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5 Clasificación de los procesos de soldadura según la AWS
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5 Clasificación de los procesos de soldadura según la AWS

Introduction to Welding Processes

Overview of the Course

  • The course is an introduction to welding using coated electrode techniques, organized by the Electromechanical Engineering program at the Armed Forces University in Latacunga.

Classification of Welding Processes

  • The classification of welding processes is based on standards set by the American Welding Society (AWS), which provides a numbering system for electrodes and their applications.
  • There are over a hundred recognized welding processes, categorized into major groups by AWS. Understanding these classifications is essential for selecting appropriate techniques.

Types of Welding Classifications

  • Welding processes are divided into two main families: heterogeneous and homogeneous.
  • Heterogeneous processes are further classified into soft and strong welds.
  • Homogeneous processes are divided into fusion and pressure methods.

Detailed Subdivisions of Welding Processes

  • Fusion Processes:
  • Include arc welding where metals fuse through heat from an electric arc, with or without additional metal input, typically without applying pressure. Examples include Shielded Metal Arc Welding (SMAW) and Gas Tungsten Arc Welding (GTAW).
  • Solid-State Processes:
  • Involve applying pressure at temperatures below the melting point of base metals, such as forge welding and cold welding.

Soft and Strong Soldering Techniques

  • Soft Soldering:
  • Performed at temperatures around 400°C using filler metals like lead-tin alloys; includes oven soldering and injection soldering methods.
  • Strong Soldering:
  • Exceeds temperatures of 400°C but remains below the solidification point of base metals, utilizing materials like silver-copper-zinc alloys; includes torch soldering methods.

Resistance and Gas Welding Methods

  • Resistance Welding:
  • Produces heat through electrical resistance between surfaces being joined, followed by applied pressure; includes seam resistance welding (RW) and spot resistance welding (RSW).
  • Gas Welding:
Playlists: INTRODUCCIÓN A LA SOLDADURA POR ARCO CON ELECTRODO REVESTIDO (SMAW)