JP7212077B2 - ニッケルを含有する耐摩耗性鉄系合金組成物 - Google Patents
ニッケルを含有する耐摩耗性鉄系合金組成物 Download PDFInfo
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Description
材料
表1において報告されている化学組成を有する合金粉体REF、1~8、M9及びM10を調査した。合金をガス霧化し、オーバーレイ溶接設備の粉体供給デバイスとの適合性のために53~150μmの間で篩分した。
a)PTA溶接
表1の合金1~8、M9、及びM10を、市販のPTAユニット(Commersald 300I)を使用して、EN S235JR構造用軟鋼板(mild structural steel plate)上に置いた。単層、単一のトラックのクラッドを、表2における溶接パラメータを使用して、125×40×20[mm]の寸法を有する基材上に置いた。流速16.5l/分のアルゴン及び5%H2の混合物を、メルト・プールを酸化から保護するためのシールド・ガスとして使用した。流速2.0l/分のアルゴンを、粉体をホッパからメルト・プールに移行させるために使用した。パイロット・ガスは、2.0l/分であった。表2のパラメータを用いて被覆された試料を、被覆硬さ、希釈及びミクロ組織の測定のために使用した。
レーザ・クラッディングを、Coax 8粉体供給ノズル及び5mmの円形スポットを備えたIPG 6kWファイバー付半導体レーザを使用して実施した。プロセス・ウィンドウを、典型的に、2つのレーザ走行速度、16及び8mm/秒を使用して決定した。粉体供給速度を、およそ1mm厚さの被覆をもたらすように設計した。レーザ・パワーを、1000から2500Wの間で変動させた。15l/分のアルゴンを、シールド・ガスとして使用した。6l/分のアルゴンを、粉体のための輸送ガスとして使用した。粉体を、200℃に予熱した100×35×10mmの寸法を有するEN S235JR軟鋼基材上に置いた。6つのトラックを、重複50%で置いた。調査された溶接パラメータを、表4に要約する。クラッドされた試料の断面を、光学顕微鏡法を使用して、基材への結合度、界面の多孔性及び基材からの希釈について確認した。基材への良好な結合及び<10%の希釈を有する試料を、被覆特性の評価のために選択した。
クラッドを、クラック及び他の表面疵の存在について調査した。クラッドを清潔にし(CRC Crick 110)、次いで赤色染料(CRC Crick 120)を塗布し、毛管力により表面欠陥又はクラックへと浸透させた。10分を超過した後、染料を表面から除去し、白現像剤(CRC Crick 130)を塗布した。現像剤は、割れ目、クラック又は表面と連通する他の中空の不備から浸透剤を引き出し、それらを赤色に彩色した。
PTA溶接及びレーザ・クラッディングにより表面硬化被覆へと加工されるような合金1~8の希釈、耐研磨摩耗(AW:abrasive wear)性及び硬さHRCを、表7に要約する。
Claims (15)
- ホウ素(B):1.6~2.4wt%、
炭素(C):1.7~3.0wt%、
モリブデン(Mo):16.0~19.5wt%、
ニッケル(Ni):3.5~6.5wt%、
マンガン(Mn):0.8wt%未満、
ケイ素(Si):0.2~3.0wt%、及び
バナジウム(V):10.8~13.2wt%
を含み、残部が鉄(Fe)および総量が1wt%未満の不可避不純物からなる、鉄系合金組成物。 - ケイ素の量が0.3~2.0wt%である、請求項1に記載の鉄系合金組成物。
- ホウ素の量が1.8~2.3wt%である、請求項1又は2に記載の鉄系合金組成物。
- ニッケルの量が4.2~6.1wt%である、請求項1から3までのいずれか一項に記載の鉄系合金組成物。
- 粉体組成物である、請求項1から4までのいずれか一項に記載の鉄系合金組成物。
- 前記粉体組成物の少なくとも95wt%が、300μm以下の粒子径を有し、及び/又は、
前記粉体組成物の少なくとも95wt%が、5μm以上の粒子径を有する、請求項5に記載の鉄系合金組成物。 - 基材部分と、
前記基材部分に結合された被覆と
を備える物品であって、前記被覆が、被覆材料として請求項1から6までのいずれか一項に記載の鉄系合金組成物を使用して作製される、物品。 - 前記被覆が、オーバーレイ溶接工程により付着される、請求項7に記載の物品。
- 基材材料希釈が、20%未満であり、
ここで、希釈は
((A 基材 )/(A 被覆 +A 基材 ))×100
により定義され、(A 被覆 +A 基材 )および(A 基材 )は、それぞれ、被覆の断面における総被覆面積,及びオーバーレイ溶接前に基材であった被覆の面積を表す、請求項7又は8に記載の物品。 - 前記被覆が、少なくとも60のロックウェル硬さHRCを有する、請求項7から9までのいずれか一項に記載の物品。
- 前記被覆が、ASTM G65、手順Aにより決定される耐研磨摩耗性で、15mm3未満の耐研磨摩耗性を有する、請求項7から10までのいずれか一項に記載の物品。
- 前記被覆が、球衝撃摩耗試験法により決定される衝撃摩耗で、最初のクラックの発生まで、25Jでの1撃あたりの衝撃エネルギーで少なくとも1回超の打撃、20Jでの1撃あたりの衝撃エネルギーで少なくとも5回超の打撃、10Jでの1撃あたりの衝撃エネルギーで少なくとも15回超の打撃である衝撃摩耗を有する、請求項7から11までのいずれか一項に記載の物品。
- 前記被覆が、一次硬質相ホウ化物、及びモリブデンに富むホウ化物とマルテンサイトとの共晶マトリックスを含むミクロ組織を有し、
画像分析に基づく標準的な冶金技術を使用して得られた、一次ホウ化物の体積/共晶マトリックスの体積が、0.3未満である、請求項7から12までのいずれか一項に記載の物品。 - 基材を表面硬化する方法であって、
基材を提供するステップと、
被覆材料として請求項1から6までのいずれか一項に記載の鉄系合金組成物を使用して、前記基材に被覆を付着させるステップと
を含む、方法。 - 前記被覆が、オーバーレイ溶接工程により付着させる、請求項14に記載の方法。
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Application Number | Priority Date | Filing Date | Title |
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EP18181115.9A EP3590643B1 (en) | 2018-07-02 | 2018-07-02 | Wear-resistant iron-based alloy compositions comprising nickel |
EP18181115.9 | 2018-07-02 | ||
PCT/EP2019/066834 WO2020007652A1 (en) | 2018-07-02 | 2019-06-25 | Wear-resistant iron-based alloy compositions comprising nickel |
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EP (1) | EP3590643B1 (ja) |
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EP3870727A1 (en) | 2018-10-26 | 2021-09-01 | Oerlikon Metco (US) Inc. | Corrosion and wear resistant nickel based alloys |
US11353117B1 (en) | 2020-01-17 | 2022-06-07 | Vulcan Industrial Holdings, LLC | Valve seat insert system and method |
US11421680B1 (en) | 2020-06-30 | 2022-08-23 | Vulcan Industrial Holdings, LLC | Packing bore wear sleeve retainer system |
US12049889B2 (en) | 2020-06-30 | 2024-07-30 | Vulcan Industrial Holdings, LLC | Packing bore wear sleeve retainer system |
US11421679B1 (en) | 2020-06-30 | 2022-08-23 | Vulcan Industrial Holdings, LLC | Packing assembly with threaded sleeve for interaction with an installation tool |
US11384756B1 (en) | 2020-08-19 | 2022-07-12 | Vulcan Industrial Holdings, LLC | Composite valve seat system and method |
USD980876S1 (en) | 2020-08-21 | 2023-03-14 | Vulcan Industrial Holdings, LLC | Fluid end for a pumping system |
USD986928S1 (en) | 2020-08-21 | 2023-05-23 | Vulcan Industrial Holdings, LLC | Fluid end for a pumping system |
USD997992S1 (en) | 2020-08-21 | 2023-09-05 | Vulcan Industrial Holdings, LLC | Fluid end for a pumping system |
US12055221B2 (en) | 2021-01-14 | 2024-08-06 | Vulcan Industrial Holdings, LLC | Dual ring stuffing box |
US11391374B1 (en) | 2021-01-14 | 2022-07-19 | Vulcan Industrial Holdings, LLC | Dual ring stuffing box |
CN114250463B (zh) * | 2021-12-16 | 2023-06-06 | 哈尔滨工程大学 | 具有双重吸能抗冲击的智能涂层的制备方法 |
CN114457332B (zh) * | 2022-01-23 | 2023-11-24 | 南华大学 | 修复球墨铸铁件专用铁基合金粉末及方法 |
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CN115558921B (zh) * | 2022-10-14 | 2024-04-12 | 山东银亿汇峰智能制造有限公司 | 一种激光熔覆制备钛合金非晶-中熵基耐磨材料的方法 |
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DE19508947A1 (de) | 1995-03-13 | 1996-09-19 | Patentstelle Fuer Die Deutsche | Verschleißfeste, anlaßbeständige und warmfeste Legierung |
WO2016099390A1 (en) | 2014-12-17 | 2016-06-23 | Uddeholms Ab | A wear resistant alloy |
WO2017040775A1 (en) | 2015-09-04 | 2017-03-09 | Scoperta, Inc. | Chromium free and low-chromium wear resistant alloys |
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