graphite electrode properties
Quality requirements and characteristics of high-power graphite electrode properties
When purchasing high-power graphite electrode, you must do a good quality inspection, even if there is no slack in the acceptance. The surface of the high-power graphite electrode generally does not exceed two pieces or two holes, and the joints, joint holes, and electrode surfaces within the range of the hole bottom are not allowed to have holes or cracks. The thread of the joint and joint hole shall not exceed one drop and the length shall not exceed 30mm. The surface of the high-power graphite electrode is not allowed to have transverse cracks, longitudinal cracks with a width of 0.3-1.0mm, the length of the cracks should not be greater than 5% of the electrode circumference, and no more than two; longitudinal cracks with a width of less than 0.3mm are not allowed to have two Article. For the surface area of a high-power graphite electrode, its width is less than one-tenth of the electrode circumference, and its length is less than one-third of the electrode length.
In order to ensure the quality of high-power graphite electrode properties, in addition to the above details, it is necessary to pay attention to packaging, marking, storage, transportation and quality certificates. Mark a safety line on the surface corresponding to the bottom of the finished high-power graphite electrode joint hole. The resistivity of high-power graphite electrode properties can measure the degree of graphitization of graphite electrode properties. The lower the resistivity of graphite electrode properties, the higher the thermal conductivity and the better the oxidation resistance. The allowable current density of graphite electrode is related to its resistivity and electrode diameter.
The lower the resistivity of graphite electrode properties, the higher the allowable current density, the larger the diameter and the smaller the diameter. The mechanical strength of high-power graphite electrode properties can be divided into compressive strength, bending strength and tensile strength. The flexural strength is a performance index related to the fracture of the graphite electrode during use. In an electric furnace, when the electrode is in contact with a non-conductor, or due to collapse and collision, strong crack vibration damage, effects, etc., the graphite electrode is often in danger of being broken. Graphite electrode properties have high bending strength and are not easy to break. When multiple electrodes are connected in series on the electrode column, the connection is subject to a lot of tension, so the tensile strength index of the joint should be specified.