Temperature control system of experimental electric furnace
It is equipped with double-layer silicon controlled furnace temperature control relay, high temperature control effect, multi-phase temperature control, high temperature control in furnace, multi-phase temperature control system, high-precision temperature control, multi-phase temperature control, high-precision furnace temperature control It has the advantages of low surface temperature, fast temperature rise and fall, energy saving and so on.
The temperature control adopts advanced touch screen control and system PLC control, which is completely reliable, user's experimental data can be checked, and the experimental efficiency is improved. Equipped with RS232 communication interface and sigma data management software, it has the function of paperless recording historical data and heating curve, correcting temperature deviation error, and equipment fault diagnosis and analysis.
Heating element of experimental electric furnace
The heating elements in the experimental furnace mainly include 0cr25al5, 0cr27al7mo2, Cr20Ni80, SiC, MoSi2, TD, Mo, W, zirconia, lanthanum chromate and so on.
In particular, the heating elements of high temperature furnace are expensive and have limited service life; zirconia, as a high-temperature heating element, can achieve a high temperature of 1800 ℃, but it is difficult to prepare and expensive, and its conductivity is not good at low temperature, so its application in high-temperature electric furnace is limited. The new type of lanthanum chromate heating element overcomes the shortcomings of low temperature performance of lanthanum chromate rod, and develops a new type of double heating system 1800 ℃ high temperature electric furnace, which provides important test equipment for the development of material science. It has a very good prospect. Characteristics of lanthanum chromate heating element lanthanum chromate heating element is a kind of resistance heating element which is mainly composed of lanthanum chromate and used in high temperature oxidation atmosphere electric furnace. The high surface temperature of lanthanum chromate heating element can reach 1900 ℃ and the furnace temperature can reach 1800 ℃. The furnace temperature stability can be within 1 ℃. The heating rate of lanthanum chromate heating element should not be too fast and the more uniform the better. The heating rate should not be greater than 400 ℃ / h. The heating rate of furnace temperature should be less than 4 ℃ / min below 300 ℃, and less than 5 ℃ / min at 300-1000 ℃. Generally, it should be controlled between 200-300 ℃ / h.
On 2018-08-08 11:45:46
