-
Phone
13989709492
-
Address
No. 3-7 Yongxu Road, Yongxing Street, Longwan District, Wenzhou City
Product Categories
Wenzhou Baohui Fluid Equipment Co., Ltd
Elliptical/Standard Head
NegotiableUpdate on 09/14
- Model
- Nature of the Manufacturer
- Producers
- Product Category
- Place of Origin
Overview
Product Name: Elliptical/Standard Head Product Type: Elliptical Head Series Product Introduction: Head Standard: JB/T4476 Specification: Sizes Available R=D0.9 Material: 304, 316, 304L, 316L, 201, Q235B, etc. Widely Used: Pharmaceutical
Product Details
Product Name: Elliptical/Standard Head
Product Type: Elliptical Head Series
Product Introduction
Head standard: JB/T4476
Specifications: Available in size
R=D×0.9
材质： 304、316、304L、316L、201、Q235B 等、
Widely used in industries such as pharmaceuticals, environmental protection, food, boilers, water treatment, beer, etc
Applicable to: Suitable for refrigeration, pharmaceuticals, food, environmental protection, water treatment, etc
Characteristics of Cold Processing
1. Without heating, there will be no material degradation, especially suitable for processing stainless steel heads
2. Without heating, there will be no dimensional changes caused by cooling shrinkage, and the shape is regular, with precise and consistent dimensions
3. Without heating, the surface of the formed head maintains the smooth surface of the original material, with a beautiful appearance
The inner diameter of the container is Di=4000mm, the calculated pressure is Pc=0.4MPa, the design temperature is t=50 ℃, the head is a standard elliptical head, the material is 16MnR (the allowable stress of the material is 170MPa at the design temperature), the negative deviation of the steel is not more than 0.25mm and does not exceed 6% of the nominal thickness, the corrosion allowance is C2=1mm, and the welding joint coefficient of the sealing joint is 1. Calculate the thickness, design thickness, and nominal thickness of the elliptical head.
KpDi
Calculate thickness δ=----------------=4.73mm
2[σ]tΦ-0.5pc
Calculate thickness δ d=δ+C2=4.73+1=5.73mm
Considering that the effective thickness δ e of the standard elliptical head should not be less than 0.15% of the inner diameter Di of the head, the effective thickness δ e=0.15% Di=6mm
δe>δd、C1=0、C2=1、 名义厚度 δn=δe+C1+C2=6+0+1=7mm
Considering the thickness of the steel standard specification has been increased by 1mm, the first design rounding value △ 1=1 is taken as δ n=8mm.
According to the technical data of a professional head manufacturer, Di=4000 and δ n=8, the thinning amount of the head processing is C3=1.5mm, and the second round rounding value of the thickness is △ 2=0.5.
If it is required that the forming thickness of the head should not be less than the nominal thickness δ n minus the negative deviation C1 of the steel plate, then the feeding thickness is:
δ s=δ n+C1+C3+△ 2=8+0+1.5+0.5=10mm, and the minimum thickness after forming is 8.5mm. If the forming thickness of the head is not less than the design thickness δ d (δ e value should be taken), then the feeding thickness is: δ s=δ d (δ e)+C3+△ 2=8mm, and the minimum thickness after forming is 6.5mm, which is greater than the effective thickness δ e, greater than the design thickness δ d, and the calculated thickness δ.
Product Type: Elliptical Head Series
Product Introduction
Head standard: JB/T4476
Specifications: Available in size
R=D×0.9
材质： 304、316、304L、316L、201、Q235B 等、
Widely used in industries such as pharmaceuticals, environmental protection, food, boilers, water treatment, beer, etc
Applicable to: Suitable for refrigeration, pharmaceuticals, food, environmental protection, water treatment, etc
Characteristics of Cold Processing
1. Without heating, there will be no material degradation, especially suitable for processing stainless steel heads
2. Without heating, there will be no dimensional changes caused by cooling shrinkage, and the shape is regular, with precise and consistent dimensions
3. Without heating, the surface of the formed head maintains the smooth surface of the original material, with a beautiful appearance
The inner diameter of the container is Di=4000mm, the calculated pressure is Pc=0.4MPa, the design temperature is t=50 ℃, the head is a standard elliptical head, the material is 16MnR (the allowable stress of the material is 170MPa at the design temperature), the negative deviation of the steel is not more than 0.25mm and does not exceed 6% of the nominal thickness, the corrosion allowance is C2=1mm, and the welding joint coefficient of the sealing joint is 1. Calculate the thickness, design thickness, and nominal thickness of the elliptical head.
KpDi
Calculate thickness δ=----------------=4.73mm
2[σ]tΦ-0.5pc
Calculate thickness δ d=δ+C2=4.73+1=5.73mm
Considering that the effective thickness δ e of the standard elliptical head should not be less than 0.15% of the inner diameter Di of the head, the effective thickness δ e=0.15% Di=6mm
δe>δd、C1=0、C2=1、 名义厚度 δn=δe+C1+C2=6+0+1=7mm
Considering the thickness of the steel standard specification has been increased by 1mm, the first design rounding value △ 1=1 is taken as δ n=8mm.
According to the technical data of a professional head manufacturer, Di=4000 and δ n=8, the thinning amount of the head processing is C3=1.5mm, and the second round rounding value of the thickness is △ 2=0.5.
If it is required that the forming thickness of the head should not be less than the nominal thickness δ n minus the negative deviation C1 of the steel plate, then the feeding thickness is:
δ s=δ n+C1+C3+△ 2=8+0+1.5+0.5=10mm, and the minimum thickness after forming is 8.5mm. If the forming thickness of the head is not less than the design thickness δ d (δ e value should be taken), then the feeding thickness is: δ s=δ d (δ e)+C3+△ 2=8mm, and the minimum thickness after forming is 6.5mm, which is greater than the effective thickness δ e, greater than the design thickness δ d, and the calculated thickness δ.
