JP3431712B2 - Stainless steel sheet for electromagnetic induction heating - Google Patents
Stainless steel sheet for electromagnetic induction heatingInfo
- Publication number
- JP3431712B2 JP3431712B2 JP01959795A JP1959795A JP3431712B2 JP 3431712 B2 JP3431712 B2 JP 3431712B2 JP 01959795 A JP01959795 A JP 01959795A JP 1959795 A JP1959795 A JP 1959795A JP 3431712 B2 JP3431712 B2 JP 3431712B2
- Authority
- JP
- Japan
- Prior art keywords
- electromagnetic induction
- induction heating
- less
- inner pot
- stainless steel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Landscapes
- Cookers (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、電磁誘導加熱方式の炊
飯器に使用される内鍋用材料に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a material for an inner pot used in an electromagnetic induction heating type rice cooker.
【０００２】[0002]
【従来の技術】電磁誘導加熱方式炊飯器の内鍋用材料
は、純ＡｌとＳＵＳ４３０またはＳＵＳ３０４のクラッ
ド材が使用されている。該炊飯器では、内鍋の下に磁力
発生コイルがあり、このコイルからの磁力線により内鍋
内部に誘導電流が生じる。内鍋の外側材のＳＵＳ４３０
またはＳＵＳ３０４は、電気比抵抗が純Ａｌに比べて大
きいために誘導電流によりジュール発熱を起こし、発生
した熱が熱伝導性の良好な内鍋内側材のＡｌを通って伝
わり、内鍋の中に水と一緒に入れた米を炊き上げる。炊
き上がった米が内鍋に焼き付かないように、内鍋の内面
にフッ素樹脂をコーティングする必要があり、同樹脂と
の密着性の点から内鍋内側材にＡｌが使用されている。2. Description of the Related Art As a material for an inner pot of an electromagnetic induction heating type rice cooker, pure Al and a clad material of SUS430 or SUS304 are used. In the rice cooker, a magnetic force generation coil is provided under the inner pot, and an induction current is generated inside the inner pot by magnetic force lines from this coil. SUS430 of the outer material of the inner pot
Or, since SUS304 has a larger electric resistivity than pure Al, it causes Joule heat generation due to the induced current, and the generated heat is transmitted through Al of the inner pot inner material with good thermal conductivity and enters the inner pot. Cook the rice with water. In order to prevent the cooked rice from sticking to the inner pot, it is necessary to coat the inner surface of the inner pot with a fluororesin, and Al is used for the inner material of the inner pot in terms of adhesion with the resin.
【０００３】しかしながら、内鍋に使用している純Ａｌ
とＳＵＳ４３０またはＳＵＳ３０４のクラッド材は、そ
れぞれの単一材料に比べて製造コストが極めて高く、ま
たクラッド材のリサイクルシステムが社会的に充分整備
されていないので、廃棄後のスクラップの処理に大きな
問題がある。また、ＳＵＳ４３０またはＳＵＳ３０４で
は、電気比抵抗が十分でなく、大容量の磁力発生コイル
が必要であり、該コイルを設置するためのスペースに制
約がある場合には補助加熱として電熱線を併設しなけれ
ばならない。However, the pure Al used in the inner pot
The clad materials of SUS430 and SUS430 and SUS430 have extremely high manufacturing costs compared to the single materials, and the recycling system of the clad material is not socially well-established, so there is a big problem in processing scrap after disposal. is there. Further, in SUS430 or SUS304, electric resistivity is not sufficient, a large-capacity magnetic force generating coil is required, and if there is a restriction on the space for installing the coil, a heating wire must be provided as an auxiliary heating. I have to.
【０００４】従って、スクラップ処理が容易な単一材料
において、電磁誘導加熱特性が良好かつ高効率で、更に
フッ素樹脂との密着性に優れた電磁誘導加熱用の内鍋材
料が強く要望されていた。Therefore, there has been a strong demand for an inner pot material for electromagnetic induction heating which has good electromagnetic induction heating characteristics, high efficiency, and excellent adhesiveness with a fluororesin in a single material which can be easily scrapped. .
【０００５】[0005]
【発明が解決しようとする課題】本発明は、スクラップ
処理が容易な単一材料において、電磁誘導加熱特性が良
好で、かつフッ素樹脂との密着性に優れた電磁誘導加熱
用の内鍋材料を提供することを目的とする。DISCLOSURE OF THE INVENTION The present invention provides an inner pot material for electromagnetic induction heating which has good electromagnetic induction heating characteristics and excellent adhesion to fluororesin in a single material which can be easily scraped. The purpose is to provide.
【０００６】[0006]
【課題を解決するための手段】本発明は、上記課題を達
成するためのものであって、その要旨とするところは下
記のとおりである。
（１）重量％にて、Ｃｒ：１０〜３５％、Ａｌ：２．５
〜１０．０％を含有し、不純物として、Ｃ：０．０５％
以下、Ｎ：０．０５％以下、Ｍｎ：２．０％以下、Ｓ：
０．０１％以下で、残部が実質的にＦｅよりなる合金組
成で、かつその薄板状態における電気比抵抗が１１０〜
２００μΩ・ｃｍ、表面粗さがＲａで０．０２〜３．０
μｍであり、表面層におけるＡｌの酸化皮膜厚みが８０
〜８５０Åであることを特徴とする電磁誘導加熱用ステ
ンレス鋼薄板。SUMMARY OF THE INVENTION The present invention is intended to achieve the above object, and the gist thereof is as follows. (1) In weight%, Cr: 10-35%, Al: 2.5
~ 10.0% as an impurity, C: 0.05%
Hereinafter, N: 0.05% or less, Mn: 2.0% or less, S:
The alloy composition is 0.01% or less and the balance is substantially Fe, and the electrical resistivity in the thin plate state is 110 to 110%.
200 μΩ · cm, surface roughness Ra is 0.02 to 3.0
μm, and the thickness of the Al oxide film in the surface layer is 80
Stainless steel thin plate for electromagnetic induction heating, characterized in that it is ~ 850Å.
【０００７】（２）さらにＴｉ、Ｎｂ、Ｚｒ、Ｖ、Ｗ、
Ｔａ、Ｈｆ、Ｂ、ＲＥＭの１種以上を合計で１．０％以
下含有することを特徴とする前項１記載の電磁誘導加熱
用ステンレス鋼薄板。
（３）Ｎｉ、Ｍｏ、Ｃｕ、Ｃｏの１種以上を合計で１０
％以下含有することを特徴とする前項１または２記載の
電磁誘導加熱用ステンレス鋼薄板。(2) Further, Ti, Nb, Zr, V, W,
The stainless steel thin plate for electromagnetic induction heating according to item 1, which contains 1.0% or less in total of at least one of Ta, Hf, B and REM. (3) 10 or more in total of one or more of Ni, Mo, Cu and Co
% Or less, the stainless steel thin plate for electromagnetic induction heating according to item 1 or 2 above.
【０００８】[0008]
【作用】以下、本発明の限定理由について詳細に説明す
る。まず、本発明合金の各元素の限定理由について述べ
る。Ｃｒは、ステンレス鋼の必須元素であり、１０％未
満では耐食性、耐酸化性が劣化する。また、Ｃｒが３５
％を超えると、鋼が脆くなり、内鍋に加工できなくな
る。従って、Ｃｒは１０〜３５％に限定した。望ましい
範囲は、１４〜２３％である。The reason for limiting the present invention will be described in detail below. First, the reasons for limiting each element of the alloy of the present invention will be described. Cr is an essential element of stainless steel, and if it is less than 10%, corrosion resistance and oxidation resistance deteriorate. Also, Cr is 35
If it exceeds%, the steel becomes brittle and cannot be processed into an inner pot. Therefore, Cr is limited to 10 to 35%. A desirable range is 14 to 23%.
【０００９】Ａｌは、本発明にあっては電熱性を確保す
る基本元素であり、２．５％未満では所望の電気比抵抗
が得られない。一方、１０．０％を超えて含まれると、
熱延板の靱性が極度に低下し製造性が損なわれる。従っ
て、Ａｌは２．５〜１０．０％に限定した。望ましい範
囲は４．０〜６．０％である。Ｃ，Ｎは、それぞれが
０．０５％を超えて存在する場合、熱延板の靱性を著し
く低下させる。従って、Ｃ，Ｎはそれぞれ０．０５％以
下に限定した。望ましい範囲は、Ｃ＋Ｎの総量が０．０
６％以下である。In the present invention, Al is a basic element for ensuring the electrothermal property, and if less than 2.5%, the desired electrical resistivity cannot be obtained. On the other hand, if the content exceeds 10.0%,
The toughness of the hot-rolled sheet is extremely lowered and the productivity is impaired. Therefore, Al is limited to 2.5 to 10.0%. A desirable range is 4.0 to 6.0%. When each of C and N is present in an amount exceeding 0.05%, the toughness of the hot rolled sheet is significantly reduced. Therefore, C and N are limited to 0.05% or less. The preferable range is 0.0 + 0.0% of the total amount of C + N.
It is 6% or less.
【００１０】Ｍｎは、本発明にあっては少量であれば脱
酸剤として作用するが、多量に含有すると特に極初期の
酸化皮膜中に濃化し、以後のＡｌの酸化皮膜の形成に害
を及ぼし皮膜に構造的欠陥を残存させる一因となるの
で、２．０％以下に限定した。望ましい範囲は、０．７
〜２．０％である。Ｓは、耐酸化性を低下させるために
本発明にあっては０．０１％以下とした。In the present invention, if a small amount of Mn acts as a deoxidizing agent, if it is contained in a large amount, it is concentrated particularly in the oxide film at the very early stage, which is harmful to the subsequent formation of an Al oxide film. This is a factor that causes structural defects to remain in the coating film and is therefore limited to 2.0% or less. Desirable range is 0.7
~ 2.0%. In the present invention, S is 0.01% or less in order to reduce the oxidation resistance.
【００１１】Ｔｉ、Ｎｂ、Ｚｒ、Ｖ、Ｗ、Ｔａ、Ｈｆ、
Ｂはそれぞれが窒化物あるいは炭化物を形成して固溶
Ｃ，Ｎを減少させるとともに熱間圧延中の圧下により導
入される転位上に析出して組織を微細化させ、熱延板の
靱性を一層向上させるために必要に応じて添加する。ま
た、ＲＥＭは希土類元素を示し、Ｙ、Ｌａ、Ｃｅ、Ｐ
ｒ、Ｎｄ等があり、耐酸化性を顕著に向上させるために
必要に応じて添加する。これらの元素について、１種以
上の合計で１．０％を超えて含有すると、冷間あるいは
熱間での加工性を著しく劣化させる。従って、Ｔｉ、Ｎ
ｂ、Ｚｒ、Ｖ、Ｗ、Ｔａ、Ｈｆ、Ｂ、ＲＥＭの１種以上
を合計で１．０％以下とした。Ti, Nb, Zr, V, W, Ta, Hf,
B forms nitrides or carbides to reduce solid solution C and N, and precipitates on dislocations introduced by reduction during hot rolling to refine the structure and further improve the toughness of the hot rolled sheet. Add as needed to improve. Further, REM represents a rare earth element, and Y, La, Ce, P
There are r, Nd, etc., and they are added as necessary in order to remarkably improve the oxidation resistance. When one or more of these elements are contained in a total amount of more than 1.0%, cold or hot workability is significantly deteriorated. Therefore, Ti, N
One or more of b, Zr, V, W, Ta, Hf, B, and REM were set to 1.0% or less in total.
【００１２】Ｎｉ、Ｍｏ、Ｃｕ、Ｃｏは、耐食性を顕著
に向上させるために必要に応じて添加する。これらの元
素について、１種以上の合計で１０％を超えて含有する
と、冷間あるいは熱間での加工性を著しく劣化させる。
従って、Ｎｉ、Ｍｏ、Ｃｕ、Ｃｏの１種以上を合計で１
０％以下とした。本発明者等は、電磁誘導加熱方式炊飯
器において米の炊き具合と内鍋材料の電気比抵抗の関係
を種々検討した結果、米をムラなく均一に炊き上げるた
めの条件として内鍋材料の電気比抵抗が１１０〜２００
μΩ・ｃｍであることを見出した。Ni, Mo, Cu and Co are added as needed in order to remarkably improve the corrosion resistance. When one or more of these elements are contained in a total amount of more than 10%, cold or hot workability is significantly deteriorated.
Therefore, 1 or more of Ni, Mo, Cu and Co in total is 1
It was set to 0% or less. As a result of various studies on the relationship between the rice cooking condition and the electric resistivity of the inner pot material in the electromagnetic induction heating type rice cooker, the present inventors have found that the electric power of the inner pot material is set as a condition for uniformly heating the rice. Resistivity is 110-200
It was found to be μΩ · cm.
【００１３】消費電力１３００Ｗの電磁誘導加熱方式炊
飯器を用いて、板厚が１ｍｍの内鍋材料に６合の米を入
れて３０分間で炊き上げた結果を図１に示す。電気比抵
抗が１１０μΩ・ｃｍ未満では内鍋の位置により米の炊
き上がりにムラがあり、２００μΩ・ｃｍを超えると炊
き上がった米粒において表層が柔らかく中心が硬いとい
う所謂芯がある状態になりやすい。従って、内鍋材料の
電気比抵抗を１１０〜２００μΩ・ｃｍとした。望まし
い範囲は、１２０〜１６０μΩ・ｃｍである。FIG. 1 shows the result of using an electromagnetic induction heating type rice cooker with a power consumption of 1300 W and putting 6 go of rice in an inner pot material having a plate thickness of 1 mm for 30 minutes. If the electric resistivity is less than 110 μΩ · cm, the cooked rice will be uneven depending on the position of the inner pot, and if it exceeds 200 μΩ · cm, the cooked rice grains tend to have a so-called core in which the surface layer is soft and the center is hard. Therefore, the electrical resistivity of the inner pot material is set to 110 to 200 μΩ · cm. A desirable range is 120 to 160 μΩ · cm.
【００１４】本発明者等は、フッ素樹脂との密着性と内
鍋材料の表面特性の関係を種々検討した結果、フッ素樹
脂との密着性を確保するための条件として内鍋材料の表
面粗さがＲａで０．０２〜３．０μｍで、かつ表面層に
おけるＡｌの酸化皮膜厚みが８０〜８５０Åであること
を見出した。フッ素樹脂との密着性と材料の表面粗さお
よびＡｌの酸化皮膜厚さとの関係を調査した結果を図２
に示す。材料の表面粗さがＲａで０．０２μｍ未満では
密着性確保に効果がなく、３．０μｍを超えると密着性
劣化が発生するようになる。また、Ａｌの酸化皮膜厚み
が８０Å未満では密着性確保に効果がなく、８５０Åを
超えると密着性劣化が発生するようになる。従って、内
鍋材料の表面粗さをＲａで０．０２〜３．０μｍで、か
つ表層におけるＡｌの酸化皮膜厚みを８０〜８５０Åと
した。望ましい範囲は、表面粗さが０．２０〜２．０μ
ｍで、かつＡｌの酸化皮膜厚みを１００〜３００Åであ
る。As a result of various studies on the relationship between the adhesiveness with the fluororesin and the surface characteristics of the inner pot material, the present inventors have found that the surface roughness of the inner pot material is a condition for ensuring the adhesiveness with the fluororesin. Was 0.02 to 3.0 μm in Ra and the thickness of the Al oxide film in the surface layer was 80 to 850 Å. Fig. 2 shows the results of an examination of the relationship between the adhesion to fluororesin, the surface roughness of the material, and the thickness of the Al oxide film.
Shown in. If the surface roughness Ra of the material is less than 0.02 μm, there is no effect in securing the adhesiveness, and if it exceeds 3.0 μm, the adhesiveness deteriorates. Further, if the Al oxide film thickness is less than 80 Å, there is no effect in securing the adhesiveness, and if it exceeds 850 Å, the adhesiveness deteriorates. Therefore, the surface roughness Ra of the inner pot material was 0.02 to 3.0 μm, and the thickness of the Al oxide film in the surface layer was 80 to 850 Å. A desirable range is a surface roughness of 0.20 to 2.0 μ.
m, and the thickness of the Al oxide film is 100 to 300Å.
【００１５】上記理由について詳細は不明であるが、Ａ
ｌ原子は最外殻電子数が３個のため電子を受取り４個に
して電子状態の安定化を図る性質を有しているのに対し
て、Ｆ原子は最外殻電子数が７個のため電子を供与し６
個にして電子状態の安定化を図る性質を有している。そ
のため、酸化皮膜中のＡｌ原子とフッ素樹脂中のＦ原子
との間に電子親和力が作用し、Ａｌ酸化皮膜のある表面
上にフッ素樹脂をコーティングすると密着性が向上する
と推定される。Although the details of the above reason are unknown,
Since the 1 atom has 3 outermost shell electrons, it has the property of receiving 4 electrons and stabilizing the electronic state, while the F atom has 7 outermost shell electrons. Donate electrons for 6
It has the property of stabilizing the electronic state of individual pieces. Therefore, it is presumed that electron affinity acts between Al atoms in the oxide film and F atoms in the fluororesin, and coating the fluororesin on the surface having the Al oxide film improves the adhesion.
【００１６】表面のＡｌ酸化皮膜の厚さを制御するに
は、仕上焼鈍での焼鈍雰囲気および焼鈍条件で行うこと
ができる。焼鈍雰囲気は、Ｎ2 ガスとＨ2 ガスの混合ガ
スが望ましく、Ｎ2 ガスが９０体積％を超えると、酸化
性が強くなり５００Åを超え、Ｎ2 ガスが１０体積％未
満では還元性が強くなり２５Å未満となる。また、焼鈍
温度は、１１５０℃を超えると５００Åを超え、８００
℃未満では２５Å未満となるので、８００〜１１５０℃
が望ましい。In order to control the thickness of the Al oxide film on the surface, it is possible to carry out under the annealing atmosphere and annealing conditions in the finish annealing. The annealing atmosphere is preferably a mixed gas of N 2 gas and H 2 gas. When N 2 gas exceeds 90% by volume, the oxidizing property becomes strong and exceeds 500Å, and when N 2 gas is less than 10% by volume, the reducing property becomes strong. It is less than 25Å. Also, the annealing temperature exceeds 500Å above 1150 ° C,
Below ℃, it will be less than 25 Å, so 800-1150 ℃
Is desirable.
【００１７】表面粗さは、仕上焼鈍後の調質圧延におい
てロール粗度により制御することが望ましい。The surface roughness is preferably controlled by roll roughness in temper rolling after finish annealing.
【００１８】[0018]
【実施例】表１、表２（表１のつづき）に本発明例およ
び比較例の薄鋼板の化学成分組成を示す。転炉−ＶＯＤ
法あるいは電気炉−ＡＯＤ法により溶製し、表３、表４
（表３のつづき）に示される条件に従って板厚１〜２ｍ
ｍに製造した。米の炊き上がりの評価は、消費電力１３
００Ｗの電磁誘導加熱方式炊飯器を用いて、内鍋材料に
６合の米を入れて３０分間で炊き上げて行った。Ａは、
均一に炊き上がりムラがなく、また炊き上がった米粒の
表層・中心も柔らかい状態にある。Ｂは、ほぼ均一に炊
き上がりムラもほとんどなく、また炊き上がった米粒の
表層・中心も柔らかい状態にある。Ｃは、炊き上がりに
若干ムラがあり、また炊き上がった米粒の中心がやや硬
い状態にある。Ｄは、炊き上がりのムラが顕著で、炊き
上がった米粒の中心が硬く芯がある状態にある。また、
フッ素樹脂との密着性の評価は、フッ素樹脂を２０ｃｍ
角にコーティングした後２ｃｍ角の碁盤目状に罫線を入
れた材料を用いて、２００℃×１２時間（相対湿度３０
％で６時間、相対湿度８０％で６時間）、５０℃×６時
間（相対湿度３０％で６時間）を１サイクルとする乾湿
加熱試験を実施し、剥離状況を調査した。◎は全く剥離
がない場合、○は剥離が３箇所以内の場合、△は剥離が
４〜１０箇所以内の場合、×が剥離が１１箇所以上の場
合である。EXAMPLES Tables 1 and 2 (continued from Table 1) show the chemical composition of thin steel sheets of the present invention and comparative examples. Converter-VOD
Method or electric furnace-AOD method,
According to the conditions shown in (continued from Table 3), the plate thickness is 1 to 2 m.
manufactured to m. Power consumption is 13 when the rice is cooked.
Using a 00W electromagnetic induction heating type rice cooker, 6 go of rice was put in the inner pot material and cooked for 30 minutes. A is
Evenly cooked, there is no unevenness, and the surface and center of the cooked rice grains are in a soft state. B is cooked almost evenly and has no unevenness, and the cooked rice grains have a soft surface layer / center. In C, the cooked rice is slightly uneven, and the cooked rice grains have a slightly hard center. In D, the unevenness of the cooked rice is remarkable, and the center of the cooked rice grains is hard and has a core. Also,
For the evaluation of the adhesiveness with the fluororesin, the fluororesin is 20 cm.
After coating the corners, a material with ruled lines in a 2 cm square grid is used, and the temperature is 200 ° C for 12 hours (relative humidity 30
% For 6 hours, relative humidity 80% for 6 hours), and 50 ° C. × 6 hours (relative humidity 30% for 6 hours) as one cycle were subjected to a dry and wet heating test to investigate the peeling condition. ⊚ indicates no peeling at all, ◯ indicates peeling within 3 places, Δ indicates peeling within 4 to 10 places, and x indicates peeling at 11 or more places.
【００１９】本発明により製造した内鍋材料は、米をム
ラなく均一に炊き上げ、かつ炊き上がった米が内鍋に焼
き付かないためのフッ素樹脂との密着性が良いことがわ
かる。It can be seen that the inner pot material produced according to the present invention cooks rice evenly and evenly, and has good adhesion to the fluororesin so that the cooked rice does not stick to the inner pot.
【００２０】[0020]
【表１】 [Table 1]
【００２１】[0021]
【表２】 [Table 2]
【００２２】[0022]
【表３】 [Table 3]
【００２３】[0023]
【表４】 [Table 4]
【００２４】[0024]
【発明の効果】以上のことから明らかな如く、本発明に
よれば、スクラップ処理が容易な単一材料において、電
磁誘導加熱特性が良好で、かつフッ素樹脂との密着性に
優れた電磁誘導加熱用の内鍋材料を提供できる。As is apparent from the above, according to the present invention, a single material that is easily scrap-processed has good electromagnetic induction heating characteristics and excellent adhesion to fluororesin. Can provide the inner pot material for.
【図面の簡単な説明】[Brief description of drawings]
【図１】消費電力１３００Ｗの電磁誘導加熱方式炊飯器
を用いて、板厚が１ｍｍの内鍋材料に６合の米を入れて
３０分間で炊き上げた結果、米の炊き具合と内鍋材料の
電気比抵抗の関係を示す図である。[Fig. 1] Using an electromagnetic induction heating type rice cooker with a power consumption of 1300W, 6 rices were put into an inner pot material with a plate thickness of 1 mm and cooked for 30 minutes, and as a result, the rice cooking condition and the inner pot material It is a figure which shows the relationship of the electrical specific resistance of.
【図２】フッ素樹脂を２０ｃｍ角にコーティングした後
２ｃｍ角の碁盤目状に罫線を入れた材料を用いて、２０
０℃×１２時間（相対湿度３０％で６時間、相対湿度８
０％で６時間）、５０℃×６時間（相対湿度３０％で６
時間）を１サイクルとする乾湿加熱試験を実施した結
果、フッ素樹脂との密着性と材料の表面粗さおよびＡｌ
の酸化皮膜厚さとの関係を示す図である。[FIG. 2] Using a material in which a fluorocarbon resin is coated on a 20 cm square and then ruled lines are formed in a 2 cm square grid,
0 ° C x 12 hours (6 hours at 30% relative humidity, 8 hours relative humidity)
6 hours at 0%, 6 hours at 50 ° C (6 hours at 30% relative humidity)
As a result of performing a dry / wet heating test with one cycle as time, adhesion with fluororesin, surface roughness of material and Al
FIG. 3 is a diagram showing the relationship with the thickness of the oxide film of FIG.
Claims (3)
ｌ：２．５〜１０．０％を含有し、不純物として、Ｃ：
０．０５％以下、Ｎ：０．０５％以下、Ｍｎ：２．０％
以下、Ｓ：０．０１％以下で、残部が実質的にＦｅより
なる合金組成で、かつその薄板状態における電気比抵抗
が１１０〜２００μΩ・ｃｍ、表面粗さがＲａで０．０
２〜３．０μｍであり、表面層におけるＡｌの酸化皮膜
厚みが８０〜８５０Åであることを特徴とする電磁誘導
加熱用ステンレス鋼薄板。1. Cr: 10 to 35% by weight, A
1: 2.5 to 10.0%, and as an impurity, C:
0.05% or less, N: 0.05% or less, Mn: 2.0%
Hereinafter, S: 0.01% or less, the balance is an alloy composition substantially consisting of Fe, and the electrical resistivity in the thin plate state is 110 to 200 μΩ · cm, and the surface roughness Ra is 0.0.
A stainless steel thin plate for electromagnetic induction heating, which has a thickness of 2 to 3.0 μm and an Al oxide film thickness in the surface layer of 80 to 850 Å.
ａ、Ｈｆ、Ｂ、ＲＥＭの１種以上を合計で１．０％以下
含有することを特徴とする請求項１記載の電磁誘導加熱
用ステンレス鋼薄板。2. Further, Ti, Nb, Zr, V, W, T
The stainless steel thin plate for electromagnetic induction heating according to claim 1, which contains 1.0% or less in total of at least one of a, Hf, B, and REM.
計で１０％以下含有することを特徴とする請求項１また
は２記載の電磁誘導加熱用ステンレス鋼薄板。3. The stainless steel sheet for electromagnetic induction heating according to claim 1 or 2, which contains at least one kind of Ni, Mo, Cu and Co in a total amount of 10% or less.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP01959795A JP3431712B2 (en) | 1995-02-07 | 1995-02-07 | Stainless steel sheet for electromagnetic induction heating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP01959795A JP3431712B2 (en) | 1995-02-07 | 1995-02-07 | Stainless steel sheet for electromagnetic induction heating |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08209308A JPH08209308A (en) | 1996-08-13 |
| JP3431712B2 true JP3431712B2 (en) | 2003-07-28 |
Family
ID=12003650
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP01959795A Expired - Lifetime JP3431712B2 (en) | 1995-02-07 | 1995-02-07 | Stainless steel sheet for electromagnetic induction heating |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3431712B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0917847A1 (en) * | 1997-11-19 | 1999-05-26 | Therma Grossküchen Produktion AG | Wok pan |
| EP1514952A4 (en) * | 2002-06-03 | 2005-07-20 | Xinhui Rixing Stainless Steel | Application of a alloy in kitchen utensils manufacture |
| CN101892434A (en) * | 2010-06-12 | 2010-11-24 | 北京首钢吉泰安新材料有限公司 | Ultra-high temperature electrothermal alloy and preparation method thereof |
| ES2945796T3 (en) * | 2018-09-13 | 2023-07-07 | Jfe Steel Corp | Ferritic stainless steel sheet, method of producing the same and Al-plated stainless steel sheet |
-
1995
- 1995-02-07 JP JP01959795A patent/JP3431712B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH08209308A (en) | 1996-08-13 |
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