JP4129914B2 - Melting furnace for metals suitable for direct and continuous tapping of molten metal - Google Patents

Melting furnace for metals suitable for direct and continuous tapping of molten metal Download PDF

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JP4129914B2
JP4129914B2 JP2002541327A JP2002541327A JP4129914B2 JP 4129914 B2 JP4129914 B2 JP 4129914B2 JP 2002541327 A JP2002541327 A JP 2002541327A JP 2002541327 A JP2002541327 A JP 2002541327A JP 4129914 B2 JP4129914 B2 JP 4129914B2
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melting furnace
cupola
metal
spherical
standby
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JP2004513327A (en
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スポレト，アントニオ
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スポレト，アントニオ
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/14—Charging or discharging liquid or molten material
    • F27D3/145—Runners therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B1/00—Shaft or like vertical or substantially vertical furnaces
    • F27B1/10—Details, accessories, or equipment peculiar to furnaces of these types
    • F27B1/21—Arrangements of devices for discharging
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B3/00—Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces
    • F27B3/10—Details, accessories, or equipment peculiar to hearth-type furnaces
    • F27B3/19—Arrangements of devices for discharging
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D2003/0085—Movement of the container or support of the charge in the furnace or in the charging facilities
    • F27D2003/0089—Rotation about a horizontal or slightly inclined axis

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
  • Crucibles And Fluidized-Bed Furnaces (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Muffle Furnaces And Rotary Kilns (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)

Abstract

Melting furnace for leagues of metal of second melting especially conformed with a special type of channel of connection, with a rotating joint (7) among the cupola(1) and the basin of wait of spherical form (8) and able to ruotate, such to allow the poured direct and continuous way of the liquid metal, without giving place interruptions of the cycle of work, from the cupola to the basin of wait and from this to the ingot mould.

Description

【０００１】
（技術分野）
本発明は、溶解炉系の主要な部分であるキュポラと待機湯だまりとの間に特別な型の接続を有し、特に前記待機湯だまりは回転できるように構成され、作業サイクルに中断の余地を与えない鋳造結合系として実現された融解金属類の二次溶解炉に関する。
【０００２】
（背景技術）
従来技術に従った系では、鋳造サイクルの３つの段階を区別して、３つの主な要素、即ち、溶解炉、出湯チャネル、及び待機湯だまりに結合させることができる。
【０００３】
最初の段階は、溶解炉又はキュポラにスクラップ類を装入して溶解することである。この段階では、材料を溶解するために必要な比熱を生成する大量の熱エネルギーを供給し、また更に、キュポラの中に存在する全ての装入スクラップが溶解を完了する間、金属の液相を維持するために必要な潜熱のエネルギー量を供給することが必要である。２番目の段階は、溶解炉を休止し、その後で不完全冷却を実施して、溶解された材料を、特別の出湯チャネルを介して待機湯だまりへ出湯させることである。出湯チャネルは、一般的に、融解金属を更に冷却する戸外への流路によって実現される。３番目又は最後の段階は、待機湯だまりの中で金属の補正及び添加によって材料群を変態させること、及び２番目の段階の必然的冷却によって散逸したエネルギーを補うため、必要な比熱及び潜熱を生じる熱エネルギーを付与することである。この手法の長い溶解及び出湯時間は、大量のガスを融解金属に吸収させるので、多くの場合、待機湯だまりの中で、液体窒素の注入によって、浴中の添加を予見する或るタイプの補正を加え、材料群を脱ガスして、欠陥の無いインゴット及び鋳塊を得る必要がある。
【０００４】
（発明の開示）
本発明の目的は、先行技術の不便を除去して、融解金属が、キュポラから回転可能な待機湯だまりへ、更に待機湯だまりから鋳塊鋳型へと、直接及び連続的に出湯されるようにする特別の接続を有する溶解炉を実現し、エネルギー・コスト、管理時間、及び手作業を減少させ、同時に、作業の良好な安全条件を実現することである。作業の良好な安全条件が実現されるのは、鋳造サイクルが事実上完全に密閉サイクルとして起こり、作業員は溶解材料と接触しないからである。
【０００５】
従って、連続した鋳造サイクルは中断を無用にする。従って、第１に溶解炉の休止と冷却は最小限度にされ、第２に熱エネルギーは燃料、時間、及び手作業の節減を確実にする。
【０００６】
図面を参照すると、本発明の実施形態において、金属製カバー（３）によって取り囲まれた耐火物（２）の壁を有する立方体形状のキュポラ（１）が示される。キュポラ（１）には、１つの側面にバーナ（４）が存在し、他の側面に装入扉（５）が存在し、その反対側面の中央下部に開口（６）が存在する。融解金属は開口（６）から流出して、出湯チャネル（７）を介して球形待機湯だまり（８）へ達する。湯だまり（８）は、支持要素（１０）によって支えられ、低い平面の穴（９）に置かれる。出湯チャネル（７）は、キュポラ（１）と待機湯だまり（８）との間で特殊な回転ジョイントとして実現され、円形断面を有し十分に熱絶縁された２つの中空円筒体（１１）及び（１２）から構成される。円筒体（１１）及び（１２）の各々の端（１３）及び（１４）は、それぞれキュポラ（１）及び待機湯だまり（８）へ固定され、各々の他の自由端（１５）及び（１６）は、同軸となるように自由端（１５）が自由端（１６）に同軸に挿入されている。２つの円筒体（１１）及び（１２）の間には、内側の円筒体（１１）に対して外側の円筒体（１２）が摩擦を生じることなく回転できるように、数センチメートルを超えない間隔が存在する。
【０００７】
球形待機湯だまり（８）は、２つの半球から構成されるセットである。このセットは、１つの半球が他の半球の上に載せられており、金属性カバー（１９）によって取り囲まれた耐火物（１７）及び熱絶縁物（１８）の壁を有し、湯だまり（８）の２つの上記中空半球の接合ラインが、出湯チャネル（７）と事実上同じ高さとなるように、支持体（１０）によって支えられ、穴（９）の中に置かれている。２つの上記中空半球の接合ラインと直交する円周上の近くに、バーナ（２０）及び融解金属の出口オリフィス（２１）が置かれている。
【０００８】
金属スクラップがキュポラの中で溶解したとき、融解金属は開口（６）から出て、出湯チャネル（７）を通り、球形待機湯だまり（８）に達する。融解金属が湯だまり（８）の中で更なる処理を受けて最終的に所望の結果へ達すると、湯だまり（８）は動力系によって溶解炉の長手方向の中心軸Ｉの周りを回転させられ、融解金属は出口オリフィス（２１）から出て鋳塊鋳型へ達する。
【０００９】
明瞭に分かるように、本発明は、その目的を完全に充足している。
【００１０】
実際に、等方性の熱力学的及び物理学的原理によって、待機湯だまりの特別に採用された幾何学的形状（球体）は、鋳造の技術サイクルの全手順を向上及び改善する。更に、溶解炉のキュポラと待機湯だまりとの間に実現された特定の接続によって（キュポラと湯だまりとは別個のものであるが、操業中は、回転ジョイント手段へ結合される）、これらの構成部分は同時的に働いて、燃料、時間、及び手作業を著しく節減した連続溶解系を実現する。従って、従来技術の標準の系と比較して、５０パーセントの経済効率が得られる。
【００１１】
実施形態の全ての詳細部分は、必要に応じて同じ技術特性を有する他の要素によって置き換えられることができ、寸法及び形状は、本質的に、ユーザの必要性に従って変更されることができる。
【図面の簡単な説明】
【図１】 図１は、溶解炉を横から見た略断面図である。
【図２】 図２は、溶解炉を上から見た略断面図である。
【図３】 図３は、回転する接続チャネルを示す略図である。[0001]
(Technical field)
The present invention has a special type of connection between the cupola, which is the main part of the melting furnace system, and the standby hot water puddle, and in particular, the standby hot puddle is configured to be able to rotate, leaving room for interruption in the work cycle. The present invention relates to a secondary melting furnace for molten metals that is realized as a cast-bonding system that does not give heat.
[0002]
(Background technology)
In the system according to the prior art, the three phases of the casting cycle can be distinguished and combined with three main elements: a melting furnace, a tapping channel and a standby puddle.
[0003]
The first stage is to charge and melt scrap into a melting furnace or cupola. At this stage, a large amount of heat energy is generated that generates the specific heat required to melt the material, and further, the liquid phase of the metal is drained while all the charging scrap present in the cupola has completed melting. It is necessary to supply the amount of latent heat energy necessary to maintain. The second stage is to pause the melting furnace and then perform incomplete cooling to allow the melted material to pour through a special tapping channel into a standby puddle. The tapping channel is generally realized by a flow path to the outdoor where the molten metal is further cooled. The third or final stage transforms the group of materials by correction and addition of metals in the standby pool and compensates for the energy dissipated by the inevitable cooling of the second stage, so that the specific heat and latent heat required It is to give the resulting thermal energy. The long dissolution and tapping time of this approach allows a large amount of gas to be absorbed by the molten metal, so in some cases a type of correction that foresees addition in the bath by injecting liquid nitrogen in a stand-up puddle. And degassing the material group to obtain defect-free ingots and ingots.
[0004]
(Disclosure of the Invention)
The object of the present invention is to eliminate the inconvenience of the prior art so that the molten metal is discharged directly and continuously from the cupola to the rotatable standby puddle and from the standby puddle to the ingot mold. To achieve a melting furnace with special connections to reduce energy costs, management time and manual work, while at the same time achieving good working safety conditions. Good operating safety conditions are realized because the casting cycle occurs virtually as a closed cycle and the operator does not come into contact with the melted material.
[0005]
Thus, a continuous casting cycle makes no interruptions. Thus, first, melting furnace downtime and cooling are minimized, and secondly, thermal energy ensures fuel, time, and manual savings.
[0006]
Referring to the drawings, in an embodiment of the present invention, a cube-shaped cupola (1) having a refractory (2) wall surrounded by a metal cover (3) is shown. The cupola (1) has a burner (4) on one side, an insertion door (5) on the other side, and an opening (6) at the lower center of the opposite side. Molten metal flows out of the opening (6) and reaches the spherical standby pool (8) through the hot water channel (7). The puddle (8) is supported by the support element (10) and is placed in the low planar hole (9). The tapping channel (7) is realized as a special rotary joint between the cupola (1) and the standby puddle (8), and has two hollow cylinders (11) having a circular cross section and sufficiently thermally insulated, and (12). The ends (13) and (14) of the cylinders (11) and (12) are respectively fixed to the cupola (1) and the standby pool (8), and the other free ends (15) and (16), respectively. ), The free end (15) is coaxially inserted into the free end (16) so as to be coaxial. Between the two cylinders (11) and (12) no more than a few centimeters so that the outer cylinder (12) can rotate without friction with respect to the inner cylinder (11) An interval exists.
[0007]
The spherical standby pool (8) is a set composed of two hemispheres. This set has one hemisphere resting on the other hemisphere and has walls of refractory (17) and thermal insulation (18) surrounded by a metallic cover (19), The joint line of the two hollow hemispheres of 8) is supported by the support (10) and placed in the hole (9) so that it is at substantially the same height as the tapping channel (7). Near the circumference orthogonal to the joining line of the two hollow hemispheres , a burner (20) and a molten metal outlet orifice (21) are placed.
[0008]
When the metal scrap melts in the cupola, the molten metal exits the opening (6), passes through the hot water channel (7), and reaches the spherical standby pool (8). When the molten metal is further processed in the puddle (8) and finally reaches the desired result, the puddle (8) is rotated around the longitudinal central axis I of the melting furnace by the power system. The molten metal exits the exit orifice (21) and reaches the ingot mold.
[0009]
As can be clearly seen, the present invention fully fulfills its purpose.
[0010]
In fact, due to the isotropic thermodynamic and physical principles, the specially adopted geometry (sphere) of the standby puddle improves and improves the overall procedure of the casting technical cycle. Furthermore, due to the specific connection realized between the cupola of the melting furnace and the standby puddle (separate from the cupola and puddle, but during operation, it is coupled to the rotating joint means), these The components work simultaneously to achieve a continuous dissolution system with significant savings in fuel, time and manual labor. Thus, an economic efficiency of 50 percent is obtained compared to the prior art standard system.
[0011]
All details of the embodiments can be replaced by other elements having the same technical characteristics as needed, and the dimensions and shapes can be essentially changed according to the needs of the user.
[Brief description of the drawings]
FIG. 1 is a schematic cross-sectional view of a melting furnace as viewed from the side.
FIG. 2 is a schematic cross-sectional view of a melting furnace as viewed from above.
FIG. 3 is a schematic diagram showing a rotating connection channel.

Claims (5)

金属類の二次溶解炉であって、キュポラ（１）から球形待機湯だまり（８）への融解金属出湯チャネル（７）が、円形断面を有する２つの中空円筒体（１１）及び（１２）から構成され、該円筒体の各々の１つの端（１３）及び（１４）が、それぞれキュポラ（１）及び待機湯だまり（８）へ固定され、各々の他の自由端（１５）及び（１６）が、同軸となるように自由端（１５）が自由端（１６）へ挿入され、待機湯だまり（８）が、溶解炉の長手方向の中心軸Ｉの周りを回転し、融解金属を、直接的および連続的に出口オリフィス（２１）から流出することを特徴とする溶解炉。A secondary melting furnace metals, cupola (1) of spherical waiting tundish melting metal tapping channel to (8) (7), two hollow cylinders which have a circular cross-section (11) and (12 ), And one end (13) and (14) of each of the cylinders is fixed to the cupola (1) and the standby pool (8), respectively, and each other free end (15) and ( 16) is inserted into the free end so as to be coaxial (15) free end (16), waits tundish (8), to rotate about the longitudinal central axis I of the melting furnace, the melting metal A melting furnace characterized in that it flows directly and continuously from the outlet orifice (21). キュポラ（１）が、立方体の形状を有して金属製カバー（３）によって取り囲まれた耐火物（２）の壁を有し、キュポラの１つの側面にバーナー（４）が存在し、他の１つの側面に装入扉（５）が存在し、その反対の側面の中央下に開口（６）が存在し、融解金属が、該開口から出湯チャネル（７）を通って球形待機湯だまり（８）へ流出することを特徴とする請求項１に記載の金属類の二次溶解炉。The cupola (1) has a wall of refractory (2) having a cubic shape and surrounded by a metal cover (3) , with a burner (4) on one side of the cupola and the other There is a charging door (5) on one side, an opening (6) below the center of the opposite side, and the molten metal passes from the opening through the hot water channel (7) (spherical waiting pool ( The secondary melting furnace for metals according to claim 1, wherein the second melting furnace flows out to step 8). 出湯チャネル（７）が、キュポラ（１）と待機湯だまり（８）との間の回転ジョイントとして実現され、２つの円筒体（１１）及び（１２）の間に、内側の円筒体（１１）に対して外側の円筒体（１２）が摩擦を生じることなく回転できる間隔が存在することを特徴とする請求項１に記載の金属類の二次溶解炉。The tapping channel (7) is realized as a rotary joint between the cupola (1) and the standby pool (8), between the two cylinders (11) and (12), the inner cylinder (11) 2. The secondary melting furnace for metals according to claim 1, wherein there is an interval in which the outer cylindrical body (12) can rotate without causing friction. 球形待機湯だまり（８）が、金属製カバー（１９）で取り囲まれた耐火物（１７）及び熱絶縁物（１８）の壁を有する２つの中空半球のセットにより構成され、該中空半球の１つの上に他の中空半球が載っており、前記湯だまり（８）の２つの上記中空半球の接合ラインが出湯チャネル（７）とほぼ同じ高さとなるように、前記湯だまり（８）が支持体（１０）で支えられて、キュポラ（１）の設置面に設けられた穴（９）の中へ部分的に入れられていることを特徴とする請求項１に記載の金属類の二次溶解炉。A spherical standby puddle (8) is constituted by a set of two hollow hemispheres having walls of a refractory (17) and a thermal insulator (18) surrounded by a metal cover (19). Another hollow hemisphere is placed on the two and the hot water puddle (8) is supported so that the joining line of the two hollow hemispheres of the hot water puddle (8) is approximately the same height as the outlet channel (7). 2. Secondary metal according to claim 1, characterized in that it is supported by the body (10) and partly placed in a hole (9) provided in the installation surface of the cupola (1). melting furnace. 球形待機湯だまり（８）の２つの上記中空半球の接合ライン上の近くに、バーナ（２０）及び融解金属の出口オリフィス（２１）が配置されていることを特徴とする請求項１から４のいずれか一項に記載の金属類の二次溶解炉。5. The burner (20) and the molten metal outlet orifice (21) are arranged near the joining line of the two hollow hemispheres of the spherical standby pool (8). A secondary melting furnace for metals according to any one of the preceding claims.
JP2002541327A 2000-11-13 2001-11-07 Melting furnace for metals suitable for direct and continuous tapping of molten metal Expired - Fee Related JP4129914B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT000075A ITNA20000075A1 (en) 2000-11-13 2000-11-13 Melting furnace for metal alloys suitable for direct and continuous spillage of molten metal.
PCT/IT2001/000557 WO2002039044A2 (en) 2000-11-13 2001-11-07 Melting furnace for metal leagues fit to the direct and continuous poured of the melted metal

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JP2004513327A JP2004513327A (en) 2004-04-30
JP4129914B2 true JP4129914B2 (en) 2008-08-06

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AT (1) ATE338930T1 (en)
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IT (1) ITNA20000075A1 (en)
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IT1396275B1 (en) 2009-11-09 2012-11-16 Hitech S R L FULLY MODULAR ALUMINUM ALLOY FOUNDATION PLANT.
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EP1334324B1 (en) 2006-09-06
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JP2004513327A (en) 2004-04-30
ITNA20000075A1 (en) 2002-05-13
ES2295237T3 (en) 2008-04-16
DE60122920T2 (en) 2007-06-21
CN1394272A (en) 2003-01-29
WO2002039044A3 (en) 2002-08-22
ATE338930T1 (en) 2006-09-15
CN100365366C (en) 2008-01-30
DE60122920D1 (en) 2006-10-19
PT1334324E (en) 2007-01-31
AU2002222507A1 (en) 2002-05-21
EP1334324A2 (en) 2003-08-13

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