Quality of welds produced by submerged arc welding, Mechanical Engineering

Assignment Help:

a) You have been assigned to design a robotics spot welding experiment for low carbon steel sheets. You found an experimental power source for spot welding process which is designed to deliver current as a ramp function of time: I = 100,000 t, where I = amp and t = sec. At the end of the power-on time, the current is stopped abruptly. You have decided to use this power source for you experiment. The sheet metal being spot welded is found to have unit melting energy = 10 J/mm3 and resistance R = 85 micro-ohms. The desired weld nugget size is: diameter = 4 mm and thickness = 2 mm (assume a disc-shaped nugget). You assumed that 25% of the energy generated from the power source will be used to form the weld nugget. In order to set up the process, it is required to determine the power-on time the current must be applied in order to perform this spot welding operation. What is the power-on time?

b) Why is the quality of welds produced by submerged arc welding very good?

c) Which materials can be friction stir welded, and which cannot? Explain your answer.

 

d) List the joining methods that would be suitable for a joint that will encounter high stresses and will need to be disassembled several times during the product life, and rank the methods.


Related Discussions:- Quality of welds produced by submerged arc welding

Pumps, three indications of centrifugal pump cavitating

three indications of centrifugal pump cavitating

Determine about the extent of excavation, Determine about the extent of exc...

Determine about the extent of excavation The extent of excavation depends upon the construction problems like dewatering and uplift. In extreme cases anchoring of the box may b

Swot Analysis, what are the threats of mechanical engineering ?

what are the threats of mechanical engineering ?

Priority rules-conventional priority rules, Priority Rules A main conce...

Priority Rules A main concern rule is an algorithm that evaluates a priority number PN j for all operation j which enters the queue in front of a station (processing, cell, wo

Air filter cleaning steps, Air Filter Cleaning :  Air filter filters the a...

Air Filter Cleaning :  Air filter filters the air, which enters into the carburetor. Then, this air mixes with fuel and this mixture enters into engine. If air is not clean, it wi

Define edge joints, Edge joints: The flanged edge joint is suit- able for p...

Edge joints: The flanged edge joint is suit- able for plate 1/4 inch or less in thickness and can only sustain light loads. Edge preparation for this joint may be done.

Compaction-manufacturing methods of ceramics, Compaction This is carri...

Compaction This is carried out in several manners that might occupy the addition of a binder or lubricant and application of pressure. Sintering is densification of assembled

Matter, Matter, particle and body: Matter is anything which occupies s...

Matter, particle and body: Matter is anything which occupies space, possesses mass provides resistance to any stress, example Iron, air, stone, Water. A body of negligible

Design temporary storage, Q. Design Temporary Storage? It is sometimes ...

Q. Design Temporary Storage? It is sometimes acceptable to store drums temporarily on spill containment pallets. Each pallet should be capable of capturing the contents of at l

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