石油支撑剂焙烧技术的研究

分析了支撑剂在回转窑中焙烧的热力和动力条件,调整相关焙烧设备的温度参数,来消除细粉过细、升温过快、焙烧区域过短等不利于高温焙烧的因素,使物料能够在最佳焙烧温度区得到有效、均匀的焙烧。以达到产品耐压强度、焙烧温度、成品率三者的统一。     

烘烤硬化高强深冲冷轧汽车板BH340的研制开发

介绍了烘烤硬化高强深冲冷轧汽车钢板BH340的开发.试验证明,鞍钢生产的烘烤硬化冷轧钢板BH340是具有适中烘烤硬化值(BH值)及良好成形性的汽车用钢,能够满足汽车实际生产工业的要求.     

汽车板材烘烤硬化特性的研究

介绍了烘烤硬化的微观机理及板材烘烤硬化特性的测定方法，针对宝钢生产的BTH340烘烤硬化板，测定了其烘烤硬化值，并通过试验系统地研究了工艺参数预变形、烘烤温度和烘烤时间对其烘烤硬化特性的影响。试验结果表明BTH340烘烤板具有良好的烘烤硬化性。     

Effects of Prestrain and Baking on the Tensile and Fatigue Properties of Fe–0.1C–5Mn Transformation-Induced Plasticity Steel

This study aims to investigate the effects of uniaxial tensile prestrain (PS) and bake hardening (BH) on tensile and force-controlled (R = 0.1) high-cycle fatigue (HCF) properties of Fe–0.1C–5Mn medium Mn transformation-induced plasticity (TRIP) steel. Stress-life data of the as-received (AR: 0% prestrain) and 10%, 15%, and 20% prestrained (PS10, PS15, PS20) samples have been generated under both baked and unbaked conditions. It is manifested that prestraining increases the HCF life of the steel. The addition of BH further increases the HCF life. The fatigue limit is greatly improved from 433 MPa (AR) to 532 MPa (BH20), and the maximum incremental value is as great as 99 MPa. It is attributed to the austenite to martensite transformation (progressive TRIP effect) that occurs during the prestraining and cyclic loading processes.     

压缩空气—氨浸法生产氧化铜工艺在广兴化工厂的应用

直接向Cu—NH3 —CO2 -3 体系中以压缩空气方式供氧 ,能将体系中单质铜转变成 [Cu(NH3 ) 4]2 + 形式 ,经过蒸氨得到氧化铜。该工艺成本低 ,回收率高 ,工艺简单。