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

Indian standard (is 812-1957)-welding definition, As per Indian standard (I...

As per Indian standard (IS 812-1957) Define weld as "a union between two pieces of a metal at faces rendered plastic or liquid by heat or by pressure or both filler metal may b

Evaluate the heat input per day, The input-output curve of a 60 MW power st...

The input-output curve of a 60 MW power station is provided by : I = 10 6 [8 + 8L + 0.4L 2 ] Kcl/hour where I is the input in the Kcal/hour and L is the load in MW. (a) Ev

Determine the stresses acting on the plan, Using Mohr's Circle Method deter...

Using Mohr's Circle Method determine the stresses acting on the plan as shown in figure. Also write the procedure.

Wave, What is wave? How many type of the waves?

What is wave? How many type of the waves?

Equilibrium of rigid bodies, Ask question #MinimumThe man is pulling a load...

Ask question #MinimumThe man is pulling a load of 4kg with one arm held as shown. Determine the force FH this exerts on the humerus bone H, and the tension developed in the biceps

Determine the root of equation, Calculate the value of ∫ Π/2 sinx dx by Si...

Calculate the value of ∫ Π/2 sinx dx by Simpson's 1/3 rule using 11 ordinates. Determine the root of equation xe x = cosx using secant method correct to four decimal places.

Thermodynamic 1st law, What is the diff between system underfoing cycle and...

What is the diff between system underfoing cycle and system undergoing process

Resultant of non coplanar concurrent force system, Resultant of Non coplana...

Resultant of Non coplanar concurrent force system: How do you find resultant of Non coplanar concurrent force system? Sol.: The resultant of non concurrent force system

What is product definition data interface, Product Definition Data Interfa...

Product Definition Data Interface (PDDI) IGES provided a very practical first solution for CAD data exchange, complete with an exchange file format. It was remarkable in the sp

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