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Problems in the design and installation of chemical pipelines analyzed

The article mainly discusses the design and installation of pipelines in the field of chemical engineering, analyzes the problems existing therein, and puts forward corresponding solution measures. With the continuous development of China’s social and economic development and the increasing progress of science and technology, the chemical industry development space is also larger and larger, and pipeline engineering is an important field in the chemical industry; pipeline design and installation directly affect the quality of chemical engineering. This paper briefly analyzes the common problems in the design or installation site and puts forward corresponding measures for these problems. 1. Chemical […]

2023-09-01

CNC machining technology of Large thin-walled hydraulic forged cylinder

For the thin-walled hydraulic forged cylinder CNC machining process focus and difficulties, respectively, from the machining method, cutting parameter optimization, tool selection, clamping, equipment selection, deformation control, etc., three types of typical parts features of the machining process for in-depth systematic analysis, and were proposed to solve the measures. After the actual processing verification, it eliminates the machining chatter phenomenon, improves tool durability, and ensures the parts’ surface quality and accuracy requirements. 1. Introduction Cylinder bore and wall thickness ratio D/δ ≥ 16 for thin-walled cylinder. Most of the cylinders at all levels of the vertical hydraulic forged cylinders in […]

2023-08-02

Research on the Manufacturing Process and Various Properties of Red Ring Forgi……

This article elaborates on the red sleeve ring forgings manufacturing process for the high-pressure inner cylinder of ultra-supercritical steam turbines. The tensile properties, impact properties, grain size, inclusions, and other properties of the forgings in different parts were measured through anatomical tests. The results show that the manufacturing process of the forging is complete and reliable, and the various properties of the forging are excellent, especially the uniformity is very good, achieving the goal of localization. 0. Introduction When the main steam pressure of the ultra supercritical steam turbine reaches over 28MPa, the traditional flange structure can no longer meet […]

2023-07-01

Integral Forging Method for Nozzle Connecting Section on Barrel Flange of Modu……

Through numerical simulation and actual production experiments, the overall forging process for the flange connecting the pipe section of the reactor pressure vessel shell was determined, and process analysis and trial production research were carried out. The results indicate that the geometric dimensions and mechanical properties of the forgings meet the requirements. The national energy strategic development plan for the 14th Five Year Plan clearly states that China will still actively, safely, and orderly promote the development of nuclear power during the 14th Five Year Plan period. According to the road map of stability and safety, China has proposed a […]

2023-06-01

Research on the Forging Process of Large Shaft Forgings with Intermediate Flange

Introduced the forging process of large shaft forgings with intermediate flanges. A new forging process was determined by designing different forging processes and using the finite element method for numerical simulation analysis and comparison, and good results were achieved. 1. Question raising Large shaft forgings with intermediate flanges are one of the main forgings of certain equipment. Figure 1 shows the rough machined shape of the movable trunnion, which is mainly characterized by a flange in the middle. This article uses the forging shown in Figure 1 as an example to study the process. In the previous production, the forging […]

2023-05-01

Optimization of Forming Scheme for 1Cr17Ni2 Stainless Steel Bolt Forgings for ……

To solve the problems of poor surface quality, multiple forging processes, and low die life of 1Cr17Ni2 stainless steel bolt forgings for aircraft, the forging process of 1Cr17Ni2 stainless steel bolt forgings for aircraft was studied based on DEFROM numerical simulation software. The results show that by increasing pre-forging, the wear of the forging on the final forging cavity is reduced, and the service life of the die is improved. Using a holding and cutting die for edge cutting ensures the quality of edge cutting, and one-time forging is achieved. The trial production results using the optimized process are in […]

2023-04-01

Experimental study of roll forming of weld neck flanges

A roll forming situation of a weld neck flange is introduced. Through the test rolling of several flange blanks, it is concluded that the flange is challenging to roll forming. Still, it provides a solid basis for the combination of casting and rolling creating to improve the quality of the flange. The method can be used as a reference for the new process of manufacturing weld neck flanges. Flanges are widely used as pipe coupling parts. The flange is generally produced by casting molding or forging punching. Casting flange internal organization is loose and uneven, strength and quality are difficult […]

2023-03-02

Probe into the selection of thin-walled stainless steel pipes fittings and sta……

Based on the analysis of the product characteristics of stainless steel pipes, this paper comprehensively analyzes the matters needing attention in the selection of thin-walled stainless steel pipes and pipe fittings. At the same time, it deeply analyzes the domestic development prospects of thin-walled stainless steel materials and the technical problems that need to be solved in the development process. Thin-walled stainless steel pipe and stainless steel pipe fittings as one of the important products of the development of modern material science, because of its own beautiful appearance, and corrosion resistance and durability have greater advantages, belonging to the energy-saving […]

2023-02-02

Turning and Fixture Design of Flange Parts

In the manufacturing industry of electronic communication equipment, small flange parts are widely used. The traditional single-acting chuck is used for clamping and turning, which is not only inefficient, but also easy to damage the surface of parts. This paper optimizes the processing technology of flange parts by designing the lathe fixture, and improves the processing efficiency and quality of flange parts. 1. Asking questions In the field of electronic communication, small-size flange-type parts are widely used. The structure of a flange part is shown in Figure 1. The flange part is mainly composed of a square base and a […]

2023-01-28

Causes of puncture and leakage of blind flange of butane storage tank

There are 8 tanks in the butane plant of the natural gas treatment plant. The tank bottom is 5m high from the ground and of the same size, belonging to the pressure vessel. The storage medium is mixed butane (mixture of n-butane and isobutane) and isobutane (product), which was put into use in March 2008, and is a recycled pressure vessel. The tank parameters are as follows: Inner diameter of tank body: 2400mm; Tank length: 11542mm; Tank volume: 49.50m3; Design pressure: 1.58MPa; Blind flange size: DN50. In October 2008, the whole plant was shut down for internal and external inspection […]

2023-01-10

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Problems in the design and installation of chemical pipelines analyzed

CNC machining technology of Large thin-walled hydraulic forged cylinder

Research on the Manufacturing Process and Various Properties of Red Ring Forgi……

Integral Forging Method for Nozzle Connecting Section on Barrel Flange of Modu……

Research on the Forging Process of Large Shaft Forgings with Intermediate Flange

Optimization of Forming Scheme for 1Cr17Ni2 Stainless Steel Bolt Forgings for ……

Experimental study of roll forming of weld neck flanges

Probe into the selection of thin-walled stainless steel pipes fittings and sta……

Turning and Fixture Design of Flange Parts

Causes of puncture and leakage of blind flange of butane storage tank