适用于摩托车零件的多层镍电镀工艺

概括目前我国摩托车零件电镀所用镀层组合，对照有关金属覆盖层的国家标准，认为摩托车零件应用多层镍组合，并提供了工艺配方。     

纳米氧化铜微粒对冷冻机油粘度的影响

面对制冷行业提出的提高制冷系统能效,降低空调用能的要求现对纳米氧化铜微粒对冷冻机油粘度的影响进行了研究,通过降低冷冻机油的粘度来达到提高制冷系统能效的目的.实验通过锥-板粘度计分别对纯油、纯油＋纳米微粒溶胶、纯油＋表面活性剂及纯油＋表面活性剂＋纳米氧化铜溶胶四组流体进行了粘度测量并进行比较,结果发现纯油＋纳米氧化铜微粒不但不能够降低冷冻机油的粘度,反而可能会增加制冷系统的能耗;而纯油＋表面活性＋纳米氧化铜微粒的溶胶稳定性好,又能够降低冷冻机油的粘度,对于降低制冷系统的能耗有一定的参考价值.     

高强度马氏体型非调质钢的研究

通过少量C与适量合金元素Mn、Si、Cr配合,制备了低碳马氏体型非调质钢.结果表明,该钢锻造后经1000℃高温淬水处理能够获得低碳板条马氏体组织以及位于马氏体板条之间的少量稳定残留奥氏体薄膜,不需回火处理就具有较高的强度(σs=1257.7MPa,σb=1382.8MPa)和良好的塑性(δ5=13.9%).     

直膨式太阳能热泵热水蓄热系统实验研究

为了探究太阳能集热系统通过直膨方式与空气源热泵结合的热水蓄热系统存在的问题及解决措施,搭建了直膨式太阳能辅助热泵热水蓄热系统性能实验台,研究分析了影响直膨式太阳能热泵热水系统性能的几种重要匹配关系及其作用规律.     

火电机组AGC功能在黑龙江电网的应用

从普遍意义上阐述了AGC是为电网提供调频服务,电网应对其考核和补偿.给出了黑龙江电网AGC作用、控制策略、考核和补偿标准.从分析目前发电厂对AGC积极性不高的问题出发,阐述了随着电力市场改革的发展应对现行AGC规则进行改进和完善.     

制冷机组高压升高的原因分析及处理

时制冷机组高压升高的原因进行分析和处理，保证制冷机正常运行。     

热泵应用及热泵技术分析

本文回顾了热泵的发展历史，介绍了热泵的种类、特点、使用场合及条件，讨论了几种主要热泵型式在应用时存在的问题，分析了热泵技术的研究进展、应用现状及相关新技术发展趋势。     

Recovery of indium and lead from lead bullion

Lead and indium were recovered by electrolysis and nonequilibrium solvent extraction process from lead bullion.The effects of current density,electrolytic period and circle amnant of electrolyte on the electrochemical dissolution of lead and indium were investigated.The effects of extraction phase ratio and mixing time on solvent extraction of indium and striping phase ratio and stripping stage on the loaded organic phase stripping were also investigated.The experimental results indicate that under optimum conditions,the purity of lead deposited on cathode is 98.5% and the deposit rate of lead is 99.9%,the dissolution rate of indium is 94.28%,the extraction rate of indium is 98.69%,the stripping rate of indium is almost 100%,and the impurity elements,such as Zn,Fe and Sn can be removed.     

Leaching kinetics of low grade zinc oxide ore in NH3-NH4Cl-H2O system

The leaching kinetics of low grade zinc oxide ore in NH3-NH4Cl-H2O system was studied. The effects of ore particle size,reaction temperature and the sum concentration of ammonium ion and ammonia on the leaching efficiency of zinc were examined.The leaching kinetics of low-grade zinc oxide ore in NH3-NH4Cl-H2O system follows the kinetic law of shrinking-core model. The results show that diffusion through the inert particle pores is the leaching kinetics rate controlling step. The calculated apparent activation energy of the process is about 7.057kJ/mol. The leaching efficiency of zinc is 92.1% under the conditions of ore particle size of 69μm, holding at 80℃ for 60min, sum ammonia concentration of 7.5mol/L, the molar ratio of ammonium to ammonia being 2:1, and the ratio (g/mL) of solid to liquid being 1:10.     

碱熔预处理对废旧稀土荧光粉中稀土提取的影响

针对废旧稀土荧光粉特性,采用高温碱熔与酸浸相结合的方法处理废旧稀土荧光粉,考察碱熔温度、氢氧化钠用量、碱熔时间对稀土浸出率和铝回收率的影响,并对碱熔过程中的物相及形貌变化进行分析.结果表明,在碱熔温度为1050℃、氢氧化钠与废粉质量比为2.5∶1、碱熔时间为2 h 条件下,其稀土浸出率可达98%以上,铝回收率可达98%.通过对碱熔产物物相和形貌分析表明,废粉晶体结构被有效破坏,其中稀土以稀土氧化物形式存在,碱熔产物变成无定型云絮状.