Experimental furnace use and classification
Experimental furnace too literally, is mainly used for testing, and more for quantitative analysis sintering, ash test; is an intermittent resistance furnace, but is not to say that is a batch-type furnace laboratory furnace.
Test furnace use and classification
Today applied universities, industrial and mining enterprises and other tests and small batch production purposes.
Test furnace many varieties, but generally able to classify the following aspects: 1 From the shape of the furnace can be divided into: box-type resistance furnace and tubular resistance furnace; 2 from the operating procedures can be divided into: manual programming and resistance furnace intelligence resistance furnace; 3 from the desired test conditions the atmosphere can be divided into: oxidizing atmosphere and vacuum atmosphere resistance furnace resistance furnace. 4. From the highest temperature can be divided into: low-temperature resistance furnace (600 ℃ or less), temperature resistance furnace (600 ℃ -1000 ℃), high-temperature furnace (1000 ℃ -1700 ℃), ultra-high temperature furnace (1800 ℃ -2600 ℃).
Heating element
Heating element respectively, 0Cr25Al5, 0Cr27Al7Mo2, Cr20Ni80, SiC, MoSi2, Td, Mo, W, zirconium dioxide, lanthanum chromite heating elements and the like.
Especially the high-temperature furnace heating elements, expensive, and the use of finite life; zirconia as a high temperature heating element to complete a high temperature 1800 ℃, but preparation difficult, expensive, and conductivity at low temperatures is not good function, the use of high-temperature furnace limited. Lanthanum chromite new heating element, lanthanum chromite overcome the shortcomings of the rod on the low temperature function, we developed a new double 1800 ℃ high temperature furnace heating system for the supply of material to carry out important scientific laboratory equipment. It has very good prospects. Features lanthanum chromite heating element 1 lanthanum chromite heating elements are lanthanum chromite as the main component, the use of an electric furnace in an atmosphere of high temperature oxidation resistance heating element, the heating element lanthanum chromite maximum surface temperature is 1900 ℃, furnace temperature can reach 1800 ℃. Low energy consumption, can accurately control the temperature, the degree to which the furnace temperature stable within 1 ℃. Lanthanum chromite heating element to heat up in the process of applying the speed is not too fast, the better and the more uniform heating rate should not be greater than 400 ℃ / h. Furnace heating rate should be below 300 ℃ <4 ℃ / min, should be at 300 ~ 1000 ℃ <5 ℃ / min, should normally be controlled between 200 ~ 300 ℃ / h.
Temperature control system
Experimental furnace operation is simple, high precision temperature control, thermal insulation effect, large-scale temperature, furnace temperature uniformity, multi-zone temperature control system, a phase-shift trigger, SCR control, zero trigger, solid state relays, today furnace selected polycrystalline alumina fiber is more, double room with air-cooled furnace shell system, fast heating and cooling of the oven with the temperature field balanced, low surface temperature, rapid temperature elevating rate of energy saving.
Temperature control selection leading touch screen control, PLC control system chosen, having thoroughly reliable, user experimental data are available, the test efficiency progress. Equipped with RS232 communication interface, Sigma data management software, with no paper record history data and the temperature rising curve, temperature violation error proofing function, fault diagnosis analysis.
