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

Exhaust manifold-basic components of engine , Exhaust Manifold : The pipe ...

Exhaust Manifold : The pipe which connects the exhaust system to the exhaust valve of the engine through which the products of combustion escape into the atmosphere is called the

Show produced water de-oiling unit, Q. Explain about water De-Oiling proces...

Q. Explain about water De-Oiling process? The De-Oiling process consists of three major components: The Surge and Skim Tank which reduces PW oil content to 100 ppm I

Represent moment graphically - mechanics, Represent moment Graphically: ...

Represent moment Graphically: How you represent moment Graphically? Sol.: Consider force F which is represented in magnitude and direction, by   line AB . L

Give the basic concept of heat engine, (a) Can you explain the limitations ...

(a) Can you explain the limitations of 1 s t law of thermodynamics ? Describe thermal energy Reservoir, heat sink and heat source. (b) Give the basic concept of Heat Engine, Ref

Find out change in diameter, Find out change in diameter: A cylindrica...

Find out change in diameter: A cylindrical shell, 0.8 m in a diameter and 3 m long is along with 10 mm wall thickness. If the shell is subjected into an internal pressure of 2

Clutch spring height-clutch slipping, Clutch spring height: Check clutch s...

Clutch spring height: Check clutch spring height with a Vernier caliper. Spring height should be of minimum height of 25.55 mm.

How many types of foundations are there, How many types of Foundations are ...

How many types of Foundations are there Foundations are broadly classified into two types, viz., shallow and deep foundations with respect to  the width (B) and depth (D) below

Can you explain about fuel oil and dextrin, Q. Can you explain about Fuel O...

Q. Can you explain about Fuel Oil and Dextrin? Fuel Oil : It improves the mould ability of sand. Iron Oxide: It develops hot strength. Dextrin: It increases air sett

Motion of two bodies - rough surface and rough pulley, Motion of two bodies...

Motion of two bodies - rough surface and rough pulley: THE HORIZONTAL SURFACE IS ROUGH AND THE STRING IS PASSING OVER ROUGH PULLEY. Figure shows two weights W 1 and W 2 c

Thermodynamics, show that work is a path function and not a point funtion ?...

show that work is a path function and not a point funtion ?

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