全自动搅拌车的气蚀现象
大家知道什么是气蚀吗？全自动搅拌车厂家建议，我们先来看看全自动搅拌车的气蚀现象。
Do you know what cavitation is? The manufacturer of the fully automatic mixer suggested that we first look at the cavitation phenomenon of the fully automatic mixer.
发生在发动机燃烧室的周围，虽然我们从车辆水温表的反馈来看是在90°左右，但发动机燃烧做功，特别是大多数湿式气缸套，局部表面的温度超过水的沸点，要高出一大截。水在沸点附近，会产生大量气泡，这部分气泡反复冲击气缸套表面，微观下的冲击波的压力达到15-20000PSI。我们日常生活中茶壶烧水，滚水沸腾时壶底产生的气泡，道理相似。
It occurs around the engine combustion chamber. Although we can see from the feedback of the vehicle water temperature gauge that it is about 90 °, the engine combustion work, especially most wet cylinder liners, the local surface temperature is higher than the boiling point of water by a large margin. When water is near the boiling point, a large number of bubbles will be produced. These bubbles repeatedly impact the surface of the cylinder liner, and the pressure of the shock wave at the microscopic level reaches 15-20000PSI. In our daily life, when we boil water in a teapot, the bubbles at the bottom of the teapot are similar in principle.
发动机使用的冷却液，通常沸点温度超过130度。如果破坏冷却液的成分比例，乙二醇成分减少。气缸套暴露在较低的沸点下，醇类物质无法附着在表面。穴蚀发生将无法避免，例如200小时后，兑水后的冷却液实验，发动机已经产生缸套激烈气蚀情况，产生更严重的穴蚀。
The boiling point temperature of the coolant used by the engine is usually more than 130 degrees. If the composition proportion of the coolant is damaged, the glycol composition will decrease. The cylinder liner is exposed to a lower boiling point, and alcohol substances cannot adhere to the surface. Cavitation will be unavoidable. For example, after 200 hours, the engine has produced severe cavitation of the cylinder liner in the coolant test after mixing with water, resulting in more serious cavitation.
气缸套外壁的腐蚀和穴蚀现象，主要是由于化学作用、电话作用、液体的冲击作用和机械振动等引起的。其中比较严重的一种是在气缸套的活塞承压面或它对面的外壁上出现的蜂窝状小孔群的穴蚀现象。
Corrosion and pitting on the outer wall of the cylinder liner are mainly caused by chemical action, telephone action, liquid impact and mechanical vibration. One of the more serious is the cavitation of honeycomb small holes on the piston bearing surface of the cylinder liner or the outer wall opposite it.
几年来随着内燃机向高速度、高平均压力方向发展，穴蚀现象也日益严重，有时甚至气缸镜面的磨损还没有达到磨损极限，气缸套已被穴蚀击穿而不能使用。
In recent years, with the development of the internal combustion engine towards high speed and high average pressure, the cavitation phenomenon is also increasingly serious. Sometimes even the wear of the cylinder mirror has not reached the wear limit, and the cylinder liner has been damaged by cavitation and cannot be used.
产生穴蚀的原因在目前还没有完全弄清楚，一般认为主要是由于气缸套的震动和变形引起的。因为在一个工作循环中，活塞作用在气缸的侧压力反复变化，这就促使气缸套发生剧烈震动和变形。您对此有怎样的问题就来我们网站https://www.jfjiaobanche.com咨询吧！
The cause of cavitation is not fully understood at present, and it is generally believed that it is mainly caused by the vibration and deformation of the cylinder liner. Because in a working cycle, the side pressure of the piston acting on the cylinder changes repeatedly, which causes severe vibration and deformation of the cylinder liner. If you have any questions about this, please come to our website https://www.jfjiaobanche.com Ask!
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