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Welder |
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( Trade Theory-Topic Wise) |
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Lecture No. |
Topic to be Covered |
Video Link |
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1 |
Importance of trade Training. General
discipline in the Institute |
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2 |
Elementary First Aid. |
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3 |
Importance of Welding in
Industry |
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4 |
Safety precautions in Shielded Metal
Arc Welding, |
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5 |
Safety in OxyAcetylene
Welding and Cutting. |
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6 |
Introduction and definition of
welding. |
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7 |
Gas Welding equipment, tools,
and accessories |
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8 |
Arc Welding equipment, tools, and
accessories |
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9 |
Various Welding Processes and its
applications. |
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10 |
Arc and Gas Welding terms and
definitions. |
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11 |
The different processes of metal
joining methods: Bolting, riveting, soldering, brazing, seaming,
etc. |
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12 |
Types of welding joints and its
applications. |
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13 |
Edge preparation and fit-up for
different thicknesses. Surface Cleaning |
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14 |
Basic electricity applicable to arc
welding and related electrical terms &definitions. |
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15 |
Heat and temperature and its terms
related to welding |
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16 |
Principle of arc welding |
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17 |
characteristics of arc |
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18 |
Common gases used for welding &
cutting, flame temperatures and uses. - Chemistry of oxy-acetylene flame. -
Types of oxy-acetylene flames and uses. - |
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19 |
Oxy-Acetylene Cutting Equipment
principle, parameters, and application |
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20 |
Arc welding power sources:
Transformer |
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21 |
MG Set |
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22 |
Rectifier Set |
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23 |
Invertor type welding Machine |
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24 |
Advantages and disadvantages of
A.C. and D.C. welding machines |
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25 |
Welding positions as per EN
& ASME: flat, horizontal, vertical and overhead position. |
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26 |
Weld slope and rotation |
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27 |
Welding symbols as per BIS & AWS |
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28 |
Arc length – types – effects of arc
length. |
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29 |
Polarity: Types and applications |
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30 |
Weld quality inspection, common
welding mistakes and appearance of good and defective welds |
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31 |
Weld gauges & its uses |
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32 |
Calcium carbide properties and
uses. |
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33 |
Acetylene gas properties and
generating methods. - |
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34 |
Acetylene gas Purifier |
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35 |
The hydraulic back pressure valve |
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36 |
Flashback arrestor |
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37 |
Oxygen gas and its properties |
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38 |
Production of oxygen by Air
liquefaction |
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39 |
Charging process of oxygen and
acetylene gases |
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40 |
Oxygen cylinder, Dissolved
Acetylene gas cylinders, Color coding for different gas cylinders |
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41 |
Gas regulators, types and uses. |
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42 |
Oxyacetylene gas welding Systems (Low
pressure and High pressure) |
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43 |
Difference between gas welding
blowpipe(LP & HP) and gas cutting blowpipe |
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44 |
Gas welding techniques. Leftward |
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45 |
Gas welding techniques. Rightwar |
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46 |
Arc blow – causes and methods of
controlling. |
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47 |
Distortion in arc & gas
welding and methods employed to minimize distortion |
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48 |
Arc Welding defects, causes and
Remedies. |
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49 |
Arc Welding defects, causes and
Remedies. |
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50 |
Specification of pipes |
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51 |
various types of pipe joints |
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52 |
pipe welding all positions, and
procedure |
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53 |
Difference between pipe welding and
plate welding |
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54 |
Pipe development for Elbow joint, |
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55 |
Pipe development “T” joint |
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56 |
Pipe development Y joint |
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57 |
Pipe development for branch
joint |
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58 |
Manifold system |
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59 |
Gas welding filler rods,
specifications and sizes. |
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60 |
Gas welding fluxes – types and
functions |
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61 |
Gas Brazing & Soldering :
principles, types fluxes & uses |
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62 |
Gas welding defects, causes and
remedies |
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63 |
Electrode types, functions of flux,
coating factor, sizes of electrode |
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64 |
Coding of electrode as per BIS,
AWS |
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65 |
Effects of moisture pick up. -
Storage and baking of electrodes |
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66 |
Special purpose electrodes and their
applications. |
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67 |
Weldability of metals |
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68 |
importance of pre heating, post
heating and maintenance of inter pass temperature. |
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69 |
Classification of steel. - Welding of
low, medium and high carbon steel and alloy steels. |
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70 |
Classification of steel. - Welding of
low, medium and high carbon steel and alloy steels. |
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71 |
Effects of alloying elements on steel
- Stainless steel : types- weld decay and weldability |
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72 |
Brass – types – properties and
welding methods. |
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73 |
Copper – types – properties and
welding methods. |
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74 |
Aluminium and its alloys, properties
and weldability, Welding methods - |
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75 |
Arc cutting & gouging, |
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76 |
Cast iron and its properties
types. |
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77 |
Welding methods of cast iron. |
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78 |
Inspection and Types of Inspection –
Learn how to plan inspection |
https://www.youtube.com/watch?v=kU1WzX6dSjg&feature=youtu.be |
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79 |
Destructive and Non destructive
Testing |
https://www.youtube.com/watch?v=jAM7Tg7Dq1c&feature=youtu.be |
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80 |
Non Destructive Testing [NDT] • Types
Of Non Destructive Test |
https://www.youtube.com/watch?v=8T63o4Rm4Ms&feature=youtu.be |
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81 |
Difference between Destructive
Testing (DT) and Non Destructive testing (NDT) |
https://www.youtube.com/watch?v=F_6FpNHklG4&feature=youtu.be |
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82 |
Dye Penetrant Test (DPT, LPI, LPT,
PT) Theory & Practical |
https://www.youtube.com/watch?v=TpzTIu62z2k&feature=youtu.be |
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83 |
Magnetic Particle Testing (Non
Destructive Testing) |
https://www.youtube.com/watch?v=sfjK1GZ2W9A&feature=youtu.be |
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84 |
Welding Safety |
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85 |
Introduction of GMAW(Mig/Mag)
welding, various other names of the process |
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86 |
Metal Inert Gas Welding (MIG) |
https://www.youtube.com/watch?v=v0SNF8VKAzI&list=PLSWRPBzGkib8hKN-HUiyg4T4GXu-xqAeG&index=9 |
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87 |
Tungsten Inert Gas Welding
(TIG) |
https://www.youtube.com/watch?v=GrmuX0pEFds&feature=youtu.be |
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88 |
GMAW(Mig/Mag) Equipment and
accessories |
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89 |
GMAW(Mig/Mag) plant setting |
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90 |
Tee joint in MAG welding |
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91 |
Difference Between Shielded Metal Arc
Welding (SMAW) and Gas Metal Arc Welding (GMAW) |
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92 |
Difference Between Shielded Metal Arc
Welding (SMAW) and Gas Metal Arc Welding (GMAW) hindi |
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93 |
GMAW(Mig/Mag) welding process
parameters |
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94 |
Types of Metal transfer GMAW
(Mig/Mag) welding |
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95 |
Corner joint in MAG welding |
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96 |
MIG/TIG welding welding electrodes or
filler wire specification |
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97 |
Mig welding machine settings |
https://www.youtube.com/watch?v=E3DVil1w5CQ&feature=youtu.be |
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98 |
Shielding Gases for GMAW(Mig/Mag)
welding |
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99 |
Flux Cored Arc Welding |
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100 |
FCAW - Flux Cored Arc Welding |
https://www.youtube.com/watch?v=WEbgd7FH_nU&feature=youtu.be |
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101 |
Flux Cored Arc Welding |
https://www.youtube.com/watch?v=HuJ3GdO6E48&feature=youtu.be |
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102 |
Edge preparation and weld joints |
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103 |
Weld Joint Preparations | What is
root gap,root face and groove angle| |
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104 |
Nomencalture of Weld |
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105 |
MIG' Welding
,advantages,limitations,Its defects and Causes |
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106 |
Weld Defects | Causes & Remedies
in Hindi (हिन्दी)| welding defect |
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107 |
Welding Defects |
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108 |
Heat input ,calculate Heat Input
during welding |
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109 |
Heat Affected Zone (HAZ) in Welding |
https://www.youtube.com/watch?v=a8k5hfyV4QY&feature=youtu.be |
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110 |
Preheating, Post Weld Heating, and
Peening |
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111 |
Post Weld Heat Treatment |
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112 |
Preheating |
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113 |
Post Weld Heat Treatment |
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114 |
Temperature Sticks / Temperature
indicating Crayons |
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115 |
Welding preheat measurement - How to
use Thermo crayons |
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116 |
Submerged Arc Welding |
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117 |
Submerged Arc Welding, equipment,
advantages & limitations |
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118 |
Submerged Arc Welding Process
(Definition,Principle,working, advantages, limitations) |
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119 |
Electroslag Welding |
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120 |
Electroslag welding, advantages,
limitations, applications |
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121 |
Electrogas Welding |
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122 |
Electro gas welding, advantages,
applications |
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123 |
Thermit Welding |
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124 |
Thermit Welding (Understand Easily
With Animation) |
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125 |
Thermit Welding Process ( Definition,
Working, Equipment, Advantage & Disadvantage) |
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126 |
Thermit Weld Animation, how to join
Railway tracks |
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127 |
GTAW process brief description.
Various other names of the process (TIG, Argonarc) |
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128 |
Power sources for GTAW - AC &DC |
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129 |
ifference between AC and DC welding,
equipments, polarities and applications. |
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130 |
Tungsten electrodes –types &
uses, sizes and preparation |
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131 |
GTAW Torches- types, parts and their
functions |
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132 |
GTAW filler rods and selection
criteria |
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133 |
Edge preparation and fit up. - GTAW
parameters for welding of different thickness of metals |
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134 |
Pulsed TIG welding |
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135 |
pulse parameters slope up and
slope down |
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136 |
Argon / Helium gas properties – uses |
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137 |
Argon gas properties – uses |
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138 |
GTAW Defects, causes and remedy |
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139 |
Friction welding process, equipment
and application |
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140 |
Laser beam welding (LBW) |
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141 |
Electron beam welding(EBW) |
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142 |
Plasma Arc Welding (PAW) and cutting
(PAC) process – equipments and principles of operation. |
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143 |
Types of Plasma arc, advantages and
applications. |
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144 |
Resistance welding process - types,
principles, power sources and welding parameters. - Applications and
limitations. |
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145 |
types, principles, power sources and
welding parameters. - Applications and limitations. |
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146 |
Metalizing – types of metalizing
principles, equipment, advantages, and applications |
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147 |
Manual Oxy – acetylene powder coating
process- principles of operation and applications |
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148 |
Welding codes and standards |
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149 |
Reading of assembly drawing |
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150 |
Welding Procedure Specification (WPS) |
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151 |
Procedure Qualification Record
( PQR) |
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152 |
Hard facing/ surfacing necessity,
surface preparation, various hard facing alloys and advantages of hard facing |
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