Seam welding-selection of parameters, Mechanical Engineering

Assignment Help:

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 porosity.
  • designed surface condition of the finished weld.

 

The selection is usually done by first assuming a welding speed and electrode force. Then, suitable current is arrived at by trial and error, till satisfactory weld is obtained. Guidelines for the selection can be obtained from the hand books. To achieve a leak tight seam, the overlap should be 15 % to 20 % of the nugget length, the penetration must be in the range of 30 % to 80 %. The effects of various parameters viz., current, electrode force, time and preweld cleaning are the same as in spot welding. The edges of the electrodes are trimmed after their usage for a particular period. This can be done in a lathe. In some welding machines, forming rollers are fitted for this purpose.


Related Discussions:- Seam welding-selection of parameters

Numerical problems based on the cantilever beam, Numerical Problems Based o...

Numerical Problems Based on the Cantilever Beam: Draw the SF and BM diagram for the beam as shown in the figure given below. Also indicate principal values on diagrams.

Locomotive boiler, advantages and disadvantages of locomotive boiler

advantages and disadvantages of locomotive boiler

Explain the effect of cutting speed, Explain the Effect of Cutting Speed ...

Explain the Effect of Cutting Speed Increase in cutting speed improves the surface finish due to the continuous reduction in built up edge. The curve a represents the machining

Determine the heat transfer, (a) Show that all reversible engines operating...

(a) Show that all reversible engines operating between the same source and sink will have same efficiency. (b) A reversible heat engine operates between two reservoirs at temper

Determine the fatigue strength of medium carbon steel, Determine the fatigu...

Determine the fatigue strength of medium carbon steel: For determining the fatigue strength of medium carbon steel 15 specimens, identical in all respect were tested in cantil

Mechanical properties of materials, A tensile test on a specimen having an ...

A tensile test on a specimen having an initial diameter of 13.11 mm and an initial gauge length of 200.0 mm, gave the following data:

Illustrate dynamically equivalent system, Illustrate with required expressi...

Illustrate with required expression for dynamically equivalent system. Illustrate in detail about the Balancing of Radial Engines.

Advance dynamics, Ask question i have an assisgment can you please tell me ...

Ask question i have an assisgment can you please tell me how much does it cost #Minimum 100 words accepted#

Define pressure- retaining components, Q. Define Pressure- retaining compon...

Q. Define Pressure- retaining components? Components acting as pressure envelope or boundary; breach of this envelope or boundary would lead to loss of containment and discharg

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