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Research on Deformation Resistance of Hot Rolling Ultra-low-carbon and the Control of Alice Defect

Author: ChengZuo
Tutor: RenYong
School: Wuhan University of Science and Technology
Course: Materials Processing Engineering
Keywords: Ultra-low carbon steel Deformation resistance model Dynamic strain aging The Alice skin defects of hot rolled strip
CLC: TG335.11
Type: Master's thesis
Year: 2010
Downloads: 137
Quote: 0
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Abstract


Hot-rolled ultra low carbon deep drawing steel as third generation stamping steel , its superior performance to meet the requirements of various complex moldings . With the the extensive molding products such as cars, appliances and a variety of instruments into the lives of people , on the the stamping plate surface quality requirements also increasingly high , especially steel plate car outside the coverage is often used completely free of surface defects . Therefore, various surface defects occur in the rolling process will seriously affect the enterprise. Deformation resistance of metal materials is the basis for the calculation of the deformation and stress in the material forming process , has an important significance in actual rolling production . This article GLeeble-1500 thermal simulation testing machine to study the deformation resistance of hot-rolled ultra low carbon steel by the experimental data to study the relationship between the deformation resistance and deformation temperature , strain rate, and the degree of deformation . Established a mathematical model of the deformation resistance and better fitting accuracy . Analysis of deformation resistance curve shapes found in the phenomenon of serrated yielding , ultra-low carbon steel multi- point yield , yield great depth characteristics are different from most low-alloy steel kinds , this may be one of the reasons that lead to strip edge defects . Deformation resistance characteristics , combined with ultra-low carbon steel laboratory experimental conditions and Wuhan Iron and Steel Production in the hot rolling , the paper found that the oxidation characteristics of ultra-low ribbon steel , wide exhibition friction characteristics as well as the rolling process change is also affecting warping defects in the development of important factors . Finally , based on these factors were explored methods of control deficiencies .

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CLC: > Industrial Technology > Metallurgy and Metal Craft > Metal pressure processing > Rolling > Rolling process > Rolling method > Hot-rolled
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