.
- Securing high strength and high thermal conductivity specialized for hot stamping.
- Field tested by Hyundai-Kia Motors and supplying.
Tensile Strength Comparison
Thermal conductivity comparison
Machinability (tool wear) comparison
- Development of Roll, a core part of steel manufacturing facilities.
- High carbon roll for section steel rolling (1.5%C, 1.8%C, 2.1%C).
- Work roll for cold rolling (3% Cr, 5% Cr).
- Approved by Hyundai Steel, currently being supplied.
High Carbon Roll.
Work Roll
High Carbon Roll Organization
High carbon roll forging computer simulation
