Engineering, 19.08.2020 14:01 jakhunter354

B1) 20 pts. The thickness of each of the two sheets to be resistance spot welded is 3.5 mm. It is desired to form a weld nugget that is 5.5 mm in diameter and 5.0 mm thick after 0.3 sec welding time. The unit melting energy for a certain sheet metal is 9.5 J/mm3 . The electrical resistance between the surfaces is 140 micro ohms, and only one third of the electrical energy generated will be used to form the weld nugget (the rest being dissipated), determine the minimum current level required.

Answers: 3

Show answers

Other questions on the subject: Engineering

Engineering, 04.07.2019 18:10, wirchakethan23

Hydraulic fluid with a sg. of 0.78 is flowing through a 1.5 in. i. d. pipe at 58 gal/min. the fluid has an absolute viscosity of 11.8 x 105 lbf-sec/ft2. is the flow laminar, turbulent or within the critical range? give both a numerical reynolds number and a term answer.

Answers: 3

continue

Engineering, 04.07.2019 19:10, phantomlizz3233

In general, how do thermosetting plastics compare to thermoplastics in mechanical and physical properties?

Answers: 3

continue

Engineering, 04.07.2019 19:10, Lexi5170

A)-explain briefly the importance of standards in engineering design. b)- what is patent? c)-explain the relationship between these standards: b. s. and b. s.en d)- in engineering design concepts, types of loads and how they act are important factors. explain.

Answers: 3

continue

Engineering, 04.07.2019 19:20, carterdaw

Aseries piping system conveys methyl alcohol. the system consists of 70 m of 1- nominal pipe follow by 50 m of 2-nominal pipe, both schedule 40 commercial steel. the 1-nominal pipe contains 3 90° elbows (regular) anda fully open gate valve, all threaded. the pressure drop through the system is 150 kpa. determine the volume flow rate through the system that is horizontally laid.

Answers: 1

continue

You know the right answer?

B1) 20 pts. The thickness of each of the two sheets to be resistance spot welded is 3.5 mm. It is de...