Vacuum hot pressing sintering furnaces and conventional sintering furnaces are two commonly used sintering equipment, which have certain differences in process and performance. Below, I will introduce the characteristics and differences of these two types of sintering furnaces in detail.

　　First, from the equipment structure point of view, the design of vacuum hot pressing sintering furnace and conventional sintering furnace is different. Vacuum hot pressing sintering furnaces usually consist of furnace cavity, heating element, vacuum system and pressure system. Conventional sintering furnaces generally only have furnace cavity and heating element, without vacuum and pressure system.

　　Secondly, from the process flow point of view, the process of vacuum hot pressing sintering furnace and conventional sintering furnace is slightly different. In the vacuum hot pressing sintering furnace, the pressed granular material is first placed in the furnace cavity, and then the gas inside the furnace cavity is evacuated by vacuuming to form a nearly gas-free vacuum environment. Next, the material is heated by external heating elements to reach a certain temperature. At the same time, hot pressing can be carried out during heating, that is, a certain pressure is applied to increase the density of the material. In conventional sintering furnaces, there is no need to establish a vacuum environment during heating, and there is no hot pressing process. Just put the material into the furnace cavity and heat it until sintering.

　　Thirdly, from the sintering effect point of view, vacuum hot pressing sintering furnace has higher sintering quality and lower porosity than conventional sintering furnace. Because there is no gas in the vacuum environment, it can ensure that the pores inside the granular material are effectively discharged, thereby improving the density and strength of the material. At the same time, the hot pressure applied during heating can make the granular material more closely bonded together, reducing the gap between particles and further improving the density of the material.

　　In addition, vacuum hot pressing sintering furnaces can also carry out gas-protected sintering, which is another important difference between it and conventional sintering furnaces. In vacuum hot pressing sintering furnaces, a certain gas, such as argon or hydrogen, can be introduced into the furnace cavity for sintering in a vacuum environment. This can avoid the oxidation reaction of the material with oxygen at high temperature, thereby reducing the oxidation loss of the material during sintering.

　　In general, vacuum hot pressing sintering furnaces have higher sintering quality and lower porosity than conventional sintering furnaces. Its main characteristics lie in the difference in equipment structure, the difference in process flow, and the improvement of sintering effect. In the preparation of many materials, vacuum hot pressing sintering furnace is a very important tool and equipment, which can ensure that the quality and performance of the materials meet higher requirements.

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