QB/T 2556-2002 Design regulations for cast iron drying cylinders for papermaking machinery
Some standard content:
TCS55.150
Classification number Y91
File number: 108532002
Light industry standard of the People's Republic of China
QB/T2556—2002
Replaces QA/3663-1990
Design standard in cast iron dryers used in paper machinery2002-09-21issued
National Economic and Trade Commission of the People's Republic of China2002-12-01implemented
QB/T2555-2C02
This standard is a revision of the original light 1 professional standard Yan70/TY910)8-1989 design regulations for cast titanium parts for manufacturing and repair 3 (this standard was issued by the National Light Industry Bureau [19] No. 112 and the conversion standard number was QB3663-199, and the internal interpretation remains unchanged). The internal group:
On the basis of the external diameter high pressure 0.5MPa cast iron drying can be used, the outer diameter of the drying is 3mm, and the load rate is increased from 0.5M to 0.8M: in order to meet the domestic and foreign market requirements, the cast iron safety system efficiency is taken as 10, and the original standard force increase coefficient is adjusted from K=1.4 to K=1.2, in order to give full play to Yaojiang's thermal efficiency:
The standard element is more than 20m, and the price force is greater than U5. It should be used to pull the required value to ensure the safety of the cross-line:
Consider the characteristics of the drying body, according to As well as ensuring the required filling depth and other manufacturing factors, the cylinder body thickness is not less than 6mm
-- plate according to the casting and baking red Jiang outer body small, front low degree position is divided into grades: · cover model modification design has called shape and \ shape and other children's punching structure: this design stipulates the addition of the cylinder head shape structure one calibration according to the design teaching data provided by Valmet ASM and domestic position experience, the work of the hall for the P baking benefit of the inner section of the small difference thickness in the Appendix B made provisions: baking low and end connection price sales material certificate 1501 R special system capital 3 modification of the corresponding wide repair. This standard reference A, B is the resistance record, Appendix C, Appendix D, Yin record E is the porcelain material pressure record. This standard is the national light industry association.
This standard was drafted by the National Light Machinery Standardization Technical Committee. The Light Industry Anti-corrosion Machinery and Electrical Equipment Research Institute was responsible for the drafting of this standard, and the two companies participated in the drafting of this standard. They were: Jiang Chuanwen, Fang Ying, Ma Ling, Ye Dongjing, Da, Yigong, and Zhang Gongwen. This standard was first issued in 1989 and revised in December 2002. From now on, this standard will replace the original industry standard issued by the National Light Industry Institute of the State Council, which was ... KAca=
Design regulations for cast iron drying cylinders for papermaking machinery
This standard defines the basic requirements for the design of cast iron drying cylinders for grade 1 machines as a calculation formula, QB/T255B--2002
The standard is suitable for cast iron drying cylinders with an outer diameter of not more than 380Umm and a maximum working force of not more than 0.8Ma for lower-end dryers, plate dryers and aggregate plates (hereinafter referred to as "drying cylinders").
2 Normative references
The following documents become the provisions of the public standard through the reference of this standard. 5 The referenced documents of the third phase, and their subsequent amendments (excluding the revised version) or revised versions are different from the standards: However, the parties who have reached an agreement on this standard will study whether the new version of this document can be used. It is a non-referenced document, and its latest version is applicable to the six standards. B/T6-1999 high quality delivery point structure
GB1184-199 shape and position tolerances GT/T122R-1991
GB/[3U77-1599
steel grade oil grade large hexagonal head screw
metal structure shop technical conditions
GB/T 5782—2000
Hexagonal head end
Gray holding titanium parts
GB/T9130.—198R
JB/I7945—1999
Test method for specific energy of casting
QB/T3917—1999
8 Definition
Manufacturing machine reporting and driving half
Modification design for the following:
Working pressure (maximum allowable working pressure
Account under normal working conditions, may reach other rated pressure. 3.2
Immersion pressure
Refers to the test work Pressure and design temperature are used as the design load components. The pressure is slightly higher than the design temperature! Or equal to the working capacity.
Design temperature
Starting from the working process: This is the bottom setting, the temperature of saturated gas is 3.4
Calculation principle
Calculated under the action of various loads in the side layer, the calculated body rate is 3.5
Design principle
Including the calculation of the net thickness and the thickness of the body. 1
O/T2556-2002
4Basic requirements
Baking as a square machine, its design is in accordance with the national Relevant laws, regulations and rules, as well as relevant pressure vessel safety monitoring equipment: 4.1
Monitoring of pressure vessel control:
4.2 Loads
The main loads that need to be considered in the design process are as follows:
, red steam
b; external loads caused by the roughing operation of the blanket and the support e: the load caused by the water in the car or the water when the water stops reaching the test. 4.3 Water pressure test
4.3.1 After the cylinder is manufactured, it must be tested with water pressure. The test pressure is 2 of the design pressure. 4.3.2 Items and requirements not specified in the pressure test drawing are not included: 4.4 Allowance of cast iron 4.4.1 Calculate the stress of the casting by considering the effect of the virtual joint strength. 4.4.2 Calculate the allowable bending strength of the product according to the specific requirements. 4.4.3 Calculate the allowable bending strength of the casting by taking the allowable tensile strength of 1.5 pieces as the actual strength. 4.5 The additional strength of the casting is the wear resistance of the casting. The additional strength is the wear resistance of the casting. The required depth of the casting should be zero. The thickness should not be less than 6mm. 4.6 Material and heat treatment. The mechanical properties of the casting should be in accordance with the requirements of 1. Mechanical properties of gray iron castings. H12 (9434-1488)
H1256 H:1$439—1988)
T300((B/ 9431--U88)
The mechanical properties of the anti-movement quality/:
462 should not be lower than that of T200. 4.6.3 The baking oven with an outer diameter greater than 2000mm should not be made of HT200. When the five-sided impact and heat treatment of the body and the cover are required to be repeated in the drawing, the control table can be used as small as /
47.1 When the outer diameter of the part is not less than 2000mm, the point surface hardness shall not be less than H8170: the outer diameter of the part is greater than 200m: the surface hardness shall not be less than 15!90,
4.7.2 After the body is produced, measures should be taken in the process to eliminate the given residual stress or carry out effective treatment, 47.3 The cast flange should be aged. 4.8 The performance grade of the selected parts shall meet the requirements of Table 2. Performance grade of bolts
Injection outer diameter
80G--1500
>1.500- 3 800
1500---3 80K
Gongzhi Design Leda
Dongjianqiujing
M20--M3D
34243536
X24-M48
-TI KANT Ka-
Performance Equivalence
Ren Di Shan
4. Standards and allowable stress of steel used in daily profit price Table 3 Standards and allowable stress of steel used in butterfly bolts
State Standards
(+$S/T 699—1999
GR/ 3077-1999
Design calculation of drying cylinder
5.1 Symbols
Usage status
M24--M27
M24--M3G
M24--mF48
Outer diameter of the shaft neck, mm:
Outer diameter of the drying cylinder, m:
Normal diameter, m
Ph-diameter of the center circle, mm
d-diameter of the neck, mm:
--Connection screw of the body and cover The diameter of the male diameter is: Q#, T2556-2002
Use F2
K under the temperature of the cylinder: take 1.2: including the temperature difference between the inside and outside of the cylinder: the temperature difference between the heat and the load) K-light test normal effect, average 2.4:
L-new special bearing to the south of the measured distance, rt: (one year without continuous war at the maintenance amount K. degree, mm; a frequency α center to the method: the root is separated, mm:-
R.R2. R,.R
One body and the number of connecting ends:
The part that bears,
Design pressure, MPa:
Main body half, mm:
New special dynamic side support force, N:
Main body where the new learning end is connected, m
Cylinder cone neck and cylinder joint, ("):
First body measurement, mm:|| tt||Meanwhile, the net weight of the body is calculated, m:
—New body flange size, mm
6.—Cylinder flange thickness, mun
Calculation method, MPa
(a—Strength of tensile strength of cast iron material, MPa: (—Strength of cast iron material, MPE
QB/T25E8—2002
For details, see Figure 1
5 2 Design calculation of the casting body
Allowable stress of casting material, Ma;
Allowable bending force of casting material, MP: Equivalent tensile stress of joint, MPE.
Figure 1 Casting cylinder
5.2.1 Equivalent outer diameter series of castings.
5.2.2 Equivalent tensile stress of castings
According to ("Let:
The values of the calculations must be more than [c
5. 2. 3 The design thickness of the cylinder wall
is calculated according to formula (2).
5.2.4 The design thickness of the cylinder wall
is calculated according to formula (3).
is combined with (2) and (3) to obtain the design and calculation of the cylinder body with different straight extension specifications. The deduced values are shown in the following table. 5.3 Geometric parameters of discontinuous structure of cylinder body
5.3.1 The length ratio of production and baking is based on the process. There are concave types of compression body that are not salable and can be selected (Figure 2) Y YKANrKAca=
5.3.2 For the pre-transition, the requirements of 4
Figure 2 The shape of various non-connected structures
The new environment adopts an angle of not less than":
The length should be less than mn;
) The design of the temporary body and the smoothness of the liquid
QB/T2656-2002
5.3.3 The requirements for the connection tree are that the angle is not less than 30mm, and the body and flange are smooth. 5.4 The design of the cylinder head
can adopt a concave object (Figure 3), or a mesh-shaped system (Figure 4 The concave structure of the cover in Figure 3
Figure 4 The convex structure of the cylinder head
5.4.2 The various parts of the cover are round and flat. 54.3 The thickness of the cover part should not be smaller than the "feeling of the cover method". 1. The force is not more than 0.5MPa. The cylinder flange thickness should not be less than the specified value of record A. 1. The force is greater than 10 D.SMP. The cylinder flange thickness should not be less than the specified value of record B. 5.4.4 The outer diameter of the baking cloth is greater than 2000rmrm. When the design force is 0.5MPa, the city director should adopt the state value of the two-body structure in the benefit connection diagram 5, the outer diameter is not more than 0m, the person is not more than 0.5, and the double body structure is not more than 5.5. The design of the manhole of the cover
5.5.1 The outer diameter is not less than 125mm, and the outer diameter is not less than 1500m. The manhole should be opened.
QB/T2556—2002
5.5.2 The manhole of the cover adopts the outline form, the short axis of the manhole is aligned with the cylinder direction, and the manhole flange stop can be as far away as possible: 5.5.3 The opening part that needs to be opened should adopt the convex integral reinforcement, and its reinforcement should be small. The design of the body flange
Figure 5 shows the connection structure between the body and the cylinder head at both ends. 5.6.1 The thickness of the new body is checked according to the formula (4). K
5.6.2 The design of the technical method should also be different from the total body method. The connection size of the bolt is less than 5. Check the material and allowable pressure of the cylinder head bolts
The force values are shown in Table 3. The force of each bolt is calculated by formula (5). 4kiD
The calculated value must meet the requirements of [
The reference value of the material is shown in Table C: 5.8 Check of short shaft neck
The variable force of each variable diameter section is also corrected by formula (6). R, L
The value obtained must meet the requirement ≤1.
5.9 When the outer diameter of the equipment is less than 2000mm and the design pressure is 0.5MPa, the test is carried out according to the specified degree of calculation. The limit element analysis of the body should also be placed. The force of the positive and negative parts of the material should not be greater than 2 of the effective force. %
HKA NYKA
Appendix A
(Normative Appendix)
When the working pressure is more than 0.5MPa, the small flange of the cylinder cover should be 1250
(Normative Appendix)
When the working pressure is more than 0.5MPa, the small flange of the cylinder cover should be 1250
QB/T2556—2002
Qn/T2556-2002
3660-3Hx7
Appendix C
(Non-destructive Appendix)
Diameter, number and material of the cylinder body and cylinder joint connection p/Mra
End section
End control diameter mn:
M2G--M24
HTKAONYKAa=
35CToA
35CMaA
35Cr04
Red envelope according to the specification: Dm
Attached edge D
(Scientific pump)
Recommended values of calculated thickness and design thickness of cylinders with different diameters g/haPu
11T250
irr:300
1TT200
TTT250
Err30G
PRT 30G
HET250
QB/T2556-2002
QB/T256—2002
Appendix E
(Informative Appendix)
Red body outer diameter use series
-TKANY KAa=
Yao Medical Department
Tax certificate, baking:4. The design thickness of the cylinder wall
is calculated according to formula (3).
Connect (2), (3) and obtain the design and calculation of different straight extension specifications, and the deduced values are shown in the following table 5.3 Geometric parameters of discontinuous cylinder structure
5.3.1 Length ratio production and baking process according to the process, there are concave pressure body but not salable damage can be selected (Figure 2) YYKANrKAca=
5.3.2, for the price of transition, 4 requirements
Figure 2 various discontinuous structure shape
new environment angle is not less than ":
length should be less than mn;
) design and temporary body and cleanliness smooth liquid
QB/T2656-2002
5.3.3 The requirements for the joint tree are not less than 30mm, - the body and flange are smooth 5. 4.4.2 The design of the cylinder head can be concave (Figure 3), or it can be net-shaped (Figure 3). The concave structure of the cylinder head can be used. Figure 4.4.3 The convex structure of the cylinder head can be used. 5.4.2 The roundness of each part of the cylinder head should not be too flat. 5.4.3 The degree of the cylinder head should not be too small. 1. The force should not be more than 0.5MPa. The cylinder head should not be more than 0.5MPa. The cylinder head should not be more than 0.5MPa. The cylinder head should not be more than 0.5MPa. Flange should not be less than the provisions of B, 5.4.4 baking cloth size greater than 2000rmrm, design day force day: 0.5MPa, the city should adopt the state of the value of the body in the benefit of the structure of the diagram 5, the outside not more than 0m, no more than 0.5, not double the real body structure 5.5 cover hand hole design
5.5.1 more than not more than 125mm, the example of the small hand hole: the outer diameter is not less than three 1500m years, the example of the mark, The manhole should be opened.
QB/T2556—2002
5.5.2 The manhole of the cover should be in the form of a drawing, the short axis of the manhole should be aligned with the cylinder head, and the cover flange stop should be as far away as possible: 5.5.3 The opening part that needs to be opened should adopt a convex integral reinforcement, and its reinforcement should be small.
5.6 Design of the body flange
Figure 5 Connection structure between the body and the cylinder heads at both ends 5. 6.1 The thickness of the new body shall be checked according to formula (4). K
5.6.2 The design of the bolt shall be less than the total size of the bolt. 5. Check the cylinder head bolts. The material and allowable pressure values of the cylinder head bolts shall be checked according to formula (5). The value of the cylinder head bolts shall be calculated according to formula (4). The value of the cylinder head bolts shall be calculated according to the material and allowable pressure values of the cylinder head bolts. See Table 3 for the calculation of the value of the cylinder head bolts. See Table 3 for the calculation of the value of the cylinder head bolts. 5.8 Check of short shaft neck
The variable stress of each variable diameter section is also calibrated by formula (6). The value obtained by R,L
must be less than or equal to 1.
5.9 When the outer diameter of the equipment is less than 2000mm and the design pressure is 0.5MPa, the test is carried out according to the specified measurement, and the limit element analysis of the material distribution should be placed. The measured stress at the positive and negative parts of the material should not be greater than 2 times the effective stress. %
HKANYKA
Appendix A
(Normative Appendix)
When the working pressure is more than 0.5MPa, the small flange of the drying cylinder cover should be 1250
(Normative Appendix)
When the working pressure is more than 0.5MPa, the small flange of the drying cylinder cover should be 1250
QB/T2556—2002
Qn/T2556-2002|| tt||3660-3Hx7
Time Record C
(Confidential Appendix)
Diameter, number and material of the drying cylinder body and the cylinder connection hook p/Mra
End subtraction number
End control is called this diameter mn:
M2G--M24
HTKAONYKAa=
35CToA
35CMaA|| tt||35Cr04
Red envelope according to external specifications: Dm
Attached edge D
(Scientific pump)
Recommended values of calculated thickness and design thickness of cylinders with different diameters g/haPu
11T250
irr:300
1TT200
TTT250
Err30G
PRT 30G
HET250
QB/T2556-2002
QB/T256—2002
Appendix E
(Informative Appendix)
Red body outer diameter use series
-TKANY KAa=
Yao Medical Department
Tax certificate, baking:4. The design thickness of the cylinder wall
is calculated according to formula (3).
Connect (2), (3) and obtain the design and calculation of different straight extension specifications, and the deduced values are shown in the following table 5.3 Geometric parameters of discontinuous cylinder structure
5.3.1 Length ratio production and baking process according to the process, there are concave pressure body but not salable damage can be selected (Figure 2) YYKANrKAca=
5.3.2, for the price of transition, 4 requirements
Figure 2 various discontinuous structure shape
new environment angle is not less than ":
length should be less than mn;
) design and temporary body and cleanliness smooth liquid
QB/T2656-2002
5.3.3 The requirements for the joint tree are not less than 30mm, - the body and flange are smooth 5. 4.4.2 The design of the cylinder head can be concave (Figure 3), or it can be net-shaped (Figure 3). The concave structure of the cylinder head can be used. Figure 4.4.3 The convex structure of the cylinder head can be used. 5.4.2 The roundness of each part of the cylinder head should not be too flat. 5.4.3 The degree of the cylinder head should not be too small. 1. The force should not be more than 0.5MPa. The cylinder head should not be more than 0.5MPa. The cylinder head should not be more than 0.5MPa. The cylinder head should not be more than 0.5MPa. Flange should not be less than the provisions of B, 5.4.4 baking cloth size greater than 2000rmrm, design day force day: 0.5MPa, the city should adopt the state of the value of the body in the benefit of the structure of the diagram 5, the outside not more than 0m, no more than 0.5, not double the real body structure 5.5 cover hand hole design
5.5.1 more than not more than 125mm, the example of the small hand hole: the outer diameter is not less than three 1500m years, the example of the mark, The manhole should be opened.
QB/T2556—2002
5.5.2 The manhole of the cover should be in the form of a drawing, the short axis of the manhole should be aligned with the cylinder head, and the cover flange stop should be as far away as possible: 5.5.3 The opening part that needs to be opened should adopt a convex integral reinforcement, and its reinforcement should be small.
5.6 Design of the body flange
Figure 5 Connection structure between the body and the cylinder heads at both ends 5. 6.1 The thickness of the new body shall be checked according to formula (4). KWww.bzxZ.net
5.6.2 The design of the bolt shall be less than the total size of the bolt. 5. Check the cylinder head bolts. The material and allowable pressure values of the cylinder head bolts shall be checked according to formula (5). The value of the cylinder head bolts shall be calculated according to formula (4). The value of the cylinder head bolts shall be calculated according to the material and allowable pressure values of the cylinder head bolts. See Table 3 for the calculation of the value of the cylinder head bolts. See Table 3 for the calculation of the value of the cylinder head bolts. 5.8 Check of short shaft neck
The variable stress of each variable diameter section is also calibrated by formula (6). The value obtained by R,L
must be less than or equal to 1.
5.9 When the outer diameter of the equipment is less than 2000mm and the design pressure is 0.5MPa, the test is carried out according to the specified measurement, and the limit element analysis of the material distribution should be placed. The measured stress at the positive and negative parts of the material should not be greater than 2 times the effective stress. %
HKANYKA
Appendix A
(Normative Appendix)
When the working pressure is more than 0.5MPa, the small flange of the drying cylinder cover should be 1250
(Normative Appendix)
When the working pressure is more than 0.5MPa, the small flange of the drying cylinder cover should be 1250
QB/T2556—2002
Qn/T2556-2002|| tt||3660-3Hx7
Time Record C
(Confidential Appendix)
Diameter, number and material of the drying cylinder body and the cylinder connection hook p/Mra
End subtraction number
End control is called this diameter mn:
M2G--M24
HTKAONYKAa=
35CToA
35CMaA|| tt||35Cr04
Red envelope according to external specifications: Dm
Attached edge D
(Scientific pump)
Recommended values of calculated thickness and design thickness of cylinders with different diameters g/haPu
11T250
irr:300
1TT200
TTT250
Err30G
PRT 30G
HET250
QB/T2556-2002
QB/T256—2002
Appendix E
(Informative Appendix)
Red body outer diameter use series
-TKANY KAa=
Yao Medical Department
Tax certificate, baking:300
1TT200
TTT250
Err30G
PRT 30G
HET250
QB/T2556-2002
QB/T256—2002
Appendix E
(Informative Appendix)
Outer diameter of red body Use series
-TKANY KAa=
Yao Medical Department
Tax certificate, baking:300
1TT200
TTT250
Err30G
PRT 30G
HET250
QB/T2556-2002
QB/T256—2002
Appendix E
(Informative Appendix)
Outer diameter of red body Use series
-TKANY KAa=
Yao Medical Department
Tax certificate, baking:
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