失效分析与预防
失效分析與預防
실효분석여예방
FAILURE ANALYSIS AND PREVENTION
2015年
2期
102-106
,共5页
李东东%王影%谷胜民%王唐超%刘涛%林德健
李東東%王影%穀勝民%王唐超%劉濤%林德健
리동동%왕영%곡성민%왕당초%류도%림덕건
铝合金锻件%线状缺陷%折叠
鋁閤金鍛件%線狀缺陷%摺疊
려합금단건%선상결함%절첩
aluminum alloy forging%linear defect%folding defect
5A06铝合金锻件在加工过程中发现线状缺陷，对此锻件进行缺陷形貌观察以及金相、断口、硬度和成分分析，结合其制造工艺，分析认为：铝锻件端面的线状缺陷为锻造折叠缺陷；此缺陷破坏了铝锻件的金属连续性，降低了铝锻件的承载能力；缺陷应由锻造工艺控制不当所致，形成于冲孔、环锻工序；在铝锻件的出厂检验及到货验收环节，增加超声波检测及上下端面的荧光检查，可以有效地剔除存在此类缺陷的锻件产品。
5A06鋁閤金鍛件在加工過程中髮現線狀缺陷，對此鍛件進行缺陷形貌觀察以及金相、斷口、硬度和成分分析，結閤其製造工藝，分析認為：鋁鍛件耑麵的線狀缺陷為鍛造摺疊缺陷；此缺陷破壞瞭鋁鍛件的金屬連續性，降低瞭鋁鍛件的承載能力；缺陷應由鍛造工藝控製不噹所緻，形成于遲孔、環鍛工序；在鋁鍛件的齣廠檢驗及到貨驗收環節，增加超聲波檢測及上下耑麵的熒光檢查，可以有效地剔除存在此類缺陷的鍛件產品。
5A06려합금단건재가공과정중발현선상결함，대차단건진행결함형모관찰이급금상、단구、경도화성분분석，결합기제조공예，분석인위：려단건단면적선상결함위단조절첩결함；차결함파배료려단건적금속련속성，강저료려단건적승재능력；결함응유단조공예공제불당소치，형성우충공、배단공서；재려단건적출엄검험급도화험수배절，증가초성파검측급상하단면적형광검사，가이유효지척제존재차류결함적단건산품。
5A06 aluminum alloy forging was found to have linear defect in the machining process. In order to find out the failure cause, morphological observation, metallographic structure examination, fracture surface analysis, hardness analysis and chemical composition analysis were carried out. The result shows that the linear defect is folding defect. It destroyed the continuity of metal and reduced the load capacity of the aluminum alloy forging. The defect may be caused by the inappropriate control in the forging process. It formed during the process of punching and ring forging. In the process of delivery inspection and acceptance test, the forging with the linear defect can be eliminated effectively by adding the ultrasonic inspection and fluoroscope.
