JPH05195099A - Method for floating up and separating inclusion in metal - Google Patents
Method for floating up and separating inclusion in metalInfo
- Publication number
- JPH05195099A JPH05195099A JP4006931A JP693192A JPH05195099A JP H05195099 A JPH05195099 A JP H05195099A JP 4006931 A JP4006931 A JP 4006931A JP 693192 A JP693192 A JP 693192A JP H05195099 A JPH05195099 A JP H05195099A
- Authority
- JP
- Japan
- Prior art keywords
- metal
- inclusions
- electron beam
- bath
- melting
- 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.)
- Withdrawn
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Investigating And Analyzing Materials By Characteristic Methods (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、電子ビーム溶解法によ
り、目的金属中の非金属介在物を浮上分離させる方法に
関し、より詳細には、特定の浴材を用いることにより、
介在物を分解させることなく全量速やかに浮上させる方
法である。この方法を利用し金属中の非金属介在物の定
性および定量分析を行うことができる。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of floating and separating non-metallic inclusions in a target metal by an electron beam melting method. More specifically, by using a specific bath material,
This is a method in which the entire amount is quickly raised without decomposing inclusions. This method can be used for qualitative and quantitative analysis of non-metallic inclusions in metals.
【０００２】[0002]
【従来の技術】金属中の非金属介在物を分析する際の介
在物分離方法として、電子ビーム溶解法がある。この方
法は、高真空下水冷銅ハース上で電子ビームにより金属
を溶解し、溶融金属の比重差や熱対流によって、金属中
の非金属介在物を外部からの汚染を受けることなく浮上
分離させることが可能である。この従来法としては特開
平１−70134 号に開示された方法があるが、これではド
リップ溶解あるいはボタン溶解にかかわらず、水冷銅ハ
ースと接触した部分からの目的金属中の介在物の分離
は、凝固が速やかに起こるか、溶解が不完全なために不
可能である。また、溶湯プールの深さを十分に得るため
電子ビームの出力を上げると表面近傍に浮上した介在物
の分解が起こったり、溶湯プールの深さが不明なため溶
解部分の重量の見積が困難であるという問題があった。
加えて、目的金属の量、形状によっては介在物の浮上に
多大の時間を要するといった欠点があった。2. Description of the Related Art As a method for separating inclusions when analyzing non-metallic inclusions in a metal, there is an electron beam melting method. This method melts the metal with an electron beam on a water-cooled copper hearth under high vacuum, and floats and separates non-metallic inclusions in the metal without being contaminated from the outside by the difference in specific gravity of the molten metal and thermal convection. Is possible. As this conventional method, there is a method disclosed in Japanese Patent Application Laid-Open No. 1-70134, which separates inclusions in the target metal from the portion in contact with the water-cooled copper hearth regardless of drip melting or button melting. Not possible due to rapid solidification or incomplete dissolution. In addition, if the electron beam output is increased to obtain a sufficient depth of the molten metal pool, the inclusions floating near the surface may be decomposed, or the depth of the molten metal pool is unknown, making it difficult to estimate the weight of the molten portion. There was a problem that there was.
In addition, depending on the amount and shape of the target metal, it takes a long time to float the inclusions.
【０００３】[0003]
【発明が解決しようとする課題】本発明の目的は、上述
のような従来技術の欠点を克服した、電子ビーム溶解に
よる目的金属中の非金属介在物分離浮上方法を提供する
ことである。SUMMARY OF THE INVENTION It is an object of the present invention to provide a method of separating and floating non-metallic inclusions in a target metal by electron beam melting, which overcomes the above-mentioned drawbacks of the prior art.
【０００４】[0004]
【課題を解決するための手段】本発明者らは、電子ビー
ム溶解による金属中の介在物浮上分離の際に、目的金属
と実質的に同一組成を有し、予め非金属介在物を除去し
た金属を浴材として用いれば、前述の欠点を克服できる
ことを見出し、本発明を完成した。The inventors of the present invention have previously removed non-metallic inclusions which have substantially the same composition as the target metal during floating separation of inclusions in the metal by electron beam melting. The present invention has been completed by finding that the above drawbacks can be overcome by using a metal as a bath material.
【０００５】本発明は、電子ビーム溶解により目的金属
中の非金属介在物を浮上分離させる方法おいて、目的金
属と実質的に同一組成を有し、非金属介在物を予め除去
した金属を浴材として用い、目的金属を浴材と共に電子
ビームにより溶解することを特徴とする、目的金属中の
非金属介在物を分解することなく浮上分離させる方法、
を要旨とする。The present invention relates to a method of floating and separating non-metallic inclusions in a target metal by electron beam melting, which comprises bathing a metal having substantially the same composition as the target metal and previously removing the non-metal inclusions. Used as a material, characterized in that the target metal is dissolved by an electron beam together with a bath material, a method of floating separation without decomposition of non-metallic inclusions in the target metal,
Is the gist.
【０００６】また、上記方法において、浴材として用い
る金属の非金属介在物の除去は、該金属を電子ビームに
より溶解して非金属介在物を浮上分離させた後、分離し
た介在物を分解、蒸発および／または機械的手段で除去
することにより行うのが好ましい。このような本発明方
法は、目的金属中の非金属介在物の分析に有用である。In the above method, the non-metallic inclusions of the metal used as the bath material are removed by melting the metal with an electron beam to separate the non-metallic inclusions by levitation, and then decomposing the separated inclusions. It is preferably carried out by evaporation and / or removal by mechanical means. Such a method of the present invention is useful for analysis of non-metallic inclusions in the target metal.
【０００７】[0007]
【作用】本発明では、目的金属と実質的に同一組成を有
し、予め非金属介在物を除去した金属浴を使用すること
を特徴とし、これにより、目的金属中に含まれる非金属
介在物を浴金属からの影響を受けることなく全量浮上分
離させることができる。The present invention is characterized by using a metal bath which has substantially the same composition as the target metal and in which the non-metal inclusions have been removed beforehand, whereby the non-metal inclusions contained in the target metal are used. Can be floated and separated without being affected by the bath metal.
【０００８】浴金属が目的金属と実質的に同一組成を有
するとは、同一規格程度の組成の一致があればよいこと
を意味し、さらに目的金属と同一ロットの浴であればよ
り好ましい。The fact that the bath metal has substantially the same composition as that of the target metal means that there is a need for the compositions to match the same specifications, and it is more preferable that the bath has the same lot as the target metal.
【０００９】金属浴の非金属介在物の除去は、電子ビー
ム溶解を利用して行うことができる。電子ビーム溶解に
より、金属浴中に含まれる非金属介在物を浮上分離させ
た後、表面に浮上した介在物を分解もしくは蒸発させ
て、あるいは必要に応じて機械的に除去すればよい。こ
の方法について以下に説明する。The removal of non-metallic inclusions in the metal bath can be carried out using electron beam melting. After the non-metallic inclusions contained in the metal bath are floated and separated by electron beam melting, the inclusions floating on the surface may be decomposed or evaporated, or mechanically removed as necessary. This method will be described below.
【００１０】浴材中の介在物除去のための電子ビーム溶
解は、目的金属中の介在物浮上のために溶解する場合よ
りも高い電子ビーム出力で長時間行うことが望ましい。
電子ビーム出力に関しては 1.2倍ないし２倍程度、時間
に関しては２倍以上が適当であるが、浴材を溶製する場
合に浴金属に含まれる非金属介在物を分解あるいは蒸発
させて除去するのに適した条件であれば特に限定されな
い。電子ビームの照射による介在物の分解と蒸発による
除去が困難な場合には、一旦冷却して取り出した後、金
属の表面に凝集した介在物をボール盤、研摩機等の機械
的手段により除けばよい。It is desirable that the electron beam melting for removing the inclusions in the bath material is performed for a long time with a higher electron beam output than that for melting the inclusions in the target metal due to the floating of the inclusions.
About 1.2 to 2 times the electron beam output and twice or more the time are suitable, but when melting the bath material, the non-metal inclusions contained in the bath metal are decomposed or evaporated to be removed. There is no particular limitation as long as the conditions are suitable for. If it is difficult to decompose the inclusions by electron beam irradiation and remove them by evaporation, once they have been cooled and taken out, the inclusions aggregated on the metal surface may be removed by mechanical means such as a drilling machine or a sander. ..
【００１１】次に、このようにして予め介在物を除いた
同一組成の金属を浴として、この金属浴とともに目的金
属を電子ビーム溶解する。この際の溶解方法の例を図
１、図２および図３により説明する。Next, using the metal having the same composition with the inclusions removed in advance as a bath, the target metal is electron-beam melted together with the metal bath. An example of the melting method at this time will be described with reference to FIGS. 1, 2 and 3.
【００１２】図１は、ドリップ溶解に対して本発明方法
を適用した場合の一例である。水冷銅ハース４上に介在
物を含まない金属浴３を形成し、溶解した後、上方の目
的金属１に電子ビーム２を照射し、目的金属を液滴とし
て溶解した金属浴に滴下する方法である。金属液滴を、
固体状態の金属浴に滴下した後、金属浴とともに再溶解
を行ってもよい。FIG. 1 shows an example in which the method of the present invention is applied to drip melting. By forming a metal bath 3 containing no inclusions on the water-cooled copper hearth 4 and melting it, the upper target metal 1 is irradiated with an electron beam 2, and the target metal 1 is dropped as a droplet into the melted metal bath. is there. Metal droplets,
After dropping in the solid state metal bath, re-dissolution may be performed together with the metal bath.
【００１３】図２および図３は、それぞれボタン溶解に
本発明方法を適用した場合の例である。図２に示す方法
では、水冷銅ハース上に介在物を含まない金属浴３を形
成した後、その上に金属試料１を置き、電子ビームによ
り溶解させる。この場合、電子ビームを浴の方に照射す
ることによって、試料を直接加熱することなく試料を溶
解することができる。図３はその変形例を示し、浴を溶
製するための溶解により表面に凝集した介在物をボール
盤で削り取り、その削られた部分に試料を埋め込む。こ
の場合も試料への電子ビームの直接照射は避け、浴を使
って試料を溶かし込むような形にする方法が望ましい。
このような方法を取ることにより、試料の過熱を防ぐこ
とができる。FIG. 2 and FIG. 3 are examples when the method of the present invention is applied to button melting. In the method shown in FIG. 2, after forming a metal bath 3 containing no inclusions on a water-cooled copper hearth, a metal sample 1 is placed on the metal bath 3 and melted by an electron beam. In this case, by irradiating the bath with the electron beam, the sample can be dissolved without directly heating the sample. FIG. 3 shows a modified example thereof, in which inclusions agglomerated on the surface by melting for melting the bath are scraped off by a drilling machine, and the sample is embedded in the scraped part. Also in this case, it is desirable to avoid direct irradiation of the sample with the electron beam, and to use a bath to melt the sample.
By taking such a method, it is possible to prevent the sample from overheating.
【００１４】浴金属と目的金属との配合比率は、特に限
定されないが、浴金属の効果を十分に発揮させるには、
目的金属に対して重量換算で等量ないし10倍が適当であ
る。また、ステンレス鋼のように蒸気圧の高い元素 (こ
の場合はクロム) を含むような金属の電子ビーム溶解で
は、浴を溶製する際の金属の蒸発による組成のズレを考
慮する。例えば、電子ビームによる介在物の分解除去は
避けて、目的金属の溶解時の出力の 1.2倍程度で溶解
し、浮上した介在物は機械的に取り除くというようなこ
とである。光学顕微鏡、走査電子顕微鏡、ＥＰＭＡ（Ｘ
線マイクロアナライザ）等の既存の表面解析方法により
介在物を分析することができる。The mixing ratio of the bath metal and the target metal is not particularly limited, but in order to fully exert the effect of the bath metal,
Equivalent to 10 times by weight equivalent to the target metal is suitable. Further, in electron beam melting of a metal such as stainless steel containing a high vapor pressure element (chromium in this case), a compositional deviation due to evaporation of the metal during melting of the bath is taken into consideration. For example, avoiding decomposition and removal of inclusions by an electron beam, the target metal is melted at about 1.2 times the output at the time of melting, and the floating inclusions are mechanically removed. Optical microscope, scanning electron microscope, EPMA (X
Inclusions can be analyzed by an existing surface analysis method such as a line microanalyzer).
【００１５】本発明により、予め介在物を除去した同一
組成の金属浴を使用すると、次のような利点がある。 １．目的金属が浴金属を介して水冷銅と接触しているた
め、目的金属を完全に溶解することができる。従って、
目的金属中の非金属介在物全量を浮上させることが可能
である。 ２. 浴金属および目的金属の形状を工夫すれば介在物の
浮上距離を短くすることができるため、短時間で介在物
の浮上が可能である。According to the present invention, the use of a metal bath of the same composition from which inclusions have been removed beforehand has the following advantages. 1. Since the target metal is in contact with the water-cooled copper via the bath metal, the target metal can be completely dissolved. Therefore,
It is possible to float all the non-metallic inclusions in the target metal. 2. The levitation distance of inclusions can be shortened by devising the shapes of the bath metal and the target metal, so that the inclusions can float in a short time.
【００１６】３. 浴金属を先に溶解し、その後目的金属
を浴に溶かし込む形となるように、目的金属および浴金
属の試料形状を工夫し電子ビームの照射オシレーション
を設定すれば、目的金属に電子ビームを直接照射するこ
となく溶解できる。その結果、直接目的金属に電子ビー
ムを直接照射した場合に起こり得る、介在物の熱分解も
しくは蒸発を防ぐことができる。 ４. 浴金属と目的金属の間に物理的および化学的な差が
ないので、浴金属からの介在物への影響が少ない。3. If the electron beam irradiation oscillation is set by devising the sample shape of the target metal and the bath metal so that the bath metal is first melted and then the target metal is melted in the bath. It can be melted without direct irradiation of metal with electron beam. As a result, it is possible to prevent thermal decomposition or evaporation of inclusions that may occur when the target metal is directly irradiated with the electron beam. 4. Since there is no physical or chemical difference between the bath metal and the target metal, the influence of the bath metal on inclusions is small.
【００１７】[0017]
【参考例】浴として使用する金属からの非金属介在物の
除去過程を見るために、ニッケル−クロム鋼 (C:0.12〜
0.18％、Mn:0.35 〜0.65％、Ni:3.00 〜3.50％、Cr:0.7
0〜1.00％) を用い、浴を溶製するための電子ビーム溶
解条件で繰り返し溶解を行った。図４は、３種類の異な
るロットのニッケル−クロム鋼約300gについて、電子ビ
ーム溶解と介在物の機械的除去を５回繰り返した時に浮
上した介在物量の変化を示したものである。介在物の除
去は、浮上した介在物量を測定した後、ボール盤で表面
を約３ｇ程度削ることにより行った。介在物量は、表面
に浮上した介在物の投影面積で表す。[Reference example] In order to see the removal process of non-metallic inclusions from the metal used as a bath, nickel-chromium steel (C: 0.12 ~
0.18%, Mn: 0.35 to 0.65%, Ni: 3.00 to 3.50%, Cr: 0.7
(0 to 1.00%), and repeated melting was performed under the electron beam melting conditions for melting the bath. FIG. 4 shows changes in the amount of inclusions that floated when electron beam melting and mechanical removal of inclusions were repeated 5 times for about 300 g of nickel-chromium steel of three different lots. The inclusions were removed by measuring the amount of the floating inclusions and then scraping the surface by about 3 g with a drilling machine. The amount of inclusions is represented by the projected area of the inclusions floating on the surface.
【００１８】図４からわかるように、いずれのロットで
も１回目で介在物の大部分を除去することができ、２回
目以降の浮上介在物量は、１回目の１％未満である。従
って、介在物除去を１回行った金属を浴として使用して
も、目的とする試料重量を適切に選べば、試料中の介在
物を十分正確に測定し得ると考えられる。As can be seen from FIG. 4, most of the inclusions can be removed in the first time in any lot, and the amount of floating inclusions in the second time and thereafter is less than 1% in the first time. Therefore, it is considered that the inclusions in the sample can be measured sufficiently accurately even if the metal having the inclusions removed once is used as the bath by appropriately selecting the target sample weight.
【００１９】[0019]
【実施例１】目的金属および金属浴として、上記参考例
に記載のニッケル−クロム鋼を用いて、本発明の電子ビ
ーム溶解法による介在物の浮上分離を行った。金属浴
は、予め電子ビーム溶解で介在物を浮上させた後、ボー
ル盤で介在物を削り取ったものを用いた。目的金属試料
はロット１、２および３を用い、重量は各ロットとも２
ｇ、５ｇおよび10ｇとし、金属浴の量は約 100ｇとし
た。溶解方法は、図２に示したボタン溶解方式を用い、
電子ビームは浴に照射した。電子ビーム溶解により浮上
した介在物量を測定した結果を図５に示す。浮上介在物
の量は、目的金属１ｇ当りの浮上介在物の面積 (mm2/g)
で表す。図５は浮上介在物の量を縦軸に、試料重量を縦
軸に取っている。Example 1 The nickel-chromium steel described in the above reference example was used as the target metal and metal bath, and the inclusions were floated and separated by the electron beam melting method of the present invention. The metal bath used was one in which the inclusions were previously floated by electron beam melting and then the inclusions were scraped off with a drilling machine. The target metal samples used were lots 1, 2 and 3, and the weight was 2 for each lot.
g, 5 g and 10 g, and the amount of metal bath was about 100 g. The dissolution method uses the button dissolution method shown in FIG.
The bath was irradiated with an electron beam. The results of measuring the amount of inclusions floating by electron beam melting are shown in FIG. The amount of floating inclusions is the area of the floating inclusions per mm of target metal (mm 2 / g)
It is represented by. In FIG. 5, the vertical axis represents the amount of floating inclusions and the vertical axis represents the sample weight.
【００２０】この結果から明らかなように、各ロットの
介在物量は試料重量にかかわらずほぼ一定の値を得られ
る。従って、同一組成の金属浴を用いる電子ビーム溶解
によって安定した介在物の浮上を得ることができる。As is clear from this result, the amount of inclusions in each lot can be almost constant regardless of the sample weight. Therefore, stable floating of inclusions can be obtained by electron beam melting using a metal bath of the same composition.
【００２１】[0021]
【実施例２】実施例１と同様にして、図２に示したよう
な試料配置で、クロム鋼(C:0.13 〜0.18％、Mn:0.60 〜
0.85％、Cr:0.90 〜1.20％) 中の非金属介在物を評価し
た。金属試料10ｇ、金属浴約 100ｇの場合の介在物量を
測定し、その結果を表１に示す。Example 2 In the same manner as in Example 1, with the sample arrangement as shown in FIG. 2, chromium steel (C: 0.13 to 0.18%, Mn: 0.60 to
The non-metallic inclusions in 0.85%, Cr: 0.90 to 1.20%) were evaluated. The amount of inclusions was measured for a metal sample of 10 g and a metal bath of about 100 g, and the results are shown in Table 1.
【００２２】[0022]
【比較例】実施例２と同一条件下で、浴を使用しなかっ
た場合の浮上介在物量を測定した。その結果を表１に示
す。表１から明らかなように、浴を使用した場合は浴を
使用しない場合に比べて浮上する介在物量は増加し、か
つ、ばらつきを示す標準偏差は小さくなっていることが
わかる。Comparative Example Under the same conditions as in Example 2, the amount of floating inclusions was measured when the bath was not used. The results are shown in Table 1. As is clear from Table 1, the amount of inclusions floating when the bath is used is larger than that when the bath is not used, and the standard deviation showing variations is smaller.
【００２３】[0023]
【表１】 [Table 1]
【００２４】[0024]
【発明の効果】本発明によれば、電子ビーム溶解により
金属試料中の介在物を浮上分離させる際に、 １. 非金属介在物の全量の速やかな浮上、分離が可能と
なる、 ２. 目的金属と浴金属の配置や溶解方法を工夫すること
によって、電子ビームの直接照射を防ぎ、介在物の熱分
解または蒸発を抑制することができる。従って、本発明
の介在物分離方法を利用すれば、目的とする金属中の非
金属介在物の分析を、従来法に比べより正確に高い信頼
性で行うことができ、金属の評価に有用な方法である。According to the present invention, when the inclusions in a metal sample are floated and separated by electron beam melting, 1. It is possible to quickly float and separate all the non-metallic inclusions. By arranging the arrangement of the metal and the bath metal and devising the melting method, direct irradiation of the electron beam can be prevented, and thermal decomposition or evaporation of inclusions can be suppressed. Therefore, by using the method for separating inclusions of the present invention, it is possible to analyze the non-metallic inclusions in the target metal more accurately and with higher reliability than the conventional method, which is useful for the evaluation of metals. Is the way.
【図面の簡単な説明】[Brief description of drawings]
【図１】本発明方法をドリップ溶解に適用した例を示す
概念図である。FIG. 1 is a conceptual diagram showing an example in which the method of the present invention is applied to drip melting.
【図２】本発明方法をボタン溶解に適用した例を示す概
念図である。FIG. 2 is a conceptual diagram showing an example in which the method of the present invention is applied to button melting.
【図３】本発明方法をボタン溶解に適用した別の例を示
す概念図である。FIG. 3 is a conceptual diagram showing another example in which the method of the present invention is applied to button melting.
【図４】浴を溶製するためにニッケル−クロム鋼を繰り
返し電子ビーム溶解と介在物除去を行ったときの介在物
量変化を示す図である。FIG. 4 is a diagram showing changes in the amount of inclusions when nickel-chromium steel is repeatedly subjected to electron beam melting and inclusions removal to melt a bath.
【図５】同一母材を金属浴として使用した場合の電子ビ
ーム溶解による試料重量に対する浮上介在物量の変化を
示す図である。FIG. 5 is a diagram showing a change in the amount of floating inclusions with respect to a sample weight due to electron beam melting when the same base material is used as a metal bath.
1 試料 2 電子ビーム 3 金属浴 4 水冷銅ハース 1 Sample 2 Electron beam 3 Metal bath 4 Water-cooled copper hearth
───────────────────────────────────────────────────── フロントページの続き (72)発明者 畠山 耕一 尼崎市東向島西之町１番地 住友金属工業 株式会社鋼管製造所内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Koichi Hatakeyama 1 Nishinocho, Higashimukaijima, Amagasaki City Sumitomo Metal Industries, Ltd. Steel Pipe Works
Claims (3)
属介在物を浮上分離させる方法おいて、目的金属と実質
的に同一組成を有し、非金属介在物を予め除去した金属
を浴材として用い、目的金属を浴材と共に電子ビームに
より溶解することを特徴とする、目的金属中の非金属介
在物を分解することなく浮上分離させる方法。1. A method of floating and separating non-metallic inclusions in a target metal by electron beam melting, wherein a metal having substantially the same composition as that of the target metal and having non-metal inclusions previously removed is used as a bath material. A method of floating and separating a non-metallic inclusion in a target metal without decomposing, wherein the target metal is dissolved by an electron beam together with a bath material.
除去を、該金属を電子ビームにより溶解して非金属介在
物を浮上分離させた後、分離した介在物を分解、蒸発お
よび／または機械的手段で除去することにより行う請求
項１記載の方法。2. A non-metallic inclusion of a metal used as a bath material is removed by melting the metal by an electron beam to float and separate the non-metallic inclusion, and then the separated inclusion is decomposed, evaporated and / or The method according to claim 1, wherein the method is performed by removing by mechanical means.
目的金属中の非金属介在物を分析する方法。3. Using the method according to claim 1 or 2,
A method for analyzing non-metallic inclusions in a target metal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4006931A JPH05195099A (en) | 1992-01-17 | 1992-01-17 | Method for floating up and separating inclusion in metal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4006931A JPH05195099A (en) | 1992-01-17 | 1992-01-17 | Method for floating up and separating inclusion in metal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05195099A true JPH05195099A (en) | 1993-08-03 |
Family
ID=11651997
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4006931A Withdrawn JPH05195099A (en) | 1992-01-17 | 1992-01-17 | Method for floating up and separating inclusion in metal |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05195099A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112095019A (en) * | 2020-08-11 | 2020-12-18 | 大连理工大学 | Method for removing inclusions in high-temperature alloy through electron beam overheating dissolution |
| CN112210673A (en) * | 2020-08-11 | 2021-01-12 | 大连理工大学 | Method for removing inclusions in high-temperature alloy through electron beam surface pyrolysis |
| CN112746183A (en) * | 2020-12-28 | 2021-05-04 | 大连理工大学 | Method for synchronously removing high-density impurities and low-density impurities in high-temperature alloy |
-
1992
- 1992-01-17 JP JP4006931A patent/JPH05195099A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112095019A (en) * | 2020-08-11 | 2020-12-18 | 大连理工大学 | Method for removing inclusions in high-temperature alloy through electron beam overheating dissolution |
| CN112210673A (en) * | 2020-08-11 | 2021-01-12 | 大连理工大学 | Method for removing inclusions in high-temperature alloy through electron beam surface pyrolysis |
| CN112746183A (en) * | 2020-12-28 | 2021-05-04 | 大连理工大学 | Method for synchronously removing high-density impurities and low-density impurities in high-temperature alloy |
| CN112746183B (en) * | 2020-12-28 | 2022-02-18 | 大连理工大学 | Method for synchronously removing high-density impurities and low-density impurities in high-temperature alloy |
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