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#1
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What Technique is Used To Shape This Form?
Hello everyone.
I was wondering what technique is used to shape this form? Is it just hammer forming or there are other techniques involved? 447184d4264e707fddbe168ad5a74665.jpg
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Michael Keen |
#2
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Is this a frame for a porthole window mounted on the wall of a building?
Material?
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Marc |
#3
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Michael Keen |
#4
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Quote:
This is a shape that is created as a regular toroid shape, by "just" metal spinning. The symmetrical part is then fully-annealed and then "just" press-formed in offset dies, trimmed and then polished.
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Kent http://www.tinmantech.com "All it takes is a little practical experience to blow the he!! out of a perfectly good theory." --- Lloyd Rosenquist, charter member AWS, 1919. |
#5
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Quote:
Hello Kent, I have been to many spinning shops but never seen them doing a toroid shape especially on a stainless steel sheet. The material used in spinning shops is mostly brass and copper. Stainless steel needs double effort for spinning. Also the offset die theory for the symmetrical part doesnt seem to be a working method since the other side of the shape would shrink under the pressure. Do you have any pictures or videos of this process you mentioned? Thank you.
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Michael Keen |
#6
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hmmm....
Sounds like actually needing the "recipe book" for duplicating the part, to me. Step-by-step formulae ... for exact results.....hmmmmm?
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Kent http://www.tinmantech.com "All it takes is a little practical experience to blow the he!! out of a perfectly good theory." --- Lloyd Rosenquist, charter member AWS, 1919. |
#7
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Hi,
Do you have several more photos of the part and approximate size? 304 stainless is shape-able depending on the profiles. Bill
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Bill Tromblay "A sign of a good machinist, is one who can fix his F$@& Ups" My mentor and friend, Gil Zietz Micro Metric Machine. |
#8
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Quote:
This part is no biggie.... I've seen these artsy parts around for a while. .... 24in. O/A D. would be large-ish, x 5-6in deep. (From what I know, Rohr Industries made nacelle lip skins and other round items for large units, for a long time.)
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Kent http://www.tinmantech.com "All it takes is a little practical experience to blow the he!! out of a perfectly good theory." --- Lloyd Rosenquist, charter member AWS, 1919. Last edited by crystallographic; 07-03-2022 at 04:58 PM. |
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