摘要
针对济钢生产的HRB400钢筋存在强度偏低、质量不稳定等问题进行调查分析,认为主要原因是碳当量偏低、终轧温度高、轧后冷却效果差及负偏差值过大等。通过采取适当调整化学成分、增加压缩比、降低开轧温度、控制终轧温度、强化穿水冷却等一系列改进措施,保证了HRB400钢筋质量稳定,抗拉强度平均提高35MPa,屈服强度平均提高30MPa。
Aiming at the problems that HRB400 reinforcing bar produced by Jigang has low intensity and unstable quality, the investigations and tests are put out. The results show that the main reasons are low carbon equivalent, high finish rolling temperature, poor cooling effect -after rolling and over negative deviation. By adopting a series of improvement measures such as adjusting the chemical compositions properly, inerrasing the compression ratio, reducing the rolling temperature, controlling the finishing temperature and strengthening penetration cooling etc., the stable quality of HRB400 reinforcing bar is insured, the tensile intensity and yield intensity are improved respectively by 35MPa and 30MPa averagely.
出处
《山东冶金》
CAS
2005年第6期18-19,共2页
Shandong Metallurgy
关键词
HRB400热轧带肋钢筋
力学性能
质量异议
改进措施
HRB400
hot rolled ribbed steel bar＇, mechanical properties
quality objection
improving measures
