PART 4 A Method of Manufacturing Piston Rings of the Clupet Style

Continued from p.688 M.E.4730 November 17 Note: imperial dimensions follow metric dimensions and are in brackets. References are listed in part 1 (M.E.4728, October 20). Aset of Clupet rings was made up and then put in the muffle for 30 minutes, before it was turned off and allowed to cool, after which the tube was dismantled and the rings turned right side out. Whilst the rings ‘flipped’ back alright it seemed there were still issues/problems that needed resolving. Problem 4 I'd noticed that the rings after being heat treated and turned ‘right side out’ had a very slight visible gap between the two separate sections of the ring either side of the ‘dog leg connecting bar’ (photo 10). This showed up when turning the final diameter, by the lack of…

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Model Engineer (Digital) - 1 Issue, Issue 4731

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