STEEL WIRE MATERIAL FOR WIRE DRAWING
To provide a steel wire material for wire drawing capable of suppressing crack occurrence and disconnection during wire twisting, and more stably producing a steel wire having preferably high strength as a material for a wire rope and the like.SOLUTION: A steel wire material contains, by mass%, C:0....
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| creator | MATSUI NAOKI OFUJI YOSHIHIRO |
| description | To provide a steel wire material for wire drawing capable of suppressing crack occurrence and disconnection during wire twisting, and more stably producing a steel wire having preferably high strength as a material for a wire rope and the like.SOLUTION: A steel wire material contains, by mass%, C:0.80-1.10%, Si:0.35-2.00%, Mn:0.30-1.20%, Al:0.005-0.050%, P:0.030% or less, S:0.015% or less, N:0.0100% or less, O:0.0020%, and the balance having Fe and impurities, having a metallographic structure, where in a cross section perpendicular to the longitudinal direction of the steel wire material, an area ratio of pearlite is 95% or more and an area ratio of pro-eutectoid cementite is 0.50% or less, and when the average value of the Vickers hardnesses in an inside area is A, the average value of the Vickers hardnesses near the surface is B, and the standard deviation is σ, then the following formulas: 360≤A≤480, 30 |
| format | Patent |
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【課題】ワイヤロープ等の素材として好適な高い強度を有する鋼線を、撚り線加工中の割れ発生や断線を抑制してより安定して製造し得る伸線加工用鋼線材を提供する。【解決手段】質量％で、Ｃ：０．８０〜１.１０％、Ｓｉ：０．３５〜２．００％、Ｍｎ：０．３０〜１．２０％、Ａｌ：０．００５〜０．０５０％、Ｐ：０．０３０％以下、Ｓ：０．０１５％以下、Ｎ：０．０１００％以下、及びＯ：０．００２０％以下を含み、残部がＦｅ及び不純物からなり、金属組織が、鋼線材の長手方向に垂直な断面において、パーライトの面積率が９５％以上、且つ初析セメンタイトの面積率が０．５０％以下であり、内部領域のビッカース硬さの平均値をＡ、表面近傍のビッカース硬さの平均値をＢ及び標準偏差をσとした場合に、下記式を全て満たす伸線加工用鋼線材。３６０≦Ａ≦４８０３０＜Ａ−Ｂ≦７００≦σ≦２０【選択図】なし</description><language>eng ; jpn</language><subject>ALLOYS ; CHEMISTRY ; FERROUS OR NON-FERROUS ALLOYS ; METALLURGY ; TREATMENT OF ALLOYS OR NON-FERROUS METALS</subject><creationdate>2021</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=20211011&DB=EPODOC&CC=JP&NR=2021161444A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20211011&DB=EPODOC&CC=JP&NR=2021161444A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>MATSUI NAOKI</creatorcontrib><creatorcontrib>OFUJI YOSHIHIRO</creatorcontrib><title>STEEL WIRE MATERIAL FOR WIRE DRAWING</title><description>To provide a steel wire material for wire drawing capable of suppressing crack occurrence and disconnection during wire twisting, and more stably producing a steel wire having preferably high strength as a material for a wire rope and the like.SOLUTION: A steel wire material contains, by mass%, C:0.80-1.10%, Si:0.35-2.00%, Mn:0.30-1.20%, Al:0.005-0.050%, P:0.030% or less, S:0.015% or less, N:0.0100% or less, O:0.0020%, and the balance having Fe and impurities, having a metallographic structure, where in a cross section perpendicular to the longitudinal direction of the steel wire material, an area ratio of pearlite is 95% or more and an area ratio of pro-eutectoid cementite is 0.50% or less, and when the average value of the Vickers hardnesses in an inside area is A, the average value of the Vickers hardnesses near the surface is B, and the standard deviation is σ, then the following formulas: 360≤A≤480, 30<A-B≤70, and 0≤σ≤20 are all satisfied.SELECTED DRAWING: None
【課題】ワイヤロープ等の素材として好適な高い強度を有する鋼線を、撚り線加工中の割れ発生や断線を抑制してより安定して製造し得る伸線加工用鋼線材を提供する。【解決手段】質量％で、Ｃ：０．８０〜１.１０％、Ｓｉ：０．３５〜２．００％、Ｍｎ：０．３０〜１．２０％、Ａｌ：０．００５〜０．０５０％、Ｐ：０．０３０％以下、Ｓ：０．０１５％以下、Ｎ：０．０１００％以下、及びＯ：０．００２０％以下を含み、残部がＦｅ及び不純物からなり、金属組織が、鋼線材の長手方向に垂直な断面において、パーライトの面積率が９５％以上、且つ初析セメンタイトの面積率が０．５０％以下であり、内部領域のビッカース硬さの平均値をＡ、表面近傍のビッカース硬さの平均値をＢ及び標準偏差をσとした場合に、下記式を全て満たす伸線加工用鋼線材。３６０≦Ａ≦４８０３０＜Ａ−Ｂ≦７００≦σ≦２０【選択図】なし</description><subject>ALLOYS</subject><subject>CHEMISTRY</subject><subject>FERROUS OR NON-FERROUS ALLOYS</subject><subject>METALLURGY</subject><subject>TREATMENT OF ALLOYS OR NON-FERROUS METALS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2021</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZFAJDnF19VEI9wxyVfB1DHEN8nT0UXDzD4KIuAQ5hnv6ufMwsKYl5hSn8kJpbgYlN9cQZw_d1IL8-NTigsTk1LzUknivACMDI0NDM0MTExNHY6IUAQCxViM-</recordid><startdate>20211011</startdate><enddate>20211011</enddate><creator>MATSUI NAOKI</creator><creator>OFUJI YOSHIHIRO</creator><scope>EVB</scope></search><sort><creationdate>20211011</creationdate><title>STEEL WIRE MATERIAL FOR WIRE DRAWING</title><author>MATSUI NAOKI ; OFUJI YOSHIHIRO</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_JP2021161444A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng ; jpn</language><creationdate>2021</creationdate><topic>ALLOYS</topic><topic>CHEMISTRY</topic><topic>FERROUS OR NON-FERROUS ALLOYS</topic><topic>METALLURGY</topic><topic>TREATMENT OF ALLOYS OR NON-FERROUS METALS</topic><toplevel>online_resources</toplevel><creatorcontrib>MATSUI NAOKI</creatorcontrib><creatorcontrib>OFUJI YOSHIHIRO</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>MATSUI NAOKI</au><au>OFUJI YOSHIHIRO</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>STEEL WIRE MATERIAL FOR WIRE DRAWING</title><date>2021-10-11</date><risdate>2021</risdate><abstract>To provide a steel wire material for wire drawing capable of suppressing crack occurrence and disconnection during wire twisting, and more stably producing a steel wire having preferably high strength as a material for a wire rope and the like.SOLUTION: A steel wire material contains, by mass%, C:0.80-1.10%, Si:0.35-2.00%, Mn:0.30-1.20%, Al:0.005-0.050%, P:0.030% or less, S:0.015% or less, N:0.0100% or less, O:0.0020%, and the balance having Fe and impurities, having a metallographic structure, where in a cross section perpendicular to the longitudinal direction of the steel wire material, an area ratio of pearlite is 95% or more and an area ratio of pro-eutectoid cementite is 0.50% or less, and when the average value of the Vickers hardnesses in an inside area is A, the average value of the Vickers hardnesses near the surface is B, and the standard deviation is σ, then the following formulas: 360≤A≤480, 30<A-B≤70, and 0≤σ≤20 are all satisfied.SELECTED DRAWING: None
【課題】ワイヤロープ等の素材として好適な高い強度を有する鋼線を、撚り線加工中の割れ発生や断線を抑制してより安定して製造し得る伸線加工用鋼線材を提供する。【解決手段】質量％で、Ｃ：０．８０〜１.１０％、Ｓｉ：０．３５〜２．００％、Ｍｎ：０．３０〜１．２０％、Ａｌ：０．００５〜０．０５０％、Ｐ：０．０３０％以下、Ｓ：０．０１５％以下、Ｎ：０．０１００％以下、及びＯ：０．００２０％以下を含み、残部がＦｅ及び不純物からなり、金属組織が、鋼線材の長手方向に垂直な断面において、パーライトの面積率が９５％以上、且つ初析セメンタイトの面積率が０．５０％以下であり、内部領域のビッカース硬さの平均値をＡ、表面近傍のビッカース硬さの平均値をＢ及び標準偏差をσとした場合に、下記式を全て満たす伸線加工用鋼線材。３６０≦Ａ≦４８０３０＜Ａ−Ｂ≦７００≦σ≦２０【選択図】なし</abstract><oa>free_for_read</oa></addata></record> |
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| title | STEEL WIRE MATERIAL FOR WIRE DRAWING |
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