JP4411594B2 - 冷間加工用金型 - Google Patents
冷間加工用金型 Download PDFInfo
- Publication number
- JP4411594B2 JP4411594B2 JP2004209016A JP2004209016A JP4411594B2 JP 4411594 B2 JP4411594 B2 JP 4411594B2 JP 2004209016 A JP2004209016 A JP 2004209016A JP 2004209016 A JP2004209016 A JP 2004209016A JP 4411594 B2 JP4411594 B2 JP 4411594B2
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- JP
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- base material
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- mold
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- 238000005482 strain hardening Methods 0.000 title claims description 16
- 239000000463 material Substances 0.000 claims description 46
- 229910000831 Steel Inorganic materials 0.000 claims description 29
- 239000010959 steel Substances 0.000 claims description 29
- 229910052782 aluminium Inorganic materials 0.000 claims description 11
- 238000000576 coating method Methods 0.000 claims description 11
- 239000011248 coating agent Substances 0.000 claims description 9
- 150000001875 compounds Chemical class 0.000 claims description 6
- 239000012535 impurity Substances 0.000 claims description 5
- 229910052750 molybdenum Inorganic materials 0.000 claims description 5
- 229910052721 tungsten Inorganic materials 0.000 claims description 5
- 229910052804 chromium Inorganic materials 0.000 claims description 4
- 229910052720 vanadium Inorganic materials 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 2
- 229910052748 manganese Inorganic materials 0.000 claims description 2
- 230000008859 change Effects 0.000 description 26
- 238000010438 heat treatment Methods 0.000 description 23
- 239000011159 matrix material Substances 0.000 description 18
- 238000005496 tempering Methods 0.000 description 15
- 229910001315 Tool steel Inorganic materials 0.000 description 14
- 229910000765 intermetallic Inorganic materials 0.000 description 14
- 230000000052 comparative effect Effects 0.000 description 13
- 238000000034 method Methods 0.000 description 13
- 238000001556 precipitation Methods 0.000 description 12
- 230000000694 effects Effects 0.000 description 11
- 238000012545 processing Methods 0.000 description 11
- 238000010791 quenching Methods 0.000 description 11
- 230000000171 quenching effect Effects 0.000 description 11
- 229910052759 nickel Inorganic materials 0.000 description 10
- 229910003310 Ni-Al Inorganic materials 0.000 description 8
- 230000015572 biosynthetic process Effects 0.000 description 8
- 230000008569 process Effects 0.000 description 8
- 206010040844 Skin exfoliation Diseases 0.000 description 7
- 150000001247 metal acetylides Chemical class 0.000 description 7
- 239000000203 mixture Substances 0.000 description 7
- 229910001566 austenite Inorganic materials 0.000 description 6
- 238000005229 chemical vapour deposition Methods 0.000 description 6
- 229910052802 copper Inorganic materials 0.000 description 6
- 238000013461 design Methods 0.000 description 6
- 238000000354 decomposition reaction Methods 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 238000005240 physical vapour deposition Methods 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 230000003993 interaction Effects 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 3
- 230000009471 action Effects 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
- 239000002244 precipitate Substances 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 238000005728 strengthening Methods 0.000 description 3
- 230000001629 suppression Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 238000000137 annealing Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 229910000734 martensite Inorganic materials 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000001000 micrograph Methods 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 239000006104 solid solution Substances 0.000 description 2
- 238000004381 surface treatment Methods 0.000 description 2
- 229910000859 α-Fe Inorganic materials 0.000 description 2
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- 229910000943 NiAl Inorganic materials 0.000 description 1
- NPXOKRUENSOPAO-UHFFFAOYSA-N Raney nickel Chemical compound [Al].[Ni] NPXOKRUENSOPAO-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 238000007730 finishing process Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 238000005121 nitriding Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
Landscapes
- Mounting, Exchange, And Manufacturing Of Dies (AREA)
Description
Cは一部が基地中に固溶して強度を付与し、一部は炭化物を形成することで耐摩耗性や耐焼付き性を高める重要な元素である。ここで、鋼中のCが固溶Cと炭化物になる割合は主にCrとの相互作用で決まるため、CはCrとの相互作用を認識して同時に規定することが必須である。しかし、被削性と熱処理変形安定性の両者をバランスよく満たす実用的な冷間ダイス鋼とするためにも、Cの成分範囲は単独において0.7〜1.6%とする。好ましくは、0.9〜1.3%である。
Pは靭性を阻害する元素であることから、0.05%未満、好ましくは0.02%以下に規制する。Vは焼入れ性の向上の上で添加することができるが、被削性を阻害する元素であることから、含有する場合であっても0.7%未満、好ましくは0.5%以下に制限する。
熱処理変寸量=[(熱処理後の寸法−熱処理前の寸法)
/熱処理前の寸法]×100
比較例No.2は膨張量が最も多く、変寸が大きい。これはMoを過多に含有するためである。比較例No.1,3はMo当量(Mo+W/2)が1.0%辺りの適度に調整されてこそいるが、やはり0.05%程度の膨張を起こしている。これに対し、適正量のNi,Cu,Alが添加された本発明No.1〜6は、熱処理変寸が0.01%以下に抑制されており、二次硬化領域でのNi−Al系金属間化合物の析出反応による膨張の相殺が作用していることが分かる。
ねじれ量=|[(1)〜(3)の平均変化量]
−[(1)もしくは(3)のうちの、上記平均量から最も離れた方の値]|
Claims (5)
- 質量%で、C:0.7〜1.6%未満、Si:0.5〜3.0%、Mn:0.1〜3.0%、P:0.05%未満(0%を含む)、S:0.01〜0.12%、Cr:7.0〜13.0%、MoまたはWの1種あるいは2種を(Mo+W/2):0.5〜1.7%、V:0.7%未満(0%を含む)、Ni:0.3〜1.5%、Cu:0.1〜1.0%、Al:0.1〜0.7%を含み、残部はFeおよび不可避的不純物からなる鋼を母材とし、作業面には硬質皮膜を有することを特徴とする冷間加工用金型。
- 母材は、質量%で、Ni/Al:1〜3.7を満たすことを特徴とする請求項1に記載の冷間加工用金型。
- 母材は、質量%で、(Cr−4.2×C):5以下かつ、(Cr−6.3×C):1.4以上の関係を満たすことを特徴とする請求項1または2に記載の冷間加工用金型。
- 母材は、質量%で、0.3%以下のNbを含有することを特徴とする請求項1ないし3のいずれかに記載の冷間加工用金型。
- 硬質皮膜は、MX型化合物であることを特徴とする請求項1ないし4のいずれかに記載の冷間加工用金型。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004209016A JP4411594B2 (ja) | 2004-07-15 | 2004-07-15 | 冷間加工用金型 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004209016A JP4411594B2 (ja) | 2004-07-15 | 2004-07-15 | 冷間加工用金型 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2006028584A JP2006028584A (ja) | 2006-02-02 |
JP4411594B2 true JP4411594B2 (ja) | 2010-02-10 |
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JP2004209016A Expired - Lifetime JP4411594B2 (ja) | 2004-07-15 | 2004-07-15 | 冷間加工用金型 |
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Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102350476B (zh) * | 2011-08-04 | 2014-03-26 | 攀钢集团江油长城特殊钢有限公司 | 一种高碳高铬冷作模具钢大型饼类锻件的制造方法 |
CN103834872A (zh) * | 2012-11-26 | 2014-06-04 | 天工爱和特钢有限公司 | 高耐磨性模具钢 |
CN103233168B (zh) * | 2013-05-08 | 2015-04-29 | 安泰科技股份有限公司 | 粉末冶金高韧性冷作模具钢及其制备方法 |
CN103352171B (zh) * | 2013-07-12 | 2016-12-28 | 抚顺特殊钢股份有限公司 | 一种高合金钢d2的轧制方法 |
KR101781816B1 (ko) * | 2017-01-12 | 2017-09-26 | 박명석 | 다이캐스팅 금형과 그 관련 부품의 수명 향상을 위한 복합표면처리 방법 |
CN107475606A (zh) * | 2017-06-30 | 2017-12-15 | 太仓旺美模具有限公司 | 一种耐腐蚀冷作模具钢 |
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- 2004-07-15 JP JP2004209016A patent/JP4411594B2/ja not_active Expired - Lifetime
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