铁覆膜砂,Iron-oxide-coated sand
1)Iron-oxide-coated sand铁覆膜砂
1.Study on preparation and adsorption characteristics of multi-element modified iron-oxide-coated sand改性铁覆膜砂的制备及吸附性能研究
2.In this paper, theIron-oxide-coated sand absorption character prepared in different temperatures was studied, mainly tested its absorb hexad chromium, and the inherent reason that formed this differences was explained.本文研究了不同温度下制备的铁覆膜砂吸附性能的差异,对铁覆膜砂吸附Cr(Ⅵ)的性能进行了综合的测试,说明了形成这些差异的内在原因制备温度对IOCS的吸附性能有显著影响,一般低温制备的IOCS要比高温制备的铁覆膜砂吸附性容量较大,去除效率较高;覆盖在石英砂表面的铁氧化物在不同的焙烧温度下形成了不同的物质,110℃的低温一般形成FeOOH(针铁矿),而600℃高温下形成的则为α-Fe2O3(赤铁矿)。
英文短句/例句
1.Study on preparation and adsorption characteristics of multi-element modified iron-oxide-coated sand改性铁覆膜砂的制备及吸附性能研究
2.Preparing Green Molding Sand by Using Returned Sand Containing Collapsed Resin-Coated Sand用混有溃散覆膜砂的旧砂配制湿型砂
3.The sand faced-iron mould casting process is a special iron castings production process, according which castings are to he cast in the iron moulds having a thin layer of the resin sand facing in their inner surfaces.铁型覆砂铸造是指在金属型（铁型）内腔覆上一薄层树脂砂，然后采用这种覆砂铁型浇注铸件。
4.Study on the Test of Novolaks and Strengthening the Resin Coated Sand;覆膜砂用树脂的性能检测和提高覆膜砂强度的研究
5.Casting method and Equipment Used for Resin Sand-Coated Permanent Mould Cast Wheel Hub Castings轮毂类铸件覆砂铁型铸造工艺及设备
6.Precoated Resin Sand Direct Casting Mold of Pipe Hoop Based on Selective Laser Sintering基于SLS管箍零件的覆膜砂铸型制造
7.Effect of Raw Materials on Performance of Resin Coated Sand原材料对酚醛树脂覆膜砂性能的影响
8.Using Resin Sand-Coated Iron Mold to Produce Ductile Iron Brake Disc用覆砂铁型铸造工艺生产球铁列车刹车盘
9.An Experiment of Production of S.G.Cast Iron QT6000-3 with Sand Coated Permanent Mold采用覆砂金属型工艺生产QT6000-3球墨铸铁的试验
10.Predicting Study on Inrush of Sand and Overburden Failure of the Full Mechanized Top-coal Caving under Loosening Sandstone Aquifer in the Tie-bei Coal Mine;铁北煤矿松软砂岩含水层下综放开采覆岩破坏及溃砂预测研究
11.Research of the Material and Manufacture Technique of Selective Laser Sintering of Resin Coated Sand;覆膜砂选择性激光烧结材料及成形工艺的研究
12.Research on Foundry Coated-sand Laser Rapid Prototyping Technology and System;铸造覆膜砂激光快速成型方法及系统的研究
13.Study on the Method of Profile Failure-based Laser Rapid Prototyping for Coated Sand;基于轮廓失效的覆膜砂激光快速成型方法研究
14.Experimental Study on Watermelon Yield Affected by Film Width in the Old Gravel-mulched Field不同覆膜宽度对老压砂地西瓜产量的影响试验
15.Application of resin-coated sand for fracturing stimulation in Yaoyingtai Oilfield覆膜砂压裂改造技术在腰英台油田的应用
16.Study on Performance of Pre-coated Sand Core Used for Cylinder Block and Cylinder Head发动机缸体、缸盖用覆膜砂芯性能的研究
17.Cause and Precaution of Shrinkage Defects of Nodular Cast Iron Crankshafts Produced in Sand-coated Metal Mold铁模覆砂球墨铸铁曲轴收缩缺陷的产生原因与预防措施
18.The Basic Experimental Research of Selective Laser Sintering in Rapid Prototyping Based on the Material of Coated Sand;基于覆膜砂的选择性激光烧结快速成型基础实验研究
相关短句/例句
permanent mould with sand facing覆砂铁型
3)Sand Lined Metal Mold铁型覆砂
1.Solidification Simulation and Shrinkage Defect Prediction of S.G. Iron Casting inSand Lined Metal Mold;铁型覆砂球墨铸铁件凝固模拟及收缩缺陷预测
4)sand-coated chill覆砂冷铁
1.Shrinkage porosity, surface depression, sand inclusion and blowhole had been defects of the nodular iron clamp casting, and these defects have been eliminated by adopting following measures: on the base of former casting method, the shrinkage defect was eliminated by using chills; the chills-caused blowhole defect was eliminated by usingsand-coated chills as substitute for the normal chills.球铁夹钳生产过程中曾出现缩松、缩陷、砂眼和气孔等缺陷,在原工艺的基础上,采用外冷铁消除了缩孔、缩松缺陷;并采用覆砂冷铁取代普通冷铁,消除了冷铁引起的气孔缺陷。
5)coated sand覆膜砂
1.Special PF Resin for Light-alloy Coated Sand;轻合金覆膜砂专用酚醛树脂的开发研究
2.Modeling of laser energy input in process ofcoated sand SLS by thermal imager;热像仪建立覆膜砂SLS过程激光能量输入模型研究
3.Research on The Compressive Resistance of Coated Sand Pattern In Selective Laser Sintering;对SLS覆膜砂制件抗压强度的研究
6)Resin coated sand覆膜砂
1.The Review and Prospect of Easy Shakeout Resin Coated Sand for Aluminum Alloy Castings;铝合金铸件用易溃散覆膜砂的现状与发展
2.The forming process of selective laser sintered resin coated sand cores includes two steps which are selective laser sintering and post-curing.选择性激光烧结覆膜砂芯的成形过程分烧结和后固化两步。
3.The selection of resin and curing agent and the equipment and the technology are discussed for manufacturing resin coated sand as proppant for hydraulic fracturing.讨论了制备用作压裂支撑剂的树脂覆膜砂使用的树脂和固化剂的选择、包胶设备及工艺。
延伸阅读
预涂膜覆膜工艺的控制要点及注意事项覆膜前的准备工作(1)用于覆膜的BOPP薄膜的厚度一般应在0．01—0．02mm之间，透明度应在90％以上，且热收缩率要小。(2)上机前，应检查日oPP薄膜是否在保质期内，薄膜上的涂胶层是否均匀，表面是否被划伤，压伤。薄膜的涂胶面要穿过加热滚筒并面向印刷品。(3)橡胶辊和加热滚筒一定要保持洁净，两边的压力平衡辊必须转动灵活。(4)根据纸张厚度调节和确定输纸辊的间隙。(5)根据产品尺寸选择不同宽度的BOPP薄膜，同时应根据产品的要求调节好侧规。(6)调节好导膜辊，使薄膜两边的张力一致，薄膜的表面孚展无皱褶。预涂膜覆膜工艺控制要点预涂膜覆膜工艺的关键技术主要是对覆膜温度、覆膜压力和覆膜速度的控制等几个方面。1．覆膜温度温度是预涂膜覆膜的首要因素，因为预涂膜上的黏合剂是热熔胶，温度决定了热熔胶的熔融状态，决定了热熔胶分子向BOPP薄膜、印刷品墨层、纸张等的渗透能力和扩散能力。尽管覆膜温度的提高有助于黏合强度的增强，但温度过高会使薄膜产生收缩，产品表面发亮、起泡，产品产生皱褶。根据实践经验，覆膜温度应控制在70～100℃之间。2. 覆膜压力纸张的表面并不平整，只有在适宜的压力下，熔融状态的热熔胶才能完全覆盖印刷品表面，覆膜产品才光亮，黏结效果好。压力小，黏结不牢；压力大一些，有助于提高薄膜和纸制品间的结合力。但是，如果压力过大，又容易使产品产生皱褶，而且容易使橡胶辊表面受伤。变形，降低橡胶辊的使用寿命。随着压力的增大，使橡胶辊和加热滚筒间的接触压力增大，使两辊的轴头、轴承负荷加重，磨损加剧，同时使传动系统的负荷加重，因而压力太大会影响整机的使用寿命。 在实际生产中，应当根据纸张的不同来调节压力。比如对于纸质疏松的纸张，压力要大一些，反之则小一些。根据经验，覆膜压力一般设定为8～25MPa为宜。3．覆膜速度覆膜速度的快慢决定了预涂膜上的黏合剂在加热滚筒上的熔化时间以及薄膜和纸张的接触时间。覆膜速度慢，BOPP薄膜上黏合剂的受热时间相对较长，薄膜和纸张的压合时间长，黏结效果好，但生产效率低。覆膜速度快，BOPP薄膜上的黏合剂在加热滚筒上的受热时间短，薄膜和纸张的接触时间短，黏合效果差。国产预涂膜覆膜设备的生产速度一般控制在5—30m/min之间。以上对预涂膜覆膜中的三大关键工艺技术——覆膜温度、覆膜压力和覆膜速度做了简单分析，但三者之间的调节配合应根据所使用设备的不同、覆膜产品种类的不同以及所使用薄膜种类的不同等实际情况，灵活掌握，只有这样才能得到高质量的覆膜产品。
