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  Welding Knowledge

   Want to know more about welding ? Then choose from the listing below
   Brought to you in conjunction with TWI, World Centre for Materials Joining
   Technology.

    Welding Methods:

Manual Metal Arc Welding
Oxyacetylene Welding
MIG Welding
Submerged Arc Welding
TIG Welding
Plasma Welding
Ceramics - materials, joining and applications
Welding techniques for thermoplastics
Extrusion welding of thermoplastics
Butt fusion welding of plastics
Friction welding of plastics
Hot plate welding of plastics moulded components
Hot Gas Welding of Plastics Part 1
Hot Gas Welding of Plastics Part 2
Ultrasonic welding of injection moulded components Part 1
Ultrasonic welding of injection moulded components Part 2

    Gouging:

Thermal Gouging
Oxygen-fuel gas flame gouging
Manual metal arc gouging
Plasma arc gouging
Air carbon arc gouging

    Welding Equipment:

Equipment for Oxyacetylene welding
Equipment for MMA welding
Equipment for MIG welding
Equipment for Submerged arc welding
Equipment for TIG Welding
Equipment for Plasma welding

    How To Weld:

Carbon manganese and low alloy steels
Stainless steel
Aluminium alloys
Nickel and nickel alloys
Copper and copper alloys
Titanium and titanium alloys
Cast irons

    Distortion

Prevention by pre-setting, pre-bending or use of restraint
Prevention by fabrication techniques
Corrective techniques
Types and causes

    Welding Defects:

Incomplete root fusion or penetration
Lack of sidewall and inter-run fusion
Porosity
Slag inclusions
Solidification cracking
Hydrogen cracks in steels - identification
Hydrogen cracks in steels - prevention and best practice
Lamellar tearing
Reheat cracking
A general review of geometric shape imperfections Part 1
A general review of geometric shape imperfections Part 2

    Cutting Processes

Oxyfuel cutting - process and fuel gases
Application of oxyfuel cutting
Laser cutting
Laser cutting: process variants
Plasma arc cutting - process and equipment considerations

    Health, Safety & Accident Prevention:

General
Oxyacetylene welding, cutting and heating
Electrical hazards - power source and installation
Arc welding
Health risks of welding fume/gases
Health risks from fume and gases during welding
Control of welding fume

    Standards

Application standards, codes of practice and quality levels
A review of the application of weld symbols on drawings - Part 1
A review of the application of weld symbols on drawings - Part 2
Fillet welded joints - a review of the practicalities

"As a rule of thumb when selecting a suitable current level an electrode will require about 40A per mm of its diameter"