The treatment and maintenance methods of the cracking problem of the ellipsoidal head are as follows:

1. If the elliptical head has cracked, the head can be removed directly on site by plasma along the annular seam toward the side of the cylinder, and then a new head can be reprocessed and installed.

2. After the processing of the new head is completed, it is better to use manual welding when installing it. This kind of welding has a higher capacity density than the capacity of the small wire, and can also well input the heat that occurs during welding, minimize the sensitization treatment range, and effectively avoid larger crystal particles in the heat-affected zone, or serious embrittlement due to the enlargement of crystal particles, so it is very good to reduce the stress caused by welding.

3. If the ellipsoidal head is installed under isolation, because there will be a layer of anti-corrosion coating on the outside of the equipment, it is necessary to use a home decoration coil for cooling treatment. At the same time, the spraying device is well omitted because the entire coil is wrapped.