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Control of retained austenite in tooth angle by vacuum carburizing heat treatment
Retained austenite (Ar) refers to austenite that does not undergo martensitic transformation under a certain degree of undercooling. The amount of retained austenite, the range of martensitic transformation start temperature (Ms ) and end temperature (Mf ) relative to room temperature, the chemi...
Vacuum brazing of surgical forceps – heat treatment process
The needle holder is a surgical instrument used for holding suture needles and knotting. The working end needs to be inlaid with cemented carbide by inlay technology to obtain better wear resistance, anti-skid performance and easy maintenance and replacement. In recent years, the vacuum brazing h...
Tips for vacuum brazing problem
a) The product is not melted 1.Phenomenon and reasons: It refers to the fact that a small part of the product in the furnace is not melted during the normal process of brazing, which is called the product is not melted. 2.Solution: Unmelted products mainly include: (1) The operator’s door ...
Research on Vacuum Heat Treatment Technology of Cr12 Steel
Cr12 steel is one of the widely used cold work die steels. The steel has the advantages of good hardenability, high hardness, wear resistance, and small heat treatment deformation. It is often used to make cold work dies that bear heavy loads, large production batches and complex shapes, such as ...
Vacuum heat treatment of 3Cr2W8V steel-aluminum die-casting mold
Die casting is the abbreviation of pressure casting. It is a method of filling liquid or semi-liquid metal in the die-casting mold cavity at high speed under high pressure, and rapidly solidifying under pressure to obtain castings. The die-casting mold used is called a die-casting mold. The commo...
Vacuum Annealing Heat Treatment of Metal Coronary Stents
The vacuum annealing heat treatment of metal coronary stents is a key process and a special process in its manufacturing process. The performance of metal coronary stents can be optimized by vacuum annealing heat treatment, including reducing the tensile strength and hardness of the material, inc...
Failure analysis of vacuum sintered die-bonding chip peeling off
In the production and processing of military electronic components, sometimes due to the abnormality of the chip back gold process, defects in the die bonding process during the packaging process may occur, resulting in abnormal chip bonding performance and reduced packaging yield. For a certain ...
Influence of brazing filler metal on vacuum brazing of titanium alloys
Brazing of titanium alloys has the advantages of small deformation, high precision and good mechanical properties, but brazing of titanium alloys is also prone to form intermetallic compounds, resulting in low fatigue resistance and impact strength of joints. Therefore, the selection of suitable ...
Vacuum heat treatment control of machining deformation of engine cast titanium casing
ZT3 and ZT4 alloys have good comprehensive properties, and the working temperature can reach 500 ℃ and 350 ℃ respectively. They can be used for engine compressor parts and aircraft structural parts. They are cast titanium alloys widely used in the aviation industry. It is used to manufacture the ...
Vacuum heat treatment of slender hollow parts
During the trial production stage of product development, key parts processing problems are often encountered. Especially for parts with complex shapes, the deformation law of heat treatment is difficult to control. After finishing and forming, the salt bath heat treatment method is used. After h...