Vacuum furnace graphite parts single crystal furnace graphite heater tips: 1Vacuum furnace graphite parts single crystal furnace graphite heater should have a rapid cooling device. The cooling water pressure should be greater than 02MPa, the flow rate should be adjustable.
2.Cooling gas, steel generally uses pure nitrogen, superalloy uses nitrogen or argon, titanium alloy uses argon.
3.After the workpiece is put in, it can be heated to 667pa。
4.When processing titanium alloys in vacuum furnaces, nitrogen should not be used as a cooling gas, because titanium and nitrogen react at high temperatures to form golden titanium nitride.
5.During the heating process of the graphite heater of the single crystal furnace graphite parts in the vacuum furnace, the workpiece and materials in the furnace will be deflated to reduce the vacuum level.
6.The heating temperature of vacuum tempering, vacuum annealing, vacuum solution treatment and vacuum aging is generally the same as that of conventional treatment.
7.The movable connection part of the graphite heater of the vacuum furnace graphite part of the single crystal furnace is all sealed with O-shaped rubber ring, and the part is water-cooled.
8.The boost rate of the graphite heater of the single crystal furnace of the domestic vacuum furnace graphite should not be greater than 133pa h, the standard of some foreign enterprises is 067 pa/h。
9.Vacuum heating is mainly radiation, and the workpiece should be kept at a certain distance in the furnace.
10.When the workpiece is quenched in a vacuum, vacuum quenching oil should be used, which has a low saturated vapor pressure.
11.The maintenance of the graphite heater of the vacuum furnace graphite parts should be in a vacuum or pure nitrogen state to avoid inhaling and absorbing water when not in use.