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The influence of the thickness of the dividing plate on the thickness of the f……

Does the thickness of the dividing plate affect the thickness of the flange? My friend has a question: Hello Yane, if you have any questions, please feel free to ask: In the calculation of the Sw6 pipe box flange, when the cross-sectional area of the partition is inputted as a sample, the thickness of the partition varies, which affects the calculated values of Wa and Wp. However, there is no partition thickness parameter in the Wa and Wp formulas. How did the program convert it into this parameter? Reply: The small value is the result calculated for 16 thick partitions, […]

2024-05-01 read more...
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Selection of European standard flanges

Are there any other flange standards in the EU besides EN 1092? Yes, there is also a flange that is basically equivalent to ASME B16.5, which is EN1759! The EU’s large enterprises are currently in the stage of strongly promoting EN13445; Equipment exported to Europe and owned by large enterprises in the European Union often requires design according to EN13445. The standard for flanges is sometimes EN 1092, and sometimes ASME B16.5 is written directly. However, neither the ASME BPVC standard nor the EN 13445 standard can directly accept standards from other regions. Even if the owner agrees, you still […]

2024-04-01 read more...
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Calculation of flange weight

The calculation of flange weight is crucial for determining material requirements, manufacturing costs, and subsequent installation processes. Below are the steps and corresponding calculations for determining the weight of plate flanges and weld neck flanges based on their geometric characteristics: Weight Calculation of Plate Flanges To calculate the weight of plate flanges, consider the following parameters: Outside Diameter (A1) Inside Diameter (B1) Sheet Thickness (C) Number of Drill Holes (D1) Drill Hole Diameter (C1) The weight of the plate flange can be calculated by determining the volume of the flange and then multiplying it by the material’s density. The formula […]

2024-03-01 read more...
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A kind of shaft forgings upsetting molding process design

A kind of shaft forgings upsetting forming process design, including forming analysis, process program determination, forming test and so on. This can provide a reference for other shaft forging process designs. Figure 1 shows a kind of shaft forging; the material is 8620H, equivalent to domestic grade 20CrNiMo. The original process is to use a quasi-90 (size unit mm, the same as below) extrusion bar directly for turning to process; processing time is long, a waste of materials, and high production costs. Suppose we use the upsetting process to form. In that case, the deformation area in the head only […]

2024-02-01 read more...
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Research and Application of the Honing Mechanism of Hydraulic Cylinder Barrel

The honing process of the hydraulic cylinder barrel is achieved by applying a certain pressure between the oilstone and the surface of the hydraulic cylinder barrel and achieving a predetermined composite motion between the oilstone and the surface of the hydraulic cylinder barrel with an appropriate cutting amount, in order to machine a hydraulic cylinder barrel surface with high geometric accuracy and good surface quality. 1. Technical requirements for hydraulic cylinder heads The hydraulic cylinder is the main component of the power slide, and its main technical requirements are shown in Figure 1. The inner hole diameter is 100mm, the […]

2024-01-01 read more...
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Stress analysis of 45° forged lateral tee

The 45° forged lateral tee is commonly used in the convergence of superheated steam and reheat steam piping, and the stress situation is complicated. The stress situation of the 45° forged lateral tee of the reheat steam pipe of a 660MW supercritical boiler is calculated by the finite element method, and the design of the 45° lateral tee is optimized for comparison. The main steam and reheat steam of large-capacity, high-parameter boilers are mostly led out bilaterally, and it is necessary to utilize the tee to converge the steam conduits to one place. 45° lateral tee is used in increasing […]

2023-12-01 read more...
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Demagnetization technology for thick walled alloy steel pipes after magnetic i……

Based on the characteristics of thick walled alloy steel pipes in eddy current and magnetic flux leakage non-destructive testing, the reason for residual magnetism in the testing process of thick walled alloy steel pipes was analyzed. A new demagnetization method is proposed for alloy materials that are difficult to demagnetize. In practical application, the problem of demagnetization difficulty in non-destructive testing of thick walled alloy steel pipes has been solved, and the effect is obvious. In eddy current and magnetic flux leakage non-destructive testing, it is necessary to add a magnetic field to magnetize the steel pipe due to testing […]

2023-11-01 read more...
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Research on variable parameter drilling technology for deep holes in nickel ba……

Nickel based alloys are often used as isolation layers in chemical equipment due to their excellent corrosion resistance in oxidation and reduction environments. Due to their extremely high hardness, Nickel-based alloys are also quite difficult in mechanical processing engineering. By studying deep hole drilling and processing of nickel based alloy tube sheet holes, a multi-stage and variable parameter mechanical processing process is adopted to improve the drilling efficiency of deep hole drilling, save production costs, and reduce processing cycles. 0. Introduction To improve corrosion resistance, large petrochemical pressure vessel tube sheets are often welded with nickel based alloys, such as […]

2023-10-01 read more...
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Research on strength checking calculation method of reducer

The reducer is an important steam and water piping component in power station boilers. The design calculation and strength checking methods of steel plate welded reducers in three standards of China, the United States, and Europe are comparatively analyzed, and the local stress distribution of reducers is analyzed by finite element calculation. The results show that for the wall thickness calculation of the reducer, the calculation methods of different standards are very similar. The difference in the calculation results is very small. Still, for the strength checking of the connection between the reducer and the straight pipe, the difference in […]

2023-09-01 read more...
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Quality control in hydraulic forged cylinder barrel machining process

Introduced several kinds of hydraulic forged cylinder barrel machining processes, and the main factors affecting the quality of each machining process were analyzed and put forward to improve the quality of the processing of specific measures. At the same time, the forged cylinder bore of several commonly used machining processes for comparison pointed out the advantages and disadvantages of each and the scope of application. 0. Introduction The hydraulic forged cylinder is one of the important parts commonly used in modern engineering machinery and other equipment, the processing of the production process of the forged cylinder is an important component […]

2023-08-02 read more...