JP2835053B2 - Heat and wear resistant liner and method of manufacturing the same - Google Patents
Heat and wear resistant liner and method of manufacturing the sameInfo
- Publication number
- JP2835053B2 JP2835053B2 JP19642488A JP19642488A JP2835053B2 JP 2835053 B2 JP2835053 B2 JP 2835053B2 JP 19642488 A JP19642488 A JP 19642488A JP 19642488 A JP19642488 A JP 19642488A JP 2835053 B2 JP2835053 B2 JP 2835053B2
- Authority
- JP
- Japan
- Prior art keywords
- outer tube
- resistant
- filler
- heat
- liner
- 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.)
- Expired - Lifetime
Links
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- Arc Welding In General (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
- Blast Furnaces (AREA)
Description
【発明の詳細な説明】 〈産業上の利用分野〉 本発明は、溶鉱炉への原料装入装置に於けるベルやシ
ュート落下部並びに焼結鉱や各種塊状物破砕装置周辺の
破砕刃・耐磨金物等高度の耐熱、耐摩耗特性が要求され
る部所に用いるライナー及びその製造方法に関するもの
である。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a crushing blade and abrasion resistance around a bell or chute dropping part, a sinter ore, and various lump crushing apparatuses in a raw material charging apparatus for a blast furnace. The present invention relates to a liner used in a place requiring high heat resistance and abrasion resistance such as hardware, and a method for producing the liner.
〈従来の技術〉 各種耐熱、耐摩耗部材として最近セラミックが注目さ
れているが、セラミックは一般に耐衝撃性に劣り、かつ
又セラミックは各種構造部材の所望部所への取付けが困
難である等未だ問題点が多い。<Conventional technology> Ceramics have recently attracted attention as various heat and wear resistant members, but ceramics are generally inferior in impact resistance, and ceramics are still difficult to attach various structural members to desired parts. There are many problems.
ところで、耐熱、耐摩耗特性に優れ、セラミックより
も耐衝撃性に富む材料として白銑鋳鉄があるが、これは
非常に硬く、かつ溶接性も良くないので、所望部所へ取
付ける場合の困難性の点については、上述のセラミック
の場合に比し、さほど利便性があるともいえない。By the way, white iron cast iron is a material that is superior in heat resistance and abrasion resistance and more impact resistant than ceramic, but it is very hard and has poor weldability, so it is difficult to install it in the desired place. Regarding the above point, it can not be said that there is much convenience as compared with the case of the above-mentioned ceramic.
本発明者等は先に白銑鋳鉄の有する利点を活かしつ
つ、それの取付上の問題点を解決する方策として、特開
昭59−232662号公報で示される様な技術を提供した。The present inventors have previously provided a technique disclosed in Japanese Patent Application Laid-Open No. 59-232632 as a measure for solving the problems in mounting the white iron cast iron while taking advantage of its advantages.
〈発明が解決しようとする課題〉 上記特開昭59−232662号公報で示される技術は、確か
にそれを他の所望部所へ取付ける方法は簡単と成り、か
つその取付部の強度も大となす事が出来るものである
が、実際の使用上次の様な新たな問題点がある事が判明
した。即ちこの公報のライナーでは、外管と内部充填材
との結合は、外管の側壁を貫通する小孔を経て外方へ突
出した内部充填材が、そこで膨らんだ形で凝固した膨ら
み部による機械的な結合であり、しかもこの膨らみ部も
必ずしも理想的な形状を呈するとは限らない事に起因す
る問題点である。更に詳述すればこの膨らみ部は溶融状
の白銑鋳鉄が凝固する時に自然に生じる形状であるの
で、実際はこの公報に図示する様に理想的に小孔の径よ
りも大きくかつ又大き過ぎない様になる事は少なく、小
孔の径以下で何ら抜け止め作用がない形状になったり、
あるいは部所により大き過ぎたりして均一性が保たれず
使用上の信頼性に乏しいという事がある。更には白銑鋳
鉄の特性上それを鋳込んだとしてもそれだけで外管と冶
金的に完全接合する事は期待できない。従って外管と内
部充填材は単に膨らみ部があるが為に抜け防止作用が働
いている機械的な結合が主となる為に、該膨らみ部が破
割すれば、横向き穴によるひっかかり効果は期待できる
が、両者の結合力は弱いものとなる、当然乍ら膨らみ部
は外管よりも脆い白銑鋳鉄製なので破割し易いし特に該
膨らみ部の首部に相当する部所や内部充填材からの立上
り部の細径部には応力が集中し易くそのいずれかの部所
から折損し易い結果、結局は寿命が短いのである。<Problem to be Solved by the Invention> The technique disclosed in the above-mentioned Japanese Patent Application Laid-Open No. 59-232662 certainly makes the method of attaching it to another desired portion simple, and the strength of the attaching portion is large. Although it can be done, it has been found that there are the following new problems in actual use. That is, in the liner disclosed in this publication, the connection between the outer tube and the inner filler is performed by a bulging portion that solidifies in a form in which the inner filler protruding outward through a small hole penetrating the side wall of the outer tube is expanded there. This is a problem caused by the fact that the bulging portion does not always have an ideal shape. More specifically, since the bulge has a shape that naturally occurs when molten white pig iron is solidified, it is ideally larger than the diameter of the small hole and not too large as shown in this publication. It is rare that the shape becomes less than the diameter of the small hole,
Alternatively, there are cases where the uniformity is not maintained due to the size being too large depending on the place and the reliability in use is poor. Furthermore, even if it is cast due to the characteristics of white pig cast iron, it cannot be expected to be completely metallurgically joined to the outer tube by itself. Therefore, since the outer tube and the inner filler have only a bulged portion and are mainly mechanically connected to prevent the slipping out, if the bulged portion is broken, the trapping effect of the horizontal hole is expected. Yes, but the bonding strength between them is weak. Naturally, the bulging part is made of white iron cast iron, which is more brittle than the outer tube, so it is easy to break, especially from the part corresponding to the neck of the bulging part and the internal filler. As a result, stress tends to concentrate on the small-diameter portion of the rising portion, and it is easy to break from any of the portions, resulting in a short life.
本発明では上記問題点を解消し、その取付性を容易化
すると共に耐久性に富むライナー及びその製造方法を提
供する事を目的とするものである。SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned problems and to provide a liner which is easy to attach and has high durability and a method for manufacturing the same.
〈課題を解決する為の手段〉 上記本発明の目的を達成する為に採用する手段は次の
如くである。<Means for Solving the Problems> Means adopted to achieve the object of the present invention are as follows.
即ち、請求項1の如く、炭素鋼若しくは低合金鋼製の
少なくとも一端開口筒状体であって、その横断面形状が
内方へ向けて窪んだ凹部を少なくも1個は有する如き形
状の外管と、同外管の内部空間部に鋳込み充填された白
銑鋳鉄製の内部充填材とから成るライナー、あるいは請
求項2の如く通常の筒状外管を用い、その外管の開口端
部に於いて外管と内部充填材との間が溶接接合される様
なライナー、あるいは請求項3の如く外管の側壁の所要
部所と内部充填材との間に於いて部分的に溶接接合され
ている様なライナーであり、この様なライナーの製造方
法としては、請求項1のライナーの場合は炭素鋼若しく
は低合金鋼製の少なくも一端が開口状の筒体であり、そ
の横断面形状が内方へ向けて窪んだ凹部を少なくとも1
個は有する如き形状の外管を準備し、その外管の開口部
から溶融状の白銑鋳鉄を鋳込み内部充填材を形成する請
求項2,3のライナーの場合は通常の形状の外管に白銑鋳
鉄を鋳込み、次いで開口端部の外管と内部充填部材間を
溶接接合する、あるいは外管の側壁外面の所要部所から
点状あるいは線状に溶接処理を施し、外管の側壁と内部
充填材との間を部分的に接合する様な方法である。That is, as in claim 1, it is a cylindrical body made of carbon steel or low-alloy steel and having at least one open end, the cross section of which has at least one concave portion depressed inward. A liner comprising a pipe and an internal filler made of white pig cast iron cast and filled in an inner space of the outer pipe, or an ordinary cylindrical outer pipe as claimed in claim 2, wherein an open end of the outer pipe is used. And a liner which is welded between the outer tube and the inner filler or partially welded between a required portion of the side wall of the outer tube and the inner filler as in claim 3. In the case of the liner according to claim 1, at least one end of the liner is made of carbon steel or low-alloy steel, and the cross section thereof is formed. At least one concave inwardly concave shape
In the case of the liner according to claims 2 and 3, the outer pipe having a normal shape is prepared by preparing an outer pipe having a shape such that the outer pipe has a shape, and casting the molten white pig iron from the opening of the outer pipe to form an internal filler. White iron cast iron is cast and then the outer tube at the open end and the inner filling member are welded together, or a spot or linear welding process is performed from a required point on the outer surface of the outer tube side wall, and the outer tube side wall is welded. This is a method of partially joining with the internal filler.
ここで請求項1のライナーの外管の形状をより詳しく
説明すると、それは一端あるいは両端が開口状の筒体
で、その筒体の横断面形状は全体の概略としては、円形
でも四角形その他の多角形でもよく、その様な横断面形
状に更に内方へ窪んだ凹部を少なくとも1個以上有する
というもので、それを図示すると例えば第2図(イ),
(ロ),(ハ)の如く各種断面形状の外管1に凹部2が
ある様な形状である。Here, the shape of the outer tube of the liner according to claim 1 will be described in more detail. It is a cylindrical body having an open end at one end or both ends, and the overall cross-sectional shape of the cylindrical body is generally circular, square, or other shapes. It may have a rectangular shape, and such a cross-sectional shape has at least one or more concave portions that are further depressed inward. FIG.
As shown in (b) and (c), the outer tube 1 having various cross-sectional shapes has a concave portion 2.
又外管の側壁と内部充填材との間の接合は、スポット
溶接や線状溶接等特に限定される事はないが、要は外管
外側から施工出来る方法を採るものとする。In addition, the joining between the side wall of the outer tube and the inner filler is not particularly limited, such as spot welding or linear welding.
なお外管の素材としては通常は配管用炭素鋼鋼管(SG
P)を、又内部充填材の素材としては通常高Cr鋳鉄(C4.
5〜5.0、Si〈1.5,Mn約1.0Cr28.0〜30.0,Mo約1.5,V約1.5
(重量%))を用いるものとする。The outer pipe is usually made of carbon steel pipe for piping (SG
P) and the material of the internal filler is usually high Cr cast iron (C4.
5 ~ 5.0, Si <1.5, Mn about 1.0Cr28.0 ~ 30.0, Mo about 1.5, V about 1.5
(% By weight)).
〈作用〉 本発明では、外側の外管を例えばベルの所要部所へ溶
接付けその他の適宜手段で取付けて用い、取付後はこの
外管はライナー全体の離脱を防止し、耐熱、耐摩耗特性
は内部充填材が受持つ。<Operation> In the present invention, the outer outer tube is attached to, for example, a required portion of the bell by welding or other appropriate means, and after the outer tube is attached, the outer tube prevents the entire liner from being detached, and has heat resistance and abrasion resistance characteristics. Is taken over by the internal filler.
〈実施例〉 以下本発明をその実施例を示し乍ら詳述する。<Example> Hereinafter, the present invention will be described in detail with reference to examples.
実施例1 第1図に本発明ライナーの実施例1の一部切欠斜視図
を示す。図中1は市販の軟鋼製角パイプ外管でこの実施
例では角筒体の四辺の中央部を内方へ湾曲状の変形させ
た形状を呈している。この外管1の内部に白銑鋳鉄製の
内部充填材2が詰められている。Embodiment 1 FIG. 1 shows a partially cutaway perspective view of Embodiment 1 of the liner of the present invention. In the drawing, reference numeral 1 denotes a commercially available mild steel square pipe outer pipe, which has a shape in which the center of four sides of a rectangular cylindrical body is curved inward in this embodiment. The outer pipe 1 is filled with an internal filler 2 made of white pig cast iron.
この第1図に示す如きライナーは次の様な手法によっ
て製造した。The liner shown in FIG. 1 was manufactured by the following method.
即ち、まず両端開口状の市販の軟鋼製角パイプを機械
的に変形させて、第1図に示す様な外管1を形成し、そ
れを砂型中に埋設し、上部開口部から溶融状の白銑鋳鉄
を流し込み放冷凝固させ内部充填材2となしたのであ
る。That is, first, a commercially available mild steel square pipe having openings at both ends is mechanically deformed to form an outer tube 1 as shown in FIG. 1, which is buried in a sand mold, and is melted from an upper opening. White iron cast iron was cast and allowed to cool and solidify to form the internal filler 2.
実施例2 この実施例2は、第3図に示す様に、市販の軟鋼製両
端開口状の角筒状外管1を、砂型中に埋設し、上部開口
部から溶融状の白銑鋳鉄を流し込み放冷凝固させ内部充
填材2となし、その後に外管の両開口端面部に於いて、
外管1と内部充填材2をTIG溶接法で再溶融接合し、端
面接合部aを形成したものである。Example 2 In Example 2, as shown in FIG. 3, a commercially available mild steel square tubular outer tube 1 having both ends opened was buried in a sand mold, and molten white pig iron was poured from the upper opening. Poured and allowed to cool and solidify to form the internal filler 2. Then, at both open end faces of the outer tube,
The outer tube 1 and the inner filler 2 are re-melted and joined by the TIG welding method to form an end face joint a.
実施例3 この実施例3は、第4図に示す様に、SGP製両端開口
状の円筒状外管1を、砂型中に埋設し、上部開口部から
溶融状の白銑鋳鉄を流し込み、放冷却凝固させ内部充填
材2となし、その後に外管の外周面所要部所からスポッ
ト状TIG溶接による再溶融接合を施し、側面接合部bを
形成したものである。この側面接合部b部分は第5図に
示す様に、外管1と内部充填材2とが、再溶融凝固部3
を介し強固に結合されている事を確認した。Embodiment 3 In this embodiment 3, as shown in FIG. 4, a cylindrical outer tube 1 made of SGP and having both ends opened is buried in a sand mold, and molten white pig iron is poured from an upper opening and discharged. It is cooled and solidified to form the internal filler 2, and then re-melted by spot-shaped TIG welding from a required portion on the outer peripheral surface of the outer tube to form a side joint b. As shown in FIG. 5, the outer joint 1 and the inner filler 2 are connected to the re-solidification part 3 by the side joint b.
It was confirmed that they were firmly bound via the.
〈発明の効果〉 以上述べて来た如く本発明のライナーは、それをベル
その他の所適部所へ取付ける際には、外管が溶接性,機
械加工性が良好な炭素鋼若しくは低合金鋼から構成され
るが為に、溶接止めでもボルト等を用いる機械的取付け
でもいずれも可能かつその取付け強度は大となる。又こ
の外管はそれが内部充填材の周側全体を外包しており、
隣接ライナーとの間に隙間が無い様に取付けた場合は勿
論だが、隣接ライナー間に隙間がある場合でも、その上
面となる部分が摩滅しても側面部はさほど摩滅せず長期
に渡って残りこれが緩衝材的働きをなし、内部充填材が
受ける衝撃を軽減するものである。<Effects of the Invention> As described above, when the liner of the present invention is mounted on a bell or other appropriate part, the outer pipe is made of carbon steel or low alloy steel having good weldability and machinability. Therefore, any of a welding stop and a mechanical attachment using a bolt or the like is possible, and the attachment strength is large. In addition, this outer tube encloses the entire peripheral side of the inner filler,
Of course, if there is a gap between adjacent liners, even if there is a gap between adjacent liners, even if the upper part is worn, the side parts will not wear much and will remain for a long time This acts as a cushioning material and reduces the impact on the internal filler.
上記の如き役割を有する外管内の内部充填材は、上面
にくる外管部が摩滅した後にそれ本来の耐熱耐摩耗性機
能を発現するものであり、該内部充填材は外管との間で
は、端面部の溶接、側面部の溶接、あるいは外管が内方
へ窪んだ凹部を持つ事による機械的な結着により互いに
離脱しない様に構成されている為にこの内部充填材が剥
落するという事が無い。しかもこの内部充填材には前記
従来技術として例示した特開昭59−232662号公報で示さ
れるライナーの様に、比較的脆い白銑鋳鉄製内部充填材
に、それ自体が外部へ突出している様な部分も、他より
は細い部分も無いので破割、折損の心配もなく全体とし
て耐久性に富むものである。The inner filler in the outer tube having the role as described above expresses its original heat and abrasion resistance function after the outer tube portion coming on the upper surface is worn out, and the inner filler is in contact with the outer tube. The inner filler is peeled off because it is constructed so that it does not separate from each other by welding of the end face part, welding of the side part, or mechanical binding by the outer pipe having a concave part that is depressed inward. There is nothing. In addition, the internal filler is made of a relatively brittle white iron cast iron internal filler, such as the liner disclosed in Japanese Patent Application Laid-Open No. 59-232662, which is exemplified as the above-mentioned prior art. There are no thinner parts than other parts, so there is no fear of breakage or breakage and the whole is highly durable.
なお上記詳細に述べた如く本発明のライナーは、外管
と内部充填材とを溶接による接合、凹部を持つ外管それ
自体と内部充填材との結合によって結び付けているが、
これらの3タイプをそれぞれ個別的に採用する他に、複
数のタイプを併用すればより一層好ましい事は勿論であ
る。As described in detail above, the liner of the present invention joins the outer tube and the inner filler by welding and bonding the outer tube itself having the concave portion to the inner filler,
Needless to say, it is more preferable to use a plurality of types in addition to the three types individually.
なお本発明のライナーは上述の如く外管に溶湯を鋳込
む事により得られるので、用いる外管を曲管状やテーパ
ー状としておけばその形状のライナーを得る事が出来る
ものである。Since the liner of the present invention can be obtained by casting a molten metal into the outer tube as described above, a liner of that shape can be obtained by forming the outer tube to be curved or tapered.
第1図は本発明実施例1のライナーの一部切欠斜視図、
第2図(イ),(ロ),(ハ)は同外管の各種断面形状
を示す説明図、第3図は本発明実施例2のライナーの一
部切欠斜視図、第4図は本発明実施例3のライナーの一
部切欠斜視図、第5図は同要部拡大図。 図中、1:外管 2:内部充填材 3:再溶融凝固部FIG. 1 is a partially cutaway perspective view of a liner according to Embodiment 1 of the present invention,
2 (a), 2 (b) and 2 (c) are explanatory views showing various cross-sectional shapes of the outer tube, FIG. 3 is a partially cutaway perspective view of the liner of Embodiment 2 of the present invention, and FIG. FIG. 5 is a partially cutaway perspective view of a liner according to a third embodiment of the present invention, and FIG. In the figure, 1: Outer pipe 2: Internal filler 3: Re-melted solidified part
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.6,DB名) B22D 19/00,19/06 C21B 7/20 B23K 9/02,9/167──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. 6 , DB name) B22D 19 / 00,19 / 06 C21B 7/20 B23K 9 / 02,9 / 167
Claims (6)
端開口筒状体であって、その横断面形状が内方へ向けて
窪んだ凹部を少なくとも1個は有する如き形状の外管
と、同外管の内部空間部に鋳込み充填された白銑鉄製の
内部充填材とから成ることを特徴とする耐熱、耐摩耗性
ライナー。1. An outer tube made of carbon steel or low-alloy steel and having at least one open end and having at least one concave portion having a cross section depressed inward. A heat-resistant and wear-resistant liner comprising an internal filler made of white pig iron cast and filled into an inner space of an outer tube.
端開口筒状体から成る外管と、同外管の内部空間部に鋳
込み充填された白銑鉄製の内部充填材とから成り、しか
も外管の開口端部に於いては外管と内部充填材との間が
溶接接合されていることを特徴とする耐熱、耐摩耗性ラ
イナー。2. An outer tube made of carbon steel or low-alloy steel and having at least one end open cylindrical body, and an internal filler made of white pig iron cast and filled in an inner space of the outer tube. A heat-resistant and wear-resistant liner, wherein an outer tube and an inner filler are welded at an open end of the tube.
開口筒状体から成る外管と、同外管の内部空間部に鋳込
み充填された白銑鉄製の内部充填材とから成り、しかも
外管の側壁の所用部所と内部充填材との間が部分的に溶
接接合されていることを特徴とする耐熱、耐摩耗性ライ
ナー。3. An outer pipe made of carbon steel or a low alloy, comprising an outer tubular body having at least one end open cylindrical body, and an internal filler made of white pig iron cast and filled into an inner space of the outer pipe. A heat-resistant and abrasion-resistant liner, characterized in that a portion between a required portion of a side wall of the inner wall and an inner filler is partially welded and joined.
一端が開口状の筒状であり、その横断面形状が内方へ向
けて窪んだ凹部を少なくとも1個は有する如き形状の外
管を準備し、その外管の開口部から溶融状の白銑鉄を鋳
込み内部充填材を形成することを特徴とする耐熱、耐摩
耗性ライナーの製造方法。4. An outer tube made of low-carbon steel or low-alloy steel and having at least one end having an open cylindrical shape and having at least one concave portion having a cross section depressed inward. A method for producing a heat-resistant and abrasion-resistant liner, comprising preparing and casting molten white pig iron from an opening of the outer tube to form an internal filler.
端が開口状の外管を準備し、その外管の開口部から溶融
状の白銑鉄を鋳込み内部充填材を形成し、次いで開口端
部の外管と内部充填材を溶接接合することを特徴とする
耐熱、耐摩耗性ライナーの製造方法。5. An outer tube made of carbon steel or low-alloy steel having at least one open end is prepared, molten white pig iron is cast from an opening of the outer tube to form an internal filler, and then an open end is formed. A method for producing a heat-resistant and wear-resistant liner, comprising welding and joining an outer tube and an inner filler material.
端が開口状の外管を準備し、その外管の開口部から溶融
状の白銑鋳鉄を鋳込み内部充填材を形成し、次いで外管
の側壁外面の所要部所から、点状あるいは線状に溶接処
理を施し、外管の側壁と内部充填材との間を部分的に接
合することを特徴とする耐熱、耐摩耗性ライナーの製造
方法。6. An outer pipe made of carbon steel or low alloy steel and having at least one open end is prepared, and molten white pig iron is cast from the opening of the outer pipe to form an internal filler. Manufacturing a heat-resistant, wear-resistant liner characterized by performing a welding process in a dotted or linear manner from a required portion of the outer surface of the side wall of the outer pipe and partially joining the side wall of the outer pipe and the inner filler. Method.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19642488A JP2835053B2 (en) | 1988-08-05 | 1988-08-05 | Heat and wear resistant liner and method of manufacturing the same |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19642488A JP2835053B2 (en) | 1988-08-05 | 1988-08-05 | Heat and wear resistant liner and method of manufacturing the same |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0246966A JPH0246966A (en) | 1990-02-16 |
JP2835053B2 true JP2835053B2 (en) | 1998-12-14 |
Family
ID=16357619
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP19642488A Expired - Lifetime JP2835053B2 (en) | 1988-08-05 | 1988-08-05 | Heat and wear resistant liner and method of manufacturing the same |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2835053B2 (en) |
-
1988
- 1988-08-05 JP JP19642488A patent/JP2835053B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH0246966A (en) | 1990-02-16 |
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