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PPT PRESENTATION OF WELDING
A Vocational Training
Presentation
on
“Welding”
From
“SIMPLEX CASTING LTD. (UNIT-III)”
BY
SURENDRA KUMAR
(Department Of Mechanical Engineering)
SIMPLEX CASTING Ltd
UNIT-III
223/2,224 TEDESARA,INDUSTURIAL,MUDIPAR ROAD
 INTRODUCTION
It is a fabrication department of simplex or
deportment of production. Internal planning for
sequence of manufacturing of the job. Then cutting
and fitting and welding then finishing
Contents:
Welding
Types of Welding
Gas Welding(Oxy- Acetylene)
Arc Welding(Metal Arc)
Merits & Limitations of Welding Process
Application
Conclusion
Welding:
The Welding is a process of joining two or more,
similar or dissimilar metals by heating them to a
suitable temperature , with or without the
application of pressure, filler materials and flux.
Welding is used for making permanent
joints.
TYPES OF WELDING :
 Plastic Welding or Pressure Welding:
The piece of metal to be joined are heated to a plastic
state and forced together by external pressure
(Ex) -Resistance welding
 Fusion Welding or Non-Pressure Welding:
The material at the joint is heated to a molten state and
allowed to solidify
(Ex)- Gas welding, Arc welding
CLASSIFICATION OF WELDING PROCESSES:
Gas welding(Oxy- Acetylene)
Arc welding(Metal Arc)
Resistance welding
Solid state welding
Thermo-chemical welding
Low Temperature welding
Gas Welding:
Gas Welding is a fusion welding process, in which the
heat for welding is obtained by the combustion of
oxygen and fuel the gas may be acetylene ,hydrogen or
propene .
Types:
• Oxy- Acetylene
• Air-Acetylene
• Oxy-Hydrogen
• Oxy-Fuel
Oxy-Acetylene Welding:
When a combination of
Oxygen and acetylene is
used in correct
proportions to produce an
Intense gas flame, the
process is known as
oxy-acetylene welding.
Gas Welding Equipment :
1. Gas Cylinders
Pressure-
Oxygen – 125 kg/cm2
Acetylene – 16 kg/cm2
2. Regulators
• Working pressure of oxygen 1 kg/cm2
• Working pressure of acetylene 0.15 kg/cm2
• Working pressure varies depends upon the thickness of the work pieces
welded.
3. Pressure Gauges
4. Hoses
5. Welding torch
6. Check valve
7. Non return valve
Advantages:
 Portable and most versatile process.
 Better control over the temperature.
 Suitable to weld dissimilar matter.
 Low cost & maintenance.
Disadvantages:
 Not suitable for heavy section.
 Less working temperature of gas flame.
 Slow rate of heating.
Arc Welding:
“Arc welding is a fusion welding process in which the
heat required to fuse the metal is obtain from the
electric arc between the base metal and an electrode.
Types:
1. Metal Arc Welding
2. Submerged Arc Welding
3. Tungsten Inert Gas Welding
4. Metal Inert Gas Welding
Equipment:
A welding generator (D.C.) or Transformer (A.C.)
Two cables- one for work and one for electrode
Electrode holder
Electrode
Protective shield
Gloves
Wire brush
Chipping hammer
Goggles
Metal Arc Welding :
Uses an electric arc to
coalesce metals
Arc welding is the most
common method of
welding metals
Electricity travels from
electrode to base metal
to ground
Advantages and Disadvantages of Arc Welding
Advantages
 Most efficient way to join
metals
 Lowest-cost joining
method
 Affords lighter weight
through better utilization
of materials
 Joins all commercial
metals
 Provides design flexibility
Disadvantages
 Manually applied,
therefore high labor cost.
 Need high energy causing
danger
 Not convenient for
disassembly.
 Defects are hard to detect
at joints.
Applications:
It is used in the manufacture of automobile
bodies.
Aircraft Frames
Railway Wagons
Machine Frames
Structural works, tanks, furniture, boilers,
general repair work and ship building etc.
Conclusion:
In these we learn about most popular welding
type uses in industries.
A good weld is always strong.
General welding equipment is not very costly.
 Portable welding equipment are available.
A large number of metal and alloy both similar and
dissimilar can be join by welding.
Welding permits considerable freedom in design.
PPT PRESENTATION OF WELDING
PPT PRESENTATION OF WELDING

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PPT PRESENTATION OF WELDING

  • 2. A Vocational Training Presentation on “Welding” From “SIMPLEX CASTING LTD. (UNIT-III)” BY SURENDRA KUMAR (Department Of Mechanical Engineering)
  • 3. SIMPLEX CASTING Ltd UNIT-III 223/2,224 TEDESARA,INDUSTURIAL,MUDIPAR ROAD  INTRODUCTION It is a fabrication department of simplex or deportment of production. Internal planning for sequence of manufacturing of the job. Then cutting and fitting and welding then finishing
  • 4. Contents: Welding Types of Welding Gas Welding(Oxy- Acetylene) Arc Welding(Metal Arc) Merits & Limitations of Welding Process Application Conclusion
  • 5. Welding: The Welding is a process of joining two or more, similar or dissimilar metals by heating them to a suitable temperature , with or without the application of pressure, filler materials and flux. Welding is used for making permanent joints.
  • 6. TYPES OF WELDING :  Plastic Welding or Pressure Welding: The piece of metal to be joined are heated to a plastic state and forced together by external pressure (Ex) -Resistance welding  Fusion Welding or Non-Pressure Welding: The material at the joint is heated to a molten state and allowed to solidify (Ex)- Gas welding, Arc welding
  • 7. CLASSIFICATION OF WELDING PROCESSES: Gas welding(Oxy- Acetylene) Arc welding(Metal Arc) Resistance welding Solid state welding Thermo-chemical welding Low Temperature welding
  • 8. Gas Welding: Gas Welding is a fusion welding process, in which the heat for welding is obtained by the combustion of oxygen and fuel the gas may be acetylene ,hydrogen or propene . Types: • Oxy- Acetylene • Air-Acetylene • Oxy-Hydrogen • Oxy-Fuel
  • 9. Oxy-Acetylene Welding: When a combination of Oxygen and acetylene is used in correct proportions to produce an Intense gas flame, the process is known as oxy-acetylene welding.
  • 10. Gas Welding Equipment : 1. Gas Cylinders Pressure- Oxygen – 125 kg/cm2 Acetylene – 16 kg/cm2 2. Regulators • Working pressure of oxygen 1 kg/cm2 • Working pressure of acetylene 0.15 kg/cm2 • Working pressure varies depends upon the thickness of the work pieces welded. 3. Pressure Gauges 4. Hoses 5. Welding torch 6. Check valve 7. Non return valve
  • 11. Advantages:  Portable and most versatile process.  Better control over the temperature.  Suitable to weld dissimilar matter.  Low cost & maintenance. Disadvantages:  Not suitable for heavy section.  Less working temperature of gas flame.  Slow rate of heating.
  • 12. Arc Welding: “Arc welding is a fusion welding process in which the heat required to fuse the metal is obtain from the electric arc between the base metal and an electrode. Types: 1. Metal Arc Welding 2. Submerged Arc Welding 3. Tungsten Inert Gas Welding 4. Metal Inert Gas Welding
  • 13. Equipment: A welding generator (D.C.) or Transformer (A.C.) Two cables- one for work and one for electrode Electrode holder Electrode Protective shield Gloves Wire brush Chipping hammer Goggles
  • 14. Metal Arc Welding : Uses an electric arc to coalesce metals Arc welding is the most common method of welding metals Electricity travels from electrode to base metal to ground
  • 15. Advantages and Disadvantages of Arc Welding Advantages  Most efficient way to join metals  Lowest-cost joining method  Affords lighter weight through better utilization of materials  Joins all commercial metals  Provides design flexibility Disadvantages  Manually applied, therefore high labor cost.  Need high energy causing danger  Not convenient for disassembly.  Defects are hard to detect at joints.
  • 16. Applications: It is used in the manufacture of automobile bodies. Aircraft Frames Railway Wagons Machine Frames Structural works, tanks, furniture, boilers, general repair work and ship building etc.
  • 17. Conclusion: In these we learn about most popular welding type uses in industries. A good weld is always strong. General welding equipment is not very costly.  Portable welding equipment are available. A large number of metal and alloy both similar and dissimilar can be join by welding. Welding permits considerable freedom in design.

Editor's Notes

  1. REFERENCE