Tuesday, January 4, 2022

What is spherical head

What is spherical head

What is spherical head

The spherical head, is based on the spherical part of the spherical shell formed by the head, a hemispherical head and the ball head two without folding.

Material: 304,304L, 321,316,316L, 310S and other materials. 

Executive Standard: JB / T4746-2002 

Features: forging excellent, smooth surface, acid and alkali, high temperature, appearance, texture and strong performance. 

Spherical head Description: Its name as a spherical shape, named for the spherical head ball head is precision CNC machining type lathe, lathe finishing, welding and other processing.

Note the use of the spherical head points occasions:

1. Carbon steel head will crack occurs in nitrates, ammonia, sodium and other alkaline environment, please note when ordering head eliminate the residual stress. 

2. The austenitic stainless steel in chloride ions particular environment will occur stress corrosion cracking, select the appropriate material at design time. 

3. The need galvanized or aluminized steel container, please do the heat treatment, the removal of residual stress.

Compared with other forms of spherical head, the diameter and pressure of the same conditions, the required thickness of the smallest, the same size of the head of the same surface area of the smallest, the most used materials, the force is very uniform. However, due to the manufacturing difficulties, in general, in addition to the higher pressure, the larger diameter of the pressure vessel, the other containers are less.

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