Open Source Ecology Heat Exchange Coil Winding, 3 Feb 2012

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From YouTube: Coil 6

Description

Vkclg

A

So we've got the coils and now we're going to start putting them together, preparing them for welding, I'm going to grind off the ends.

A

With this miller, tig welder, this is our welding device, which has a separate cooler device that cools the torch is that water cooled there.

B

Always put on your safety equipment, this is a flame flame resistant, it's not flame proof, but it's flame resistant. As you can see. It's not flame proof. Yeah get a hot enough piece of metal on there. It's gonna burn.

B

Getting this foot controller out.

B

We're actually along at least quite a ways yet from welding, because what we have to do is we'll explain that we have to put an inert gas on the inside of this, because, if you don't the oxygen that's inside of it will have a tendency to burn and explode and cause um cause you to blow holes in this, and it will also let um metal flow into it into where you're, welding, pinholes and well not so much pin holes blockages you'll get you'll, get restrictions in here.

B

What I did what I used to use was they called it uh heat shielding compound and what it was. It was a ceramic, almost a ceramic clay that you could form into a ball and then just stick it in here and then, where your, where your butts come together that keeps that would keep the metal from flowing into the tube as you welded it. I can't find it anymore. I've looked all over. I can't find it.

A

B

So um used to get it from small parts company inc, but they don't have it anymore. So I've looked do.

A

You prefer that over in art, gasps.

B

um Actually, no because I didn't know how to use an inert gas until chuck showed me.

A

Chuck williams.

B

Chuck williams showed me so now. I know how to use it, so I just prefer to use the gas and you actually can make cleaner, cleaner welds with that.

B

But and here's how we do that we have. We have the argon tank from this welder well, seeing as how we're not using it we're going to use it to put the inert gas into our coils here but, like I said, we're still a ways away from doing that. We'll get set up. First, all right! So what you're going to do we're going to put this in the vise.

B

And then we're going to take a die grinder and we're going to make a cut here right where that right, where that dimple is because that's the roundest part.

B

I'm going to go, get another die grinder.

C

C

A

Typically, do that before every use of the diet.

B

Yeah, it says on here oil daily, just two or three drops.

B

A

B

You use it for continuously or for a long time, just just maintaining your equipment.

B

And you don't want flammable materials like oil around your welding start fires, forehead explosions,.

B

Probably should have hearing protection in here's. What we're gonna do now we're going to.

C

A

Now a regular grinder would work, but it's a little harder to get in there right do. You prefer die grinder versus a regular grinder like a.

B

Four-Inch grinder, like one of those.

A

Four-Inch grinder yeah.

B

uh No, you could use this as long as you.

C

Have a cut-off wheel on it.

B

I just if you have a uh I.

A

Mean this, this sounds more personal.

B

Preference I like a I like a thin, a thin wheel like that, because it cuts better than a thicker one, and this is easier to handle too.

A

B

Easier, we have a little more control. Okay. Now you see, we've made this cut and you don't just leave it at that. You see how uh our bend distorted the hole.

A

B

Technically, if you had a little better die than we do, that would actually make that a little smoother, um but it's not going to make a big difference. You still have that same uh uh area that that volume right there it's just instead of being round it's more elliptical.

B

So now now you don't want to stop there. You want to clean it out.

B

You want to get you want to get the chaff around the inside of the hole.