The material of the heating tube sleeve is also one of the indispensable key factors in the process of selecting the heating tube. The heating tube is an important heating element in the electric heating equipment. According to different working environments, the choice of material is different. If you choose The unsuitability of the heating tube is relatively large. Next, based on my work experience, I will tell customers how to choose the material of the heating tube sleeve.
1. Stainless steel heating tube
There are many different grades of stainless steel for 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 around 300 degrees, stainless steel 321 is recommended for working temperature around 500 degrees, 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 heating tube
Titanium heating tube is 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 tube 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. , Due to the low temperature requirements, the surface load should not be too high when designing, so the Teflon heating tube has low power and high cost, so there are few customers who use Teflon heating tubes.
4. Quartz heating tube
Quartz heating tubes are generally suitable for anti-corrosive liquids, but apart from hydrofluoric acid, the disadvantage is that they are extremely fragile.
According to the above description, combined with the experience in practice, according to the strength of acid and alkali from weak to strong, we generally choose the order of materials for stainless steel 304 heating tube, stainless steel 316 heating tube, Teflon heating tube, and titanium heating tube. Prices have also increased sequentially. The selection of the jacket material of the heating tube will affect the performance of the heating tube in different environments, and the electric heating element is better than other metal heating types. In the selection process, customers need to select the most suitable heating element according to actual needs. Our company has been engaged in the heating pipe industry for more than ten years, and can be designed according to the drawings (voltage, power, size) provided by the customer or by our technicians according to the conditions you need. After confirming to you, the final order is placed.
