Ar/O_2比和基片温度对射频反应磁控溅射法制备钢基SiO_2薄膜亲水性的影响

在工作气压为1.9 Pa的氩氧气混合气氛中,改变氩氧的流量比和基片温度,采用射频反应磁控溅射法在不锈钢基片上制备了二氧化硅薄膜试样,并对薄膜的微观表面形貌和薄膜的亲水性进行表征.结果表明,在氩氧分压比为64和基片温度为90℃时制备的SiO2薄膜亲水性能最佳.     

不锈钢电化学着色膜显色机理

通过试验得到最佳工艺参数,用电化学的方法对不锈钢进行着色,随着着色时间的增加,出现一系列不同颜色的着色膜．对着色膜的显色机理进行初步的理论研究,得出着色膜显示的颜色与着色膜厚度和折射率有关．     

Behaviour of cold-formed stainless steel beams at elevated temperatures

A study of the behaviour of constructional cold-formed stainless steel beams at elevated temperatures was conducted in this paper. An accurate finite element model （FEM） for stainless steel beams was developed using the finite element program ABAQUS. Stainless steel beams having different cross-sections were simulated in this study. The nonlinear FEM was verified against the experimental results. Generally, the developed FEM could accurately simulate the stainless steel beams. Based on the high temperature stainless steel material test results, a parametric study was carried out on stainless steel beams at elevated temperatures using the verified FEM. Both high strength stainless steel EN 1.4462 and normal strength stainless steel EN 1.4301 were considered. A total of 42 stainless steel beams were simulated in the parametric study. The effect of temperatures on the behaviour of stainless steel beams was investigated. In addition, a limiting temperature for stainless steel beams was also proposed.     

不锈钢光纤束管涡流检测参数的设计

不锈钢光纤束管的焊接质量影响光缆的使用性能,利用涡流擦伤法检测不锈钢光纤束管焊接质量,可以有效的检测、监控不锈钢光纤束管;介绍了涡流法在线检测不锈钢光纤束管时几个重要参数的确定以及确定这些参数所采用的一般方法。     

双相不锈钢容器的焊接工艺分析

双相不锈钢容器焊接的主要问题不在焊缝,而在热影响区.因为在焊接热循环作用下,热影响区处于快冷非平衡态,冷却后总是保留更多的铁素体,从而增大了腐蚀倾向和氢致裂纹（脆化）的敏感性.本文分析了双相不锈钢容器的焊接特点和焊接时常出现的问题,提出了焊接双相不锈钢容器的方法及工艺.     

L_(316)氮化钛不锈钢复合体胫骨内种植的动物实验研究

用真空离子镀技术在L316医用不锈钢表面镀上一层氨化钛薄膜,制成氮化钛-不锈钢复合体,并以纯钛及医用L316不锈钢作对照,植入60只小白鼠的胫骨内．经扫描电镜等观察结果表明：氮化钛-不锈钢复合体及纯钛材料与骨之间都形成骨整合及纤维整合界面,但是,氮化钛-不锈钢复合体比纯钛材料骨性结合界面形成早,成骨活跃     

Ultimate strength of single shear bolted connections with cold-formed ferritic stainless steel

This paper is focused on the structural behavior of the single shear bolted connections with thin-walled ferritic stainless steel.The purpose of this study is to investigate the ultimate behaviors,such as ultimate strength and fracture mode of the single shear bolted connections of thin-walled ferritic stainless steel(low cost steel) rather than austenitic stainless steel(high cost steel).Bolt arrangement and end distance parallel to the direction of applied load are considered as main variables of the test specimens for bolted connections.Specimens have a constant dimension of edge distance perpendicular to the loading direction,bolt diameter,pitch,and gauge.A monotonic tensile test for specimens has been carried out and some bolted connections with long end distance showed curling(out of plane deformation) occurrence which led to strength reduction.The ultimate behaviors such as fracture mode,ultimate strength are compared with those predicted by current design codes.Further,conditions of curling occurrence and the strength reduction due to curling are investigated and modified strength equations are suggested considering the curling effect.     

含氮节镍型QN2109Mo奥氏体不锈钢组织和性能

选择含氮节镍型QN2109Mo奥氏体不锈钢作为研究对象,采用XRD、TEM、SEM、EDS、摩擦磨损试验机和电化学工作站等检测手段,研究QN2109Mo不锈钢的组织结构、摩擦磨损性能以及耐腐蚀性能,并与316L不锈钢进行对比。实验结果表明:N原子主要以间隙固溶形式存在于QN2109Mo不锈钢中,对QN2109Mo不锈钢组织起到了细化作用,提高了QN2109Mo 不锈钢的硬度。在干摩擦状态下,QN2109Mo不锈钢的耐磨损性能优于316L不锈钢,其磨损机理为氧化磨损和磨粒磨损共同作用。在w(NaCl)为3.5%的溶液中,QN2109Mo不锈钢表现出比316L不锈钢更低的自腐蚀电流密度和更高的点蚀电位,具有更优异的耐NaCl 溶液腐蚀性能。     

电解加工耐酸泵转子及计算机控制与补偿技术

随着现代工业的发展，新材料、难加工材料的出现，一种不依靠机械能、切制力进行加工的特种加工技术得到了广泛应用和发展，使得这一技术在机械制造业中成为广大工程技术人员普遍关注的课题．本文就是在研究用于抗盐酸泵转子的难加工材料００Ｎｉ６５Ｍｏ２８（俗称：ＨＡＳＰＥＬＬＯＹ ＢＮ－１２Ｍ）生产加工的基础上，采用了电解加工方法和计算机控制与补偿技术，成功地进行了不锈钢材料转子空间曲面型线的加工，并在文中概述了这项技术的主要内容及实现途径．     

Modeling of polishing process for electric stainless-steel kettle

The market of stainless electric steel kettles is growing significantly, but the main mechanism for polishing kettles via traditional handwork operations limits the growth of electric kettle manufacturing. Based on the successful multi-tool automatic polishing system for electric stainless steel kettles, regression analysis and orthogonal tests were employed to construct a polishing process model, with a purpose to improve the automatic polishing technology for electric stainless steel kettles. The model reveals the relationship between the surface roughness and processing parameters including gringding depth, abrasive tangent speed, workpiece rotating speed and axial feeding speed. Simulation and experimental results are in agreement,which shows that this modeling method is feasible in practice, and it can also be used as a guidance for planning automatic polishing process of electric stainless-steel kettles.     

316L不锈钢镀银板的真空热处理工艺

本文分别通过探讨真空环境下热处理温度和热处理时间对316L不锈钢镀银板性能的影响,从而确定316L不锈钢镀银板的最佳真空热处理工艺。     

特种化学品船奥氏体不锈钢焊接技术研究

特种化学品船建造质量中有许多难点和瓶颈,其中奥氏体不锈钢焊接及质量控制是特种化学品船建造及提高产品质量的关键问题,文章分析了特种化学品船不锈钢管焊接中出现的问题,阐述了研究内容、施工关键技术、技术突破点,提出了解决这些问题的工艺措施和关键技术。     

二维反应器采用活性碳纤维毡片复合阳极电解TNT废水研究

本实验研究了以不锈钢片单独做阳极和以活性碳纤维毡片（＋不锈钢）的复合阳极对TNT废水电解效果的影响,并对电解机理进行了初步的探讨。原废水的TNT浓度为70—90mg／L,COD约为290—340mg／L,PH为7．5—9。实验数据显示,当槽电压为10V,PH值为3,外加电解质Na2SO4lg／L,极板间距为4era,电流密度为15mA／em。,搅拌转速为260r／min,电解2h时,以活性碳纤维＋不锈钢复合材料为阳极处理原废水,对TNT和COD的降解率分别为66．6％和55．5％,然而单独以不锈钢材料为阳极情况下,对TNT和COD的降解率仅为43．5％和24．7％。结果表明以活性碳纤维＋不锈钢复合材料为阳极对TNT废水中的有机物的电解效果显著,对实际工程废水处理有一定的指导意义。     

石油化工装置不锈钢复合钢板的焊接工艺

不锈钢复合钢板是一种由基层和复层组成的双层金属钢板,在石油化工装置中使用十分广泛。针对不锈钢复合钢板的焊接性特点,从坡口的选择、焊接方法、焊接材料、错变量的控制、焊后热处理和无损检测等工艺因素入手,阐述和提出了适合不锈钢复合钢板在石油化工设备制造生产中的焊接工艺措施。实践证明,这些工艺方法与措施在实际生产中可借鉴使用,并具有良好的针对性和实用效果。     

简析不锈钢的切削加工

阐述了不锈钢的加工特点,并从化学和物理的角度对其难切削加工的特性进行了分析,对切削不锈钢所使用的刀具材料、刀具几何参数的确定进行了说明,对切削用量的选择进行了具体的描述,并对切削液的使用提出了建设性的看法。     

西门子S7～20OPLC在焊缝滚压设备中的应用

针对内、外焊缝余高过大导致焊缝处应力集中,抵抗动载荷能力下降等影响焊管力学性能的问题,在充分分析焊缝滚压冷轧处理工作流程的基础上,以西门子S7—200PLC为系统核心,EasyView触摸屏为人机界面,提出能够自行调节滚压行程、滚压速度、回程速度、加减速和比例阀控制死区等设置的一整套电气控制方案,完成对小口径不锈钢焊管的内、外焊缝的滚压冷轧处理,解决了以往设备需要依赖进口或调试困难、故障率高、维修难的问题,提高了产品成材率和品质,满足了生产大型电站、锅炉换热器用小口径不锈钢焊接管的生产工艺要求。     

不锈钢电化学着色膜耐蚀性初探

用电化学的方法对不锈钢进行着色,并对着色后的试片采用2种后处理方式,一种是用硬脂酸进行封闭,一种是阴极电解方法,将封闭后的试片进行耐蚀性试验,并通过扫描电镜（SEM）和能谱进一步分析着色膜腐蚀的原因．     

Effect of deposition parameters on mechanical properties of TiN films coated on 2A12 aluminum alloys by arc ion plating (AIP)

1 Introduction Weight saving materials such as aluminum and its alloys are becoming increasingly important and have been attracting increasing attention over the past decade, specially in the automotive, aerospace and chemical industries, and electrical devices because of their high strength-to-weight ratio, high electrical and thermal conductivities, processability and recyclability and good resistance to degradation in some corrosive environments [1,2]. In the automotive industry, there is d…     

不锈钢的化学合成及其耐蚀性能研究

利用金属氧化物与金属的还原反应制备了新型不锈钢 ,并研究了这种不锈钢在不同腐蚀介质中的耐蚀性能 .结果表明 ,采用这种特殊工艺制备的不锈钢具有比成分类似的变形不锈钢更优异的性能     

翅化技术提高共轭环填料传质性能的试验研究

详细分析了在薄不锈钢板（带）材表面生成翅结构的机理和方法。并以试验证明：改善填料表面特征,利用填料表面的翅结构改善气流流场特性和填料表面润湿性能。提高填料性能是切实可行的。