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DESIGN OF FORGING METHODS OF HEALING DEFECTS IN INGOTS EFFECTIVELY
Li Dianzhong1; Ma Xuan1,2,3; Xu Bin1,4; Sun Mingyue1,4
Corresponding AuthorXu Bin(bxu@imr.ac.cn)
2016-10-01
Source PublicationACTA METALLURGICA SINICA
ISSN0412-1961
Volume52Issue:10Pages:1199-1206
AbstractLarge forgings are the fundamental parts of many kinds of key equipment, and large ingots are the basis of large forgings. There are severe metallurgical defects in large ingots, such as porosities, shrinkage cavities and gas cavities. The continuity of material is damaged by the defects, which must be eliminated during forging process. Using FEM simulation, it is found that void shape is the most important parameter affecting void closing during hot forging. Height-diameter ratio of the void is defined to describe the effect of void shape. The simulation results show that the larger height-diameter ratio of the void, the harder it is for the void to close. Based on these results, wide anvil radial forging (WRF) method is proposed. WRF method can concentrate the strain on the center of the ingot; make the height-diameter ratio of the voids smallest and heal shrinkage cavities effectively. Another one direction heavy forging method is proposed to be used on smaller forging machines. Using this method, the billet is forged along the same direction for two passes. This method can heal defects effectively with small pressure. Based on interface healing rules, temperature dwelling forging method for forging tube plates are proposed. A tube plate with defects is repaired using this method. These forging methods have been used on industrial experiments, and have been proved to be able to heal the defects in the billets and increase qualified rate of the forgings.
Keywordvoid closure wide anvil radial forging one direction heavy forging temperature dwelling forging
Funding OrganizationNational Natural Science Foundation of China ; National Key Research and Development Program of China ; Liaoning BaiQianWan Talents Program
DOI10.11900/0412.1961.2016.00393
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[U1508215] ; National Key Research and Development Program of China[2016YFB0300401] ; Liaoning BaiQianWan Talents Program[[2015] 12]
WOS Research AreaMetallurgy & Metallurgical Engineering
WOS SubjectMetallurgy & Metallurgical Engineering
WOS IDWOS:000390080900006
PublisherSCIENCE PRESS
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/123395
Collection中国科学院金属研究所
Corresponding AuthorXu Bin
Affiliation1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
2.Shenyang Normal Univ, Coll Phys Sci & Technol, Shenyang 110034, Peoples R China
3.Dalian Univ Technol, Sch Mat Sci & Engn, Dalian 116085, Peoples R China
4.Chinese Acad Sci, Inst Met Res, Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Peoples R China
Recommended Citation
GB/T 7714
Li Dianzhong,Ma Xuan,Xu Bin,et al. DESIGN OF FORGING METHODS OF HEALING DEFECTS IN INGOTS EFFECTIVELY[J]. ACTA METALLURGICA SINICA,2016,52(10):1199-1206.
APA Li Dianzhong,Ma Xuan,Xu Bin,&Sun Mingyue.(2016).DESIGN OF FORGING METHODS OF HEALING DEFECTS IN INGOTS EFFECTIVELY.ACTA METALLURGICA SINICA,52(10),1199-1206.
MLA Li Dianzhong,et al."DESIGN OF FORGING METHODS OF HEALING DEFECTS IN INGOTS EFFECTIVELY".ACTA METALLURGICA SINICA 52.10(2016):1199-1206.
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