Mean current setting from crater volume Calculator

✖Volume of crater is defined as the Volume of crater made by an electric spark during EDM.ⓘ Volume of Crater [V]			+10% -10%
✖Ultimate Tensile Strength (UTS) is the maximum stress that a material can withstand while being stretched or pulled.ⓘ Ultimate Tensile Strength [S_ut]			+10% -10%
✖Sparking time is defined as the time for which a spark is sustained.ⓘ Sparking time [τ_s]			+10% -10%

✖Mean current setting is the current set to mean current value during unconventional machining of EDM.ⓘ Mean current setting from crater volume [I_m]

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Formula

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Mean current setting from crater volume

Formula

`"I"_{"m"} = (("V"*"S"_{"ut"})/(3.25*"τ"_{"s"}))^(2/3)`

Example

`"1.441538A"=(("3mm²"*"15N/mm²")/(3.25*"8s"))^(2/3)`

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Mean current setting from crater volume Solution

STEP 0: Pre-Calculation Summary

Formula Used

Mean Current Setting = ((Volume of Crater*Ultimate Tensile Strength)/(3.25*Sparking time))^(2/3)
I_m = ((V*S_ut)/(3.25*τ_s))^(2/3)
This formula uses 4 Variables

Variables Used

Mean Current Setting - (Measured in Ampere) - Mean current setting is the current set to mean current value during unconventional machining of EDM.
Volume of Crater - (Measured in Square Meter) - Volume of crater is defined as the Volume of crater made by an electric spark during EDM.
Ultimate Tensile Strength - (Measured in Pascal) - Ultimate Tensile Strength (UTS) is the maximum stress that a material can withstand while being stretched or pulled.
Sparking time - (Measured in Second) - Sparking time is defined as the time for which a spark is sustained.

STEP 1: Convert Input(s) to Base Unit

Volume of Crater: 3 Square Millimeter --> 3E-06 Square Meter (Check conversion here)
Ultimate Tensile Strength: 15 Newton per Square Millimeter --> 15000000 Pascal (Check conversion here)
Sparking time: 8 Second --> 8 Second No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

I_m = ((V*S_ut)/(3.25*τ_s))^(2/3) --> ((3E-06*15000000)/(3.25*8))^(2/3)

Evaluating ... ...

I_m = 1.44153805091699

STEP 3: Convert Result to Output's Unit

1.44153805091699 Ampere --> No Conversion Required

FINAL ANSWER

1.44153805091699 ≈ 1.441538 Ampere <-- Mean Current Setting

(Calculation completed in 00.004 seconds)

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Home » Engineering » Production Engineering » Unconventional machining processes » Electro Discharge Machining (EDM) » Volume of crater made by an electric spark » Mean current setting from crater volume

Credits

Created by Rajat Vishwakarma

University Institute of Technology RGPV (UIT - RGPV), Bhopal

Rajat Vishwakarma has created this Calculator and 400+ more calculators!

Verified by Anshika Arya

National Institute Of Technology (NIT), Hamirpur

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< 5 Volume of crater made by an electric spark Calculators

Diameter of crater

Go Larger Diameter = sqrt((8*(Volume of Crater-(pi/6)*Depth of Machined Surface^3))/(pi*Depth of Machined Surface))

Mean current setting from crater volume

Go Mean Current Setting = ((Volume of Crater*Ultimate Tensile Strength)/(3.25*Sparking time))^(2/3)

Volume of crater related to mean current setting

Go Volume of Crater = 3.25*10^6/Ultimate Tensile Strength*Sparking time*Mean Current Setting^(3/2)

Discharge duration of single pulse

Go Sparking time = (Volume of Crater*Ultimate Tensile Strength)/(3.25*Mean Current Setting^(3/2))

Ultimate tensile strength of work piece material

Go Ultimate Tensile Strength = (3.25*Sparking time*Mean Current Setting^(3/2))/Volume of Crater

Mean current setting from crater volume Formula

Mean Current Setting = ((Volume of Crater*Ultimate Tensile Strength)/(3.25*Sparking time))^(2/3)
I_m = ((V*S_ut)/(3.25*τ_s))^(2/3)

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 Mean current setting from crater volume?

Mean current setting from crater volume calculator uses Mean Current Setting = ((Volume of Crater*Ultimate Tensile Strength)/(3.25*Sparking time))^(2/3) to calculate the Mean Current Setting, The Mean current setting from crater volume formula is defined as the mean current setting according to optimum metal machining rate. Mean Current Setting is denoted by I_m symbol.

How to calculate Mean current setting from crater volume using this online calculator? To use this online calculator for Mean current setting from crater volume, enter Volume of Crater (V), Ultimate Tensile Strength (S_ut) & Sparking time (τ_s) and hit the calculate button. Here is how the Mean current setting from crater volume calculation can be explained with given input values -> 9.405718 = ((3E-06*15000000)/(3.25*8))^(2/3).

FAQ

What is Mean current setting from crater volume?

The Mean current setting from crater volume formula is defined as the mean current setting according to optimum metal machining rate and is represented as I_m = ((V*S_ut)/(3.25*τ_s))^(2/3) or Mean Current Setting = ((Volume of Crater*Ultimate Tensile Strength)/(3.25*Sparking time))^(2/3). 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 & Sparking time is defined as the time for which a spark is sustained.

How to calculate Mean current setting from crater volume?

The Mean current setting from crater volume formula is defined as the mean current setting according to optimum metal machining rate is calculated using Mean Current Setting = ((Volume of Crater*Ultimate Tensile Strength)/(3.25*Sparking time))^(2/3). To calculate Mean current setting from crater volume, you need Volume of Crater (V), Ultimate Tensile Strength (S_ut) & Sparking time (τ_s). With our tool, you need to enter the respective value for Volume of Crater, Ultimate Tensile Strength & Sparking time and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

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