JP2006255767A - Ni-RADICAL BUILDING UP POWDER FOR DIE USED IN HOT WORKING AND DIE FOR HOT WORKING - Google Patents
Ni-RADICAL BUILDING UP POWDER FOR DIE USED IN HOT WORKING AND DIE FOR HOT WORKING Download PDFInfo
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- 239000000843 powder Substances 0.000 title claims abstract description 26
- 239000000203 mixture Substances 0.000 claims abstract description 9
- 239000012535 impurity Substances 0.000 claims abstract description 3
- 229910052715 tantalum Inorganic materials 0.000 abstract description 6
- 229910052719 titanium Inorganic materials 0.000 abstract description 6
- 229910052804 chromium Inorganic materials 0.000 abstract description 5
- 229910052748 manganese Inorganic materials 0.000 abstract description 5
- 229910052750 molybdenum Inorganic materials 0.000 abstract description 5
- 229910052721 tungsten Inorganic materials 0.000 abstract description 5
- 229910052782 aluminium Inorganic materials 0.000 abstract description 4
- 229910052758 niobium Inorganic materials 0.000 abstract description 4
- 229910045601 alloy Inorganic materials 0.000 description 11
- 239000000956 alloy Substances 0.000 description 11
- 238000005242 forging Methods 0.000 description 11
- 230000000052 comparative effect Effects 0.000 description 9
- 230000000694 effects Effects 0.000 description 9
- 238000005336 cracking Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 229910000601 superalloy Inorganic materials 0.000 description 5
- 239000000243 solution Substances 0.000 description 4
- 229910000765 intermetallic Inorganic materials 0.000 description 3
- 238000009864 tensile test Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 238000005204 segregation Methods 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910001315 Tool steel Inorganic materials 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 150000001247 metal acetylides Chemical class 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000002436 steel type Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000004227 thermal cracking Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
Description
本発明は、高温で高耐力、高延性、低熱膨張性を有し、耐熱き裂性に優れた金型用Ｎｉ基肉盛粉末およびその粉末を用いてなる熱間用金型に関するものである。 The present invention relates to a Ni-based overlay powder for molds having high yield strength, high ductility and low thermal expansion at high temperatures and excellent heat cracking resistance, and a hot mold using the powder. .
従来より熱間鍛造用工具として、ＪＩＳ規格によるＳＫＤ６やＳＫＤ６１などの工具鋼が多く使用されている。これらは繰返し応力負荷や熱サイクルを受ける過酷な環境で使用されるため、熱き裂性や摩耗による損傷を受ける。特に熱き裂性による損傷は激しく、耐熱き裂性を改善することが熱間鍛造用工具の補修費に大きく影響している。この耐熱き裂性を改善するためには、高温において、高耐力、高延性、低熱膨張特性を有する材料が有効であり、それらの特性に優れた鋼種の開発が盛んに行われている。ただし、一般に高温耐力と高温延性は相反することが多く、両特性の両立は非常に困難である。 Conventionally, many tool steels such as SKD6 and SKD61 according to JIS standards have been used as hot forging tools. Since these are used in harsh environments subjected to repeated stress loads and thermal cycles, they are damaged by thermal cracking and wear. In particular, the damage due to hot cracking is severe, and improving the heat cracking resistance has a great influence on the repair cost of hot forging tools. In order to improve the heat cracking resistance, materials having high yield strength, high ductility, and low thermal expansion properties are effective at high temperatures, and the development of steel types excellent in these properties has been actively conducted. However, in general, high-temperature proof stress and high-temperature ductility are often contradictory, and it is very difficult to achieve both properties.
また、このような過酷な環境に耐えるため、工具鋼の表面に耐熱性に優れたＮｉ基超合金やＣｏ基合金を肉盛した肉盛工具が開発され実用化されている。しかしながら、Ｎｉ基超合金はＮｉ3 Ａｌを基本としたγ´相を強化相として析出しており高温耐力に優れる一方で、熱膨張係数が大きいため、耐熱き裂性が不十分であり、Ｃｏ基合金は炭化物析出やＣｒ，Ｍｏ，Ｗの固溶などによる強化を主としているため、５００℃を超えるような環境では高温耐力の低下が著しく、耐摩耗性、耐熱き裂性がまだ不十分である。 In order to withstand such a severe environment, a built-up tool in which a Ni-base superalloy or a Co-base alloy having excellent heat resistance is built up on the surface of tool steel has been developed and put into practical use. However, the Ni-base superalloy is precipitated with the γ ′ phase based on Ni 3 Al as the strengthening phase and is excellent in high-temperature proof stress. Since the base alloy is mainly strengthened by carbide precipitation and solid solution of Cr, Mo, W, etc., the high temperature proof stress is remarkably lowered in an environment exceeding 500 ° C, and the wear resistance and heat crack resistance are still insufficient. is there.
一方、Ｎｉ基超合金は各種市販されているが、これらは主にガスタービンおよびその周辺用材料として開発されており、１０００℃近い温度域での使用を前提に開発されているものが多く、熱間鍛造用工具の使用温度である６００℃前後での使用を前提に開発されたものでないことが多い。また、一般的に凝固偏析や脆性相を解消するため、１１００℃近い温度で固溶化処理を行い使用される。しかしながら、熱間鍛造用として肉盛された肉盛工具においては、界面割れ等の問題もあり十分な高温での固溶化処理が困難である。 On the other hand, various Ni-base superalloys are commercially available, but these are mainly developed as gas turbines and their peripheral materials, and many have been developed on the assumption that they are used in a temperature range close to 1000 ° C. In many cases, it has not been developed on the premise that the tool is used at around 600 ° C., which is the operating temperature of the tool for hot forging. In general, in order to eliminate solidification segregation and brittle phase, a solution treatment is performed at a temperature close to 1100 ° C. However, in the built-up tool built up for hot forging, there is a problem such as interface cracking and it is difficult to perform a solution treatment at a sufficiently high temperature.
従って、固溶化処理を省略した工程においても良好な特性を有することが重要となる。Ｎｉ基超合金を熱間鍛造工具の肉盛材として使用した例として、例えば特開平５−２６９５９１号公報（特許文献１）に開示されているように、熱間加工面にγ´析出相を含有するＮｉ基合金粉からなる粉末をプラズマ粉体溶接により肉盛することによりＡｌと０．８４Ｔｉを６〜１０重量％含有するＮｉ基合金からなる肉盛層を有する熱間鍛造用肉盛工具が提案されている。 Therefore, it is important to have good characteristics even in the process in which the solution treatment is omitted. As an example of using a Ni-base superalloy as a build-up material for a hot forging tool, for example, as disclosed in Japanese Patent Application Laid-Open No. 5-269591 (Patent Document 1), a γ ′ precipitate phase is formed on the hot-worked surface. Build-up tool for hot forging having a built-up layer made of a Ni-based alloy containing 6 to 10% by weight of Al and 0.84Ti by building up a powder made of Ni-containing alloy powder by plasma powder welding Has been proposed.
また、特開２００１−７１０８６号公報（特許文献２）に開示されているように、肉盛り時の応力を肉盛り層内に均等に分散させ、ヒートチェックの発生および進行を抑制して使用寿命に優れた高速四面鍛造装置用金敷および装置であって、金敷本体はＮｉ基合金であり、粉体肉盛りされたＮｉ基合金は、Ａｌ、Ｔｉ、Ｎｂ、Ｔａの１種または２種以上を、Ａｌ＋Ｔｉ＋Ｎｂ＋Ｔａの合計で３重量％以上含む作業面部がＮｉ基合金の粉体肉盛り層からなる高速四面鍛造装置用金敷およびこの金敷が組み込まれた高速四面鍛造装置について提案されている。 In addition, as disclosed in Japanese Patent Application Laid-Open No. 2001-71086 (Patent Document 2), the stress at the time of build-up is evenly distributed in the build-up layer, thereby suppressing the occurrence and progress of heat check and the service life. An anvil and apparatus for a high-speed four-sided forging device excellent in the structure, wherein the anvil main body is a Ni-based alloy, and the Ni-based alloy with powder build-up includes one or more of Al, Ti, Nb, Ta An anvil for a high-speed four-sided forging device in which the work surface portion including a total of 3% by weight or more of Al + Ti + Nb + Ta is a Ni-based alloy powder overlay layer and a high-speed four-sided forging device incorporating this anvil have been proposed.
しかしながら、特許文献１および特許文献２は確かに高耐力、高延性が実現されているが、これら特許文献におけるＮｉ基耐熱合金においても肉盛のままの状態では凝固偏析や脆性相生成があり高温延性についてはいまだ本来の特性を十分に発揮することが出来ない状況にある。さらに、耐熱き裂性に影響する熱膨張係数についても記載されていない。 However, Patent Document 1 and Patent Document 2 certainly realize high yield strength and high ductility. However, even in the Ni-base heat-resistant alloys in these patent documents, there is solidification segregation and brittle phase generation in the as-built state. As for ductility, it is still in a situation where the original characteristics cannot be fully exhibited. Furthermore, it does not describe the thermal expansion coefficient that affects the thermal crack resistance.
上述した問題を解消するために、発明者らは鋭意開発を進めた結果、使用温度が６００℃前後で、固溶化処理を省略した工程においても脆性相の生成を抑制し、高耐力、高延性を発揮でき、かつ低熱膨張特性を有するＮｉ基超合金を提供するものである。
その発明の要旨とするところは、
（１）質量％で、Ｃ：０．１％以下、Ｃｒ：１０〜１５％、Ｍｏ：８〜１５％、Ｗ：５％以下、Ｃｏ：１５％以下、Ａｌ：１〜５％、Ｔｉ：１〜５％を含み、残部Ｎｉおよび不可避的不純物よりなることを特徴とする熱間で使用する金型用Ｎｉ基肉盛粉末。
In order to solve the above-mentioned problems, the inventors have made extensive developments. As a result, the use temperature is around 600 ° C., and the formation of the brittle phase is suppressed even in the process in which the solution treatment is omitted. And a Ni-base superalloy having low thermal expansion characteristics.
The gist of the invention is that
(1) By mass%, C: 0.1% or less, Cr: 10-15%, Mo: 8-15%, W: 5% or less, Co: 15% or less, Al: 1-5%, Ti: A Ni-based build-up powder for molds used in the hot, characterized by comprising 1 to 5%, the balance being Ni and inevitable impurities.
（２）前記（１）に記載の成分組成に加え、Ｓｉ：０．５％以下、Ｍｎ：０．５％以下とすることを特徴とする熱間で使用する金型用Ｎｉ基肉盛粉末。
（３）前記（１）または（２）に記載の成分組成において、Ｓ：０．００５％以下に抑えたことを特徴とする熱間で使用する金型用Ｎｉ基肉盛粉末。
（４）前記（１）または（２）に記載の成分組成に加え、Ｎｂ：３％以下、Ｔａ：６％以下とすることを特徴とする熱間で使用する金型用Ｎｉ基肉盛粉末。
（５）前記（１）〜（４）に記載の粉末を用いたことを特徴とする熱間用金型にある。
(2) In addition to the component composition described in (1) above, Si: 0.5% or less, Mn: 0.5% or less .
(3) A Ni-based overlay powder for molds used hot, characterized in that, in the component composition described in (1) or (2), S: 0.005% or less.
(4) In addition to the component composition described in (1) or (2) above, Nb: 3% or less, Ta: 6% or less .
(5) A hot metal mold using the powder according to (1) to (4).
以上述べたように、本発明により肉盛材においても脆性相の生成を抑制し、耐熱き裂性に優れた熱間鍛造用Ｎｉ基耐熱合金を得ることができる。 As described above, according to the present invention, it is possible to obtain a Ni-based heat-resistant alloy for hot forging that suppresses the formation of a brittle phase even in the cladding material and has excellent heat cracking resistance.
以下、本発明に係る合金成分組成の限定理由について述べる。
Ｃ：０．１％以下
Ｃは、結晶粒界にＴｉ、Ｃｒ、Ｍｏ、Ｗ等と炭化物を形成し粒界強化を図るものである。しかし、０．１％を超えると粒内のＴｉ、Ｃｒ、Ｍｏ、Ｗ濃度が低下し、耐力、耐酸化性に悪影響を及ぼす。従って、その上限を０．１％とした。
Hereinafter, the reasons for limiting the alloy composition according to the present invention will be described.
C: 0.1% or less C is intended to strengthen grain boundaries by forming carbides such as Ti, Cr, Mo, and W at the grain boundaries. However, if it exceeds 0.1%, the Ti, Cr, Mo, and W concentrations in the grains decrease, and the proof stress and oxidation resistance are adversely affected. Therefore, the upper limit was made 0.1%.
Ｃｒ：１０〜１５％
Ｃｒは、高温における耐酸化性を確保するため、１０％以上の添加が必要である。しかし、１５％を超えると脆性な金属間化合物が析出し延性が低下する。従って、その範囲を１０〜１５％とした。
Ｍｏ：８〜１５％
Ｍｏは、γ相中に固溶し高温耐力を向上する効果、熱膨張係数を低くする効果をもつ元素である。しかし、８％未満ではその効果が小さく、また、１５％を超えると脆性な金属間化合物が析出し延性が低下する。従って、その範囲を８〜１５％とした。
Cr: 10-15%
Cr needs to be added in an amount of 10% or more in order to ensure oxidation resistance at high temperatures. However, if it exceeds 15%, a brittle intermetallic compound is precipitated and ductility is lowered. Therefore, the range was made 10 to 15%.
Mo: 8-15%
Mo is an element having the effect of improving the high-temperature proof stress by dissolving in the γ phase and the effect of reducing the thermal expansion coefficient. However, if it is less than 8%, the effect is small, and if it exceeds 15%, a brittle intermetallic compound is precipitated and ductility is lowered. Therefore, the range is 8-15%.
Ｗ：５％以下
Ｗは、γ相中に固溶し高温耐力を向上する効果、熱膨張係数を低くする効果があるため、５％以下の範囲で添加してもよい。しかし、５％を超えると脆性な金属間化合物が析出し延性が低下する。従って、その上限を５％とした。
Ｃｏ：１５％以下
Ｃｏは、延性を改善する効果をもつ元素である。しかし、１５％を超えるとその効果が飽和し、コストアップとなる。従って、その上限を１５％とした。
W: 5% or less W has the effect of improving the high-temperature proof stress by dissolving in the γ phase and lowering the thermal expansion coefficient, so it may be added in a range of 5% or less. However, if it exceeds 5%, a brittle intermetallic compound is precipitated and ductility is lowered. Therefore, the upper limit was made 5%.
Co: 15% or less Co is an element having an effect of improving ductility. However, if it exceeds 15%, the effect is saturated and the cost is increased. Therefore, the upper limit was made 15%.
Ａｌ：１〜５％
Ａｌは、γ´相を形成し高温耐力を向上する元素である。しかし、１％未満では効果が十分でなく、また、５％を超えると延性が低下する。従って、その範囲を１〜５％とした。 Ｔｉ：１〜５％
Ｔｉは、γ´相中のＡｌと置換しγ´相を強化する。しかし、１％未満ではその効果が十分でなく、また、５％を超えると延性が低下する。従って、その範囲を１〜５％とした。
Al: 1 to 5%
Al is an element that forms a γ 'phase and improves high-temperature yield strength. However, if it is less than 1%, the effect is not sufficient, and if it exceeds 5%, the ductility is lowered. Therefore, the range was made 1 to 5%. Ti: 1 to 5%
Ti replaces Al in the γ ′ phase and strengthens the γ ′ phase. However, if it is less than 1%, the effect is not sufficient, and if it exceeds 5%, the ductility is lowered. Therefore, the range was made 1 to 5%.
Ｓｉ：０．５％以下、Ｍｎ：０．５％以下
Ｓｉ、Ｍｎは、肉盛時の湯流れ性をよくするが、しかし、０．５％を超えると酸化物等の介在物が析出し衝撃値等の機械特性を低下させる。従って、その上限をそれぞれ０．５％とした。
Ｓ：０．００５％以下
Ｓは、０．００５％以下に抑えることで、肉盛時の高温割れを抑制することができる。それ故に、その上限を０．００５％とした。
Si: 0.5% or less, Mn: 0.5% or less Si and Mn improve the flow of hot water during overlaying, but inclusions such as oxides precipitate when the content exceeds 0.5%. Reduce mechanical properties such as impact value. Accordingly, the upper limit is set to 0.5%.
S: 0.005% or less S can be suppressed to 0.005% or less to suppress high-temperature cracking during build-up. Therefore, the upper limit was made 0.005%.
Ｎｂ：３％以下、Ｔａ：６％以下
Ｎｂ、Ｔａは、γ´相中に固溶し、耐力を向上する効果がある。しかし、それぞれ３％、６％を超えると延性が低下する。従って、その上限をそれぞれ３％、６％とした。
上述したＮｉ基肉盛粉体を用いて製造された熱間で使用される金型の代表例としては、例えばダイス、パンチ、マンドレル、ダイキャスト用金型、さらには、鍛造用マンマー等に使用される。
Nb: 3% or less, Ta: 6% or less Nb and Ta are dissolved in the γ ′ phase and have an effect of improving the yield strength. However, if it exceeds 3% and 6%, respectively, the ductility decreases. Therefore, the upper limit was made 3% and 6%, respectively.
Typical examples of hot molds manufactured using the Ni-based overlaying powder described above are used for dies, punches, mandrels, die casting molds, forging manmers, etc. Is done.
以下、本発明について実施例によって具体的に説明する。
供試材として、２５ｋｇの母材をＡｒ雰囲気中にて誘導溶解し、φ５のノズルから１６００℃にて出湯し、Ａｒガスでアトマイズし、表１に示す成分の粉末を得た。これを−２５０／＋６３μｍに分級し低合金基材に粉体プラズマアーク肉盛溶接した（１０層）。この肉盛層より引張試験片、熱膨張試験片を作製し、６００℃−４ｈの熱処理を行った。引張試験（６００℃）として、０．２％耐力（ＭＰａ）、および伸び（％）を、また、熱膨張特性（ＲＴ〜６００℃）として、熱膨張係数を示す。その結果を表１に示す。
Hereinafter, the present invention will be specifically described with reference to examples.
As a test material, 25 kg of a base material was induction-melted in an Ar atmosphere, discharged from a φ5 nozzle at 1600 ° C., and atomized with Ar gas to obtain powders of the components shown in Table 1. This was classified to −250 / + 63 μm and powder plasma arc overlay welding was performed on the low alloy substrate (10 layers). A tensile test piece and a thermal expansion test piece were prepared from this build-up layer, and subjected to heat treatment at 600 ° C. for 4 hours. As a tensile test (600 ° C.), 0.2% proof stress (MPa) and elongation (%) are shown, and as a thermal expansion characteristic (RT to 600 ° C.), a thermal expansion coefficient is shown. The results are shown in Table 1.
評価結果として、０．２％耐力については、６００℃における引張試験の結果、７００ＭＰａ以上を○、７００ＭＰａ未満を×とした。また、伸びについては、６００℃にける引張試験の結果、６％以上を○、６％未満を×とした。さらに、熱膨張特性については、ＲＴ〜６００℃における熱膨張係数が１４×１０-6未満を○、１４×１０-6以上を×とした。 As an evaluation result, about 0.2% yield strength, as a result of the tensile test at 600 ° C., 700 MPa or more was evaluated as “◯”, and less than 700 MPa was evaluated as “X”. Moreover, about elongation, as a result of the tension test in 600 degreeC, 6% or more was set to (circle) and less than 6% was set to x. Further, for the thermal expansion characteristics, thermal expansion coefficient at RT～600 ° C. is less than 14 × 10 -6 ○, and as × 14 × 10 -6 or more.
表１に示すように、Ｎｏ．１〜６は本発明例であり、Ｎｏ．７〜１４は比較例である。比較例Ｎｏ．７はＣｒ含有量が低く、かつＭｏ含有量が低いために、引張強度が低く、かつ熱膨張係数が大きい。比較例Ｎｏ．８はＭｏ含有量が高いために、伸びが劣る。比較例Ｎｏ．９はＷ含有量が高いために、伸びが劣る。比較例Ｎｏ．１０はＣ、ＡｌおよびＳｉ含有量が高いために、伸びが劣る。 As shown in Table 1, no. Nos. 1 to 6 are examples of the present invention. 7 to 14 are comparative examples. Comparative Example No. No. 7 has a low Cr content and a low Mo content, and therefore has a low tensile strength and a high thermal expansion coefficient. Comparative Example No. Eight is inferior in elongation due to the high Mo content. Comparative Example No. Since No. 9 has a high W content, the elongation is inferior. Comparative Example No. Since No. 10 has high C, Al, and Si content, elongation is inferior.
比較例Ｎｏ．１１はＴｉ、ＭｎおよびＳ含有量が高いために、伸びが劣る。比較例Ｎｏ．１２はＡｌ含有量が低いために、引張強度が劣る。比較例Ｎｏ．１３はＮｂおよびＴａ含有量が高いために、伸びが劣る。比較例Ｎｏ．１４はＴｉ含有量が低いために、引張強度が劣る。これに対し、本発明例であるＮｏ．１〜６はいずれの特性についても優れていることが分かる。
特許出願人 山陽特殊製鋼株式会社
代理人 弁理士 椎 名 彊
Comparative Example No. Since No. 11 has high Ti, Mn, and S content, elongation is inferior. Comparative Example No. No. 12 is inferior in tensile strength due to its low Al content. Comparative Example No. Since No. 13 has high Nb and Ta contents, its elongation is inferior. Comparative Example No. No. 14 is inferior in tensile strength because of its low Ti content. On the other hand, No. which is an example of the present invention. It turns out that 1-6 are excellent also about any characteristic.
Patent Applicant Sanyo Special Steel Co., Ltd.
Attorney: Attorney Shiina
Claims (5)
Ｃ：０．１％以下、
Ｃｒ：１０〜１５％、
Ｍｏ：８〜１５％、
Ｗ：５％以下、
Ｃｏ：１５％以下、
Ａｌ：１〜５％、
Ｔｉ：１〜５％
を含み、残部Ｎｉおよび不可避的不純物よりなることを特徴とする熱間で使用する金型用Ｎｉ基肉盛粉末。 % By mass
C: 0.1% or less,
Cr: 10 to 15%,
Mo: 8-15%,
W: 5% or less,
Co: 15% or less,
Al: 1 to 5%,
Ti: 1 to 5%
A Ni-based overlaying powder for molds used hot, characterized by comprising the remainder Ni and inevitable impurities.
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| CN101306494B (en) * | 2008-05-30 | 2010-06-02 | 哈尔滨工业大学 | Ni-base superalloy solder |
| JP2013059768A (en) * | 2011-09-12 | 2013-04-04 | Toshiba Corp | Ni-BASED ALLOY FOR WELDING, AND FILLER MATERIAL |
| JP2013096013A (en) * | 2011-10-31 | 2013-05-20 | Alstom Technology Ltd | Method for manufacturing component or coupon made of high temperature superalloy |
| WO2013147154A1 (en) * | 2012-03-30 | 2013-10-03 | 日立金属株式会社 | Hot forging die |
| JP2014169500A (en) * | 2013-02-28 | 2014-09-18 | Alstom Technology Ltd | Method for manufacturing hybrid component |
| WO2015019603A1 (en) * | 2013-08-07 | 2015-02-12 | 日鉄住金ハード株式会社 | Buildup welding material, straightening roll, guide roll, transporting roll, and anvil |
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| WO2013147154A1 (en) * | 2012-03-30 | 2013-10-03 | 日立金属株式会社 | Hot forging die |
| CN104203450A (en) * | 2012-03-30 | 2014-12-10 | 日立金属株式会社 | Hot forging die |
| US9597725B2 (en) | 2012-03-30 | 2017-03-21 | Hitachi Metals, Ltd. | Hot forging die |
| JP2015128794A (en) * | 2012-03-30 | 2015-07-16 | 日立金属株式会社 | Hot forging die |
| JP2015155115A (en) * | 2012-03-30 | 2015-08-27 | 日立金属株式会社 | hot forging die |
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| JP5859175B2 (en) * | 2013-08-07 | 2016-02-10 | 日鉄住金ハード株式会社 | Welding material for overlaying, straightening roll, guide roll, transport roll and anvil |
| KR101642901B1 (en) | 2013-08-07 | 2016-07-26 | 닛테츠스미킨하드 가부시키가이샤 | Buildup Welding Material, Straightening Roll, Guide Roll, Transporting Roll, and Anvil |
| JPWO2015019603A1 (en) * | 2013-08-07 | 2017-03-02 | 日鉄住金ハード株式会社 | Welding material for overlaying, straightening roll, guide roll, transport roll and anvil |
| WO2015019518A1 (en) * | 2013-08-07 | 2015-02-12 | 日鉄住金ハード株式会社 | Welding material for building-up, straightening roll, guide roll, conveyance roll and anvil |
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