在轧制过程轧辊磨损热评价的新方法中英文翻译资料 毕设论文.docVIP

New Method for Evaluating Thermal Wear of Roils in Rolling Process Abstract：A new method was developed by a thermal wear machine to evaluate the thermal wear of rolls in steel rolling process．The stee1 strip and rolls were simulated by upper and 1ower heating disks．The upper heating disk could be kept at a temperature of over 900 ℃ by induction heating．The pressure between the disks as high as 323.2 MPa could be achieved and the slipping rate could be 12.7 ．The thermal wear of high speed steel(HSS)roll material，the wear rate of the HSS roll，and the SEM morphology of a worn HSS roll surface were investigated．This method was useful and could be employed to simulate friction and wear between strip and roll during the strip roiling process． Key words：therma1 wear；roll；friction；strip rolling；Induction heating The roll is one of the most important tools in the rolling process．Its surface may get worn out because of the relative slip between the roll surface and steels for the fast changes in both rolling force and temperature． In designing and calculating the wear crown of rolls，the roll wear is a very important factor and has to be taken into consideration，as it can reduce the difficulty in controlling steel shape and increase the accuracy in the calculation model of the roll wear crown． Furthermore，the wear of the roll surface will directly affect the surface quality of stee1． Therefore，it is significant to develop an approach method to evaluate the roll wear and to study the mechanism of roll wear based on friction theory． To date，many studies have been carried out concerning roll wear． For example，Kato developed a thermal wear equipment．which is a disk shaped machine．However，it is difficult to simulate the wear between steel and roll during the rolling process，as the disk is smal1 and thin，and the load is not very large．Glottal E and Li et alE. studied the thermal wear attribution of wear-resistant materials 9Cr2 and 3Cr2W 8V， and the thermal wear equipment they used