JPH0413820A - Method for melting metal utilizing superheated vapor and metal melting furnace using this method - Google Patents
Method for melting metal utilizing superheated vapor and metal melting furnace using this methodInfo
- Publication number
- JPH0413820A JPH0413820A JP11512090A JP11512090A JPH0413820A JP H0413820 A JPH0413820 A JP H0413820A JP 11512090 A JP11512090 A JP 11512090A JP 11512090 A JP11512090 A JP 11512090A JP H0413820 A JPH0413820 A JP H0413820A
- Authority
- JP
- Japan
- Prior art keywords
- metal
- superheated steam
- melting
- melting furnace
- boiler
- 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
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 67
- 239000002184 metal Substances 0.000 title claims abstract description 67
- 238000002844 melting Methods 0.000 title claims abstract description 51
- 230000008018 melting Effects 0.000 title claims abstract description 51
- 238000000034 method Methods 0.000 title claims abstract description 14
- 239000002893 slag Substances 0.000 claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 23
- 229910001868 water Inorganic materials 0.000 claims description 23
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 15
- 239000001301 oxygen Substances 0.000 claims description 15
- 229910052760 oxygen Inorganic materials 0.000 claims description 15
- 239000007789 gas Substances 0.000 claims description 13
- 239000012528 membrane Substances 0.000 claims description 7
- 238000000926 separation method Methods 0.000 claims description 7
- 150000002739 metals Chemical class 0.000 claims description 6
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims description 4
- 229910052796 boron Inorganic materials 0.000 claims description 4
- 229910052604 silicate mineral Inorganic materials 0.000 claims description 4
- 229910052613 tourmaline Inorganic materials 0.000 claims description 3
- 229940070527 tourmaline Drugs 0.000 claims description 3
- 239000011032 tourmaline Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 230000002411 adverse Effects 0.000 abstract description 2
- 229910045601 alloy Inorganic materials 0.000 abstract description 2
- 239000000956 alloy Substances 0.000 abstract description 2
- 230000005611 electricity Effects 0.000 abstract description 2
- 238000007664 blowing Methods 0.000 abstract 4
- 238000007599 discharging Methods 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 description 4
- 229920006395 saturated elastomer Polymers 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910021645 metal ion Inorganic materials 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910000906 Bronze Inorganic materials 0.000 description 1
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 description 1
- 239000005751 Copper oxide Substances 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 238000010793 Steam injection (oil industry) Methods 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- RIRXDDRGHVUXNJ-UHFFFAOYSA-N [Cu].[P] Chemical compound [Cu].[P] RIRXDDRGHVUXNJ-UHFFFAOYSA-N 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000010974 bronze Substances 0.000 description 1
- 229910000431 copper oxide Inorganic materials 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- -1 ferrous metals Chemical class 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、低圧高温過熱蒸気を利用し、大気圧下で空気
の希薄な状態または皆無な過熱蒸気によって金属を省エ
ネルギーのもとに溶解するものである。[Detailed Description of the Invention] (Industrial Application Field) The present invention utilizes low-pressure, high-temperature superheated steam to melt metals under atmospheric pressure in a diluted state of air or with no superheated steam while saving energy. It is something.
（従来の技術）
従来、金属の溶解にあたっては、スクレナ炉、ルツボ類
、急速溶解炉などにおいて、インゴットから電気または
ガスバーナーなどで溶解していたものである。(Prior Art) Conventionally, metals have been melted from ingots using electric or gas burners in screener furnaces, crucibles, rapid melting furnaces, and the like.
こうしたプロセスでは、電気量の消耗もはげしく、溶解
コストの上昇に結びつき、しかも製品の不良も多くみら
れるようになった。This process consumes a lot of electricity, leading to increased melting costs, and moreover, there are many defective products.
（発明が解決しようとする問題点）
従来知られた方法では、エネルギーロスが大きく、不良
品の発生が多く、作業時間が長くなるなどの欠点があっ
たことから、本発明では溶融温度の低減による材質の向
上と、省エネルギ、特に金属及び非鉄金属等の溶融作業
時間の短縮による生産性向上を図ることを目的とするも
のである。(Problems to be Solved by the Invention) Conventionally known methods had disadvantages such as large energy loss, high number of defective products, and long working time, so the present invention aims to reduce the melting temperature. The purpose of this project is to improve the quality of materials, save energy, and improve productivity by shortening the time required for melting metals, non-ferrous metals, etc.
（課題を解決するための手段）
本発明は金属の溶解に過熱蒸気を利用するもので、水源
に硼素を含む珪酸塩鉱物を投入し、脱酸素のプロセスを
加えたことを特徴とするもので次のような構成になるも
のである。(Means for Solving the Problems) The present invention utilizes superheated steam to melt metal, and is characterized in that a silicate mineral containing boron is added to the water source and a deoxidation process is added. The structure is as follows.
ボイラー６で発生した過熱蒸気を、金属溶解炉２に注入
する前に、電気またはガスバーナ７などにより金属溶解
炉２中のインゴットを予熱し、金属溶解炉２に連続する
ボイラー６から低圧高温過熱蒸気を、金属溶解炉２に注
入して金属を溶解する、過熱蒸気を利用する金属の溶解
方法である。Before the superheated steam generated in the boiler 6 is injected into the metal melting furnace 2, the ingot in the metal melting furnace 2 is preheated by an electric or gas burner 7, etc., and the low pressure high temperature superheated steam is sent from the boiler 6 connected to the metal melting furnace 2. This is a metal melting method that utilizes superheated steam, in which the metal is injected into the metal melting furnace 2 to melt the metal.
しかも、水源に硼素を含む珪酸塩鉱物を投入し、脱酸素
のプロセスを加えるものである。In addition, silicate minerals containing boron are added to the water source to perform an oxygen removal process.
また脱酸素のプロセスを加えるものである。It also adds a deoxidizing process.
それに用いる金属溶解炉は、インゴットを挿入する受入
口１を上部に持つ金属溶解炉２の下端に溶湯口３を持ち
、下端に近い中間部に金属滓排出口４を設け、その上下
に開閉自在の低圧高温過熱蒸気吹込口５を数カ所併設し
、該低圧高温過熱蒸気吹込口５はボイラーに直結してな
るものである。The metal melting furnace used for this purpose has a molten metal inlet 3 at the lower end of the metal melting furnace 2 which has an inlet 1 at the top for inserting the ingot, and a metal slag discharge port 4 at the middle part near the lower end, which can be opened and closed above and below. Several low-pressure, high-temperature superheated steam inlets 5 are provided, and the low-pressure, high-temperature superheated steam inlets 5 are directly connected to the boiler.
しかも、ボイラーには酸素分離膜を内蔵して脱酸素する
構造を持っている。Moreover, the boiler has a built-in oxygen separation membrane to remove oxygen.
また、ボイラー中の水を真空脱気する構造を持っている
。It also has a structure that vacuum degasses the water in the boiler.
（作 用）
銅合金の溶解にあたって注意しなければならないのは、
水素や酸素、水、蒸気などによる気泡巣が発生すること
である。(Function) Care must be taken when melting copper alloys.
This is the formation of bubble nests due to hydrogen, oxygen, water, steam, etc.
錫青銅の溶解にあたっては、溶解雰囲気を弱酸化性にす
るために酸化銅を添加し、出湯前に燐銅を加えて脱酸し
なければならない。When melting tin bronze, copper oxide must be added to make the melting atmosphere weakly oxidizing, and copper phosphorus must be added to deoxidize before tapping.
アルミニウム合金の溶解にあたっては、アルミニウムが
酸素との親和力が強いことからみずから酸化して溶湯を
脱酸させるが、溶湯の動揺を防がないといけない。When melting aluminum alloys, aluminum has a strong affinity for oxygen, so it oxidizes itself and deoxidizes the molten metal, but it is necessary to prevent the molten metal from stirring.
本発明は、予め金属溶解炉２中のインゴットを電気また
はガスバーナー７などによって予熱するため、過熱蒸気
の効率が向」ニし、空気の希薄な状態または皆無な過熱
蒸気による溶解のため、溶融金属または合金の溶解にあ
たっても品質に悪影響を及ぼさないものである。In the present invention, since the ingot in the metal melting furnace 2 is preheated by an electric or gas burner 7, etc., the efficiency of superheated steam is improved, and the ingot is melted by thin air or no superheated steam. Even when melting metals or alloys, the quality is not adversely affected.
低圧高温過熱蒸気吹込口は、金属溶解炉２の中間部に設
けた金属滓排出口４の上下に設けるものであるが、通常
は金属滓排出口４の下部に設けた過熱蒸気吹込口８によ
って過熱蒸気を吹込むものである。The low-pressure high-temperature superheated steam inlet is provided above and below the metal slag discharge port 4 provided in the middle part of the metal melting furnace 2, but usually, the superheated steam inlet 8 provided at the bottom of the metal slag discharge port 4 is used. It blows superheated steam into it.
金属滓が発生するまでは、金属滓排出口４の下部に設け
た過熱蒸気吹込口８によって過熱蒸気を吹込みながら溶
湯するものであるが、金属滓排出を必要とする際には、
金属滓排出口４の上部に設けた過熱蒸気吹込口５を利用
して、過熱蒸気を吹込みなから溶湯作業を続けるもので
ある。Until metal slag is generated, superheated steam is blown into the metal using the superheated steam inlet 8 provided at the bottom of the metal slag discharge port 4, but when the metal slag needs to be discharged,
A superheated steam inlet 5 provided above the metal slag discharge port 4 is used to continue molten metal work by injecting superheated steam.
また、溶湯を始める最初の頃には、２カ所の過熱蒸気吹
込口５．８を利用することによって溶湯時間を短縮す企
ようにしている。In addition, at the beginning of melting, an attempt is made to shorten the melting time by using two superheated steam inlets 5.8.
ボイラーで、水を一定圧力のもとで加熱すると、蒸気が
出はじめて沸騰しはじめるが、飽和水となり、さらに加
熱しつづけると水の一部は蒸気となり、温度は飽和温度
となり、圧力は飽和圧力のままで、しだいに水は蒸気に
変わり、水と蒸気との混合したしめり飽和蒸気となる。When water is heated in a boiler under a constant pressure, steam begins to come out and it begins to boil, but it becomes saturated water.If you continue to heat water, some of the water turns into steam, the temperature reaches the saturation temperature, and the pressure reaches the saturation pressure. As it is, the water gradually turns into steam and becomes damp saturated steam, which is a mixture of water and steam.
そして、液体が蒸発しつくして、全部が蒸気になるかわ
き飽和蒸気と呼ぶ蒸気ばかりになってしまう。Then, the liquid evaporates completely, leaving only vapor, which is called dry saturated vapor.
さらに、この状態から加熱を続けることによって、蒸気
は次第に飽和温度以上の高温となるとともに、膨張して
容積は増大し、過熱蒸気となるものである。Furthermore, by continuing to heat from this state, the steam gradually reaches a high temperature higher than the saturation temperature, expands, increases in volume, and becomes superheated steam.
本発明では、溶湯のため過熱蒸気を金属溶解炉２に除々
に注入するので、溶湯の温度がしだいに高まってくるも
のである。In the present invention, since superheated steam is gradually injected into the metal melting furnace 2 for molten metal, the temperature of the molten metal gradually increases.
しかも、電気またはガスボイラーなどだけで加熱したも
のとちがって、過熱蒸気が金属溶解炉２中を循環するの
で、溶湯がホモジナイズされて製品にムラがないという
特徴がみられるようになった。Moreover, unlike in the case of heating only with an electric or gas boiler, superheated steam circulates through the metal melting furnace 2, so the molten metal is homogenized and the product is uniform.
電気またはガスボイラーなどだけによる金属溶解の場合
は、加熱部分とインゴット投入部分とが明らかに断層が
出来、製品の品質に大きな差が出てくるという欠点もあ
った。When metal melting is performed using only an electric or gas boiler, there is a disadvantage that there is an obvious fault between the heating part and the ingot feeding part, resulting in a large difference in the quality of the product.
本発明では、金属溶解炉２の側面から過熱蒸気を注入す
ることによって、溶湯が炉中を循環し、渦流状となり、
温度上昇も均一になりながら、溶湯がホモジナイズされ
るという効果がみられるようになった。In the present invention, by injecting superheated steam from the side of the metal melting furnace 2, the molten metal circulates in the furnace and becomes a whirlpool.
The temperature rise became more uniform and the molten metal was homogenized.
そのためのエネルギー効率も上昇している。Energy efficiency for this purpose is also increasing.
過熱蒸気を発生させるボイラー６中の水源に硼素を含む
珪酸塩鉱物である電気石を投入することによって水源に
含まれている重金属などの金属イオンが電気石の電極に
電着するため金属イオンを水源から除去することができ
るようになった。By introducing tourmaline, which is a silicate mineral containing boron, into the water source in the boiler 6 that generates superheated steam, metal ions such as heavy metals contained in the water source are electrodeposited on the electrodes of the tourmaline. Can now be removed from water sources.
また、金属イオンを除去した水源を加熱することによっ
て、界面活性をもつ水は蒸気缶の中のスケール発生を防
ぐために、熱効率が良く、そのために過熱蒸気化を一層
早めることができるようになった。In addition, by heating the water source from which metal ions have been removed, the surface-active water has good thermal efficiency in order to prevent scale formation in the steam canister, making it possible to superheat and steam it even more quickly. .
過熱蒸気を発生させるボイラー６中に、酸素分離膜９を
内蔵させることによって水中の溶存ガスを酸素分離膜を
介して脱酸素することができるようになった。By incorporating an oxygen separation membrane 9 into the boiler 6 that generates superheated steam, dissolved gas in water can now be deoxidized via the oxygen separation membrane.
通常、常温下では水ｍ゛の中に５１余りの酸素ガスが溶
けこんでおり、これら水中に溶存酸素は酸化、腐食の原
因になるばかりか、金属溶解に過熱蒸気を利用する場合
には脱酸素することが製品向上のためにも必要なことで
ある。Normally, at room temperature, about 51 oxygen gases are dissolved in water, and dissolved oxygen in water not only causes oxidation and corrosion, but also desorbs when superheated steam is used to melt metals. Oxygen is also necessary for product improvement.
過熱蒸気を発生させる際には加熱脱気によって脱酸素が
行なわれることはいうまでもない。Needless to say, when superheated steam is generated, oxygen is removed by heating and degassing.
また、水を真空状態と接触させることにより真空側へ溶
存ガスを吸引排出するようになっている。Further, by bringing water into contact with a vacuum state, dissolved gas is sucked and discharged to the vacuum side.
ボイラー６に付設する真空室１０の稼動によって真空脱
気することが出来るようになっている。Vacuum deaeration can be performed by operating a vacuum chamber 10 attached to the boiler 6.
（発明の効果）
本発明によれば、安全性に懸念のあるガス源を主エネル
ギーとすることなく、過熱蒸気を利用し、水を活性化し
、脱酸素のプロセスを加味することによって、省エネル
ギーと製品向上につながるようになった。また、金属溶
解炉の側部から過熱蒸気を送出するため、金属溶解炉の
温度が全体に均一に上昇するばかりか、溶湯のホモジナ
イズ効果をもたらし、製品の品質向上が顕著になった。(Effects of the Invention) According to the present invention, energy can be saved by using superheated steam, activating water, and adding a deoxidation process without using a gas source with safety concerns as the main energy source. This has led to product improvements. In addition, since superheated steam is sent out from the side of the metal melting furnace, the temperature of the metal melting furnace not only increases uniformly throughout the furnace, but also produces a homogenizing effect on the molten metal, which significantly improves the quality of the product.
さらに、エネルギー効率も上昇することになった。Furthermore, energy efficiency has also increased.
第１図は、本発明に用いる金属溶解炉の概略図。 図中 受入口 金属溶解炉 溶湯口 金属滓排出口 過熱蒸気吹込口 ボイラ ガスバーナ ８ ： 過熱蒸気吹込ｒ１ ９ ： 酸素分離膜 １０： 真 グロ 室 FIG. 1 is a schematic diagram of a metal melting furnace used in the present invention. In the diagram Inlet metal melting furnace Molten spout Metal slag discharge port Superheated steam inlet boiler gas burner 8: Superheated steam injection r1 9: oxygen separation membrane 10: true Glo room
Claims (7)
はガスバーナーなどにより金属溶解炉中のインゴットを
予熱し、金属溶解炉に連続するボイラーから低圧高温過
熱蒸気を金属溶解炉に注入して金属を溶解する過熱蒸気
を利用する金属の溶解方法。(1) Before injecting superheated steam into the metal melting furnace, preheat the ingot in the metal melting furnace using an electric or gas burner, and then inject low-pressure, high-temperature superheated steam into the metal melting furnace from a boiler connected to the metal melting furnace. A method of melting metals using superheated steam.
物である電気石を投入したことを特徴とする特許請求の
範囲第１項記載の過熱蒸気を利用する金属の溶解方法。(2) A method for melting metal using superheated steam according to claim 1, characterized in that tourmaline, which is a silicate mineral containing boron, is added to a water source for generating superheated steam.
スを酸素分離膜を介して脱酸素することを特徴とする特
許請求の範囲第１項記載の過熱蒸気を利用する金属の溶
解方法。(3) A metal melting method using superheated steam according to claim 1, characterized in that an oxygen separation membrane is built into the boiler, and dissolved gas in water is deoxidized via the oxygen separation membrane. .
とにより、真空側へ溶存ガスを吸引排出させることを特
徴とする特許請求の範囲第１項記載の過熱蒸気を利用す
る金属の溶解方法。(4) A metal melting method using superheated steam according to claim 1, characterized in that dissolved gas is sucked and discharged to the vacuum side by bringing water supplied to the boiler into contact with a vacuum state.
解炉の下端に溶湯口を持ち、下端に近い中間部に金属滓
排出口を設け、その上下に開閉自在の低圧高温過熱蒸気
吹込口を数ヵ所併設し、該低圧高温過熱蒸気吹込口はボ
イラーに直結してなることを特徴とする過熱蒸気を利用
する金属溶解炉。(5) A metal melting furnace with an inlet at the top for inserting the ingot, a molten metal inlet at the lower end, a metal slag discharge port in the middle near the lower end, and a low-pressure, high-temperature superheated steam inlet that can be opened and closed above and below. A metal melting furnace that utilizes superheated steam and is characterized in that it has several locations and the low-pressure, high-temperature superheated steam inlet is directly connected to a boiler.
とする特許請求の範囲第５項記載の過熱蒸気を利用する
金属溶解炉。(6) A metal melting furnace using superheated steam according to claim 5, characterized in that an oxygen separation membrane is built into the boiler.
る特許請求の範囲第５項記載の過熱蒸気を利用する金属
溶解炉。(7) A metal melting furnace using superheated steam according to claim 5, characterized in that the boiler is provided with a vacuum deaeration chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11512090A JPH0413820A (en) | 1990-05-02 | 1990-05-02 | Method for melting metal utilizing superheated vapor and metal melting furnace using this method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11512090A JPH0413820A (en) | 1990-05-02 | 1990-05-02 | Method for melting metal utilizing superheated vapor and metal melting furnace using this method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0413820A true JPH0413820A (en) | 1992-01-17 |
Family
ID=14654751
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11512090A Pending JPH0413820A (en) | 1990-05-02 | 1990-05-02 | Method for melting metal utilizing superheated vapor and metal melting furnace using this method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0413820A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6474067B2 (en) | 2000-02-03 | 2002-11-05 | Chugoku Maintenance Co., Ltd. | Apparatus and method for resource recovery from organic substance |
| JP2009192184A (en) * | 2008-02-17 | 2009-08-27 | Thermo Electron Kk | Aluminum melting furnace, heat treatment apparatus, and casting system |
| US8360653B2 (en) | 2007-05-11 | 2013-01-29 | Schaeffler Technologies AG & Co. KG | Double row, angular contact ball bearing with two plastic comb cages with retaining tabs |
| US9322430B2 (en) | 2011-12-17 | 2016-04-26 | Aktiebolaget Skf | Bearing for a camshaft, and a camshaft |
| JP2017053026A (en) * | 2015-09-10 | 2017-03-16 | サンコール株式会社 | Aluminum melting device and aluminum regeneration system |
| WO2017043326A1 (en) * | 2015-09-10 | 2017-03-16 | サンコール株式会社 | Apparatus for melting aluminum and system for regenerating aluminum |
-
1990
- 1990-05-02 JP JP11512090A patent/JPH0413820A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6474067B2 (en) | 2000-02-03 | 2002-11-05 | Chugoku Maintenance Co., Ltd. | Apparatus and method for resource recovery from organic substance |
| US8360653B2 (en) | 2007-05-11 | 2013-01-29 | Schaeffler Technologies AG & Co. KG | Double row, angular contact ball bearing with two plastic comb cages with retaining tabs |
| JP2009192184A (en) * | 2008-02-17 | 2009-08-27 | Thermo Electron Kk | Aluminum melting furnace, heat treatment apparatus, and casting system |
| US9322430B2 (en) | 2011-12-17 | 2016-04-26 | Aktiebolaget Skf | Bearing for a camshaft, and a camshaft |
| JP2017053026A (en) * | 2015-09-10 | 2017-03-16 | サンコール株式会社 | Aluminum melting device and aluminum regeneration system |
| WO2017043326A1 (en) * | 2015-09-10 | 2017-03-16 | サンコール株式会社 | Apparatus for melting aluminum and system for regenerating aluminum |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR100275973B1 (en) | Method for removing boron from metallurgical grade silicon and apparatus | |
| JPH0413820A (en) | Method for melting metal utilizing superheated vapor and metal melting furnace using this method | |
| JPS62234654A (en) | Method and device for heating molten steel | |
| US1031257A (en) | Process and apparatus for extracting and refining metals and alloys. | |
| US3316082A (en) | Oxygen steelmaking | |
| CN103993132A (en) | Method for refining low-nitrogen steel by ladle refining furnace (LF) | |
| TWI816422B (en) | Refining method of molten steel | |
| US3615349A (en) | Production of alloys of iron | |
| BR0114773B1 (en) | procedure for the production of stainless steels, particularly fine chrome and nickel steel. | |
| JPH0234715A (en) | Method for melting and secondary-refining steel | |
| US1335009A (en) | Process and apparatus for manufacturing steel and steel alloys | |
| RU2209842C2 (en) | Metal melting and pouring method | |
| CN201201956Y (en) | 10-30 tons bottom breakout ladle external refining apparatus | |
| KR20150051055A (en) | A methode for low nitrogen of molten steel in an electric furnace | |
| JPH08120315A (en) | Preliminary refining method | |
| US1403349A (en) | Method and means for refining metals | |
| JPS6027726B2 (en) | Method for refining molten steel using a ladle | |
| JPH04202710A (en) | Vacuum refining method | |
| KR20170132312A (en) | Scrap melting in anode furnace processes | |
| JP2949698B2 (en) | Cast iron manufacturing method | |
| JPH0343227Y2 (en) | ||
| USRE27379E (en) | Consumable electrode furnace por electroslag refining | |
| KR100415678B1 (en) | A Method for Making High Purity Molten Iron Using DC Electric Field | |
| JPS6037846B2 (en) | Molten steel refining method | |
| SU438195A1 (en) | The method of steelmaking |