Type of defects and their significance, Mechanical Engineering

Assignment Help:

TYPE OF DEFECTS AND THEIR SIGNIFICANCE

 

Defects in weldments in general can be classified as follows:

I. Defects involving inadequate bonding

  • Lack of fusion
  • Incomplete penetration

 


II. Foreign inclusions

  • Slag
  • Oxide films
  • Tungsten

 


III. Geometric Defects

  • Undercut
  • Excessive reinforcement
  • Burn through or excessivepenetration
  • Distortion
  • Improper weld profile.

 


IV. Metallurgical Defects

  • Cracks
  • Gas porosity
  • Arc strikes
  • Embrittlement
  • Structural notches

Related Discussions:- Type of defects and their significance

Relations Among Load, 5. Calculate and draw the Shear force and Bending mom...

5. Calculate and draw the Shear force and Bending moment diagrams for the loaded beam and determine the maximum moment M and its location x from left end

Seam welding-selection of parameters, Seam Welding-Selection of parameters ...

Seam Welding-Selection of parameters The selection of parameters for seam welding depends mainly on: weld nugget size which is related to weld strength. probability of

Metal transfer in co2 welding, METAL TRANSFER IN CO2 WELDING In CO 2 wel...

METAL TRANSFER IN CO2 WELDING In CO 2 welding, two distinct types of metal transfers are identified viz. short circuiting transfer and free flight globular transfer. Short Cir

Quantum mechanics, A ball is dropped from a height .If it takes0.200 second...

A ball is dropped from a height .If it takes0.200 second to cross the last 6.00 m before hitting the ground ,find the height  from which it was dropped . Ans) We need to find H

Show corrosion loss, Q. Show Corrosion Loss? Additional metal thickness...

Q. Show Corrosion Loss? Additional metal thickness must be added, to compensate for anticipated loss due to metal reacting with the environments to which it is subjected, inclu

Seam welding, Seam Welding Seam welding is different from spot welding ...

Seam Welding Seam welding is different from spot welding by the fact that roller type electrodes are used in the former case. The principle and process of welding are the same

Bund and dike capacity, Bund / dike capacity is typically covered by local ...

Bund / dike capacity is typically covered by local codes and regulations, however some general principles for liquid storage compounds are: • The net capacity of a bunded / dik

What is fusion bonding, Q. What is Fusion Bonding? Fusion Bonding shall...

Q. What is Fusion Bonding? Fusion Bonding shall refer to the fusion bond coating process which utilizes heat to melt adhere the coating material to the metal surface. Fusion Bo

Polar modulus , Pola r Modulus(Z p ):   It is the ratio of polar m...

Pola r Modulus(Z p ):   It is the ratio of polar moment of the inertia to outer radius. Z p = J / R Polar Modulus of solid body ( Z p ) =[  ?/32. D 4 ]/ D

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd