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TWI Job Knowledge
TWI Job Knowledge Articles
| It is our intention to provide our Customers with the most current and up-to-date information regarding the many aspects relating to the exceptionally broad science of Welding. Consequently and with kind permission of The Welding Institute, we provide links to many of their "Job Knowledge for Welders" articles below. |  |
- Job knowledge 1: Welding and joining process classification
- Job knowledge 2: The manual metal arc process (MMA Welding)
- Job knowledge 3: Oxy-fuel welding
- Job knowledge 4: MIG welding.
- Job knowledge 5: Submerged arc welding process
- Job knowledge 6: Tungsten inert gas (TIG or GTA) welding
- Job knowledge 7: Plasma arc elding
- Job knowledge 8: Thermal gouging
- Job knowledge 9: Oxy-fuel gouging
- Job knowledge 10: Manual metal arc gouging
- Job knowledge 11: Plasma arc gouging
- Job knowledge 12: Air carbon arc gouging
- Job knowledge 13: Equipment for oxyacetylene welding
- Job knowledge 14: Equipment for manual metal arc (MMA or SMA) welding
- Job knowledge 15: Equipment for MIG welding
- Job knowledge 16: Equipment for submerged arc welding
- Job knowledge 17: Equipment for tungsten inert gas (TIG, GTA) welding
- Job knowledge 18: Equipment for plasma welding
- Job knowledge 19: Weldability of materials - carbon manganese and low alloy steels
- Job knowledge 20: Weldability of materials - stainless steel
- Job knowledge 21: Weldability of materials - aluminium alloys
- Job knowledge 22: Weldability of materials - nickel and nickel alloys
- Job knowledge 23: Weldability of materials - copper and copper alloys
- Job knowledge 24: Weldability of materials - titanium and titanium alloys
- Job knowledge 25: Weldability of materials - cast irons
- Job knowledge 26: Health, safety and accident prevention - general
- Job knowledge 27: Health, safety and accident prevention - oxyacetylene welding, cutting and heating
- Job knowledge 28: Health, safety and accident prevention: electrical hazards - power source and installation
- Job knowledge 29: Health, safety and accident prevention - arc welding
- Job knowledge 30: Health, safety and accident prevention - welding fume assessment
- Job knowledge 31: Health, safety and accident prevention - health risks from fume and gases during welding
- Job knowledge 32: Health, safety and accident prevention - control of welding fume
- Job knowledge 33: Distortion - types and causes
- Job knowledge 34: Distortion - prevention by design
- Job knowledge 35: Distortion - prevention by pre-setting, pre-bending or use of restraint
- Job knowledge 36: Distortion Control - Prevention by fabrication techniques
- Job knowledge 37: Distortion - corrective techniques
- Job knowledge 38: Standards - application standards, codes of practice and quality levels
- Job knowledge 39: Welding procedure
- Job knowledge 40: Weld defects / imperfections - incomplete root fusion or penetration
- Job knowledge 41: Weld defects / imperfections in welds - lack of sidewall and inter-run fusion
- Job knowledge 42: Defects/imperfections in welds - porosity
- Job knowledge 43: Defects / imperfections in welds - slag inclusions
- Job knowledge 44: Defects - solidification cracking
- Job knowledge 45: Defects / hydrogen cracks in steels - identification
- Job knowledge 46: Defects - hydrogen cracks in steels - prevention and best practice
- Job knowledge 47: Defects - lamellar tearing
- Job knowledge 48: Defects / imperfections in welds - reheat cracking
- Job knowledge 49: Oxyfuel cutting - process and fuel gases
- Job knowledge 50: Cutting processes - application of oxyfuel cutting
- Job knowledge 51: Cutting processes - plasma arc cutting - process and equipment considerations
- Job knowledge 52: Cutting processes - laser cutting
- Job knowledge 53: Laser cutting: process variants
- Job knowledge 54: Ceramics - materials, joining and applications
- Job knowledge 55: welding techniques for thermoplastics
- Job knowledge 56a: Hot gas welding of plastics: Part 1 - the basics
- Job knowledge 56b: Hot gas welding of plastics: Part 2 - welding techniques
- Job knowledge 57: Extrusion welding of thermoplastics
- Job knowledge 58: Butt fusion welding of plastics
- Job knowledge 59: Friction welding of plastics
- Job knowledge 60: Hot plate welding of plastics moulded components
- Job knowledge 61: Ultrasonic welding of injection moulded components - Part 1 - Process and equipment
- Job knowledge 62: Ultrasonic welding of injection moulded components - Part 2 - Component design and weld parameters
- Job knowledge 64: A review of the application of weld symbols on drawings - Part 1
- Job knowledge 65: A review of the application of weld symbols on drawings - Part 2
- Job knowledge 66: Fillet welded joints - a review of the practicalities
- Job knowledge 67: A general review of geometric shape imperfections - types and causes - Part 1
- Job knowledge 68: A general review of the causes and acceptance of shape imperfections - Part 2
- Job knowledge 69: Mechanical testing - Tensile testing Part 1
- Job knowledge 70: Mechanical testing - Tensile testing Part 2
- Job knowledge 71: Mechanical testing - notched bar or impact testing
- Job knowledge 72: Notched bar or impact testing. Part II
- Job knowledge 73: Bend testing
- Job knowledge 74: Hardness Testing Part 1
- Job knowledge 75: Hardness Testing Part 2
- Job knowledge 76: CTOD testing
- Job knowledge 77: Compact tension and J integral tests
- Job knowledge 78: Fatigue testing
- Job knowledge 79: Fatigue testing - Part 2
- Job knowledge 80: Fatigue testing - Part 3
- Job knowledge 81: Creep and creep testing
- Job knowledge 82: Welding consumables - part 1
- Job knowledge 83: Welding consumables - part 2
- Job knowledge 84: Welding consumables - Part 3
- Job knowledge 85: Welding consumables - part 4
- Job knowledge 86: Welding consumables - part 5
- Job knowledge 87: Submerged arc welding consumables - part 1
- Job knowledge 88: Submerged arc welding consumables - part 2
- Job knowledge 89: Submerged arc welding consumables - part 3
- Job knowledge 90: Design - part 1
- Job knowledge 91: Design part 2
- Job knowledge 92: Design - part 3
- Job knowledge 93: Design - part 4
- Job knowledge 94: Design
- Job knowledge 95: Calculating weld volume and weight
- Job knowledge 96: Welding costs
- Job knowledge 97: Welding costs - continued
- Job knowledge 98: Welding of HSLA steels
- Job knowledge 99: Welding of ferritic creep-resistant steels
- Job knowledge 100: Welding of ferritic cryogenic steels
- Job knowledge 101: Welding of ferritic/martensitic stainless steels
- Job knowledge 102: Precipitation hardening stainless steels
- Job knowledge 103: Welding of austenitic stainless steel
- Job knowledge 104: Welding of austenitic stainless steel - Part 2
- Job knowledge 105: Duplex stainless steel - Part 1
- Job knowledge 106: Duplex stainless steel - Part 2
- Job knowledge 107: Welding of nickel alloys - Part 1
- Job knowledge 109: Welding of titanium and its alloys - Part 1
- Job knowledge 108: Welding of nickel alloys - Part 2
- Job knowledge 110: Welding of titanium and its alloys - Part 2
- Job Knowledge 111: Welding of copper and its alloys - Part 1
- Job knowledge 112: Welding of copper alloys - brasses and bronzes
- Job Knowledge 113: Copper-nickel alloys
- Job Knowledge 114: Heat treatment of welded joints - Part 1
- Job Knowledge 115: Heat treatment of welded joints - Part 2
- Job Knowledge 116: Heat treatment of welded joints - Part 3
- Job Knowledge 117: Heat treatment of welded joints - Part 5
- Job knowledge 118: A comparison of ISO 15614 Part 1 and ASME IX
- Job knowledge 119: Complying with NACE Hardness Requirements
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