纳米Cu对带钢冷轧乳化液极压性能与轧制润滑效果的影响

 将油溶性纳米 Cu（n-Cu）微粒作为添加剂用于板带钢冷轧乳化液中,考察了其对乳化液极压性能和摩擦学性能的影响,在 JC2000C1润湿角测试仪上测定了乳化液在带钢表面的润湿性能,并在四辊冷轧试验机上进行了乳化液润滑下的板带钢冷轧试验。结果表明,在板带钢冷轧乳化液中添加0.06%质量分数的 n-Cu 后,能更好地改善乳化液的极压抗磨性能、降低钢/钢摩擦系数;提高乳化液在带钢表面流动润湿性能的同时,还表现出良好的板带钢冷轧润滑效果,可明显降低板带钢最小可轧厚度,并可以改善轧制带钢板形和表面质量。     

纳米微粒在板带钢冷轧用轧制液中的应用研究

 通过复配与筛选合适的基础油,选择相应表面活性剂、防锈剂、消泡剂等添加剂,并在超声波作用下添加平均粒径为20 nm、经油酸修饰的纳米Fe3O4微粒,研制出适用于板带钢冷轧所需的新型轧制液;在MRS-10A四球摩擦磨损试验机上考察了轧制液对钢-钢摩擦副摩擦磨损性能的影响,采用光学显微镜观察了磨损表面形貌。利用二辊冷轧试验机进行了轧制液润滑下的板带钢冷轧试验,并与传统轧制液进行对比。结果表明,由于纳米微粒的使用,轧制液能更好地改善钢-钢摩擦副的抗磨性能、降低摩擦系数;同时还表现出良好的板带钢冷轧润滑效果,可明显降低带钢轧制过程中的轧制压力、轧机功率等轧制力能参数,并能有效改善轧制带钢板面质量。     

纳米微粒在板带钢冷轧用轧制液中的应用

通过复配与筛选合适的基础油,选择相应表面活性剂、防锈剂、消泡剂等添加剂,并在超声波作用下添加平均粒径为20nm、经油酸修饰的纳米Fe_3O_4微粒,研制出适用于板带钢冷轧所需的新型轧制液;在MRS-10A四球摩擦磨损试验机上考察了轧制液对钢。钢摩擦副摩擦磨损性能的影响,采用光学显微镜观察了磨损表面形貌。利用二辊冷轧试验机进行了轧制液润滑下的板带钢冷轧试验,并与传统轧制液进行对比。结果表明,由于纳米微粒的使用,轧制液能更好地改善钢-钢摩擦副的抗磨性能、降低摩擦系数;同时还表现出良好的板带钢冷轧润滑效果,可明显降低带钢轧制过程中的轧制压力、轧机功率等轧制力能参数,并能有效改善轧制带钢板面质量。     

环保型冷轧硅钢乳化液的研制及其摩擦学性能研究

采用环保型基础油和添加剂研制一种环保型高润滑性能冷轧硅钢乳化液,对其摩擦学性能和润滑性能进行考察,并与KD型商用乳化液的性能进行对比。结果表明,与KD型商用乳化液相比,环保型乳化液的摩擦学性能明显提高,环保型乳化液润滑下的冷轧硅钢板的最小可轧厚度降低了13.3%,轧后板形及硅钢表面质量也更为理想,同时,环保型乳化液还具有良好的退火清净性。综合分析可知,环保型乳化液更适合在高速冷轧硅钢生产中使用。     

锐钛矿相TiO2纳米纤维制备与摩擦学性能

采用简便且可重复性较好的碱熔法制备锐钛矿相TiO2,采用简便的表面修饰技术对其进行表面改性,得到TiO2纳米纤维,并采用XRD、SEM和FT-IR方法对其进行表征。利用四球摩擦试验机考察其作为油品润滑添加剂的摩擦学性能。结果表明,所合成的TiO2纳米纤维为锐钛矿相结构,结晶度和纯度较高,而且在油品中具有良好的分散性;TiO2纳米纤维具有良好的抗磨减摩性能,并能够很好地提高油品承载能力,当其加入量为1.5%(质量分数)时,抗磨减摩以及提高承载能力的效果最好。这些特性使得锐钛矿相TiO2纳米纤维有望在未来成为绿色润滑油添加剂。     

环保型润滑添加剂对冷轧板带钢轧制液润滑性能的影响

 利用正交试验设计分析了乳化剂质量分数、植物油质量分数、润滑添加剂种类对冷轧轧制液稳定性的影响。考察了环保型润滑添加剂钼氨络合物、水基钼化合物、含氮硼酸酯对轧制液摩擦学性能和轧制润滑性能的影响。结果表明,影响轧制液稳定性因素按效果大小排列的顺序为植物油质量分数、乳化剂质量分数、润滑添加剂种类;轧制液中添加质量分数2%的含氮硼酸酯后,能更好地改善其摩擦学性能,与添加了传统润滑添加剂的轧制液相比,油膜强度(P_B)提高了13%,摩擦系数降低了13%~17%,磨斑直径降低了10%~15%,摩擦系数随时间的延长呈降低趋势并趋于稳定;同时表现出优异的冷轧润滑效果,平均轧制力降低了14%~19%,带钢最小可轧厚度得到降低,轧制过程的摩擦系数降低了19%~25%,轧后板带钢表面质量得到明显提高。     

润滑油用纳米TiO2的表面改性及自修复性能研究

采用油酸对纳米TiO2进行表面改性，使其稳定分散于基础油中。利用HQ-1摩擦磨损试验机考察纳米TiO2的自修复性能，并探讨其自修复机理。试验结果表明，经改性后的纳米TiO2粉体作为润滑添加剂具有良好的分散稳定性、减摩抗磨性和自修复性。     

乳化型轧制液的质量标准研究

对国内目前所使用的冷轧薄钢板(汽车钢板)轧制液母液和乳化液的质量指标及常用试验评定方法进行了考察，并对产品的性能要求进行了研究与分析，制订出一套标准以供参考，包括乳化液稳定性、润滑性、防锈性、抗泡性、使用周期及粘度、闪点等性能。     

含纳米ZnO水基轧制液的摩擦学性能研究

过分散剂、极压剂、防锈剂的复配,将纳米ZnO均匀分散在水基轧制液中,并由正交实验研究纳米粒子含量、分散温度、分散时间对水基轧制功能液摩擦学性能的影响,评选出最佳条件。结果表明：在纳米ZnO质量分数为0.4%、加热温度为60 ℃、搅拌时间为10 min时,所配制的水基轧制功能液的摩擦学性能最佳。通过摩擦学分析和冷轧润滑实验,进一步验证了采用最佳条件时所得轧制液具有优异的润滑性能。同时,通过对轧后带钢表面的形态和元素进行分析后,认为纳米粒子的润滑作用机理为：纳米粒子与添加剂相互结合,形成极压润滑膜,且可填充在缺陷部位,降低带钢表面粗糙度,提高表面质量。     

全合成不锈钢冷轧液的研制

为了提高轧制表面的光洁度,抑制细菌繁殖和改善工作环境,研制了一款全合成不锈钢冷轧液。分析了不锈钢冷轧工艺对轧制液的性能要求,拟定了全合成不锈钢冷轧液的研制目标。全合成不锈钢冷轧液由轧制液和提高润滑性能的轧制添加剂两部分组成。通过配方考察,轧制液由EO/PO水溶性聚醚,3.0%水溶性含硫极压剂,2.0%水溶性磷酸酯抗磨剂,3.0%癸二酸单乙醇胺防锈剂,耦合剂,pH值调整剂和抗泡剂组成。轧制添加剂为EO/PO水溶性聚醚。研制的全合成不锈钢冷轧液具有良好的清净性能,最大无卡咬负荷为588 N,达到了研制目的。实际应用表明,研制的全合成不锈钢冷轧液的表面光洁度高,能够满足不锈钢冷轧的润滑需求。(图0表7参考文献3)     

Research on Lubrication Behaviors and Mechanism of Nano-Copper Used in Emulsions for Strip Cold Rolling

In this paper,nano-Cu particles with an average size of smaller than 20 nm were dispersed under ultrasonic agitation in emulsions for cold rolling of steel strips.The tribological properties of the cold rolling emulsion doped with nano-Cu particles were evaluated by using a four-ball machine,and the worn surfaces of the steel balls were checked by an optical microscope.A JC2000C1 wetting angle tester was also applied to study the variation in the emulsion’s wetting performance when nano-Cu particles were incorporated.Furthermore,the lubricity of the emulsion doped with nano-Cu for steel strip cold rolling was evaluated on a four-high rolling mill for comparison with the emulsion without using nano-Cu particles.Test results indicated that nano-Cu particles as the additive used in cold rolling emulsion were able to improve the wetting property,friction-reducing,anti-wear,and extreme pressure performance of the base stock significantly.At the same time,nano-Cu particles also showed good lubricity to the cold-rolled steel strips.Namely,the cold-rolled steel strips under the lubrication of the cold rolling emulsion containing nano-Cu particles had considerably decreased the after-rolling thickness and achieved excellent surface quality as well.Finally,the lubrication mechanism of nano-Cu particles in the emulsion for cold rolling of steel strips was discussed.     

冷轧乳化油对带钢表面清洁度的影响

减少冷轧带钢表面残留物，可以改善成品退火表面清洁度。本研究通过两种轧制乳化油的对比使用实验，应用热重与差热分析方法，分析了乳化油的油品性能对轧后带钢表面及成品退火表面清洁度的影响。结果表明，只要在适当提高轧制油润滑性能的前提下，提高油品的热挥发性能，就能减少带钢轧后表面残留物，有效改善冷轧板表面清洁度。     

电子压延铜箔轧制油的研制及其润滑性能的研究

以多种直链醇、酯和新型磷酸胺以及唑类缓蚀剂为主要添加剂研制新一代电子级铜箔轧制油CFCO。在实验室对该轧制油的摩擦学性能及抗腐蚀能力进行研究,并在工业轧机上进行冷轧润滑试验考察油品的润滑性能。结果表明：CFCO铜箔轧制油与国外油品性能相当,具有优异的摩擦学性能,显著降低表面粗糙度,增大表面形貌的均匀性;同时具有良好的缓蚀防锈性能,有利于解决轧后板面氧化变色问题,提高产品表面质量。     

乳化液中有机缓蚀剂对铜板腐蚀行为的影响

采用极化曲线和电化学阻抗谱研究乳化液中噻二唑类有机油溶性缓蚀剂对铜板腐蚀的影响，并利用SEM、XPS方法观察铜板表面形貌，分析其缓蚀机理。结果表明：噻二唑类缓蚀剂能够明显降低乳化液对铜板腐蚀的电流密度，提高其缓蚀效果，且浓度为1.5 mol/L的噻二唑类缓蚀剂具有最佳的缓蚀效果；噻二唑类缓蚀剂与Cu表面相互作用形成Cu(I)-噻二唑的螯合物以保护铜板表面，抑制铜板的进一步腐蚀。     

板带钢冷轧轧制液及其润滑性能研究

Appropriate base oils and homologous additives such as extreme pressure and anti-wear agents,oiliness agents and antioxidants were selected,and experiments testing the compatibility performance between additive,base oil and other components were carried out to develop the SK and SD series of rolling oils for cold rolling of stainless steel.The developed oils were used in the stainless steel cold rolling lubrication experiments,and were successfully applied in the actual cold rolling operation of stainless steel.Compared with a foreign product,the tribological properties,the thermal oxidation stability,and the rolling lubrication performance of the developed stainless steel cold rolling oils were studied.Test results showed that the tribological properties of the thereby developed rolling oils and the reference one were almost at the same level,and to some extent the performance of rolling was even better than the foreign product,at the same time the stainless steel sheet could retain its well annealed performance.Meanwhile,within a certain range,the lubrication of the rolling oil became better as its viscosity increased at the same level of saponification value,which could provide a lower friction coefficient,so that a higher maximum reduction ratio of the rolled piece through a constant roll gap and a minimum thickness could be secured.Also,similar phenomena appeared as the saponification value increased at a same viscosity level of the rolling oils.     

缓蚀剂对铜箔轧制油润滑效果的影响

The 2,5-bis（ethyldisulfanyl）-l,3,4-thiadiazole （T561）, benzotriazole （BTA）,1-N, N-bis （2-ethylhexyl） aminomethyl-4-methyl-lh-benzotriazole （IRGAMET39） and I-IN, N-bis （2-ethylhexyl） aminomethyl] methyl benzotriazole （TT- LX） have been evaluated as corrosion inhibitors used in rolling oil for cold rolling of copper foil. The MRS-10A four-ball friction and wear tests have been carried out to compare their tribological properties, and the lubricating performance of rolling oils has been studied through rolling experiments. The oil sample containing IRGAMET 39 has the same PB value as that one containing T561, with the coefficient of friction increased by 35.6% and wear scar diameter decreased by 4%. The minimum rolling gauge has been studied after rolling lubrication, but the results show that inhibitors have no effect on it. Scanning electron microscopy （SEM） and energy dispersive spectrometry （EDS） analyses have indicated that the inhibitor is adsorbed on the copper surface to prevent copper from being corroded easily. In addition, the LEXT OLS4000 laser confocal microscopy has been used to observe the foil surface which shows that the streaks of foil surface are clear, the scratches are shallow and the surface failure is improved effectively.