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介绍了化学成分、力学性能、偏析与索氏体比例、夹杂物、氧化与脱碳、几何尺寸和表面质量等因素对高碳钢C72DA线材产品质量的影响,与国内其他生产厂家对比分析了产品质量现状。结果表明:该盘条化学成分控制范围窄、抗拉强度波动小、组织偏析度小于等于2级、索氏体比例大于等于80%,大部分夹杂物大小在10μm以下、100 mm2面积内数量小于等于130个、但存在大于3μm的Al2O3脆性夹杂,表面光滑无缺陷、无脱碳层、氧化皮质量分数为0.2%、几何尺寸均一性好。产品完全满足胎圈钢丝、胶管钢丝企业的生产要求。
The effects of chemical composition, mechanical properties, segregation and sorbite content, inclusions, oxidation and decarburization, geometrical dimensions and surface quality on the quality of high carbon steel C72DA wire were introduced. The products were compared with other domestic manufacturers Quality status. The results show that the wire rod has narrow control range, small fluctuation of tensile strength, less than or equal to 2 degree of microstructure, sorbite ratio greater than or equal to 80%, most inclusions less than 10μm and less than 100mm2 Equal to 130, but there is more than 3μm of Al2O3 brittle inclusions, the surface is smooth and defect-free, without decarburized layer, the mass fraction of scale is 0.2%, geometric uniformity is good. Products fully meet the bead wire, hose steel wire production enterprises.