Welding method

The laser welding method addresses thermal deformation and plate lifting in stainless steel linings by optimizing heat input and using a guide member, ensuring efficient and cost-effective corrosion-resistant welds.

JP2026096284APending Publication Date: 2026-06-15NIPPON STEEL & SUMIKIN ENGINEERING CO LTD
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Patent Information

Application Number
JP2024209990
Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
Filing Date
2024-12-03
Publication Date
2026-06-15

AI Technical Summary

Technical Problem

Existing welding methods for stainless steel linings in offshore structures cause thermal deformation and plate lifting, leading to potential melt-off and require time-consuming fine-pitch tack welding to prevent this.

Method used

A laser welding method is employed to join thin stainless steel sheets to carbon steel or stainless steel substrates, optimizing heat input and reducing thermal deformation by using a guide member and minimizing the use of welding materials.

Benefits of technology

The method effectively suppresses burn-through and ensures corrosion resistance of the welded joint while reducing costs and time by minimizing heat input and eliminating the need for extensive edge alignment.

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Abstract

The object of this disclosure is to provide a welding method that suppresses burn-through of thin metal sheets and ensures corrosion resistance of the welded joint. [Solution] According to the present disclosure, a welding method is provided that suppresses the melting of thin metal sheets and ensures the corrosion resistance of the welded part, and is characterized by comprising a welding step of laser welding a second thin metal sheet 20 made of stainless steel onto the surface of a metal substrate made of carbon steel or a first thin metal sheet 10 made of stainless steel.
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Citation Information

Patent Citations

  • Laser joining material free of distortion

    JP2008238176A

  • Joint assembly device

    JP2015058449A

  • Laser welding method and laser welder

    JP2017006953A

  • Laser welding method and laser welder

    JP2017006954A

  • Laser welding method

    JP2018140424A