JPS63290695A - Production of composite plug - Google Patents
Production of composite plugInfo
- Publication number
- JPS63290695A JPS63290695A JP12524287A JP12524287A JPS63290695A JP S63290695 A JPS63290695 A JP S63290695A JP 12524287 A JP12524287 A JP 12524287A JP 12524287 A JP12524287 A JP 12524287A JP S63290695 A JPS63290695 A JP S63290695A
- Authority
- JP
- Japan
- Prior art keywords
- core material
- plug
- welding
- water
- melted
- 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
- 239000002131 composite material Substances 0.000 title claims abstract description 19
- 238000004519 manufacturing process Methods 0.000 title claims description 16
- 239000011162 core material Substances 0.000 claims abstract description 28
- 239000000463 material Substances 0.000 claims abstract description 26
- 238000003466 welding Methods 0.000 claims abstract description 14
- 239000002184 metal Substances 0.000 claims abstract description 13
- 229910052751 metal Inorganic materials 0.000 claims abstract description 13
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims description 16
- 239000000956 alloy Substances 0.000 claims description 8
- 238000005275 alloying Methods 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 abstract description 9
- 239000010959 steel Substances 0.000 abstract description 9
- 238000005266 casting Methods 0.000 abstract description 3
- 238000005299 abrasion Methods 0.000 abstract 1
- 230000004907 flux Effects 0.000 abstract 1
- 230000008018 melting Effects 0.000 abstract 1
- 238000002844 melting Methods 0.000 abstract 1
- 238000005096 rolling process Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 239000002893 slag Substances 0.000 description 6
- 230000004927 fusion Effects 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910001021 Ferroalloy Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011143 downstream manufacturing Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000010309 melting process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000035807 sensation Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K25/00—Slag welding, i.e. using a heated layer or mass of powder, slag, or the like in contact with the material to be joined
- B23K25/005—Welding for purposes other than joining, e.g. built-up welding
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Arc Welding In General (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明はシームレス鋼管等を製造する際に使用する複合
プラグの製造方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for manufacturing a composite plug used in manufacturing seamless steel pipes and the like.
（従来の技術）
プラグミル圧延法はシームレス鋼管全製造する方法とし
て広く採用されている方法である。(Prior Art) The plug mill rolling method is a method widely adopted as a method for completely manufacturing seamless steel pipes.
一般に継目無鋼管の製造工程においては始めに適正温度
に加熱した鋼片を穿孔機を用いて中空素管に成形する。Generally, in the manufacturing process of seamless steel pipes, a steel billet heated to an appropriate temperature is first formed into a hollow pipe using a punching machine.
後工程に位置した延伸機では中を木管を回転させながら
プラグによｐ楕円形を呈しながら中空素管の厚さを減少
させる。そして延伸機の後工程であるプラグミルは第４
図に示す様に圧延プラグ２ｔ−素管１の内部に挿入した
状態で素管外周を圧延ロール３により圧延している。図
中４は挿入具、５＃′ｉ螺子、６はマンドレルパー、７
は受は具、８はバネを示す。The drawing machine located in the post-process rotates the wood pipe inside and reduces the thickness of the hollow tube while giving the plug an elliptical shape. The plug mill, which is the downstream process of the drawing machine, is the fourth
As shown in the figure, the rolling plug 2t is inserted into the interior of the raw tube 1, and the outer periphery of the raw tube is rolled by the rolling rolls 3. In the figure, 4 is an insertion tool, 5 is a #'i screw, 6 is a mandrel par, and 7 is a
1 indicates the receiver, and 8 indicates the spring.
このようなプラグは単一材料で製造されていた。Such plugs were manufactured from a single material.
（発明が解決しようとする問題点）
前記プラグ２は高温の素管１が回転するため素管ｌから
の熱、伝導と素管１とプラグ２の摩擦熱により高温にな
り、且つ圧延ロール３により圧下されるためほとんどが
割れ、摩耗によって廃棄される。したがってプラグ材質
としては高温で高硬度、しかも高強度と云った具備特性
が必要である。プラグ２は従来は鍛造成いは鋳造により
つくられており一体物であった。したがって材質的に割
れ易くなっており、一旦クラックが発生するとクラック
が伝播し易く中径方向に２つに割損し廃棄寿命が短い等
の欠点があった。ｌた、本発明者等が芯材に高合金材料
の溶湯を注入する鋳造法で複合プラグの製造を試みたが
、芯材と高合金材料との融着が熱量不足で、不完全でめ
りた。そのため芯材と高合金材料からなる外層材とが分
離し易く、複合プラグの製造が困難であり次。(Problems to be Solved by the Invention) The plug 2 becomes high in temperature due to heat and conduction from the raw pipe 1 and frictional heat between the raw pipe 1 and the plug 2 as the high-temperature raw pipe 1 rotates, and Most of them crack and are discarded due to wear and tear. Therefore, the material of the plug must have characteristics such as high hardness and high strength at high temperatures. Conventionally, the plug 2 was made by forging or casting, and was a one-piece piece. Therefore, the material is easily cracked, and once a crack occurs, the crack tends to propagate, resulting in breakage in two pieces in the radial direction, resulting in a short discard life. In addition, the present inventors attempted to manufacture a composite plug using a casting method in which molten high-alloy material was injected into the core material, but the fusion between the core material and the high-alloy material was incomplete due to insufficient heat. It was. As a result, the core material and the outer layer material made of high alloy material tend to separate, making it difficult to manufacture composite plugs.
（問題点を解決するための手段）
本発明は、かかる問題点を解決する方法であシ、その要
旨は耐摩耗、耐熱性の優れた高合金材料からなる外層材
と、プラグの芯に靭性材料を用いた複合プラグを製造す
るに際し、鋳型内に芯材を垂直に立て、該鋳型内でエレ
クトロスラグ浴接を行ないながら浴湯を注入及び／又は
高合金元素を含んだ鉄粉を投入し、前記芯材に高合金材
料を肉盛することを特徴とする複合プラグの製造方法で
おる。(Means for Solving the Problems) The present invention is a method for solving these problems, and its gist is that the outer layer material is made of a high alloy material with excellent wear resistance and heat resistance, and the core of the plug has toughness. When manufacturing a composite plug using this material, the core material is placed vertically in a mold, and bath water is injected and/or iron powder containing high alloying elements is poured into the mold while performing electroslag bath welding. , a method for manufacturing a composite plug, characterized in that the core material is overlaid with a high alloy material.
（作 用）
本発明法により製造した複合プラグは、この様な割損に
対して有利に解決されるものであり、第１図に本発明法
により製造した複合プラグの１例を示す。外側材９は高
温でも高硬度であυ、合金元素を多量に含有しており、
芯材１０は炭素含有量が少ない、靭性の大きい材料の組
み合せの複合プラグである。本発明の特徴とするところ
はエレクトロスラグ溶接によるスラグのジュール熱によ
り芯材の表面を溶融し、合金元素を多く含んだ溶湯及び
／又は合金粉と混ぜた鉄粉を添加して複合プラグをつく
ることである。(Function) The composite plug manufactured by the method of the present invention advantageously solves such breakage problems, and FIG. 1 shows an example of the composite plug manufactured by the method of the present invention. The outer material 9 has high hardness even at high temperatures, and contains a large amount of alloying elements.
The core material 10 is a composite plug made of a combination of materials with low carbon content and high toughness. The feature of the present invention is that the surface of the core material is melted by the Joule heat of the slag by electroslag welding, and a composite plug is created by adding molten metal containing a large amount of alloying elements and/or iron powder mixed with alloy powder. That's true.
次に本発明複合プラグの製造法について説明する。Next, a method for manufacturing the composite plug of the present invention will be explained.
本発明の製造の態様例を第２図によって説明する。An example of the manufacturing mode of the present invention will be explained with reference to FIG. 2.
第２図に示す様に靭性の大きい材料の・母イブまたは丸
鋼の芯材１０を垂直にセットしその周囲に水冷モール）
”１３ｉ配設し溶接ノズル１６から浴接ワイヤ１５を供
給し電圧全印加し水冷モールド１３内に入れた７ラツク
スを溶融させ浴融スラグ１２をつくりその溶融スラグ１
２によシ、垂直にセットした・母イグまｆｃは丸鋼の芯
材１０表面を溶融させる。芯材表面が溶は始めると別の
溶解ｆで溶製した溶湯１１を水冷モールド１３と芯材１
０の間隙に一定の速度で連続的にまたは間欠的に注湯し
複合プラグをつくる方法である。このように本発明方法
で行うと、溶融スラグ１２内に高熱量のソエール熱が発
生し、芯材ｌＯの表面が充分に溶融し、外層材９との融
着が完全なものとなる。この場合、溶融スラグ１２が形
成された時点で周方向で溶着を円滑にする目的で回転テ
ーブル１８を回し始め、肉感が終了すると停止させるこ
とは有効である。As shown in Fig. 2, a core material 10 made of a material with high toughness or round steel is set vertically and a water-cooled molding is placed around it.
13i, the bath welding wire 15 is supplied from the welding nozzle 16, and the full voltage is applied to melt the 7 lacs placed in the water-cooled mold 13 to create the bath molten slag 12.
In step 2, the mother igma fc set vertically melts the surface of the round steel core material 10. When the surface of the core material begins to melt, the molten metal 11 produced by another melting process is transferred to the water-cooled mold 13 and the core material 1.
This is a method of making a composite plug by continuously or intermittently pouring metal into a gap of zero at a constant rate. When the method of the present invention is carried out in this manner, a high amount of Soer heat is generated within the molten slag 12, the surface of the core material 10 is sufficiently melted, and the fusion with the outer layer material 9 is completed. In this case, it is effective to start rotating the rotary table 18 for the purpose of smoothing welding in the circumferential direction when the molten slag 12 is formed, and to stop it when the texture is finished.
（実施例） 次に実施例金あげて説明する。(Example) Next, examples will be given and explained.
実施例１
母材は炭素ｇ４ＳＳ−４１でサイズは外径１５０罵φ長
さ１５０ｍｔの丸鋼を使用し肉盛は表−１に示す条件で
第１図に示す笑施態様で実施した。この時の電気的な条
件は過去の実験より芯灯と肉盛金属が完全に浴着する条
件とした。Example 1 The base material was a round steel of carbon g4SS-41 with an outer diameter of 150 mm and a length of 150 mt. Overlay was carried out under the conditions shown in Table 1 and in the manner shown in FIG. 1. Based on past experiments, the electrical conditions at this time were such that the core lamp and overlay metal were completely bonded to each other.
その結果、母材の溶けこみは０．５〜３■程度となりク
ラツド材との境界の溶着は良好で境界にはスラグ噛み等
の欠陥はなく品質的゛には良好なものが出来た。そして
加工・熱処理後、成品に仕上げ実機プラグ圧延機に使用
した。その結果、外層材は水冷モールドを使用している
ため凝固組織が緻密で、従来のものより使用中のクラッ
クも微細で浅く芯材に靭性の大きい材料を使用し複合材
となっているため便用中のクランクも貫通せず、割損に
よるプラグの廃棄も激減し従来品の一体物プラグに比べ
て約５０％工具原車位が向上した。As a result, the welding of the base material was about 0.5 to 3 cm, the welding at the boundary with the cladding material was good, and there were no defects such as slag bite at the boundary, and the product was of good quality. After processing and heat treatment, the product was finished and used in an actual plug rolling mill. As a result, the outer layer material has a dense solidified structure because it uses a water-cooled mold, and the cracks during use are smaller and shallower than conventional ones. It does not penetrate the crank during use, drastically reduces the amount of plugs that are discarded due to breakage, and improves the tooling position by approximately 50% compared to conventional one-piece plugs.
実施例２
第３図の実施態様図に示す如く外層材９として溶湯１１
の代りに背金元素を混ぜた鉄粉１９を使用して実施した
。Example 2 As shown in the embodiment diagram of FIG. 3, a molten metal 11 was used as the outer layer material 9.
The experiment was carried out using iron powder 19 mixed with a back metal element instead.
芯材は外径１５０ｍｍφ内径９０■φ長さ４５０ｍ５＋
のものを使用しプラグが３個切出せる水冷モールド１３
とした。肉感は表−２に示す条件で行なり友。その結果
、溶湯を注入した盛合の複合プラグとほぼ同等の品質の
ものが出来、実機適用テストの結果も同等レベルのＦｙ
、績であっ念。Core material is outer diameter 150mmφ inner diameter 90■φ length 450m5+
Water-cooled mold 13 that can cut out three plugs using
And so. The flesh sensation was obtained under the conditions shown in Table 2. As a result, a product with almost the same quality as a composite plug injected with molten metal was produced, and the results of the actual machine application test were also at the same level.
, Congratulations on the achievement.
（発明の効果）
以上よｐ本発明法によシ製造した複合プラグは従来の一
体物のプラグに比較して圧延使用中、割損し雌く、大幅
に工具原単位を向上させることがでさた。また、本発明
の方法では複合のため・ｆイブと接触する材質の合金元
素をアップしても、芯材の靭性が確保できるため、外層
成分の高合金化が可能で摩耗量も減少しうろことがわか
った。さらに芯材と外層材が完全に融層しているので、
芯材と外層材の分離によるプラグ外層材の割損もなくな
る。(Effects of the Invention) As described above, the composite plug manufactured by the method of the present invention is less prone to breakage during rolling use than the conventional one-piece plug, and can significantly improve tool consumption. Ta. In addition, since the method of the present invention is a composite material, the toughness of the core material can be ensured even if the alloying elements of the material in contact with the f-beam are increased, so the outer layer components can be highly alloyed and the amount of wear is reduced. I found out. Furthermore, since the core material and outer layer material are completely fusion layered,
Breakage of the plug outer layer material due to separation of the core material and outer layer material is also eliminated.
第１図は本発明法により製造した複合プラグ例の形状を
示す図、
第２図は本発明のプラグ製造方法の１例を示すもので溶
湯を使用する場合の実施状況図、第３図は本発明のプラ
グ製造方法の他の１例を示すもので合金鉄粉を使用した
場合の実施状況図、
第４図は従来技術の説明図である。
１・・・素管 ２・・・圧延プラグ３・・・圧
延ロール ４・・・挿入具５・・・螺子 ６
・・・マンドレルパー７・・・受は具 ８・・・
バネ
９・・・外層材 １０・・・芯材１１・・・溶湯
１２・・・＃融スラグ１３・・・水冷モールド
１４・・・注入柄杓１５・・・溶接ワイヤ １６・・
・溶接ノズル１７・・・スタートタブ １８・・・回転
テーブル１９・・・合金鉄８） ２０・・・ホッパ
ー″１．“
本 多 ゛ １菖ｊ
第１図
第２図
第４図Fig. 1 is a diagram showing the shape of an example of a composite plug manufactured by the method of the present invention, Fig. 2 is a diagram showing an example of the plug manufacturing method of the present invention in the case of using molten metal, and Fig. 3 is a diagram showing the implementation situation when molten metal is used. This shows another example of the plug manufacturing method of the present invention, and is a diagram showing the implementation situation when using alloyed iron powder. FIG. 4 is an explanatory diagram of the prior art. 1...Made pipe 2...Rolling plug 3...Rolling roll 4...Insertion tool 5...Screw 6
... Mandrel par 7... Uke is tool 8...
Spring 9... Outer layer material 10... Core material 11... Molten metal 12... #Melted slag 13... Water cooling mold 14... Injection ladle 15... Welding wire 16...
・Welding nozzle 17... Start tab 18... Rotary table 19... Ferroalloy 8) 20... Hopper "1." Figure 1 Figure 2 Figure 4
Claims (1)
プラグの芯に靭性材料を用いた複合プラグを製造するに
際し、鋳型内に芯材を垂直に立て、該鋳型内でエレクト
ロスラグ溶接を行ないながら溶湯を注入及び／又は高合
金元素を含んだ鉄粉を投入し、前記芯材に高合金材料を
肉盛することを特徴とする複合プラグの製造方法。Outer layer material made of high alloy material with excellent wear resistance and heat resistance,
When manufacturing a composite plug using a tough material for the core of the plug, the core material is placed vertically in a mold, and molten metal is injected and/or iron powder containing high alloying elements is injected while performing electroslag welding within the mold. A method for manufacturing a composite plug, characterized in that the core material is overlaid with a high alloy material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12524287A JPS63290695A (en) | 1987-05-22 | 1987-05-22 | Production of composite plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12524287A JPS63290695A (en) | 1987-05-22 | 1987-05-22 | Production of composite plug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63290695A true JPS63290695A (en) | 1988-11-28 |
Family
ID=14905300
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12524287A Pending JPS63290695A (en) | 1987-05-22 | 1987-05-22 | Production of composite plug |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63290695A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60148689A (en) * | 1984-01-10 | 1985-08-05 | Nippon Steel Corp | Production of composite seamless guide shoe |
-
1987
- 1987-05-22 JP JP12524287A patent/JPS63290695A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60148689A (en) * | 1984-01-10 | 1985-08-05 | Nippon Steel Corp | Production of composite seamless guide shoe |
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