High-strength and high-elongation nodular cast iron material and preparation method thereof

• Main Authors: WANG ZHIQIANG, LIU GUOPING, SHAO DONGQING, ZHANG JUNWEN, SU HONGBING, JIANG YUAN, GUO ZHIHONG, DING FENG, LU ZHENGRONG
• Format: Patent
• Language: Chinese; English
• Published: 30.10.2020
• Subjects: ALLOYS; CHEMISTRY; FERROUS OR NON-FERROUS ALLOYS; METALLURGY; METALLURGY OF IRON; PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OFWROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS

The invention discloses a high-strength and high-elongation nodular cast iron material and a preparation method thereof. The high-strength and high-elongation nodular cast iron material is prepared from the following raw material of, in parts by weight, 24 parts-26 parts of pig iron, 24 parts-26 parts of scrap steel, 48 parts-52 parts of foundry returns, 0.625 part of a pretreating agent, 0.4 part-0.9 part of an instant carburetant, 3.1 parts-3.4 parts of carbon, 3.0 parts-3.4 parts of silicon, 0.05 part-0.2 part of manganese, 0.01 part-0.05 part of phosphorus, 0.005 part-0.02 part of sulfur,0.4 parts-0.7 part of copper and 0.001 part-0.02 part of tin. The prepared nodular cast iron material product is safe in performance and has high strength and high extensibility compared with an existing nodular cast iron material. 本发明公开了一种高强度、高延伸率的球墨铸铁材料及其制备方法，其中，高强度、高延伸率的球墨铸铁材料包括如下重量份配比的原料：24-26份的生铁、24-26份的废钢、48-52份的回炉料、0.625份的预处理剂、0.4-0.9份的速溶增碳剂、3.1-3.4份的碳、3.0-3.4份的硅、0.05-0.2份的锰、0.01-0.05份的磷、0.005-0.02份的硫、0.4-0.7份的铜、0.