Structure Optimization of Ladle Bottom Based on Finite Element Method
Ladle is an important container in metallurgy industry, and its lifetime is very important for the natural production of enterprise. The stand or fall of refractory lining of ladle decides its lifetime, yet thermal stress is the direct reason of causing refractory lining breakage. In this paper the structure of ladle mainly by changing the structure of bottom with finite element method is designed, and three scheme models are put forward. By analyzing and comparing stress field of the three ladle models, finally an optimization scheme is put forward. The experiment results indicate that the lifetime of ladle gains obvious increasement, and the rationality and practicability of the scheme have been proved. The method is feasible to improve ladle's lifetime.
Research on influence of expansion joint of bottom lining in ladle composite construction body on thermal stress
Expansion joint has important influence on thermal stress of ladle composite construction body,the thermal expansion stress is one of its important reasons that lead to damage,so it's very great practical value to calculate the thermal expansion stress.Expansion joint question between the inside linings can be summed up in a kind of contact question,its physical model is set up.The finite element model of expansion joint of bottom lining in ladle composite construction body is built,the contact stress of expansion joint in every layer are studied.The results show that setting 2 millimeters expansion seam can reduce the contact stress which takes up from 1/6 to 1/5 of lining resistance pressure intensity.
Finite element analysis on stress field of hot metal ladle
In the process of design and calibration of the large sized hot metal ladle,it's of great significance to determine the stress distribution in each and every part of the ladle for safely and reliably running the device.I light of the operating features of 120 t hot metal ladle designed by Baotou Iron Steel Group finite element analysis and calibration have been carried out on the various stress distributions,numerical values and orientations namely the stress field under the three different operating conditions,ladle lifting up,ladle tilting and return of the ladle back to the hot metal car.In the end the results of the analysis and calibration are in conformity to the practical running conditions.This analytical method can be used as the theoretical basis in design of the hot metal ladle in the future since it's simple,reliable and reasonable in application.