1、 Characteristics of FYX nitric acid submersible pump

There are three types of FYX nitric acid submersible pumps produced by Huier,

One isMade of high-purity aluminum, suitable for nitric acid with a concentration of over 65% and a temperature not exceeding 60 degrees Celsius，

Another approach is to adoptC4 special high silicon stainless steel produced nitric acid submersible pump, suitable for full concentration nitric acid, temperature from room temperature to boiling point,

Another option isMade in 304L, 304L is suitable for nitric acid with a concentration below 68% and a temperature range from room temperature to boiling point,

The boiling point of nitric acid varies at different concentrationsTherefore, when selecting, users must provide the concentration of nitric acid and the operating temperature.

2、 Selection of Material for Concentrated Nitric Acid Submerged Pump

1. High purity aluminum

Among these materials, high-purity aluminum has excellent resistance to concentrated nitric acid corrosion at room temperature. The disadvantage is that when the concentrated nitric acid temperature exceeds 60 ℃, high-purity aluminum is obviously not resistant to concentrated nitric acid corrosion. Therefore, high-purity aluminum submersible pumps can only transport nitric acid with a working temperature below 60 ℃.

2. High silicon iron

High silicon iron has good resistance to concentrated nitric acid corrosion in various temperature environments, but its fragile nature and poor mechanical properties limit its use in concentrated nitric acid transportation.

3. Tetrafluoroethylene

Tetrafluoroethylene is also resistant to nitric acid corrosion at temperatures below 120 ° C, and due to its own characteristics such as relatively soft mechanical properties and susceptibility to aging. These also limit the use of PTFE pumps in nitric acid equipment. At present, it is mainly used for mechanical seals and gaskets. Use other materials to make the pump

4. Among these materials, special high silicon stainless steel has better comprehensive resistance to concentrated nitric acid corrosion than others. Its corrosion resistance is superior to high-purity aluminum but similar to high silicon iron, and its mechanical strength and machinability are incomparable to high-purity aluminum and high silicon iron. This material is relatively expensive and requires a high initial investment, but it has good corrosion resistance and a long service life. It has good mechanical performance, high safety factor during use, easy maintenance, etc. It can achieve less or no parking during production, improving the production efficiency of the entire production line.

5.304L

In the impression of most users, 316 is always more corrosion-resistant than 304, but this statement is not objectiveIn nitric acid, the corrosion resistance of 304L is higher than that of 316LBecause the presence of Mo reduces the corrosion resistance of stainless steel in nitric acid, the corrosion rate of 304L in boiling 65% nitric acid is 0.15mm/year, while 316L exceeds 0.3mm/year,

304L is suitable for nitric acid with concentrations below 68% and temperatures ranging from room temperature to boiling point.

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3、 Huier Pump Industry recommends nitric acid submersible pumps

1. High cost-effective pump: FYX high-purity aluminum concentrated nitric acid underwater dedicated pump

In concentrated nitric acid delivery environments, most users choose our FYC high-purity aluminum concentrated nitric acid submersible pump because of its low price and a service life of generally 1-2 years. Our Huier after-sales service is also timely and in place, making it the first choice for most users.

2. Value preserving pump: FYX-X special high silicon stainless steel submersible nitric acid pump

We have already introduced the mechanical properties of special high silicon stainless steel above. It has a long service life, excellent resistance to nitric acid corrosion, and can withstand temperatures up to 100 degrees CelsiusAnd any concentration of nitric acid can be used.

The only drawback of this pump is that the cycle is relatively long, and users need to place an order in advance.

3. Low priced nitric acid submersible pump: FYX-L 304L nitric acid submersible pump

The 304L nitric acid submersible pump is suitable for nitric acid with a concentration not exceeding 68%, which complements the FYX high-purity aluminum concentrated nitric acid submersible pump perfectly, and the price of the 304L nitric acid submersible pump is the lowest among the three.

4、 Performance parameter table of FYX nitric acid submersible pump

Quick knowledge: What material is C4 steel?

The chemical name of C4 steel in China is 00Cr14Ni14Si4, and its elemental composition includes C ≤ 0.02% (carbon), Si=3-4.5% (silicon), MN ≤ 1 (manganese), Cr=13-15% (chromium), Ni=13-15%, P ≤ 0.0035% (phosphorus), S ≤ 0.03% (sulfur), and a hardness of HB=121. Commonly known as high silicon ultra-low carbon stainless steel.