Post-cast EDM method for reducing the thickness of a turbine nozzle wall
A post-cast EDM process is used to remove material (34) from the interior surface of a nozzle vane cavity of a turbine. A thin electrode (28) is passed through the cavity (18) between opposite ends of the nozzle vane (16) and displaced along the interior nozzle wall to remove the material (34) along...
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| creator | BOJAPPA, PARVAGADA GANAPATHY WEI, BIN RAJAN, RAJIV SCHOTSCH, MARGARET JONES KIRKPATRICK, FRANCIS LAWRENCE JONES, RAYMOND JOSEPH |
| description | A post-cast EDM process is used to remove material (34) from the interior surface of a nozzle vane cavity of a turbine. A thin electrode (28) is passed through the cavity (18) between opposite ends of the nozzle vane (16) and displaced along the interior nozzle wall to remove the material (34) along a predetermined path, thus reducing the thickness of the wall between the cavity and the external surface of the nozzle. In another form, (not shown) an EDM process employing a profile as an electrode is disposed in the cavity and advanced against the wall to remove material from the wall until the final wall thickness is achieved, with the interior wall surface being complementary to the profile surface. |
| format | Patent |
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A thin electrode (28) is passed through the cavity (18) between opposite ends of the nozzle vane (16) and displaced along the interior nozzle wall to remove the material (34) along a predetermined path, thus reducing the thickness of the wall between the cavity and the external surface of the nozzle. In another form, (not shown) an EDM process employing a profile as an electrode is disposed in the cavity and advanced against the wall to remove material from the wall until the final wall thickness is achieved, with the interior wall surface being complementary to the profile surface.</description><edition>7</edition><language>eng ; fre ; ger</language><subject>BLASTING ; CASTING ; CASTING OF METALS ; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES ; ENGINE PLANTS IN GENERAL ; HEATING ; LIGHTING ; MACHINE TOOLS ; MACHINES OR ENGINES IN GENERAL ; MECHANICAL ENGINEERING ; METAL-WORKING NOT OTHERWISE PROVIDED FOR ; NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES ; PERFORMING OPERATIONS ; POWDER METALLURGY ; STEAM ENGINES ; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL ; TRANSPORTING ; WEAPONS ; WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OFELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKESTHE PLACE OF A TOOL</subject><creationdate>2002</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=20020515&DB=EPODOC&CC=EP&NR=1057565A3$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25543,76294</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20020515&DB=EPODOC&CC=EP&NR=1057565A3$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>BOJAPPA, PARVAGADA GANAPATHY</creatorcontrib><creatorcontrib>WEI, BIN</creatorcontrib><creatorcontrib>RAJAN, RAJIV</creatorcontrib><creatorcontrib>SCHOTSCH, MARGARET JONES</creatorcontrib><creatorcontrib>KIRKPATRICK, FRANCIS LAWRENCE</creatorcontrib><creatorcontrib>JONES, RAYMOND JOSEPH</creatorcontrib><title>Post-cast EDM method for reducing the thickness of a turbine nozzle wall</title><description>A post-cast EDM process is used to remove material (34) from the interior surface of a nozzle vane cavity of a turbine. A thin electrode (28) is passed through the cavity (18) between opposite ends of the nozzle vane (16) and displaced along the interior nozzle wall to remove the material (34) along a predetermined path, thus reducing the thickness of the wall between the cavity and the external surface of the nozzle. In another form, (not shown) an EDM process employing a profile as an electrode is disposed in the cavity and advanced against the wall to remove material from the wall until the final wall thickness is achieved, with the interior wall surface being complementary to the profile surface.</description><subject>BLASTING</subject><subject>CASTING</subject><subject>CASTING OF METALS</subject><subject>CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES</subject><subject>ENGINE PLANTS IN GENERAL</subject><subject>HEATING</subject><subject>LIGHTING</subject><subject>MACHINE TOOLS</subject><subject>MACHINES OR ENGINES IN GENERAL</subject><subject>MECHANICAL ENGINEERING</subject><subject>METAL-WORKING NOT OTHERWISE PROVIDED FOR</subject><subject>NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES</subject><subject>PERFORMING OPERATIONS</subject><subject>POWDER METALLURGY</subject><subject>STEAM ENGINES</subject><subject>SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL</subject><subject>TRANSPORTING</subject><subject>WEAPONS</subject><subject>WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OFELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKESTHE PLACE OF A TOOL</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2002</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZPAIyC8u0U1OLC5RcHXxVchNLcnIT1FIyy9SKEpNKU3OzEtXKMlIBeLM5Oy81OJihfw0hUSFktKipMy8VIW8_KqqnFSF8sScHB4G1rTEnOJUXijNzaDg5hri7KGbWpAfn1pckJicmpdaEu8aYGhgam5qZupobEyEEgDVSjMw</recordid><startdate>20020515</startdate><enddate>20020515</enddate><creator>BOJAPPA, PARVAGADA GANAPATHY</creator><creator>WEI, BIN</creator><creator>RAJAN, RAJIV</creator><creator>SCHOTSCH, MARGARET JONES</creator><creator>KIRKPATRICK, FRANCIS LAWRENCE</creator><creator>JONES, RAYMOND JOSEPH</creator><scope>EVB</scope></search><sort><creationdate>20020515</creationdate><title>Post-cast EDM method for reducing the thickness of a turbine nozzle wall</title><author>BOJAPPA, PARVAGADA GANAPATHY ; WEI, BIN ; RAJAN, RAJIV ; SCHOTSCH, MARGARET JONES ; KIRKPATRICK, FRANCIS LAWRENCE ; JONES, RAYMOND JOSEPH</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_EP1057565A33</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng ; fre ; ger</language><creationdate>2002</creationdate><topic>BLASTING</topic><topic>CASTING</topic><topic>CASTING OF METALS</topic><topic>CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES</topic><topic>ENGINE PLANTS IN GENERAL</topic><topic>HEATING</topic><topic>LIGHTING</topic><topic>MACHINE TOOLS</topic><topic>MACHINES OR ENGINES IN GENERAL</topic><topic>MECHANICAL ENGINEERING</topic><topic>METAL-WORKING NOT OTHERWISE PROVIDED FOR</topic><topic>NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES</topic><topic>PERFORMING OPERATIONS</topic><topic>POWDER METALLURGY</topic><topic>STEAM ENGINES</topic><topic>SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL</topic><topic>TRANSPORTING</topic><topic>WEAPONS</topic><topic>WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OFELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKESTHE PLACE OF A TOOL</topic><toplevel>online_resources</toplevel><creatorcontrib>BOJAPPA, PARVAGADA GANAPATHY</creatorcontrib><creatorcontrib>WEI, BIN</creatorcontrib><creatorcontrib>RAJAN, RAJIV</creatorcontrib><creatorcontrib>SCHOTSCH, MARGARET JONES</creatorcontrib><creatorcontrib>KIRKPATRICK, FRANCIS LAWRENCE</creatorcontrib><creatorcontrib>JONES, RAYMOND JOSEPH</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>BOJAPPA, PARVAGADA GANAPATHY</au><au>WEI, BIN</au><au>RAJAN, RAJIV</au><au>SCHOTSCH, MARGARET JONES</au><au>KIRKPATRICK, FRANCIS LAWRENCE</au><au>JONES, RAYMOND JOSEPH</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Post-cast EDM method for reducing the thickness of a turbine nozzle wall</title><date>2002-05-15</date><risdate>2002</risdate><abstract>A post-cast EDM process is used to remove material (34) from the interior surface of a nozzle vane cavity of a turbine. A thin electrode (28) is passed through the cavity (18) between opposite ends of the nozzle vane (16) and displaced along the interior nozzle wall to remove the material (34) along a predetermined path, thus reducing the thickness of the wall between the cavity and the external surface of the nozzle. In another form, (not shown) an EDM process employing a profile as an electrode is disposed in the cavity and advanced against the wall to remove material from the wall until the final wall thickness is achieved, with the interior wall surface being complementary to the profile surface.</abstract><edition>7</edition><oa>free_for_read</oa></addata></record> |
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| language | eng ; fre ; ger |
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| subjects | BLASTING CASTING CASTING OF METALS CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES ENGINE PLANTS IN GENERAL HEATING LIGHTING MACHINE TOOLS MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING METAL-WORKING NOT OTHERWISE PROVIDED FOR NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES PERFORMING OPERATIONS POWDER METALLURGY STEAM ENGINES SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL TRANSPORTING WEAPONS WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OFELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKESTHE PLACE OF A TOOL |
| title | Post-cast EDM method for reducing the thickness of a turbine nozzle wall |
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