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研究了工程机械用TQ960E微合金化低碳高强度钢的化学成分设计、钢质纯净度提升、热处理工艺试验、析出物分析等,结果表明,TQ960E钢12mm热轧板(/%:0.18C,0.23Si,1.50Mn,0.010P,0.003S,0.06Ti,0.002B,0.0063N,0.00130)最佳淬火温度860—900℃,回火温度300—350℃,工业化试制出的钢板屈服强度≥1000MPa,抗拉强度≥1100MPa,延伸率≥10%,-40℃冲击功≥34J,满足国内工程机械用超高强钢的标准及应用要求。