超聲波清洗外文翻譯-其他專業(yè)-資料下載頁
2025-01-19 01:49本頁面
【導(dǎo)讀】光后表面殘留的碎屑，去除工件表面殘留的油污，甚至可以去除油漆層。程，光學(xué)，冶金，醫(yī)療儀器設(shè)備等諸多領(lǐng)域。進(jìn)一步了解超聲波的原理?？张菹騼?nèi)爆裂，撞擊到工件的表面，將工件表面的附著物剝離，分散開來。超聲波清洗常用頻率在20千赫到50千赫之間，常用清洗溫度在50-80℃之間。的清洗液而產(chǎn)生。波時(shí)，清洗液中的分子被緊密的壓縮在一起，相反，在擴(kuò)張波時(shí)，分子被快速的拉開了。擴(kuò)張是那么戲劇性，以至于分子被裂開了，形成了精微的氣泡。氣泡周圍的壓力變大時(shí)，周圍的液體就涌過來，并使氣泡爆裂。液體的噴射，導(dǎo)致溫度高達(dá)9032華氏度。體噴射的速度，產(chǎn)生了一個(gè)非常強(qiáng)烈的清洗作用。是兩個(gè)緊密相關(guān)的因素。60℃，一些PH較高的溶液需要更高的清洗溫度。一些防銹劑，不適合用于超聲波清洗作業(yè)中。大多數(shù)超聲波清洗設(shè)備都被設(shè)計(jì)為專門用途。必須充分考慮工件清洗時(shí)候的載入方式，一些較大的工件，某一項(xiàng)可能會(huì)造成不必要的麻煩。
【正文】 to ensure cleaning uniformity. Some parts require individual fixturing to separate the part for cleaning or subsequent processes. Some parts require slow rotating or vertical motion during the cleaning to ensure critical cleanliness. Ultrasonic Output FrequencyThe majority of the ultrasonic cleaning that is done in industrial applications today uses 40 kHz as a base frequency. Lower frequencies, such as 2025 kHz, are used for large masses of metal where ultrasonic erosion is of little consequence. The large mass dampens or absorbs a great amount of the ultrasonic cleaning power. WattsPer GallonIn general, smaller parts require higher watts per gallon to achieve the desired level of cleanliness. Most industrial ultrasonic cleaning systems use watt density from 50 to 100 watts per gallon. However, tanks over 50 gallons usually require only about 20 watts per gallon because ultrasonic processes traditionally have shown diminishing returns in large tanks sizes. LoadingLoading of the parts to be cleaned must be considered when developing an ultrasonic cleaning process. A large dense mass, for example, prevents internal surfaces from being thoroughly cleaned (., metal castings). A rule of thumb is that the load by weight should be less than the weight of half the water volume. So, for example, in five gallons (approximately 40 lbs .) of water, the maximum workload should be less than 20 lbs . In some cases, it is better to ultrasonically clean two smaller loads rather than one larger load. Each of the factors outlined here must be considered when specifying an ultrasonic application to ensure a high level of cleaning success. Neglecting any single factor can have a negative impact on the overall cleaning process.
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