JP2022532680A - 高強度鋼および超高強度鋼用の改良された冷間成形工具の製造方法および冷間成形工具 - Google Patents
高強度鋼および超高強度鋼用の改良された冷間成形工具の製造方法および冷間成形工具 Download PDFInfo
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- 229910000831 Steel Inorganic materials 0.000 title description 14
- 239000010959 steel Substances 0.000 title description 14
- 239000010410 layer Substances 0.000 claims abstract description 241
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 claims abstract description 89
- 239000000463 material Substances 0.000 claims abstract description 42
- 239000012790 adhesive layer Substances 0.000 claims abstract description 36
- 238000000034 method Methods 0.000 claims abstract description 29
- 239000010936 titanium Substances 0.000 claims abstract description 28
- 238000005240 physical vapour deposition Methods 0.000 claims abstract description 16
- QRRWWGNBSQSBAM-UHFFFAOYSA-N alumane;chromium Chemical compound [AlH3].[Cr] QRRWWGNBSQSBAM-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 15
- 229910000797 Ultra-high-strength steel Inorganic materials 0.000 claims abstract description 12
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910052751 metal Inorganic materials 0.000 claims abstract description 10
- 239000002184 metal Substances 0.000 claims abstract description 10
- 238000004519 manufacturing process Methods 0.000 claims abstract description 9
- 239000007769 metal material Substances 0.000 claims abstract description 7
- 229910052782 aluminium Inorganic materials 0.000 claims description 45
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 41
- 238000000576 coating method Methods 0.000 claims description 26
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 26
- 239000011248 coating agent Substances 0.000 claims description 24
- 229910052757 nitrogen Inorganic materials 0.000 claims description 19
- 239000000203 mixture Substances 0.000 claims description 10
- CXOWYMLTGOFURZ-UHFFFAOYSA-N azanylidynechromium Chemical compound [Cr]#N CXOWYMLTGOFURZ-UHFFFAOYSA-N 0.000 claims description 9
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 claims description 8
- 239000011651 chromium Substances 0.000 claims description 6
- 238000000465 moulding Methods 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 4
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims 4
- 229910002092 carbon dioxide Inorganic materials 0.000 claims 2
- 239000001569 carbon dioxide Substances 0.000 claims 2
- 238000005256 carbonitriding Methods 0.000 claims 1
- UQZIWOQVLUASCR-UHFFFAOYSA-N alumane;titanium Chemical compound [AlH3].[Ti] UQZIWOQVLUASCR-UHFFFAOYSA-N 0.000 abstract description 5
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 23
- 239000000758 substrate Substances 0.000 description 18
- 230000035882 stress Effects 0.000 description 12
- 230000000694 effects Effects 0.000 description 7
- 238000007740 vapor deposition Methods 0.000 description 7
- 244000000626 Daucus carota Species 0.000 description 6
- 235000002767 Daucus carota Nutrition 0.000 description 6
- 239000000314 lubricant Substances 0.000 description 6
- 239000012495 reaction gas Substances 0.000 description 6
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 5
- 238000000227 grinding Methods 0.000 description 5
- 238000005259 measurement Methods 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 4
- 238000005121 nitriding Methods 0.000 description 4
- 239000012071 phase Substances 0.000 description 4
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 229910052804 chromium Inorganic materials 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 238000000151 deposition Methods 0.000 description 3
- 230000008021 deposition Effects 0.000 description 3
- 150000004767 nitrides Chemical class 0.000 description 3
- 230000035515 penetration Effects 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910000997 High-speed steel Inorganic materials 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- QQHSIRTYSFLSRM-UHFFFAOYSA-N alumanylidynechromium Chemical group [Al].[Cr] QQHSIRTYSFLSRM-UHFFFAOYSA-N 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000005482 strain hardening Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 229910017150 AlTi Inorganic materials 0.000 description 1
- 229910001335 Galvanized steel Inorganic materials 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- RJRPCMREZGLMKP-UHFFFAOYSA-N [Ti].O=C=O Chemical compound [Ti].O=C=O RJRPCMREZGLMKP-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
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- 239000010406 cathode material Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
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- 238000010276 construction Methods 0.000 description 1
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- 238000009792 diffusion process Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000008397 galvanized steel Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical group [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 238000005461 lubrication Methods 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
- 230000007246 mechanism Effects 0.000 description 1
- 239000012778 molding material Substances 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- JMANVNJQNLATNU-UHFFFAOYSA-N oxalonitrile Chemical compound N#CC#N JMANVNJQNLATNU-UHFFFAOYSA-N 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- GPPXJZIENCGNKB-UHFFFAOYSA-N vanadium Chemical compound [V]#[V] GPPXJZIENCGNKB-UHFFFAOYSA-N 0.000 description 1
- 238000001947 vapour-phase growth Methods 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
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- 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
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Abstract
Description
「熱間成形」とは、金属の再結晶化温度を超えて行われる成形ステップの全てを指す。一般に、熱間成形にはより低い成形力が求められ、さらに、当該成形中は被加工物の冷間加工硬化は生じない。
その特性により、これらの材料は、従来の車体鋼の場合よりも大幅に高い力で成形工具に抵抗する。
請求項1に従属する従属請求項には、有利な変形例を開示する。
この目的は、請求項9の特徴を有する冷間成形工具で達成される。
請求項9に従属する従属請求項には、有利な変形例を開示する。
PVDコーティングの生成(物理蒸着)は長く知られており、とりわけ工具に、特に切断工具に用いられている。
特に有利な一実施形態では、窒化クロムアルミニウム層と窒化チタンアルミニウム層のそれぞれについて0.2μmから0.3μmの層厚の組み合わせが選択される。弾性がやや高い方の層と靭性がやや高い方の層の相互作用を通して、例えば、亀裂成長を緩やかにすることができ、したがって工具のより長い耐用年数を確保することができる。
図1は、第一の実施形態において、基材1上に窒化チタン接着剤層2を有し、交互になった窒化チタンアルミニウム層3と窒化クロムアルミニウム層4をそれぞれ十五層ずつと、窒化チタン最上層5とを含有するサンプル層構造を示し、窒化チタン接着剤層2の直後には窒化チタンアルミニウム層3が続いている。
図面には、窒化チタン最上層の代わりの炭窒化チタン最上層のサンプル使用は示していない。
本例における層の化学組成は、窒化チタンにおける約45at%のチタンおよび約55at%の窒素、窒化クロムアルミニウムにおける約35at%のアルミニウム、約15at%のクロム、および約50at%の窒素からなるのに対し、窒化チタンアルミニウムには、約11at%のアルミニウム、35at%のチタン、および45at%の窒素が含有されている。
ストローク速度:160~170ストローク/分
送り速度(1.5mm厚鋼板):8m/分
圧力:72,500~74,000N
2 窒化チタン接着剤層(TiN接着剤層)
3 窒化チタンアルミニウム層(AlTiN層)
4 窒化クロムアルミニウム層(AlCrN層)
5 窒化チタン最上層(TiN最上層)
6 成形表面
Claims (11)
- 特に超高強度鋼を冷間成形するための冷間成形工具の製造方法であって、
前記冷間成形工具が、成形工具組の上側工具および/または下側工具であり、前記冷間成形工具が、金属材料(1)から作られ、成形された金属板が部品の所望の最終輪郭を有するように設計された成形表面(6)を有し、
物理気相成長によって前記成形工具の前記成形表面(6)に硬質材料層が蒸着され、当該硬質材料層は、窒化チタン接着剤層(2)と、当該窒化チタン接着剤層(2)に蒸着された、窒化チタンアルミニウム層(3)および窒化クロムアルミニウム層(4)の交互の層とからなり、窒化チタン最上層(5)または炭窒化チタン最上層が、成形対象の被加工物の方に向けられる最も外側の外表面を、最終層として蒸着されることを特徴とする方法。 - 前記交互の蒸着層の最初の層として、まず窒化チタンアルミニウム層(3)が前記窒化チタン接着剤層(2)に蒸着されることを特徴とする、請求項1に記載の方法。
- 最終的な窒化チタン最上層(5)または炭窒化チタン最上層が蒸着される前に、前記窒化チタン接着剤層(2)に5から20の交互層が蒸着されることを特徴とする、請求項1または2に記載の方法。
- 前記窒化チタン接着剤層(2)は、0.2マイクロメートルから0.9マイクロメートル、好ましくは0.4マイクロメートルから0.7マイクロメートルの厚みを有することを特徴とする、請求項1から3のいずれか一項に記載の方法。
- 前記窒化チタンアルミニウム層(3)は、0.1マイクロメートルから0.5マイクロメートル、好ましくは0.2マイクロメートルから0.3マイクロメートルの厚みを有することを特徴とする、請求項1から4のいずれか一項に記載の方法。
- 前記窒化クロムアルミニウム層(4)は、0.1マイクロメートルから0.5マイクロメートル、好ましくは0.2マイクロメートルから0.3マイクロメートルの厚みを有することを特徴とする、請求項1から5のいずれか一項に記載の方法。
- 最終の前記窒化チタン最上層(5)または炭窒化チタン最上層は、0.2マイクロメートルから0.5マイクロメートル、好ましくは0.2マイクロメートルから0.3マイクロメートルの厚みを有することを特徴とする、請求項1から6のいずれか一項に記載の方法。
- 各層の化学組成は次の通り、すなわち、接着剤層および最上層のTizN1-zにおいて、z=0.4から0.6、代替的な最上層としてのTixCyN1-(x+y)において、x=44から50、y=20から23、かつ残部が窒素、AlaCrbN1-(a+b)において、a=30から40、b=10から20、かつ残部が窒素、AlcTidN1-(c+d)において、c=8から14、d=30から40、かつ残部が窒素であることを特徴とする、請求項1から7のいずれか一項に記載の方法。
- 特に請求項1~8のいずれか一項に記載の方法を用いて蒸着された硬質材料コーティングを有する冷間成形工具。
- 前記硬質材料の層は、窒化チタンアルミニウム層(3)および窒化クロムアルミニウム層(4)の交互の層と、最終の窒化チタン最上層(5)または炭窒化チタン最上層とから構成されることを特徴とする、請求項9に記載の冷間成形工具。
- 工具上の最初の層として窒化チタン接着剤層(2)が存在し、前記窒化チタンアルミニウム層(3)および窒化クロムアルミニウム層(4)と、最終の前記窒化チタン最上層(5)または炭窒化チタン最上層とが続くことを特徴とする、請求項9または10に記載の冷間成形工具。
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