18277837. TIG WELDED JOINT simplified abstract (JFE STEEL CORPORATION)
Contents
TIG WELDED JOINT
Organization Name
Inventor(s)
Kazufumi Watanabe of Tokyo (JP)
TIG WELDED JOINT - A simplified explanation of the abstract
This abstract first appeared for US patent application 18277837 titled 'TIG WELDED JOINT
The abstract describes a TIG welded joint in a high-Mn content steel material that reduces hot cracking during welding, while maintaining high strength and excellent cryogenic impact toughness.
- The high-Mn content steel material has a specific chemical composition including C, Si, Mn, P, S, Al, Cr, N, and O percentages, with the balance being Fe and incidental impurities.
- The weld metal also has a specific chemical composition including C, Si, Mn, P, S, Al, Cr, and N percentages, with the balance being Fe and incidental impurities.
Potential Applications: - This technology can be used in the automotive industry for manufacturing high-strength and impact-resistant components. - It can also be applied in the construction sector for welding structural steel elements that require high toughness and strength.
Problems Solved: - The technology addresses the issue of hot cracking during the welding process in high-Mn content steel materials. - It provides a solution for achieving high strength and excellent cryogenic impact toughness in welded joints.
Benefits: - Improved weld quality with reduced occurrence of hot cracking. - Enhanced strength and impact toughness in the welded joints. - Increased durability and reliability of components in various applications.
Commercial Applications: - Title: "High-Strength TIG Welded Joints for Automotive and Construction Industries" - This technology can be commercially utilized in the production of high-performance automotive parts and structural steel components. - It has market implications in industries that require strong and durable welded joints for critical applications.
Questions about the technology: 1. How does the high-Mn content steel material contribute to reducing hot cracking during welding? 2. What are the specific advantages of using TIG welding for high-strength applications in the automotive and construction sectors?
Original Abstract Submitted
A TIG welded joint in a high-Mn content steel material that can be formed with reduced occurrence of hot cracking during the welding process and has high strength and excellent cryogenic impact toughness. In the TIG welded joint, the high-Mn content steel material has a chemical composition including, by mass %, C: 0.10 to 0.80%, Si: 0.05 to 1.00%, Mn: 18.0 to 30.0%, P: 0.030% or less, S: 0.0070% or less, Al: 0.010 to 0.070%, Cr: 2.5 to 7.0%, N: 0.0050 to 0.0500%, and O: 0.0050% or less, the balance being Fe and incidental impurities, and a weld metal has a chemical composition including C: 0.10 to 0.80%, Si: 0.05 to 1.00%, Mn: 15.0 to 30.0%, P: 0.030% or less, S: 0.030% or less, Al: 0.100% or less, Cr: 6.0 to 14.0%, and N: 0.100% or less, the balance being Fe and incidental impurities.
