JPH1129845A - Roll for metal sheet treatment line, and its production - Google Patents
Roll for metal sheet treatment line, and its productionInfo
- Publication number
- JPH1129845A JPH1129845A JP9202647A JP20264797A JPH1129845A JP H1129845 A JPH1129845 A JP H1129845A JP 9202647 A JP9202647 A JP 9202647A JP 20264797 A JP20264797 A JP 20264797A JP H1129845 A JPH1129845 A JP H1129845A
- Authority
- JP
- Japan
- Prior art keywords
- coating
- roll
- alloy
- thermal spraying
- cermet
- 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.)
- Pending
Links
Landscapes
- Coating By Spraying Or Casting (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、サーメット材料の
溶射被覆が、気孔を含まない態様にて施された金属板処
理ライン用ロール及びその製造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roll for a metal sheet processing line in which a thermal spray coating of a cermet material is applied in a manner not including pores, and a method for producing the same.
【０００２】[0002]
【従来の技術】ＷＣ，Ｃｒ3Ｃ2，ＴｉＣ，ＴｉＢ2のよ
うな硬質セラミックスがＣｏ基合金，Ｎｉ−Ｃｒ基合金
などの金属目地中に充填されたサーメット材料を溶射被
覆したロールは、クロムめっきロールよりも優れた耐摩
耗性、ならびに金属粉が付着しにくい特性、あるいは耐
熱性により、近年、鋼板，アルミニウム板，銅板等の処
理ラインにガイドロール，ブライドルロール，ハースロ
ール等として多用されている。 2. Description of the Related Art Rolls sprayed with a cermet material in which hard ceramics such as WC, Cr 3 C 2 , TiC, and TiB 2 are filled in metal joints such as a Co-based alloy and a Ni—Cr-based alloy are made of chromium. In recent years, it has been widely used as a guide roll, bridle roll, hearth roll, etc. in processing lines for steel plates, aluminum plates, copper plates, etc. due to its superior abrasion resistance and the property that metal powder is less likely to adhere than plating rolls, or heat resistance. I have.
【０００３】しかし、上記材料を溶射したまゝの被覆に
は被覆の全域に亘って微小な気孔が存在し、研摩仕上後
のロール表面には、上記気孔の断面が露呈した微小なピ
ットが多数存在する。このピットは肉眼では見えない程
度のものでありピット自体が通板材に傷をつけることは
ないが、金属板の表面に不可避的に存在する金属微粉な
どがピット中に堆積して顆粒となり、これが離脱し、金
属板に再転着して金属板の表面品位を損なうことがあ
る。因に、上記気孔は、溶射粒子が飛行中に冷却され、
表層部から凝固が進んだ粒子が対象面との衝突により扁
平化しながら堆積するという、溶射被覆の形成履歴に由
来するものであり、堆積した粒子間に残留した隙間が気
孔である。[0003] However, the coating before spraying the above-mentioned material has fine pores over the entire area of the coating, and the roll surface after polishing has many fine pits in which the cross-section of the pores is exposed. Exists. These pits are invisible to the naked eye, and the pits themselves do not damage the passing material.However, fine metal powder and the like inevitably existing on the surface of the metal plate accumulate in the pits to form granules, The metal sheet may be detached and re-transferred to the metal plate to deteriorate the surface quality of the metal plate. Incidentally, the pores are cooled during the flight of the spray particles,
This is due to the formation history of the thermal spray coating, in which particles solidified from the surface layer accumulate while flattening due to collision with the target surface, and gaps remaining between the accumulated particles are pores.
【０００４】上記気孔は、又、扁平化した粒子間に存在
することから、母材面に至る通液路を形成しており、め
っきライン用通電ロール（コンダクタロール）のような
接液状態で用いられる用途において、母材の腐食、ひい
ては被覆層の剥離の要因となることがある。Since the pores are present between the flattened particles, they form a liquid flow path to the base material surface, and are in a liquid-contact state like a current-carrying roll (conductor roll) for a plating line. Depending on the application used, it may cause corrosion of the base material and eventually peeling of the coating layer.
【０００５】上記問題への対策として、目地金属相形
成成分として自溶性合金を配合したサーメット溶射材料
を用いた上で、溶射被覆の再溶融処理により気孔を消滅
させる方式、及び、樹脂などを含浸させて気孔を封じ
る方式が、従来より採用されており、又、近年は、新
規開発された高速燃焼炎溶射法（ＨＶＯＦ）により溶射
粒子を数100m/sの高速で対象面に衝突させて気孔を抑制
し、再溶融処理を行わない溶射のまゝの状態で使用に供
するという方式も採用されている。As a countermeasure against the above-mentioned problem, a method of using a cermet sprayed material containing a self-fluxing alloy as a joint metal phase forming component, eliminating pores by remelting the sprayed coating, and impregnating with a resin or the like. Conventionally, a method of sealing pores has been adopted. In recent years, a newly developed high-speed combustion flame spraying method (HVOF) is used to cause spray particles to collide with a target surface at a high speed of several hundred m / s. In addition, a method is also adopted in which the material is used in the state of thermal spraying without performing remelting treatment.
【０００６】しかしながら、上記の方式には、工程増
によるコスト増に加えて、再溶融処理の際の1000℃を超
える加熱により、被覆−母材間に被覆より更に硬質の合
金層が発達し、被覆更新時の母材表面精整に多大なコス
トを要するという問題があり、の方式には、多くの使
用条件に対して熱的ないしは化学的な耐久性が不足する
という限界がある。[0006] However, in the above-mentioned method, in addition to the cost increase due to an increase in the number of steps, an alloy layer harder than the coating develops between the coating and the base material due to heating exceeding 1000 ° C during the remelting treatment. There is a problem in that a large amount of cost is required for refining the surface of the base material when renewing the coating, and the method has a limitation that thermal or chemical durability is insufficient for many use conditions.
【０００７】又、の方式は、気孔のサイズの分布が好
ましい方向に変化するものの、前記ピットあるいは通液
経路は相変わらず存在しており、汎用的に奏効する根本
的な解決手段とはなりえない。In the above method, although the pore size distribution changes in a preferable direction, the pits or the liquid passages are still present, and cannot be a fundamental solution that can be generally used. .
【０００８】[0008]
【発明が解決しようとする課題】本発明は、上述の諸問
題に鑑みてなされたものであって、前記気孔が存在しな
いサーメット溶射被覆が施された、安価に供しうる金属
板処理ライン用ロールの提供を課題とする。DISCLOSURE OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and is an inexpensive roll for a metal plate processing line coated with a cermet sprayed coating having no pores. To provide
【０００９】[0009]
【課題を解決するための手段】上記課題を解決すべくな
された本発明金属板処理ライン用ロールは、表面にサー
メット材料の溶射被覆を施したロールにおいて、該溶射
被覆を、Ｎｉ−Ｎｉ3Ｐ相のＮｉ−Ｐ合金を配合したサ
ーメット溶射材料を用いて、溶射粒子が融結した状態に
形成したことを特徴とするものである。Means for Solving the Problems The present invention metal plate processing line roll has been made to solve the above problems is the roll subjected to spray coating of cermet material on a surface, the solution morphism coating, Ni-Ni 3 P The present invention is characterized in that spray particles are formed in a fused state by using a cermet spray material mixed with a Ni-P alloy of a phase.
【００１０】上記本発明構成によれば、従来の自溶性合
金より大巾に融点が低くなっているＮｉ−Ｎｉ3Ｐ相の
Ｎｉ−Ｐ合金を配合したサーメット溶射材料を用いてい
ることにより、溶射粒子が融結した形の溶射被覆の形成
が低いレベルの入熱にて安価に行える。しかして、かゝ
る融結した形の被覆にあっては、溶射粒子が扁平化して
堆積した組織そのものが、ひいては堆積粒子間の隙間即
ち前記気孔が存在しえなくなっており、前記本発明の課
題が解決される。[0010] According to the present invention configuration, by conventional greatly in melting point than the self-fluxing alloy is used cermet spraying material blended with the Ni-P alloy of Ni-Ni 3 P phase is low, The formation of a thermal spray coating in the form of fused thermal spray particles can be performed inexpensively with low levels of heat input. Thus, in the coating in such a fused form, the structure itself in which the thermal spray particles are flattened and deposited, and hence the gaps between the deposited particles, that is, the pores, cannot exist, and the present invention is not limited to this. The problem is solved.
【００１１】即ち、微細なＮｉとＮｉ3Ｐ（金属間化合
物）の混合物である前記Ｎｉ−Ｐ合金は、Ｐ含量11wt
％，融点880℃の共晶点を有し、該融点がＮｉ−Ｎｉ3Ｐ
相内の全組成に共通の固相線融点となる。一方、液相線
融点は上記共晶点における880℃を極小値としてＶ字型
に変化する。なお、こゝで、固相線融点とは融解に際し
て最初に溶融相が現われる温度を、又、液相線融点と
は、固相が消失し全量が溶融相となる温度を指すものと
する。即ち、固相線融点と液相線融点の間では、温度の
高低に応じた量の溶融相を含んだ固液共存状態となって
いる。よって、溶射粒子がロール面に付着した時点ない
しはそれ以降において上記固相線融点880℃以上の温度
を経ていさえすれば、溶射粒子が融結した形の被覆が得
られる。That is, the Ni—P alloy, which is a mixture of fine Ni and Ni 3 P (intermetallic compound), has a P content of 11 wt.
%, Eutectic point of 880 ° C., and the melting point is Ni—Ni 3 P
A solidus melting point common to all compositions in the phase. On the other hand, the liquidus melting point changes to a V-shape with the minimum value at 880 ° C. at the eutectic point. Here, the solidus melting point refers to the temperature at which a molten phase first appears during melting, and the liquidus melting point refers to the temperature at which the solid phase disappears and the entire amount becomes a molten phase. That is, between the solidus melting point and the liquidus melting point, there is a solid-liquid coexistence state including a molten phase in an amount corresponding to the level of the temperature. Therefore, as long as the temperature of the solidus melting point is 880 ° C. or more at or after the time when the spray particles adhere to the roll surface, a coating in which the spray particles are fused can be obtained.
【００１２】しかし、前記固液共存状態における溶融相
の分率を同一の温度で比べると、液相線融点が小なるほ
ど大である。即ち、液相線融点の低いＮｉ−Ｐ合金ほど
配合量が少なくて済み、ひいては、サーメット材料の諸
特性に及ぼす影響が少なくなるので、なるべく液相線融
点の低いＮｉ−Ｐ合金を配合することが望ましく、前記
共晶点組成のＮｉ−Ｐ合金が最適であるが、入手しにく
い等の場合には、一つの目安として、液相線融点が1000
℃以下となるＰ含量９〜14wt％の範囲のＮｉ−Ｐ合金が
推奨される。However, when the fractions of the molten phase in the solid-liquid coexistence state are compared at the same temperature, the higher the liquidus melting point, the greater. That is, the lower the melting point of the Ni-P alloy, the smaller the amount of the Ni-P alloy required, and the less the effect on the various properties of the cermet material is reduced. It is desirable to use a Ni-P alloy having the eutectic point composition described above.
Ni-P alloys with a P content in the range of 9 to 14% by weight, which is below ℃, are recommended.
【００１３】[0013]
【発明の実施の形態】図３は、通常のサーメット溶射材
料を前記ＨＶＯＦで溶射したまゝの被覆を有する従来ロ
ールの被覆部分の微視的な態様を概念的に示したもので
あって、１はロール母材、2bは被覆である。被覆2bは、
溶射粒子が扁平化した堆積粒子３の集積体であり、堆積
粒子間には隙間（気孔）４が全域に亘って存在してい
る。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 3 conceptually shows a microscopic aspect of a coating portion of a conventional roll having a coating obtained by spraying a normal cermet sprayed material with the HVOF, 1 is a roll base material and 2b is a coating. The coating 2b is
The thermal spray particles are an aggregate of flattened deposited particles 3, and gaps (pores) 4 are present between the deposited particles over the entire area.
【００１４】又、図４は、自溶性合金基サーメット材料
を溶射した後再溶融処理を施した被覆を有する従来ロー
ルの被覆部分を同様に示したものである。前記堆積粒子
が集積した構造ならびに堆積粒子間の隙間は再溶融処理
によって消失しており、代わりに、母材１と被覆2cの間
に、再溶融処理の間に発達した厚い合金相8cが生じてい
る。FIG. 4 similarly shows a coating portion of a conventional roll having a coating formed by spraying a self-fluxing alloy-based cermet material and then performing a re-melting treatment. The structure in which the sedimentary particles are accumulated and the gaps between the sedimentary particles have disappeared by the remelting process. Instead, a thick alloy phase 8c developed between the base material 1 and the coating 2c has developed during the remelting process. ing.
【００１５】しかして、本発明ロールの被覆部分は図１
に示したような構造になる。即ち、この例では図４の例
と同様にＷＣなどの硬質セラミックスの微粒子５が第一
の目地金属相６-１中に分散した構造の複合領域７（図
２参照）が、更に、第二の目地金属相６-２中に分散し
た構造を呈している。上記第一の目地金属相６-１と第
二の目地金属相６-２とは一体化しており、溶射粒子が
相互に融結した経過が見てとれる。図１に見る通り、本
発明ロールには、図４の再溶融処理済ロールと同様、前
記堆積粒子が集積した構造は認められず、従って、堆積
粒子間の隙間（気孔）は明らかに存在しえない。一方、
母材１と被覆2aの間には合金層8aが生じており、被覆2a
と母材１の強固な結合が窺えるが、上記合金層8aの厚さ
は、被覆形成時の入熱レベルが低くて済んでいることか
ら、図４に示した前記再溶融処理済被覆2cの合金層8cの
数分の１に留まっている。FIG. 1 is a sectional view of the roll of the present invention.
The structure is as shown in FIG. That is, in this example, similarly to the example of FIG. 4, a composite region 7 (see FIG. 2) having a structure in which fine particles 5 of hard ceramics such as WC are dispersed in the first joint metal phase 6-1 is further provided. Has a structure dispersed in the joint metal phase 6-2. The first joint metal phase 6-1 and the second joint metal phase 6-2 are integrated, and it can be seen that the spray particles have fused together. As shown in FIG. 1, the roll of the present invention does not have a structure in which the deposited particles are accumulated, as in the remelted roll of FIG. 4, and therefore, the gaps (pores) between the deposited particles are clearly present. I can't. on the other hand,
An alloy layer 8a is formed between the base material 1 and the coating 2a.
Although it can be seen that the alloy layer 8a has a low heat input level at the time of forming the coating, the thickness of the alloy layer 8a is lower than that of the remelted coating 2c shown in FIG. It is only a fraction of the alloy layer 8c.
【００１６】上述の通り、本発明ロールの被覆には気孔
が存在しない。よって、研摩仕上げ後の前記微小ピット
の生成もなく、該ピットに起因して通板材の表面品位が
損なわれるという前記従来ロールの問題点が解消され
る。又、当然ながら、気孔が連なって前記母材に至る通
液路が形成されることもないので、コンダクタロールに
用いた際にめっき液が浸透して母材の腐食や溶射被覆の
剥離が起こると云った前記従来ロールの問題点も解消さ
れる。As described above, the coating of the roll of the present invention has no pores. Therefore, the problem of the conventional roll that the fine pits are not generated after the polishing finish and the surface quality of the sheet passing material is impaired due to the pits is solved. Also, of course, there is no formation of a liquid passage leading to the base material by connecting the pores, so that when used for a conductor roll, the plating solution permeates and corrosion of the base material and peeling of the thermal spray coating occur. The problem of the conventional roll described above is also solved.
【００１７】本発明ロールの表面に形成する溶射被覆に
は、上記本発明固有の特性に加えて、金属板処理ライン
に用いた際の摩耗がクロムめっき等に比べて十分少ない
ことが要請される。サーメット材料は総じて耐摩耗性に
優れるが、中でも、ＷＣ，Ｃｒ3Ｃ2，ＴｉＣ，ＴｉＢ2
のような特に硬質のセラミックを配合したサーメット材
料が好適である。これらの硬質セラミックを70wt％以上
配合することにより、該セラミックの耐摩耗性を十分反
映した溶射被覆が得られる。配合量が多いほど被覆の耐
摩耗性は優れるが、90wt％を超える配合は被覆の靭性を
低下させるので好ましくない。The thermal spray coating formed on the surface of the roll of the present invention is required to have, in addition to the above-mentioned characteristics unique to the present invention, sufficiently less wear when used in a metal plate processing line than chrome plating or the like. . Cermet materials are generally excellent in abrasion resistance. Among them, WC, Cr 3 C 2 , TiC, TiB 2
A cermet material containing a particularly hard ceramic is preferred. By mixing these hard ceramics in an amount of 70 wt% or more, a thermal spray coating sufficiently reflecting the wear resistance of the ceramic can be obtained. The larger the amount is, the better the wear resistance of the coating is. However, the content exceeding 90% by weight is not preferable because the toughness of the coating is reduced.
【００１８】又、前記Ｎｉ−Ｐ合金は、５wt％以上の配
合によって、溶射粒子が融結した状態の被覆が確実に得
られる。配合量が増すほど融結状態が容易に得られる
が、目地金属相全体の50wt％を超える配合は被覆の目地
金属相の靭性低下をもたらすので好ましくない。[0018] When the Ni-P alloy is blended in an amount of 5 wt% or more, a coating in a state where the sprayed particles are fused can be surely obtained. As the blending amount increases, the fusion state can be easily obtained, but blending exceeding 50 wt% of the entire joint metal phase is not preferred because the toughness of the joint metal phase of the coating is reduced.
【００１９】溶射材料には、上記セラミック及びＮｉ−
Ｐ合金の他に、目地金属相形成成分としてＣｏ基合金や
Ｎｉ−Ｃｒ基合金を、又、フラックス形成成分としてＢ
やＳｉを適量配合するなどして、サーメット材料として
の本来特性あるいは溶射材料としての施工適性をバラン
スよく具備させておくことが望ましい。又、上記観点に
より、ＷＣなどの硬質セラミックスとＣｏ基合金などの
目地金属相形成成分が配合された既製のサーメット溶射
材料に対してなるべく少量のＮｉ−Ｐ合金を追加配合す
る処方が好適な実施形態の一つとなる。前述の通り、少
量のＮｉ−Ｐ合金配合で溶射粒子が融結した状態の溶射
被覆を得るには、Ｎｉ−Ｎｉ3Ｐ相の共晶点に近い、Ｐ
含量が９〜14％程度のＮｉ−Ｐ合金によるのが有利であ
る。このようなＮｉ−Ｐ合金であれば５〜10wt％程度の
少量の配合で事足りる。The thermal spray material includes the above ceramic and Ni-
In addition to the P alloy, a Co-based alloy or a Ni-Cr based alloy is used as a joint metal phase forming component, and a B-based alloy is used as a flux forming component.
It is desirable that the proper properties of the cermet material or the suitability for application as a thermal spray material be provided in a well-balanced manner by blending an appropriate amount of Si or Si. In addition, from the above viewpoint, it is preferable to add a small amount of a Ni-P alloy as much as possible to an existing cermet sprayed material in which a hard ceramic such as WC and a joint metal phase forming component such as a Co-based alloy are mixed. It is one of the forms. As described above, the small amount of spray particles in Ni-P alloy blending obtain spray coating in a state in which Toruyui, close to the eutectic point of Ni-Ni 3 P phase, P
It is advantageous to use a Ni-P alloy having a content of about 9 to 14%. With such a Ni-P alloy, a small amount of about 5 to 10% by weight is sufficient.
【００２０】次に、本発明ロールを製造するための溶射
被覆形成方法について説明する。先ず、本発明ロールの
製造に最適の溶射手段はプラズマ溶射法である。プラズ
マ溶射法を通常の作業温度条件で用いた場合、従来の自
溶性合金基サーメット溶射材料であれば、溶射のまゝで
は本発明ロールのような溶射粒子が融結した状態の被覆
とはならず、又、作業温度を上げると硬質セラミック成
分の蒸発につながるという懸念から作業温度を上げるの
は難しいため、前記再溶融処理により対処されてきた。
これに対して、低融点のＮｉ−Ｐ合金を配合した溶射材
料を用いる本発明ロールの場合は、通常の作業温度条件
でプラズマ溶射したまゝで、溶射粒子が融結した状態の
被覆が得られる。Next, a method for forming a thermal spray coating for producing the roll of the present invention will be described. First, a plasma spraying method is the most suitable spraying means for manufacturing the roll of the present invention. When the plasma spraying method is used under normal working temperature conditions, if it is a conventional self-fluxing alloy-based cermet sprayed material, the coating in the state where the sprayed particles such as the roll of the present invention are fused before the spraying is not performed. In addition, since it is difficult to raise the working temperature because there is a concern that an increase in the working temperature leads to evaporation of the hard ceramic component, it has been dealt with by the re-melting treatment.
On the other hand, in the case of the roll of the present invention using a thermal spray material blended with a low melting point Ni-P alloy, a coating in which the thermal spray particles are fused is obtained until plasma spraying is performed under normal operating temperature conditions. Can be
【００２１】前記ＨＶＯＦやガスフレーム溶射法など、
プラズマ溶射法以外の溶射手段によっても本発明ロール
の製造は可能である。即ち、これらの溶射手段による場
合も、前述のように、溶射粒子がロール面に付着した時
点で前記Ｎｉ−Ｐ合金の固相線融点880℃以上の温度を
経ていれば、溶射粒子が融結した状態の被覆が溶射のま
ゝで得られるものである。但し、上記プラズマ溶射法以
外の溶射手段において上記融結した状態の被覆を得るた
めには作業温度を通常より高くする必要があり、これは
溶射作業能率の低下につながることが多い。よって、本
発明ロールを溶射のまゝで得るには、本来溶射能率が高
く、しかも通常の作業温度条件で実施できるプラズマ溶
射法によるのが経済的に有利である。The HVOF, gas flame spraying method, etc.
The roll of the present invention can be manufactured by spraying means other than the plasma spraying method. That is, in the case of using these spraying means, as described above, if the temperature of the solid-state melting point of the Ni-P alloy has passed 880 ° C. or more at the time when the sprayed particles adhered to the roll surface, the sprayed particles are fused. The resulting coating is obtained before thermal spraying. However, in order to obtain the fused coating in a spraying means other than the plasma spraying method, it is necessary to raise the working temperature higher than usual, which often leads to a reduction in the spraying work efficiency. Therefore, in order to obtain the roll of the present invention before thermal spraying, it is economically advantageous to use the plasma thermal spraying method which has a high thermal spraying efficiency and can be carried out under ordinary working temperature conditions.
【００２２】本発明ロールにおける、溶射粒子が融結し
た状態の被覆は、前述のように、前記Ｎｉ−Ｐ合金を配
合した溶射材料を溶射して、溶射粒子が融結せずに堆積
した被覆を一旦形成し、このあと該堆積被覆をＮｉ−Ｐ
合金の固相線融点880℃以上の温度に加熱することによ
っても得られる。この場合も、従来の自溶性合金基の溶
射被覆に対する再溶融処理よりも低入熱で済むことか
ら、母材との間に合金層が形成されて良好に接合されて
いながら、従来の再溶融処理のような合金層の発達はな
く、被覆更新時の合金層除去も手間をかけずに行える。As described above, the coating of the roll of the present invention in which the thermal spray particles are fused is formed by spraying the thermal spray material containing the Ni-P alloy and depositing the thermal spray particles without fusion. Once formed, and then the deposited coating is Ni-P
It can also be obtained by heating to a temperature above the solidus melting point 880 ° C. of the alloy. Also in this case, since the heat input is lower than in the conventional re-melting treatment for the self-fluxing alloy-based thermal spray coating, the alloy layer is formed between the base material and the base material, and the conventional re-melting is performed. There is no development of the alloy layer as in the treatment, and the removal of the alloy layer at the time of coating renewal can be performed without any trouble.
【００２３】なお、溶射被覆層内にＮｉ−Ｐ合金の溶融
相を生じさせるための上記加熱を、従来の再溶融処理と
同様1000℃以上に加熱して行ってもよく、この場合も、
Ｎｉ−Ｐ合金の固相線融点が低いことから、従来の再溶
融処理よりも短時間の加熱即ち低い入熱で済み、母材と
の間の合金の発達はやはり少ない。The heating for generating the molten phase of the Ni—P alloy in the thermal spray coating layer may be performed by heating to 1000 ° C. or higher as in the conventional remelting treatment.
Since the solidus melting point of the Ni-P alloy is low, heating in a shorter time, that is, lower heat input than in the conventional remelting process, is sufficient, and the development of the alloy with the base metal is still small.
【００２４】[0024]
【実施例】直径300mm，巾1200mm，肉厚20mmの鋼製ロー
ル胴部の切片を母材として本発明仕様及び比較のための
従来仕様の溶射被覆試験片を製作し、被覆の性状を比較
して本発明ロールの優位性を検証した。[Example] Using a section of a steel roll body having a diameter of 300 mm, a width of 1200 mm and a wall thickness of 20 mm as a base material, a thermal spray coating test specimen of the present invention specification and a conventional specification for comparison were manufactured, and the coating properties were compared. The superiority of the roll of the present invention was verified.
【００２５】被覆仕様と被覆性状の関係を表１に示す。
表１に見る通り、Ｎｉ−Ｐ合金を配合したサーメット溶
射材料により融結状態に形成された被覆を有する本発明
例にあっては、被覆中に気孔が認められなかった。又、
上記本発明例にあっては、母材との間に合金層が確実に
形成されていて、母材への強固な接合が窺えるにも拘ら
ず、該合金層は厚く発達しておらず、合金層が厚く発達
した従来被覆（No.10比較例参照）と比べて、被覆更新
時の合金層の除去も容易になることが判った。更に又、
上記本発明例の被覆にあっては表面硬さも比較例の従来
技術と同様に実現されており、本発明構成により被覆の
耐摩耗性が低下しないことも確認された。Table 1 shows the relationship between coating specifications and coating properties.
As shown in Table 1, no pores were observed in the coating of the present invention example having the coating formed in a fused state by the cermet sprayed material containing the Ni-P alloy. or,
In the example of the present invention, the alloy layer is reliably formed between the base material, and despite the fact that a strong bond to the base material can be seen, the alloy layer is not thickly developed, It was found that the removal of the alloy layer at the time of coating renewal was easier than that of the conventional coating in which the alloy layer was developed thick (see Comparative Example No. 10). Furthermore,
In the coating of the present invention, the surface hardness was also realized in the same manner as in the prior art of the comparative example, and it was confirmed that the abrasion resistance of the coating was not reduced by the constitution of the present invention.
【００２６】[0026]
【表 １】 [Table 1]
【００２７】[0027]
【発明の効果】本発明は、上述の通りサーメット溶射被
覆ロールの溶射被覆をＮｉ−Ｎｉ3Ｐ相のＮｉ−Ｐ合金
を配合したサーメット溶射材料を用いて、溶射粒子が融
結した状態に形成したことを特徴とする構成により、気
孔の存在しえないサーメット溶射被覆を有する金属板処
理ライン用ロールを得たものである。According to the present invention, formed in a state with a cermet thermal spray material the spray coating formulated with Ni-P alloy of Ni-Ni 3 P phase as cermet thermal spray coating roll described above, the sprayed particles are Toruyui With this configuration, a roll for a metal plate processing line having a cermet sprayed coating having no pores is obtained.
【００２８】鋼板，アルミニウム板，銅板などを通板し
て処理する金属板処理ラインにおいては、ロールの表面
状態が通板中の金属板の表面品位を左右することが多
い。このため、摩擦や傷入りによる表面状態の劣化が顕
著になる前に、その場での手入れあるいは再研摩や更新
を行って金属板の商品価値が損なわれないようにする作
業が行われている。In a metal sheet processing line for processing by passing a steel sheet, an aluminum sheet, a copper sheet, or the like, the surface condition of the roll often determines the surface quality of the metal sheet being passed. For this reason, before the deterioration of the surface state due to friction or scratching becomes remarkable, work is performed so that the commercial value of the metal plate is not impaired by performing on-site care or re-polishing or updating. .
【００２９】上記作業にはラインストップ、更にはロー
ルの着脱が必要であり、これに伴うライン稼働率の低下
がコストとして加算される。しかして、このコストの方
がロール自体の原単位よりも大きいケースが殆どである
ことから、価格増に十分見合った寿命増がもたらされる
サーメット溶射被覆ロールが多用されるようになってき
ていた。それ故、溶射被覆中の気孔に起因する前記堆積
顆粒の再転着、あるいは、めっき液の浸込みによるコン
ダクタロール被覆の剥離といった問題は、稀にしか発生
しなくても早々に解決されるべきものであった。The above operation requires a line stop and a roll attachment / detachment, and the accompanying decrease in the line operation rate is added as a cost. In many cases, this cost is larger than the basic unit of the roll itself, and therefore, cermet spray-coated rolls, which provide an increase in service life sufficiently in proportion to the price increase, have come to be used frequently. Therefore, problems such as retransfer of the deposited granules due to pores in the thermal spray coating or peeling of the conductor roll coating due to infiltration of the plating solution should be solved as soon as possible even if they occur rarely. Met.
【００３０】即ち、上記問題を安価に解決できる手段を
提供し、更には、前述のように溶射被覆の更新も安価に
行えるようにした本発明の、当該産業への貢献は絶大で
あると云える。That is, the present invention, which provides a means for solving the above-mentioned problems at a low cost and makes it possible to renew the thermal spray coating at a low cost as described above, makes a great contribution to the industry. I can.
【図１】本発明ロールの被覆部分の拡大部分断面図。FIG. 1 is an enlarged partial cross-sectional view of a covering portion of a roll of the present invention.
【図２】硬質セラミックスの微粒子が第一の目地金属相
に分散した状態を例示した模式図。FIG. 2 is a schematic view illustrating a state in which fine particles of hard ceramics are dispersed in a first joint metal phase.
【図３】従来ロールの一例の被覆部分の拡大部分断面
図。FIG. 3 is an enlarged partial sectional view of a covering portion of an example of a conventional roll.
【図４】従来ロールの他の例の被覆部分の拡大部分断面
図。FIG. 4 is an enlarged partial cross-sectional view of a covering portion of another example of the conventional roll.
１ 母材 2a〜2c 被覆 ３ 堆積粒子 ４ 隙間（気孔） ５ 硬質セラミックスの微粒子 ６ 目地金属相 ６-１ 第一の目地金属相 ６-２ 第二の目地金属相 ７ 複合領域 8a〜8c 合金層 REFERENCE SIGNS LIST 1 base material 2a to 2c coating 3 deposited particles 4 gaps (pores) 5 fine particles of hard ceramics 6 joint metal phase 6-1 first joint metal phase 6-2 second joint metal phase 7 composite area 8a to 8c alloy layer
───────────────────────────────────────────────────── フロントページの続き (72)発明者 原 口 博 福岡県筑紫郡那珂川町王塚台２−14 (72)発明者 林 宏 樹 福岡県福岡市東区香椎駅前１−４−14 メ ゾン・ド香椎204 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hiroshi Haraguchi 2-14 Otsukadai, Nakagawa-machi, Chikushi-gun, Fukuoka Prefecture (72) Inventor Hiroki Hayashi 1-4-14 Kashii Station, Higashi-ku, Fukuoka City, Fukuoka Maison de Kashii 204
Claims (5)
たロールにおいて、該溶射被覆を、Ｎｉ−Ｎｉ3Ｐ相の
Ｎｉ−Ｐ合金を配合したサーメット溶射材料を用いて、
溶射粒子が融結した状態に形成したことを特徴とする金
属板処理ライン用ロール。1. A roll having a surface coated with a thermal spray coating of a cermet material, wherein the thermal spray coating is formed by using a cermet thermal spray material blended with a Ni—P alloy of a Ni—Ni 3 P phase.
A roll for a metal plate processing line, wherein the sprayed particles are formed in a fused state.
ものである請求項１に記載の金属板処理ライン用ロー
ル。2. The roll according to claim 1, wherein the Ni—P alloy has a P content of 9 to 14% by weight.
物及び５wt％以上、目地金属相形成成分全体の50wt％以
下の量の前記Ｎｉ−Ｐ合金を配合したものである請求項
１又は２に記載の金属板処理ライン用ロール。3. The thermal spraying material according to claim 1, wherein 70% to 90% by weight of the hard carbide and 5% by weight or more of the Ni-P alloy in an amount of 50% by weight or less of the entire joint metal phase forming component. 3. The roll for a metal plate processing line according to 2.
溶射粒子を、880℃以上の温度で付着させて、ロールの
表面に溶射被覆を形成させることを特徴とする請求項１
〜３のいずれかに記載の金属板処理ライン用ロールの製
造方法。4. The thermal spraying method according to claim 1, wherein the thermal spraying is performed by spraying the thermal spray particles of the thermal spraying material at a temperature of 880 ° C. or higher to form a thermal spray coating on the surface of the roll.
4. The method for producing a roll for a metal sheet processing line according to any one of claims 1 to 3.
溶射粒子が堆積した被覆を形成し、次いで、該被覆を88
0℃以上の温度に加熱することを特徴とする請求項１〜
３のいずれかに記載の金属板処理ライン用ロールの製造
方法。5. The sprayed material is sprayed to form a coating with spray particles deposited on the surface of the roll, and the coating is then coated with a coating of 88%.
The composition is heated to a temperature of 0 ° C or higher.
3. The method for producing a roll for a metal sheet processing line according to any one of 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9202647A JPH1129845A (en) | 1997-07-14 | 1997-07-14 | Roll for metal sheet treatment line, and its production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9202647A JPH1129845A (en) | 1997-07-14 | 1997-07-14 | Roll for metal sheet treatment line, and its production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH1129845A true JPH1129845A (en) | 1999-02-02 |
Family
ID=16460820
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9202647A Pending JPH1129845A (en) | 1997-07-14 | 1997-07-14 | Roll for metal sheet treatment line, and its production |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH1129845A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110343992A (en) * | 2019-08-05 | 2019-10-18 | 王鸿翔 | A kind of spraying method of plasma wearing layer |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5830385B2 (en) * | 1980-04-24 | 1983-06-29 | 日本タングステン株式会社 | Tungsten carbide thermal spray powder and its manufacturing method |
| JPS60103169A (en) * | 1983-11-11 | 1985-06-07 | Showa Denko Kk | Composite powder for thermal spraying |
| JPS60135561A (en) * | 1983-12-23 | 1985-07-18 | Riken Corp | Wear-resistant sprayed layer |
| JPS61264167A (en) * | 1985-05-18 | 1986-11-22 | Koei Seiko Kk | Surface hardening method for iron base material |
| JPH03274252A (en) * | 1990-03-26 | 1991-12-05 | Teikoku Piston Ring Co Ltd | Wear resistant composite spraying material and its production |
| JPH07173592A (en) * | 1993-12-17 | 1995-07-11 | Nippon Steel Corp | Pot roll for galvanizing |
| JPH0941115A (en) * | 1995-07-31 | 1997-02-10 | Nippon Tungsten Co Ltd | Thermal spray coating film and its forming method |
| JPH0978219A (en) * | 1995-09-11 | 1997-03-25 | Nittetsu Hard Kk | Process roll having thermal spray thin film |
-
1997
- 1997-07-14 JP JP9202647A patent/JPH1129845A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5830385B2 (en) * | 1980-04-24 | 1983-06-29 | 日本タングステン株式会社 | Tungsten carbide thermal spray powder and its manufacturing method |
| JPS60103169A (en) * | 1983-11-11 | 1985-06-07 | Showa Denko Kk | Composite powder for thermal spraying |
| JPS60135561A (en) * | 1983-12-23 | 1985-07-18 | Riken Corp | Wear-resistant sprayed layer |
| JPS61264167A (en) * | 1985-05-18 | 1986-11-22 | Koei Seiko Kk | Surface hardening method for iron base material |
| JPH03274252A (en) * | 1990-03-26 | 1991-12-05 | Teikoku Piston Ring Co Ltd | Wear resistant composite spraying material and its production |
| JPH07173592A (en) * | 1993-12-17 | 1995-07-11 | Nippon Steel Corp | Pot roll for galvanizing |
| JPH0941115A (en) * | 1995-07-31 | 1997-02-10 | Nippon Tungsten Co Ltd | Thermal spray coating film and its forming method |
| JPH0978219A (en) * | 1995-09-11 | 1997-03-25 | Nittetsu Hard Kk | Process roll having thermal spray thin film |
Non-Patent Citations (1)
| Title |
|---|
| 岩瀬慶三,岡本正三, 二元合金の標準状態図, JPN4007016571, JP, pages 378, ISSN: 0000886187 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110343992A (en) * | 2019-08-05 | 2019-10-18 | 王鸿翔 | A kind of spraying method of plasma wearing layer |
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