JPH03291144A - Nozzle for producing rapidly cooled metal strip - Google Patents
Nozzle for producing rapidly cooled metal stripInfo
- Publication number
- JPH03291144A JPH03291144A JP2092473A JP9247390A JPH03291144A JP H03291144 A JPH03291144 A JP H03291144A JP 2092473 A JP2092473 A JP 2092473A JP 9247390 A JP9247390 A JP 9247390A JP H03291144 A JPH03291144 A JP H03291144A
- Authority
- JP
- Japan
- Prior art keywords
- nozzle
- ceramic
- molten metal
- metal
- rapidly cooled
- 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.)
- Granted
Links
- 239000002184 metal Substances 0.000 title claims abstract description 24
- 239000000919 ceramic Substances 0.000 claims abstract description 27
- 238000004519 manufacturing process Methods 0.000 claims abstract description 6
- 238000001816 cooling Methods 0.000 claims abstract description 5
- 238000005260 corrosion Methods 0.000 claims description 8
- 230000007797 corrosion Effects 0.000 claims description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 7
- 229910052799 carbon Inorganic materials 0.000 claims description 7
- 238000000034 method Methods 0.000 abstract description 6
- 230000003628 erosive effect Effects 0.000 abstract 1
- 239000000463 material Substances 0.000 description 8
- 238000003754 machining Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 238000010791 quenching Methods 0.000 description 3
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000003672 processing method Methods 0.000 description 2
- 230000000171 quenching effect Effects 0.000 description 2
- 229910005091 Si3N Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910007948 ZrB2 Inorganic materials 0.000 description 1
- 239000006061 abrasive grain Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- VWZIXVXBCBBRGP-UHFFFAOYSA-N boron;zirconium Chemical compound B#[Zr]#B VWZIXVXBCBBRGP-UHFFFAOYSA-N 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000011812 mixed powder Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Compositions Of Oxide Ceramics (AREA)
- Continuous Casting (AREA)
- Ceramic Products (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、溶融金属を移動冷却体表面に連続的に供給す
ることによって金属薄帯を製造する際に使用する溶融金
属噴出ノズルに関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a molten metal jet nozzle for use in producing metal ribbon by continuously supplying molten metal to the surface of a moving cooling body.
溶融金属を連続的に移動冷却体として冷却ロール表面上
に噴出流下せしめて３０〜２００μｍ厚の結晶質金属薄
帯を形成すること自体は、本願の出願前から広く知られ
ている。The method of forming a crystalline metal ribbon with a thickness of 30 to 200 μm by continuously jetting molten metal as a moving cooling body onto the surface of a cooling roll has been widely known even before the filing of this application.
とくに、このロール急冷法において使用する溶融金属噴
出用のノズルとして、ノズルリップの孔の形状を急冷ロ
ールの回転方向に対して１０〜８０度の角度を持つ複数
の開口部を形成したものが特開昭６３−２２０９５０号
公報に開示されている。In particular, as a nozzle for spouting molten metal used in this roll quenching method, a nozzle lip having a hole shape with a plurality of openings having an angle of 10 to 80 degrees with respect to the rotational direction of the quench roll is particularly suitable. It is disclosed in JP-A No. 63-220950.
この種の溶融金属噴出用のノズルは、ノズルリップの孔
を単なるスリット状の開口としたノズルと比較して、形
成された薄帯金属の厚みを均一にでき、且つ広巾の薄帯
状金属の製造に好適に適用できるという効果がある。This type of nozzle for spouting molten metal can make the thickness of the formed metal ribbon more uniform, and can produce a wider metal ribbon, compared to a nozzle in which the hole in the nozzle lip is simply a slit-shaped opening. It has the effect that it can be suitably applied to.
一方、このノズルを形成する材料として要求される特性
としては、噴出金属に対しての耐食性があり、そのうえ
、耐摩耗性、機械的強度においても優れていることであ
り、この使用上の要求特性からは、Ａ Ｉ２０ｓ、
Ｚｒ ０２． Ｚｒ Ｂｔ、 Ｓ’ｓ Ｎａ＋５ｉ
Ａｉ’ＯＮ等の耐食性に優れたセラミックスの使用が望
まれる。On the other hand, the characteristics required for the material forming this nozzle include corrosion resistance against ejected metal, as well as excellent abrasion resistance and mechanical strength. From A I20s,
Zr 02. Zr Bt, S's Na+5i
It is desirable to use ceramics with excellent corrosion resistance such as Ai'ON.
そして、かかるセラミックス類のノズルのリップ孔の加
工にはその精度を維持する上から超音波加工のような精
密加工法が適用される。Precision machining methods such as ultrasonic machining are applied to machining the lip holes of such ceramic nozzles in order to maintain the accuracy.
ところが、このような精密加工法を上記のセラミックス
に適用する場合には、セラミックスの強度がＨｖ １５
００ｋｇ／ｍｍ’以上なので材料自体が脆く、ノズル孔
の横巾縁部に亀裂が生じ易く、その戒品歩留まりは極端
に低く、このことから、従来の機械的な精密加工法の適
用は実際上不可能である。However, when applying such a precision processing method to the above ceramics, the strength of the ceramics is Hv 15
00 kg/mm' or more, the material itself is brittle and cracks are likely to occur at the width edge of the nozzle hole, and the yield of products is extremely low.For this reason, it is practically impossible to apply conventional mechanical precision processing methods. It's impossible.
本発明において解決すべき課題は、セラミックス類の急
冷金属薄帯製造用ノズルのリップ孔形成に際しての問題
を解決することにあって、セラミックス製ノズルの或品
歩留まりの向上を図るものである。The problem to be solved by the present invention is to solve the problem in forming a lip hole in a nozzle for producing rapidly cooled metal ribbon of ceramics, and to improve the yield of a certain product of ceramic nozzles.
〔課題を解決するための手段〕
本発明は、急冷法による金属薄帯の製造に使用するノズ
ルをセラミックスから懲戒するに際して、同セラミック
スの硬さをＨν１２００ｋｇ／ｍ−以下に調整すること
を特徴とする。[Means for Solving the Problems] The present invention is characterized by adjusting the hardness of the ceramic to Hv1200 kg/m or less when the nozzle used for manufacturing a metal ribbon by the quenching method is made of ceramic. do.
本発明は、上記セラミックス製ノズルの製造に当たって
の超音波加工のような精密加工法によるノズル孔の形成
の際の亀裂や割れの防止は、セラミックスの硬さをＨｖ
］、２００ｋｇ＃ｎｍ２以下に調整することによって
達成できるという知見に基づいて完成したものである。The present invention aims to prevent cracks and fractures during the formation of nozzle holes by precision machining methods such as ultrasonic machining in manufacturing the ceramic nozzle.
], was completed based on the knowledge that this can be achieved by adjusting the weight to 200 kg#nm2 or less.
上記セラミックスの硬さをＨｖ １２００ｋｇ／ｎ＋ｍ
２以下まで低下せしめる具体的な手段、とくにＡｌｔｏ
−。The hardness of the above ceramics is Hv 1200kg/n+m
Concrete means to reduce the temperature to 2 or less, especially Alto
−.
ＺｒＯ２，ＺｒＢ２． Ｓｉ３Ｎ＋、 Ｓ ｉ Ａ
ｊ！ＯＮ等のセラミックス基材に対する硬さ低下の手段
としては、マシナブルセラミックスの代表であるＢＮあ
るいはカーボン等を基材に対して５〜５０重量％添加配
合することが、溶融金属に対する耐食性を維持しつつ精
密機械加工性を向上させる点から特に望ましい。ZrO2, ZrB2. Si3N+, SiA
j! As a means of reducing the hardness of ceramic base materials such as ON, adding 5 to 50% by weight of BN or carbon, which are representative of machinable ceramics, to the base material maintains corrosion resistance against molten metal. This is especially desirable from the standpoint of improving precision machinability.
セラミックスの硬さをＨＶ １２００ｋｇ／ｍｍ’以下
に維持することによって超音波加工法等の精密加工の際
の亀裂や割れ等の発生を防止して、或品歩留まりを向上
することができる。しかも、セラミックス基材自体が有
する耐食性、機械的性質に悪影響を与えることなく、ノ
ズル寿命を短くすることがない。By maintaining the hardness of the ceramic at HV 1200 kg/mm' or less, it is possible to prevent the occurrence of cracks and fractures during precision processing such as ultrasonic processing, and improve the yield of certain products. Furthermore, the corrosion resistance and mechanical properties of the ceramic base material itself are not adversely affected, and the life of the nozzle is not shortened.
セラミックス配合粉末として、Ｓ Ｌ ３ Ｎ ４ （
粒径１，０μｍ）、ＢＮ（粒径０．５μｍ）に焼結助剤
として３重量％のＭｇＯを配合した混合粉末を静水圧プ
レスによって底形し、窒素の雰囲気下で１７５０℃に加
熱焼結して、縦２０ｍｍ、 横２００ｍｍ 、 高
さ２５ｆｆＩｍの寸法の調整試料を作成した。これらの
調整試料の硬度（Ｈｖ）とＢＮ配合量（重量％）の関係
を第１図に示す。図中・印が調整試料の硬度を示し、Ｂ
Ｎ配合量の増加とともに硬度が低下するのがわかる。As a ceramic compound powder, S L 3 N 4 (
A mixed powder containing BN (particle size 0.5 μm) and 3% by weight of MgO as a sintering aid was shaped using a hydrostatic press, and heated and sintered at 1750°C in a nitrogen atmosphere. Thus, an adjusted sample with dimensions of 20 mm in length, 200 mm in width, and 25 ffIm in height was prepared. The relationship between the hardness (Hv) and the BN content (wt%) of these prepared samples is shown in FIG. In the figure, the mark indicates the hardness of the prepared sample, B
It can be seen that the hardness decreases as the N content increases.
これらの試料片を、加工圧１．２ｋｇ、共振周波数１６
ｋＨｚ、砥粒＄３２０５ ｉ Ｃ（加工液循環装置で供
給）の条件で第２図に示すノズル孔形状に加工した。These sample pieces were processed at a processing pressure of 1.2 kg and a resonance frequency of 16
It was processed into the nozzle hole shape shown in FIG. 2 under the conditions of kHz, abrasive grains of $3205 i C (supplied by a processing fluid circulation device).
第２図（ａ）はノズルの平面図、同図（ｂ）は同図（ａ
）のＴ−Ｉ線矢視断面図、同図（Ｃ）は同図（ａ）の■
−■線矢視断面図、同図（イ）は同図（ａ）の−点鎖線
で示す部分のノズル孔Ａ１〜Ａ、、の拡大図である。Fig. 2(a) is a plan view of the nozzle, and Fig. 2(b) is a plan view of the nozzle.
) is a sectional view taken along the line T-I, and (C) is a cross-sectional view of (A) in the same figure.
- A cross-sectional view taken along the line ■, and (A) is an enlarged view of the nozzle holes A1 to A in the portion indicated by the - dotted chain line in Fig. (A).
第２図に示すようなノズル孔形状の孔を深さ５ｍｍ加工
するのに必要な時間と調整試料のＢＮ配合量の関係を同
様に第１図に示す。図中○印が加工時間を示し、ＢＮ配
合量が５重量％未渦のものは、工具の摩耗が大きく、加
工できなかったり、試料に亀裂１割れ等が発生した。ま
た、ＢＮ配合量が５０重量％より大きい試料については
、鋳造時の耐食性、耐摩耗性等の問題があり、耐用性に
問題があった。Similarly, FIG. 1 shows the relationship between the time required to machine a hole having the nozzle shape as shown in FIG. 2 to a depth of 5 mm and the BN content of the prepared sample. In the figure, the mark ○ indicates the machining time, and when the BN content was 5% by weight without whirlpool, the tool was so worn that it could not be machined or one crack occurred in the sample. In addition, samples with a BN content of more than 50% by weight had problems with corrosion resistance, abrasion resistance, etc. during casting, and had problems with durability.
また、その他の材料系であるＡ１２０ＣＬ Ｚｒ０ａ
ＺｒＢ２，５ｉＡｊ！ＯＮについて同様な調査を実施し
た結果を第１表に示す。In addition, other materials such as A120CL Zr0a
ZrB2,5iAj! Table 1 shows the results of a similar investigation regarding ON.
同表において、加工性欄の○は超音波加工が良好な例、
Ｘは工具の摩耗が大きいかあるいは試料に亀裂が生じた
例を示す。また、耐用性欄または判定欄の○は実用に供
し得るもの、×は実用に供し得ないものを示し、−は超
音波加工による底形ができず耐用性試験ができなかった
例を示す。In the same table, ○ in the workability column indicates an example where ultrasonic processing is good.
X indicates an example in which the tool is heavily worn or the sample is cracked. Further, in the durability column or judgment column, ○ indicates that it can be put to practical use, × indicates that it cannot be put to practical use, and - indicates that the durability test could not be performed because the bottom shape could not be formed by ultrasonic processing.
第１表から明らかなように、各種セラミックス基材にＢ
Ｎあるいはカーボンを１種類以上、５〜５０重量％配合
した焼結体は、超音波加工に適した硬度を有しており、
これを超音波加工に適用したとき、短時間の加工時間で
亀裂１割れ等の発生のない成品とすることができた。ま
た、ＢＮあるいはカーボンの配合量を５０重量％以下に
することにより、セラミック基材自体が有する耐用性等
に悪影響を与えることがない。一方、各種セラミックス
基材にＢＮあるいはカーボンの１種類以上を５重量％未
満配合した焼結体及び５０重量％超を配合した焼結体は
、第１表に示すように、超音波加工性または耐用性に問
題があり、実用に供し得ないものである。As is clear from Table 1, B
A sintered body containing 5 to 50% by weight of one or more types of N or carbon has a hardness suitable for ultrasonic processing.
When this was applied to ultrasonic processing, it was possible to produce a product without any cracks or the like in a short processing time. Further, by controlling the blending amount of BN or carbon to 50% by weight or less, the durability of the ceramic base material itself is not adversely affected. On the other hand, as shown in Table 1, sintered bodies in which less than 5% by weight of one or more types of BN or carbon and more than 50% by weight of one or more types of BN or carbon are blended into various ceramic base materials have excellent ultrasonic processability or There are problems with durability and it cannot be put to practical use.
本発明によって以下の効果を奏することができる。 The following effects can be achieved by the present invention.
（１） ノズル自体がセラミックス製であっても、正
確に且つ高い効率でノズル孔を形成できる。(1) Even if the nozzle itself is made of ceramics, the nozzle hole can be formed accurately and with high efficiency.
（２） ノズル自体を高耐食性、高耐摩耗性、高強度
のセラミックスで作成できるので、耐用性を延ばすこと
ができる。(2) Since the nozzle itself can be made of highly corrosion-resistant, highly wear-resistant, and high-strength ceramics, its durability can be extended.
（３３Ｂ Ｎあるいはカーボンは熱伝導率が良く、ノズ
ル自体の耐スポール性向上を図ることができる。(33BN or carbon has good thermal conductivity and can improve the spall resistance of the nozzle itself.
第１図は超音波加工性及び硬度に及ぼすＢＮ含有量の影
響を示す図であり、第２図は本発明を適用できるノズル
のリップ孔の成形鋼を示す図である。
Ａ、〜Ａ、、：ノズル孔FIG. 1 is a diagram showing the influence of BN content on ultrasonic machinability and hardness, and FIG. 2 is a diagram showing a formed steel for the lip hole of a nozzle to which the present invention can be applied. A, ~A,,: Nozzle hole
Claims (2)
する際に使用する金属溶湯噴出用ノズルであって、硬さ
がＨｖ１２００ｋｇ／ｍｍ＾２以下の範囲にあるセラミ
ックスから形成した急冷金属薄帯製造用ノズル。1. A molten metal spouting nozzle used when manufacturing a metal ribbon by spouting molten metal onto a moving cooling body, the quenched metal thin metal formed from ceramic having a hardness of Hv1200kg/mm^2 or less. Nozzle for band production.
ラミックスにＢＮあるいはカーボンの１種類以上を５〜
５０重量％配合せしめてなる急冷金属薄帯製造用ノズル
。2. In the description of claim 1, the ceramic is a corrosion-resistant ceramic containing at least one type of BN or carbon in 5 to 50% of the corrosion-resistant ceramic.
A nozzle for producing rapidly cooled metal ribbon containing 50% by weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2092473A JP2943992B2 (en) | 1990-04-07 | 1990-04-07 | Nozzle for manufacturing quenched metal ribbon |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2092473A JP2943992B2 (en) | 1990-04-07 | 1990-04-07 | Nozzle for manufacturing quenched metal ribbon |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03291144A true JPH03291144A (en) | 1991-12-20 |
| JP2943992B2 JP2943992B2 (en) | 1999-08-30 |
Family
ID=14055289
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2092473A Expired - Lifetime JP2943992B2 (en) | 1990-04-07 | 1990-04-07 | Nozzle for manufacturing quenched metal ribbon |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2943992B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1992019399A1 (en) * | 1991-04-27 | 1992-11-12 | Foseco International Limited | Insert for vessels or conduits containing molten metal |
| WO1998001405A1 (en) * | 1996-07-05 | 1998-01-15 | Foseco International Limited | Ceramic compositions |
| JP2011168832A (en) * | 2010-02-18 | 2011-09-01 | Nippon Steel Corp | Immersion member for hot-dip metal bath, method for producing immersion member for hot-dip metal bath, hot-dip metal plating apparatus and method for manufacturing hot-dip metal plated steel sheet |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102171091B1 (en) * | 2018-11-05 | 2020-10-28 | 주식회사 포스코 | Manufacturing apparatus for metal material and method thereof |
-
1990
- 1990-04-07 JP JP2092473A patent/JP2943992B2/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1992019399A1 (en) * | 1991-04-27 | 1992-11-12 | Foseco International Limited | Insert for vessels or conduits containing molten metal |
| WO1998001405A1 (en) * | 1996-07-05 | 1998-01-15 | Foseco International Limited | Ceramic compositions |
| AU732774B2 (en) * | 1996-07-05 | 2001-04-26 | Foseco International Limited | Ceramic compositions |
| JP2011168832A (en) * | 2010-02-18 | 2011-09-01 | Nippon Steel Corp | Immersion member for hot-dip metal bath, method for producing immersion member for hot-dip metal bath, hot-dip metal plating apparatus and method for manufacturing hot-dip metal plated steel sheet |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2943992B2 (en) | 1999-08-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110344056B (en) | Process for preparing cladding layer on surface of copper matrix by high-speed laser cladding technology | |
| US5041173A (en) | Lapping tools | |
| CN100451158C (en) | Die steel | |
| CN1082950A (en) | Composite roll and its production method | |
| CN112760561B (en) | Wire rod for hand tool and preparation method thereof | |
| EP3719161A1 (en) | High-strength high-toughness and wear-resistant composite steel plate and manufacturing method therefor | |
| US20060213127A1 (en) | Method for toughening surface of sinterred material cutting tool and sintered material cutting tool having long life | |
| CN113579248B (en) | Process method and equipment for preparing M2 high-speed steel by electron beam melting | |
| JPH03291144A (en) | Nozzle for producing rapidly cooled metal strip | |
| CN108842041A (en) | A kind of multi-layer wear-resistant ball and preparation method thereof can be used for grinding strong oxidizing property material | |
| CN109183025B (en) | Wear-resisting Cr8Mo2SiV steel part and preparation method and be used for Cr8Mo2The Ni based wear-resistant alloy powder of SiV steel | |
| US6200394B1 (en) | High speed tool steel | |
| KR100530043B1 (en) | Mill roll and method for manufacturing the roll | |
| EP0467857B1 (en) | Powder metallurgy tool steel | |
| CN112301345A (en) | Laser cladding alloy powder for cast steel roller and laser cladding method thereof | |
| JPH04254543A (en) | Cobalt-base alloy having corrosion resistance and wear resistance | |
| JP2001214238A (en) | Powder hot tool steel excellent in heat crack resistance and wear resistance and hot die | |
| CN108149147A (en) | A kind of high abrasion gear | |
| JP2006089823A (en) | Die made of high-speed tool steel | |
| KR102010052B1 (en) | Medium carbon free cutting steel having excellent hot workability and method for manufacturing the same | |
| CN116037957B (en) | Method for adding materials to cutting pick through laser cladding | |
| KR100299463B1 (en) | A method of manufacturing cold work tool steel with superior toughness and wear resistance | |
| CN117867489A (en) | Laser processing method for prolonging service life of magnesia carbon brick mold by using alloy powder | |
| KR100376495B1 (en) | A method of manufacturing Co-free having superior wear resistance high speed steels | |
| KR100321062B1 (en) | Process for manufacturing tool steel with superior abrasion resistance for cold working |