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我厂HGX—3炼钢电弧炉上的电极夹持器,曾是用A3钢板制作的,中间通水冷却(见图1),过去,一个新的夹持器,往往装上去使用两三个月,便被电弧击穿漏水,不得不经常在生产中途被迫停炉进行焊补。边种因击穿而焊补过的夹持器,继续使用,情况更坏,隔不了三五天又会被击穿,成为影响我厂电弧炉正常炼钢的一个经常出现的主要设备问题。为了解决这个问题,我们仔细地观察了漏水部位的情况,发现在电极夹持器与石墨电极的接触面上,存在一层氧化铁,使得两者接触不良,电阻增
Electrode holder on HGX-3 steel-making electric arc furnace of our factory was once made of A3 steel plate. The middle is water-cooled (see Fig. 1). In the past, a new holder was often installed to use two or three Month, it will be arc leakage through leakage, often have to stop the furnace in the middle of production welding repair. Side of the type due to breakdown and welding make up the holder, continue to use, the situation is even worse, will not be separated in 35 days will be punctured, become a regular impact of the normal EAF steel plant a major equipment problems. In order to solve this problem, we carefully observed the leakage of parts of the situation and found that the electrode holder and the graphite electrode contact surface, there is a layer of iron oxide, making the poor contact between the two, increased resistance