The material classification, performance characteristics and price differences of stainless steel roots blowers are as follows: all stainless steel roots blowers adopt three blade linear impellers, with gentle intake and exhaust pulsations and low noise. The whole machine has compact structure and beautiful appearance. Then let's talk about the difference between stainless steel roots blower and ordinary roots blower:
1. Stainless steel Roots blower has different anti-corrosion capacity
Roots blower made of stainless steel has strong corrosion resistance, such as carbon dioxide, hydrogen sulfide and chlorine when the transmission medium is acid gas. There are also alkaline gases such as ammonia. When transporting these gases, Roots blower must be made of stainless steel. It is not advisable to use ordinary cast iron Roots blower.
2. The cleanliness of output gas of stainless steel Roots blower is different
The Roots blower used in the food industry requires that the output gas must be 100% clean, such as white sugar industry and milk powder industry. Roots blower made of stainless steel will not produce any micro particles discharged with the gas during the operation of the blower, while cast iron Roots blower will more or less produce micro particle wear which will be mixed into food after the gas is discharged. Therefore, it is better to use stainless steel in the food industry.
3. Stainless steel roots blowers have different prices
The cost of Roots blower made of stainless steel is relatively high, and the products made of expensive raw materials will naturally be expensive, which is generally three times higher than that of cast iron. Moreover, the production process of stainless steel is very difficult, because the material properties are very sticky. Considering the two factors, the price of stainless steel Roots blower is at least several times higher than that of cast iron Roots blower.
4. Stainless steel roots blower has different hardness
Stainless steel roots blower has higher hardness, and cast iron is easier to process.
5. Thermal expansion coefficient of stainless steel roots blower
When stainless steel Roots blower is used to transport steam, temperature must be considered. Because the thermal expansion coefficient of fans made of different materials is different, the thermal expansion coefficient of fans made of cast iron is very different from that of stainless steel fans.
Fan material
Stainless steel Roots blower can be made of many kinds of materials, and processing materials can be flexibly selected according to customer needs.
1. 304 stainless steel roots blower
304 stainless steel is a universal model on the market, with strong corrosion resistance and good strength.
2. 316 stainless steel Roots blower
316 stainless steel roots can be used in the food industry and surgical equipment, and is widely used in the food industry. When many food processing enterprises use roots blowers, most of them use this kind of stainless steel.
3. 301 stainless steel roots blower
301 stainless steel Roots blower has higher carbon content, hardness, strength and processing difficulty than 304 stainless steel.
4. 2205 stainless steel roots blower
Roots blower with 2205 mark has high strength, good impact toughness and good overall and local stress corrosion resistance. Its application fields are mostly paper industry and sewage treatment system.
Will stainless steel Roots blower not rust?
Stainless steel roots blowers are not rust free, but have strong rust resistance, that is, the rust resistance we mentioned. In a dry environment, stainless steel roots blowers can achieve good corrosion resistance and strong corrosion resistance. If we install the stainless steel Roots blower at the seaside, the stainless steel will also rust in the environment containing acid, alkali and salt.
Is the corrosion resistance of stainless steel Roots blower the same?
Here we need to know that different stainless steel models have different corrosion resistance. For example, 304 stainless steel and 316 stainless steel have stronger corrosion resistance. Therefore, the corrosion resistance of stainless steel negative pressure Roots blower is also affected by the stainless steel model.
Introduction of stainless steel fan performance
Does the external force destroy stainless steel Roots and cause rust?
Stainless steel has the ability to resist corrosion by forming a thin, firm, fine and stable chromium rich oxide film (protective film) on its surface to prevent oxygen atoms from continuously penetrating and oxidizing. Once for some reason, this kind of film is constantly damaged, oxygen atoms in air or liquid will continuously penetrate into or iron atoms in metal will continuously separate out, forming loose iron oxide, and the metal surface will be continuously corroded.
What is electrochemical corrosion of stainless steel Roots blower?
Chemical reaction is happening all the time around us, as is the case with Roots blower. Rust of stainless steel Roots blower may also be caused by corrosion caused by electrochemical reaction. Dust or dissimilar metal particles containing other metal elements are deposited on the stainless steel surface
The attachment of particles, the condensate between the attachment and the stainless steel in the humid air, connects the two into a micro battery, which causes the electrochemical reaction and damages the protective film, which is called electrochemical corrosion
Can the corrosiveness of organic juice corrode the stainless steel fan?
As we mentioned earlier, stainless steel will be corroded by acid, alkali and salt. Therefore, anything containing acid, alkali and salt may rust the stainless steel roots blower, such as organic acid and phlegm in vegetables, melons and fruits. Therefore, it is necessary to pay attention to the hygiene of stainless steel fans at ordinary times.
Corrosivity of air pollutants
In places with serious pollution, the air contains acid substances, and some places even have acid rain, which is also corrosive to stainless steel. Therefore, the acid and alkali composition in the air is also a kind of damage to stainless steel fans. Introduction to Roots blower with corrosion resistance
How to prevent corrosion of stainless steel fan?
Stainless steel anti-corrosion shall ensure that the stainless steel roots blower is not damaged by external forces. Secondly, it shall ensure that the stainless steel roots blower is clean and tidy. Last but not least, according to our national standard, the minimum grade of stainless steel is 304. If the standard is not met, the corrosion resistance needs to be investigated, so the material is also very important.
