PC钢棒断裂分析与改进措施
Improvement and Crack Analysis on PC Bar
安俊杰，吴爱新 ，刘战英，赵文成
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作者单位：河北联合大学冶金工程学院,唐山科技职业技术学院冶金系
中文关键字：PC钢棒；断裂；回火索氏体；夹杂物
英文关键字：PC bar；fracture；temper sorbite；inclusion
中文摘要：本文讨论了PC钢棒的生产工艺流程, 对断裂的PC钢棒进行断口、化学成分、夹杂物及金相组织分析。结果表明：PC钢棒断口呈脆性断裂特征，断裂的主要原因是热处理后没有形成回火索氏体组织，原材中存在夹杂物、表面裂纹也会引起PC钢棒断裂，提出了改进措施。
英文摘要：In this paper the production process of PC Bar was discussed. The fracture PC bars were analyzed by means of the fracture macrostructure, chemical composition, microstructure and inclusion. Results showed that the fracture presents brittle characteristics and the main fracture reason was that the microstructure was not temper sorbite after heat treatment. The surface crack and inclusion in the raw materials caused failure also. Some measures were proposed.