Abstract
Results of experimental and theoretical studies of horizontal accelerations of rolls, chocks and housings of strip/sheet rolling stands are shown. Relations between horizontal forces and dynamic rolling torques, sequence of their arise are described. Significant influence of gaps in system ‘chock – housing’ and radial gaps in main drive lines on values of work rolls chocks horizontal impacts against housings is proved. Influence of rolled metal dimensions, mass and speed of rolled metal before metal-in on dynamic forces of work rolls chocks horizontal impacts against housings is described by means of developed mathematical relation.
Highlights
Practice of studies of dynamic loads arising inside rolling equipment usually consists of several stages: determination of inertia forces arising due to changes of speeds and accelerations of moved masses; study of relations between different dynamic loads and sequence of their arise; determination of influence of gaps between contact surfaces and gaps closure time on dynamic loads values; study of influence of rolled metal dimensions, masses and speeds of technological performance on dynamic loads values
The stabilizers is a hydraulic cylinder installed in slot of housing on entry side (ES) which constantly presses work rolls (WRs) chock to delivery side (DS) of housing that results in elimination of gap between WR chock and housing
Calculations core of mathematical models (MMs) is based on fundamental principles of rolling process kinematics [20], and optimal algorithm of horizontal forces calculation during unsteady and steady rolling
Summary
Practice of studies of dynamic loads arising inside rolling equipment usually consists of several stages: determination of inertia forces arising due to changes of speeds and accelerations of moved masses (equipment details); study of relations between different dynamic loads and sequence of their arise; determination of influence of gaps between contact surfaces and gaps closure time on dynamic loads values; study of influence of rolled metal dimensions, masses and speeds of technological performance on dynamic loads values. Necessary stages of horizontal forces study are: determination of inertia forces during metal bite by work rolls (WRs); study of horizontal accelerations of WRs chocks and housings; https://doi.org/10.10 51/matecconf /201823901042. Determination of relations between horizontal forces and dynamic rolling torques (in main drive lines) and sequence of their arise; study of influence of gaps in system ‘chock – housing’ and main drive line on horizontal forces values; study of influence of rolled metal dimensions, masses and speeds of metal bite by WRs on dynamic loads values. It was necessary to make slots in rolling stands details for such contact sensors that could weaken equipment
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