How Does This Forge Work?

Was trying to figure out how big that setup is...then I saw the dude at the bottom with the helmet.

A polygon comprised of 360 very small based, very long legged isosceles triangles, all pointing to a common center.

planeflyer21 said:

Was trying to figure out how big that setup is...then I saw the dude at the bottom with the helmet.

A polygon comprised of 360 very small based, very long legged isosceles triangles, all pointing to a common center.

Click to expand...

planeflyer21 said:

Was trying to figure out how big that setup is...then I saw the dude at the bottom with the helmet.

A polygon comprised of 360 very small based, very long legged isosceles triangles, all pointing to a common center.

Click to expand...

I didn't get a picture of the guy in the helmet, just two identical pictures of the beast by itself.
If you ever have a chance to take a tour of a steel mill, do so. Quite unbelievable how big and how
hot thing get.

And as far as small things go: Even made up of 360 triangular wedges, it still is NOT a circle, it would be a 360agon or some name to that effect.
Even with a billion little triangle making it up, it still is not a circle. No matter how many triangles you use, the base of each triangle is going to be
a straight line. The line segments would all have to be arcs with the same radius as the circle and cannot be straight lines. After awhile if you continue to
make your triangles even skinnier and skinnier, I guess you would physically run into some limit as you approach the quantum level, but then would
the circle be a circle or would the cat be dead or alive?

The Grumpy Old Guy

I just re-downloaded your pictures, and yes there is a little person in the bottom image. Previously the image stopped
downloading whit the bottom missing. Its amazing how a person this small could get a job working in a steel mill! ( Insert a suitable emoji of jest and frivolity)

The Grumpy Old Guy

markknx said:

What if you hold the part in a collet in the mill spindle, with a bit in the vise?

Wow that is one big forge and one big ring.

Click to expand...

My take on it spinning work fixed tool ="Lathe"

Spinning tool fixed work =Mill"
But of course there are shapers etc and so on etc and opinions(probably all are right)

ch2co said:

I didn't get a picture of the guy in the helmet, just two identical pictures of the beast by itself.
If you ever have a chance to take a tour of a steel mill, do so. Quite unbelievable how big and how
hot thing get.

And as far as small things go: Even made up of 360 triangular wedges, it still is NOT a circle, it would be a 360agon or some name to that effect.
Even with a billion little triangle making it up, it still is not a circle. No matter how many triangles you use, the base of each triangle is going to be
a straight line. The line segments would all have to be arcs with the same radius as the circle and cannot be straight lines. After awhile if you continue to
make your triangles even skinnier and skinnier, I guess you would physically run into some limit as you approach the quantum level, but then would
the circle be a circle or would the cat be dead or alive?

The Grumpy Old Guy

Click to expand...

Keep going. You are on your way to inventing calculus.

Bill C. said:

Thanks for the photos. I like watching the big machines at work. I have watched forging videos before. You are right the chain/link-belt is to rotate the mandrel. I hate to see the oven they use to keep that part hot. It would be interesting to see the machine setup to finish that part. That would take one king size boring bar to finish the inside diameter not to mention a mandrel to turn the outside.

Again thank you,

Click to expand...

Likely this part would be finished on a vertical boring mill; the same ram which carries the cutting tools is used to finish both the outside and inside diameters, or usually these machines have two rams, and can finish the ID and OD at the same time, on opposite sides of the part; the shop I apprenticed in had one that would take a part 20 feet in diameter, and they come in larger sizes than that.

I remember seeing this picture a while back. IIRC it is supposed to be a forging for a nuclear reactor shell or something like that. I love seeing the large machinery at work.