one. Causes of scale formation
Since the water temperature in the water tank (heatsink) has been maintained at a high temperature (65-90 degrees Celsius), the hydrocarbons in the water will be combined with calcium and magnesium ions to form insoluble calcium carbonate and magnesium carbonate. Water base. Then, as the water evaporates and concentrates, the water alkali content increases and reaches saturation, forming scale. Therefore, adding pure water containing higher concentrations of calcium and magnesium ions will result in the formation of scale more easily than adding ordinary tap water.
two. Understanding of pure water
Two kinds of pure water: one is industrial pure water, does not contain any mineral composition, is commonly known as distilled water or space water. Another type is pure drinking water, which contains many calcium and magnesium ions and other minerals to supplement the body's needs. Almost all of the pure drinking water currently available on the market has added minerals, so adding this pure water to the tank has no effect at all on suppressing the scale formation in the tank.
three. The harm of scale in the circulating waterway
The water tank acts as a heat sink under normal conditions, but once scale is generated around the tank, it will greatly affect the cooling effect of the tank. Because the thermal conductivity of scale is very low, it is only 1/25 of that of cast iron and 1/50 of that of brass. It forms scales in the cylinder lining and the water channel of the cylinder head, which causes the local area to rise due to poor heat dissipation, which can cause the engine to rise. Cracks and cylinder head deformations occur in weak parts. It also not only deteriorates the cooling performance of the cooling system, but also causes local high-temperature zones, deteriorates the lubrication conditions, increases the engine temperature, and accelerates the wear of the engine system; it also blocks the heat pipe or the cooling system piping, greatly reducing the heat transfer efficiency. Overheating the engine directly jeopardizes the safety of the driver.
four. Scale cleaning method
1. Manual cleaning method: The automobile water tank needs to be dismantled, and the scale is removed with an artificial hammer, scraper, shovel, etc.; the descaling efficiency is low, the labor intensity is high, and it is not easy to clean, which may cause secondary damage to the water tank.
2. Ordinary scale cleaning agent: The tank needs to be dismantled. The cleaning is not complete, the odor is large, and the corrosion is strong, which can easily cause the aging of the tank and shorten its service life.
3. Professional car tank descaling agent: It can be cleaned without disassembly, and it can also be cleaned without stopping. The dedicated scale cleaning agent can be directly poured into the automobile water circulation system, so that it can be soaked, idling cycle or driving 20-30 minutes, depending on the degree of scaling can be extended for a suitable time, generally not more than an hour later, the water tank and the internal system The scale remover is discharged, and repeated flushing with water can effectively remove scale, rust, mud and various harmful substances in the engine water circulation system.
Remind everyone that the tank is best to add antifreeze, antifreeze has anti-corrosion, antifreeze, anti-scaling, anti-boiling and other advantages, the use of dirty water will have a serious impact on vehicle performance after the scale, compared to the cost of the engine, add water The cost is obviously much smaller.
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