利用油母页岩生产高标号水泥试验及生产研究

以油母页岩为原料,结合抚顺大伙房水泥有限公司现有生产工艺条件,改进生料配料系统,研究用油母页岩配制的生料煅烧方法生产出高标号水泥,同时利用粉煤灰为活性掺合料.粉煤灰二次资源得到了利用,既降低了水泥成本,也减少了粉煤灰的污染,又改善了环境,发展了循环经济,实现了可持续发展.     

Y对Fe-Si-B非晶合金的微观结构的影响

采用Lorentzian法和非晶计算理论,分析少量稀土Y取代Fe对Fe78Si9B13非晶合金微观结构的影响,从微观结构变化的角度对合金非晶形成能力及热稳定性的变化做出相应解释.结果表明:随着Y含量的增加,合金的第一近邻半径逐渐增大,原子排布有序度降低,非晶漫散射峰的半高宽增大;非晶合金的配位数和堆垛密度均随着Y含量的增加先增大后减小,分别从短程序和中程序的角度反映出原子密排程度随Y含量的增加先增后减,这与合金非晶形成能力和稳定性的变化趋势相一致.     

船用发动机曲轴单拐的塑性成形仿真分析

以船用发动机曲轴单拐为研究对象,通过Solid Works软件建立曲轴单拐锻造过程中毛坯、模具的三维模型,在金属塑性成形CAE软件DEFROM-3D平台上进行模拟仿真,以探究不同应变速率、温度下金属塑性变形过程中的金属内部流变应力与外部变形条件之间的关系,并对所得的数据进行了科学分析.分析结果表明:当应变速率为定值时,预设温度越高,应力-应变曲线则相对降低;当毛坯温度一定时,应变速率越高则试样内部流变应力越大,抗疲劳强度越差.该结果也为下一步的优化设计提供理论依据.     

局部感应加热对高强钢方管二次辊压成形的影响

本文通过对高强钢方管角部进行局部感应加热，提高其弯角区域的成形性能，降低其变形抗力，由此在不影响非变形区域组织性能的前提下，获得所需方管的截面尺寸和组织性能。在热辊压过程中，坯料在没有模具限制的方管角部外侧邻近区域发生堆积，且随着加热温度上升，角部外侧金属堆积更明显。同时，在方管内角表层出现显微裂纹恶化，裂纹以树枝状生长。热辊压成形后的残余温度会产生一个自回火过程，能够明显降低残余应力，且随着温度的升高，残余应力降低的幅度变大。当加热温度在650℃以上时，自回火对残余应力的影响大于宏观裂纹的扩展能力，起主导作用，且压扁过程中压下量超过方管对角线长度2/3时也不会产生裂纹。     

在聚合物成型实验中开设微流控的探索

微流控技术有着卓越的优点:设备经济,操作简单和易得粒径均匀、形貌及结构可控的微珠和微胶囊。微流控技术是一种有别于传统成型加工的技术,有着广阔的应用前景。微流控技术从理论到实践都日趋成熟,已经具备了走向实验教学课堂的条件。将微流控实验项目开设在聚合物成型加工专业实验课程中,不仅深化、完善及补充了实验课程内容,还极大地激发了学生的学习热情。该实验深受学生的欢迎,在深化实验教学改革中具有重要的意义。     

Fabrication of bulk glassy Zr41Ti14Ni8Cu12.5Be22.5Fe2 alloy by water quenching

A glassy Zr41Ti14Ni8Cu12.5Be22.5Fe2 rod with a diameter of 9 mm was successfully produced by water quenching.The effects of iron addition on thermal stability and hardness of Zr41Ti14Ni8Cu12.5Be22.5Fe2 bulk amorphous alloy were investigated by XR D,DSC and microhardness test.It is found that the full annealing would enhance the strength of the alloy significantly.The cause of the increase in hardness was analyzed and the formation mechanisms of the bulk amorphous alloy are discussed.     

ICF系统中波导调制器脉冲整形技术

针对波导调制器在激光约束核聚变脉冲整形系统中的应用做了全面的综述 ,在此基础上利用当前国际上通用的制作波导片材料进行了理论和实验研究 .最后分析了激光约束聚变脉冲整形系统对波导调制器的性能要求 ,指出了脉冲整形系统性能的影响因素 .为波导片的实际应用提供了理论和实验依据     

数字成型钛板颅骨修补术后并发症的处理及防治

目的:探讨去骨瓣减压术后,应用数字成型钛板行颅骨修补术后常见的并发症及防治。方法:回顾86例数字成型钛板修补术患者的临床资料,总结术后并发症的发生原因及处理方法。结果:86例患者中14例术后出现不同程度的并发症,其中继发性出血2例、皮下积液4例、钛板外露2例、继发性癫痫6例。结论:数字成型钛板颅骨修补术是处理颅骨缺损的常规手术,降低并发症的发生,对提高手术成功率有重要的意义。     

The new finding of Neogene marine low resistivity light oil field in the western part of Pearl River Mouth Basin

Based on the new finding of Wenchang L low-resistivity light oil field, the finding process, reservoir characteristics and pool-forming pattern were studied. The oil-rock correlation, neritic reservoir type, hydrocarbon conduct system and dominant migration and accumulation direction,and new techniques were discussed. The results showed that large amount of hydrocarbon generated by shallow lacustrine mudstone and shale of Eocene Wenchang formation could migrate from sag to Qionghai uplift distantly; neritic shoal-bar reservoir have developed in the 1st member of Zhujiang formation, dip-sag faults and regional good marine sandstone layers of the 1st and the 2nd member of Zhujiang formation have constituted hydrocarbon conduct system in Qionghai uplift; the late fault system which were controlled by Dongsha tectonic movement constructed the connection between lower hydrocarbon and upper neritic shoal-bar reservoir. Therefore, the pool-forming pattern with "vertical migration and accumulation, secondary structure-lithology-dominated" was proposed. Finally the enlightenment of explorating new findings was discussed.     

Forming analysis and application for aluminum alloy material

The increase in car ownership brought about by energy shortages,and environmental crises became more acute.The most effective way to achieve energy saving and emission reduction of car is to improve engine efficiency.In addition to that,lightweight body is the key.Aluminum,magnesium alloy as significant materials of lightweight,and the application amount in the car body is a significant upward trend.However,there is high cost of material,with immature applied technology and a series of bottleneck problems.All of them affect general application of lightweight materials. This paper focuses on forming process issues for aluminum,magnesium alloy and the solutions to achieve.