JP5907120B2 - 高温強度推定方法および高温強度推定装置 - Google Patents
高温強度推定方法および高温強度推定装置 Download PDFInfo
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- JP5907120B2 JP5907120B2 JP2013117131A JP2013117131A JP5907120B2 JP 5907120 B2 JP5907120 B2 JP 5907120B2 JP 2013117131 A JP2013117131 A JP 2013117131A JP 2013117131 A JP2013117131 A JP 2013117131A JP 5907120 B2 JP5907120 B2 JP 5907120B2
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- 238000000034 method Methods 0.000 title claims description 34
- 238000012360 testing method Methods 0.000 claims description 37
- 229910000831 Steel Inorganic materials 0.000 claims description 34
- 239000010959 steel Substances 0.000 claims description 34
- 238000009864 tensile test Methods 0.000 claims description 25
- 238000000611 regression analysis Methods 0.000 claims description 12
- 239000000203 mixture Substances 0.000 claims description 11
- 238000004458 analytical method Methods 0.000 claims description 10
- 229910052750 molybdenum Inorganic materials 0.000 claims description 10
- 229910052758 niobium Inorganic materials 0.000 claims description 10
- 229910052720 vanadium Inorganic materials 0.000 claims description 7
- 229910052804 chromium Inorganic materials 0.000 claims description 6
- 229910052748 manganese Inorganic materials 0.000 claims description 6
- 229910052710 silicon Inorganic materials 0.000 claims description 6
- 229910052799 carbon Inorganic materials 0.000 claims description 5
- 239000000463 material Substances 0.000 description 22
- 238000007689 inspection Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 6
- 238000012545 processing Methods 0.000 description 6
- 238000013461 design Methods 0.000 description 5
- 229910000746 Structural steel Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 230000010365 information processing Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000015654 memory Effects 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000011490 mineral wool Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- RMLPZKRPSQVRAB-UHFFFAOYSA-N tris(3-methylphenyl) phosphate Chemical compound CC1=CC=CC(OP(=O)(OC=2C=C(C)C=CC=2)OC=2C=C(C)C=CC=2)=C1 RMLPZKRPSQVRAB-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Description
過去に実施した63本の引張強さ490N/mm2級〜780N/mm2級の建築構造用鋼材についての高温引張試験結果と、各鋼材の製品検査証に記載されたSi,Mn,Nb,Mo,V,Cr,Cの含有量のデータとに基づいて重回帰分析を行って、次式(6)に示す重回帰モデルを作成した。また、作成された重回帰モデルに基づいて各鋼材の高温強度(YS@600℃)の推定値を算出した。
Claims (3)
- 建築構造用鋼材の高温強度を推定する高温強度推定方法であって、
過去に高温引張試験および成分組成分析が実施された試験片についての高温強度の試験値と所定の成分元素の含有量と、対象製品についての所定の成分元素の含有量とを読み込む読込ステップと、
前記読込ステップで読み込まれた情報に基づいて重回帰分析を行うことにより、該対象製品の高温強度の推定値を算出する高温強度推定ステップと、を含み、
前記読込ステップで読み込まれる試験片と対象製品との成分元素の含有量には、C,Si,Mn,Nb,Mo,V,Crの含有量が含まれ、
前記高温強度推定ステップで推定される高温強度は、雰囲気温度600℃における1%歪時耐力であり、
前記高温強度推定ステップは、前記NbおよびMoの含有量に代えて、次式(1)により算出される[Nb] * と[Mo] * とのうちの少なくとも1つに基づいて重回帰分析を行うことを特徴とする高温強度推定方法。
- 建築構造用鋼材の高温強度を推定する高温強度推定装置であって、
過去に高温引張試験および成分組成分析が実施された試験片についての高温強度の試験値と所定の成分元素の含有量と、対象製品についての所定の成分元素の含有量とを読み込む読込手段と、
前記読込手段により読み込まれた情報に基づいて重回帰分析を行うことにより、該対象製品の高温強度の推定値を算出する高温強度推定手段と、を備え、
前記読込手段によって読み込まれる試験片と対象製品との成分元素の含有量には、C,Si,Mn,Nb,Mo,V,Crの含有量が含まれ、
前記高温強度推定手段によって推定される高温強度は、雰囲気温度600℃における1%歪時耐力であり、
前記高温強度推定手段は、前記NbおよびMoの含有量に代えて、次式(1)により算出される[Nb] * と[Mo] * とのうちの少なくとも1つに基づいて重回帰分析を行うことを特徴とする高温強度推定装置。
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JPS6179742A (ja) * | 1984-09-26 | 1986-04-23 | Mitsubishi Heavy Ind Ltd | 耐熱合金 |
JP3139876B2 (ja) * | 1993-04-05 | 2001-03-05 | 新日本製鐵株式会社 | 熱間鍛造用非調質鋼および非調質熱間鍛造品の製造方法ならびに非調質熱間鍛造品 |
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