hp 300 mm graphite electrodes

Quality requirements and characteristics of high-power hp 300 graphite electrode

When purchasing high-power hp 300 graphite electrode, you must do a good job of quality inspection, even in the acceptance, there should be no slack. The surface of the high-power hp 300 graphite electrode generally does not exceed two pieces or two holes, and the joints, joint holes, and electrode surfaces within 100mm from the bottom of the hole 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 hp 300 graphite electrode is not allowed to have transverse cracks, longitudinal cracks with a width of 0.3-1.0mm, the length of the crack should not be greater than 5% of the electrode circumference, and no more than two; longitudinal cracks with a width less than 0.3mm are not allowed There are two. For the surface area of the high-power hp 300 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 the high-power hp 300 graphite electrode, 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 hp 300 graphite electrode joint hole.

The resistivity of the high-power hp 300 graphite electrode can measure the degree of graphitization of the hp 300 graphite electrode. The lower the resistivity of the hp 300 graphite electrode, the higher the thermal conductivity and the better the oxidation resistance. The allowable current density of the hp 300 graphite electrode is related to its resistivity and electrode diameter. The lower the resistivity of the hp 300 graphite electrode, the higher the allowable current density, the larger the diameter and the smaller the diameter.

The mechanical strength of the high-power hp 300 graphite electrode can be divided into compressive strength, bending strength and tensile strength. The flexural strength is a performance index related to the fracture of the hp 300 graphite electrode during use. In the electric furnace, when the electrode is in contact with a non-conductor, or due to collapse, collision, strong crack vibration damage, effects, etc., the hp 300 graphite electrode is often in danger of being broken. The hp 300 graphite electrode has high bending strength and is 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.