For people not knowing too much about flanges, they are actually a common disc-shaped part that helps connect pipes, equipment, etc. Due to their excellent connection performance, flanges have been rapidly promoted and used in many places. But many people still have a lot of questions about them. So,...
Hydrogen embrittlement, also known as hydrogen-induced cracking, is one of the major defects in large forgings and occurs mostly in medium-carbon alloy steel forgings (martensitic steel and pearlitic steel). The larger the forging size, the easier the hydrogen embrittlement is formed. Special care should...
2. Technical requirements for shape, size and surface condition of flange forgings Based on reliable raw material quality, one of the tasks of flange forging processing is to obtain the required shape, size and surface condition to meet the requirements of parts design, processing and use conditions....
Mechanical property The mechanical properties of raw materials include properties at room temperature and high temperature, such as strength index, plasticity index, impact toughness, hardness, fracture toughness, permanent strength, fatigue properties, stress corrosion resistance, etc., which should...
The use conditions of flanges refer to the importance, working conditions, assembly and disassembly difficulty, complexity of them, as well as force, working temperature, corrosion degree, and other factors. From the basic principle that the forging is to serve and meet the use conditions of the...
In order to ensure that the flange forgings have the dimensional accuracy and mechanical properties required by the design, the quality of the forgings must be controlled, that is, the entire production process from selecting raw materials to post-forging heat treatment must be controlled to ensure...
Most of the time, plastic processing of metal forgings is a series of processes that a simple-shape blank turns into the final product with required shape and size via plastic deformation. Good metal plasticity facilitates plastic forming, and from the angle of plastic processing, the main ways to improve...
Oxidation is a phenomenon in which a flange forging blank (metal raw material) chemically reacts with an oxidizing gas in the heating process, forming an oxide skin on the metal surface of the forging. For example, when steel is heated to a high temperature, ferrum on the surface layer reacts with oxygen,...
Pressure vessel flanges are common and basic components that connect various parts of pressure vessel. They are widely used in petrochemical, electric power, atomic power, and other industries. For vessels, the function of flanges, gaskets, connecting bolts, studs, screws is to combine different pressure...