Design optimization and application of the coiler mandrel for hot rolling skin pass mill line
ZHANG Xiong
YU Xiaojun
GOU Junnian
TANG Yong
QI Xin
Abstract：To address the challenges faced by traditional hydraulic/mechanical mandrels in producing high-strength and thick strip steel,such as insufficient clamping force and hydraulic cylinder leakage,this paper innovatively designed a mechanically driven dual-jaw automatic lubrication mandrel.Firstly,the structure and working principle of this mandrel are specifically introduced,and the calculation methods for key parameters are provided.Subsequently,through practical engineering cases and finite element analysis,the rationality of the calculation methods and the superiority of the lubrication effect are verified.The mandrel structure adopts a dual-jaw design,effectively enhancing the clamping adaptability.On the one hand,it takes into account the convenience of operation;on the other hand,the problem of head deformation is successfully solved by optimizing the specifications of the disc spring.In addition,the optimized lubricant passage ensures uniform distribution of lubricating oil,achieving significant results in practical applications.
Keywords：hot rolling skin pass mill linecoiler mandreldual-jawclamping forceautomatic lubrication
Publication Date：2025-11-20
Online Publishing Date：2026-01-06(First online date of this platform, not the publication date of the document)
Pages：8( 89-96 )