JP2018535313A - Znガルバニール処理保護コーティングを有する平鋼製品およびその製造方法 - Google Patents
Znガルバニール処理保護コーティングを有する平鋼製品およびその製造方法 Download PDFInfo
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 139
- 239000010959 steel Substances 0.000 title claims abstract description 139
- 239000011253 protective coating Substances 0.000 title claims abstract description 48
- 238000004519 manufacturing process Methods 0.000 title claims description 12
- 238000005259 measurement Methods 0.000 claims abstract description 101
- 239000000758 substrate Substances 0.000 claims abstract description 43
- 239000011701 zinc Substances 0.000 claims abstract description 39
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 16
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 15
- 238000007598 dipping method Methods 0.000 claims abstract description 14
- 238000011156 evaluation Methods 0.000 claims abstract description 12
- 238000012876 topography Methods 0.000 claims abstract description 4
- 238000000576 coating method Methods 0.000 claims description 39
- 239000011248 coating agent Substances 0.000 claims description 37
- 239000011148 porous material Substances 0.000 claims description 26
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 24
- 238000000137 annealing Methods 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 18
- 238000012360 testing method Methods 0.000 claims description 18
- 239000000463 material Substances 0.000 claims description 13
- 229910052710 silicon Inorganic materials 0.000 claims description 12
- 229910052742 iron Inorganic materials 0.000 claims description 11
- 238000010438 heat treatment Methods 0.000 claims description 10
- 239000012535 impurity Substances 0.000 claims description 9
- 239000012298 atmosphere Substances 0.000 claims description 8
- 238000001953 recrystallisation Methods 0.000 claims description 7
- 229910052782 aluminium Inorganic materials 0.000 claims description 6
- 229910052799 carbon Inorganic materials 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 6
- 229910052719 titanium Inorganic materials 0.000 claims description 6
- 229910052748 manganese Inorganic materials 0.000 claims description 5
- 229910052757 nitrogen Inorganic materials 0.000 claims description 5
- 229910052698 phosphorus Inorganic materials 0.000 claims description 5
- 229910052717 sulfur Inorganic materials 0.000 claims description 5
- 229910052758 niobium Inorganic materials 0.000 claims description 4
- 229910001297 Zn alloy Inorganic materials 0.000 claims description 3
- 238000007747 plating Methods 0.000 claims description 3
- 238000000227 grinding Methods 0.000 description 13
- 238000009826 distribution Methods 0.000 description 11
- 230000001681 protective effect Effects 0.000 description 11
- 230000001070 adhesive effect Effects 0.000 description 10
- 238000005452 bending Methods 0.000 description 10
- 239000000853 adhesive Substances 0.000 description 9
- 230000015572 biosynthetic process Effects 0.000 description 9
- 239000010410 layer Substances 0.000 description 9
- 229910045601 alloy Inorganic materials 0.000 description 8
- 239000000956 alloy Substances 0.000 description 8
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 7
- 239000010703 silicon Substances 0.000 description 7
- 238000000465 moulding Methods 0.000 description 6
- 239000002245 particle Substances 0.000 description 6
- 239000010936 titanium Substances 0.000 description 5
- 238000005275 alloying Methods 0.000 description 4
- 230000007423 decrease Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000010955 niobium Substances 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000011572 manganese Substances 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000002390 adhesive tape Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000011247 coating layer Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910000640 Fe alloy Inorganic materials 0.000 description 1
- 240000006829 Ficus sundaica Species 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000001995 intermetallic alloy Substances 0.000 description 1
- KFZAUHNPPZCSCR-UHFFFAOYSA-N iron zinc Chemical compound [Fe].[Zn] KFZAUHNPPZCSCR-UHFFFAOYSA-N 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 239000002436 steel type Substances 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/01—Layered products comprising a layer of metal all layers being exclusively metallic
- B32B15/013—Layered products comprising a layer of metal all layers being exclusively metallic one layer being formed of an iron alloy or steel, another layer being formed of a metal other than iron or aluminium
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/18—Layered products comprising a layer of metal comprising iron or steel
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/005—Heat treatment of ferrous alloys containing Mn
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/008—Heat treatment of ferrous alloys containing Si
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/46—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C18/00—Alloys based on zinc
- C22C18/04—Alloys based on zinc with aluminium as the next major constituent
-
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/001—Ferrous alloys, e.g. steel alloys containing N
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- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
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- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/14—Ferrous alloys, e.g. steel alloys containing titanium or zirconium
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
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- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
- C23C2/022—Pretreatment of the material to be coated, e.g. for coating on selected surface areas by heating
- C23C2/0224—Two or more thermal pretreatments
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
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Abstract
Description
−鋼基材を提供する工程、
−露点−40℃〜−20℃のN2−およびH2−含有アニーリング雰囲気下で、800〜850℃のアニーリング温度での鋼基材の再結晶アニーリング工程、
−再結晶アニーリングされた基材を440〜480℃の浴入口温度に冷却する工程、
−冷却された鋼基材をZnまたはZn合金からなる溶融浴に通すことによって鋼基材を保護コーティングで溶融めっきする工程、
−ガルバニール処理保護コーティングを得るための、500〜570℃のアニーリング温度での溶融めっき後に得られた平鋼製品の熱処理工程、
および
−熱処理後に得られた平鋼製品を室温まで冷却する工程。
Claims (10)
- 鋼基材と、溶融めっきにより前記鋼基材に適用され、後続のガルバニール処理により製造された、その主成分としての亜鉛を有する保護コーティングとを有する平鋼製品であって、前記保護コーティングが、その自由表面において前記保護コーティング内に延びる細孔を有し、トポグラフィ試験で決定された右に歪んだ測定トレースの割合は、測定方向と測定方向を横断する方向との両方において右に歪んでいない測定トレースの割合よりも優勢であり、ここで前記右に歪んだ測定トレースは、少なくとも400の平行な測定トレースについて1mmのエッジ長さを有する正方形の表面セクションにおいて、それぞれの場合に少なくとも10000の測定の測定集合が記録され、測定方向および測定方向を横断する方向で記録された前記測定集合の各々について平均値および中央値が確認され、各測定トレースについて確認された平均値が、それについて確認された中央値と比較され、平均値が中央値(medium)より大きい測定トレースが、右に歪んでいると分類される点において決定されることを特徴とする、平鋼製品。
- 測定方向の評価において、前記右に歪んだトレースの割合がすべてのトレースの少なくとも60%であることを特徴とする、請求項1に記載の平鋼製品。
- 測定方向を横断する方向の評価において、右に歪んだトレースの割合が、すべてのトレースの少なくとも60%であることを特徴とする、請求項1から2のいずれかに記載の平鋼製品。
- 前記鋼基材が軟質IF鋼から製造されていることを特徴とする、請求項1から3のいずれかに記載の平鋼製品。
- 前記鋼基材の鋼が、(重量%で)0.05%までのC、0.2%までのSi、0.5〜0.18%のMn、0.02%までのP、0.02%までのS、0.01〜0.06%のAl、0.005%までのN、0.02〜0.1%のTi、0.0005%までのBからなり、残部は鉄および技術的に不可避の不純物であることを特徴とする、請求項1から4のいずれかに記載の平鋼製品。
- 前記鋼基材の鋼が、(重量%で)0.2%までのC、0.5%までのSi、1.5%までのMn、0.02%までのP、0.01%までのS、0.1%までのAl、0.01〜0.03%までのNb、0.005%までのN、0.02〜0.08%までのTi、0.0007%までのBからなり、残部は鉄および不可避の不純物であることを特徴とする、請求項1から4のいずれかに記載の平鋼製品。
- 前記保護コーティングの厚さが10μmまでであることを特徴とする、請求項1から6のいずれかに記載の平鋼製品。
- 平鋼製品として予め製作された鋼基材と、これに適用されたZnをその主成分として有するガルバニール処理保護コーティングとを含む平鋼製品を製造する方法であって、以下の工程:
−前記鋼基材を提供する工程、
−露点−40℃〜−20℃のN2−およびH2−含有アニーリング雰囲気下で、800〜850℃のアニーリング温度での前記鋼基材の再結晶アニーリング工程、
−前記再結晶アニーリングされた基材を440〜480℃の浴入口温度に冷却する工程、
−前記冷却された鋼基材をZnまたはZn合金からなる溶融浴に通すことによって前記鋼基材を前記保護コーティングで溶融めっきする工程、
−前記ガルバニール処理保護コーティングを得るための、500〜570℃のアニーリング温度での前記溶融めっき後に得られた前記平鋼製品の熱処理工程、
および
−前記熱処理後に得られた前記平鋼製品を室温まで冷却する工程
を含む方法。 - 前記溶融浴が、0.1〜0.15重量%のAlおよび0.5重量%までのFeからなり、残部が亜鉛および不可避の不純物からなることを特徴とする、請求項8に記載の方法。
- 以下の工程:
−当該表面セクションが1mmのエッジ長さを有するZnコーティングの正方形の表面セクションにおいて少なくとも400の平行に配列された測定トレースについて、それぞれの場合に少なくとも10000の測定の測定集合を記録する工程、
−各測定集合の測定の平均値および中央値を測定方向において決定し、平均値が中央値よりも大きい測定トレースのみを右に歪んでいるとみなす工程、
−測定方向を横断する方向での各測定集合の測定の平均値および中央値を決定し、平均値が中央値よりも大きい測定トレースのみを右に歪んでいるとみなす工程、
−測定方向のすべての測定トレースにおける右に歪んだ測定トレースの割合を決定する工程、
−測定方向を横断する方向のすべての測定トレースにおける右に歪んだ測定トレースの割合を決定する工程、
−測定方向における前記右に歪んだ測定トレースの割合と、測定方向を横断する方向における右に歪んだ測定トレースの割合とを、少なくとも60%の限度で比較し、測定方向および測定方向を横断する方向の両方において前記右に歪んだ測定トレースの割合が、少なくとも前記限度に対応する前記Znコーティングの表面を多孔質であるとみなし、一方で測定方向で右に歪んだ測定トレースの割合または測定方向を横断する方向において右に歪んだ測定トレースの割合のいずれかが前記限度未満であるサンプルを非多孔質とみなす工程
を含む、ガルバニール処理Znコーティングでコーティングされた平鋼製品の表面の多孔性を評価する方法。
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US20180312955A1 (en) | 2018-11-01 |
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