JPH0254169B2 - - Google Patents
Info
- Publication number
- JPH0254169B2 JPH0254169B2 JP59053180A JP5318084A JPH0254169B2 JP H0254169 B2 JPH0254169 B2 JP H0254169B2 JP 59053180 A JP59053180 A JP 59053180A JP 5318084 A JP5318084 A JP 5318084A JP H0254169 B2 JPH0254169 B2 JP H0254169B2
- Authority
- JP
- Japan
- Prior art keywords
- thickness
- plating layer
- layer
- plating
- roll
- 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
Links
- 238000007747 plating Methods 0.000 claims description 87
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 35
- 238000005098 hot rolling Methods 0.000 claims description 27
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 20
- 229910052759 nickel Inorganic materials 0.000 claims description 15
- 238000009792 diffusion process Methods 0.000 claims description 12
- 229910001096 P alloy Inorganic materials 0.000 claims description 10
- OFNHPGDEEMZPFG-UHFFFAOYSA-N phosphanylidynenickel Chemical compound [P].[Ni] OFNHPGDEEMZPFG-UHFFFAOYSA-N 0.000 claims description 10
- 239000010410 layer Substances 0.000 description 82
- 238000005096 rolling process Methods 0.000 description 16
- 239000011651 chromium Substances 0.000 description 13
- 229910045601 alloy Inorganic materials 0.000 description 9
- 239000000956 alloy Substances 0.000 description 9
- 229910000831 Steel Inorganic materials 0.000 description 8
- 239000010959 steel Substances 0.000 description 8
- 229910018104 Ni-P Inorganic materials 0.000 description 5
- 229910018536 Ni—P Inorganic materials 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 description 4
- 229910000423 chromium oxide Inorganic materials 0.000 description 4
- 229910052804 chromium Inorganic materials 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005097 cold rolling Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- 229910001315 Tool steel Inorganic materials 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000001247 metal acetylides Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/10—Electroplating with more than one layer of the same or of different metals
- C25D5/12—Electroplating with more than one layer of the same or of different metals at least one layer being of nickel or chromium
- C25D5/14—Electroplating with more than one layer of the same or of different metals at least one layer being of nickel or chromium two or more layers being of nickel or chromium, e.g. duplex or triplex layers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
- Electroplating Methods And Accessories (AREA)
Description
【発明の詳細な説明】
（発明の分野）
本発明は、熱間圧延ロール、特に、その表面に
メツキ層を設けて耐摩耗性を改善した熱間圧延ロ
ールに関する。DETAILED DESCRIPTION OF THE INVENTION (Field of the Invention) The present invention relates to a hot rolling roll, and particularly to a hot rolling roll whose surface is provided with a plating layer to improve wear resistance.
（従来技術）
例えば、鋼ストリツプの熱間圧延に使用される
熱間圧延ロールとしては、高速での高圧下率の圧
延加工を高温で行う必要上、優れた耐摩耗性が要
求される。(Prior Art) For example, hot rolling rolls used for hot rolling steel strips are required to have excellent wear resistance because rolling at high speed and with a high reduction ratio must be carried out at high temperatures.
一般に、耐摩耗性ロールとしては、例えばクロ
ム含有量を１〜３％から15〜20％にまで高めた
Hi−Crロールがあり、その他を含有させてＶ
炭化物を形成させ耐摩耗性を改善した含有ロー
ル、仕上がりロールの表面にクロムメツキを施し
たCrメツキロール、さらには放電ダル加工を行
つたロール、溶射ロール、焼結合金（例：WC焼
結合金）で被覆したロールなどもある。 In general, wear-resistant rolls are made with increased chromium content, for example, from 1 to 3% to 15 to 20%.
There is a Hi-Cr roll, and V
Containing rolls with improved wear resistance by forming carbides, Cr-plated rolls with chrome plating on the finished roll surface, rolls with electric discharge dulling, thermal spray rolls, and sintered alloys (e.g. WC sintered alloys). There are also coated rolls.
しかしながら、これら従来の耐摩耗性ロールは
いずれも、耐摩耗性が熱間圧延用として十分でな
いか、熱間圧延ロールとして使用したとき鋼スト
リツプ表面に疵が発生したり、所要平坦度が得ら
れず熱間圧延用として適しないか、あるいはコス
トが高くさらにはロール欠損などの突発事故発生
のおそれもあつたりするなどの問題がみられ、必
ずしも満足されるものでなかつた。 However, all of these conventional wear-resistant rolls either do not have sufficient wear resistance for hot rolling, or when used as hot rolling rolls, scratches occur on the surface of the steel strip, or the required flatness cannot be obtained. However, these methods were not always satisfactory, as they were not suitable for hot rolling, were expensive, and were prone to unexpected accidents such as roll breakage.
従来、特に、耐摩耗性の改善を目的に提案され
た耐摩耗性ロールとしては、Crメツキロールが
あり、耐摩耗性に関し、冷間調質圧延における軽
圧下、すなわち軽負荷圧延においてはほぼ満足す
べき結果が得られており、一般の軟鋼ストリツプ
の圧延の場合、圧下率１％前後、圧延荷重500ト
ン前後のとき、その耐摩耗性は、通常の鍛鋼ロー
ルの３〜４倍改善されると報告されている。しか
しながら、冷間ではともかく、重圧下で高速圧延
の行われる熱間圧延においては、Crメツキロー
ルの使用された例は報告されていない。 A wear-resistant roll that has been proposed for the purpose of particularly improving wear resistance is a Cr-metsuki roll, which is almost satisfactory in terms of wear resistance under light rolling during cold temper rolling, that is, during light-load rolling. In the case of rolling ordinary mild steel strips, when the rolling reduction is around 1% and the rolling load is around 500 tons, the wear resistance is said to be improved 3 to 4 times that of ordinary forged steel rolls. It has been reported. However, apart from cold rolling, there has been no report on the use of Cr-metallic rolls in hot rolling, which involves high-speed rolling under heavy pressure.
しかも、Crメツキロールにはその大きな欠点
としてメツキ層の剥離の問題があつた。つまり、
従来、常識的にクロムメツキ層厚みとしては、
10μｍ程度のメツキが施されていたが、これは、
5μｍ前後では耐摩耗性がほとんど発揮されず、
一方、15μｍ前後と厚くなるとメツキ剥離が多発
することから、耐摩耗性とメツキ層剥離の問題と
を考慮して慣用的に10μｍ程度のメツキ層厚みを
採用していた。しかし、そのようなCrメツキロ
ールでも上述のような重圧下の冷間圧延ロールと
して使用した場合、メツキ層の剥離は避けられな
かつたのである。 Moreover, a major drawback of the Cr plating roll was the problem of peeling of the plating layer. In other words,
Conventionally, the common sense chrome plating layer thickness is:
It was plated with a thickness of about 10 μm, but this
At around 5μm, wear resistance is hardly exhibited,
On the other hand, when the thickness is around 15 μm, plating peeling occurs frequently, so a plating layer thickness of about 10 μm has been conventionally adopted in consideration of wear resistance and the problem of plating layer peeling. However, even when such a Cr plating roll is used as a cold rolling roll under heavy pressure as described above, peeling of the plating layer is unavoidable.
ここに、今日、被圧延材の材質変化によりより
硬質の鋼ストリツプが熱間圧延されるようになつ
てきており、さらにあるいは高圧下圧延あるいは
高速圧延による生産性の一層の向上が図られるよ
うになつてきており、したがつて、高温下でも耐
摩耗性のより優れた熱間圧延用ロールの出現が要
望されるようになつてきた。 Nowadays, due to changes in the material properties of the rolled material, harder steel strips are being hot-rolled, and productivity is being further improved by high-reduction rolling or high-speed rolling. Therefore, there has been a demand for hot rolling rolls that have better wear resistance even under high temperatures.
（発明の目的）
本発明の目的は、熱間圧延に適する耐摩耗性ロ
ールを提供することである。(Object of the invention) The object of the invention is to provide a wear-resistant roll suitable for hot rolling.
本発明の別の目的は、熱間圧延に適する、耐摩
耗性を一層改善したクロムメツキロールを提供す
ることである。 Another object of the present invention is to provide a chrome plated roll that is suitable for hot rolling and has further improved wear resistance.
本発明のさらに別の目的は、ニツケルメツキ層
を設けることで耐摩耗性を一層改善した熱間圧延
クロムメツキロールを提供することである。 Still another object of the present invention is to provide a hot rolled chrome plated roll whose wear resistance is further improved by providing a nickel plated layer.
（発明の要約）
本発明者らは、上述のような今日的要望を満足
する耐摩耗性熱間圧延ロールを開発すべく、種々
検討したところ、クロムメツキロールは一般に鋼
ストリツプ表面とのなじみがよく、耐酸化性にす
ぐれているとの特徴に着目し鋭意研究を続けたと
ころ、高温、高荷重下においても著しく優れた耐
摩耗性示すばかりでなくメツキ層剥離の問題がな
い熱間圧延用クロムメツキロールを見いだして本
発明を完成した。(Summary of the Invention) The present inventors conducted various studies in order to develop a wear-resistant hot rolling roll that satisfies the above-mentioned modern demands, and found that chrome-plated rolls generally have poor compatibility with the steel strip surface. Focusing on its characteristics of excellent oxidation resistance, we conducted extensive research and found that it not only shows outstanding wear resistance even under high temperatures and high loads, but also has no problem with peeling of the plating layer for hot rolling. The present invention was completed by discovering chromemetsquirol.
すなわち、本発明は、厚さ10μｍ以上のニツケ
ルメツキ層、厚さ10μｍ以上のニツケル−リン合
金メツキ層および厚さ10μｍ以上のクロムメツキ
層を順次ロール表面に設け、これら３種のメツキ
層の合計厚さを30〜150μｍとした、３層メツキ
熱間圧延ロールである。 That is, in the present invention, a nickel plating layer with a thickness of 10 μm or more, a nickel-phosphorus alloy plating layer with a thickness of 10 μm or more, and a chrome plating layer with a thickness of 10 μm or more are sequentially provided on the roll surface, and the total thickness of these three types of plating layers is It is a three-layer plating hot rolling roll with a thickness of 30 to 150 μm.
さらに、本発明は、厚さ10μｍ以上のニツケル
メツキ層、厚さ10μｍ以上のニツケル−リン合金
メツキ層および厚さ10μｍ以上のクロムメツキ層
を順次ロール表面に設け、これら３種のメツキ層
の合計厚さを30〜150μｍとするとともに各メツ
キ層の間およびロール基体との間にそれぞれ形成
された拡散層を備えて成る、３層メツキ熱間圧延
ロールである。 Furthermore, the present invention provides a nickel plating layer with a thickness of 10 μm or more, a nickel-phosphorus alloy plating layer with a thickness of 10 μm or more, and a chrome plating layer with a thickness of 10 μm or more on the roll surface, so that the total thickness of these three types of plating layers This is a three-layer plating hot rolling roll having a diameter of 30 to 150 μm and comprising diffusion layers formed between each plating layer and between the roll base.
すなわち、本発明によれば、圧延ロール表面に
まず、密着力は大きいが余り硬度の高くないNi
メツキ層（マイクロビツカース高度Hv250〜400）
を設け、２層目に中間層としてNi−Ｐメツキ層
を設け、最終層つまり最上層として硬度の高い
Crメツキ層（マイクロピツカース硬度Hv1000〜
1200）を施すものである。このような３層メツキ
にするとCrメツキ層厚さを15μｍの以上の厚くし
ていつても剥離せず、むしろCrメツキ層が厚く
なつたことにより耐摩耗性が飛躍的に向上するの
である。Ni、Ni−Ｐ合金はそれ自体優れた耐熱
性を備えている。したがつて、Crメツキ層厚さ
が10μｍと薄しても十分熱間圧延ロールとしての
利用に耐え得る。 That is, according to the present invention, Ni is first applied to the surface of the rolling roll, which has a high adhesion force but is not very hard.
Metsuki layer (microvitscus height Hv250-400)
A Ni-P plating layer is provided as the second layer as an intermediate layer, and a high hardness layer is provided as the final layer or top layer.
Cr plating layer (micro pickax hardness Hv1000 ~
1200). With such three-layer plating, even if the Cr plating layer is made thicker than 15 μm, it will not peel off, and on the contrary, the wear resistance will be dramatically improved by increasing the thickness of the Cr plating layer. Ni and Ni-P alloys themselves have excellent heat resistance. Therefore, even if the thickness of the Cr plating layer is as thin as 10 μm, it can sufficiently withstand use as a hot rolling roll.
さらに、耐衝撃性に関しては、圧延ロール基体
とCrメツキ層との間に低硬度のNiメツキが施さ
れていることから、これにより異常荷重による衝
撃の吸収がなされることになり、衝撃によるメツ
キ層剥離の問題もない。またニツケルメツキ層お
よびニツケル−リン合金メツキ層の密着力が大き
いことから、それによる耐摩耗性も著しく改善さ
れるのである。さらにニツケルおよびその合金の
メツキ層ということで、熱伝導度の点での問題も
ない。 Furthermore, regarding impact resistance, since low hardness Ni plating is applied between the roll base and the Cr plating layer, this absorbs the impact caused by abnormal loads. There is no problem with layer peeling. Furthermore, since the adhesion of the nickel plating layer and the nickel-phosphorus alloy plating layer is high, the wear resistance is also significantly improved. Furthermore, since the plating layer is made of nickel or its alloy, there are no problems with thermal conductivity.
なお、前述のように、本発明によれば、各メツ
キ層の間およびロール基体との間には必要により
それぞれ拡散層を設けてもよいが、その場合には
非酸化性雰囲気中で、例えば300〜800℃で約5μ
ｍの厚さの拡散層を形成するに十分な時間だけ加
熱処理する。かかる拡散層の形成はメツキ層の密
着性を一層強固にするのに有効である。 As described above, according to the present invention, diffusion layers may be provided between each plating layer and between the roll base and the roll base, if necessary, but in that case, for example, diffusion layers may be provided in a non-oxidizing atmosphere. Approximately 5μ at 300~800℃
Heat treatment is performed for a time sufficient to form a diffusion layer with a thickness of m. Formation of such a diffusion layer is effective in further strengthening the adhesion of the plating layer.
（発明の態様）
添付図面は本発明にかかる熱間圧延用ロールの
表面断面を一部略式で示したものであつて、図示
のように、本発明によれば、熱間圧延用ロール基
体１上にニツケルメツキ層２、ニツケル−リン合
金メツキ層３およびクロムメツキ層４がこの順序
で設けられた３層メツキが施されるのであが、そ
の場合、メツキ後に好ましくは300〜800℃に非酸
化雰囲気中で加熱処理することにより、熱間圧延
用ロール基体１とニツケルメツキ層２との間、ニ
ツケルメツキ層２とニツケル−リン合金メツキ層
３との間、およびニツケル−リン合金メツキ層３
とクロムメツキ層４との間にはそれぞれ拡散層
５，６，７が形成されている。クロムメツキ層４
の表層部にはクロム酸化皮膜層８が設けられてい
る。(Aspects of the Invention) The attached drawings partially schematically show a surface cross section of a hot rolling roll according to the present invention, and as shown in the drawings, according to the present invention, a hot rolling roll base 1 A three-layer plating is applied on top, in which a nickel plating layer 2, a nickel-phosphorus alloy plating layer 3, and a chrome plating layer 4 are provided in this order. By heat-treating in the interior, the areas between the hot rolling roll base 1 and the nickel plating layer 2, between the nickel plating layer 2 and the nickel-phosphorus alloy plating layer 3, and the nickel-phosphorus alloy plating layer 3 are formed.
Diffusion layers 5, 6, and 7 are formed between and the chrome plating layer 4, respectively. Chrome plating layer 4
A chromium oxide film layer 8 is provided on the surface layer.
クロムメツキ層厚さを10μｍ以上にするのは、
これより薄いと耐摩耗性が十分でないためであ
る。一方、本発明によれば各メツキ層の硬度を下
側から順次上げ、下地としては密着力のより大き
なメツキ層を設けているため最上層のクロムメツ
キ層厚さは従来のものに比較してかなり厚くする
ことができ、そのような場合でもメツキ層剥離の
問題はない。クロムメツキ層は厚ければ厚い程耐
摩耗性が向上するということを考えれば、上述の
ようなことは実際上は大きな利益といえる。また
ニツケルメツキ層およびニツケル−リン合金メツ
キ層の各厚さを同じく10μｍ以上とするのは10μ
ｍ未満では耐熱性が十分でないばかりか、密着力
を向上させその上に設たクロムメツキ層の剥離防
止に十分でないからである。 To make the chrome plating layer thicker than 10μm,
This is because if it is thinner than this, the wear resistance will not be sufficient. On the other hand, according to the present invention, the hardness of each plating layer is increased sequentially from the bottom, and a plating layer with greater adhesion is provided as the base, so the thickness of the top chrome plating layer is considerably thicker than that of the conventional one. It can be made thicker, and even in such a case there is no problem of peeling of the plating layer. Considering that the thicker the chrome plating layer, the better the wear resistance, the above can be said to be a great benefit in practice. Also, if the thickness of the nickel plating layer and the nickel-phosphorus alloy plating layer is 10 μm or more, it is 10 μm or more.
This is because if it is less than m, not only the heat resistance will not be sufficient, but also it will not be sufficient to improve the adhesion and prevent the chrome plating layer provided thereon from peeling off.
ここに、３層になつたメツキ層厚さの合金を30
〜150μｍとしたのは、Niメツキ、Ni−Ｐメツキ、
Crメツキともに所期の目的を発揮するためには
所定のメツキ層厚さが必要であるからであるとと
もに、一方、無制限にクロムメツキ、ニツケルメ
ツキなどを厚くすることはメツキ処理費用、ロー
ル研削に要する費用の面から得策ではなく、ま
た、余り厚くなると熱伝導度も悪化し、ヒートラ
ツクが発生し易くなり好ましくないことから、本
発明では150μｍを上限とする。 Here, the alloy with a thickness of 3 layers is 30
~150μm is Ni plating, Ni-P plating,
This is because both chromium plating and nickel plating require a certain plating layer thickness in order to achieve the intended purpose, and on the other hand, increasing the thickness of chrome plating, nickel plating, etc. without limit increases the plating processing cost and the cost required for roll grinding. In this invention, the upper limit is set at 150 .mu.m, since it is not advisable in terms of thickness, and if it is too thick, the thermal conductivity deteriorates and heat tracks tend to occur, which is undesirable.
すでに述べたように、メツキ層同志あるいは基
体との拡散層つまり合金化層の形成を促進するた
めに、メツキ後の熱処理は好ましくは300〜800℃
の温度範囲において行われるが、その場合、不必
要な酸化を防止するために加熱は非酸化雰囲気中
で行う。かかる加熱処理時に最上層のCrメツキ
層の表層部が酸化されて緻密な酸化クロム皮膜８
が生成する。これにより耐摩耗性はさらに一層向
上する。 As mentioned above, in order to promote the formation of a diffusion layer, that is, an alloyed layer, between the plating layers or the substrate, the heat treatment after plating is preferably performed at a temperature of 300 to 800°C.
In this case, heating is carried out in a non-oxidizing atmosphere to prevent unnecessary oxidation. During this heat treatment, the surface layer of the topmost Cr plating layer is oxidized to form a dense chromium oxide film 8.
is generated. This further improves wear resistance.
ここに、上記Ni−Ｐ合金としては特に制限さ
れないが、一般にはNiベースにして例えば１〜
20％までのＰを添加した合金である。また、本発
明において使用するロールはその形状、組成、さ
らには加工履歴において特に制限されない。材質
的には、例えば鍛鋼焼入れロール、鋳鉄ロール、
高速度工具鋼ロール等を挙げることができる。用
途の面からも、本発明にかかる熱間圧延ロールは
重圧下の熱間圧延用ロールを一般的に包含するの
である。 Here, the Ni-P alloy is not particularly limited, but is generally made of Ni-based alloys such as 1 to 1.
It is an alloy containing up to 20% P. Further, the roll used in the present invention is not particularly limited in its shape, composition, or processing history. In terms of materials, for example, forged steel quenched rolls, cast iron rolls,
Examples include high speed tool steel rolls. From the standpoint of use, the hot rolling roll according to the present invention generally includes a roll for hot rolling under heavy pressure.
なお、メツキ処理それ自体は従来のそれを利用
すればよく、それについては特に説明を要しない
であろう。また、本発明がそのようなメツキ操作
によつて制限されないことは以上の説明からも当
業者には明らかなところであろう。 Incidentally, the plating process itself may be performed using a conventional method, and no particular explanation is necessary. Furthermore, it will be clear to those skilled in the art from the above description that the present invention is not limited to such plating operations.
次に本発明をその実施例に関連させてさらに説
明する。 The invention will now be further described in connection with examples thereof.
実施例
鋼ストリツプの熱間圧延用ロール表面に50μｍ
厚のNiメツキを施し、次いで15重量％のＰと残
部Niから成るNi−Ｐ合金メツキを20μｍの厚さで
施し、しかる後に、40μｍのCrメツキを施した。
メツキ層の合計厚さは110mmであつた。メツキ処
理終了後、N2ガス雰囲気中で650℃に加熱処理を
行い、ロール基体、各メツキ層間に厚さほぼ5μ
ｍの拡散層を形成させるとともに、最表層部に酸
化クロム皮膜層を形成さた。Example: 50 μm on the surface of a roll for hot rolling of steel strip
A thick Ni plating was applied, then a Ni-P alloy plating consisting of 15% by weight of P and the balance Ni was applied to a thickness of 20 μm, and then a 40 μm thick Cr plating was applied.
The total thickness of the plating layer was 110 mm. After the plating process is completed, heat treatment is performed at 650℃ in an N2 gas atmosphere to create a thickness of approximately 5μ between the roll base and each plating layer.
In addition to forming a diffusion layer of m, a chromium oxide film layer was formed on the outermost layer.
このようにして得た圧延ロールを鋼ストリツプ
熱間圧延の仕上げミル前段の＃１、２、３スタン
ドワークロールとして用い、通常のアダマイトロ
ールと同サイズ、同圧延量の圧延を行つたとこ
ろ、平均仕上げサイズ4.0mm厚×1219mm幅で2000
トンの圧延の結果、本発明に係るロールはアダマ
イトロールに比べ、摩耗量は1/5に減り、１ケ月
の長期の繰り返し使用結果、ロール原単位は、1/
５に減少した。また、ロール組替の減少に伴い、
圧延量の増加が可能となつた。 The rolling rolls obtained in this way were used as #1, 2, and 3 stand work rolls in the front stage of a finishing mill for steel strip hot rolling, and rolling was performed with the same size and rolling amount as a normal Adamite roll. Average finished size 4.0mm thick x 1219mm wide 2000
As a result of rolling tons, the wear amount of the roll according to the present invention was reduced to 1/5 compared to the Adamite roll, and as a result of long-term repeated use for one month, the roll consumption rate was reduced to 1/5 compared to the Adamite roll.
It decreased to 5. In addition, with the decrease in role reshuffling,
It became possible to increase the amount of rolling.
なお、クロム単層メツキロールは上述の熱間圧
延には使用できなかつた。 Note that the chromium single-layer metal roll could not be used for the above-mentioned hot rolling.
かくして、本発明はその簡単に構成にもかかわ
らず、実際上の効果は著しく、斯界に寄与すると
ころ大である。 Thus, despite the simple structure of the present invention, its practical effects are remarkable and it will greatly contribute to this field.
添付図面は、本発明にかかる熱間圧延用ロール
の表面の略式断面図である。
１：ロール基体、２：ニツケルメツキ層、３：
ニツケル−リン合金メツキ層、４：クロムメツキ
層、５：拡散層、６：拡散層、７：拡散層、８：
酸化クロム皮膜層。
The accompanying drawing is a schematic cross-sectional view of the surface of a hot rolling roll according to the present invention. 1: Roll base, 2: Nickel plating layer, 3:
Nickel-phosphorus alloy plating layer, 4: Chrome plating layer, 5: Diffusion layer, 6: Diffusion layer, 7: Diffusion layer, 8:
Chromium oxide film layer.
Claims (1)
10μｍ以上のニツケル−リン合金メツキ層および
厚さ10μｍ以上のクロムメツキ層を順次ロール表
面に設け、これら３種のメツキ層の合計厚さを30
〜150μｍとした、３層メツキ熱間圧延ロール。 ２ 厚さ10μｍ以上のニツケルメツキ層、厚さ
10μｍ以上のニツケル−リン合金メツキ層および
厚さ10μｍ以上のクロムメツキ層を順次ロール表
面に設け、これら３種のメツキ層の合計厚さを30
〜150μｍとするとともに各メツキ層の間および
ロール基体との間にそれぞれ形成させた拡散層を
備えて成る、３層メツキ熱間圧延ロール。[Claims] 1. Nickel plating layer with a thickness of 10 μm or more, thickness
A nickel-phosphorus alloy plating layer with a thickness of 10 μm or more and a chrome plating layer with a thickness of 10 μm or more are sequentially provided on the roll surface, and the total thickness of these three types of plating layers is 30 μm or more.
A three-layer plating hot rolling roll with a thickness of ~150 μm. 2 Nickel plating layer with a thickness of 10 μm or more, thickness
A nickel-phosphorus alloy plating layer with a thickness of 10 μm or more and a chrome plating layer with a thickness of 10 μm or more are sequentially provided on the roll surface, and the total thickness of these three types of plating layers is 30 μm or more.
A three-layer plating hot rolling roll having a thickness of ~150 μm and comprising diffusion layers formed between each plating layer and between the roll base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59053180A JPS60196209A (en) | 1984-03-19 | 1984-03-19 | 3-layer plating hot rolling roll |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59053180A JPS60196209A (en) | 1984-03-19 | 1984-03-19 | 3-layer plating hot rolling roll |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60196209A JPS60196209A (en) | 1985-10-04 |
| JPH0254169B2 true JPH0254169B2 (en) | 1990-11-20 |
Family
ID=12935665
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59053180A Granted JPS60196209A (en) | 1984-03-19 | 1984-03-19 | 3-layer plating hot rolling roll |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60196209A (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6487005A (en) * | 1987-09-30 | 1989-03-31 | Tocalo Co Ltd | Roll for rolling process and its manufacture |
| AUPO710497A0 (en) * | 1997-06-02 | 1997-06-26 | Bhp Steel (Jla) Pty Limited | Casting metal strip |
| JP3739187B2 (en) * | 1997-07-31 | 2006-01-25 | 積水化学工業株式会社 | Extruded sheet forming roll |
| US6071110A (en) * | 1997-09-11 | 2000-06-06 | Mikkelsen; Oeystein | Polishing roll and method for making same |
| JP3739191B2 (en) * | 1997-10-02 | 2006-01-25 | 積水化学工業株式会社 | Extruded sheet forming roll |
| WO2014111616A1 (en) * | 2013-01-15 | 2014-07-24 | Savroc Ltd | Method for producing a chromium coating on a metal substrate |
| CN104120461A (en) * | 2013-04-28 | 2014-10-29 | 上海宝钢工业技术服务有限公司 | Method for preparing gradient alloy plating layer on surface of thin strip continuous casting crystallization roller and plating solution |
| US10443143B2 (en) | 2014-01-15 | 2019-10-15 | Savroc Ltd | Method for producing a chromium coating and a coated object |
| CN105917030B (en) | 2014-01-15 | 2018-04-13 | 萨夫罗克有限公司 | For generating the method for the laminated coating containing chromium and the object of coating |
| EP3167100B1 (en) | 2014-07-11 | 2020-02-26 | Savroc Ltd | A chromium-containing coating and a coated object |
| CN106319584B (en) * | 2016-10-11 | 2018-10-12 | 爱蓝天高新技术材料(大连)有限公司 | A kind of processing technology of superelevation surface density nickel foam |
| DE102020212903A1 (en) | 2020-10-13 | 2022-04-14 | Thyssenkrupp Steel Europe Ag | Roller and method for manufacturing a corresponding roller |
-
1984
- 1984-03-19 JP JP59053180A patent/JPS60196209A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60196209A (en) | 1985-10-04 |
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