耐磨度

They have high precision, good smoothness, wear-resistant, erode-resistant, and well-writing properties for all kind of pens with stainless steel, cupronickel and livid brass pen-pins.

具有精度高、光洁度高、孔隙度均匀、耐磨性能好、耐腐蚀、书写流畅等特点。技术指标达到国际领先水平。适合水性、油性及中性等各类笔使用，能够与不锈钢、镍白铜、铅黄铜等笔头配合使用。

In addition, when the modified PVA resins fulfilled requirements in the following: 1 the acetalization degree varied from 60 mol% to 80 mol%, 2 the esterification degree varied from 10 mol% to 20 mol%, 3 the amount of hydroxyl group was 5-25 mol%, 4 the range of value of B/P(the mass ratio of the binder to diazo resin) was from 4 to 4.5,5 the range of its molecular weight was from 4×10^5 to 8×10^5, the negative PS plate obtained had excellent sensitivity, hydrophobic property, good developability, good ink receptivity and good scratch resistance.

因此其分子量、酯化度和缩醛度的确定，必须综合考虑各项性能之间的平衡。缩醛度为60-80 mol%，酯化度10-15mol%，羟基5-25 mol%，分子量约为4-8万，B/P为4-4.5时，制得的阴图PS版的感度、显影性、着墨性和耐磨性都较好。

Increasing quenching temperature can improve the impact toughness and wear property, and the optimal impact toughness (40 J/cm^2) and wear performance of the tested steel can be obtaind by quenching at 1100℃ and tempering at 250℃ SEM analysis finds that the main wear mechanism is cutting wear and fillister under the low stress grinding abrasion.

提高淬火温度有利于冲击韧度和耐磨性的提高，经1100℃淬火＋250℃回火热处理，材料可获得最佳的冲击韧度(40J/平方公分)及耐磨性。用SEM分析发现，在该低应力磨料磨损工况下，实验钢的磨损形式主要有显微切削和凿坑。

The improvement of the frictional resistance is mainly due to the effect of carbon on residual austenite and the morphology of carbides, and an appropriate amount of residual austenite is helpful to improve the impact toughness and hardness of matrix; The spherical VC can hinder the initiation and propagation of crack and improve the frictional resistance.

碳含量对耐磨性的影响主要是通过对基体残余奥氏体量和碳化物形态表现出来的，适量的残余奥氏体使基体具有较好的冲击韧度及硬度；形态较为固整的VC颗粒，对裂纹的萌生及扩展起阻碍作用，从而使材料的耐磨性提高。

Three kinds of cutting material were selected to machine stainless steel machining experiment such as ceramic cutting tools, cermets cutting tools and coated carbide cutting tools, in which the best range of each kind of tool material was founded. For example, LT55 was suitable to be machine lCrl8Ni9Ti as the cutting speed surpasses 120m/min and have a good wearable property.(3) Surface roughness was measured under different cutting conditions. Feed rate played the most important role in impacting surface roughness, and then cutting speed.(4) Chip patterns in different cutting speed with various cutting materials were analyzed. With the increase of turning speed, chip became shorter and was easy to be broken. For instance, serration chip appeared in high sped turning stainless steel with LT55;(5) Work hardening of austenitic stainless steel was analyzed.

陶瓷刀具LT55适合在Vc=120m/min以上切削加工不锈钢，耐磨性好；③通过试验研究了不同刀具材料高速车削加工1Cr18Ni9Ti不锈钢时的表面粗糙度，其中进给量对表面粗糙度的影响最为显著，其次为切削速度；④分析了不同刀具材料在不同切削速度下加工1Cr18Ni9Ti不锈钢的切屑形态，随着车削速度的提高，切屑变短且易断屑，其中LT55陶瓷刀具切削加工时产生了锯齿状切屑；⑤分析了奥氏体不锈钢的加工硬化机理及其对刀具磨损的影响；⑥根据试验结果分析在不同切削条件下切削不锈钢的刀具磨损形式及其磨损机理。

For the complex road situation,Shanghai Municipal Engineering Institute linked the actual cases of tunnel,the common road surface concrete construction process was changed,to make road surface concrete leverl degree,rough degree and strength as well as wearproof all reached to the requirements of emergency repair,and finished 2,800m2 road surface repair work.

针对复杂路况，上海市市政工程研究所结合隧道的实际情况，改变一般路面混凝土的施工工艺，使路面混凝土的平整度、精糙度、强度及耐磨性均达到了应急抢修的要求，完成了2800平方米的路面抢修任务。

The result indicated that, gathers in advance the emulsion water resistance and mechanics performance which in the body preparation method the one-stage process obtains is good, but two steps obtain the emulsion stability is good; The neutralizaing agent triethylamine amount used should enable to achieve neutral between x-y, to gathers in advance the body disperser and the emulsion stability only then is advantageous; The water affinity chain extendor DMPA content to the emulsion viscosity, stable and the emulsion cellophane water resistance has the remarkable influence, its amount used general control between x-y; Hard section isocyanogen diethylene glycol dinitrate primary control paint film degree of hardness, module, anti-avulsion, wear-resisting and so on performance, the soft section low-molecular polymer polyols primary control paint film elasticity, hydrolisis performance and so on bears the low temperature and bears

结果表明，预聚体制备方法中一步法得到的乳液的耐水性和力学性能较好，而两步法得到的乳液的稳定性好；中和剂三乙胺的用量应使中和度达到x-y之间，对预聚体的分散和乳液的稳定性才有利；亲水扩链剂DMPA的含量对乳液的粘度、稳定性及乳液胶膜的耐水性有着显著的影响，其用量一般控制在x-y之间；硬段异氰酸酯主要控制涂膜的硬度、模量、抗撕裂、耐磨等性能，软段低聚物多元醇主要控制涂膜的弹性、耐低温和耐水解等性能

It is working great with respect to water-proofing, scratch-proofing, color-retaining, high transparency, low oxidability, corrosion resistance and so on.

在防水抗划、色牢度、透明度、氧化度、粘合度、色彩还原度和耐磨力等方面均表现出色，使每一幅经制作后的画面古朴而典雅、妍丽而不张扬，与黄金的相融又熠熠生辉，具有很高的观赏和收藏价值。

The paper summrized lubrication technology and the selection of lubricant for rotary kiln, grate cooler, mill, conveyor mechanical equipment and large scale fan as following,(1)in rotary kiln, apply oil spoon of circulatory lubrication or pump forced oil supply system in the roller supporting mechanism and use (superscript #)680 high load industrial gear oil, and use lubrication method of idle oil wheel or spray in drive gear wheel and select solid lubricant which has high viscosity, strong adsorbability, good abrasion resistance in utmost pressure and lattic crystal structure,(2) in grate cooler, use immersion oil lubrcation in reducer and boiled oil centralized lubrication method in supporting roller and guide roller bearing, choose (superscript #)1 limit pressure lithium lubrcant grease,(3) in mill, use circulatory lubrication with fluxing oil station in drive mechanism and circulatory lubrication with high-low pressure fluxing oil station in main bearing and sliding shoe bearing and select N320 industrial gear oil.

文章全面总结了回转窑、篦冷机、磨机、输送机械及大型风机的润滑技术和润滑剂的选择。其中，(1)回转窑的托轮支承装置一般采用油勺供油的连续循环润滑方式或油泵强制供油系统，润滑油选用680重负荷工业齿轮油；传动大小齿轮的润滑一般采用带油轮或喷雾的润滑方式，润滑剂宜选用粘度高、吸附性强、极压耐磨性好、具有点阵晶体结构的固体润滑剂；(2)篦冷机中传动减速机的润滑一般采用浸油飞溅润滑；托轮，挡轮轴承的润滑一般采用干油集中润滑的方式，润滑脂一般选用锥入度310~340的1极压锂基润滑脂；(3)磨机中传动装置一般采用稀油润滑站循环润滑和冷却的方式；主轴承或滑履轴承的润滑一般采用高低压稀油润滑站循环润滑和冷却的方式，润滑油一般选用N320工业齿轮油。

XD-2003 strap machine is changed from XD-2002 machine which has a cast aluminium on the bed,making the screw,screwtube and speed reducer keeping concentric.the V-model manger on the bed is lower than the flat on which the speed reducer is fixed,the components are finished machining by machine tool.guaranteeing perpendicularity, degree of balance.speed reducer,screw and screwtube is fixed on the base,and the screwtube is in the mini-manger,then ensuring axis keeping concentric with sheath,screwtube feed opening has a chromium hard-wearing sheath,which can improve the lifetime of the screw and screwtube to threefold or to fourfold.

XD-2003 型塑料打包带机组，是在XD-2002型机组的机座上安装了一个铸铁机座，使螺杆，螺筒和减速机保持同心，座上的V型槽比安装减速机的平面低，其部件都是经过机床精加工完成的，保证了垂直度和平衡度。减速机和螺杆、螺筒置于底座上，且螺筒卡在微型槽内。确保轴与套保持同心，螺筒下料口处设有高铬耐磨衬套，这样可使螺杆、螺筒的寿命提高3-4倍。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。