Based on the Shougang revamping project and plate rolling process, a plate rolling force model of high precision was developed considering the influence functions of deformation area, deformation rate and deformation velocity.
A differential equation of tension in tandem rolling was proposed as: dσ_(fi)/dt=E/(h_i integral from n=0 to L (dx)/(h(x)))(v_(i+1)~′-v_i) It seems to be satisfied for those rolling processes of both uniform and variant strip section.
本文建议了一个连轧张力微分方程: dσ_(fi)/dt=E/(h_i integral from n=0 to L (dx)/(h(x)))(v_(i+1)~′-v_i)它适用于恒断面和变断面等各种轧制过程。
Based on the preliminary discussion to the application of control theory of the mass flow in the copperplate rolling, the article uses Visual Basic 6. 0 to simulate the relevant data and carries on dy- namic emulation to the rolling course.
The dynamic annular parts shaping and the defect producing process in the rolling course is real- time monitored, the nephogram of displacement, stress, strain, veloc- ity of the parts node at the different time are offered, and rolling technique of the structural dimension of the roughcast, rotation veloc- ity of the main shaft, feeding of the roller core and the feeding of the cone roller are compared combining the calculation result.
Based on history data of rolling course, an RBF network rolling force model anddynamic recurrent network model based on ARMA model for each loop of screw downsystem are established respectively. Network structure and learning algorithm areoptimized, then the convergence rate and generalizing capability of networks areimproved.
Based on Shanghai Bao Steel Co. practical project, which is modeling、simulating of dynamic rolling procedure and control optimizing for cold continuing roll mill, the research of control optimization on the DC motor speed control system is studied.
Around this goal, it becomes the research direction of rolls automation experiment and rolling technical of our country that developing the new technology, new theoretical, new skill of rolling procedure, corresponding control means and automation system, promoting the leap of rolling technology and the crossover of the rolling product technology content of our country.
In order to resolve the problem that single composite plate twisted on the roller in rolling procedure, the process of symmetry rolling in which two sheets of explosive welded titanium/aluminum composite plate were riveted symmetrically, was put forward and confirmed successfully.
The results show that polygonal ferrite, granular bainite and larger amount of stabilized retained austenite can be obtained by controlled rolling processes.
Simulation of rolling processes by the boundary element method
Rolling processes play a very important role in everyday manufacturing.
In this paper orbital forging and axial die rolling processes are included as subsets of rotary forging while radial forging, also known as rotary forging, has been excluded; these decisions are primarily based on die kinematics.
Improvements to Alexander's computer model for force and torque calculations in strip rolling processes