Scientific research foundation for intelligent rubber machinery manufactured in Jiaozhou

The news from Shandong, China, a few days ago, Qingdao Mesnac Co., Ltd. invested 770,000,000 yuan to build China＇s largest scientific research and manufacturing base for intelligent rubber machinery and pressure vessels, the foundation laying ceremony was held in Jiaozhou city, Shandong Province. The base is located in Jiaodong town of Jiaozhou city, with a total area of 720 hectares, it will be completed in two phases.     

Design and investigation of a novel concentrator used in solar fiber lamp

A novel concentrator used in solar fiber lamp has been designed and made. The method of the design has been introduced. The lamp has been tested under the real solar condition and the experiment curves have been given. The light transmission will be influenced by the structure of the lamp and the diameter of the fiber, which has been studied in this paper. The experimental results show that the brightness of this solar fiber lamp is about the brightness of a 6-W ordinary electrical energy-saving lamp. The computer simulation for the lamp has been presented and the improvement schemes are proposed.     

Diffusion mechanisms of vacancy and doped Si in Al3Ti from first-principles calculations

First-principles calculations were employed to study the migration of vacancy in clean and Si-doped Al₃Ti. The effect of Si doping on the formation of vacancy and the diffusion of doped-Si atom in the Al₃Ti were also investigated. It is found that, under Al-rich condition, the formation energies of Al vacancies in Al₃Ti with Si doping are decreased compared with those in clean Al₃Ti. The preferred migration paths of vacancies are not changed when Si occupies Al site, but the migration energy barriers for the majority of paths are decreased after Si doping. The doped-Si atom on Al site prefers to diffuse via the nearest Al vacancy.     

变频器冷却系统改造

变频调速技术已在各行业中得到广泛应用,散热问题成为影响其自身运行可靠性和稳定性的重要因素.介绍了变频器常用冷却方式,通过对助剂厂变频器冷却系统进行改造,得出采取配套适用的变频器专用冷却系统,对提高设备安全稳定性能,保证变频器的长周期稳定运行,具有积极意义.     

新时期反向工程的内涵与研究过程分析

在我国强调自主创新的前提下,本文探讨了新时期反向工程的内涵,既是一个技术获取的过程,更是一个模仿创新的过程,最终是为了提高自主创新能力。本文对反向工程的研究过程进行了划分,并对实施的具体过程进行了分析,强调了技术获取之上的模仿创新,并提出了三种模仿创新的方式。     

用AutoCad VBA处理土地调查数据

以AutoCad软件为基础的数据处理平台,利用其二次开发工具VBA,连接到Access数据库,实现土地调查数据的自动处理,达到了提高生产效率、控制质量的目的.     

300mm直拉单晶硅中的氮元素对氧化诱生层错的影响

采用直拉法生长普通和掺氮硅单晶,研究不同含氮浓度的晶体中氧化诱生层错(OSF)的行为.从4组晶体的相同位置取样,并对样品进行1100℃湿氧氧化实验.实验结果表明,随着晶体中氮浓度的增加样品中氧化诱生层错环(OSF-ring)宽度变大,且环内OSF缺陷的密度增加.这说明,氮的掺入促进了晶体中满足OSF形核要求的原生氧沉淀的形成,使OSF形核区变大.     

Lubricating properties of polyalkylene glycol and organic phosphate ester mixed aqueous solutions

Till now,water based lubricants,especially aqueous solutions,have not been employed in the elastohydrodynamic lubrication(EHL)due to their poor film forming capability or low wear resistance.In this paper,we proposed a method to develop water based lubricant:employing polyalkylene glycol solution as base stock to improve EHL film forming capability and using organic phosphate ester(DPZ)as anti-wear additive to improve wear resistance property.The lubricating properties of the mixed solutions,including load carrying capability,wear resistance property,friction reduction property,EHL film forming behavior,were investigated.The experimental results indicate that the mixed solution presents excellent lubricating properties,which make it a promising candidate in developing water based lubricants.     

变压器专用密封材料的研制

油浸式变压器密封材料性能优化是解决变压器漏油故障的重要途径。分析了变压器密封材料老化原因,提出了变压器密封材料应具有的性能要求,并以此为目标研发了变压器专用的密封材料软木橡胶。详细叙述了软木橡胶的特性,通过试验表明,软木橡胶是一种性价比高的优良新型变压器专用密封圈材料,用这种新型材料制成的变压器密封圈已获得了国家专利。该材料还可用于其他电气设备。     

电解铝液生产高品质6061铝合金圆铸锭工艺研究与实践

探讨了用电解铝液直接生产高品质6061铝合金圆铸锭工艺技术,主要在熔体处理、炉内精炼、晶粒细化、炉外在线净化、均匀化处理和生产设备等方面采取了相应的技术措施.结果表明,优化后的生产工艺制度能够满足高品质6061铝合金圆铸锭的质量要求,在均匀化过程中适宜的均匀化工艺为560℃×8h.