pinhole imaging

Study of MTF Measurement Technique Based on Pinhole Image Analysis;

基于针孔像分析的光学传递函数测试技术研究

Analysis of pinhole defect formation mechanism in aluminium foil;

一种铝箔针孔形成机理的探讨

Effect of particle dimension in aluminium foil rolling oil on pinhole formation;

铝箔轧制油中粒子尺寸对针孔形成的影响

Reasons for forming pinholes and cracks in ion-exchange membrane and their effects as well as patching-up skills;

离子膜出现针孔和撕裂的原因、影响及其修补技术

The mechanism research of pin hole formation has been performed by applying surface appearance and element quantita-tive analysis method.

采用SEM表面形貌和元素定量分析方法对铝箔针孔形成机理进行了研究,提出了“非金属夹渣在轧制过程中的脆性断裂可导致铝箔形成短程线性针孔”,以及“铸轧带材表面缺陷也可形成分散性针孔”的机理;将这一机理应用到软管用铝合金箔材(简称软管箔)的生产实践中,在减少针孔方面取得了重大突破。

0065 mm aluminium foil's performance, pin hole and surface quality are studied.

0065mm铝箔的性能、针孔度、表面质量。

Elimination of Pin-hole Defect in Cylinder Head Based on Quality Control(QC) Management;

运用QC管理方法解决缸盖大面针孔难题

As for the film on the large area glass and PMMA by vacuum magnetic sputtering,the pin-holes and the adherence are an interesting problem.

而在玻璃、亚克力等透明基片上用磁控溅射方法大面积沉积的膜层,针孔和结合力是一个令人关注的问题。

The results show that,compared with common casting technology,the crystal grain,pinhole degree and Si segregation of alloy made by electromagnetic stirring + Hot pot billet casting technology were all improved obviously.

研究结果表明,与常规铸造相比,电磁或人工搅拌+水冷热顶铸造工艺制备的材料晶粒得到了较大的细化,针孔度和Si偏析都有显著的改善,针孔度由常规铸造的2~3级提高到1级,而Si偏析由常规铸造的0。