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通过大量生产试验 ,研究了镁包芯线喂线球化生产球铁管的生产工艺。结果表明 ,用镁喂线法球化处理的500多吨铁液生产的700余根铸管 ,其内在质量和力学性能、水压试验均达到ISO2531的规定 ;球化处理效果优于冲入法 ,并提高了铸管的质量。
Through a large number of production tests, the production process of magnesium cored wire feeding line ball production ductile iron pipe was studied. The results show that more than 700 cast iron pipes produced by more than 500 tons of molten iron are treated with magnesium feeding line. The internal quality, mechanical properties and hydraulic pressure test meet the requirements of ISO2531. , And improve the quality of the cast pipe.