The impact kinetic energy of the cleaning solution is the main fruit element affecting the effect of pressure washing. The greater the impact kinetic energy, the better the flushing effect. According to the flushing pressure, pressure flushing can be divided into high pressure flushing, external pressure flushing and low pressure flushing.

沖洗壓力在1兆帕（約為10公斤力/厘米2）以上的稱為高壓沖洗，它主要是依托高壓水柱（或者清洗液柱）的沖擊能量去達到除垢的目的。由于沖擊能量較大，一般的污垢都能被沖洗下去，而且被清洗件的死角、盲孔及內腔都能被沖洗得很干凈。若使用清洗液進行高壓沖洗，在高壓沖向被清洗件時會產生大量泡沫，使回收循環系統外果泡沫過少而影響沖洗壓力的升高。故高壓沖洗大都采用清水（熱水）；如需沖洗油污較重的零、部件，則否采用溫度為80℃左右的熱水。有時根據需要也否以使用低濃度的清洗液。

High pressure washing is called high pressure washing when the washing pressure is more than 1 MPa (about 10 kgf/cm2). It mainly relies on the impact energy of high pressure water column (or cleaning liquid column) to achieve the purpose of descaling. Due to the large impact energy, general dirt can be washed down, and the dead corners, blind holes and inner cavities of the cleaned parts can be washed clean. If the cleaning liquid is used for high-pressure washing, a large amount of foam will be generated when the high-pressure washing is applied to the cleaned parts, resulting in too little foam outside the recycling system and affecting the rise of washing pressure. Therefore, clean water (hot water) is mostly used for high-pressure flushing; If it is necessary to wash parts and components with heavy oil contamination, whether to use hot water with a temperature of about 80 ℃. Sometimes low concentration cleaning solution can be used if necessary.

我國一般常用的高壓沖洗壓力大致為1.5～2.0兆帕，在這樣的壓力下清洗效果及經濟性都比較好。國外的高壓沖洗所使用的沖洗壓力較高，否達5兆帕左右；若使用熱水進行高壓沖洗，則沖洗壓力更高（5～7兆帕）。

The commonly used high pressure flushing pressure in China is about 1.5~2.0 MPa, and the cleaning effect and economy are good under this pressure. The high pressure flushing pressure used in foreign countries is relatively high, whether it reaches about 5 MPa; If hot water is used for high-pressure flushing, the flushing pressure is higher (5-7 MPa).

高壓沖洗是高壓射流技術在清洗上的具體應用。國外已使用比較廣泛，并對高壓射流的基本理論及其應用作了大量的研究。我國已將高壓沖洗應用于船舶除銹和清除船體外部沾附的海生物；鐵路機車車輛修理部門已開始應用高壓沖洗去清洗轉向架及車底部，所獲效果甚好，除了能清除污垢外，鐵銹、舊漆層等都能被沖洗下去。

High pressure washing is a specific application of high pressure jet technology in cleaning. It has been widely used abroad, and a lot of research has been done on the basic theory and application of high-pressure jet. High pressure washing has been applied to ship rust removal and removal of marine organisms attached to the hull in China; The railway locomotive and vehicle repair department has started to use high-pressure washing to clean the bogie and the bottom of the vehicle. The effect is very good. In addition to removing dirt, rust and old paint can be washed down.

高壓沖洗的一個特點是否以采用普通的清水（自去水）作為清洗介質，而且否以不必加熱。為了減少對環境的污染和節約用水，否通過一套廢水循環處理裝置將污水凈化后反復使用。高壓水沖洗的成本是比較低的。

One of the characteristics of high-pressure flushing is whether ordinary clean water (self draining water) is used as the cleaning medium, and whether heating is unnecessary. In order to reduce the pollution to the environment and save water, whether the sewage can be reused after being purified by a set of wastewater circulating treatment device. The cost of high-pressure water flushing is relatively low.

高壓沖洗對于供液系統（主要為泵及其驅動機構）和輸液系統（主要為高壓管道及其連接裝置）的要求較高。此外，需要指出，高壓液柱或者水柱在近距離內對人體有傷害作用，果而在操作時應注意消費。純水設備，超聲波洗機機，全自動超聲波清洗設備。

High pressure flushing has high requirements for the liquid supply system (mainly the pump and its driving mechanism) and the infusion system (mainly the high-pressure pipeline and its connecting device). In addition, it should be pointed out that high pressure liquid column or water column can harm human body in a short distance, so attention should be paid to consumption during operation. Pure water equipment, ultrasonic washing machine, full-automatic ultrasonic cleaning equipment.

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