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The importance of daily maintenance of quartz tube in the use of high temperature tubular electric furnace
The temperature resistance of quartz tube is related to its purity. The higher the purity, the higher the temperature resistance. Tubular furnaces are a good choice for laboratory dynamic sintering applications. The function of quartz tube, one of the important parts of tube furnace, can not be underestimated. Excellent roasting effect, modern design and high reliability are the outstanding characteristics of this kind of electric furnace. Furnace body to open design, easy to replace furnace tube, safe and reliable, energy saving and environmental protection.
Tubular furnaces are a good choice for laboratory dynamic sintering applications. The function of quartz tube, one of the important parts of tube furnace, can not be underestimated. Excellent roasting effect, modern design and high reliability are the outstanding characteristics of this kind of electric furnace. Furnace body to open design, easy to replace furnace tube, safe and reliable, energy saving and environmental protection.
Tube furnace consists of furnace body and waste heat recovery system, tube furnace furnace has a chimney damper is installed inside, furnace body in the bottom chimney dampers set with high temperature flue gas exports, waste heat recovery system including air preheater, whose character is: the air preheater by condensing air preheater and condensing air preheater of two pieces. Tube furnace is mainly used in universities, scientific research institutes, industrial and mining enterprises and other experiments and small batch production. It has safe and reliable, simple operation, high temperature control accuracy, good insulation effect, large temperature range, high uniformity of furnace temperature, temperature zone, optional atmosphere, vacuum furnace type, etc.
Tubular furnace because of its unique structure, the furnace tube is an important key component, but also in the process of production test reaction place, working area. And the furnace tube is directly related to the gas, pressure and operation method. Therefore, attention must be paid to the use and maintenance of quartz tube in the process of using tubular furnace:
1, quartz tube softening softening point, duration limit should not be used too long.
2, tube furnace usually don't recommend customer hydrogen, except through the concentration of hydrogen content in explosion limit, if the customer need to use tubular furnace concentration in concentration of hydrogen gas explosion, must do a good job in security measures, the general gas when people don't stand on both ends of the furnace tube, if hydrogen use stainless steel tube, as a result of the stainless steel heat conduction coefficient is larger than quartz, Therefore, both ends of the stainless steel need water cooling, otherwise the O-ring temperature is too high to seal,
3, keep the furnace tube clean and health, the furnace tube can not remain and SiO2 reaction material, burning material, in order to make the service life of the furnace tube longer, do not directly put the material on the furnace tube, with a boat crucible filled.
4, when heating, please be sure to put ceramic plug in the furnace tube, otherwise the temperature at both ends of the furnace tube is higher, the O-ring in the flange can not withstand higher temperature, making the air tightness is not good, put the plug and the two ends of the furnace is conducive to the formation of a balanced temperature field.
5, please be sure to put the alumina furnace heating furnace tube plug, put two side, a total of four, on both sides of the furnace can plug en croute distance in about 450 mm, if you don't put out plug, on both ends of the furnace tube temperature is higher, the o-rings in the flange can't bear high temperature, makes the air tightness is not good, put out plug on both ends of the furnace tube is helpful to form a balanced temperature field.
6. The temperature resistance of quartz tube is related to its purity. The higher the purity, the higher the temperature resistance.
The test furnace heating speed is fast, the temperature is uniform; Can be used for carbon steel, alloy steel, tool steel, die steel and aluminum alloy, such as quenching, annealing, tempering, cyanide, aging and other heat treatment; It can also be used for steel precision forging with less oxidation heating. When using the test furnace for heat treatment, we must pay attention to the following details to ensure the operation safety of the test furnace and make the test go on normally. Here are some more important experimental electric furnace operation knowledge:
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