## Credits

University Institute of Technology RGPV (UIT - RGPV), Bhopal
Rajat Vishwakarma has created this Calculator and 400+ more calculators!
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## Discharge duration of single pulse Solution

STEP 0: Pre-Calculation Summary
Formula Used
Sparking time = (Volume of crater*Ultimate Tensile Strength)/(6.25*10^6*(Mean current setting^(3/2)))
τs = (V*Sut)/(6.25*10^6*(Im^(3/2)))
This formula uses 3 Variables
Variables Used
Volume of crater - Volume of crater is defined as the Volume of crater made by an electric spark during EDM. (Measured in Square Millimeter)
Ultimate Tensile Strength - Ultimate tensile strength (UTS) is the maximum stress that a material can withstand while being stretched or pulled. (Measured in Megapascal)
Mean current setting - Mean current setting is the current set to mean current value during unconventional machining of EDM. (Measured in Ampere)
STEP 1: Convert Input(s) to Base Unit
Volume of crater: 100 Square Millimeter --> 0.0001 Square Meter (Check conversion here)
Ultimate Tensile Strength: 100 Megapascal --> 100000000 Pascal (Check conversion here)
Mean current setting: 1 Ampere --> 1 Ampere No Conversion Required
STEP 2: Evaluate Formula
Substituting Input Values in Formula
τs = (V*Sut)/(6.25*10^6*(Im^(3/2))) --> (0.0001*100000000)/(6.25*10^6*(1^(3/2)))
Evaluating ... ...
τs = 0.0016
STEP 3: Convert Result to Output's Unit
0.0016 Second --> No Conversion Required
0.0016 Second <-- Sparking time
(Calculation completed in 00.016 seconds)

## < 6 Volume of crater made by an electric spark Calculators

Diameter of crater
Larger diameter = sqrt((8*(Volume of crater-(pi/6)*(Depth of machined surface^3)))/(pi*Depth of machined surface)) Go
Mean current setting from crater volume
Mean current setting = ((Volume of crater*Ultimate Tensile Strength)/(6.25*10^6*Sparking time))^(2/3) Go
Discharge duration of single pulse
Sparking time = (Volume of crater*Ultimate Tensile Strength)/(6.25*10^6*(Mean current setting^(3/2))) Go
Ultimate tensile strength of work piece material
Ultimate Tensile Strength = (6.25*10^6*Sparking time*(Mean current setting^(3/2)))/Volume of crater Go
Volume of crater related to mean current setting
Volume of crater = (3.25*10^6/Ultimate Tensile Strength)*Sparking time*Mean current setting^(3/2) Go
For copper electrode and kerosene dielectric
Volume of crater = 1.42*Capacitance*Discharge voltage Go

### Discharge duration of single pulse Formula

Sparking time = (Volume of crater*Ultimate Tensile Strength)/(6.25*10^6*(Mean current setting^(3/2)))
τs = (V*Sut)/(6.25*10^6*(Im^(3/2)))

## What factors affects surface finish during EDM ?

The amount of material removed and the surface finish produced is dependent upon the current in the spark. The material removed by the spark can be assumed to be a crater. The amount removed therefore will depend upon the crater depth, which is directly proportional to the current. Thus as the material removed increases and at the same time the surface finish also decreases. However, decreasing the current in the spark, but increasing its frequency will improve the surface finish in view of the small crater size, but at the same time the material removal rate can be maintained by increasing the frequency.

## How to Calculate Discharge duration of single pulse?

Discharge duration of single pulse calculator uses Sparking time = (Volume of crater*Ultimate Tensile Strength)/(6.25*10^6*(Mean current setting^(3/2))) to calculate the Sparking time, The Discharge duration of single pulse formula is defined as time for which a spark can be sustained before breaking and generation of a new spark. Sparking time is denoted by τs symbol.

How to calculate Discharge duration of single pulse using this online calculator? To use this online calculator for Discharge duration of single pulse, enter Volume of crater (V), Ultimate Tensile Strength (Sut) & Mean current setting (Im) and hit the calculate button. Here is how the Discharge duration of single pulse calculation can be explained with given input values -> 0.0016 = (0.0001*100000000)/(6.25*10^6*(1^(3/2))).

### FAQ

What is Discharge duration of single pulse?
The Discharge duration of single pulse formula is defined as time for which a spark can be sustained before breaking and generation of a new spark and is represented as τs = (V*Sut)/(6.25*10^6*(Im^(3/2))) or Sparking time = (Volume of crater*Ultimate Tensile Strength)/(6.25*10^6*(Mean current setting^(3/2))). Volume of crater is defined as the Volume of crater made by an electric spark during EDM, Ultimate tensile strength (UTS) is the maximum stress that a material can withstand while being stretched or pulled & Mean current setting is the current set to mean current value during unconventional machining of EDM.
How to calculate Discharge duration of single pulse?
The Discharge duration of single pulse formula is defined as time for which a spark can be sustained before breaking and generation of a new spark is calculated using Sparking time = (Volume of crater*Ultimate Tensile Strength)/(6.25*10^6*(Mean current setting^(3/2))). To calculate Discharge duration of single pulse, you need Volume of crater (V), Ultimate Tensile Strength (Sut) & Mean current setting (Im). With our tool, you need to enter the respective value for Volume of crater, Ultimate Tensile Strength & Mean current setting and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well. Let Others Know