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Characteristics and Classification of Brazing Furnace
1. Features The brazing furnace has precise and reasonable heating furnace partitions, high-precision advanced temperature control instrument hardware selection and software parameter adjustment, the furnace temperature control accuracy is extremely high (±1℃), and the temperature uniformity of t...
What is the Structure and Working Principle of the Air Cooling Island of the Brazing Furnace?
The brazing of the air-cooled island radiator brazing in the brazing furnace uses air as a cooling medium to cool the generator stator and rotor windings and the stator core.\ The so-called “air-cooling island” is actually an image term for the air cooling device of a power plant, whi...
Vacuum Repair Welding Process
1. Cleaning the workpiece to be repaired. For casting cracks, welding cracks or quenching cracks of new parts, the surface is usually polished with a fine emery cloth and then cleaned with alcohol or acetone. For iron and cobalt-based superalloy cracks, generally, only surface degreasing, sandbl...
Vacuum Brazing Process For High-pressure Turbine Blades
The high-pressure one-stage turbine blades for aero-engines are made of nickel-based casting alloys K38G and CH3030. It is required to braze a cover plate to restrict the cooling air flow on the blade crown. The brazing filler metal is BNi79CrSiBCo adhesive tape brazing filler metal with a thick...
What is Heat Treatment?
1. Quenching The main purpose of the quenching treatment is to rapidly cool the steel material in order to obtain a very hard Asada bulk structure. There are three essential elements for the quenching treatment of steel, one of which is indispensable. They are: heating in the austenitic area for ...
Heat Treatment Stress And Influence
Heat treatment residual force refers to the residual stress of the workpiece after heat treatment, which has an extremely important influence on the shape, size and performance of the workpiece. When it exceeds the yield strength of the material, it will cause deformation of the workpiece, and wh...
Tempering Transformation and Structure of Quenched Steel
When the quenched carbon steel is tempered, with the increase of the tempering temperature and the extension of the tempering time, the following transformations will occur accordingly. 1. Segregation of carbon in martensite When tempering at a very low temperature below 80°C, it is difficult fo...
Complete Annealing Process For Steel
Complete annealing is to heat the steel or steel to Ac3 or more, and hold it for a long time enough to make the structure completely austenitized and then slowly cool it to obtain a heat treatment process that is close to the equilibrium structure. It is mainly used for hypoeutectoid steel (wc=0....
Materials Used For Hot Forging Dies
1. Has been included in the national standard hot work die steel The hot work die steel series has been included in the national standard “GB/T1299-2000 alloy tool steel”, and can be divided into W series, Cr-Mo series, Cr-W-Mo series and other types according to the main chemical com...
Metal Hardness Test Method
The hardness of a metal refers to the resistance to plastic deformation caused by the intrusion of foreign objects in a local volume of the metal surface. The higher the hardness, the stronger the resistance of the metal to plastic deformation, and the more difficult it is for the metal to produc...