Key operational knowledge, manufacturer prices for important experimental electric furnaces in Guangdong
2021-04-15
Relatively Important Operational Common Sense for Experimental Electric Furnaces
The experimental electric furnace features rapid heating and uniform temperature distribution; it can be used for heat treatments such as quenching, annealing, tempering, cyaniding, and aging of carbon steels, alloy steels, tool steels, die steels, and aluminum alloys, among others. It is also suitable for low-oxidation heating during precision forging of steel. When conducting heat treatment with the experimental electric furnace, it is essential to pay close attention to the following details to ensure operational safety and the smooth execution of the experiments. The following are some important operating guidelines for the experimental electric furnace:
1. When quenching workpieces under vacuum, vacuum quenching oil shall be used; this oil has a low saturation vapor pressure.
2. When heat-treating titanium alloys in a laboratory electric furnace, nitrogen should not be used as the cooling gas, because titanium reacts with nitrogen at high temperatures to form golden-yellow titanium nitride.
3. The vacuum furnace shall be maintained under vacuum or in a pure nitrogen atmosphere to prevent gas absorption and moisture uptake when it is not in use.
4. Vacuum heating is primarily by radiation; workpieces should be kept at a proper distance from one another within the furnace.
5. The heating temperatures for vacuum tempering, vacuum annealing, vacuum solution treatment, and vacuum aging are generally the same as those used in conventional heat treatments.
6. During the heating process, outgassing from the workpiece and furnace materials will cause the vacuum level to decrease.
7. When starting up a cold furnace, since the furnace chamber is cold and requires substantial heat absorption, the heating rate in the low-temperature range should not be too rapid, and the heating rates across different temperature ranges should not differ excessively. When setting the heating rate, full consideration must be given to the physicochemical properties of the sintered material to prevent spattering and contamination of the furnace chamber.
8. Regularly inspect the electrical connections of the temperature control system to ensure good contact, paying particular attention to the secure connection of all heating elements. If any connections are loose, they must be immediately tightened.
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