What are the materials of the electric heating tube? The electric heating tube is a kind of heating element that is often used in our lives. It is understood that there are many situations that cause the electric heating tube to leak or fail. It is more common to use time without maintenance. Today I will explain to you what the material of the electric heating tube can be divided into based on the working environment.
What are the materials of the electric heating tube according to the working environment?
1. Stainless steel heating tube. There are many different grades of stainless steel heating tube, such as stainless steel 304, stainless steel 321, stainless steel 316L and so on. The normal heating tube is mainly made of stainless steel 304, which is also the material that customers choose the most in the work. The one that is better than stainless steel 304 is stainless steel 321. Stainless steel 316L is generally suitable for liquids with PH>7-14, that is, suitable for alkaline liquids, but it is generally not recommended to be used in strong acids and alkalis.
2, titanium 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 heating tube. Teflon heating tube is also called Teflon heating tube, PTFE 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. .
4. Quartz heating tube. Quartz heating tubes are generally suitable for anti-corrosive liquids, except for hydrofluoric acid.
Then if the electric heating tube fails due to improper use, how to judge and deal with it, let's take a look at the damage judgment and treatment method of the electric heating tube.
The main damages of the electric heating tube are:
1. Leakage (phenomenon: automatic circuit breaker or leakage protection switch trips, electric heating tube can not be heated), accounting for more than 90% of heater failures
2. No heating (the internal heating wire is burned or the connection box is broken)
3. Electric heating tube cracked or broken (electric heating tube crack, electric heating tube is corroded and broken, etc.)
The damage treatment method of the electric heating tube:
1. For electric leakage, confirm the leakage point. If it is the electric heating tube itself, it can be baked in an oven. If the insulation resistance cannot be increased, the electric heating tube may need to be replaced. Wrap the broken skin with tape or replace the wire.
2. If the heater is not heating, the internal wire of the electric heating tube is broken, which cannot be repaired and can only be replaced; if the circuit or joint is broken or loose and reconnected.
3. If the electric heating tube is broken or broken, only replace it.