Review of heat transfer enhancement for dimpled surface;
凹坑强化传热的研究进展回顾
The application shows that the optimization can greatly reduce the dimple magnitude and improve the punching quality.
实践证明:优化后的凸模在很大程度上减小了凹坑的塌陷量,提高了产品质量。
Limit load analysis on spherical head with pit located in the structural discontinuity area;
球形封头上结构不连续处凹坑极限载荷分析
Cause Analysis and Prevention of Pit Defect on Drum after Plate Winding;
钢板卷筒后筒体表面凹坑缺陷的成因分析与预防
Safety Assessment for Featheredged Sleeve Press-Ure Vessel Containing Pit Defects and Research for Fatigue Life of Numerical Simulation;
含凹坑缺陷薄壁圆筒形压力容器的安全评定以及疲劳寿命的数值模拟研究
40 of "pressure vessels periodical inspection regulation",the stress distribution of local thinned area in the boundary stress region of nozzle-cylinder is calculated and the trends of stresses influenced by the dimension and location of part-through slot are obtained.
参考《压力容器定期检验规则》第40条,采用有限元方法计算了筒体接管边缘应力区局部减薄处的应力分布,得到了局部减薄处凹坑的尺寸与位置对应力的影响趋势,讨论了应力集中系数随尺寸变化的规律,为筒体接管边缘应力区局部减薄处的强度评定提供了一定的计算依据。
Wet etching pits of Pyrex glass for metallization;
Pyrex玻璃金属化凹坑的湿法腐蚀
The characteristics and phenomenon of pits and cracks on cast iron caused by little fusion laser quenching with SiO 2 coating are discussed in this paper The influence of physical and chemical properties of coatings such as acidity,basicity,oxidation,melting point and viscosity etc.
讨论了二氧化硅涂料铸铁微熔激光淬火的特点及硬化层表面出现凹坑和裂纹的现象。
The ion bombardment results in a production of micro-defects(pits)on Si substrate surface and therefore the contact area of diamond film with Si surface is.
本文分析衬底负偏压引起的离子轰击对Si表面产生的影响之后 ,基于离子轰击使得Si衬底表面产生了微缺陷 (凹坑 )增大了金刚石膜与Si衬底结合的面积 ,理论研究了离子轰击对金刚石膜与Si衬底结合力的影响。
Tested crank journals with concave nonsmoothed topography of 45# steel were manufactured with laser.
用激光方法加工了曲轴颈仿生非光滑凹坑表面,采用均匀试验研究了速度、负荷、时间和凹坑圆周方向的距离等因素对曲轴耐磨性的影响,得出影响激光处理仿生非光滑曲轴颈凹坑表面耐磨性的多因素回归方程。
It was found that the wear rate of the samples with the concave non-smooth surface is less than those with the smooth surface under the other same experimental conditions,i.
采用试验优化设计方法对相同试验条件下凹坑形仿生光滑试样以及具有仿生耦合表面的非光滑试样进行了干摩擦磨损试验对比研究。