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Punching head
Punching head
  • PRODUCT NAME:

    Punching head

  • DESCRIPTION:
    Punching head is a part of the container according to the different geometry...

DESCRIPTION

Punching head is a part of the container according to the different geometry, can be divided into spherical, elliptical, dish-shaped, spherical crown, conical shell and flat cover and so on, which spherical, elliptical, dish-shaped, spherical crown head is also collectively known as convex head. It is applied to various containers, such as storage tanks, heat exchangers, towers, reactors, boilers and separation equipment.

Definition of thickness for GB150-1998 standard

(1) calculate thickness Delta.

The thickness is calculated according to the formula of each chapter. When needed, the thickness of other loads should be included.

(2) design thickness delta D

It is the sum of the thickness Delta and the corrosion allowance C1.

(3) nominal thickness n

It is to design thickness of delta D plus steel thickness negative deviation C1 up to round steel standard specification thickness. That is, the thickness of the pattern is marked.

(4) effective thickness delta e

It is nominal thickness delta n minus thickness of corrosion allowance C2 and thickness of steel minus C1.

(5) relationship of various thicknesses.

(6) feeding thickness (blank thickness)

According to GB150---1998 tenth chapters and various thickness relations diagrams:

Delta s= Delta +C1+C2+ delta 1 (thickness sub design roundness value) +C3 (processing thinning quantity) + (thickness secondary manufacturing circle value).


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