First, the reason for the noise:
1. The magnesium oxide powder serving as insulation and heat conduction in the electric heating tube is filled without being compacted and has a gap, and the electric current is generated when the electric current passes, causing resonance;
2, the cause of thermal expansion and contraction, can increase the structural strength to change;
3. The power load per unit area is too high.
Second, the main reasons for the explosion:
1. There is a problem with the welding quality of the pipe, and the pipe is fired at the weld;
2. The surface load of the heating tube is large and the power is too high, which may cause the tube to burst;
3, internal filling, poor packaging, the purity of magnesium oxide is not enough or does not reach the required temperature caused by heat accumulation and burst;
4. The wall thickness of the electric heating tube is too thin;
5, water burning tube empty burning, etc.;
6. The surface area of the electric heating tube is polycondensed or carbide.