A method for detecting the crystal leakage of liquid crystal display screen by low temperature freezing includes the following steps: 1) evenly place the liquid crystal display screen in the tray; 2) put the tray code into the industrial freezer; 3) set the temperature of the industrial freezer to – 35 ℃, freeze for 4… Read more Industrial refrigerator for LCD detection
Tag: industrial freezer
Cold treatment of retained austenite with industrial freezer
With the continuous development of the mechanical industry, the requirements for metal materials are becoming higher and higher. How to improve the mechanical properties and service life of metal workpieces under the premise of material and heat treatment process is becoming a problem that many people at the forefront of heat treatment industry think about… Read more Cold treatment of retained austenite with industrial freezer
Bearing frozen interference fit
The method of bearing freezing interference fit depends on the interference after the assembly of the parts to achieve the tight connection. After assembly, due to the elastic deformation of materials, there is pressure between mating surfaces. Cryogenic assembly is a kind of assembly formula method that uses industrial freezer to cool the parts that… Read more Bearing frozen interference fit
Cold assembly method of bushing parts
The cold assembly of bushing parts used in construction machinery is based on the principle of heat expansion and cold contraction of materials, that is, the bushing is frozen first It is the dimension shrinkage of the bushing (changing the interference fit into clearance fit), and then in the process of assembly, the cold assembly… Read more Cold assembly method of bushing parts
The process of cold charging of industrial freezer
Determine whether the parts are suitable for cold assembly.Whether the physical properties, mechanical properties and metallographic structure of mechanical parts change abnormally at low temperature is the key to choose whether cold assembly can be adopted. The allowable cooling temperature shall be determined according to the change of various properties of the metallographic structure of… Read more The process of cold charging of industrial freezer
The application of cold assembly technology of industrial freezer in machine assembly
With its unique advantages, the cold packaging technology of industrial freezers has been widely used in machine assembly. The cold assembly of industrial freezer is generally used for the case that the material of the containing part and the contained part is different, the mechanical property is different, the hardness of the material is quite… Read more The application of cold assembly technology of industrial freezer in machine assembly
Control method of retained austenite in industrial freezer cold treatment
There are always some retained austenite after quenching. Too much retained austenite is harmful to the service life and hardness of parts, which will cause the instability of soft spot and size. However, a proper amount of retained austenite can improve the fatigue strength of parts. We can control the quality and service life of… Read more Control method of retained austenite in industrial freezer cold treatment
Using industrial freezer to reduce and eliminate the generation of retained austenite after quenching
Martensitic transformation is a kind of cutting deformation core, not depending on diffusion. It’s an incomplete transformation. 1.Austenite must have enough cooling rate at high temperature, so that austenite will not undergo equilibrium decomposition at high temperature. 2.When austenite is cooled to MS point, martensitic transformation will take place, and it is formed by cooling.… Read more Using industrial freezer to reduce and eliminate the generation of retained austenite after quenching
Cold treatment of bearing rings
After the workpiece is quenched and cooled to room temperature, it is immediately placed in an environment lower than room temperature for a certain period of time, and taken out and placed in room temperature. This treatment lower than room temperature is called cold treatment. Industrial freezers are often used for bearing steel cold treatment.… Read more Cold treatment of bearing rings
Prevention of Bearing Deformation in Freezing Assembly of Industrial Freezer
At present, the rolling bearing is refrigerated for 30 min (- 196 ℃) in the industrial freezer before assembly on the motorcycle, and then loaded into the motorcycle. This technology has been widely used in motorcycle industry. Before, motorcycles used imported bearings. In order to realize the localization of imported bearings, our factory produced alternative… Read more Prevention of Bearing Deformation in Freezing Assembly of Industrial Freezer