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The function of excited signal, in the generation, transmission and extraction process of measuring signal in the piezomagnetic type shape meter, was particularly analyzed, and its importance of signal quality to measuring accuracy of stripe shape was showed clearly. Aimming to the various disadvantages of traditional methodes on generating excited signal, a new method based on microcontroller was...
Based on the KRC model as transformation thermodynamics, a new model of the phase equilibrium temperature of X80 pipeline steel has been established by C++ under the hot deformation conditions, on which analyzing the influences of true strain, deformed temperature and strain rate. The results given by the model have good agreements with the measured value. It shows that the model can have a good accuracy...
In order to realize numerical simulation of hot rolling and establish the hot deformation process parameters for X80 pipeline steel, the flow stress behavior of X80 pipeline steel during hot deformation was investigated in the temperature range of 900-1100°C and strain rate of 0.01-1s-1 on Gleeble-3500 thermo-simulation machine. The results show that dynamic recover and dynamic recrystallization occur...
Deformation resistance of X80 pipeline steel was researched by experiment with the Gleeble-3500. Establishing the model of dislocation density of X80 pipeline steel through the corresponding relationship between dislocation density and deformation resistance, then combining with the thermodynamic model of X80 pipeline steel which is based on the KRC thermodynamics model in order to analysis the effect...
Research and application on shape meter are introduced, especially in China. A self-made MPIBPST (multi-roll-piece inner bore piezomagnetic sensor type) shape meter roll for cold-rolled steel strip was applied in to the industrial test. MPIBPST means that one shape meter roll is made up of some roll-picesce, there are two bores in each roll picesce, and each inner bore contains one piezomagnetic sensor...
A contact shape meter with new structure, called MPIBPST(Multi-Roll-Piece Inner Bore Piezomagnetic Sensor Type) shape meter, for cold-rolled steel strip is developed, and it is applied to 1050II HC mill. Optimization design on the structure of shape meter roll is carried out and shape signal is compensated properly from several perspectives, for example, shape meter roll deflection, strip temperature...
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