There is a customer reaction in the outside to buy a batch of dry heating tube, the first time the use of the time no problem, power after power off Electric Heater tube will not be hot.
Why is there such a problem?
So today I'll give you an analysis of why it's going to happen.
According to customer feedback information, we understand that the customer is using 304 stainless steel material used in working temperature of 600 degrees Celsius in the environment, this is obviously a problem, in fact, have used the Electric Heater tube friends should know that is 304 stainless steel to withstand the high temperature of 600 degrees.
The material of the Electric Heater pipe is mainly chosen according to the working temperature.
The working temperature is about 200-300 degrees, and the stainless steel 304 is used.
The working temperature is about 400-500 degrees, and the stainless steel 321 is used.
The working temperature is about 600-700 degrees, and the stainless steel 310 is used.
Working temperature 800-900 degrees, use yinggelai material;
On the other hand, it is the surface load of the Electric Heater tube, that is, the power design of the Electric Heater tube. We can use the Electric Heater by detecting the customer's tube power is 3KW per metre, so according to our many years of experience in the Yancheng Hua he burned the power of the electrothermal tube per meter will usually do 1KW, but will also have a lot of manufacturers in order to save the cost per meter of power will be 2-3KW, I think this is done there will be problems because, because the air has negative effects on heat conduction, will cause the internal temperature can not be timely send out Electric Heater tube, Electric Heater tube surface temperature will be so very high, so as to shorten the service life of the Electric Heater tube, and even pipe burst condition.
Here is another point to be emphasized. There are two essential conditions to ensure the service life of the dry heating Electric Heater tube: first, the air circulation system, and the two one is the temperature control system.
We know from the above case that there are several factors to reduce the service life of the dry - fired Electric Heater tube.
Material, surface load, fan cycle, temperature control.