大型铸锻件
大型鑄鍛件
대형주단건
HEAVY CASTING AND FORGING
2015年
5期
38-42
,共5页
巴钧涛%高建军%李金良%王欢%邵奎祥
巴鈞濤%高建軍%李金良%王歡%邵奎祥
파균도%고건군%리금량%왕환%소규상
20MnMoNb%锻件%缺陷%解剖分析
20MnMoNb%鍛件%缺陷%解剖分析
20MnMoNb%단건%결함%해부분석
20MnMoNb%forging%defect%dissection and analysis
我公司生产的20MnMoNb某大型锻件在调质热处理后，经超声检测发现有600多处缺陷。经解剖分析，超标处为钢锭A偏析区域内的微裂纹，且微裂纹内偏聚着硫化物夹杂和少量的锰、钼、铌合金元素。
我公司生產的20MnMoNb某大型鍛件在調質熱處理後，經超聲檢測髮現有600多處缺陷。經解剖分析，超標處為鋼錠A偏析區域內的微裂紋，且微裂紋內偏聚著硫化物夾雜和少量的錳、鉬、鈮閤金元素。
아공사생산적20MnMoNb모대형단건재조질열처리후，경초성검측발현유600다처결함。경해부분석，초표처위강정A편석구역내적미렬문，차미렬문내편취착류화물협잡화소량적맹、목、니합금원소。
After quenching and tempering heat treatment, a certain 20MnMoNb heavy forging produced by our company appeared more than 600 defects through ultrasonic testing.By dissecting and analyzing, the defects out of tolerance are microcracks in A segregation area of ingot.Meanwhile, there are sulfide inclusions and a small quantity of manganese, molybdenum and niobium alloying element in the microcracks.
