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A Design of New-type Cantilever Roller for Developing the Surface-quality of Seamless Steel Tube

Author: PanXiaoHong
Tutor: HanXu
School: Hunan University
Course: Mechanical Design and Theory
Keywords: Surface quality Reheating furnace Cantilever rollers Structural design Materials Design
CLC: TG307
Type: Master's thesis
Year: 2009
Downloads: 65
Quote: 0
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Abstract


Cantilever rollers is an important component of the hot-rolled seamless steel pipe production line reheating furnace used to transport the steel pipe to be heated . Existing cantilever rollers easy-to-surface bonding steel at high temperatures , and cause a scratch on the surface of the steel pipe surface quality defects . To solve this problem , this paper summarizes the use of state of the existing cantilever rollers at home and abroad , elaborated the cantilever surface of the roller mechanism of bonding steel , and based on the theory analysis and calculation of the temperature field of the cantilever rollers ; combined with calculation results re new cantilever roller structure design and materials design ; the main content of this paper include : (1) on the inner and outer walls of the new structure of the cantilever roller temperature and thermal stress was calculated based on the knowledge of heat transfer, mechanics of materials , design of a new structure reasonable , and to verify that the new structure of the boom roller is not easy to stick steel ; ( 2 ) due to the the original cantilevered roller material not having a high temperature strength of the requirements of the new structure of the boom roll , they carry out a new roll material design ; development of high efficiency cantilever roller material analysis system, which can simultaneously cantilever rollers selection of design and temperature field, stress field analysis , optimized design greatly improve the accuracy and speed of the cantilever roller ; (3) the new cantilever roll production test , the test data that : new cantilever rollers roll surface non-stick steel, steel pipe surface quality improved significantly , the roller body does not crack , the life expectancy of the requirements . Reference novel cantilever rollers structural design and material design to be successful. Thesis : according to the mechanism of bonding steel cantilever roll bonded steel is one of the main cause hot-rolled steel surface quality defects ; pursuant to which the development of new cantilever rollers with excellent non-stick steel performance , improve the surface quality of the steel pipe ; this the study of hot-rolled steel production and quality and reducing consumption has a larger significance .

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CLC: > Industrial Technology > Metallurgy and Metal Craft > Metal pressure processing > General issues > Heating and heating equipment
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