Method for improving performance of large-caliber thick-wall pipe obtained by casting and extrusion compound forming
The invention relates to a method for improving performance of a large-caliber thick-wall pipe obtained by casting and extrusion compound forming, and belongs to the technical field of methods for improving the performance of the large-caliber thick-wall pipe. Through the adoption of the method disc...
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| creator | LI YONGTANG HUI TIANJING JIA LU LEI BUFANG |
| description | The invention relates to a method for improving performance of a large-caliber thick-wall pipe obtained by casting and extrusion compound forming, and belongs to the technical field of methods for improving the performance of the large-caliber thick-wall pipe. Through the adoption of the method disclosed by the invention, the technical problems that the microscopic structure of a formed part is uneven and the grain size is overlarge existing in a casting and extrusion compound forming technology of a large-caliber thick-wall pipe. The technical scheme adopted by the invention lies in that the method for improving the performance of the large-caliber thick-wall pipe by casting and extrusion compound forming comprises the following steps of (1) melting alloys; (2) refining molten steel; (3) performing riser casting on the refined molten steel to obtain a hollow casting blank; (4) performing homogenizing treatment on the obtained hollow casting blank; (5) performing dephosphorization on the homogenized hollow ca |
| format | Patent |
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Through the adoption of the method disclosed by the invention, the technical problems that the microscopic structure of a formed part is uneven and the grain size is overlarge existing in a casting and extrusion compound forming technology of a large-caliber thick-wall pipe. The technical scheme adopted by the invention lies in that the method for improving the performance of the large-caliber thick-wall pipe by casting and extrusion compound forming comprises the following steps of (1) melting alloys; (2) refining molten steel; (3) performing riser casting on the refined molten steel to obtain a hollow casting blank; (4) performing homogenizing treatment on the obtained hollow casting blank; (5) performing dephosphorization on the homogenized hollow ca</description><language>chi ; eng</language><subject>AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKINGWITHOUT ESSENTIALLY REMOVING MATERIAL ; CHEMISTRY ; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS ; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS ; MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES,OTHERWISE THAN BY ROLLING ; MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL ; METALLURGY ; METALLURGY OF IRON ; MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS ; PERFORMING OPERATIONS ; PUNCHING METAL ; TRANSPORTING</subject><creationdate>2017</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=20170714&DB=EPODOC&CC=CN&NR=106947852A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20170714&DB=EPODOC&CC=CN&NR=106947852A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>LI YONGTANG</creatorcontrib><creatorcontrib>HUI TIANJING</creatorcontrib><creatorcontrib>JIA LU</creatorcontrib><creatorcontrib>LEI BUFANG</creatorcontrib><title>Method for improving performance of large-caliber thick-wall pipe obtained by casting and extrusion compound forming</title><description>The invention relates to a method for improving performance of a large-caliber thick-wall pipe obtained by casting and extrusion compound forming, and belongs to the technical field of methods for improving the performance of the large-caliber thick-wall pipe. 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The technical scheme adopted by the invention lies in that the method for improving the performance of the large-caliber thick-wall pipe by casting and extrusion compound forming comprises the following steps of (1) melting alloys; (2) refining molten steel; (3) performing riser casting on the refined molten steel to obtain a hollow casting blank; (4) performing homogenizing treatment on the obtained hollow casting blank; (5) performing dephosphorization on the homogenized hollow ca</description><subject>AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKINGWITHOUT ESSENTIALLY REMOVING MATERIAL</subject><subject>CHEMISTRY</subject><subject>GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS</subject><subject>MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS</subject><subject>MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES,OTHERWISE THAN BY ROLLING</subject><subject>MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL</subject><subject>METALLURGY</subject><subject>METALLURGY OF IRON</subject><subject>MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS</subject><subject>PERFORMING OPERATIONS</subject><subject>PUNCHING METAL</subject><subject>TRANSPORTING</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2017</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNqNjTsOwjAQRNNQIOAOywEi8Q1QoghEAxV9tHE2iYXtXdkOn9sTEAegGunN08wwiWeKLVdQswdtxfNduwaEfA8sOkXANRj0DaUKjS7JQ2y1uqUPNAZESy-UEbWjCsoXKAzxM4CuAnpG3wXNDhRb4c59X2xfj5NBjSbQ5JejZHo8XPNTSsIFBUFFjmKRX-azbLfabNeL_fIf5w2x80VG</recordid><startdate>20170714</startdate><enddate>20170714</enddate><creator>LI YONGTANG</creator><creator>HUI TIANJING</creator><creator>JIA LU</creator><creator>LEI BUFANG</creator><scope>EVB</scope></search><sort><creationdate>20170714</creationdate><title>Method for improving performance of large-caliber thick-wall pipe obtained by casting and extrusion compound forming</title><author>LI YONGTANG ; HUI TIANJING ; JIA LU ; LEI BUFANG</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_CN106947852A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>chi ; eng</language><creationdate>2017</creationdate><topic>AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKINGWITHOUT ESSENTIALLY REMOVING MATERIAL</topic><topic>CHEMISTRY</topic><topic>GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS</topic><topic>MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS</topic><topic>MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES,OTHERWISE THAN BY ROLLING</topic><topic>MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL</topic><topic>METALLURGY</topic><topic>METALLURGY OF IRON</topic><topic>MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS</topic><topic>PERFORMING OPERATIONS</topic><topic>PUNCHING METAL</topic><topic>TRANSPORTING</topic><toplevel>online_resources</toplevel><creatorcontrib>LI YONGTANG</creatorcontrib><creatorcontrib>HUI TIANJING</creatorcontrib><creatorcontrib>JIA LU</creatorcontrib><creatorcontrib>LEI BUFANG</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>LI YONGTANG</au><au>HUI TIANJING</au><au>JIA LU</au><au>LEI BUFANG</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Method for improving performance of large-caliber thick-wall pipe obtained by casting and extrusion compound forming</title><date>2017-07-14</date><risdate>2017</risdate><abstract>The invention relates to a method for improving performance of a large-caliber thick-wall pipe obtained by casting and extrusion compound forming, and belongs to the technical field of methods for improving the performance of the large-caliber thick-wall pipe. Through the adoption of the method disclosed by the invention, the technical problems that the microscopic structure of a formed part is uneven and the grain size is overlarge existing in a casting and extrusion compound forming technology of a large-caliber thick-wall pipe. The technical scheme adopted by the invention lies in that the method for improving the performance of the large-caliber thick-wall pipe by casting and extrusion compound forming comprises the following steps of (1) melting alloys; (2) refining molten steel; (3) performing riser casting on the refined molten steel to obtain a hollow casting blank; (4) performing homogenizing treatment on the obtained hollow casting blank; (5) performing dephosphorization on the homogenized hollow ca</abstract><oa>free_for_read</oa></addata></record> |
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| language | chi ; eng |
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| subjects | AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKINGWITHOUT ESSENTIALLY REMOVING MATERIAL CHEMISTRY GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES,OTHERWISE THAN BY ROLLING MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL METALLURGY METALLURGY OF IRON MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS PERFORMING OPERATIONS PUNCHING METAL TRANSPORTING |
| title | Method for improving performance of large-caliber thick-wall pipe obtained by casting and extrusion compound forming |
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