JPH0633149A - Heat treatment furnace roll with a carbide coating with excellent build-up resistance, heat resistance, and wear resistance - Google Patents
Heat treatment furnace roll with a carbide coating with excellent build-up resistance, heat resistance, and wear resistanceInfo
- Publication number
- JPH0633149A JPH0633149A JP4188438A JP18843892A JPH0633149A JP H0633149 A JPH0633149 A JP H0633149A JP 4188438 A JP4188438 A JP 4188438A JP 18843892 A JP18843892 A JP 18843892A JP H0633149 A JPH0633149 A JP H0633149A
- Authority
- JP
- Japan
- Prior art keywords
- resistance
- alloy
- carbide
- nickel
- chromium
- 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)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
Abstract
(57)【要約】
【目的】 本発明は薄鋼板の連続熱処理炉等の熱処理炉
内ロールを提供する。
【構成】 クロム炭化物を重量％で５０〜９０％含み、
残部はニッケル、コバルトの１種又は２種と、クロム、
アルミニウムの１種又は２種を含む合金（Ａとする。た
だしニッケル・クロムのみの合金をのぞく。）、又はニ
ッケル、コバルトの１種又は２種を含むＭクラリー合金
（ＭＣｒＡｌＹ合金、Ｂとする。）のうち、Ａ、Ｂの何
れか１種の合金と不可避不純物よりなるサーメット材料
をロール表面に溶射してなる耐ビルドアップ性、耐熱
性、耐摩耗性に優れた炭化物系皮膜を有する熱処理炉内
ロール。(57) [Summary] [Object] The present invention provides a roll in a heat treatment furnace such as a continuous heat treatment furnace for thin steel sheets. [Constitution] Chromium carbide is contained in an amount of 50 to 90% by weight,
The balance is one or two of nickel and cobalt, and chromium,
An alloy containing one or two kinds of aluminum (referred to as A, excluding an alloy containing only nickel and chromium), or an M-clary alloy containing one or two kinds of nickel and cobalt (MCrAlY alloy, B). Among these, a heat treatment furnace having a carbide-based coating excellent in build-up resistance, heat resistance and wear resistance, which is obtained by spraying a cermet material consisting of an alloy of any one of A and B and unavoidable impurities on the roll surface. Inner roll.
Description
【０００１】[0001]
【産業上の利用分野】本発明は薄鋼板の連続熱処理炉等
の熱処理炉内ロールに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat treatment furnace roll such as a continuous heat treatment furnace for thin steel sheets.
【０００２】[0002]
【従来の技術】従来この種のロールには、耐熱性を与え
るため、クロム炭化物とＮｉ−Ｃｒ合金の混合材料と
か、焼結材料をロール表面に溶射したりして、主として
クロム炭化物皮膜による特性改善がはかられてきた（例
えば特開昭５８−１４１３３８号公報や特開昭６２−１
３６４２１号公報参照）。しかしながら、これらは何れ
もＮｉ−Ｃｒ合金を結合剤として使用しているため、耐
熱性の点はともかくとして、スケール等が還元されてロ
ール表面に附着しやすいために、ビルドアップ性は従来
のものと同程度であり、必ずしも良好とはいえなかっ
た。2. Description of the Related Art Conventionally, in order to impart heat resistance to a roll of this type, a mixed material of chromium carbide and a Ni--Cr alloy or a sintered material is sprayed on the surface of the roll, and the characteristics mainly due to the chromium carbide film are provided. Improvements have been made (for example, JP-A-58-141338 and JP-A-62-1).
(See Japanese Patent No. 36421). However, since all of these use Ni-Cr alloy as a binder, the build-up property is the same as the conventional one because the scale etc. is reduced and sticks easily to the roll surface regardless of the heat resistance. And was not necessarily good.
【０００３】[0003]
【発明が解決しようとする課題】したがってビルドアッ
プ性を改良するためには、合金成分を改良するか、合金
皮膜をビルドアップしにくいように改良することが必要
であった。本発明ではＮｉ−Ｃｒ系合金の表面を緻密な
酸化皮膜をつくる耐熱合金とするか、クロム炭化物以外
の炭化物を共存させることにより、添加炭化物の酸化物
で合金部表面まで被覆することにより、耐ビルドアップ
性を改善する手法とすべく、本発明を創案した。Therefore, in order to improve the build-up property, it has been necessary to improve the alloy components or the alloy film so that it is difficult to build up. In the present invention, the surface of the Ni-Cr alloy is made a heat-resistant alloy that forms a dense oxide film, or by coexisting with a carbide other than chromium carbide, the surface of the alloy portion is coated with an oxide of the added carbide, The present invention was devised as a method for improving build-up property.
【０００４】[0004]
【課題を解決するための手段】すなわち、本発明の要旨
とするところは下記のとおりである。 （１） クロム炭化物を重量％で５０〜９０％含み、残
部はニッケル、コバルトの１種又は２種と、クロム、ア
ルミニウムの１種又は２種を含む合金（Ａとする。ただ
しニッケル・クロムのみの合金をのぞく。）、又はニッ
ケル、コバルトの１種又は２種を含むＭクラリー合金
（ＭＣｒＡｌＹ合金、Ｂとする。）のうち、Ａ、Ｂの何
れか１種の合金と不可避不純物よりなるサーメット材料
をロール表面に溶射してなる耐ビルドアップ性、耐熱
性、耐摩耗性に優れた炭化物系皮膜を有する熱処理炉内
ロール。That is, the gist of the present invention is as follows. (1) An alloy containing 50 to 90% by weight of chromium carbide and the balance of one or two of nickel and cobalt and one or two of chromium and aluminum (referred to as A. However, only nickel-chromium) ), Or a C cermet consisting of an alloy of any one of A and B and an unavoidable impurity among M Clarry alloys (MCrAlY alloys and B) containing one or two of nickel and cobalt. A roll in a heat treatment furnace that has a carbide coating with excellent build-up resistance, heat resistance, and wear resistance that is obtained by spraying a material onto the roll surface.
【０００５】（２） クロム炭化物を含み、他にニオブ
炭化物、チタン炭化物の１種以上を炭化物合計の重量％
で５０〜９０％含み、残部はニッケル、コバルトの１種
又は２種と、クロム、アルミニウムの１種又は２種を含
む合金（Ａとする。）、又はニッケル、コバルトの１種
又は２種を含むＭクラリー合金（ＭＣｒＡｌＹ合金、Ｂ
とする。）のうち、Ａ、Ｂの何れか１種の合金と不可避
不純物よりなるサーメット材料をロール表面に溶射して
なる耐ビルドアップ性、耐熱性、耐摩耗性に優れた炭化
物系皮膜を有する熱処理炉内ロール。(2) Chromium carbide is included, and at least one of niobium carbide and titanium carbide is contained in a weight percentage of the total amount of carbide.
Alloy containing 50 to 90% by weight, the balance being one or two kinds of nickel and cobalt, and one or two kinds of chromium and aluminum (referred to as A), or one or two kinds of nickel and cobalt. Including M Clarley alloy (MCrAlY alloy, B
And Among these, a heat treatment furnace having a carbide-based coating excellent in build-up resistance, heat resistance and wear resistance, which is obtained by spraying a cermet material consisting of an alloy of any one of A and B and unavoidable impurities on the roll surface. Inner roll.
【０００６】[0006]
【作用】以下、本発明を詳細に説明する。本発明の溶射
層添加成分の効果と含有量限定の理由は下記のとおりで
ある。クロム炭化物（Ｃｒ3 Ｃ2 と表記）：耐熱性のあ
る炭化物であって、高温硬度と耐摩耗性を与えるために
添加する。したがって添加量が少ないと耐摩耗性が得ら
れないし、過量の場合には皮膜の密着性が低下し、耐熱
衝撃性が低下してくる。したがって含有量は重量％で５
０〜９０％とする。The present invention will be described in detail below. The effects of the components added to the thermal spray layer of the present invention and the reasons for limiting the contents are as follows. Chromium carbide (denoted as Cr 3 C 2 ): It is a heat-resistant carbide and is added to impart high temperature hardness and wear resistance. Therefore, if the added amount is small, abrasion resistance cannot be obtained, and if the added amount is excessive, the adhesion of the coating is lowered and the thermal shock resistance is lowered. Therefore, the content is 5% by weight.
0 to 90%.
【０００７】Ｎｉ、Ｃｏ：地合金の主成分で、炭化物の
結合剤として働く。多量に過ぎるとビルドアップ性を大
きくし、少量の場合結合効果が小さい。したがってこれ
ら金属の合計量を好ましくは５〜２０％程度とする。 Ｃｒ、Ａｌ：地合金に耐熱性を与えるため添加される成
分である。しかし多量に添加すると、地合金と炭化物の
結合力を低下する。又、耐ビルドアップ性の点ではＡｌ
の効果が大きいため（Ｃｒ＋２Ａｌ）重量％で８〜２５
％とするのがよい。Ni, Co: Main components of the ground alloy, which act as a binder for carbides. If the amount is too large, the build-up property is increased, and if the amount is too small, the binding effect is small. Therefore, the total amount of these metals is preferably about 5 to 20%. Cr, Al: Components added to impart heat resistance to the base alloy. However, if added in a large amount, the bond strength between the base alloy and the carbide is reduced. Also, in terms of build-up resistance, Al
8 to 25% by weight (Cr + 2Al) due to the large effect of
It is good to set it as%.
【０００８】なお本発明のＭＣｒＡｌＹ合金のＮｉ、Ｃ
ｏ、Ｃｒ、Ａｌの含有量もこの範囲に入るものを使うの
がよい。 Ｙ：溶射皮膜の密着性、炭化物と合金との結合性をよく
する効果があり、Ｍクラリー合金として２％以下添加す
るとよい。しかし多量に添加すると結合力はかえって低
下する。The Ni and C of the MCrAlY alloy of the present invention
It is preferable to use those whose contents of o, Cr and Al fall within this range. Y: It has an effect of improving the adhesiveness of the sprayed coating and the bondability between the carbide and the alloy. However, if added in a large amount, the binding force will rather decrease.
【０００９】ニオブ炭化物（ＮｂＣと表記）：Ｃｒ、Ａ
ｌ等との共存下で耐酸化性を発揮し、炭化物含有による
耐摩耗性を向上する。又少量に生成するニオブ酸化物の
効果と相まって、耐ビルドアップ性を大きく改善する。
しかし過量に添加すると緻密な皮膜が得られない。好ま
しくは３０％までである。 チタン炭化物（ＴｉＣと表記）：チタン炭化物はＣｒ3
Ｃ2 の代替炭化物として添加可能な炭化物であって、２
０％程度まで代替可能である。しかし多量に添加すると
皮膜の耐熱性、特に高温硬度が低下してくるため、上記
量にとどめるのがよい。Niobium carbide (denoted as NbC): Cr, A
It exhibits oxidation resistance in the coexistence with 1 etc. and improves wear resistance due to inclusion of carbides. Further, combined with the effect of niobium oxide produced in a small amount, the build-up resistance is greatly improved.
However, if added in excess, a dense film cannot be obtained. It is preferably up to 30%. Titanium carbide (denoted as TiC): Titanium carbide is Cr 3
A carbide that can be added as a substitute for C 2 and is 2
Substitution is possible up to about 0%. However, if added in a large amount, the heat resistance of the coating, especially the high temperature hardness, will decrease, so it is preferable to keep the above amount.
【００１０】なお、溶射法はプラズマ溶射、高速ガス溶
射法で良好な皮膜を得ることができ、皮膜厚みも５０〜
２００μｍ程度で十分良好な耐熱性、耐ビルドアップ性
を与えることができる。The thermal spraying method can obtain a good coating by plasma spraying or high-speed gas thermal spraying and has a coating thickness of 50 to 50.
About 200 μm can provide sufficiently good heat resistance and build-up resistance.
【００１１】[0011]
【実施例】以下本発明の実施例を表により説明する。表
１でＮｏ．１〜Ｎｏ．９が本発明の実施例であり、溶射
皮膜硬度も従来例（合金がＮｉ−Ｃｒ系）のものよりも
若干高く、耐摩耗性に優れることがうかがえる。又、合
金の特性が良好なため、熱衝撃試験での耐用回数が高
く、従来材より遙かに良好である。更に耐ビルドアップ
性に優れることは、表１のＭＮ値の値が大きいことから
理解できる。EXAMPLES Examples of the present invention will be described below with reference to tables. In Table 1, No. 1-No. No. 9 is an example of the present invention, and the hardness of the sprayed coating is slightly higher than that of the conventional example (the alloy is Ni-Cr type), and it can be seen that the wear resistance is excellent. Further, since the alloy has good properties, it has a high durability in a thermal shock test and is far better than conventional materials. Further, the excellent build-up resistance can be understood from the large MN value in Table 1.
【００１２】[0012]
【表１】 [Table 1]
【００１３】[0013]
【発明の効果】以上述べた如く、本発明の溶射皮膜をも
つロールは、熱処理炉内ロールとして、良好な特性を示
すことは明らかであり、その工業的価値は極めて大き
い。As described above, it is clear that the roll having the thermal spray coating of the present invention exhibits good characteristics as a roll in a heat treatment furnace, and its industrial value is extremely large.
【図１】ビルドアップ試験法（７５０℃、５％Ｈ２＋Ｎ
２雰囲気中、往復回数２０回／分、３時間連続テスト）
を示す図である。FIG. 1 Build-up test method (750 ° C., 5% H2 + N
(2 atmospheres, reciprocation 20 times / min, 3 hours continuous test)
FIG.
１ 試験片（５×３０×１００ｍｍのＳＵＳ３０４
板） ２ 圧下用ロール（８ｋｇ） ３ Ｆｅ3 Ｏ4 パウダー Ａ、Ｂ 溶射面1 test piece (5 × 30 × 100 mm SUS304
Plate) 2 Roll for reduction (8 kg) 3 Fe 3 O 4 powder A, B Sprayed surface
Claims (2)
み、残部はニッケル、コバルトの１種又は２種と、クロ
ム、アルミニウムの１種又は２種を含む合金（Ａとす
る。ただしニッケル・クロムのみの合金をのぞく。）、
又はニッケル、コバルトの１種又は２種を含むＭクラリ
ー合金（ＭＣｒＡｌＹ合金、Ｂとする。）のうち、Ａ、
Ｂの何れか１種の合金と不可避不純物よりなるサーメッ
ト材料をロール表面に溶射してなる耐ビルドアップ性、
耐熱性、耐摩耗性に優れた炭化物系皮膜を有する熱処理
炉内ロール。1. An alloy (A) containing 50 to 90% by weight of chromium carbide, and the balance comprising one or two of nickel and cobalt and one or two of chromium and aluminum (provided that nickel. Except for alloys containing only chromium.),
Or, of M Clarley alloys containing one or two of nickel and cobalt (MCrAlY alloy, B), A,
Build-up resistance obtained by spraying a cermet material consisting of any one alloy of B and inevitable impurities onto the roll surface,
A roll in a heat treatment furnace that has a carbide coating with excellent heat resistance and wear resistance.
物、チタン炭化物の１種以上を炭化物合計の重量％で５
０〜９０％含み、残部はニッケル、コバルトの１種又は
２種と、クロム、アルミニウムの１種又は２種を含む合
金（Ａとする。）、又はニッケル、コバルトの１種又は
２種を含むＭクラリー合金（ＭＣｒＡｌＹ合金、Ｂとす
る。）のうち、Ａ、Ｂの何れか１種の合金と不可避不純
物よりなるサーメット材料をロール表面に溶射してなる
耐ビルドアップ性、耐熱性、耐摩耗性に優れた炭化物系
皮膜を有する熱処理炉内ロール。2. A chromium carbide, and at least one of niobium carbide and titanium carbide in an amount of 5% by weight based on the total weight of the carbides.
The alloy contains 0 to 90%, and the balance contains one or two kinds of nickel and cobalt and one or two kinds of chromium and aluminum (referred to as A), or one or two kinds of nickel and cobalt. Build-up resistance, heat resistance, and wear resistance obtained by thermal spraying a cermet material consisting of an alloy of any one of A and B and unavoidable impurities among M Clarry alloys (MCrAlY alloys and B) on the roll surface. Heat treatment furnace roll with a carbide coating with excellent properties.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4188438A JPH0633149A (en) | 1992-07-15 | 1992-07-15 | Heat treatment furnace roll with a carbide coating with excellent build-up resistance, heat resistance, and wear resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4188438A JPH0633149A (en) | 1992-07-15 | 1992-07-15 | Heat treatment furnace roll with a carbide coating with excellent build-up resistance, heat resistance, and wear resistance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0633149A true JPH0633149A (en) | 1994-02-08 |
Family
ID=16223685
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4188438A Pending JPH0633149A (en) | 1992-07-15 | 1992-07-15 | Heat treatment furnace roll with a carbide coating with excellent build-up resistance, heat resistance, and wear resistance |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0633149A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100276643B1 (en) * | 1996-12-24 | 2001-01-15 | 이구택 | Surface coating material composition of roll in zinc bath with excellent corrosion resistance |
| JP2008545065A (en) * | 2005-07-04 | 2008-12-11 | コリア インスティテュート オブ サイエンス アンド テクノロジー | Coating agent having heat resistance, wear resistance and low friction characteristics and coating method thereof |
| WO2011074131A1 (en) | 2009-12-16 | 2011-06-23 | 住友金属工業株式会社 | Member for conveying high-temperature materials |
-
1992
- 1992-07-15 JP JP4188438A patent/JPH0633149A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100276643B1 (en) * | 1996-12-24 | 2001-01-15 | 이구택 | Surface coating material composition of roll in zinc bath with excellent corrosion resistance |
| JP2008545065A (en) * | 2005-07-04 | 2008-12-11 | コリア インスティテュート オブ サイエンス アンド テクノロジー | Coating agent having heat resistance, wear resistance and low friction characteristics and coating method thereof |
| JP4917095B2 (en) * | 2005-07-04 | 2012-04-18 | コリア・インスティテュート・オブ・サイエンス・アンド・テクノロジー | Coating agent having heat resistance, wear resistance and low friction characteristics and coating method thereof |
| WO2011074131A1 (en) | 2009-12-16 | 2011-06-23 | 住友金属工業株式会社 | Member for conveying high-temperature materials |
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