jamesp
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Post by jamesp on Oct 19, 2013 8:28:51 GMT -5
very high vacuum devices have to be made very thick and of exotic metals because oxygen can leak thru 1" mild steel plate at near perfect vacuum, ruining the vacuum. That is a special case not comparable to here. Near perfect vacuum is used for special purposes and in our case the minor leakage thru seals is not relevant. These are very powerful vacuum forces. Seems to me that the force of the vacuum pulling in can be as powerful as a 4000 psi force pushing out. The seals are equally challenged in either situation. Not? I feel certain they make vacuum pumps that can collapse very thick walled super strong containers. A vacuum pump designed w/tight seals and lots of power should be able to implode most any container. |
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jamesp
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Post by jamesp on Oct 19, 2013 8:29:17 GMT -5
This is a 5000 PSI 4 stage air compressor. I am thinking about shooting pumpkins at Scott in LA from Atlanta GA.  |
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grayfingers
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Post by grayfingers on Oct 19, 2013 14:37:39 GMT -5
Another nifty notion, James. I see there are videos on YouTube about re-purposing refrigeration compressors for DYI vacuum pumps.
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Deleted
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Post by Deleted on Oct 19, 2013 15:38:13 GMT -5
Suck a vacuum on an item the air bubbles out. Nothing goes in until vacuum is released. Now release the vacuum and you have 15 PSI pushing the fluid in, until the back pressure from the capillary walls stops the flow. Leave it long enough and you will get full penetration.
Perhaps sucking the vacuum, expanding the air out of the voids, then releasing vacuum, starting the filling process, then forcing it all the way in with high pressure is the key here.
The bottom line is this. The commercial impregnators use 4000PSI tanks for forcing the stabilizer into the material being stabilized.
Thanks lparker for that insight.
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jamesp
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Post by jamesp on Oct 19, 2013 16:08:10 GMT -5
Another nifty notion, James. I see there are videos on YouTube about re-purposing refrigeration compressors for DYI vacuum pumps. Yes. A refrigeration or A/C compressor i believe. The suction side of those 'compressors' have (i think) powerful suction. I would like to have one just because of the fact that they are ' hermetically sealed ' . I am really stimulated by the fact something can be 'hermetically sealed'. |
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Post by rockpickerforever on Oct 19, 2013 21:47:06 GMT -5
Another nifty notion, James. I see there are videos on YouTube about re-purposing refrigeration compressors for DYI vacuum pumps. Yes. A refrigeration or A/C compressor i believe. The suction side of those 'compressors' have (i think) powerful suction. I would like to have one just because of the fact that they are ' hermetically sealed ' . I am really stimulated by the fact something can be 'hermetically sealed'. James, if you can be "stimulated by the fact something can be hermetically sealed" I think you are in serious need of some attention! |
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Post by rockpickerforever on Oct 19, 2013 21:49:12 GMT -5
But you already knew that, didn't you?
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quartz
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breakin' rocks in the hot sun
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Post by quartz on Oct 19, 2013 21:59:13 GMT -5
I'm thinking here, if the rocks were put under a vacuum when warm, any moisture, vapor or gas contained would be expanded because of the temp. This should make for an easier "suck out".
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jamesp
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Post by jamesp on Oct 19, 2013 22:46:18 GMT -5
Yep. Heating those wet corals takes a while. Best is 10-12 hours at 200 degrees to avoid boiling. I can tell if they are dry by opening the door and when the hot air rises and does not fog my glasses
they are dried enough to crank the heat up. If you heat them past 212F and they are wet you will have more fractures than you can imagine.
But i am thinking introduce vacuum whilst warm and dry has got to help.
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jamesp
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Post by jamesp on Oct 19, 2013 22:47:03 GMT -5
Hermetically speaking, we all need help Jean...
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Post by rockpickerforever on Oct 19, 2013 23:32:55 GMT -5
I'm gonna agree with a vacuum, James, That's what I've always believed.
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jamesp
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Post by jamesp on Oct 20, 2013 7:16:36 GMT -5
I was thinking vacuum too. Scott says they are using 4000 psi. I think he has been studying. I am thinking he has seen the way.
I am not qualified to play with much at that pressure other than hydraulics. Gases at that pressure would be frightening.
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Post by rockpickerforever on Oct 21, 2013 20:44:17 GMT -5
Yes, nothing to mess with. Gases at that kind of pressure can take off digits and appendages.
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Deleted
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Post by Deleted on Oct 24, 2013 12:16:40 GMT -5
gas is just a fluid, like hydraulic oil. Here is the stabilizer company I refer too. www.kandgstabilizing.com/ Jim, you can put that oven inside a propane tank and pull vacuum on it while it heats. |
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jamesp
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Post by jamesp on Oct 25, 2013 23:46:07 GMT -5
I am going to have my pumpkin launcher ready to fire soon. Get you helmets dusted off.
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jamesp
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Post by jamesp on Oct 25, 2013 23:54:12 GMT -5
k and g would know best how to make their stuff work. Looks like they have a service too.
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Deleted
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Post by Deleted on Oct 26, 2013 13:04:21 GMT -5
I think I am safe from Jim's punkin' chunkin' 3000 miles is a long way!
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jamesp
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Post by jamesp on Oct 26, 2013 14:08:44 GMT -5
Scott-i am experiencing weirdness(other than bi-polar and scitz). After heating coral it really starts to change color over a 3 day period. Some over a 10 day . Maybe longer. And water soaking seems to speed up and intensify the color.What does it mean? Imagine throwing a pumpkin at the guy on the ATV. My Dad was a Navy fighter pilot and stunt pilot and used to do this kind of stuff to me if Mom was not at the little backwoods airport where he kept his Pitts. He was a mad man. |
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