在铁路高速重载发展的今天，搞好客货列车的检修是十分重要的。特别是检修之前的除污、除锈、探伤前的除垢，更是保证质量的根本因素。为达到这一目的，研制了三通阀外部清洗机。根据国外资料介绍，世界先进国家利用砂水法除污、除垢已是十分成熟的技术，在我国也已引进。清洗 In the development of railway high speed heavy load today, it is very important to improve the maintenance of passenger and freight trains. Especially before the decontamination, rust removal, testing before the descaling, but also to ensure the quality of the fundamental factors. To achieve this goal, developed a three-way valve external washing machine. According to the introduction of foreign materials, advanced countries in the world use sand and water method to decontaminate and remove scale, which is a very mature technology and has also been introduced in our country. Cleaning