How to choose the shell material of the electric heating tube? The shell should choose the electric heating tube with the applicable specifications. When choosing the appropriate electric heating tube, the shell material should first be considered. The electric heating tube is an important heating element in the electric heating equipment, and it is used in different working environments. , Various materials play different roles, and play a vital role in the life and quality of the electric heating tube. Let's take a look at how to choose the shell material of the electric heating tube.
How to choose the shell material of the electric heating tube
1, stainless steel electric heating tube
There are many different grades of stainless steel for electric heating pipes, such as stainless steel 304, stainless steel 321, stainless steel 316L, stainless steel 310S and so on. Conventional non-alkaline water and oil can be heated with stainless steel 304. Some acid and alkaline liquids use stainless steel 316L, but strong acid and strong alkali are not suitable for stainless steel 316L. From the perspective of temperature resistance, the general working temperature is Stainless steel 304 can be used for 300 degrees Celsius, stainless steel 321 is recommended for working temperatures around 500 degrees Celsius, and stainless steel 310S is recommended for higher temperatures. The above is purely personal experience, not an accurate theoretical value, and is for reference only.
2, titanium electric heating tube
Titanium heating tubes are generally suitable for chromium plating, acid copper, nickel plating, passivation, filling, oxidation bath, chromic acid anodization, phosphating acid tin plating and other processes, so the price of titanium heating tubes is relatively high.
3, Teflon electric heating tube
Teflon electric heating tube is also called Teflon electric heating tube, PTFE electric heating tube, commonly known as PTFE tube. Teflon heating tubes are generally suitable for corrosive liquids such as strong acids and alkalis. The general process temperature is ≦105℃. The advantages of Teflon heating tubes are non-sticking, non-scaling, uniform surface heat dissipation, but the price is also very high. , Due to the low temperature requirements, the surface load should not be too high when designing, so the Teflon electric heating tube has low power and high cost, so very few Teflon electric heating tubes are used.
4, quartz electric heating tube
Quartz heating tube is generally suitable for anti-corrosive liquids, except for hydrofluoric acid. The disadvantage is that it is extremely fragile.
The material selected for the electric heater must be resistant to high temperature to ensure that the electric heater is not damaged under high temperature conditions, so that the electric heater can work in harsh environments. The advantages of electric heaters are very obvious. , Bread cones, cooking utensils, electric heaters, water boilers and other equipment can be used, it is a very good electric heating equipment.