耐磨

The results show that the brush-plating coating is even and compact from section plane with good toughness and adhesion. The microhardness of the coating is 230.6HV0.5 which is 3 times of cast aluminium substrate. The wear resistance of the coating is 3 times of cast aluminium substrate. But the friction coefficient of the coating is 0.70 which is more high than that of the substrate, which is favorable for the fixed conjugate between the axis sheath and the axis seat of the gear-box.

结果表明，镀层厚度分布均匀、致密，镀层与基体界面清晰，未出现氧化物夹层，镀层的韧性和结合强度均较好；测得碱性铜及铸铝基体的显微硬度分别为230.6、74.2HV0.5；碱性铜的镀制使基体表面显微硬度及耐磨性均提高了2倍多，磨损状况明显改善。

But the working condition of the screw pump is so rigorous that the ordinary rubber could not fulfill the requirement of the terrible working condition such as high temperature,high pressure,long working hours,corrodent,seasonal stress and so on.

但采油螺杆泵工作条件十分苛刻，如高温、高压、工作时间长、磨蚀性介质、周期性挤压力等等，传统的定子橡胶已临近其性能极限。本文主要讨论纳米CaCO3和PVC树脂对丁腈橡胶的改性效果，综合提高丁腈橡胶的强度、耐油、耐磨等性能，通过改性使得丁腈橡胶能够满足采油螺杆泵定子材料的性能要求。

Spreads after the multi-channel working procedure processing cowhide smooth soft surface has both wear-resisting and the waterproof coating.

经过多道工序加工的牛皮光滑柔软表面涂有既耐磨又防水的涂料。

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。

Design Features: The unique design of the piston components: the cylindrical surface of the piston with a special treatment, so to achieve a high degree of hardness and wear resistance.

设计特点：活塞组件的独特设计：活塞的圆柱表面采用了特殊处理，故此达到很高的硬度及耐磨度。

In addition, there is delamination removal at weak interface due to decarburization.

普通涂层的磨损机制为微切削；纳米涂层在轻载(10 N)下，以塑性变形为主要磨损机制，随载荷增加至30 N，纳米WC粒子不能起到阻抗陶瓷球对磨副的磨削作用，而是随粘结相一起被去除，同时由于纳米涂层脱碳导致的层间结合薄弱，在滑动磨损中易发生成片剥落，耐磨性大幅下降。

The distributing of SiC in the composite material and the decomposer of SiC and interface between steel and SiC are analyzed too.

分析了SiC颗粒在基体中的分布状况、SiC颗粒在高温钢液和热处理过程中的分解以及其与基体的界面结合状况；同时还对制得的复合材料进行力学性能如显微硬度、硬度、耐磨性作了与基体金属的对比实验并分析了SiC颗粒的加入对于提高复合材料的性能的影响。

Detail :-Made of heavy duty, abrasion and water resistance 1000 denier Invista Cordura nylon fabric.

详细说明：-本产品采用了Invista公司1000Dx1000D的64支顶级Cordura材料制造，耐磨性能出众。

Cemented carbides product: Cemented carbides saw, blade, tool, drill bit, mould, Spray nozzle, seal, muzzle, hammer, Roller, rock drill, Semi-finished materials, Indexing blade, stick materials, long thin slice, plate, denticle piece, Impact drill, Ball, wooden blade, Ramming Mould, Valve, Boat pan and other products.

硬质合金制品：硬质合金圆锯片、刀具、工具、钻头、模具、喷嘴、密封件、顶锤、轧辊、钎具、坯料、可转位刀片、棒材、长条薄片、板材、锯齿片、冲击钻片、球、木工刀头、拉拔冲压模体、阀门、舟皿、非标准耐腐耐磨结构件及各种非标硬质合金制品、其它深加工产品

The result indicated that modified PVA resin had decisive effect on developability, ink receptivity and scratch resistance and also had strong influence on shelf life and photosensitivity.

结果表明酸酐改性PVA树脂对阴图PS版的显影性能，亲油墨性和耐磨性都起关键作用，对阴图PS版的感度和保存稳定性也有一定影响。

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。