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超声技术的发展是从第二次世界大战后开始的,功率超声(首先是超声清洗和去污)是五十年代后寸发展起来的,以后逐渐应用于其它方面,如超声焊接、处理、加工……等等.所谓超声,其下限频率是不严格的,国内一般是从16千赫开始,至于上限则随技术的发展而不断提高,现在已能产生核赫级的超声波了.不过超声清洗及其在液体中的处理,一般不超过50千赫,其功率密度通常在每平方厘米零点几瓦到几十瓦之间. 近几年来国内科学技术的发展,特别是电子技术的进展,推动了超声技术的发展和应用,使超声清洗在工业、农业、医疗卫生、国防及科研等各个领域得到广泛采用,并逐渐向纵的方面发展,如超声乳化、分散、凝聚、破坏边界、除气脱泡、灭菌消毒等.由于涉及的面很广,而了解掌握的情况不多,故仅就近年来国内的情况,作一简单介绍.
The development of ultrasound technology started after the Second World War. Power ultrasound (ultrasonic cleaning and decontamination in the first place) was developed in the late 1950’s and later applied to other areas such as ultrasonic welding, processing and processing ... etc .. The so-called ultrasound, the lower limit frequency is not strict, the domestic generally starts from 16 kHz, as the upper limit with the development of technology continues to improve, and now has been able to produce nuclear He-level ultrasound, but ultrasonic cleaning And its handling in liquids, typically not exceeding 50 kHz, with power densities typically ranging from a few tenths to a few tens of watts per square centimeter. The development of domestic science and technology in recent years, particularly advances in electronic technology, has prompted The development and application of ultrasonic technology have made ultrasonic cleaning widely used in various fields such as industry, agriculture, health care, national defense and scientific research, and gradually developed to the longitudinal aspect such as phacoemulsification, dispersion, agglomeration, damage to the boundary and degassing Defoaming, sterilization and disinfection etc. Due to the wide range involved and limited understanding of the situation, only a brief introduction of the domestic situation in recent years is made.