ASSIGNMENT

 ASSIGNMENT  N0 -1

LAST DATE OF SUBMISSION-4/10/2020 

Sub Name - Advance Welding process

(a)   Define welding metallurgically ..Name some joining processes other than welding . List the criterion for selection of welding process.

(b)   What is an Arc ? How is it produced?

(c)    Compare AC and DC welding

(d)   What do you understand by polarity in welding ? Which polarity  will you select when welding (i) Aluminum (ii) copper

(e)   Draw characteristic curve of arc and power resources .Explain how stability maintenance could be understood achieved.

(f)     State the effect of current and voltage on quality of weld.

(g)  Explain different termonology used in welding process

(h) Explain different types of joints with diagram 

(i) write a short  note on a)  TIG     b)  MIG  

(J) classify welding process

                                                                                        ASSIGNMENT  N0 -2

Last date of submission  - 25/10/2020

   Q1 What is plasma arc welding? Explain giving suitable sketches. Also give its advantage over other welding techniques.

   

Q2   Explain the terms “transferred modes “ and “Non transferred modes” used in plasma arc welding .

 Q3  Explain the principles of Laser and write uses and application of LASER .Describe with sketches the principles and working of LBM and mention its advantages

Q4  Describe with sketches the principle and working of Electron Beam welding and mentions its      advantages and applications?

Q5Draw the set up for ultrasonic welding (USW) and explain the use of various components of the setup .What is the advantages and limitations of USW?

Q6 Define  resistant  welding  and explain different types  of resistant welding  process

Q7 Write a short  note  on  a) Electroslag welding   b) Submerged Arc welding  c) Types of friction welding   

 

Q8 Difference between soldering  and welding process

Q9 What are the different forces and types of metal transfer in Arc welding 

Q

Q                                                         ASSIGNMENT  N0 -3

Ex    Q1 Explain the following terms in context to Explosive welding a) Buffer plate  b)Flyer plate c)Stand off  distance  d) critical velocity f) Impact velocity     

          Q2 Define underwater welding process and classify them

         Q3 Write a short  note  on  a) Hard  facing    b) Metallising    c)  cladding 

q4     Q4  Define  Distortion.Explain different types of distortion   

         Q5 What are the steps taken to reduce different types of distortion  

     

          Q6   Explain different types of welding  defects with there remedies

qq      Q7   Write  a  short   note  on  a) Life  predication   b) welding  of pipeline 

qq     Q8  What are the different consideration while designing a welding joint 

qq      Q9  Define HAZ and different microstructure  in  HAZ