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一、概述在钢液浇注过程中从模底吹氩清洗钢液,是炉外精炼新方法之一,它可以除去有害气体,促使非金属夹杂物上浮。同时,对钢锭的结晶过程也能起到良好的影响。 1982年4～8月,用自行研制的喷嘴吹氩装置,在陕西重型机器厂铸钢车间进行了模底吹氩试验,试验锭重7～20t。经39次试验的结果表明:模内钢水含氢量可减少20％;钢锭合格率可提高5.4％。为了搞清吹氩对钢锭结构、偏析、夹杂、气体及机械性能的影响,对吹氩和不吹氩的1t锭作了对比
I. Overview In the molten steel pouring process from the mold bottom argon cleaning liquid steel is one of the new furnace refining method, which can remove harmful gases, prompting non-metallic inclusions floating. At the same time, the ingot crystallization process can also play a good effect. From April to August 1982, the argon blowing was carried out on the self-developed nozzle, and the argon blowing at the bottom of the mold was carried out in the steel plant of Shaanxi Heavy Machinery Plant. The test ingot weight was 7-20 t. After 39 tests, the results show that the hydrogen content of molten steel can be reduced by 20%; the pass rate of steel ingot can be increased by 5.4%. In order to clarify the impact of argon blowing on the ingot structure, segregation, inclusions, gas and mechanical properties of the argon blowing and argon blowing 1t compared