Fractured Swivel Head
The swivel head of a driving spindle of a four-high mill fractured. The fracture originated in a darkly stained spot on the bottom of the cylindrical part and then continued into the cylinder walls in the two directions. The fracture topography was of dendritic structure at the stained spot. This led to the conclusion that a shrinkage cavity was present. Metallographic examination confirmed that the fracture of the swivel head was caused or favored by a cavity.
Friedrich Karl Naumann, Ferdinand Spies, Fractured Swivel Head, ASM Failure Analysis Case Histories: Steelmaking and Thermal Processing Equipment, ASM International, 2019, https://doi.org/10.31399/asm.fach.steel.c9001201
Download citation file:
Understanding the Basics Collection
8-Volume Digital Library Exclusive
The Understanding the Basics Collection provides comprehensive coverage of critical topics in metallurgy. These introductory guides present critical information on key topics related to materials processing, performance, and evaluation.