FIELD: metallurgy.
SUBSTANCE: round blank is cut from the sheet and barrel-like semi-finished product is drawn therefrom. Then, the corrugated bottom is formed at serial rolling-out with reversing. Note here that it is formed from the periphery to the centre. Note here that at every step the barrel is drawn. Note also that the barrel area and drawing depth are decreased while the male die stroke L is defined by the relationship disclosed in the invention.
EFFECT: higher quality of membranes owing to eliminated folding.
7 dwg
| Title | Year | Author | Number |
|---|---|---|---|
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SU1245383A1 |
| SHAPE-GENERATING DEVICE | 2006 |
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|
RU2042457C1 |
| 0 |
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SU1784364A1 | |
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| METHOD TO MANUFACTURE FORGED PIECES, SUCH AS COVERS OR BOTTOMS | 2013 |
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RU2567416C2 |
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|
RU2550474C2 |
