JPS62207549A - Guide roll for continuous casting - Google Patents
Guide roll for continuous castingInfo
- Publication number
- JPS62207549A JPS62207549A JP4930786A JP4930786A JPS62207549A JP S62207549 A JPS62207549 A JP S62207549A JP 4930786 A JP4930786 A JP 4930786A JP 4930786 A JP4930786 A JP 4930786A JP S62207549 A JPS62207549 A JP S62207549A
- Authority
- JP
- Japan
- Prior art keywords
- guide roll
- continuous casting
- wear resistance
- base
- hard particles
- 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
- 238000009749 continuous casting Methods 0.000 title claims description 9
- 239000000463 material Substances 0.000 claims abstract description 10
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 9
- 239000000956 alloy Substances 0.000 claims abstract description 9
- 239000002245 particle Substances 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims abstract description 6
- 238000003756 stirring Methods 0.000 claims description 4
- 229910000851 Alloy steel Inorganic materials 0.000 claims description 2
- 239000000696 magnetic material Substances 0.000 claims description 2
- 230000000717 retained effect Effects 0.000 claims 1
- 238000007711 solidification Methods 0.000 claims 1
- 230000008023 solidification Effects 0.000 claims 1
- 238000003466 welding Methods 0.000 abstract description 10
- 239000000843 powder Substances 0.000 abstract description 9
- 239000011159 matrix material Substances 0.000 abstract 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910000617 Mangalloy Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 229910000963 austenitic stainless steel Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 150000001247 metal acetylides Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/12—Accessories for subsequent treating or working cast stock in situ
- B22D11/128—Accessories for subsequent treating or working cast stock in situ for removing
- B22D11/1287—Rolls; Lubricating, cooling or heating rolls while in use
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、連続鋳造設備用のガイドロール（以下ガイド
ロールと記す）に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a guide roll (hereinafter referred to as a guide roll) for continuous casting equipment.
ガイドロールは、連続鋳造設備の鋳型の直後部を一方端
として多数列設されたもので、前記鋳型内で生成された
薄い凝固殻を内部の溶湯の静圧に対抗して外周側からバ
ックアップ保持しつつ、駆動回転により引抜く役割を有
する。A large number of guide rolls are installed in a row with one end immediately after the mold of continuous casting equipment, and they back up and hold the thin solidified shell generated in the mold from the outer peripheral side against the static pressure of the molten metal inside. At the same time, it has the role of pulling out by driving rotation.
連続鋳造において、鋳片の偏析等を抑制するため、凝固
殻の外部に設けたりアクタにより、内部の溶湯を電磁撹
拌することが多く、この場合ガイドロールに要求される
特性は、
（１）強度が十分であること。In continuous casting, in order to suppress the segregation of slabs, the molten metal inside is often stirred electromagnetically using an actor installed outside the solidified shell.In this case, the characteristics required of the guide roll are: (1) Strength be sufficient.
（２） 高温冷却の繰返しによりヒートクランクのな
いこと。(2) No heat crank caused by repeated high-temperature cooling.
（３）溶接補修が可能であること。(3) It must be possible to repair by welding.
の他に、非磁性であることが望ましい。In addition, it is desirable that it be non-magnetic.
従来、これら電磁撹拌する場合のガイドロールは、上記
要求特性から５ＵＳ３０４等のオーステナイト系ステン
レス鋼、マンガン鋼（オーステナイト系）が使用されて
いた。Conventionally, guide rolls for electromagnetic stirring have been made of austenitic stainless steel such as 5US304 or manganese steel (austenitic) due to the above-mentioned required characteristics.
近年、耐摩耗性等高強度の要求から鉄基系耐熱鋼Ａ２８
６が使われ、曲り発生が少なく、従来材に比べて長寿命
と好評である。しかしながらＡ２８６でも室温硬さがＨ
ＲＣ３３程度と低く、使用中にロール表面が摩耗し廃却
となる。In recent years, iron-based heat-resistant steel A28 has been developed due to the demand for high strength such as wear resistance.
6 is used, and is popular for its less bending and longer life than conventional materials. However, even with A286, the room temperature hardness is H
It has a low RC of about 33, and the roll surface wears out during use, resulting in scrapping.
本発明は、特に耐摩耗性を向上し、長寿命化したガイド
ロールを提供することを目的とする。It is an object of the present invention to provide a guide roll with particularly improved wear resistance and a longer life.
本発明は、母材の胴部円周面に、粉末肉盛り溶接法によ
るＦｅ基、Ｎｉ基もしくはＣｏ基超超耐熱合金または、
これらの合金からなる基地に硬質粒子を分散保持させた
肉盛り層を設けたことを特徴とする連続鋳造用ガイドロ
ールである。そして、電磁撹拌装置を有する設備の場合
、母材をオーステナイト系合金鋼、肉盛り層を非磁性材
とするものである。The present invention provides an Fe-based, Ni-based, or Co-based super super heat-resistant alloy, or
This guide roll for continuous casting is characterized in that a base made of these alloys is provided with a built-up layer in which hard particles are dispersed and held. In the case of equipment having an electromagnetic stirring device, the base material is made of austenitic alloy steel and the build-up layer is made of a non-magnetic material.
本発明のガイドロールは、胴部円周面に粉体を原料とし
これを溶融してなる粉体肉盛り溶接層を有する。The guide roll of the present invention has a powder build-up welding layer formed by melting powder as a raw material on the circumferential surface of the body.
一般に高温強度が高い材料は、変形能が低くなる傾向が
あり、このため、塑性加工によって溶接棒、リボン等に
加工することが困難または不可能となることがある。こ
の場合鋳造により溶接棒とすることが、この場合非常に
高価となる。これに対し、これらの材料を粉末化するこ
とは、変形能に関係なく製造可能である。比較的に安価
に製造することができる。In general, materials with high high temperature strength tend to have low deformability, which may make it difficult or impossible to process them into welding rods, ribbons, etc. by plastic working. In this case, casting the welding rod into a welding rod is very expensive. In contrast, powdering these materials can be manufactured regardless of their deformability. It can be manufactured relatively inexpensively.
また、粉体肉盛り溶接法は、二種以上の異なる粉末を用
い、これらを混合しつつ肉盛り溶接することが容易であ
り、炭化物等の硬質粒子を肉盛り層内に分散させ、耐摩
耗性をさらに向上することが容易であり、またロール等
比較的単純な形状の物品に対しては、容易に自動化する
ことができる。In addition, the powder overlay welding method uses two or more different powders, and it is easy to mix them while overlay welding.Hard particles such as carbides are dispersed in the overlay layer, making it resistant to wear. It is easy to further improve the performance, and it can be easily automated for relatively simple shaped articles such as rolls.
表１に本発明を実施した母材と肉盛り材付質との組合せ
の例、ならびに母材および肉盛り層の硬さの測定例を示
す。Table 1 shows examples of combinations of the base material and built-up material properties according to the present invention, and examples of measuring the hardness of the base material and built-up layer.
また、表２に使用した各合金の組成を示す。Further, Table 2 shows the composition of each alloy used.
ここで、テスト階２は硬質粒子粉末として、平均粒径２
０μｍのＷＣ粉末を２０Ｖｏβ％配合したものである。Here, test floor 2 is a hard particle powder with an average particle size of 2
It contains 20 Voβ% of 0 μm WC powder.
テスト階１〜階４はいずれも２層盛りで約３ｍの厚さと
し、これを研削仕上げにより約２龍厚さとした。そして
その過程で、割れ、曲り等の発生はなく、それぞれ順調
に加工することができた。Test floors 1 to 4 were all two-layered and had a thickness of about 3 meters, and were ground to a thickness of about 2 meters. During the process, there were no cracks or bends, and the processing went smoothly.
表１のうちテスト＋’ｈｉおよび４は、いずれも現在電
磁撹拌装置付きの連続鋳造設備に組み込で使用中であり
、割れ、曲り、異常摩耗等の発生の報告はなく、摩耗量
測定はまだなされてないが、従来のＡ２８６一体製ガイ
ドロールに比し、明らかに低摩耗量であることが判明し
ている。Tests +'hi and 4 in Table 1 are currently being used in continuous casting equipment equipped with an electromagnetic stirring device, and there have been no reports of cracks, bends, abnormal wear, etc., and wear measurements have not been performed. Although it has not been tested yet, it has been found that the amount of wear is clearly lower than that of the conventional A286 integrated guide roll.
本発明によれば、従来不十分であった強度、耐摩耗性が
解決され、且つ長期間使用後摩耗した場合、摩耗部を肉
盛り溶接し、再度使用可能となり、原単位を下げる効果
がある。According to the present invention, the conventionally insufficient strength and abrasion resistance are solved, and if the product wears out after long-term use, the worn part can be overlaid and welded, making it possible to use it again, which has the effect of lowering the unit consumption. .
第１図は本発明に係るガイドロールの一実施例を示す形
状図、第２図は本発明による断面図を示す。FIG. 1 is a shape diagram showing an embodiment of a guide roll according to the present invention, and FIG. 2 is a cross-sectional view according to the present invention.
Claims (1)
しつつ引き抜くガイドロールにおいて、母材の胴部円周
面に、粉体肉盛り法によるＦｅ基、Ｎｉ基もしくはＣｏ
基の超耐熱合金またはこれらの合金からなる基地に硬質
粒子を分散保持した肉盛り層を設けたことを特徴とする
連続鋳造用ガイドロール。 ２、母材はオーステナイト系合金鋼、肉盛り層は非磁性
材であり、電磁撹拌装置を有する設備に用いることを特
徴とする特許請求の範囲第１項記載の連続鋳造用ガイド
ロール。[Claims] 1. In a guide roll that pulls out a slab in the process of solidification from a mold of continuous casting equipment while holding it under pressure, the circumferential surface of the body of the base material is coated with Fe-based and Ni group or Co
A guide roll for continuous casting, characterized in that a base made of a super heat-resistant alloy or an alloy thereof is provided with a built-up layer in which hard particles are dispersed and retained. 2. The guide roll for continuous casting according to claim 1, wherein the base material is austenitic alloy steel, the build-up layer is a non-magnetic material, and is used in equipment having an electromagnetic stirring device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4930786A JPS62207549A (en) | 1986-03-06 | 1986-03-06 | Guide roll for continuous casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4930786A JPS62207549A (en) | 1986-03-06 | 1986-03-06 | Guide roll for continuous casting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62207549A true JPS62207549A (en) | 1987-09-11 |
Family
ID=12827287
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4930786A Pending JPS62207549A (en) | 1986-03-06 | 1986-03-06 | Guide roll for continuous casting |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62207549A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007101512A1 (en) | 2006-03-09 | 2007-09-13 | Sms Demag Ag | Roll for metal processing, in particular a continuous casting roll, and method of producing such a roll |
| CN102211157A (en) * | 2011-04-06 | 2011-10-12 | 肖跃英 | Free roller for continuously casting plate blanks |
-
1986
- 1986-03-06 JP JP4930786A patent/JPS62207549A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007101512A1 (en) | 2006-03-09 | 2007-09-13 | Sms Demag Ag | Roll for metal processing, in particular a continuous casting roll, and method of producing such a roll |
| DE102006011384B4 (en) | 2006-03-09 | 2019-09-05 | Sms Group Gmbh | Roll for metalworking, in particular continuous casting roll |
| CN102211157A (en) * | 2011-04-06 | 2011-10-12 | 肖跃英 | Free roller for continuously casting plate blanks |
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