http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : ( Wu Liyin ) (검색결과 2 건)
- 무료
- 기관 내 무료
- 유료
-
Experimental Study on the Influence Factors of the Spray Cone Angle of Swirl Injectors
( Wu Liyin ),( Qing Lian Li ),( Juan Liu ) 한국액체미립화학회 2010 한국액체미립화학회 학술강연회 논문집 Vol.2010 No.-
Spray cone angle is one of the most important parameters on spray distribution. The experiments are just for analyzing the parameters which influence the spray angle. The injectors here are used widely in a gas-generator. Based on former researches, the cone angle characteristics of several gas/liquid coaxil swirl injectors with different structure parameters were studied by conducting experiments with water as the simulation medium in this paper. The results suggest that the structure parameters, including the size of Liquid Hole and the swirl-chamber, are the determinant factors on cone angle. A great length and diameter of Liquid Hole and a shorter swirl-chamber is more conducive to the expanding of spray cone angle. By contraries, the influence of the injection pressure drop is obviously unconspicuous.
-
Zhiqiang Xu,Jun Wang,ShaoHui Yin,Heng Wu,Liyin Yi 한국정밀공학회 2021 International Journal of Precision Engineering and Vol.22 No.9
With the increase in demand for various types of small-aperture aspherical optical parts, the machining of a small tungsten carbide alloy mould with high accuracy is not only required, but essential. Ultra-precision grinding is generally used to process the small tungsten alloy aspheric mould, but there are some grinding marks and surface defects left by grinding. Aimed at the problems above, this paper introduce a new compound processing technology which integrates ultra-precision grinding and oblique-axis magnetorheological polishing technology on the same machine tool. First, we developed the machining equipment of oblique-axis ultra-precision grinding and magnetorheological polishing, and then, we analyzed the surface accuracy, surface roughness, microstructure and subsurface damage of tungsten alloy aspheric mould after grinding and polishing. The experimental results indicated that the surface accuracy of workpiece was improved to smaller than 200 nm in PV value, surface roughness Ra was reduced to about 1 nm after using the compound processing technology.
연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
