low pressure vacuum carburizing furnace and traditional carburizing furnace

Comparison of the main advantages and characteristics of low pressure vacuum carburizing furnace and traditional carburizing furnace

For a more comprehensive grasp and understanding, the main advantages and characteristics of the low-pressure vacuum carburizing furnace and the traditional carburizing furnace are compared.

The temperature of the conventional carburizing process is affected by the performance of the furnace, and the maximum operating temperature is limited to 950°C. However, the improvement of vacuum carburizing furnace technology can increase the maximum operating temperature to 1050°C. Since the diffusion coefficient of carbon during carburizing increases with the increase in temperature, the carburizing speed can be greatly increased, so that the time to obtain the same carburizing depth is greatly shortened, which is beneficial to improve production efficiency and reduce production costs. The increase in the use temperature of low-pressure vacuum carburizing provides a prerequisite for improving production efficiency. For this reason, under the condition of not affecting the mechanical properties of the parts, the use of a higher carburizing temperature can significantly increase the carburizing speed.

AISI8620 steel is used to make heavy-duty transmission gears, and the comparison of conventional carburizing and vacuum carburizing at the same temperature to achieve the same effective hardened layer depth test shows that in order to achieve the same carburizing hardening depth, not only vacuum carburizing saves 74 minutes than conventional carburizing (The production cycle is only 82% of the conventional), and the surface of the gear can still maintain the metal color after vacuum carburizing and gas quenching, no internal oxidation occurs, and the deformation is greatly reduced, which saves the difficulty and Time, quality level and reliability of use have doubled (it is understood that the current high-end gearbox gears in the automotive industry require low-pressure vacuum carburizing technology to be produced). Some people compare the carburizing time of heavy-duty truck gears with a carburizing depth greater than 1.60mm. The total carburizing time of low-pressure vacuum carburizing is only 385min, while the total carburizing time of continuous controllable carburizing furnace requires 12h. The former is produced The cycle is only 50% of the latter. This shows that under the premise of improving carburizing quality, the actual production cycle is shortened very obviously.

A large amount of test data proves that the excellent results obtained by the low-pressure carburizing process technology have been accepted by the majority of users, especially the problem of poor deep carburizing quality (the generation of network carbides during long-term carburizing) that is difficult to solve by conventional carburizing. The actual carburizing time of vacuum carburizing is greatly reduced, and its superiority is very significant.

Someone compares vacuum carburizing and conventional carburizing to obtain the same effective hardened layer of carburizing. Comparison of vacuum carburizing and conventional carburizing to obtain the same effective hardened layer of carburized, a large number of carburized gear comparisons found that the high hardening zone of the low-pressure vacuum carburized layer can generally reach more than twice that of conventional carburizing, SIMUWU grid Air Vacuum believes that this feature has the guarantee that the gear can maintain a considerable effective hardened layer after carburization and need to be ground. In addition, low-pressure vacuum carburizing avoids the generation of internal oxidation, and the quality of the carburized layer is more excellent, which provides a guarantee for the reliability and long life of the gear.

Learn More : Vacuum Carburizing Furnace