1 Problem and Control of Strip Flatness for Wide-width Thin Strip
1.1 Production difficulties of wide-width thin strip
1.2 Research progress of strip flatness
1.2.1 Definition of strip flatness
1.2.2 Representation of strip flatness
1.2.3 Classification of strip flatness defects
1.3 Advances of strip flatness defects research
1.3.1 Advances of longitudinal buckling curves research
1.3.2 Advances of transverse buckling curves research
1.4 Strip flatness problems in wide-width thin strip
1.5 Advances of strip flatness control research
1.5.1 Strip control systems
1.5.2 Strip flatness control theory
1.5.3 Tension control theory
References
2 Theory and Control of Buckling Deformation for Wide-width Thin Strip
2.1 Behavior of strip buckling
2.2 A method for solving the strip buckling problem
2.2.1 Perturbation analytical method
2.2.2 Finite element numerical method
2.2.3 Symplectic elastic method
2.3 Analysis and control of longitudinal buckling
2.3.1 Solution of longitudinal local buckling based on symplectic elasticity
2.3.2 Load boundary conditions for longitudinal local buckling
2.3.3 Symplectic dual system of the longitudinal local buckling problem
2.3.4 Symplectic analytical solution for longitudinal local buckling
2.3.5 Elastic analytical solution for longitudinal local buckling
2.3.6 Verification of buckling solution results
2.4 Analysis of longitudinal bucMing effect
2.4.1 Influence of buckling region size on buckling critical stress
2.4.2 Influence of boundary constraints on the aspect ratio of buckling region
2.4.3 Influence of boundary constraints on buckling deflection distribution
2.5 Analysis and control of transverse buckling
2.5.1 Boundary load distribution of wide-width thin strip
2.5.2 Introducing symplectic dual system into the stress problem of wide-width thin strip
2.5.3 General solution of stress distribution under symplectic dual system
2.5.4 Special solution of internal stress distribution of wide-width thin strip
2.5.5 Internal stress distribution of wide-width thin strip
2.5.6 Verification of solution results of stress distribution
2.5.7 Analytical solution of transverse buckling during cleaning and coiling
2.6 Experimental study on exit coiling
2.6.1 Brief introduction of 1300mm cleaning line unit
2.6.2 Influence of coiling tension on transverse flatness
2.6.3 Influence of coil diameter on transverse flatness
2.6.4 Influence of strip thickness on transverse flatness
References
3 Strip Form Defects and Control Strategies
3.1 Longitudinal edge defects during rolling
3.1.1 Longitudinal edge defects
3.1.2 Negative impact of longitudinal side rib waves on production
