JP2016539249A - 防食コーティングを具えた鋼部品およびその製造方法 - Google Patents
防食コーティングを具えた鋼部品およびその製造方法 Download PDFInfo
- Publication number
- JP2016539249A JP2016539249A JP2016541852A JP2016541852A JP2016539249A JP 2016539249 A JP2016539249 A JP 2016539249A JP 2016541852 A JP2016541852 A JP 2016541852A JP 2016541852 A JP2016541852 A JP 2016541852A JP 2016539249 A JP2016539249 A JP 2016539249A
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- JP
- Japan
- Prior art keywords
- steel
- aluminum
- steel part
- coating
- zinc
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 155
- 239000010959 steel Substances 0.000 title claims abstract description 155
- 238000000576 coating method Methods 0.000 title claims abstract description 104
- 239000011248 coating agent Substances 0.000 title claims abstract description 93
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 claims abstract description 45
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 37
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 37
- 239000011701 zinc Substances 0.000 claims abstract description 37
- 238000005260 corrosion Methods 0.000 claims abstract description 25
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 21
- 230000007797 corrosion Effects 0.000 claims abstract description 21
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 19
- 229910052751 metal Inorganic materials 0.000 claims abstract description 18
- 239000002184 metal Substances 0.000 claims abstract description 18
- 239000000463 material Substances 0.000 claims abstract description 16
- 229910052742 iron Inorganic materials 0.000 claims abstract description 14
- 238000001816 cooling Methods 0.000 claims abstract description 13
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 12
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 10
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 38
- 229910001297 Zn alloy Inorganic materials 0.000 claims description 29
- FJMNNXLGOUYVHO-UHFFFAOYSA-N aluminum zinc Chemical compound [Al].[Zn] FJMNNXLGOUYVHO-UHFFFAOYSA-N 0.000 claims description 29
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 28
- 238000010438 heat treatment Methods 0.000 claims description 25
- 229910052759 nickel Inorganic materials 0.000 claims description 19
- 239000000758 substrate Substances 0.000 claims description 18
- 239000011572 manganese Substances 0.000 claims description 17
- 229910052748 manganese Inorganic materials 0.000 claims description 16
- 238000010791 quenching Methods 0.000 claims description 15
- 230000000171 quenching effect Effects 0.000 claims description 15
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 14
- 230000008569 process Effects 0.000 claims description 12
- 238000000465 moulding Methods 0.000 claims description 9
- 238000007598 dipping method Methods 0.000 claims description 7
- CYUOWZRAOZFACA-UHFFFAOYSA-N aluminum iron Chemical compound [Al].[Fe] CYUOWZRAOZFACA-UHFFFAOYSA-N 0.000 claims description 6
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 5
- 229910052791 calcium Inorganic materials 0.000 claims description 5
- 239000011575 calcium Substances 0.000 claims description 5
- 238000009792 diffusion process Methods 0.000 claims description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 4
- 238000011161 development Methods 0.000 claims description 4
- 239000001301 oxygen Substances 0.000 claims description 4
- 229910052760 oxygen Inorganic materials 0.000 claims description 4
- 239000002994 raw material Substances 0.000 claims description 3
- 239000006104 solid solution Substances 0.000 claims description 3
- 229910052784 alkaline earth metal Inorganic materials 0.000 claims 2
- 150000001342 alkaline earth metals Chemical class 0.000 claims 2
- 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 claims 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 abstract description 10
- 239000011777 magnesium Substances 0.000 abstract description 9
- 230000001464 adherent effect Effects 0.000 abstract 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 10
- 239000001257 hydrogen Substances 0.000 description 10
- 229910052739 hydrogen Inorganic materials 0.000 description 10
- 239000012071 phase Substances 0.000 description 10
- 238000005238 degreasing Methods 0.000 description 8
- 229910000789 Aluminium-silicon alloy Inorganic materials 0.000 description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 230000008018 melting Effects 0.000 description 6
- 238000002844 melting Methods 0.000 description 6
- 238000005275 alloying Methods 0.000 description 5
- 238000005336 cracking Methods 0.000 description 5
- 239000007921 spray Substances 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 4
- 238000000137 annealing Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 4
- 238000007747 plating Methods 0.000 description 4
- 229910000712 Boron steel Inorganic materials 0.000 description 3
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- 230000032683 aging Effects 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 3
- PALQHNLJJQMCIQ-UHFFFAOYSA-N boron;manganese Chemical compound [Mn]#B PALQHNLJJQMCIQ-UHFFFAOYSA-N 0.000 description 3
- 238000005868 electrolysis reaction Methods 0.000 description 3
- 238000005246 galvanizing Methods 0.000 description 3
- KFZAUHNPPZCSCR-UHFFFAOYSA-N iron zinc Chemical compound [Fe].[Zn] KFZAUHNPPZCSCR-UHFFFAOYSA-N 0.000 description 3
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 3
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- 229910000760 Hardened steel Inorganic materials 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000005530 etching Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 238000012432 intermediate storage Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 229910018125 Al-Si Inorganic materials 0.000 description 1
- 229910018520 Al—Si Inorganic materials 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 229910000640 Fe alloy Inorganic materials 0.000 description 1
- 229910000990 Ni alloy Inorganic materials 0.000 description 1
- PGTXKIZLOWULDJ-UHFFFAOYSA-N [Mg].[Zn] Chemical compound [Mg].[Zn] PGTXKIZLOWULDJ-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 229910001566 austenite Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- QYHKLBKLFBZGAI-UHFFFAOYSA-N boron magnesium Chemical compound [B].[Mg] QYHKLBKLFBZGAI-UHFFFAOYSA-N 0.000 description 1
- 125000002091 cationic group Chemical group 0.000 description 1
- 239000010960 cold rolled steel Substances 0.000 description 1
- 238000005097 cold rolling Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000004070 electrodeposition Methods 0.000 description 1
- 238000007046 ethoxylation reaction Methods 0.000 description 1
- 150000002191 fatty alcohols Chemical class 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- QELJHCBNGDEXLD-UHFFFAOYSA-N nickel zinc Chemical compound [Ni].[Zn] QELJHCBNGDEXLD-UHFFFAOYSA-N 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Images
Classifications
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- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0068—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for particular articles not mentioned below
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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
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0247—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
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Abstract
Description
1.ジンクリッチ相を有するアルミニウム−鉄相の外層、
2.アルミニウムリッチのアルミニウム−鉄化合物の中間層、
3.拡散層(アルミニウムリッチの鉄固溶体)
4.鋼基材(MnまたはMn−B鋼)
0.3−3重量%のマンガンを含み、150−1100MPaの降伏点と300−1200MPaの引張強度とを有する焼入れした冷間ストリップを、アルカリスプレー脱脂および電解脱脂にかける。脱脂浴は約15g/lの濃度の商業用洗浄液を含み、これは25%以上の水酸化ナトリウムと、1−5%の脂肪アルコールエーテルと、5−10%のエトキシル化、プロポキシル化、およびメチル化のC12−18アルコールとを含む。浴温度は約65℃である。スプレー脱脂での滞留時間は5秒である。この後にブラシ洗浄が続く。さらなる工程において、ストリップを溶融めっきにかける。金属溶融体は、アルミニウム−亜鉛合金から構成され、これは35−70重量%のアルミニウムと、35−60重量%の亜鉛と、0.1−10重量%のマグネシウムと、0.1−10重量%までのSiと、最大で5重量%のFeとを含む。さらに、アルミニウム−亜鉛合金は、合計画分が最大で15重量%のマンガンおよび/またはニッケルを含むことが好ましく、マンガン画分を最大で0.02重量%とすることができる。アルミニウム−亜鉛合金から形成されるコーティングの全層厚は、ストリッピングノズルなどのストリッピング装置で設定され、例えば5−50μm、好ましくは10−25μmの範囲の厚さに設定する。こうしてコートされたストリップは、次いでコイルとなるように巻かれるか、所定の長さの素材板に分割され、任意の中間貯蔵のあとで、三次元に形成されてプレス焼入れされた鋼部品を製造する成形プレスに供給される。成形プレスの前にサイズ切断装置があり、これによって、製造する鋼部品の外形に適したサイズの素材板に、巻かれていないコイルまたは、通常は長方形のプレカットされた素材板からカットする。サイズにカットした後で、素材板を、鋼基材のオーステナイト化温度よりも上である成形温度まで加熱して、加熱した状態で成形プレスの鋳型の中に配置する。成形の工程で、素材板またはこれから成形した部品は、冷却型と接触することで急速冷却される。ここでの冷却速度は、部品に焼き戻したまたは硬化した微細構造を形成するように設定される。
グレード22MnB5(1.5528)の(浸した)ホットストリップを、アルカリスプレー脱脂および電解脱脂にかける。追加的に、アルカリスプレー脱脂の段階でストリップをブラシ洗浄にかける。脱脂浴は、約20g/lの濃度の商業用洗浄液を含み、これは5−10%の水酸化ナトリウムと、10−20%の水酸化カリウムとを含む。浴温度は約75℃である。さらなる工程において、ストリップを溶融めっきにかける。金属溶融体は、アルミニウム−亜鉛合金から構成され、これは35−70重量%のアルミニウムと、35−60重量%の亜鉛と、0.1−10重量%のマグネシウムと、0.1−10重量%までのSiと、最大で5重量%のFeとを含む。さらにアルミニウム−亜鉛合金は、最大で15重量%の合計画分のマンガンおよび/またはニッケルを含むことが好ましく、マンガン画分を最大で0.02重量%とすることができる。金属コーティングの全層厚は、例えば圧縮空気ノズルや不活性ガスノズルなどのストリッピング装置によって、5−50μm、好ましくは10−25μmの範囲の厚さに設定することができる。コートされたストリップは、次いでコイルに巻かれるか所定の長さの素材板に分割され、任意の中間貯蔵のあとで、プレス硬化した鋼部品を製造する成形プレスに供給される。成形プレスの前にサイズ切断装置があり、これによって、製造する鋼部品の外形に適したサイズの生地板に、巻かれていないコイル、または通常は長方形のプレカットされた素材板からカットする。サイズにカットした素材板を、次いで、製造する鋼部品の形状または予備成形物に室温で成形する(冷間成形)。次いで(予備成形した)部品を、鋼のオーステナイト化温度よりも上である部品温度まで加熱して、加熱した状態で成形プレスの冷却成形鋳型の中に配置する。冷却鋳型内で、選択的に、部品を完全に完成した状態に成形する。冷却鋳型と接っすることにより部品は急速冷却され、焼き戻したまたは硬化した微細構造を部品に形成する。
例1または2と類似するが、相違点としては、コーティングの後で成形(プレス焼入れ)の前に予備の合金化作業を実施する。この目的のために、平鋼製品または素材板を300℃から650℃の間で、好ましくは350℃から600℃の間の範囲の温度に加熱して、拡散プロセスの結果として防食コーティング内に鉄の堆積を生成する。
例1または2と類似するが、相違点としては、コーティングの後で成形(プレス焼入れ)の前にエージングと呼ばれる作業を実施する。この目的のために、平鋼製品または素材板を、50℃から300℃の範囲の温度で連続アニール炉またはトップハット炉において加熱する。
例1、2、3または4と類似するが、相違点としては、平鋼製品をアルミニウム−亜鉛合金で構成されたコーティングでコートする前に、ニッケル含有コーティングを平鋼製品にまず最初に塗布することである。ニッケル層は鋼基材の被覆性を向上させる。ニッケルコーティング(ベース層)は、電気分解で塗布されることが好ましい。ニッケルコーティングの層厚は、例えば1μmから3μmの範囲の厚さに設定される。
Claims (16)
- 腐食からの保護を提供する金属コーティングを具えた鋼部品の製造方法において、当該方法が、以下の作業工程であって:
a)150−1100MPaの降伏点と、300−1200MPaの引張強度とを有する鋼材から製作した平鋼製品を提供するステップと;
b)35−70重量%のアルミニウムと、35−60重量%の亜鉛と、0.1−10重量%のMgと、最大で10重量%のSiと、最大で5重量%のFeとを含むアルミニウム−亜鉛合金から構成された防食コーティングを、前記平鋼製品にコートするステップと;
c)コートした前記平鋼製品から構成された素材板を、少なくとも800℃の素材板温度まで加熱するステップと;
d)前記素材板から成形型内で前記鋼部品を成形するステップと;
e)前記鋼部品を焼入れるステップであって、前記鋼部品が焼き戻した微細構造または硬化した微細構造の発達に適した状態にある温度から、焼き戻したまたは硬化した微細構造が発達するのに十分な冷却速度で冷却することにより焼入れるステップと;
を具えることを特徴とする鋼部品の製造方法。 - 腐食からの保護を提供する金属コーティングを具えた鋼部品の製造方法において、当該方法が、以下の作業工程であって:
a)150−1100MPaの降伏点と、300−1200MPaの引張強度とを有する鋼材から製作した平鋼製品を提供するステップと;
b)35−70重量%のアルミニウムと、35−60重量%の亜鉛と、0.1−10重量%のMgと、最大で10重量%のSiと、最大で5重量%のFeとを含むアルミニウム−亜鉛合金から構成された防食コーティングを、前記平鋼製品にコートするステップと;
c)前記平鋼製品から構成された素材板を、成形型内で前記鋼部品に成形するステップと;
d)前記鋼部品を少なくとも800℃の部品温度まで加熱するステップと;
e)前記鋼部品を焼入れるステップであって、前記鋼部品が焼き戻した微細構造または硬化した微細構造の発達に適した状態にある温度から、焼き戻したまたは硬化した微細構造が発達するのに十分な冷却速度で冷却することにより焼入れるステップと;
を具えることを特徴とする鋼部品の製造方法。 - 請求項2に記載の方法において、前記鋼部品に成形するステップ(作業工程c)が、予備的な成形として行われ、加熱するステップ(作業工程d)の後で、前記鋼部品を完成状態に成形することを特徴とする鋼部品の製造方法。
- 請求項1乃至3のいずれか1項に記載の方法において、前記防食コーティングを構成するのに使用するアルミニウム−亜鉛合金が、カルシウム、ニッケル、マンガン、および/または他のアルカリ土類金属を含むグループから、最大15重量%の成分を含むことを特徴とする鋼部品の製造方法。
- 請求項1乃至4のいずれか1項に記載の方法において、アルミニウム−亜鉛合金から構成された前記防食コーティングを前記平鋼製品にコートするステップ(作業工程b)の前に、ニッケル含有コーティングを最初に前記平鋼製品に塗布することを特徴とする鋼部品の製造方法。
- 請求項1乃至5のいずれか1項に記載の方法において、アルミニウム−亜鉛合金から構成された前記防食コーティングを前記平鋼製品にコートした(作業工程bの)後で、前記素材板から前記鋼部品を成形する前に、前記平鋼製品または素材板を加熱処理にかけて、300℃から700℃の間で、好ましくは350℃から600℃の間の範囲の温度まで加熱して、前記防食コーティング内に鉄の堆積を生成することを特徴とする鋼部品の製造方法。
- 請求項1乃至5のいずれか1項に記載の方法において、アルミニウム−亜鉛合金から構成された前記防食コーティングを前記平鋼製品にコートした(作業工程bの)後で、前記素材板から前記鋼部品を成形する前に、前記平鋼製品または素材板を加熱処理にかけて、50℃から300℃の範囲の温度まで加熱することを特徴とする鋼部品の製造方法。
- 請求項1乃至7の何れか1項に記載の方法において、830−940℃の範囲で加熱処理を行った後に、前記防食コーティングが、前記平鋼製品の外側の方向から以下の層配列であって;
・ジンクリッチ相を有するアルミニウム−鉄相の外層と、
・アルミニウムリッチのアルミニウム−鉄化合物の中間層と、
・アルミニウムリッチの鉄固溶体の拡散層と、
を有することを特徴とする鋼部品の製造方法。 - 請求項1乃至8のいずれか1項に記載の方法において、前記素材板または部品の温度を少なくとも800℃まで加熱するステップの前に、前記防食コーティングの全層厚が、5μmから50μmの範囲で、好ましくは10μmから25μmの範囲の厚さであることを特徴とする鋼部品の製造方法。
- 請求項1乃至9のいずれか1項に記載の方法において、前記素材板または前記鋼部品を加熱するステップが、5容積%から25容積%の間の酸素を含む炉雰囲気内で行われることを特徴とする鋼部品の製造方法。
- 請求項1乃至10のいずれか1項に記載の方法において、前記素材板または前記鋼部品を加熱するステップが、乾燥空気を含む炉雰囲気内で行われることを特徴とする鋼部品の製造方法。
- 請求項1乃至11のいずれか1項に記載の方法において、アルミニウム−亜鉛合金から構成された前記防食コーティングが、溶融めっきによって前記平鋼製品に塗布されることを特徴とする鋼部品の製造方法。
- 鋼部品であって、150−1100MPaの降伏点と300−1200MPaの引張強度を有する鋼材からなる鋼基材を有し、35−70重量%のアルミニウムと、35−60重量%の亜鉛と、0.1−10重量%のMgと、最大で10重量%のSiと、最大で5重量%のFeとを含むアルミニウム−亜鉛合金から構成されて前記鋼基材に塗布されている防食コーティングを有し、当該防食コーティングが、前記鋼基材の外側の方向から、以下の層配列であって:
・ジンクリッチ相を有するアルミニウム−鉄相の外層と、
・アルミニウムリッチのアルミニウム−鉄化合物の中間層と、
・アルミニウムリッチの鉄固溶体の拡散層と、
を有することを特徴とする鋼部品。 - 請求項13に記載の鋼部品において、前記防食コーティングが、5μm以上で、好ましくは10μm以上の厚みであることを特徴とする鋼部品。
- 請求項13または14に記載の鋼部品において、前記防食コーティングが、カルシウム、ニッケル、マンガン、および/または他のアルカリ土類金属を含むことを特徴とする鋼部品。
- 請求項13乃至15のいずれか1項に記載の鋼部品において、内側の層と前記鋼基材との間に、ニッケル含有ベース層が配置されていることを特徴とする鋼部品。
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KR102301116B1 (ko) | 2021-09-10 |
CN105531385A (zh) | 2016-04-27 |
US10287647B2 (en) | 2019-05-14 |
KR20160057418A (ko) | 2016-05-23 |
EP2848709A1 (de) | 2015-03-18 |
JP6640090B2 (ja) | 2020-02-05 |
MX2016003166A (es) | 2016-06-24 |
CN105531385B (zh) | 2018-01-30 |
WO2015036151A1 (de) | 2015-03-19 |
EP2848709B1 (de) | 2020-03-04 |
US20160222484A1 (en) | 2016-08-04 |
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