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Cause analysis on Corrosion of 2507 duplex stainless steel potash evaporation ……

Taking the actual use of evaporation tank in two projects designed by a certain institute as the starting point, the causes of corrosion cracking of 2507 duplex stainless steel equipment were analyzed from the use environment and manufacturing process of 2507 duplex stainless steel equipment, and then how to avoid corrosion of duplex stainless steel equipment in the process of design, manufacture and use was discussed. The results show that the service environment and manufacturing process of duplex stainless steel evaporation tank have great influence on its corrosion resistance, especially when there are welding defects and stress concentration caused by […]

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What are the quality management measures for pressure vessel manufacturing mat……

Reasonable selection, proper storage and correct use of manufacturing materials are the premise and foundation to ensure the quality of pressure vessel products. In this paper, the material quality management of pressure vessel manufacturing is discussed in order to provide some reference for colleagues in the industry. As a kind of special pressure equipment, pressure vessel has been widely used in petrochemical, energy, scientific research and military industry. Its quality is directly related to the production safety of these industrial fields, so it must be paid full attention. In order to ensure the manufacturing quality of pressure vessels, the first […]

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Precautions for pressure vessel design

Pressure vessel: refers to the closed equipment that contains gas or liquid and carries a certain pressure. Its scope is defined as the fixed vessel and mobile vessel that the maximum working pressure is greater than or equal to 0.1MPa (gauge pressure), and the product of pressure and volume is greater than or equal to 2.5MPa · L, and the maximum working temperature is higher than or equal to the standard boiling point. Structure of pressure vessel: 1. Single layer type; 2. Multi layer type: high safety, but many production processes, low labor productivity; 3. Plate winding: it is not […]

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Introduction to the basic structure of pressure vessel

Pressure vessel is usually a welded structure composed of plates and shells. Among the pressure components, the shells corresponding to the cylindrical cylinder, spherical tank (or spherical head), elliptical head, dished head, spherical crown head, conical head and expansion joint are respectively cylindrical shell, spherical shell, ellipsoidal shell, spherical crown + ring shell, spherical crown, conical shell and annular plate + ring shell. The flat cover (or flat head), annular plate, flange, tube plate and other pressure components respectively correspond to the circular plate, annular plate (the difference between the outer radius and the inner radius is greater than 10 […]

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Stainless steel barrels make wines richer and more mellow

With the growth of the world’s population, the global consumption of wine has reached an all-time high. In recent years, the annual per capita consumption of pure alcohol is about 4.3-4.7 liters. The consumption of hard alcohol accounts for about half of the total, beer accounts for 35%, and wine accounts for 8%. Although alcoholic beverages and their production processes vary widely, they are inseparable from the special production equipment for sanitation. There are many kinds of raw materials for wine production. The raw material of the wine is grapes, the raw material of Japanese sake is rice, and the […]

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Common problems and analysis in the manufacture of pressure vessels

The pressure vessel is a special precision instrument widely used in industrial, agricultural and other production, with a wide variety, complicated process and technology. The safety during use affects the entire industrial or agricultural area. At this stage, there are some problems in the manufacturing process of pressure vessels. This paper briefly describes several common problems and analyzes them. Since the beginning of the 21st century, with the rapid development of China’s economy and the improvement of science and technology, China’s pressure vessels have greatly improved from design to manufacturing and maintenance, ranking among the best in the world. In […]

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What is a liquid mixing tank?

What is a liquid mixing tank? The liquid mixing tank, also known as mixing tank and mixing tank, has the advantages of energy saving, corrosion resistance, strong production capacity, convenient cleaning and simple structure. It is mainly used for mixing milk and sugar and other elements and various drugs. The role is indispensable equipment for dairy, beverage and pharmaceutical plants. Classification Technical Parameters Structure Technical requirements Use of liquid tank Operating procedure Characteristics Use and maintenance 1. The liquid tank classification According to the structure form, it is divided into: upper open cover, downward bottom, upper open cover, lower conical […]

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Common defects and treatment methods for pressure vessels

Pressure vessels in chemical plants often encounter defects such as corrosion, cracks and deformation. Operators must conduct regular technical inspections to eliminate hidden dangers as early as possible to prevent defects from continuing to develop and affect production. 1 Corrosion Corrosion is one of the most prone to defects in the use of pressure vessels, especially in chemical containers. It is caused by chemical or electrochemical changes in the metal and the medium it is in contact with. The corrosion of the corrosive type container may be uniform corrosion, pitting corrosion, intergranular corrosion, stress corrosion, and fatigue corrosion. Regardless of the […]

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What are the Differences Between Sanitary Pipe Fittings and Stainless Steel Pi……

What are sanitary pipe fittings? Sanitary pipe fittings are mostly used in the control of materials that are dry and bulky. Some of these materials are used in the cosmetic, pharmaceuticals, food, biotechnology and chemical industries. The fittings are usually designed to meet the stringent requirements in these industries. To control the flow of solid materials, the fitting design should be easy to detach, to disassemble and to clean thoroughly. This calls for fittings whose design is specifically made to these stringent sanitary requirements. The design of the sanitary fittings can be varied according to its intended purpose. Some designs may […]

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Automatic extraction and slagging system

Automatic extraction and slagging system composition The multifunctional extracting tank device is composed of a multifunctional extraction tank, a condenser, a cooler, a filter and a pneumatic control system of slagging outlet. Multifunctional extraction tank has several structures–positive conical type extraction tank, mushroom type extraction tank, straight cylinder type extraction tank, tapered extraction tank, inverted conical type extraction tank. Whether there is Agitator, it can be divided into dynamic extraction tank and static extraction tank. The material-contacting part of the tank is made of stainless steel, with good corrosion resistance fully meeting the GMP standard. Application Suitable for dynamic extraction […]

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