JPH09216047A - Manufacture of complex plate material - Google Patents
Manufacture of complex plate materialInfo
- Publication number
- JPH09216047A JPH09216047A JP2360296A JP2360296A JPH09216047A JP H09216047 A JPH09216047 A JP H09216047A JP 2360296 A JP2360296 A JP 2360296A JP 2360296 A JP2360296 A JP 2360296A JP H09216047 A JPH09216047 A JP H09216047A
- Authority
- JP
- Japan
- Prior art keywords
- metal
- layer metal
- cast
- plate material
- composite plate
- 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
Landscapes
- Metal Rolling (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、両面側の特性の異
なる複合板材の製造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a composite board having different characteristics on both sides.
【０００２】[0002]
【従来の技術】従来、表面に耐磨耗性を備えた板材を形
成するのには、基材となるべき板上に例えばステライト
等の硬質金属を溶接肉盛りすることが一般に行われてい
る。これは、例えば、ステライトについて言えば、非常
に硬度が高いために、耐磨耗性材料としては優れている
ものの、加工性に欠け、ステライト板を製造することが
非常に困難であるからであり、さらに、こうした硬質金
属面を有する材料の接合、固定等が極めて困難であるこ
とから、その材料の接合、固定を可能にするために、加
工性を有する基材上にステライト層を設けることが行わ
れているのである。この方法においては、肉盛溶接はス
テライト等の硬質金属の溶接棒を用いて例えば圧延炭素
鋼板上に溶接するので、１パスで肉盛りできる幅は狭
く、溶接速度も溶着部に割れが発生し易いという溶着金
属の特性上早くは出来ず、溶着量は数十kg/h程度であっ
た。さらに、長い溶接線を一時に溶接肉盛りすることが
困難で、例えば長い二層複合板を製造するには、前記肉
盛溶接した二層複合板をさらに溶接によって接合して長
くすることが行われている。また、表面に耐食性を備え
た板材としては、一般にクラッド材が使用されている。
このクラッドを製造するのには、基材を構成する板材と
表面層を形成する耐食性の板材とを重ね合わせて圧延す
ることが多く行われている。2. Description of the Related Art Conventionally, in order to form a plate material having abrasion resistance on the surface thereof, it is general practice to weld a hard metal such as stellite onto a plate to be a base material by welding. . This is because, for example, with respect to stellite, it is excellent in abrasion resistance because of its extremely high hardness, but it lacks workability and it is very difficult to manufacture stellite plates. Furthermore, since it is extremely difficult to join and fix such a material having a hard metal surface, it is necessary to provide a stellite layer on a workable substrate in order to enable joining and fixing of the material. It is being done. In this method, since the overlay welding is performed on a rolled carbon steel plate, for example, by using a welding rod made of hard metal such as stellite, the width that can be overlaid in one pass is narrow, and the welding speed also causes cracks in the welded portion. Due to the characteristics of the deposited metal being easy, it could not be done early, and the deposition rate was about several tens kg / h. Furthermore, it is difficult to build up a long weld line at one time by welding, and for example, in order to manufacture a long two-layer composite plate, it is necessary to further weld the above-mentioned two-layer composite plate by welding to make it longer. It is being appreciated. A clad material is generally used as a plate material having corrosion resistance on the surface.
In order to manufacture this clad, a plate material constituting a base material and a corrosion-resistant plate material forming a surface layer are often overlaid and rolled.
【０００３】[0003]
【発明が解決しようとする課題】従って、上記従来の耐
磨耗性を有する複合板材を製造するに際しては、溶接性
の良くない溶接棒を用いて肉盛りするので、多大の手間
と時間を要し、生産性は極めて低く、経済性の悪いもの
であった。さらに、上記のような耐磨耗性の溶着金属は
クレータ割れを発生しやすく、肉盛ビードの継ぎ足しが
困難で、そのため溶接線長には限界があり、大きな肉盛
溶接した二層複合板材を製造するのは困難であった。し
かも、肉盛層の硬さを維持しつつ割れを防止するには、
高度の技術と熟練を要し、必然的に高価なものにならざ
るを得ないという問題を有していた。さらに、溶接肉盛
りビードを均一に形成することは困難であり、また、溶
接欠陥を内在する可能性があるという問題もあり、高硬
度面の平滑度を必要とする場合には、研削加工による他
なく、これも多大の手間と時間を要するという問題もあ
る。一方、耐食性クラッド材を圧延形成するには非常に
大きな設備を必要とし、設備コストが高く、従って、製
品コストを低減するにも限界があるという問題があっ
た。さらに、クラッド材が圧接により形成されることか
ら、クラッド材の接合部には接合不良部を内在し易く、
接合境界に材料欠陥を全く有しない二層複合板材を得よ
うとすれば歩留りが低下するという問題もあった。そこ
で、本発明の目的は、上記の問題点を解決し、内在材料
欠陥の生成を抑制しつつ、安価に、且つ、簡便に、一方
の面に、他方の面と異なる、例えば耐磨耗性、耐食性等
の特性を付与して一体形成した複合板材の製造方法を提
供するところにある。Therefore, when manufacturing the above-mentioned conventional composite plate material having abrasion resistance, since welding is performed using a welding rod having poor weldability, a great deal of labor and time is required. However, the productivity was extremely low and the economy was poor. Furthermore, the above-mentioned wear-resistant weld metal is apt to cause crater cracking, and it is difficult to add build-up beads.Therefore, there is a limit to the welding line length, and a large build-up welded two-layer composite plate material is used. It was difficult to manufacture. Moreover, to prevent cracking while maintaining the hardness of the overlay,
It had a problem that it required a high level of skill and skill and was inevitably expensive. Further, it is difficult to uniformly form a weld overlay bead, and there is also a problem that welding defects may be present internally. If smoothness of a high hardness surface is required, grinding Nonetheless, this also has a problem that it requires a lot of trouble and time. On the other hand, there is a problem that a very large facility is required to roll-form the corrosion-resistant clad material, and the facility cost is high, and thus there is a limit to reducing the product cost. Further, since the clad material is formed by pressure welding, it is easy to have a defective joint portion in the joint portion of the clad material,
There was also a problem that the yield would be reduced if a two-layer composite sheet material having no material defects at the joining boundary was to be obtained. Therefore, an object of the present invention is to solve the above problems, to suppress the generation of defects in the internal material, at low cost, and easily, one surface is different from the other surface, for example, abrasion resistance. Another object of the present invention is to provide a method for manufacturing a composite plate material which is integrally formed with properties such as corrosion resistance.
【０００４】[0004]
〔第１特徴構成〕上記の目的のための本発明の複合板材
の製造方法の第１特徴構成は、遠心力鋳造によって筒状
の金型内に外層金属として第１金属溶湯を鋳込み、前記
鋳込んだ外層金属の凝固後に、内層金属として前記第１
金属溶湯とは異なった第２金属溶湯材を前記外層金属の
内表面上に鋳込んで二層金属管を形成し、前記二層金属
管を金型から取出した後、その管の周方向に複数箇所を
切断して複合板材を形成する（請求項１に対応）点にあ
る。 〔第１特徴構成の作用効果〕従って、上記第１特徴構成
によれば、遠心力鋳造によって内外層の材質の異なる二
層金属管を形成すれば、容易に二層金属を形成でき、第
１金属、第２金属の何れか一方を、形成する二層金属に
特性を持たせる金属とし、他方を基材として、これを前
記二層金属管の周方向に切断分割することによって、一
方の面に特性を有する、基材によって支持されたほぼ平
板に近い二層板材を製造できる。従って、内外層の何れ
か一方を所望の特性の金属材料とし、他をその基材とし
て好ましい金属材料とすることによって、他方の面とは
異なる特性を一方の面に付与した板材を容易に製造でき
る。さらに、第１金属と第２金属とを同一の金型内で遠
心力鋳造して得られた二層金属管の内外層の間には、金
属組織的な連続性が維持され、境界部における内外層間
の剥離を生ずることが防止できる。その結果、例えば耐
磨耗性、耐食性等の他方の面とは異なる特性を一方の面
に付与し、且つ、他方の面の側の金属によって強度的に
支持された二層板材を、内在材料欠陥の生成を抑制しつ
つ安価に、且つ、簡便に製造出来るようになる。 〔第２特徴構成及び作用効果〕上記の目的のための本発
明の複合板材の製造方法の第２特徴構成は、上記第１特
徴構成における内層金属として、外層金属よりも融点の
低い金属を鋳込む（請求項２に対応）ようにすればよ
く、内層金属として、外層金属の融点よりも低い融点の
金属を鋳込むことによって、内層金属の外層金属内表面
への鋳込み時における溶け込みを防止でき、内外層の境
界層に鋳造欠陥が生ずること、及び、前記境界層の波打
ち等の乱れの発生を抑制できる。その結果、内在材料欠
陥の生成をより確実に抑制した二層板材を製造出来るよ
うになる。 〔第３特徴構成及び作用効果〕上記の目的のための本発
明の複合板材の製造方法の第３特徴構成は、上記第１又
は第２特徴構成における内層金属として、耐磨耗金属を
鋳込む（請求項３に対応）ようにすればなおよく、例え
ば、外層金属を基材として、炭素鋳鋼を鋳込み、内層金
属を特性を持たせる金属として、Ｎｉ合金鋳鋼を鋳込め
ば、鋳込み温度を外層の融点よりも低い温度で鋳込むこ
とが出来るので、内外層の境界層での欠陥の生成を抑制
でき、靱性を外層金属に持たせ、内層金属に耐磨耗性を
発揮させることが出来る。その結果、内在材料欠陥の生
成をより一層確実に抑制出来ると同時に、内層金属表面
に充分な耐磨耗性を有する二層板材を製造出来るように
なる。 〔第４特徴構成及び作用効果〕上記の目的のための本発
明の複合板材の製造方法の第４特徴構成は、上記第１又
は第２特徴構成における内層金属として、耐食性金属を
鋳込む（請求項４に対応）ようにすればなおよく、例え
ば、外層金属を基材として、炭素鋳鋼を鋳込み、内層金
属を特性を持たせる金属として、耐食鋳鋼を鋳込めば、
鋳込み温度を外層の融点よりも低い温度で鋳込むことが
出来るので、内外層の境界層での欠陥の生成を抑制で
き、靱性を外層金属に持たせ、内層金属に耐食性を発揮
させることが出来る。その結果、内在材料欠陥の生成を
より一層確実に抑制出来ると同時に、内層金属表面に充
分な耐食性を有する二層板材を製造出来るようになる。 〔第５特徴構成及び作用効果〕上記の目的のための本発
明の複合板材の製造方法の第５特徴構成は、上記第１乃
至第４特徴構成の何れかによって形成した複合材を塑性
加工して複合平板材を形成する（請求項５に対応）よう
にすればさらによく、例えば、外層金属として炭素鋳鋼
を鋳込み、耐食鋳鋼を内層金属として鋳込んで形成した
二層管を、その周方向に複数カ所で切断して帯状板材と
し、例えば圧延加工して平板化すれば、所望の特性を有
する二層平板を得ることが出来る。その結果、例えば内
層金属表面に充分な耐食性を有する二層複合平板材を製
造出来るようになる。[First Characteristic Configuration] The first characteristic configuration of the method for producing a composite plate material of the present invention for the above purpose is to cast a first molten metal as an outer layer metal into a cylindrical mold by centrifugal force casting, After the solidified outer layer metal is solidified, the first layer is used as the inner layer metal.
A second molten metal material different from the molten metal is cast on the inner surface of the outer layer metal to form a two-layer metal pipe, and the two-layer metal pipe is taken out of the mold and then placed in the circumferential direction of the pipe. The point is to cut a plurality of locations to form a composite plate material (corresponding to claim 1). [Advantageous Effects of First Characteristic Configuration] Therefore, according to the first characteristic structure, a double-layer metal pipe can be easily formed by forming a double-layer metal pipe having different inner and outer layers by centrifugal casting. Either one of the metal and the second metal is used as a metal that gives characteristics to the two-layer metal to be formed, and the other is used as a base material, which is cut and divided in the circumferential direction of the two-layer metal pipe to obtain one surface. It is possible to manufacture a two-layer plate material having substantially the characteristics described above and which is supported by a base material and is almost flat. Therefore, by using one of the inner and outer layers as a metal material having desired characteristics and the other as a preferable metal material for the base material, a plate material having one surface provided with characteristics different from the other surface can be easily manufactured. it can. Furthermore, the metallographic continuity is maintained between the inner and outer layers of the two-layer metal tube obtained by centrifugally casting the first metal and the second metal in the same mold, and It is possible to prevent peeling between the inner and outer layers. As a result, for example, a two-layer plate material that is provided with properties such as abrasion resistance and corrosion resistance different from the other surface on one surface, and that is strongly supported by the metal on the other surface side is used as an internal material. It becomes possible to manufacture inexpensively and easily while suppressing generation of defects. [Second Characteristic Configuration and Operation and Effect] The second characteristic configuration of the method for producing a composite plate material of the present invention for the above purpose is to cast a metal having a lower melting point than the outer layer metal as the inner layer metal in the first characteristic configuration. (Corresponding to claim 2), and by casting a metal having a melting point lower than that of the outer layer metal as the inner layer metal, it is possible to prevent the inner layer metal from melting at the time of casting on the inner surface of the outer layer metal. It is possible to suppress the occurrence of casting defects in the boundary layers of the inner and outer layers and the occurrence of turbulence such as waviness of the boundary layers. As a result, it becomes possible to manufacture the two-layer plate material in which the generation of the internal material defect is more surely suppressed. [Third Characteristic Configuration and Action and Effect] In the third characteristic configuration of the method for manufacturing a composite plate material of the present invention for the above purpose, a wear resistant metal is cast as the inner layer metal in the first or second characteristic configuration. (Corresponding to claim 3) Even better, for example, when the outer layer metal is used as a base material, carbon cast steel is cast, and the inner layer metal is given a characteristic metal, the Ni alloy cast steel is cast, and the casting temperature is set to the outer layer. Since the casting can be performed at a temperature lower than the melting point of, the generation of defects in the boundary layer between the inner and outer layers can be suppressed, the outer layer metal can have toughness, and the inner layer metal can exhibit wear resistance. As a result, it is possible to more reliably suppress the generation of defects in the internal material, and at the same time, it is possible to manufacture a two-layer plate material having sufficient wear resistance on the inner metal surface. [Fourth Characteristic Configuration and Action and Effect] In the fourth characteristic configuration of the method for manufacturing a composite plate material of the present invention for the above purpose, a corrosion resistant metal is cast as the inner layer metal in the first or second characteristic configuration (claim) (Corresponding to item 4), for example, if the outer layer metal is used as a base material, carbon cast steel is cast, and the inner layer metal is given a characteristic metal, corrosion-resistant cast steel is cast,
Since the casting temperature can be lower than the melting point of the outer layer, generation of defects in the boundary layer between the inner and outer layers can be suppressed, the outer layer metal can have toughness, and the inner layer metal can exhibit corrosion resistance. . As a result, it becomes possible to more reliably suppress the generation of defects in the internal material, and at the same time, it becomes possible to manufacture a two-layer plate material having sufficient corrosion resistance on the surface of the inner metal layer. [Fifth Characteristic Configuration and Action and Effect] The fifth characteristic configuration of the method for manufacturing a composite plate material of the present invention for the above purpose is to plastically process the composite material formed by any of the first to fourth characteristic configurations. It is more preferable to form a composite flat plate material (corresponding to claim 5) by, for example, a double-layer pipe formed by casting carbon cast steel as the outer layer metal and corrosion-resistant cast steel as the inner layer metal in the circumferential direction. If a strip-shaped plate material is obtained by cutting at a plurality of positions, and is then flattened by rolling, for example, a two-layer flat plate having desired characteristics can be obtained. As a result, for example, it becomes possible to manufacture a two-layer composite flat plate material having sufficient corrosion resistance on the inner layer metal surface.
【０００５】[0005]
【発明の実施の形態】上記本発明の複合板材の製造方法
の実施の形態の一例として、耐磨耗性の表面を形成した
複合平板材を製造する例について、以下に、図面を参照
しながら説明する。先ず、遠心鋳造によって、外層金属
２を形成するために、第１金属として炭素鋼(JIS SC 3
7) 相当材を、金型１の一端部側の鋳込口１６から鋳込
み、内層金属３を形成するために、二層複合板材に特性
を持たせる金属を第２金属として、高マンガン鋳鋼であ
るハドフィールド鋼(JIS SCMn 5)を、前記金型１の他端
部側の鋳込口１ａから鋳込んで（図２参照）、外径２０
００ｍｍ、肉厚３０ｍｍ（外層厚１８ｍｍ、内層厚１２
ｍｍ）、長さ２０００ｍｍの二層金属管４（図１（イ）
参照）を製造し、その二層金属管４を、図１（イ）及び
（ロ）に示すように、前記二層金属管４の軸芯Ｘ−Ｘを
通る切断面Ｙ１−Ｙ１，Ｙ２−Ｙ２，Ｙ３−Ｙ３，Ｙ４
−Ｙ４で切断して、その周方向に８等分割し、部分円筒
状の複合板からなる条材５を切り出す。前記切り出した
条材５は、その湾曲した外側の部分は炭素鋼鋳鋼品で形
成されており、内側はハドフィールド鋼で形成されてい
る。これら第１金属と第２金属との間には組成に大きな
差がないので、外層金属２と内層金属３との間の境界層
は不連続にならず、一体化した条材５が得られる。次い
で、条材５を不活性雰囲気中で１０００℃に１時間保持
の後水冷（水靱処理）する。水靱処理後のハドフィール
ド鋼は抗張力、伸び共に大きく、降伏点が低いので、塑
性加工が容易であり、外層金属の炭素鋼鋳鋼品と同様に
塑性加工可能で、図１（ハ）に示すように、冷間圧延し
て幅約４００ｍｍ、厚さ２５ｍｍ、長さ２０００ｍｍの
複合平板５Ａを作製する。上記冷間圧延後の複合平板５
Ａは、ハドフィールド鋼が加工硬化し、炭素鋼側の表面
硬度(Hv)が１８６であったに対し、ハドフィールド鋼側
の表面硬度(Hv)は３３２であった。このようにして、基
材層は充分な靱性を保有しながら表面硬度の高い複合平
板を得ることが出来た。BEST MODE FOR CARRYING OUT THE INVENTION As an example of an embodiment of the method for producing a composite plate material of the present invention, an example of producing a composite flat plate material having a wear resistant surface will be described below with reference to the drawings. explain. First, in order to form the outer layer metal 2 by centrifugal casting, carbon steel (JIS SC 3
7) In order to form the inner layer metal 3 by casting the equivalent material from the casting port 16 on the one end side of the mold 1, a metal that gives the two-layer composite plate material characteristics is used as the second metal, and high manganese cast steel is used. A certain hadfield steel (JIS SCMn 5) was cast from the casting port 1a on the other end side of the die 1 (see FIG. 2), and the outer diameter 20
00 mm, wall thickness 30 mm (outer layer thickness 18 mm, inner layer thickness 12
mm) and 2000 mm long double-layer metal tube 4 (Fig. 1 (a))
(See FIG. 1), and the two-layer metal tube 4 is cut along the cutting planes Y1-Y1, Y2- which pass through the axis XX of the two-layer metal tube 4 as shown in FIGS. Y2, Y3-Y3, Y4
-Cut at Y4, divide into 8 equal parts in the circumferential direction, and cut out the strip 5 made of a partially cylindrical composite plate. The curved outer portion of the cut-out strip 5 is made of cast carbon steel, and the inner side is made of hadfield steel. Since there is no significant difference in composition between the first metal and the second metal, the boundary layer between the outer layer metal 2 and the inner layer metal 3 does not become discontinuous, and the integrated strip 5 is obtained. . Next, the strip 5 is kept at 1000 ° C. for 1 hour in an inert atmosphere and then water-cooled (water toughening treatment). Hadfield steel after water toughness treatment has large tensile strength and elongation and low yield point, so it is easy to plastically work and can be plastically worked like carbon steel cast steel of outer layer metal, as shown in Figure 1 (c). As described above, the composite flat plate 5A having a width of 400 mm, a thickness of 25 mm and a length of 2000 mm is cold-rolled. Composite flat plate 5 after cold rolling
In A, the hadfield steel was work-hardened and the surface hardness (Hv) on the carbon steel side was 186, whereas the surface hardness (Hv) on the hadfield steel side was 332. In this way, it was possible to obtain a composite flat plate having a high surface hardness while the substrate layer had sufficient toughness.
【０００６】次に、本発明の他の実施の形態について説
明する。 〈１〉先述の実施の形態では、二層金属管に対して、基
材としての第１金属を炭素鋼鋳鋼とし、第２金属として
耐磨耗性を特性として与えるために、高マンガン鋳鋼で
あるハドフィールド鋼を用いる例を示したが、外・内層
金属２，３は、鋳鋼品に限らず、Ｎｉ基合金、Ｃｏ基合
金その他非鉄金属であってもよい。また、内層金属３を
基材としてもよい。例えば、特性を持たせる材料の鋳込
み温度が基材の鋳込み温度より高い場合には、基材を後
から鋳込む方が製品の特性を安定させることが出来るか
らである。さらに、外層金属３としての特性を持たせる
金属が塑性加工性に劣る場合にも、平板化する際に外層
金属３には加工により圧縮応力が加わるので、加工に伴
う亀裂の発生を抑制できる。また、圧延加工によって平
板化した後に耐磨耗性を付与するために、外・内層金属
２，３の一方は低炭素鋳鋼品を用い、他方には析出硬化
型合金（例えば、マルエージングステンレス鋼である N
AS MA164）を用いて、冷間圧延の後、９５０℃に均熱の
後空冷することにより、耐磨耗性を付与すべき面の硬度
が Hv352のものを得ることが出来る。尚、冷間圧延後の
熱処理を上記空冷後に５２５℃に加熱して４時間保持す
れば、上記硬度は Hv510程度にまで高めることが出来
る。 〈２〉複合板５を平板化しないままに使用できる場合に
は、第１金属に炭素鋼鋳鋼を用いて、第２金属には２７
Ｃｒ鋳鉄、Ｎｉ合金鋳鉄であるニハード、Ｃｏ合金であ
るステライト等を鋳込むことも可能である。例えば、従
来ボールミルの内張り材にはハドフィールド鋼が用いら
れているが、これに代えて表面のみに耐磨耗性を備えた
本発明の複合板材を用いることにより、使用に伴う加工
硬化に頼ること無く表面硬度の高い内張り材をボールミ
ルに適用することが可能になる。尚、この内張り材は通
常ボルトにより胴体に止め付けられるが、基材が加工容
易な炭素鋼であれば、ボルトを立て込み、或いはスタッ
ド溶接により複合板材に簡単に固定出来、ボールミル内
張り材のコストダウンが可能になる。この場合、例え
ば、外径１０００〜１５００ｍｍの二層金属管を幅５０
〜１５０ｍｍに切断すれば、平板に近い素材とすること
が出来る。このような二層金属管を形成するにも前記図
３に示したような鋳造方法が好適である。 〈３〉上記実施の形態における第２金属は耐磨耗性鋼と
した例を示したが、第２金属は耐食性鋼であってもよ
く、例えば、第２金属としてＮｉ基ステンレス合金であ
るInconel625(C:0.10%以下,Cr:20〜23%,Mo:8〜10%, Nb:
3.15〜4.15%,Fe:5%以下）や、ステンレス鋼であるＳＵ
Ｓ３０４、ＳＵＳ３１６等を用いて第２金属側に耐食性
を付与することも出来る。このようにすれば、例えば、
第１金属に基材として強度を保持させるように低マンガ
ン鋳鋼を用いれば、第２金属からなる内層金属３が耐食
性を維持しながら、第１金属からなる外層金属２で必要
な強度を保持させることが出来るようになる。尚、前記
第１金属と前記第２金属とを入れ替えることも可能であ
り、遠心鋳造に適した側にステンレス合金を用いればよ
いのである。上記例のInconrl625の場合には、条材に切
断後、５００〜６００℃の温度で熱間プレス加工し、１
００℃に均熱の後、水冷する溶体化処理を施せば、一側
面に良好な耐食性を有する複合平板材を得ることが出来
る。 〈４〉上記実施の形態では、平板化を冷間圧延によって
行う例を示したが、塑性加工は圧延に限るものではな
く、プレス加工でもよく、爆発成形等の塑性加工方法に
よってもよい。また、加工温度も材質に応じて適した温
度を選択できる。 〈５〉上記実施の形態においては、外径２０００ｍｍ、
肉厚３０ｍｍ（外層厚１８ｍｍ、内層厚１２ｍｍ）、長
さ２０００ｍｍの二層金属管を製造する例を示したが、
この寸法等は一例であって、二層金属管の諸元は任意に
選定できる。また、その切断幅も任意である。Next, another embodiment of the present invention will be described. <1> In the above-described embodiment, a high-manganese cast steel is used for the double-layer metal pipe in order to give carbon steel cast steel as the first metal as the base material and wear resistance as the second metal as a characteristic. Although an example of using a certain hadfield steel has been shown, the outer and inner layer metals 2 and 3 are not limited to cast steel products and may be Ni-based alloys, Co-based alloys and other non-ferrous metals. Further, the inner layer metal 3 may be used as the base material. This is because, for example, when the casting temperature of the material having the characteristics is higher than the casting temperature of the base material, the characteristics of the product can be stabilized by casting the base material later. Further, even when the metal having the characteristics as the outer layer metal 3 is poor in plastic workability, a compressive stress is applied to the outer layer metal 3 by working during flattening, so that the occurrence of cracks due to working can be suppressed. Also, in order to impart wear resistance after flattening by rolling, one of the outer and inner layer metals 2 and 3 is a low carbon cast steel product, and the other is a precipitation hardening alloy (for example, maraging stainless steel). Is N
By using AS MA164), after cold rolling, soaking at 950 ° C. and then air cooling, it is possible to obtain a surface having a hardness of Hv352 to which abrasion resistance is to be imparted. Incidentally, if the heat treatment after cold rolling is heated to 525 ° C. after the air cooling and held for 4 hours, the hardness can be increased to about Hv510. <2> When the composite plate 5 can be used without being flattened, carbon steel cast steel is used for the first metal and 27 for the second metal.
It is also possible to cast Cr cast iron, Ni alloy Ni-hard cast iron, Co alloy Stellite, and the like. For example, conventionally, hadfield steel is used as the lining material of a ball mill, but instead of this, by using the composite plate material of the present invention having abrasion resistance only on the surface, it relies on work hardening accompanying use. It is possible to apply a lining material having a high surface hardness to a ball mill without any trouble. This lining material is usually fastened to the body with bolts, but if the base material is carbon steel that is easy to process, it can be easily fixed to the composite plate material by raising the bolts or by stud welding. Down is possible. In this case, for example, a two-layer metal pipe having an outer diameter of 1000 to 1500 mm is used with a width of 50.
If cut to 150 mm, a material close to a flat plate can be obtained. The casting method as shown in FIG. 3 is also suitable for forming such a double-layer metal pipe. <3> Although the second metal in the above embodiment is an example of wear resistant steel, the second metal may be corrosion resistant steel, for example, Inconel 625 which is a Ni-based stainless alloy as the second metal. (C: 0.10% or less, Cr: 20-23%, Mo: 8-10%, Nb:
3.15 to 4.15%, Fe: 5% or less), and stainless steel SU
Corrosion resistance can be imparted to the second metal side by using S304, SUS316, or the like. If you do this, for example,
If low-manganese cast steel is used as the base material for the first metal so as to retain its strength, the inner layer metal 3 made of the second metal maintains corrosion resistance while the outer layer metal 2 made of the first metal retains the required strength. You will be able to. The first metal and the second metal may be replaced with each other, and a stainless alloy may be used on the side suitable for centrifugal casting. In the case of Inconrl 625 in the above example, after cutting into strips, hot press working at a temperature of 500 to 600 ° C.
After soaking at 00 ° C., a solution treatment of cooling with water can be performed to obtain a composite flat plate material having good corrosion resistance on one side. <4> In the above-described embodiment, an example in which flattening is performed by cold rolling has been shown, but the plastic working is not limited to rolling, and may be press working or a plastic working method such as explosion forming. Also, the processing temperature can be selected as an appropriate temperature according to the material. <5> In the above embodiment, the outer diameter is 2000 mm,
An example of manufacturing a double-layer metal pipe having a wall thickness of 30 mm (outer layer thickness of 18 mm, inner layer thickness of 12 mm) and a length of 2000 mm has been shown.
These dimensions and the like are examples, and the specifications of the double-layer metal pipe can be arbitrarily selected. The cutting width is also arbitrary.
【０００７】尚、特許請求の範囲の項に図面との対照を
便利にするために符号を記すが、該記入により本発明は
添付図面の構成に限定されるものではない。[0007] In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the configuration shown in the attached drawings.
【図１】本発明の複合板材の二層金属管からの製造工程
の説明図FIG. 1 is an explanatory view of a manufacturing process of a composite plate material of the present invention from a double-layer metal pipe.
【図２】本発明の二層金属管の製造工程の説明図FIG. 2 is an explanatory view of a manufacturing process of the double-layer metal pipe of the present invention.
１ 金型 ２ 外層金属 ３ 内層金属 ４ 二層金属管 ５ 複合板 ５Ａ 複合平板 1 Mold 2 Outer Layer Metal 3 Inner Layer Metal 4 Two Layer Metal Tube 5 Composite Plate 5A Composite Flat Plate
Claims (5)
に外層金属（２）として第１金属溶湯を鋳込み、前記鋳
込んだ外層金属（２）の凝固後に、内層金属（３）とし
て前記第１金属溶湯とは異なった第２金属溶湯を前記外
層金属（２）の内表面上に鋳込んで二層金属管（４）を
形成し、前記二層金属管（４）を金型（１）から取出し
た後、その管の周方向に複数箇所を切断して複合板
（５）を形成する複合板材の製造方法。1. A first metal melt is cast as an outer layer metal (2) into a cylindrical mold (1) by centrifugal casting, and the inner layer metal (3) is solidified after the cast outer layer metal (2) is solidified. As a second molten metal different from the first molten metal, it is cast on the inner surface of the outer layer metal (2) to form a double layer metal pipe (4). A method for manufacturing a composite plate material, which comprises removing the mold (1) and then cutting a plurality of portions in the circumferential direction of the tube to form a composite plate (5).
属（２）よりも融点の低い金属を鋳込む請求項１記載の
複合板材の製造方法。2. The method for producing a composite plate material according to claim 1, wherein a metal having a melting point lower than that of the outer layer metal (2) is cast as the inner layer metal (3).
を鋳込む請求項１又は２に記載の複合板材の製造方法。3. The method for producing a composite plate material according to claim 1, wherein a wear resistant metal is cast as the inner layer metal (3).
を鋳込む請求項１又は２に記載の複合板材の製造方法。4. The method for manufacturing a composite plate material according to claim 1, wherein a corrosion resistant metal is cast as the inner layer metal (3).
の製造方法によって形成した複合板（５）を塑性加工し
て複合平板（５Ａ）を形成する複合板材の製造方法。5. A method for manufacturing a composite plate material, which comprises subjecting a composite plate (5) formed by the method for manufacturing a composite plate material according to claim 1 to plastic working to form a composite flat plate (5A).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP08023602A JP3133669B2 (en) | 1996-02-09 | 1996-02-09 | Manufacturing method of composite board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP08023602A JP3133669B2 (en) | 1996-02-09 | 1996-02-09 | Manufacturing method of composite board |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09216047A true JPH09216047A (en) | 1997-08-19 |
| JP3133669B2 JP3133669B2 (en) | 2001-02-13 |
Family
ID=12115162
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP08023602A Expired - Fee Related JP3133669B2 (en) | 1996-02-09 | 1996-02-09 | Manufacturing method of composite board |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3133669B2 (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006046344A (en) * | 2004-08-03 | 2006-02-16 | Snecma | Method of manufacturing component of hollow blade by rolling |
| FR2928282A1 (en) * | 2008-03-05 | 2009-09-11 | Cmw Const Mecaniques Des Vosge | PROCESS FOR PRODUCING PLATES OF METAL, ALONE OR IN HOMOGENEOUS ALLOYS, BY CENTRIFUGATION |
| RU2699490C1 (en) * | 2019-05-17 | 2019-09-05 | Общество с ограниченной ответственностью "Инновационные металлургические технологии" (ООО "ИНМЕТ") | Method of cutting pipe on strip workpiece |
| CN110756587A (en) * | 2019-09-29 | 2020-02-07 | 鞍钢股份有限公司 | Method for preparing metal plate by centrifugal casting |
| CN110773713A (en) * | 2019-09-29 | 2020-02-11 | 鞍钢股份有限公司 | Method for preparing composite metal plate by centrifugal casting |
| CN114632835A (en) * | 2022-03-11 | 2022-06-17 | 广东省科学院新材料研究所 | Magnesium-aluminum multilayer composite board and preparation method thereof |
| WO2022182766A1 (en) * | 2021-02-23 | 2022-09-01 | Indium Corporation | Thermally decomposing build plate with casting mold for facile release of 3d printed objects |
| US11766721B2 (en) | 2019-08-23 | 2023-09-26 | Indium Corporation | Thermally decomposing build plate for facile release of 3D printed objects |
| CN117324416A (en) * | 2023-10-19 | 2024-01-02 | 深圳市鑫冠亚科技有限公司 | Preparation method of dissimilar metal composite plate strip |
| US12023735B2 (en) | 2023-03-24 | 2024-07-02 | Indium Corporation | Thermally decomposable build plate structure for stabilization of metal build surface during 3D printing and facile release of 3D printed objects |
-
1996
- 1996-02-09 JP JP08023602A patent/JP3133669B2/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006046344A (en) * | 2004-08-03 | 2006-02-16 | Snecma | Method of manufacturing component of hollow blade by rolling |
| FR2928282A1 (en) * | 2008-03-05 | 2009-09-11 | Cmw Const Mecaniques Des Vosge | PROCESS FOR PRODUCING PLATES OF METAL, ALONE OR IN HOMOGENEOUS ALLOYS, BY CENTRIFUGATION |
| WO2009112725A1 (en) * | 2008-03-05 | 2009-09-17 | Cmw - Constructions Mecaniques Des Vosges Marioni (Cmw) | Method for making metal plates, alone or in the form of a homogenous alloy, by centrifuging |
| RU2699490C1 (en) * | 2019-05-17 | 2019-09-05 | Общество с ограниченной ответственностью "Инновационные металлургические технологии" (ООО "ИНМЕТ") | Method of cutting pipe on strip workpiece |
| US11766721B2 (en) | 2019-08-23 | 2023-09-26 | Indium Corporation | Thermally decomposing build plate for facile release of 3D printed objects |
| CN110773713A (en) * | 2019-09-29 | 2020-02-11 | 鞍钢股份有限公司 | Method for preparing composite metal plate by centrifugal casting |
| CN110756587B (en) * | 2019-09-29 | 2021-05-28 | 鞍钢股份有限公司 | Method for preparing metal plate by centrifugal casting |
| CN110756587A (en) * | 2019-09-29 | 2020-02-07 | 鞍钢股份有限公司 | Method for preparing metal plate by centrifugal casting |
| WO2022182766A1 (en) * | 2021-02-23 | 2022-09-01 | Indium Corporation | Thermally decomposing build plate with casting mold for facile release of 3d printed objects |
| CN114632835A (en) * | 2022-03-11 | 2022-06-17 | 广东省科学院新材料研究所 | Magnesium-aluminum multilayer composite board and preparation method thereof |
| CN114632835B (en) * | 2022-03-11 | 2024-02-06 | 广东省科学院新材料研究所 | Magnesium-aluminum multilayer composite board and preparation method thereof |
| US12023735B2 (en) | 2023-03-24 | 2024-07-02 | Indium Corporation | Thermally decomposable build plate structure for stabilization of metal build surface during 3D printing and facile release of 3D printed objects |
| CN117324416A (en) * | 2023-10-19 | 2024-01-02 | 深圳市鑫冠亚科技有限公司 | Preparation method of dissimilar metal composite plate strip |
| CN117324416B (en) * | 2023-10-19 | 2024-06-11 | 深圳市鑫冠亚科技有限公司 | Preparation method of dissimilar metal composite plate strip |
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| Publication number | Publication date |
|---|---|
| JP3133669B2 (en) | 2001-02-13 |
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