Answer / jacob stephen

Electric discharge machining

Answer / rajkumar

electerical discharge machine

Answer / suraj singh

electric discharge machining

Answer / sudheendra

Process.—During the EDM process, energy from the sparks created between
the electrode and the workpiece is dissipated by the melting and vaporizing of the workpiece
material preferentially, only small amounts of material being lost from the electrode.
When current starts to flow between the electrode and the work, the dielectric fluid in the
small area in which the gap is smallest, and in which the spark will occur, is transformed
into a plasma of hydrogen, carbon, and various oxides. This plasma forms a conducting
passageway, consisting of ionized or electrically charged particles, through which the
spark can form between the electrode and the workpiece. After current starts to flow, to
heat and vaporize a tiny area, the striking voltage is reached, the voltage drops, and the
field of ionized particles loses its energy, so that the spark can no longer be sustained. As
the voltage then begins to rise again with the increase in resistance, the electrical supply is
cut off by the control, causing the plasma to implode and creating a low-pressure pulse that
draws in dielectric fluid to flush away metallic debris and cool the impinged area. Such a
cycle typically lasts a few microseconds (millionths of a second, or μs), and is repeated
continuously in various places on the workpiece as the electrode is moved into the work by
the control system.

Identify the parts of propeller

1 Answers   RRB,

---

Explain the difference between the flight of a plane and a helicopter?

0 Answers  

---

How do you detect earth by lam p?

0 Answers   RRB,

---

i need to prepare for iocl exam.pls provide me the book names for apptitude section which include reasoning,numerical ability,logical deductions......

0 Answers  

---

What is the diffrent between centrifugal and positive displacement pump

4 Answers  

---

Hoew to represent unilateral tolerance, as Bilateral tolerance in engg drawing...? Example: 1.295 +0.000 and -0.10, as unitolerance, write the value in bilateral tolerance?

0 Answers  

---

why constant pressure is consider for thermal diffusivity??

0 Answers  

---

If anybody have the ref. design book of the 3 point cylindrical rolling with sheet thickness of 2.3 mm & 67 mm internal diameter legth of 80 mm

0 Answers  

---

what is the fuction of asstt. rigman drilling

0 Answers   ONGC,

---

please send me HPCL last question papers for Mechanical engineering ... to levakuvidyasagar@gmail.com ...

1 Answers   HPCL, Reliance,

---

I got i20 for university of bridgeport,university of new heaven and eastern michigan university.Please tell me visa success rate for these universities.And I want to go to Connecticut.At that place two universities are avaliable one is new heaven and the another one is bridgeport.Which is the best? Please give reply as early as possible.

0 Answers  

---

what is the diffrence between a shaper machine and aplanner machine

8 Answers   HAL,

---