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Conductive aluminum electrode arc furnace development and application of arm


I pressed the power necessarily - some essays arm of drums when the power structure (MW) l19.0 Gan given electric moment (kA) l38.0 Xiao Jing Tong pressure most voltage (V'l367 Dong-voltage power (V) I170 base reactance ( mO) l3.281 base resistance value (rag) I4.414 impedance (raft)} 5590 for a power transformer must be hi head cable lo.803 stack (MVA) l24.46 advice l83 furnace wall refractory wear and tear resistance arm loss ( kW) l4S4 in steel arc jealous of aluminum electric arm when used in electric arc furnace, although the effect of the operational status of different causes vary, but try to increase the maximum current to 5 ~ 1O effective power calculation,[link widoczny dla zalogowanych], if the steel an actinide time 8Omln, then we would hope that every furnace melting din ~ ~ No. 6 aluminum conductive electrode arc furnace Cao Miaokang static arm shortened development and application of stare mixing 3 ~ 5rain joint projects such as British Steel Corporation in 150t Arc Furnace aluminum installed electric arm live, due to reduced equipment weight, shorten the response when you hear,[link widoczny dla zalogowanych], cause when each furnace melting with a corresponding reduction in 5rain, and to improve the operation of standard bar 8.sN】. In terms of cut maintenance ladle refining furnace used for the improvement of the situation the same. 5 Conclusion arc furnace electrode arm gripping, as the traditional complex structure, many defects, resulting in aluminum electric arm of the development and application. aluminum electric arm light weight, conducting cross-sectional area, structural tube straw, so it has great applicability and superiority. The first is to improve the electrical characteristics,[link widoczny dla zalogowanych], the same transformer capacity, the effective power increase of 5% to 10% lower power consumption per ton 2OkWh, maintenance costs down goN. so very conductive aluminum bright prospects arm, it is worth attention to the domestic metallurgical workers. References [1] Shen Fang. electric arc furnace steel-making technology and equipment to Beijing. hard disk Industry Press .1983 a O} l5 [Women StahluE] sen, 1994, (11) [3] Electrical system indium .1994, es (D. 76 ~ 78H] aluminum conducting large-scale electric arc furnace Ying mining dump arms. World Metal Guide l § gs of a 01 - 2'o. 'o...-o.' o. 'o.; Information Report l ~ - o - o - o - o - o - o-. o reduce the inclusions in molten steel tapping new method has the advantage of oxygen when oxygen can ensure adequate sedation after time, the drawback is the deoxidation products A1, 0, and suspended in the molten steel slag in the generation A1a-D inclusions, and remains in the steel. This kinds of inclusions in the rolling than a single A1. deformability of inclusions is small, easy to make cans with sheets generated. edge cracking. with oxygen refining device can guarantee the advantages of separation of slag and metal, oxygen is not generated when the A1. ca 10 inclusions, the drawback is not sufficient to ensure that calm time, inclusion can not be fully separated left floating in steel. deoxidation methods to take advantage of the advantages of the two,[link widoczny dla zalogowanych], Nippon Steel developed a large oxygen plants method, that is; converter after tapping, the ladle of molten steel slag in the distribution of aluminum powder surface,[link widoczny dla zalogowanych], so that the slag Fe0 to 3 below, and then from the center of the ladle bottom blowing air brick Ar, so that the slag moves to the package wall, put slag into the rules package at the center of the steel was molten steel surface. no residue condition, then adding oxygen scavenger for oxygen, oxygen sedation after no less than 30rain, and pass into the ladle stamped with Ar gas to prevent reoxidation of molten steel. Nippon Steel 350t converter on a large branch in the present invention was compared with the test, refining molten steel Sheng final component (); C0.03 ~ 0.05, Si0.08 ~ 0.13, M110.20 ~ 0.50. P0.0O7 ~ 0.010, S0.007 ~ 0.010, Al0.04 ~ 0.06. test confirmed; ① steel is put in a 400kg block of aluminum deoxidation of molten steel after oxygen sedation 49mln, inclusions in molten steel A1iO.-CaO-MeO, 100t into the middle of pack, the number of inclusions was 25mg/lokg, cast slab thickness of 250 bleed at the nose after the occurrence of surface defects was 0.001 ~ j @ devices with oxygen refining of molten steel sedation 2lrain, inclusions in molten steel for the A120 |, note ~ .100 t tundish, the number of inclusions 115rag/10kg, slab surface defect rate of 0.0033, ③ deoxy method with the present invention, molten steel killed 40rain, steel composition of the water inclusions AltO., into 1D0t tundish, the number of inclusions in molten steel 8mg/lokg, slab surface defects was o.0002. Shum Wing Kuen Quoted \
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