Development of Hot Vacuum Rolling Technologies for Hard-to-machine Materials

我们的研究的物质被分成四个群体，如以下：1高性能真空滚动磨坊试验滚动磨坊已经开发出，其最大温度1100 ° C的容量，滚动速度10 mpm，真空10度D15度D1 Torr和滚动负荷390 kN，通过在磨坊的前后安排加热和冷却设备。我们发明了一种独特的滚动设备结构，以维护真空度，并获得了两个专利。（1999年4月，专利编号2909903和2920631）2滚动特征的分解，包括磨坊调制、收缩歇斯底里、加热/冷却特征、最后真空/真空维护特征，以及如此量化和分析的方法，为了澄清整个设备的综合性特征，发明了一种额外的小直径（30毫米）滚动组合设备，以保留重型减少量的特征，目前已签发的专利。（1999年7月，专利借阅241072）3对TiAL间金属化合物的热滚动特性的研究已制造用于调查其机械性能和金属结构的Ti-47 Al-3Cr复合物试验材料。作为对高温下滚动特征的研究的结果，它已经证实了一个简单的包装滚动是有效的。4关于铁基复合材料的研究是在一个实验基础上使用真空大气层的Ti-clad钢板和一个Cu-Stainless Clad钢板。特别是，在Ti-Clad板的情况下，250- 270兆帕的高边界切割强度在950-1000 ° C的条件下获得了10%的草稿。对于硬机器材料的最佳滚动方法还没有得到开发，而且设备和技术应该不断改进。

The substance of our study is divided broadly into four groups as follows.1 Development of a high performance vacuum rolling millA test rolling mill has been developed that has capacities of the maximum temperature 1100゜C, the rolling speed 10mpm, the degree of vacuum 10ィイD15ィエD1Torr and the rolling load 390kN, through arranging heating and cooling equipments in front and rear of the mill. We have invented a unique structure of rolling equipment to maintain the degree of vacuum, and two patents have been obtained (April 1999, Patent No.2909903 and 2920631).2 Elucidation of the rolling characteristicsMill modulus, screwdown hysteresis, heating/cooling characteristics, ultimate vacuum/vacuum maintaining characteristic and so were measured and analyzed, to clarify the comprehensive characteristics of the whole equipments.An extra small diameter (30mm) roll-combined equipment was invented to endow the characteristic of heavy reduction, the patent on which is now pending (July 1999, Patent Pending 241072).3 Research on hot rolling characteristics of TiAL intermetallicsA test material of a Ti-47Al-3Cr compound was manufactured to investigate its mechanical properties and metallic structures. As the results of research on its rolling characteristics at higher temperatures, it has been confirmed that a simple pack rolling is effective.4 Research on ferro-radical composite materialsA Ti-clad steel plate and a Cu-stainless clad steel plate were made on an experimental basis utilizing the vacuum atmosphere. Especially in case of the Ti-clad plate, a high boundary shearing strength of 250-270MPa was obtained under the conditions of 950-1000゜C and 10% of the draft.The optimum rolling method for the hard-to-machine materials has not been developed yet, and it is still important that the equipment and technology should be continuously improved.