Working principle and maintenance of electric arc furnace

Xi'an arc furnace is divided into three categories, the three types of work as follows:

The first type is the direct heating type. The arc occurs between the electrode rod and the melting charge, and the charge is directly subjected to the arc heat. Mainly used for steelmaking, followed by smelting iron, copper, refractory materials, refined steel liquid, etc..

The second kind is the indirect heating type, the arc occurs between two special electrode bars, the burden is subjected to the electric arc radiation heat, is used in the smelting copper, the copper alloy and so on. This furnace is very noisy and has poor smelting quality, and has gradually been replaced by other furnaces.

The third type is called the ore furnace, which is made of high resistivity ore. The lower part of the electrode is usually buried in the burden during the working process. The heating principle of the utility model is that the utility model not only utilizes the heat produced by the resistance of the charge when the current passes through the furnace charge, but also utilizes the heat generated by the arc between the electrode and the furnace charge. So it is also called arc resistance furnace.

Silicon carbide rod type furnace, found that silicon carbide is damaged, should be replaced with new specifications instead of silicon carbide and the resistance value of similar. When you remove the change at both ends of the maintenance cover and the silicon carbide collets, then remove the damaged silicon carbide rod, silicon carbide as easily broken, to be careful with the device, both ends exposed internal furnace shell should be equal, must chuck fastening, make contact with the silicon carbide rod good. Should the chuck be badly oxidized, replace it with new one. The silicon carbide hole slot are arranged at the both ends of the use of asbestos rope infarction. The furnace temperature shall not exceed the highest task temperature of 1350 degrees centigrade. The silicon carbon V type mixer allows 4 hours of continuous duty at the lowest temperature. In Xi'an electric furnace after a very long time, such as clockwise direction heating power conditioning button to the maximum position, the heating current still can not go up. Small interval labeling machine extra value is not up to the required heating power, interpretation of silicon carbide has been aging. High temperature resistance furnace without assembling silicon carbide in connection to change, only need to change the connection, and change the connection method, using muffle furnace should pay attention to slow conditioning heating power conditioning knob, heating current shall not exceed the value of additional value. The instrument shall be placed in a dry, ventilated and non corrosive gas mixer, with a mission environment temperature of 10 - 50 DEG C and an absolute temperature of no more than 85%. In order to ensure accurate measurement, the DC temperature difference meter is used to correct the thermometer of XMT type temperature controller every year in order to avoid causing greater errors. The low temperature box type furnace shall check whether the local hot wire is loose or not, and whether the contactor contactor's contact is good or not, and show the defects should be repaired in time.

Primary maintenance of arc furnace

Well cementation, arc furnace, anti-static clean clothes, primary maintenance of infiltration agent, media input maintenance content and requirements are as follows:

1. penetrant medium input pipe unimpeded, without leakage.

2. clean the injector and read clearly.

3. check that the exhaust pipe is intact and not blocked.

4. check the connections, valves and fastening of each pipe.

5. check the exhaust device, safe and well.

Maintenance of furnace with two stage maintenance

1. determine the resistance value of each resistance wire, according to the measured value of resistance value and the required gap size, determine the replacement program.

The damage degree, protective ring collar and 2. check furnace furnace for the spare parts, and to determine the replacement time.

Xi'an PENGYUAN Metallurgical Equipment Co. Ltd. was established in February 20, 2017, is located in Shaanxi Xi'an Chinese, main business is manufacturing, environmental protection dust removing technology design, smelting raw materials processing and advanced smelting technology development and design of metallurgical equipment, the company's vision is to become the service sets smelting technology can provide advanced and suitable for user solutions to leading enterprises, will "create excellent brand, metallurgy furnace industry. The company is devoted to the design, manufacture, sale and installation and service of electric arc furnaces, refining furnaces, and ore furnaces. Manufacturer's landline: 029-88601474