graphite electrode smelter

Performance indicators of the three types of graphite electrode smelter body and joints

The performance indicators of the three types of graphite electrode smelter bodies and joints are as follows:

(1) Resistivity. The resistivity of the ordinary power graphite electrode smelter is not more than 8.5μΩ·m, 9.0μΩ·m, 10.0μΩ·m and 10.5μΩ·m, and the resistivity of the ordinary power graphite electrode smelter joint is not more than 8.5μΩ·m; high power The resistivity of graphite electrode smelter is not more than μΩ·m and 7.5μΩ·m, the resistivity of high-power graphite electrode smelter joint is not more than 6.5μΩ·m; the resistivity of ultra-high power graphite electrode smelter is not more than 6.2μΩ· m and 6.5μΩ·m, the resistivity of the high-power graphite electrode smelter joint is not more than 5.5μΩ·m.

(2) Allowable current density and current load when the electrode is used. For graphite electrode smelter with diameter, the allowable current load for ordinary power graphite electrode smelter is, and the allowable current density is 2; the allowable current load for high-power graphite electrode smelter is, and the allowable current density is 2; the allowable current for ultra-high power graphite electrode smelter is The load is, and the allowable current density is 2.

(3) Flexural strength. The flexural strength of ordinary power graphite electrode smelter is not less than 6.4MPa, 7.8MPa and 9.8MPa, the flexural strength of ordinary power graphite electrode smelter joint is not less than 13.0MPa; the flexural strength of high power graphite electrode smelter is not less than 9.8 MPa and 10.5MPa. The flexural strength of the high-power graphite electrode smelter joint is not less than 14.0MPa; the flexural strength of the ultra-high-power graphite electrode smelter is not less than 10.0MPa and 10.5MPa. The flexural strength of the ultra-high-power graphite electrode smelter joint is not less than 10.0MPa and 10.5MPa. The strength is not less than 16.0MPa.

(4) Bulk density. The bulk density of ordinary power graphite electrode smelter is no less than 1.3 and 1.3, the bulk density of ordinary power graphite electrode smelter joint is no less than 1.3; the bulk density of high power graphite electrode smelter is no less than 1.3, and the volume density of high power graphite electrode smelter joint is no less than 1.3. The density is not less than 1.3; the bulk density of the ultra-high power graphite electrode smelter is not less than 1.3 and 1.3, and the bulk density of the ultra-high power graphite electrode smelter joint is not less than 1.3 and 1.3.

(5) Linear expansion coefficient. In the temperature range of °C, the coefficient of linear expansion of ordinary power graphite electrode smelter is not more than 2.9×10-6°C-1, and the coefficient of linear expansion of the joint of ordinary power graphite electrode smelter is not more than 2.7×10-6°C-1 and 2.8 ×10-6℃-1, which is only used as a reference index; for high-power and ultra-high-power graphite electrode smelter, the linear expansion coefficient is used as the main quality assessment index, and the linear expansion coefficient of high-power graphite electrode smelter is not more than 2.4 ×10-6°C-1. The linear expansion coefficient of the high-power graphite electrode smelter joint is not more than 2.2×10-6℃-1, the linear expansion coefficient of the ultra-high-power graphite electrode smelter is not more than 1.5×10-6℃-1, the ultra-high-power graphite electrode smelter The coefficient of linear expansion of the joint is not more than 1.4×10-6°C-1.

(6) Consumption of steelmaking electrodes. The electrode consumption of ordinary power graphite electrode smelter is 46kg per ton of electric furnace steel, while the electrode consumption of high-power graphite electrode smelter is 2.53.5kg per ton of electric furnace steel, and the electrode consumption of ultra-high power graphite electrode smelter is 1.12.5kg per ton of electric furnace steel.