- 更多网络例句与表面覆层相关的网络例句 [注:此内容来源于网络,仅供参考]
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The results prove that using the laser power P=1.7Kw, scanning velocity V=4mm/s, spot diameter D=3mm, cladding thickness T=0.6mm, 50%: 50% Ni60:Ni-Cr-Cr_3C_2 as laser cladding process can obtain the laser coating with lubricous tight surface, tiny dilution rate ,fining microstructure and higher micro hardness and fine metallurgical-bonding Interface.
试验结果最终证明,激光熔覆工艺参数对熔覆层的宏观形貌、微观组织及涂层性能有极大的影响,在激光熔覆工艺参数为功率P=7Kw,速度Vs=5mm/S光斑直径D=3mm,厚度T=0.6mm,50%;50%的Ni60;Ni-Cr-Cr_3C_2的条件下,所得到熔覆层表面光滑致密、组织细小均匀、稀释率小、硬度高且与基体实现了良好的冶金结合,证明这种方法是一种在提高热锻模寿命方面有前途的方法。
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The relationship between physico-chemical properties of nano-CaCO〓 and surface treating technology was studied. The results showed the coating model of micron CaCO〓 was not suitable to nano-CaCO〓. The influence of dosage of treatment agent on nano-CaCO〓 dispersion degree in matrix was studied, the results indicated it only need to passivate some active zone on nano-CaCO〓 surface.
研究结果表明,微米粒子的表面包覆活化理论不适宜用来指导纳米粒子的表面处理,在对纳米碳酸钙进行表面处理时,不需要在纳米碳酸钙表面形成完整的包覆层,只需对纳米粒子表面的部分活性点进行钝化即可,即纳米碳酸钙表面有限钝化。
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Tight alloying layer with undulation and without visual pocket and inclusion has been obtained by experiment.The alloying layer is metallurgically combined with the matrix.
试验结果获得了致密、无肉眼可见气孔、夹杂、熔覆表面有一定起伏的合金层,合金层与基体间完全冶金结合;熔覆合金层由单相Fe3 Al构成,覆层组织为粗大的柱状晶团,柱状晶团内包含大量极细小的板条状Fe3 Al晶粒,一些相邻的板条晶之间具有基本相同的晶体学取向。
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Inorganic salts produced in combustion of pyrotechnically generating aerosol fire extinguishing agent are strongly hygroscopic and potentially corrosive to metal surfaces in humid circumstances.
针对固体微粒气溶胶灭火剂对金属材料表面产生腐蚀性的问题,在气溶胶发生装置的释放通路中,通过汽化的十八胺对气溶胶固体颗粒进行原位表面包覆,采用扫描电镜和光电子能谱表征了包覆效果,对包覆前后气溶胶粒子的吸湿性和腐蚀性进行测试,结果表明有机包覆层的存在有效抑制了气溶胶颗粒的吸湿,达到了降低灭火气溶胶对铜片腐蚀性的目的
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The antiablation of silicone rubber liner can be improved both by changing the structure of unvulcanized rubber and adding antiablative fillers,and the bond strength between propellant charge and the liner would be increased largely by coating the primer liquid on the charg...
硅橡胶包覆层中填料的粒径对硅橡胶的补强效果十分重要;可从改变生胶结构、添加耐烧蚀填料两方面来改善硅橡胶包覆层的耐烧蚀性;在推进剂药柱表面上涂覆底涂液可以大幅提高硅橡胶包覆层与推进剂的粘接强度。
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Using high frequency calefaction equipment, MoSi2 ceramic powder and Ni-based self-fluxing powder blended in different proportion were cladded on W6Mo5Cr4V2 steel surface. And Ni-based alloy claddings with different MoSi2 content were obtained. The microstructure of cross-section of the claddings were analyzed; the microhardness and multi-physical parameters of the claddings were measured.
中文摘要:以W6Mo5Cr4V2高速钢为基体,在其表面利用MoSi2陶瓷粉末配制的Ni基自熔性合金粉末进行高频感应加热熔覆,制得不同MoSi2配比的Ni基合金覆层;对覆层横剖面进行微观组织分析和显微硬度测试,并对熔覆层的热物性参数进行测定及分析讨论。
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The iron hydroxide particles prepared above were coated with cobalt by surface adsorption-precipitation reaction. The low pH and Co〓 concentration of suspended system can prevent the nanoparticle from heterocoagulation. The saturation magnetization of MP particles with uniform cobalt hydroxide layer is 10% higher than that of the α-Fe. And a close SiO〓 layer can improve the coercivity by about 92%.
铁黄粒子表面吸附-反应沉积钴过程中较低的pH值和浓度有利于形成均匀的钴氢氧化物包覆层,可避免形成异相凝聚现象,使比饱和磁化强度提高10%;表面包覆二氧化硅形成致密的薄膜,使矫顽力提高92%。
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Basic symbols;Coatings;Definition;Definitions;Dimensions;Drawing specifications;Drawings;Engineering drawings;Finishes;Geometric;Geometrical product specification;GPS;Graphic representation;Graphic symbols;Inscriptions in a drawing;Letterings;Machining;Machining tolerances;Marks;Product specifications;Production processes;Products documentation;Ratings;Reference length;Reference lines;Representation of characters;Roughness;Roughness value;Specification;Statement;Surface properties;Surface roughness;Surface texture;Surface treatment;Surface-roughness measurement;Surfaces;Symbols;Technical drawing;Treatment;Wear-quantity
中文标题产品几何量技术规范。技术产品文件中表面结构的表示方式中文主题词图形表示;参考长度;尺寸;加工公差;表面性质;产品规范;覆层;制图规范;精整;表面粗糙度;粗糙度;表面粗糙度测定;表面结构;磨损量;图纸标题;表面处理;技术制图;几何的;基准线;图形符号;符号;标记;加工工艺;文字书写;产品文件;定义;表面;粗糙度值;工程图;额定值;产品几何量技术规范;GPS;叙述;处理;图纸;机械加工;字符表示;基础符号;规范验收
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The laser cladding technology on the surface of 35 steel with Ni-based self-fluxing alloy is studied. On the base of its microstructure and property of wear resistance, the cladding technology is greatly improved than that of the flame. By the studies of microstructure, mechanical property and corrosion resistance, the cladding layer with different amount of WC particle in Ni matrix is obtained.
试验针对抽油泵柱塞表面进行研究,在35 钢表面激光熔覆镍基自熔合金,通过改变工艺参数,观察并测定熔覆层的组织结构及其腐蚀、磨损性能,并与火焰喷焊工艺进行性能比较,优化工艺参数,研究结果具有实际意义。
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Self-fluxing Fe-Cr-Ni-B-Si alloy prowders are laser clad on medium carbon steel substrate of dimensions 80×35×10mm〓. The investigation results of this clad layer are: micro-defects, micro-cavity and occluded forin substance, are the micro-cracks and crack resourses in clad layer; crack of coating propagates along the boundary of two kinds of eutectic sutructure; The included angle θ between the cracking direction and laser scanning direction in multitrack overlapping clad is smaller than that in one-track clad because of crack propagating along crystalline growth direction and crystalline direction in overlapping zone being different from it in one-track clad.
在调质态的45〓钢表面,采用预置粉末法进行FeCrNiBSi合金的多道搭接激光熔覆,对其熔覆层进行分析表明:多道搭接激光熔覆层裂纹扩展方向与激光扫描方向间的夹角θ与单道熔覆时相比明显变小,前者θ0°,后者θ角基本都为90°,这主要是因为多道搭接时,搭接区结晶方向发生了变化以及裂纹沿结晶方向扩展所致;激光熔覆层裂纹大多是以覆层与基材交界面的孔洞、熔覆层内不同方向共晶团间的显微缩孔、夹杂物的边界等三种显微缺陷作为裂纹源,并沿低熔点物相形成元素偏析造成弱化膜的共晶团界面扩展延伸。
- 更多网络解释与表面覆层相关的网络解释 [注:此内容来源于网络,仅供参考]
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articular surface:关节面
(1)关节面(articular surface)是相邻两骨的接触面. 多为一凸一凹,凸面称关节头,凹 面称关节窝,其表面覆有一层关节软骨,使两关节面的接触更加适合. 由于软骨的表面光滑并有 弹性,因此有减少摩擦和缓冲两骨撞击的作用. 关节软骨内无血管、神经,
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clad:包覆层
另一个改进是在LED的结构内部,在p型包覆层(Clad)的下部设计了使用金属材料的反射层. 由此使得在发光层中发出的光中,进入底板内侧的光会通过反射层的界面反射到LED的表面. 反射层的反射率为70%. 关于使用金属材料设计反射层的结构,
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cladding:覆层
只有低热膨胀系数的石材才适合用作表面覆层(cladding)材料,因为它常常要暴露在短时间内就发生巨大温差变化的场所,而高热膨胀系数的石材会有较高的热裂解(thermal cracking)概率,容易发生破裂碎解现象.
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ganoid scale:硬鳞
硬鳞(ganoid scale)为硬骨鱼类(鲟鱼、多鳍鱼等)所特有. 是由真皮形成的骨质板,表面覆有一层坚硬的闪光质,鳞多呈菱形,成对角线排列. 圆鳞(cycloid scale)是一种骨质鳞,由真皮演变而来. 鳞片略呈圆形,前端斜插入真皮内,后端游离,
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restricting graphitization:限制石墨化
restricting 限燃层,扼流,表面覆层 | restricting graphitization 限制石墨化 | restricting signal 限制信号,速度限制信号
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restricting:限燃层
restricting 扼流 | restricting 限燃层 | restricting 表面覆层
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restricting:表面覆层
restricting 限燃层 | restricting 表面覆层 | restrictionism 限制主义
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vermicular:蠕虫状的,蠕动的,有弯曲线条的
vermeil 镀金银:用电镀或机械方法在纹银表面覆一薄层金 | vermicular 蠕虫状的,蠕动的,有弯曲线条的 | vermilion opal 欧泊中的辰砂,蛋白石中的辰砂
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acute phlegmonous appendicitis:急性蜂窝织炎性阑尾炎
(2)急性蜂窝织炎性阑尾炎(acute phlegmonous appendicitis)或称急性化脓性阑尾炎,常由单纯性阑尾炎发展而来. 肉眼观,阑尾显著肿胀,浆膜高度充血,表面覆以纤维素性渗出物. 镜下,可见炎性病变呈扇面形由表浅层向深层扩延,直达肌层及浆膜层(图10-21).
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metalizing:金屬化
4.金属化(Metalizing):系用化学方法形成金属覆层(metallic coating)通常是银镀层. 将硝酸银溶液及还原剂溶液如福马林(Formaldehyde)或联铵 (Hydrazine)分别同时喷射在物件上得到银的表面.