承壓水箱為目前自動上料攪拌車生產廠家主要采用的水箱。此類水箱因承受一定壓力大多采用鋼制，一般筒體采用3～4mm 的 Q235鋼板卷制，封頭采用 4～5mm的Q235 鋼板或4mm的Q235鋼板制成。其內部容易生銹，需做涂層防護，但目前大多數廠家為了減少成本，均不做防腐處理。
The pressurized water tank is the main water tank used by the manufacturers of automatic feeding mixer at present. Most of these water tanks are made of steel because they bear certain pressure. Generally, the cylinder is made of 3 ~ 4mm Q235 steel plate, and the head is made of 4 ~ 5mm Q235 steel plate or 4mm Q235 steel plate. Its interior is easy to rust and needs coating protection, but at present, most manufacturers do not do anti-corrosion treatment in order to reduce costs.
How to solve the corrosion problem of steel water tank of automatic feeding mixer truck and what are the advantages and disadvantages of water tanks of different materials? (Figure 1)
From a technical point of view, I think the main pressure water tank is the main manufacturer of automatic feeding mixer truck, and there are two ways to solve the corrosion problem.
First, considering the process processing and quality control of existing products, such as galvanized treatment, it is more suitable for automobile manufacturers pursuing low cost, with flexible process and easy product modification. However, electroplating has many disadvantages, strict process requirements, difficult product quality control, especially the corrosion of welding joint is still difficult to deal with, and so on. If the dip coating process is adopted, the cost is higher. Automatic feeding mixer
二是從產品的材料上考慮。目前可替代的材料主要有不銹鋼、塑料 含玻璃鋼 和鋁合金等。這幾種材料都能夠完全解決產品的銹蝕問題，但由于每種材料的加工工藝不同，又都存在著各自的優缺點。自動上料攪拌車
Second, consider the material of the product. At present, the replaceable materials mainly include stainless steel, plastic, including FRP and aluminum alloy. These materials can completely solve the corrosion problem of products, but due to the different processing technology of each material, they all have their own advantages and disadvantages. Automatic feeding mixer
The steel water tank is suitable for pneumatic water supply, with simple manufacture and convenient maintenance. Years ago, some enterprises used FRP water tanks for water distribution pumps, which are cheap, light and not easy to rust. But the disadvantage is that it is easy to break, difficult to repair, and not suitable for pneumatic water supply. At present, plastic water tanks are mostly used in drinking water tanks on passenger cars and trucks. They are light, environmentally friendly and have high strength. They begin to be popularized to engineering vehicles. The pressure bearing of the plastic box itself shall meet the requirements, but the sealing of the joint part shall be handled well for the use of the water distribution pump. The protection treatment of low-temperature brittleness should also be done, but this will increase the production cost.