Electromagnetic coil

Hello,

I need for an electromagnet that can be moving an iron pipe inside when I connect power to the coil. When power off a spring push the iron pipe back.
How can I calculate the turns of coil, the current, the wire square and the spring's force? I am going to use 48 V DC.
I know the weight of pipe and its dimensions.

Bird

bird777 said:

I know the weight of pipe and its dimensions.Bird

Click to expand...

OK, keep them secret!

sorry

Sorry I don't think that is important , but here is it:

The pipe diameter is 80 mm, length is 30 mm.
Is it important the thikness of the pipe wall ? Because a plastic part will be inside of the pipe.

Does the pipe encounter any friction when it is moved? How far do you want to move it, and how fast?

Roff said:

Does the pipe encounter any friction when it is moved? How far do you want to move it, and how fast?

Click to expand...

and which direction: horizontal or vertical?

With a diameter of 80mm and a length of 30mm I wouldn't talk about a pipe. The stroke must not be more than half the length for longitudinal stability.
The weight would be interesting to know, too.