JPS6319797Y2 - - Google Patents
Info
- Publication number
- JPS6319797Y2 JPS6319797Y2 JP11609281U JP11609281U JPS6319797Y2 JP S6319797 Y2 JPS6319797 Y2 JP S6319797Y2 JP 11609281 U JP11609281 U JP 11609281U JP 11609281 U JP11609281 U JP 11609281U JP S6319797 Y2 JPS6319797 Y2 JP S6319797Y2
- Authority
- JP
- Japan
- Prior art keywords
- tube
- molten metal
- main pipe
- sampling
- stopper
- 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
Links
- 239000002184 metal Substances 0.000 claims description 30
- 229910052751 metal Inorganic materials 0.000 claims description 30
- 238000005070 sampling Methods 0.000 claims description 16
- 239000011521 glass Substances 0.000 claims description 9
- 230000001914 calming effect Effects 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 2
- 239000000523 sample Substances 0.000 description 9
- 238000005204 segregation Methods 0.000 description 7
- 229910000831 Steel Inorganic materials 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 238000004458 analytical method Methods 0.000 description 5
- 239000007789 gas Substances 0.000 description 4
- 238000004868 gas analysis Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000000538 analytical sample Substances 0.000 description 2
- 238000007670 refining Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 206010039897 Sedation Diseases 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 230000036280 sedation Effects 0.000 description 1
Landscapes
- Investigating And Analyzing Materials By Characteristic Methods (AREA)
- Sampling And Sample Adjustment (AREA)
Description
本考案は、鉄鋼業その他金属精錬業に於いて、
溶融金属の分析用試料、特に溶存ガス分析用試料
を採取するための溶融金属採取管に関するもので
ある。
転炉、電気炉などの精錬炉に於ける溶鋼中の窒
素、酸素、水素などの溶存ガスの含有量は、製品
の品質を決定する上で極めて重要な要因であつ
て、その量を正確に測定する必要がある。然しな
がら、この測定を正確に行なうのはなかなか困難
であり、その原因は試料のサンプリングの難しさ
に起因する。測定に正確性を期すためには、溶融
金属を外気に曝すことなく炉内から直接に採取す
ることが望ましく、しかも偏析も、所謂巣と呼ば
れる空胴もない試料を得ることが必要である。然
しこのことはなかなは至難であつて、従来は殆ど
満足すべき採取装置が見当らなかつた。
例えば真空吸引装置の先端に石英ガラス管を接
続して溶鋼を吸引採取することも行なわれるが、
実際には一部分の溶融金属が急激にガラス管内に
侵入して、管壁に凝着したりするために、偏析や
巣が生じて良質のガス分析試料を確実に得ること
ができない問題点がある。従つて、その試料をそ
のまま使用すればその分析値は偏析による極めて
偏つた値や、巣の中の気体ガスの影響をそのまま
受け、溶鋼成分の代表値とはおよそかけ離れたデ
ータを示すことになる。
本考案の目的は、前述の問題点を払拭し、溶存
ガスの正確な測定値が得られる金属試料を採取す
るための溶融金属採取管を提供することにあり、
その内容は、耐熱性ガラス管から成る主管に対
し、その先端の採取口を直角方向に向けると共
に、採取口の突き当り位置の主管の下端部には袋
状の鎮静部を設け、主管の上端部に金属又はガラ
ス材から成る溶融金属に対するストツパを掛止
し、上端部側から真空吸引して溶融金属をガラス
管内に採取することを特徴とするものである。
本考案を図示の実施例に基づいて詳細に説明す
る。
第１図に於いて、１は採取管であり、２はこの
採取管１と真空吸引装置とを連結するための、採
取管１の上部に取り付けた紙管である。採取管１
は断面円形の耐熱性の例えば石英ガラス管から成
り、主管３に対しその先端部の短管状の採取口４
が直角方向に向けられている。採取口４は主管３
の径よりも稍細めに形成されており、その突き当
り部の主管３の下端部には袋状の鎮静部５が設け
られている。又、主管３の上端部６には、例えば
鉄、銅などの金属或いはガラスから成る溶融金属
のストツパ７が設けられており、このストツパ７
は例えば円柱状に形成され、その上下部に於ける
主管３を稍凹ませることにより主管３の上端部６
に掛止されている。ストツパ７は主管３の内径に
対して径が十分に小さいので、主管３内の空気は
ストツパ７の周囲を通過して真空吸引装置で吸引
されるようになつている。主管３の寸法は例えば
長さ約110mm、内径８mmであり、採取口４の内径
は６mm、鎮静部５は径10mm、奥行10mm程度の短円
筒部である。
従つて、この採取管１を紙管２を介して真空吸
引装置の図示しない吸引管に連結し、採取管１内
を減圧しながら採取管１を溶融金属中に浸漬する
と、溶融金属が採取口４から主管３内に流入する
ことになる。然しながらその際に、採取口４の突
き当り位置に鎮静部５を設けられているために溶
融金属はこの鎮静部５で流れが減速され、更には
溶融金属は徐々に主管３内に充満するために、偏
析や巣の少ない良質の分析試料が得られる。又、
溶融金属がストツパ７に達すると、ストツパ７は
溶融金属に対する大きな障害となると共に、その
付近に於いては既に溶融金属は熱量を奪われ十分
な流動性を失つているために凝固し易く、溶融金
属の流入はストツパ７に於いてほぼ停止される。
その頃を見計つて採取管１を引き上げ、主管３を
急冷して第２図に示すような溶融金属が凝固した
分析試料８が得られる。
同一溶鋼から得た６本の分析試料８を基に、第
３図に示すようにＡ部、Ｂ部、Ｃ部の３個所の試
料を比較したところ第１表のような結果が得られ
た。
This invention is useful in the steel industry and other metal refining industries.
The present invention relates to a molten metal collection tube for collecting samples for analysis of molten metal, particularly samples for dissolved gas analysis. The content of dissolved gases such as nitrogen, oxygen, and hydrogen in molten steel in refining furnaces such as converters and electric furnaces is an extremely important factor in determining product quality. need to be measured. However, it is quite difficult to perform this measurement accurately, and the reason for this is the difficulty in sampling the sample. In order to ensure accuracy in measurements, it is desirable to sample the molten metal directly from inside the furnace without exposing it to the outside air, and it is also necessary to obtain a sample without segregation or cavities called cavities. However, this is extremely difficult, and until now, no satisfactory sampling device has been found. For example, molten steel can be collected by suction by connecting a quartz glass tube to the tip of a vacuum suction device.
In reality, a portion of the molten metal suddenly enters the glass tube and adheres to the tube wall, causing segregation and cavities, making it impossible to reliably obtain a high-quality gas analysis sample. . Therefore, if the sample is used as it is, the analytical value will be extremely biased due to segregation and will be affected by the gas in the cavity, and will show data that is far from the representative value of the molten steel composition. . The purpose of the present invention is to eliminate the above-mentioned problems and provide a molten metal sampling tube for collecting metal samples from which accurate measurements of dissolved gas can be obtained.
The contents of the main tube are made of a heat-resistant glass tube, with the sampling port at the tip facing in a right angle direction, and a bag-shaped calming part is provided at the bottom end of the main tube at the end of the sampling port, and a bag-shaped calming part is installed at the top end of the main tube. A stopper for the molten metal made of metal or glass material is hooked to the tube, and the molten metal is collected into the glass tube by vacuum suction from the upper end side. The present invention will be explained in detail based on illustrated embodiments. In FIG. 1, 1 is a collection tube, and 2 is a paper tube attached to the top of the collection tube 1 for connecting the collection tube 1 and a vacuum suction device. Collection tube 1
is made of a heat-resistant, for example, quartz glass tube with a circular cross section, and a short tube-shaped collection port 4 at the tip of the main tube 3.
is oriented at right angles. Collection port 4 is main pipe 3
The diameter of the main pipe 3 is slightly narrower than that of the main pipe 3, and a bag-shaped calming part 5 is provided at the lower end of the main pipe 3 at the abutting part. Further, a stopper 7 made of molten metal made of metal such as iron, copper, or glass is provided at the upper end 6 of the main pipe 3.
For example, the upper end 6 of the main pipe 3 is formed by slightly recessing the main pipe 3 at the upper and lower parts.
It is hung on. Since the diameter of the stopper 7 is sufficiently smaller than the inner diameter of the main pipe 3, the air inside the main pipe 3 passes around the stopper 7 and is sucked by the vacuum suction device. The dimensions of the main pipe 3 are, for example, about 110 mm in length and 8 mm in inner diameter, the inner diameter of the sampling port 4 is 6 mm, and the calming part 5 is a short cylindrical part with a diameter of about 10 mm and a depth of about 10 mm. Therefore, when this sampling tube 1 is connected to a suction tube (not shown) of a vacuum suction device via a paper tube 2, and the sampling tube 1 is immersed in molten metal while reducing the pressure inside the sampling tube 1, the molten metal flows into the sampling port. 4 into the main pipe 3. However, at this time, the flow of the molten metal is slowed down in the calming part 5 because the calming part 5 is provided at the end position of the sampling port 4, and furthermore, the molten metal gradually fills the main pipe 3. , high-quality analytical samples with few segregations and nests can be obtained. or,
When the molten metal reaches the stopper 7, the stopper 7 becomes a big obstacle to the molten metal, and the molten metal in the vicinity has already lost its heat and has lost sufficient fluidity, so it is easy to solidify and the molten metal is The inflow of metal is substantially stopped at the stopper 7.
At around this time, the collection tube 1 is pulled up and the main tube 3 is rapidly cooled to obtain an analysis sample 8 in which the molten metal is solidified as shown in FIG. Based on six analysis samples 8 obtained from the same molten steel, we compared the samples at three locations, A, B, and C as shown in Figure 3, and obtained the results shown in Table 1. .
【表】【table】
【表】
何れの試料も偏析のない安定な数値が得られて
いるが、特にＢ部の試料が最も健全な結果を示し
ている。尚、この採取管１では更に多数の本数の
溶融金属を採取したが、何れの試料に於いても偏
析や巣は殆ど見受けられなかつた。
以上説明したように本考案に係る溶融金属試料
採取管は、真空吸引装置との併用により、溶融金
属を採取することができ、従来の採取装置では不
可能であつた偏析や巣の極めて少ないガス分析試
料を採取することができる。従つて正確な溶存ガ
ス分析試料を得ることが可能となり、鉄鋼製品の
品質管理に大いに寄与することになる。[Table] Stable values with no segregation were obtained for all the samples, but the sample in section B in particular showed the most sound results. Although a larger number of molten metals were sampled using this sampling tube 1, almost no segregation or voids were observed in any of the samples. As explained above, the molten metal sampling tube according to the present invention can collect molten metal when used in combination with a vacuum suction device, and can collect gas with extremely little segregation and voids, which was impossible with conventional sampling devices. Analytical samples can be collected. Therefore, it becomes possible to obtain accurate dissolved gas analysis samples, which greatly contributes to quality control of steel products.
図面は本考案に係る溶融金属採取管の一実施例
を示すものであり、第１図はその縦断面図、第２
図は採取した試料の斜視図、第３図は分析部分を
示す説明図である。
符号１は採取管、２は紙管、３は主管、４は採
取口、５は鎮静部、６は上端部、７はストツパ、
８は分析試料である。
The drawings show an embodiment of the molten metal collection pipe according to the present invention, and FIG. 1 is a longitudinal sectional view thereof, and FIG.
The figure is a perspective view of the collected sample, and FIG. 3 is an explanatory diagram showing the analysis part. 1 is the collection tube, 2 is the paper tube, 3 is the main pipe, 4 is the collection port, 5 is the sedation part, 6 is the upper end, 7 is the stopper,
8 is an analysis sample.
Claims (1)
の採取口を直角方向に向けると共に、採取口の突
き当り位置の主管の下端部には袋状の鎮静部を設
け、主管の上端部に金属又はガラス材から成る溶
融金属に対するストツパを掛止し、上端部側から
真空吸引して溶融金属をガラス管内に採取するこ
とを特徴とする溶融金属採取管。 The main pipe is made of heat-resistant glass, and the sampling port at its tip is oriented at right angles, and a bag-shaped calming part is provided at the bottom end of the main pipe at the end of the sampling port, and a metal or glass tube is attached to the top end of the main pipe. 1. A molten metal collection tube, characterized in that a stopper for molten metal made of a glass material is hooked, and the molten metal is collected into a glass tube by vacuum suction from the upper end side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11609281U JPS5821855U (en) | 1981-08-03 | 1981-08-03 | molten metal sampling tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11609281U JPS5821855U (en) | 1981-08-03 | 1981-08-03 | molten metal sampling tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5821855U JPS5821855U (en) | 1983-02-10 |
| JPS6319797Y2 true JPS6319797Y2 (en) | 1988-06-02 |
Family
ID=29910333
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11609281U Granted JPS5821855U (en) | 1981-08-03 | 1981-08-03 | molten metal sampling tube |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5821855U (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62126407U (en) * | 1986-01-31 | 1987-08-11 | ||
| JP2587675Y2 (en) * | 1993-12-21 | 1998-12-24 | 株式会社竹中工務店 | wall |
-
1981
- 1981-08-03 JP JP11609281U patent/JPS5821855U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5821855U (en) | 1983-02-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS62229058A (en) | Molten-metal gas analyzer | |
| JPS6319797Y2 (en) | ||
| US4428245A (en) | Apparatus for sampling molten metal | |
| KR101318831B1 (en) | Complex probe gathering sample of molten metal and slag simultaneously | |
| US5014561A (en) | Method and apparatus for obtaining accurate sample | |
| JPS6213007Y2 (en) | ||
| JPS6213006Y2 (en) | ||
| US6200520B1 (en) | Sampling vessel for obtaining a cooling curve of molten metals | |
| JPS6041519Y2 (en) | sampling probe | |
| JPS6322527Y2 (en) | ||
| GB1350248A (en) | Method and apparatus for the determination of the oxygen content of metal melts | |
| JPS5910621Y2 (en) | Molten slag sample collection device | |
| JPH01213570A (en) | Method and apparatus for analyzing hydrogen in molten steel | |
| DE7405180U (en) | Device for sampling metal, in particular iron, melts | |
| CN214373560U (en) | Ladle of LF stove and continuous casting tundish molten steel sampling device | |
| CN87208787U (en) | Multifunctional gaging head for melting steel | |
| JPH07306196A (en) | Mold for sampling molten metal | |
| CN116067835A (en) | Blast furnace slag fluidity measuring device and method | |
| JPH034935Y2 (en) | ||
| JP2953903B2 (en) | Probe for molten metal | |
| JP2000249680A (en) | Slag degree-of-oxidation measurement probe | |
| KR101779987B1 (en) | Sampling device and complex probe including the same | |
| JPH0792158A (en) | Sampler for molten metal | |
| JPH0438292Y2 (en) | ||
| JPH0747736Y2 (en) | Composite probe for molten metal |