外文翻譯---水平處理技術創(chuàng)新 英文

1、Circuit WorldAn innovation in horizontal processing Peter Lymn Ken BishopArticle information:To cite this document: Peter Lymn Ken Bishop, (2011),“An innovation in horizontal processing“, Circuit World, Vol. 37 Iss 1 pp.

2、 30 - 37 Permanent link to this document: http://dx.doi.org/10.1108/03056121111101269Downloaded on: 09 March 2015, At: 22:30 (PT) References: this document contains references to 0 other documents. To copy this document:

3、 permissions@emeraldinsight.com The fulltext of this document has been downloaded 803 times since 2011*Users who downloaded this article also downloaded:Neal Wagner, Zbigniew Michalewicz, Sven Schellenberg, Constantin Ch

4、iriac, Arvind Mohais, (2011),“Intelligent techniques for forecasting multiple time series in real-world systems“, International Journal of Intelligent Computing and Cybernetics, Vol. 4 Iss 3 pp. 284-310 http://dx.doi.org

5、/10.1108/17563781111159996Bernd Ponick, (2011),“Miniaturisation of electrical machines“, COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, Vol. 30 Iss 4 pp. 1139

6、-1147 http://dx.doi.org/10.1108/03321641111133082Happy Holden, Charles Pfeil, (2011),“Eight key HDI design principles“, Circuit World, Vol. 37 Iss 3 pp. 16-26 http:// dx.doi.org/10.1108/03056121111155639Access to this do

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12、tact of the chemical with the panel being processed. A dual fluid version of the “Streamline Fluid Engine” that simultaneously feeds gas and liquid to the discharge slots provides this facility, while maintaining the cha

13、racteristics associated with the standard “Fluid Engine”. The design of this engine is shown in Figure 2. The gas is fed under pressure to the outer gas plenum (shown in green) that is separated from the liquid plenum by

14、 a permeable membrane. The base plate has a series of closely spaced holes that normally connect the base plate directly to the liquid plenum across the width. In the dual feed head the liquid plenum has a series of tube

15、s that connect the gas plenum to the base plate. These tubes are pitched such that they line up with every other hole in the base plate and seal the holes from the liquid in the plenum. Therefore, gas and liquid are deli

16、vered side by side across the width of the panel through alternate holes. Figure 2 shows how both gas and chemical reach the output jets. The lower head shows the path that the gas takes to reach the jets and the upper h

17、ead shows how the chemical does. Gas is shown as green and chemical as blue.Fluid knifeWhere it is necessary to remove chemicals from the panel by dilution, or where high fluid impingement is required to wet blind featur

18、es, a shorter version of the fluid engine, known as a fluid knife, is used. Typically, this fluid knife is used for water rinsing after a chemical process or pre-treating prior to a chemical process (Figure 3). The fluid

19、 knife considerably reduces both the conveyor length and the power required to pump solution onto the panel. For example, a single fluid knife provides a solution rate of 40 L per minute using a 110 W pump, compared to a

20、 more conventional spray rinse that delivers 28 L per minute from a 750 W pump. Similarly, the fluid knife requires only 170 mm of conveyor length compared to 240 mm for the spray rinse. As with the fluid engine, thin ma

21、terial transport is assisted by the fluid flow characteristics, although the proportionally lower flow rate avoids the need for the overhead fluid deflection, the upper outflow being deflected to the sides. The liquid th

22、at escapes to each side of the panels is deflected downward using the Coanda effect guides on thebottom knife and a jet deflector on the exit of the upper knife. This negates the need for segmented containment rollers or

23、 extended entry and exit zones (Figure 4).Jet knifeThe jet knife provides multiple upper and lower high impingement conventional spray jets to displace salts, fluxes and other “contaminants” that are not readily dissolve

24、d. The offset opposing jets balance material between the rollers and the ported entry and exit guides ensure contactless entry and exit to the spray zone. Drainage holes in the lower chamber ensure that fluid is disperse

25、d quickly and does not flood over the isolation rollers. The space required is the same as for a fluid knife, but it requires a higher power pump. The jet knife can be seen in Figure 5.Drying with a fluid knifeBased on t

26、he knives originally developed and patented for hot air levelling, these single slot knives are shaped so that aFigure 1 Diagrammatic view of the fluid engine showing the laminar flow and the Coanda effectFigure 2 Dual f

27、luid engine to introduce a gas into the chemical streamFigure 3 Fluid knife showing passage of panel through knife and flow of fluidFigure 4 Fluid knife showing fluid flowing to the side of a panel passing through the kn