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・ Crankcase dilution
・ Crankcase heater
・ Crankcase ventilation system
・ Cranked eye bolt
・ Cranken Rhyme
・ Crankin'
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・ Cranks and Shadows
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・ Crankshaft (disambiguation)
Crankshaft deep rolling
・ Crankshaft position sensor
・ Crankworx
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・ Crank–Nicolson method
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Crankshaft deep rolling : ウィキペディア英語版
Crankshaft deep rolling
Deep rolling is a method of cold work deformation and burnishing of internal combustion engine crankshaft journal fillets to increase durability and design safety factors. Compressive residual stresses can be measured below the surface of a deep-rolled fillet. Other types of fillets on shafts or tubes can also benefit from this method. Cast iron crankshafts will experience the most improvement potentially doubling their fatigue life. Typically the crankshaft is machined with under-cut fillets as opposed to tangential radiused for ease of manufacture, although all types can be deep-rolled. Most automakers are currently utilizing this crankshaft technology including: General Motors LLC, Ford Motor Company, and Fiat Chrysler Automobiles (FCA) The North American based Hegenscheidt-MFD Corporation in Sterling Heights, MI, was established in 1966. Ingersoll CM Systems of Midland, Michigan with Global HQ located in Dalian, China are the only major machine/tooling manufacturers of this application in Europe and North America, supplying a highly specialised product throughout the global manufacturing sectors.
==External links==

*(Information on Deep Rolling and Other Surface Enhancement Practices from Lambda Technologies )
*http://www.hannatools.net/en/?p=1808.html, Deep Rolling Manufacture Process from Hanna Tools
*http://www.hegenscheidtmfd.com/ 1st O.E.M.of Deep Rolling and Roll Straightening Machinery. Durable and Perishable Deep Rolling Tooling is manufactured at both locations, Sterling Heights, MI U.S.A and Erkelenz, Germany.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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