山东冶金
山東冶金
산동야금
SHANDONG METALLURY
2014年
1期
22-24,27
,共4页
祝桂合%万友堂%曹鲁奇%彭海红
祝桂閤%萬友堂%曹魯奇%彭海紅
축계합%만우당%조로기%팽해홍
中厚板%探伤%微裂纹%H含量
中厚闆%探傷%微裂紋%H含量
중후판%탐상%미렬문%H함량
medium plate%flaw detection%micro crack%hydrogen content
针对探伤合格率低的问题，对探伤不合钢板进行解剖分析，认为引起探伤不合的原因是钢板厚度中心处存在聚集分布的微裂纹。通过对微裂纹产生主要因素的调查和针对性的对比试验，发现微裂纹的产生除与铸坯偏析、MnS夹杂、道次压下率等有关外，钢中的H含量是一个至关重要的影响因素。通过采取降低钢中H含量的措施，实现了钢中H含量的大幅度降低，探伤合格率由原来的95%提高到98%以上。
針對探傷閤格率低的問題，對探傷不閤鋼闆進行解剖分析，認為引起探傷不閤的原因是鋼闆厚度中心處存在聚集分佈的微裂紋。通過對微裂紋產生主要因素的調查和針對性的對比試驗，髮現微裂紋的產生除與鑄坯偏析、MnS夾雜、道次壓下率等有關外，鋼中的H含量是一箇至關重要的影響因素。通過採取降低鋼中H含量的措施，實現瞭鋼中H含量的大幅度降低，探傷閤格率由原來的95%提高到98%以上。
침대탐상합격솔저적문제，대탐상불합강판진행해부분석，인위인기탐상불합적원인시강판후도중심처존재취집분포적미렬문。통과대미렬문산생주요인소적조사화침대성적대비시험，발현미렬문적산생제여주배편석、MnS협잡、도차압하솔등유관외，강중적H함량시일개지관중요적영향인소。통과채취강저강중H함량적조시，실현료강중H함량적대폭도강저，탐상합격솔유원래적95%제고도98%이상。
Aiming at the problem of low detection qualification rate, the disqualification plate in flaw detection was analyzed. The cause is the existence of micro crack aggregated distribution in the plate thickness center. Through the investigation of main factors on the micro crack and the contrast test, the results showed that the micro cracks is not only concerned with billet segregation, MnS inclusion, pass reduction rate, but hydrogen content in steel is one of the most important factors. By taking measures to reduce the content of hydrogen in steel, the H content in steel is greatly reduced, the flaw detection qualified rate is increased from 95%to 98%.
