| Introduction |
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ix | |
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1 One-dimensional model of the deformation zone |
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1 | (13) |
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1.1 The deformation zone in the moving coordinate system |
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1 | (3) |
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1.2 Differential equation of rolling |
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4 | (3) |
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1.3 Numerical solution method |
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7 | (2) |
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9 | (2) |
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1.5 The torque in the roll |
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11 | (3) |
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2 Mathematical model of wide-strip hot rolling of steel |
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14 | (33) |
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2.1 Modeling the structure of the steel during hot rolling |
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14 | (21) |
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2.1.1 Model of austenizing steel in heating |
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14 | (3) |
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2.1.2 Mathematical model of the austenitic structure upon deformation under isothermal conditions |
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17 | (5) |
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2.1.3 Features of modelling the parameters of the structure of austenite under isothermal multiple deformation |
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22 | (1) |
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2.1.4 Formation of the austenite structure in isothermal conditions |
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23 | (1) |
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2.1.5 Calculation of isothermal decomposition diagrams of austenite |
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24 | (2) |
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2.1.6 Method of calculation of thermokinetic diagrams of austenite breakdown |
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26 | (5) |
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2.1.7 Evaluation of the model of mechanical properties |
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31 | (4) |
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2.2 Deformation resistance |
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35 | (7) |
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42 | (5) |
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3 Control of the formation of the microstructure and mechanical properties of rolled steel |
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47 | (22) |
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3.1 Modelling of microstructure and mechanical properties in the rolling mill |
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50 | (8) |
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3.2 Automatic control system of the properties of rolled steel in ShSGP wide-strip hot rolling mill |
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58 | (4) |
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3.3 Special features of production of hot-rolled strip plate for continuous cold rolling mills |
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62 | (7) |
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4 Stability and reliability of the hot rolling process |
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69 | (29) |
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4.1 Increasing the reliability of the analysis of the sheet rolling process |
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69 | (4) |
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4.2 Stability assessment of the quality of sheet rolled products |
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73 | (2) |
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4.3 Effect of heating conditions of slabs on the stability rolling technology for sheets and strips |
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75 | (4) |
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4.4 Reliability of hot strip rolling technology |
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79 | (19) |
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4.4.1 Evaluation of the reliability of hot rolling technology |
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79 | (8) |
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4.4.2 Influence of design features of wide-strip mills on the reliability of the rolling process and the quality of sheet steel |
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87 | (11) |
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5 Asymmetric strip rolling |
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98 | (82) |
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5.1 Features and possibilities of asymmetric rolling |
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98 | (9) |
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5.2 Calculation of process parameters of the asymmetric rolling by the method of slip lines |
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107 | (39) |
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5.2.1 Matrix-operator version of the method of slip lines |
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107 | (1) |
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5.2.2 Basic equations of planar plastic flow |
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107 | (4) |
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5.2.3 Relations along the slip lines |
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111 | (2) |
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5.2.4 Formulation of boundary-value problems |
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113 | (3) |
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5.2.5 The matrix-operator method of constructing slip line fields |
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116 | (11) |
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5.2.6 Construction of the field of slip lines and the velocity hodograph |
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127 | (4) |
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5.2.7 The matrix equation for the asymmetric process |
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131 | (4) |
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5.2.8 Analysis of the results of calculation |
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135 | (11) |
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5.3 Effects of process asymmetry in cold strip rolling |
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146 | (18) |
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5.4 Influence of asymmetry on the rolling process on the texture of steel sheet |
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164 | (8) |
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5.5 Using process asymmetry to determine the friction coefficient in rolling |
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172 | (8) |
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6 Mathematical model of the process of cold rolling of strips in continuous mills |
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180 | (30) |
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6.1 The model of the stationary process |
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180 | (18) |
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6.1.1 Selection of the method for calculating the deformation resistance |
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180 | (5) |
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6.1.2 Investigation of the deformation resistance of steel in the deformation zone |
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185 | (6) |
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6.1.3 Calculation of the friction coefficient in the deformation zone |
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191 | (4) |
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6.1.4 Calculation of the strip temperature in the line of the rolling mill |
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195 | (3) |
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6.2 The model of the non-stationary process |
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198 | (12) |
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6.2.1 The equation of the stand-drive-strip dynamic system |
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198 | (3) |
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6.2.2 Mathematical model of contact stresses in the deformation zone in rolling welded joints |
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201 | (4) |
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6.2.3 Methods for solving the dynamic problem |
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205 | (2) |
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6.2.4 Simulation of the transition process in rolling a welded joint |
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207 | (3) |
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7 Optimisation of the technological conditions of continuous cold rolling of strips |
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210 | (31) |
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7.1 Selection of the criterion and optimisation method |
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210 | (4) |
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7.2 Selection of the value of relative reduction in the final stand of the cold rolling mill |
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214 | (4) |
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7.3 Rolling in knurled rolls |
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218 | (1) |
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7.4 Rolling in `cold' rolls |
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219 | (2) |
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7.5 Special features of the technology of rolling strips with welded joints |
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221 | (20) |
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7.5.1 Effect of the rolling process parameters on strip tension |
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224 | (10) |
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7.5.2 The effect of the speed' in acceleration and deceleration of the rolling mill |
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234 | (7) |
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8 Stability of the technology of cold rolling of strips |
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241 | (22) |
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8.1 Indicators of the instability of the cold rolling process |
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241 | (5) |
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8.2 Calculation of instability parameters of the process |
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246 | (5) |
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8.3 Dynamic loads is drive lines and vibrations in the stands of continuous cold rolling mills |
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251 | (12) |
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9 Features of the rolling method of production of sheet steel |
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263 | (116) |
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9.1 A mathematical model of the stress-strain state of coils of cold rolled strips |
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263 | (19) |
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9.2 Numerical evaluation of the conditions for contact of strip turns in a roll |
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282 | (3) |
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9.3 Welding of strip loops in rolls during metal annealing |
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285 | (6) |
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9.4 Experimental studies of stresses in strip rolls |
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291 | (8) |
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9.5 Effect of process parameters on the winder stress-strain state rolls |
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299 | (18) |
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9.6 Selecting tension modes when winding strips rolls of cold-rolled strips |
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317 | (33) |
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9.7 Stress-strain and temperature condition of hot-rolled strips |
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350 | (16) |
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9.8 Rational technology of cooling and storage of hot-rolled strips |
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366 | (13) |
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10 Skin pass rolling of sheet steel |
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379 | (53) |
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10.1 Theoretical basis of skin pass rolling |
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379 | (4) |
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10.2 Kinematic and power parameters of the skin pass rolling process |
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383 | (16) |
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10.3 Features of technology of skin pass rolling thin strips |
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399 | (7) |
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10.4 Effect of skin pass rolling conditions on the properties of steel |
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406 | (4) |
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10.5 Skin pass rolling of hot-rolled steel |
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410 | (6) |
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10.6 Relationships governing the formation of metal surface microrelief |
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416 | (16) |
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11 Energy saving when rolling strips |
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432 | (15) |
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11.1 Saving energy in wide-strip hot-rolling mills |
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432 | (2) |
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11.2 Reduction of energy consumption in the production of cold rolled steel sheet and tin plate |
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434 | (9) |
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11.3 Thermal insulation and heat saving in rolling mills |
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443 | (4) |
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12 Preventing defects in thin sheet steel |
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447 | (23) |
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12.1 Defect morphology. External features of kinking |
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448 | (2) |
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12.2 Defect formation. Causes and mechanism of kinking |
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450 | (5) |
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12.3 Welding of adjacent turns during the annealing of cold-rolled steel coils |
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455 | (9) |
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12.4 Effect of coiling technology of cold rolled steel and of unwinding of strip rolls on the formation of kinking defects |
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464 | (6) |
| References |
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470 | (6) |
| Index |
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476 | |
Lisainfo e-raamatute kohta