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。     

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。     

纳米MoS2在钢冷轧轧制液中的摩擦润滑性能研究

The nano-MoS2 particles were adopted to substitute for the extreme-pressure and anti-wear additives to the rolling fluid for steel strips.An optimal formulation and technical process for adding nano-MoS2 particles to the rolling fluid were obtained through orthogonal experiments with three factors at three levels.The tests have led to the following conclusions:(a) the nanoparticles should be added to a base oil with high saponification value;(b) the concentration of nanoparticles in rolling fluid should be equal to 0.6%;and (c) when the reaction time needed for surfactants (oleic acid,for example) to modify the nanoparticles was 40 min,the rolling fluid could have the best tribological properties.The lubricity of rolling fluid was verified by using a 4-high cold rolling test mill which showed that the rolling fluid with nano-MoS2 particles had the excellent lubricant performance to improve the surface quality of the steel strip remarkably.The mechanism of nano-MoS2 particles in the rolling process has been investigated by a series of characterization instruments,which have showed that,with its fullerene-like structure,the nano-MoS2 particles have self-lubricating properties and extra-low friction coefficient,and can easily form a protective film with low shear strength on the surface of friction pairs.     

不锈钢冷轧薄板轧制油研制

不锈钢、钛、钛合金、镍基合金是钢中较特殊的,镍、钴含量高,它们硬且低热传导性,使得在碎屑中形成高温,轧辊与碎屑交互面的温度也很高,使轧辊产生磨损和轧板划痕及变形,通过对油性轧制油的配方组分性能评定和配方设计,结合不锈钢冷轧设备的原理工艺特点,研制出性能较好的不锈钢冷轧薄板轧制油。     

铝冷轧润滑油

概要介绍了铝冷轧用润滑油的组成，影响铝冷轧用润滑油性能和铝冷轧效果的各种因素以及措施。     

不锈钢板冷轧润滑剂

介绍了不锈钢冷轧加工的性能及对润滑剂的要求,润滑剂对不锈钢板的冷轧加工有较大的影响,要根据实际情况选择合适的润滑剂.     

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.     

冷轧油性能对薄板高速冷轧机轧后钢板表面热划伤的影响

钢带冷连轧机高速轧制,尤其是轧制极薄料时轧后钢板表面以及轧制工作辊表面容易出现热划伤。严重热划伤时需要立即更换工作辊,并且钢卷会被降级处理。宝钢某冷连轧机组是台西马克5机架6辊连轧机组,在轧制0.5 mm以下的薄料时轧制速度超过800 m/m in容易出现热划伤,因此薄料轧制速度需要控制在此速度以下,极大地影响了轧机产量。文章对该冷轧机组的划伤现象进行了分析,通过优化冷轧油配方,加强辊缝润滑和冷却解决了热划伤问题。研究结果表明:冷轧油在高温高压条件下辊缝中成膜性能、润滑性能以及冷轧油乳化液对辊缝的冷却性能等都是热划伤产生的影响因素。对轧制油这些性能进行针对性优化,是提高薄料轧制速度和改善热划伤的有效手段。     

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.     

冷滚压压力对钻具螺纹疲劳寿命影响试验研究

为了研究冷滚压工艺的滚轮压力对钻具螺纹疲劳寿命的影响,在钻井现场选择钻杆、普通钻铤、无磁钻铤。在其上切取材料,加工成ø12.04 mm×80 mm的试样,并在试样的中部加工类似NC50螺纹的凹槽。3种材料的试样各13件,分别对其凹槽进行冷滚压工艺处理,滚轮压力分别为0、0.5、1.0、…、6.0 MPa。疲劳试验结果表明,滚轮压力对钻具螺纹的疲劳寿命有较大影响,每种材料存在1个最佳的滚轮压力。经过冷滚压工艺处理后,钻杆试样的疲劳寿命最高提高了14.44倍; 普通钻铤试样的疲劳寿命最高提高了170.23倍; 无磁钻铤试样的疲劳寿命最高提高了7.83倍。     

J55钢纵剖钢带高频焊套管的研制

针对高频焊（HFW）套管用J55钢纵剖热轧钢带存在成分偏析,且钢带中心偏析较严重,制管后中心偏析带位于焊缝处,在线焊缝正火热处理后,焊缝热影响区偏析带上便出现条状马氏体的问题,在材料设计上通过降C、降Mn来减轻钢带中心偏析,加入微量Nb补偿因降C、降Mn而导致的强度损失,改善管加工工艺性能并防止粘扣。加入微量Ca净化钢液,促使MnS球化,提高材料的综合性能。研制出一种适用于高频焊J55钢级纵剖料用钢及符合API SPEC 5CT标准的套管。     

俄罗斯管线钢轧制新工艺的研发

俄罗斯马格尼特哥尔斯克钢铁公司与地方科研院所合作,开发出在2 000 mm轧机上减少管线钢带钢表层缺陷的有效轧制方法.提出将粗轧机组最初3个机架中的压下量降低3％～5％.结果表明,采用该方法可形成较好的轧制条件,降低了缺陷的产生概率.另外,还对轧制厚规格带钢时的裂纹产生概率进行了研究,建议轧制厚度超过16mm的带钢时分...     

钢轧制润滑油概述

概要介绍了钢热轧润滑油的组成及其润滑特性、钢热轧的影响因素。还介绍了钢冷轧中出现的热擦痕和污渍的产生机理以及提高耐热擦痕性和清净性的措施。     

焊管生产用带钢铣边机设计研究

阐述了铣边要在国内外发展状况,分析了铣边机的主要特点,基本结构形式,铣削速度的选择和铣边机设计的主要注意事项,并对铣边机应用于焊管机组上对带钢实行不剪边工艺作了一些探讨。     

冶金行业精轧设备润滑故障分析与改进

对冶金行业精轧设备润滑故障进行了分析,通过选用合适的润滑剂、确定润滑剂的粘度,润滑油泵的改型和润滑管路的改进,取得了良好的效果。     

JC-458-BX冷轧薄板轧制油的研制

成功研制了JC-458-BX冷轧薄板轧制油。将其应用于本溪钢铁集团公司冷轧薄板厂四机架CDCM连轧机上,具有优异的轧机清净性、退火清净性及润滑性,可轧制0.46mm以上各种规格的簿板。工业应用表明,JC-458-BX冷轧薄板轧制油达到了国际同类产品的先进水平。     

钢铁轧制润滑技术发展与展望

鉴于轧制工艺润滑技术在轧钢生产中的重要地位,文章就轧制工艺润滑的作用与节能环保的关系以及对轧制过程的影响进行了深入的阐述。同时列举了在热轧和冷轧过程的应用效果,包括热轧过程的减摩降压与节能、冷轧过程的表面质量控制,最后提出了轧制工艺润滑的应用领域和研究方向。     

钢板冷轧乳化油的应用

钢板冷轧乳化油具有较好的润滑性能、冷却性能、防锈性能和退火清净性能,实际应用表明完全满足钢板冷轧的工艺要求.     

冷轧带钢对接焊过程控制及焊缝质量分析

冷轧厂酸洗线上的对接焊 ,由于受钢质及操作经验影响 ,使焊缝质量难以保证 ,过轧机时焊缝断带率较高 ,影响冷轧产品的质量。通过对焊接过程、焊接参数、影响焊缝质量的各种因素分析研究 ,对焊接参数进行了修改、调试 ,基本解决了焊缝质量问题