Welded Joint(Theory), Machine Design & Industrial Drafting (2141907)

1. Gandhinagar Institute
OF Technology(012)
Subject:- MDIT(2141907)
Active Learning Assignment
Topic Name:- Welded Joint(Theory)
Branch:- Mechanical B-1
Prepared By:- Jani Parth U.(150120119051)
Guided By:- Prof.Manthan Upadhyay

2.  Content
I. Introduction
II. Advantages Of Welded Joints
III. Limitations and example
IV. Classification of welded joints
V. About Different Type Of Weld Joints

3. I. Introduction
 Weld Joint Is Created By Process Of
Welding
 What Is Welding?
 A Welding Is Process Of Joining Two Metallic Parts Together By Heating
With The Use Of Application Of Pressure And Fusion.
 What Is Use OF Weld Of Joints?
 Welded Joints Can Be Used As An Alternative To Riveted Joints.
 While Welded Structures Can Be Used As An Alternative To Casting Or
Forging.

4. II. Advantages OF Welded Joints
 Compared To Other Type Of Joints, The Welded Joint Has Higher Efficiency. An
Efficiency > 95 % Is Easily Possible.
 Since The Added Material Is Minimum, The Joint Has Lighter Weight.
 Welded Joints Have Smooth Appearances.
 Due To Flexibility In The Welding Procedure, Alteration And Addition Are
Possible.
 It Is Less Expensive.
 Forming A Joint In Difficult Locations Is Possible Through Welding.

5. III. Limitations And Example
Limitations
 Welding Component Are Much Poor In Vibration.
 Welding Is Not Use In Different Type Of Material.
Example
 Welding Suitable For Joining Components In Various Machines And
Structures. Some Typically Welded Machine Components Are Listed
Below.
1.Flanges Welded To Shafts And Axles.
2.Heavy Hydraulic Turbine Shafts.
3.Large Gears , Pulleys Flywheels
4.Machine Frames And Bases

6. IV. Classification of welded joints

7. V. About Different Type Of Weld
1. Butt Joints:- It Is Obtained By Placing Plates To Be Joined By Side
With Their Edge.
• Square Butt Weld
 If the thickness of the plates is less
than 5mm,so edges of the plates do
not bevelling, Then We Use S.B.W
• Single V-butt or U-butt Weld
 If the thickness of plates is between
5mm and 12.5mm,so it is necessary
to bevel, Then We Use S.V-B.W OR S.U-B.W

8.  Double V-butt Or Double U-butt Weld: If The Thickness Of
The Plates Is More Than 12.5 MM ,It Is Necessary To Bevel
And Weld The Plates From Both The Sides.
Double V-butt Weld Double U-butt Weld
Single U-butt Weld

9. Fillet or lap weld:-it is obtained by over lapping the two plates
It Is Classified Into Two Type
1.Parallel Fillet Weld
If The Load Axis Is Parallel To The Axis Of The Fillet
2.Transverse Fillet Weld
If The Load Is Perpendicular To The Axis Of The Fillet
1.Single Or Double Transverse Fillet Weld 2.Parallel Fillet Weld

10. Other Type Of Weld:-
This Is Classified Into 3 Types:
1.Corner Weld
2.Edge Weld
3.T-weld

11. VI. Real life use of welds