JP6220394B2 - 電鋳により得られる銀又は銀合金製内面を有する調理器具物品を製造する製造方法 - Google Patents
電鋳により得られる銀又は銀合金製内面を有する調理器具物品を製造する製造方法 Download PDFInfo
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Description
アームコ鉄鍋を研磨し、製造により発生した物理的な凹凸を除く。その後、鍋を炉内で、窒化力PN=0.95の解離アンモニア雰囲気NH3/H2において550℃で4時間窒化する。窒素中で洗浄後、同一の炉内で490℃又は520℃の温度で水蒸気に浸すことで鍋を2時間酸化する。鍋の内側を布で鏡面研磨して、酸化層及び窒化層の一部を取り除く。最後に、鍋を中心銀陽極を用いた市販のアルカリ性シアン化物銀めっき溶液へと導入し、再循環ポンプによりその溶液を連続供給することで内面を銀めっきする。この銀の電鋳は、厚さが0.1mmに達するまで続ける。この銀めっきでは、初期の光沢が保たれており、さらに研磨する必要はない。
アームコ鉄平鍋を研磨し、製造により発生した物理的な凹凸を除く。その後、平鍋を炉内で、窒化力PN=0.90の解離アンモニアNH3/H2雰囲気、において500℃で2時間窒化する。窒素中で洗浄後、同一の炉内で470℃又は500℃の温度で水蒸気に浸すことで平鍋を1時間酸化する。
アームコ鉄コーヒーポットを研磨し、製造により発生した物理的な凹凸を除く。コーヒーポットを炉内で高い窒化力PN=1.6の解離アンモニア雰囲気NH3/H2において、520℃で1.5時間予備窒化する。その後、PN=0.80よりも低い窒化力で、600℃で3時間窒化する。この製造方法では、引き続き実施例1と同様の酸化、布を用いた研摩、及び銀の電気めっきを行う。
アームコ鉄ティーポットを研磨し、製造により発生した物理的な凹凸を除く。その後、ティーポットをアンモニアと二酸化炭素を供給した炉内で、アンモニア、(反応)水素、及び炭素酸化物を含む雰囲気において530℃で5時間軟窒化する。この製造方法では、引き続き実施例1と同様の酸化、布を用いた研摩、及び銀の電気めっきを行う。
アームコ鉄鍋を研磨し、製造により発生した物理的な凹凸を除く。その後、鍋を炉内で、窒化力PN=0.95の解離アンモニアNH3/H2雰囲気において550℃で4時間窒化する。窒素で洗浄後、450℃〜550℃の温度で同一の炉内で4%〜12%の亜酸化窒素に浸すことにより3時間酸化する。この製造方法では、引き続き、実施例1と同様の布を用いた研摩及び銀の電気めっきを行う。
アームコ鉄鍋を研磨し、製造により発生した物理的な凹凸を除く。適切な酸洗浄後、中心銀陽極を用いた市販のシアン化物アルカリ性銀めっき溶液に鍋を導入し、再循環ポンプを用いその溶液を連続供給することにより、アームコ鉄鍋の内側部分を銀で被覆する。この銀の電鋳は、厚さが0.1mmに達するまで続ける。その後、鍋を炉内で、窒化力PN=0.95の解離アンモニアNH3/H2雰囲気において550℃で4時間窒化する。窒素中で洗浄後、同一の炉内で490℃〜520℃の温度で鍋を水蒸気に浸すことにより2時間酸化する。その後、鍋の内側を布で研磨する。
10 容器(鉄基板)
11 窒化鉄
12 拡散層(窒化層)
13 マグネタイト酸化鉄層
14 酸化層
20 金属層(銀又は銀合金の層、内層)
21 銀又は銀合金層
22 合金層
Claims (15)
- 成形工程、表面硬化工程及び酸化工程を含む調理器具物品を製造する製造方法において、銀又は銀合金を電鋳して前記物品の内側部分を被覆することをさらに含むことを特徴とする製造方法。
- 前記電鋳を前記表面硬化工程及び酸化工程の後に行うことを特徴とする請求項1に記載の製造方法。
- 前記電鋳を前記表面硬化工程及び酸化工程の前に行うことを特徴とする請求項1に記載の製造方法。
- 仕上げ研磨を含むことを特徴とする請求項1〜3のいずれかに記載の製造方法。
- 前記銀の電鋳を含み、該銀の電鋳の後に又は代替として、銀‐スズ、銀‐ゲルマニウム、銀‐アンチモン、又は銀‐ビスマスの合金を堆積させることを含むことを特徴とする請求項1〜4のいずれかに記載の製造方法。
- 前記物品の材料が鉄系材料であることを特徴とする請求項1〜5のいずれかに記載の製造方法。
- 前記表面硬化工程が窒化処理からなることを特徴とする請求項1〜6のいずれかに記載の製造方法。
- 前記表面硬化工程が軟窒化処理からなることを特徴とする請求項1〜6のいずれかに記載の製造方法。
- 前記表面硬化工程が浸炭処理からなることを特徴とする請求項1〜6のいずれかに記載の製造方法。
- 前記表面硬化処理の前に仕上げ処理を含むことを特徴とする請求項1〜9のいずれかに記載の製造方法。
- 前記窒化処理を、炉中において、500℃〜600℃、好ましくは550℃の温度で、1〜5時間、好ましくは4時間、窒化ポテンシャルPNが0.80〜1.6の分解アンモニアNH3 /H2 雰囲気において行うことを特徴とする請求項7に記載の製造方法。
- 分解アンモニア雰囲気NH3 /H2 の炉中において、高窒化力、好ましくはPN=1.6の条件で520℃で1.5時間行われる第1の窒化処理と、分解アンモニア雰囲気NH3 /H2 の炉中において、より低い窒化ポテンシャル、好ましくはPN=0.80の条件で600℃で3時間行われる第2の窒化処理とを含むことを特徴とする請求項7に記載の製造方法。
- 前記酸化工程を400℃〜600℃、好ましくは450℃又は520℃の温度で、水蒸気を炉に注入することにより1〜4時間行うことを特徴とする請求項1〜12のいずれかに記載の製造方法。
- 前記酸化工程を450℃〜550℃、好ましくは490℃又は520℃の温度で、炉中において、2%〜12%の亜酸化窒素を注入することにより0.5時間〜4時間、好ましくは3時間行うことを特徴とする請求項1〜12のいずれかに記載の製造方法。
- 電鋳の結果として得られる内側被膜が0.1〜0.2mmであることを特徴とする請求項1〜14のいずれかに記載の製造方法。
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ITMI2012A001412 | 2012-08-08 | ||
IT001412A ITMI20121412A1 (it) | 2012-08-08 | 2012-08-08 | Procedimento per la realizzazione di un manufatto da cucina con interno di argento o sue leghe elettroformato. |
PCT/EP2013/066159 WO2014023638A1 (en) | 2012-08-08 | 2013-08-01 | Process for manufacturing a cookware article with electroformed silver or silver alloy interior |
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US20150351411A1 (en) * | 2014-06-06 | 2015-12-10 | Haas Food Equipment Gmbh | Baking plate for wafer or waffle baking machines, baking apparatus and method for manufacturing baking plates |
CN108261069B (zh) * | 2016-12-30 | 2020-12-08 | 佛山市顺德区美的电热电器制造有限公司 | 电水壶 |
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US2465608A (en) * | 1944-04-17 | 1949-03-29 | Victor K Scavullo | Method of producing copperplated culinary vessels |
US3090118A (en) * | 1959-04-16 | 1963-05-21 | Sunbeam Corp | Method of making a cooking vessel |
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