Method for controlling surface recrystallization of single-crystal directional solidification blade at low cost
The invention relates to a method for controlling surface recrystallization of a single-crystal directional solidification blade at low cost. The method comprises the following steps: S1, wax injection; s2, seeding a crystal strip; s3, mold shell preparation; and S4, a required directional single cr...
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| creator | LI WEIMING HE JIAN WANG HENGJI LU MINGANG ZHANG HONGQI ZHANG QIFAN ZHOU ZEYUAN CHENG CHUANZHENG FANG BIAO GE BINGMING YANG HONGWEI YU MENGYUAN |
| description | The invention relates to a method for controlling surface recrystallization of a single-crystal directional solidification blade at low cost. The method comprises the following steps: S1, wax injection; s2, seeding a crystal strip; s3, mold shell preparation; and S4, a required directional single crystal blade casting blank is prepared. According to the invention, a method for changing the structure of the seeding strip is adopted, so that the seeding strip can be spontaneously broken from the gap of the seeding strip in the solidification and shrinkage process of the alloy component, thereby damaging the integrity between the single crystal alloy component and the seeding strip, and greatly reducing the probability of mutual extrusion between the single crystal alloy component and the mold shell in the solidification and shrinkage process; and therefore, the surface recrystallization defect caused by the solidification shrinkage stress in the casting process of the single crystal alloy component is fundament |
| format | Patent |
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The method comprises the following steps: S1, wax injection; s2, seeding a crystal strip; s3, mold shell preparation; and S4, a required directional single crystal blade casting blank is prepared. According to the invention, a method for changing the structure of the seeding strip is adopted, so that the seeding strip can be spontaneously broken from the gap of the seeding strip in the solidification and shrinkage process of the alloy component, thereby damaging the integrity between the single crystal alloy component and the seeding strip, and greatly reducing the probability of mutual extrusion between the single crystal alloy component and the mold shell in the solidification and shrinkage process; and therefore, the surface recrystallization defect caused by the solidification shrinkage stress in the casting process of the single crystal alloy component is fundament</description><language>chi ; eng</language><subject>AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUSPOLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE ; APPARATUS THEREFOR ; CASTING ; CASTING OF METALS ; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES ; CHEMISTRY ; CRYSTAL GROWTH ; FOUNDRY MOULDING ; METALLURGY ; PERFORMING OPERATIONS ; POWDER METALLURGY ; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITHDEFINED STRUCTURE ; REFINING BY ZONE-MELTING OF MATERIAL ; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITHDEFINED STRUCTURE ; SINGLE-CRYSTAL-GROWTH ; TRANSPORTING ; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL ORUNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL</subject><creationdate>2024</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20241018&DB=EPODOC&CC=CN&NR=118788924A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76289</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20241018&DB=EPODOC&CC=CN&NR=118788924A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>LI WEIMING</creatorcontrib><creatorcontrib>HE JIAN</creatorcontrib><creatorcontrib>WANG HENGJI</creatorcontrib><creatorcontrib>LU MINGANG</creatorcontrib><creatorcontrib>ZHANG HONGQI</creatorcontrib><creatorcontrib>ZHANG QIFAN</creatorcontrib><creatorcontrib>ZHOU ZEYUAN</creatorcontrib><creatorcontrib>CHENG CHUANZHENG</creatorcontrib><creatorcontrib>FANG BIAO</creatorcontrib><creatorcontrib>GE BINGMING</creatorcontrib><creatorcontrib>YANG HONGWEI</creatorcontrib><creatorcontrib>YU MENGYUAN</creatorcontrib><title>Method for controlling surface recrystallization of single-crystal directional solidification blade at low cost</title><description>The invention relates to a method for controlling surface recrystallization of a single-crystal directional solidification blade at low cost. 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The method comprises the following steps: S1, wax injection; s2, seeding a crystal strip; s3, mold shell preparation; and S4, a required directional single crystal blade casting blank is prepared. According to the invention, a method for changing the structure of the seeding strip is adopted, so that the seeding strip can be spontaneously broken from the gap of the seeding strip in the solidification and shrinkage process of the alloy component, thereby damaging the integrity between the single crystal alloy component and the seeding strip, and greatly reducing the probability of mutual extrusion between the single crystal alloy component and the mold shell in the solidification and shrinkage process; and therefore, the surface recrystallization defect caused by the solidification shrinkage stress in the casting process of the single crystal alloy component is fundament</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUSPOLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE APPARATUS THEREFOR CASTING CASTING OF METALS CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES CHEMISTRY CRYSTAL GROWTH FOUNDRY MOULDING METALLURGY PERFORMING OPERATIONS POWDER METALLURGY PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITHDEFINED STRUCTURE REFINING BY ZONE-MELTING OF MATERIAL SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITHDEFINED STRUCTURE SINGLE-CRYSTAL-GROWTH TRANSPORTING UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL ORUNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL |
| title | Method for controlling surface recrystallization of single-crystal directional solidification blade at low cost |
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