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How to calculate the wave node number of expansion joint

The expansion has been calculated: Expansion = total thermal expansion length x temperature difference x safety factor x expansion coefficient How to calculate the wave node number of expansion joint according to the expansion amount? According to the expansion, the wave number of the corrugated compensator is calculated. According to the wave height and wave distance of each manufacturer, the wave number is uncertain. How to calculate the weight of expansion joint? The pressure and compensation of the expansion joint are different, and the weight will be different. The factory can calculate the theoretical weight according to the specific parameters […]

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What is a sputtering target

What is a sputtering target? Sputtering target: the source material of sputtering film preparation, also known as sputtering target, especially the high purity sputtering target, which is used in the physical vapor deposition (PVD) process of electronic components manufacturing, is the key material for the preparation of wafer, panel, solar cell and other surface electronic thin films. In vacuum state, the solid surface is bombarded with accelerated ions, and the ions exchange momentum with the atoms on the solid surface, so that the atoms on the solid surface leave the solid and deposit on the substrate surface to form the […]

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Technical requirements of bend and analysis of factors affecting bend quality

The pipe bend is bent by complete set of bending equipment, which is divided into two processes: cold simmer and hot push. No matter what kind of machinery, equipment, pipeline, most of the pipe bend, mainly used for oil, gas, infusion, engineering bridge construction, etc.. Pipe bend is produced step by step, and then made into finished products, in the whole production process, because of the requirements of the pipe must be bent, and the bending of the pipe to have some technology, the degree of bending is not the same, so in the whole production process used in the […]

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Tantalum Product Range

What is tantalum Tantalum is a metal element with atomic number 73 and chemical symbol TA. The element corresponds to steel gray metal, which has high corrosion resistance. It does not react with hydrochloric acid, concentrated nitric acid and aqua regia under cold and hot conditions. Tantalum mainly exists in tantalite and coexists with niobium. Tantalum has moderate hardness and ductility, and can be drawn into thin foil. Its coefficient of thermal expansion is very small. Tantalum has excellent chemical properties and high corrosion resistance. It can also be used as electrode, rectifier and electrolytic capacitor of electron tube. Medically, […]

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What is a quick closing valve

What is a quick closing valve? Quick closing valve, also known as the main steam valve, is the main closing mechanism between the main steam pipeline and the steam turbine. In case of emergency, the steam inlet of the steam turbine is cut off to make the unit shut down quickly, so as to achieve the purpose of protecting the unit. The quick closing valve consists of valve body and oil cylinder. In the process of operation, the quick closing valve keeps open through quick closing oil to overcome the resistance of spring. When the quick closing oil loses pressure, […]

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What are the factors that affect the price of flange?

Flange is an essential part of pipe design, pipe fittings and valves, and also a component used in equipment and equipment components (such as manhole, observation hole, liquid level gauge, etc.). We also know that flange is divided into standard flange and non-standard flange. The national standard flange is processed according to the national flange production standard. The outer diameter, screw hole and thickness of flange are fixed, but in the actual flange production process, many companies will customize the flange (non-standard flange), so is the price of customized flange expensive? To understand the price of flange, you must first […]

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Do you know the difference between hot pressing elbow and stamping elbow?

Elbow is a kind of pipe fittings used at the turning of the pipe. Hot push, stamping, extrusion and other processes are commonly used in the forming process of seamless elbow. Do you know the difference between hot pressing elbow and stamping elbow? Forming technology of elbow Hot push forming technology of elbow The forming process of hot push elbow is a process in which special elbow pusher, core die and heating device are used to make the blank set on the die move forward under the push of the pusher, and is heated, expanded and bent during the movement. […]

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Machinability test of metal

Metal bending test Metal bending test is a test that the bending center of the specified size is used to bend the specimen to the specified degree, and to test the metal’s ability to withstand bending plastic deformation and show its defects. Metal bending tests can be performed at room temperature (cold bending test) or hot state (hot bending test). The size and shape of the specimen shall be determined according to the type of metal material according to the relevant standards. Bending test can be carried out on press, special testing machine, universal testing machine or round mouth vice […]

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Matters needing attention in engineering application of API 660-2015

Precautions for engineering application: 1.4.2 TEMA R is generally used if there is no special case. TEMA heat exchanger is divided into TEMA RCB, class R refers to petroleum and process industry applications, class C refers to commercial and general process applications, and class B refers to chemical industry applications. Generally speaking, R needs the minimum thickness and the thickest, which is the most expensive. 2.4.1 for single pass floating head heat exchanger and all fixed tubesheet heat exchangers, the purchaser shall indicate the data required to determine the expansion joint. These data can be filled in according to Appendix […]

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Update for TEMA 2019

Update for TEMA 2019 TEMA has updated the version 2019 (Tenth Edition) in 2019. It has been 12 years since the 2007 edition to 2019. Many friends are curious about what the changes are? This article will introduce the new update content of TEMA to you. Please point out the omissions. The main updates of the 2019 edition are as follows: New content: Numerical analysis of adding expansion joint (one dimensional FEA); Design rules of horizontal saddle; Dimension data of flange; Guide and configuration of shell side inlet distribution section; Research on the design of reducing scaling; Guide for expansion […]

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