No matter what type of vacuum sintering furnace, if there is no regular maintenance and repair, then the service life of the vacuum sintering furnace must not be long, or even accelerate. So do a good job of vacuum sintering furnace maintenance work, vacuum sintering furnace users need to pay attention to the place, but also must do a good job. Zhongyi vacuum sintering furnace manufacturer tell you then how to extend the service life of high temperature vacuum sintering furnace? How to carry out maintenance of high temperature vacuum sintering furnace?
How to extend the service life of high temperature vacuum sintering furnace?
1, the appropriate environmental humidity
The relative humidity of the experimental furnace and controller shall not exceed 85%, and there shall be no conductive floating dust, explosive gases and corrosive irritants, so as not to damage the metal insulation and electronic components. Silicon carbide rods should be placed in a dry place to prevent the aluminium head from absorbing moisture and changing. During construction, if it is found that some rods are white and some are dark red, it indicates that the resistance of each rod is different, so it is necessary to replace the rod with a similar resistance value before reapplying.
2, the right temperature
High-temperature vacuum sintering furnace operation and operating temperature has a great relationship. The operating ambient temperature of the controller is limited to 0-50°C, not too high or too low.
3, to ensure that the equipment is connected correctly
In the operating state of the experimental electric furnace, check whether the connection of the connectors of the electric furnace and the controller is intact.
4, flush the electric furnace
Do a good job of flushing the electric furnace of the experimental electric furnace. Should promptly remove the furnace metal oxides, slag and debris, and should be careful to handle the workpiece to prevent damage to the silicon carbide rod.
5, does not meet the requirements of the workpiece is strictly prohibited to enter the furnace.
When using high-temperature vacuum sintering furnace and controller, please make sure that the furnace temperature is within the rated power range, and the furnace temperature can not exceed the limit of use temperature. It is forbidden to load wet workpieces into the furnace. In the heating furnace, the heating workpiece with high moisture content should be dried in advance.
6、Avoid other damage to the heating element
Silicon carbide rods are the recrystallisation products of silicon carbide. Alkalis, alkali metals, sulphuric acid and boron compounds may have a corrosive effect on it at high temperatures, while water vapour can have an effect on it. There is a strong oxidising effect: hydrogen and gases containing large quantities of hydrogen decompose silicon carbide rods at high temperatures, so strict attention must be paid to their application.

How to carry out the maintenance and repair of high temperature vacuum sintering furnace?
1, to regularly check the stirring fan bearing cooling jacket and its water-cooled piping system is not normal, adjust the clearance of each part.
Transmission belt because of the adjusting bolt to adjust the tension, will be because of high temperature creep and elongation, so you need to check once a month, if you find slipping serious, then you need to replace immediately.
2, the surface of the equipment should be frequently wiped to keep clean.
Electrical system electrical connectors should also be kept clean and tight, before each furnace should be checked before each joint is not tight. In the disassembly of the furnace body and system parts, be sure to wash with alcohol or acetone, wait for it to dry after coating with grease, and then loaded.
3, loss of permeability phenomenon
If the furnace chamber is used quartz tube, then when the temperature is higher than 1000 degrees Celsius, the high temperature part of the quartz tube may appear opaque, this phenomenon is called loss of permeability, is a defect of the continuous fusion of quartz tube, is a normal phenomenon.
4, to avoid the situation of spraying material
In the use of cold furnace, because the furnace is cold, so it will need to absorb a lot of heat, in this case, the low-temperature section of the heating rate can not be fast, in each temperature section of the heating rate can not be too big a difference, so, in setting the heating rate, take into account the physical and chemical properties of the sintered material, to avoid the occurrence of spraying, thereby contaminating the furnace tube.
5、Stop heating when the vacuum is lower than 27Pa
In the heating process, if the vacuum inside the furnace is less than 27Pa, to immediately stop heating. In the vacuum sintering furnace maintenance, this is very important. In order to prevent moisture and dirt into the furnace, so the workpiece and the basket should be cleaned and dried before entering the furnace.