How does a vacuum furnace measure temperature at 9 o 'clock
lay jin
When the vacuum furnace is used, it is necessary to measure the
temperature at 9 o 'clock. Let's find out!
First of all, it is confirmed that
all the instruments are effective. According to on-site product and process
execution, nine samples are taken for inspection, and the test content includes
hardness and metallographic structure. Then, it is determined whether all
samples taken at the nine-point position are unqualified.
Measuring
temperature at 9 o 'clock is not difficult actually, according to present
condition, have 3 kinds of methods to be able to achieve.
1. There is only
one single channel thermometer, which is measured by manually rotating each
channel, so that the error of each channel is consistent and can truly reflect
the deviation in the furnace.
2. There is a patrol instrument that can
automatically switch each channel signal, but only replace example 1 with
automatic switch.
3. There is a multi-channel recorder (of course, 12
channels or above), which can be paper or paperless, and can show the
temperature in the furnace at the same time. Since the error of each channel is
inconsistent, the actual measurement data should be corrected.
The general
well type furnace is the intermediate cross plug type, see your electric furnace
is several areas, if it is two areas to measure the temperature, is simple
carburization temperature high thermocouple requirements are also high,
preferably S type thermocouple material is 2520.