Overview
ABSTRACT
In this article, we explore the various factors affecting the quality of welded joints, from edge preparation to the management of thermal and metallurgical stresses. Critical issues such as cold cracking, hot cracking, lamellar tearing, and fatigue failures are discussed, along with practical recommendations to enhance weld durability.
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Thibault FOURCADE: Engineer
INTRODUCTION
Steel welding is a critical stage in many construction projects, both structurally and functionally. The quality of welded assemblies depends on a number of metallurgical, geometrical and procedural parameters. This article analyzes the main phenomena affecting weld performance, drawing on current practices and the precautions to be taken. Whether it's a question of edge preparation, consumable selection, hydrogen control or internal stress control, every aspect is essential to guarantee the reliability and durability of welded structures.
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KEYWORDS
steel weldability | cold cracking | welded joint fatigue
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Weldability of steels
Operative weldability
Bibliography
Standards and norms
- Recommendations for welding metallic materials – Part 2: Arc melting of steels. - NF EN 1011-2 -
- Welding – Acceptance criteria for electron beam and laser welding. - NF EN ISO 13919 -
- Welder qualification – Fusion welding – Part 1: Steels. - NF EN ISO 9606-1 -
- Qualification des opérateurs et des régleurs en soudage pour le soudage mécanisé et le soudage automatique des matériaux métalliques....
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