Electro Slag Welding-Mechanical Engineering-Project Presentation, Study Guides, Projects, Research of Mechanical Engineering

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PRESENTATION LAYOUT

 Introduction  A brief History  Equipment  ESW Process  Diagrammatic Explanation  Quick Review  Advantages and Disadvantages

INTRODUCTION

 Fusion-Welding process  Melting to join materials of similar compositions and melting points  Highly Productive Single pass welding process  For thick materials ( thickness greater than 25 mm up to 300 mm)  For materials in vertical or close to vertical position

A BRIEF HISTORY

 The process was patented by Robert K Hopkins in the United States in February 1940 (patent 2191481) and developed and refined at the Paton Institute, Kiev, USSR during the 1940s. The Paton method was released to the west at the Bruxelles Trade Fair of 1950.

EQUIPMENT

Electroslag welding (ESW): (a) front view with molding shoe removed forclarity; (b) side view showing schematic of molding shoe.

ESW CONT….

o Electrical resistance generates heat to maintain the welding process o The density of the slag is less than that of the molten metal, it remains on top to protect the weld pool o Solidification occurs from the bottom o Additional molten metal is supplied from above by the electrode and the edges of the base parts o The process gradually continues until it reaches the top of the joint

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Time's the king of men; he's both their parent, and he is their grave, and gives them what he will, not what they crave ( William Shakespeare)

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