When three rings are used it is usually because two wouldn't perform, so it is extreme. There is an associated risk to the health of the assemblers and operators of those rings. Inexperienced design just adds more risk.
Going with Strecon utilizes the best mechanical property of metal...
Are you considering high production induction heaters? I say high production because they usually cost allot.
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Forging http://mech.e.tripod.com
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Ddraig Breuddwydia....www.tailofthedragon.com
>Q 2. Is there any other method? We tried portable vickers
You can perform hardness tests to the questionable areas, do a hardness map to find variations. Or you can make a similar sacrificial part, maybe one with no teeth, that you can cut and check hardness at will.
Remove a surface...
That might be standard unit, we have one a bit longer and got it from The Caldwell Group, Inc.
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Forging http://mech.e.tripod.com
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Ddraig Breuddwydia....www.tailofthedragon.com
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Shell Press, in the old days it was a large custom press used to make artillery shells. But I think you are asking about Clam Shell Presses. They are small table-top units, used for bagging and packaging products.
Die Set = Die Shoe (usually an upper and a lower make a set)...
Have you looked at mixing the oil with a high flash point oil, like vegetable oil? Hard to say, without knowing the temp and application.
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Forging http://mech.e.tripod.com
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Ddraig...
It wasn't covered, but I believe these self-propelled carts have a way to program the steering inputs.
It would be interesting to know if Da Vinci mentally visualized these designs before putting them on paper or if it was a lengthy evolution.
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Forging...
As most have seen the sketches and drawings, it is interesting to see some sort of proving. A while back I read about somebody testing the pyramid shaped parachute from a high altitude; reportedly it worked. That takes a brave soul.
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Forging...
This is an addendum to josephv's post about the self propelled cart: http://www.eng-tips.com/viewthread.cfm?qid=226118&page=2
This is a new show that is a bit goofy with the characters they use, but they do the work and it is part of the genre that is...
http://www.eng-tips.com/viewthread.cfm?qid=154381&page=2
Try the search function as this forum has covered many topics.
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Forging http://mech.e.tripod.com
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Ddraig Breuddwydia....www.tailofthedragon.com
Lesko is in it to sell books, so he makes marketing claims. His book, I read 12 years ago, has what the op asked for, which is names and numbers of people and the names of some programs that the gov creates.
So the "free money" stuff is a moot point.
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Matthew Lesko has been publishing books about how to apply for us gov grants for over a decade, should be able find one in the library or on-line.
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Forging http://mech.e.tripod.com
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Ddraig...
Theoretically the two presses can cause the same force, which can be compared, you just can't use the same equation to derive them. The forces can be measured and compared, but the quality and accuracy of the measuring will add variables. Depending on certain factors, the outcome can be...
For some really slow hydraulic presses you can see the ram stop once it touches the workpiece, then it builds up pressure, overcomes the workpiece then continues traveling. Sometimes it is hard to detect the stop in motion or the speed is negligible. These small and simple hydraulic presses...
That will take several different tools. Look at a few gauge catalogs and see what fits your needs. Or if you contact a gauge-builder, they will surely quote you something. If you don't have a builder, look for one in Michigan as they could use the work right now...
