The weldability of 20Cr alloy steel is poor, and it is not easy to solder at room temperature. Stress annealing should be done immediately after welding of 20Cr
The level of operators is an important factor affecting the quality of 20Cr steel. At the same time, there are many reasons such as equipment, materials and pro
Common welding defects of Q345R steel include appearance defects and internal defects. Appearance defects include undercut, depression, surface pores, cold crac
The methods to reduce welding deformation during welding of Q345R steel mainly include:
1. Reasonable assembly sequence and welding sequence. To correctly selec
In the metal structure, Q345R steel is very easy to produce welding stress and various deformations. Welding stress and deformation directly lead to welding cra
13CrMo44 steel generally has the following characteristics during welding:
1. Hardenability
The hardenability of steel depends on its carbon content and alloy c
At present, the application of low-alloy heat-resistant steels in the petrochemical industry is becoming more and more common, especially Cr-Mo type heat-resist
13CrMo44 steel plate belongs to chrome-molybdenum alloy boiler and pressure vessel steel plate, and the implementation standard of 13CrMo44 steel plate is the s
SA516 steel plate, which is part of the ASTM A516 specification for carbon steel plates used in pressure vessel applications, typically undergoes a heat treatme
ASTM A516 is a specification that covers carbon steel plates used for pressure vessel applications. It includes several different grades, each designed to meet
Both 16MnDR and Q345R belong to the national standard container plate. Generally speaking, 16MnDR and Q345R are named according to the purpose of the steel plat
Q345R steel is a low-alloy high-strength structural steel. It is currently the most widely used and used steel for pressure vessels in my country. It has good c
1. High carbon
The carbon content of Q345R steel is very high, generally 0.95-1.15, which belongs to hypereutectoid steel. A part exists in the martensite matri
The main factors affecting the toughness of the weld for AH36 Steel are: the chemical composition of the base metal, the plate thickness, the welding method of
The key performance index of AH36 steel plate is the low temperature impact toughness of AH36 steel plate, which requires the impact energy at -20°C to be g
The essence of the controlled rolling and controlled cooling process of AH36 Steel is to combine deformation and heat treatment. Its main purpose is to refine t
After the quenching and tempering treatment of 50CrMo4 steel, the inspectors found several small crack defects when visually inspecting the surface quality of 5
Gas in steel is a general term for gases such as oxygen, nitrogen, and hydrogen in the medium absorbed by steel during smelting, welding, or chemical and electr
Casting Technology
There are two mainstream methods for 50CrMo4 smelting and casting, one is electric arc furnace smelting, secondary refining and vacuum degass
The grades of S420MC and QSTE420TM are similar, even in some steel plants, they can be used in common. Both S420MC and QSTE420TM require good cold forming perfo
QStE380TM is a low alloy steel with a series of excellent physical and chemical properties, widely used in the manufacture of automobiles, construction machiner
The cold rolling of QSTE420TM steel usually adopts longitudinal rolling, and the production process of cold rolling generally includes raw material preparation,
Q460D belongs to low-alloy high-strength structural steel, and Q460D can also be called low-temperature-resistant high-strength steel with a yield strength of 6
According to the properties of Q460D steel, the author summarizes the following key points of the welding process:
1.Preheating work. The structural parts of th
In order to obtain good mechanical properties, many high-strength steels use a combination of multiple heat treatment methods. For Q460D steel, the suitable hea
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