机电工程技术
機電工程技術
궤전공정기술
MACHANICAL & ELECTRICAL ENGINEERING TECHNOLOGY
2014年
8期
157-160
,共4页
汽轮机%灰铸铁%隔板%断裂
汽輪機%灰鑄鐵%隔闆%斷裂
기륜궤%회주철%격판%단렬
steam turbine%gray cast iron%diaphragm%fracture
对某火力发电厂断裂的汽轮机组铸铁隔板进行了金相组织观察、硬度测试和机械结构分析。结果表明隔板的断裂主要是结构设计不合理引起的应力集中造成的。同时，对该铸件的焊接修复提出了合理化建议。
對某火力髮電廠斷裂的汽輪機組鑄鐵隔闆進行瞭金相組織觀察、硬度測試和機械結構分析。結果錶明隔闆的斷裂主要是結構設計不閤理引起的應力集中造成的。同時，對該鑄件的銲接脩複提齣瞭閤理化建議。
대모화력발전엄단렬적기륜궤조주철격판진행료금상조직관찰、경도측시화궤계결구분석。결과표명격판적단렬주요시결구설계불합리인기적응력집중조성적。동시，대해주건적한접수복제출료합이화건의。
The fracture of a gray cast-iron diaphragm in LP cylinder of steam turbine in a power plant was analyzed by means of metallographic test, hardness test and structure analysis. The results suggest that it is normal for microstructure or hardness. Fracture is mainly caused by the stress concentration due to unreasonable structural design. Meanwhile, the proposal for repair welding of gray cast iron diaphragm is put forward.
