Valve seat insert excellent in wear resistance made of iron-base sintered alloy for internal combustion engines, and assembly of valve seat insert and valve
A valve seat insert made of an iron-base sintered alloy is configured to have a structure in which the base matrix phase is a fine carbide precipitation phase in which a fine carbide being 10 μm or less in size is precipitated and which has a hardness of 550 HV or more in Vickers hardness; and in th...
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| creator | Oshige, Hiroshi Takaki, Seisuke Oikawa, Ayato |
| description | A valve seat insert made of an iron-base sintered alloy is configured to have a structure in which the base matrix phase is a fine carbide precipitation phase in which a fine carbide being 10 μm or less in size is precipitated and which has a hardness of 550 HV or more in Vickers hardness; and in the base matrix phase, hard-particles having a hardness of 650-1200 HV in Vickers hardness are dispersed in an area percentage of 20-40%, a diffusional phase is formed in an area percentage of more than 0% and not more than 5%, and solid-lubricant particles are dispersed in an area percentage of 0-5%. Even if a valve having a high face hardness of 400 HV or more, or 600 HV or more is used, a facing valve seat insert wears only slightly, improving valve train durability. |
| format | Patent |
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Even if a valve having a high face hardness of 400 HV or more, or 600 HV or more is used, a facing valve seat insert wears only slightly, improving valve train durability.</description><language>eng</language><subject>ACTUATING-FLOATS ; ALLOYS ; BLASTING ; CHEMISTRY ; COCKS ; COMBUSTION ENGINES ; DEVICES FOR VENTING OR AERATING ; ENGINEERING ELEMENTS AND UNITS ; FERROUS OR NON-FERROUS ALLOYS ; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS ; HEATING ; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS ; LIGHTING ; MECHANICAL ENGINEERING ; METALLURGY ; SUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLEMIXTURES OR CONSTITUENTS THEREOF ; TAPS ; THERMAL INSULATION IN GENERAL ; TREATMENT OF ALLOYS OR NON-FERROUS METALS ; VALVES ; WEAPONS</subject><creationdate>2020</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=20200331&DB=EPODOC&CC=US&NR=10605374B2$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20200331&DB=EPODOC&CC=US&NR=10605374B2$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>Oshige, Hiroshi</creatorcontrib><creatorcontrib>Takaki, Seisuke</creatorcontrib><creatorcontrib>Oikawa, Ayato</creatorcontrib><title>Valve seat insert excellent in wear resistance made of iron-base sintered alloy for internal combustion engines, and assembly of valve seat insert and valve</title><description>A valve seat insert made of an iron-base sintered alloy is configured to have a structure in which the base matrix phase is a fine carbide precipitation phase in which a fine carbide being 10 μm or less in size is precipitated and which has a hardness of 550 HV or more in Vickers hardness; and in the base matrix phase, hard-particles having a hardness of 650-1200 HV in Vickers hardness are dispersed in an area percentage of 20-40%, a diffusional phase is formed in an area percentage of more than 0% and not more than 5%, and solid-lubricant particles are dispersed in an area percentage of 0-5%. Even if a valve having a high face hardness of 400 HV or more, or 600 HV or more is used, a facing valve seat insert wears only slightly, improving valve train durability.</description><subject>ACTUATING-FLOATS</subject><subject>ALLOYS</subject><subject>BLASTING</subject><subject>CHEMISTRY</subject><subject>COCKS</subject><subject>COMBUSTION ENGINES</subject><subject>DEVICES FOR VENTING OR AERATING</subject><subject>ENGINEERING ELEMENTS AND UNITS</subject><subject>FERROUS OR NON-FERROUS ALLOYS</subject><subject>GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS</subject><subject>HEATING</subject><subject>HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS</subject><subject>LIGHTING</subject><subject>MECHANICAL ENGINEERING</subject><subject>METALLURGY</subject><subject>SUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLEMIXTURES OR CONSTITUENTS THEREOF</subject><subject>TAPS</subject><subject>THERMAL INSULATION IN GENERAL</subject><subject>TREATMENT OF ALLOYS OR NON-FERROUS METALS</subject><subject>VALVES</subject><subject>WEAPONS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2020</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNqNjrsKwkAURNNYiPoP195AfPeKYu-jlZtkIgubu2HvGs2_-LEmYmdjNXA4M0w_el3Y1iAFBzKi8IHwzGAtpAP0AHvyUKOBJQOVnINcQcY7iVPWtmokwCMnttY1VDhPHyJsKXNletdgnBDkZgQ6IZZWVUWZ2qZbqn8OdMaHDqNewVYx-uYgGu93p-0hRuWu0IozCML1fJwmq2Q5Xy82s_k_zhu5FlPG</recordid><startdate>20200331</startdate><enddate>20200331</enddate><creator>Oshige, Hiroshi</creator><creator>Takaki, Seisuke</creator><creator>Oikawa, Ayato</creator><scope>EVB</scope></search><sort><creationdate>20200331</creationdate><title>Valve seat insert excellent in wear resistance made of iron-base sintered alloy for internal combustion engines, and assembly of valve seat insert and valve</title><author>Oshige, Hiroshi ; Takaki, Seisuke ; Oikawa, Ayato</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_US10605374B23</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>2020</creationdate><topic>ACTUATING-FLOATS</topic><topic>ALLOYS</topic><topic>BLASTING</topic><topic>CHEMISTRY</topic><topic>COCKS</topic><topic>COMBUSTION ENGINES</topic><topic>DEVICES FOR VENTING OR AERATING</topic><topic>ENGINEERING ELEMENTS AND UNITS</topic><topic>FERROUS OR NON-FERROUS ALLOYS</topic><topic>GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS</topic><topic>HEATING</topic><topic>HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS</topic><topic>LIGHTING</topic><topic>MECHANICAL ENGINEERING</topic><topic>METALLURGY</topic><topic>SUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLEMIXTURES OR CONSTITUENTS THEREOF</topic><topic>TAPS</topic><topic>THERMAL INSULATION IN GENERAL</topic><topic>TREATMENT OF ALLOYS OR NON-FERROUS METALS</topic><topic>VALVES</topic><topic>WEAPONS</topic><toplevel>online_resources</toplevel><creatorcontrib>Oshige, Hiroshi</creatorcontrib><creatorcontrib>Takaki, Seisuke</creatorcontrib><creatorcontrib>Oikawa, Ayato</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Oshige, Hiroshi</au><au>Takaki, Seisuke</au><au>Oikawa, Ayato</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Valve seat insert excellent in wear resistance made of iron-base sintered alloy for internal combustion engines, and assembly of valve seat insert and valve</title><date>2020-03-31</date><risdate>2020</risdate><abstract>A valve seat insert made of an iron-base sintered alloy is configured to have a structure in which the base matrix phase is a fine carbide precipitation phase in which a fine carbide being 10 μm or less in size is precipitated and which has a hardness of 550 HV or more in Vickers hardness; and in the base matrix phase, hard-particles having a hardness of 650-1200 HV in Vickers hardness are dispersed in an area percentage of 20-40%, a diffusional phase is formed in an area percentage of more than 0% and not more than 5%, and solid-lubricant particles are dispersed in an area percentage of 0-5%. Even if a valve having a high face hardness of 400 HV or more, or 600 HV or more is used, a facing valve seat insert wears only slightly, improving valve train durability.</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | ACTUATING-FLOATS ALLOYS BLASTING CHEMISTRY COCKS COMBUSTION ENGINES DEVICES FOR VENTING OR AERATING ENGINEERING ELEMENTS AND UNITS FERROUS OR NON-FERROUS ALLOYS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING MECHANICAL ENGINEERING METALLURGY SUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLEMIXTURES OR CONSTITUENTS THEREOF TAPS THERMAL INSULATION IN GENERAL TREATMENT OF ALLOYS OR NON-FERROUS METALS VALVES WEAPONS |
| title | Valve seat insert excellent in wear resistance made of iron-base sintered alloy for internal combustion engines, and assembly of valve seat insert and valve |
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