Structural features and precautions of SG2 series crucible resistance furnace for experiment

The structure of SG2 series resistance furnace is cylinder, which consists of shell, fire-resistant layer, heat preservation layer, heating element and furnace cover The furnace shell is made of rolled steel plate, the working chamber is a forming furnace, the inner surface of the furnace is made of spiral wire groove, the heating element is made of high-temperature resistance wire wound and placed in the wire groove, the leading out pole is led out of the furnace through the sleeve and connected with the temperature control cabinet, the structure has the advantage of convenient replacement of furnace wire Between the furnace and the furnace shell is a thermal insulation layer composed of refractory fiber, etc The furnace cover is made of steel plate and welded with thermocouple base and handle The furnace cover is filled with fire-resistant fiber A travel switch is set beside the furnace cover to control the on-off of the furnace wire power supply and avoid the occurrence of dangerous events The thermocouple is inserted into the furnace from the furnace cover 2 Installation and use of equipment 1 This series of resistance furnaces do not need special installation, but only need to be placed on flat ground or workbench The controller shall avoid vibration, and shall not be placed too close to the electric furnace to prevent the electronic components from working normally due to overheating 2 Before the installation of electric furnace, check whether it is damaged or incomplete due to transportation or other reasons When it is complete, remove the dirt from the parts first, repair the defects found, and then install 3 Insert the thermocouple from the coupling hole, and fill the gap between the coupling hole and the thermocouple with asbestos rope to prevent heat loss 4 Check whether the electric heating element is broken, cracked, seriously bent, or out of the brick 5 Please refer to the wiring diagram in the controller manual to connect the power line, electric furnace line and compensation wire 6 After the wire is connected, please dry the furnace according to the following procedures before using the new furnace * times 3、 Maintenance and precautions: 1 When the electric furnace is used for several times and used again after a long-time shutdown, it must be dried; 2 The use temperature of the electric furnace shall not exceed the rated temperature to avoid burning the electric heating elements; 3 The controller shall be protected from vibration and damaging the instrument during handling 4 Regularly check whether the terminals of electric furnace and controller are in good contact 5 The workpieces with corrosive, volatile or explosive gas shall not be heated in the furnace to avoid affecting the life of electric heating elements and refractories or explosion 6 When the electric heating element is burnt out, if it is partially burnt out, it can be welded with A402 electrode after being lapped with the furnace wire of the same material If it is burned seriously, it shall be replaced Shangyu Star Instrument Equipment Co., Ltd is located in Daoxu Town, Shangyu District, Shaoxing City, Zhejiang Province It is an enterprise integrating production, product development, processing and trade The company's main products: drying box series, incubator series, laboratory muffle furnace series, distiller series, as well as clean workbench, air shower room, ventilation cabinet, biosafety cabinet and other complete sets of purification equipment The company has a strong technical research and development team, a strong after-sales service system, is the leading manufacturer of complete set of laboratory equipment in China, welcome customers to buy.