JPS61169138A - Molding board for unidirectionally solidified steel ingot - Google Patents

Molding board for unidirectionally solidified steel ingot

Info

Publication number
JPS61169138A
JPS61169138A JP60009065A JP906585A JPS61169138A JP S61169138 A JPS61169138 A JP S61169138A JP 60009065 A JP60009065 A JP 60009065A JP 906585 A JP906585 A JP 906585A JP S61169138 A JPS61169138 A JP S61169138A
Authority
JP
Japan
Prior art keywords
molding board
steel ingot
water
surface plate
molding
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
Application number
JP60009065A
Other languages
Japanese (ja)
Inventor
Toshiyuki Yamaguchi
敏幸 山口
Hidesuke Matsuo
松尾　秀助
Ichiro Araki
一郎 荒木
Masami Shimizu
正己 清水
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP60009065A priority Critical patent/JPS61169138A/en
Publication of JPS61169138A publication Critical patent/JPS61169138A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D7/00—Casting ingots, e.g. from ferrous metals
    • B22D7/06—Ingot moulds or their manufacture
    • B22D7/062—Stools for ingot moulds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
    • B22D27/04—Influencing the temperature of the metal, e.g. by heating or cooling the mould
    • B22D27/045—Directionally solidified castings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D9/00—Machines or plants for casting ingots
    • B22D9/006—Machines or plants for casting ingots for bottom casting

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)

Abstract

PURPOSE:To improve solidified structure by superposing molding boards for unidirectional solidification forming the base of a steel ingot into two steps and cooling the spacing between the molding boards with water thereby regulating the cooling water and controlling cooling capacity. CONSTITUTION:The molding board is divided to the upper molding board 1 and the lower molding board 2. Channels 3 to serve as a water path are provided atop the lower molding board 2 and a packing 4 for preventing water leakage is embedded to the circumference of the water path. Water cooling is started prior to the start of casting or right after casting and is continued until the steel ingot is drawn. Only the upper molding board 1 is exchanged when the need for exchanging the molding board arises on progression of the damage of the molding board after several times of use.

Description

【発明の詳細な説明】 〔発明の利用分野〕 本発明は圧延用あるいは鍛造用鋼塊用定盤に係シ、特に
鋼塊底部から頂部に一方向凝固させる一方向凝固鋼塊用
定盤に関するものである。[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a surface plate for steel ingots for rolling or forging, and more particularly to a surface plate for unidirectionally solidified steel ingots that solidifies in one direction from the bottom to the top of the steel ingot. It is something.

〔発明の背景〕[Background of the invention]

近年水平方向断面の短辺が高さよシ大きく、鋳型内溶鋼
を底部から頂部に一方向凝固させる鋼塊が実用化されて
いる。本鋼塊は中心部の偏析、収縮孔等の欠陥が改善さ
れ、はば注状晶のみの清浄な鋼塊が得られる。しかし本
鋼塊を製造するには下方からの一方向凝固を促進させる
ため、面積が広くかつ肉厚も大きい巨大な定盤を使用せ
ざるを得々かった。尚、この定盤に関連するものとして
６鉄と鋼”ＶＯＬ６９　（１９８３）Ａｌｌ、ｐ６７、
住友金属技報ＶＯＬ３６　（１９８４）扁２，１６が知
られている。In recent years, steel ingots have been put into practical use in which the short side of the horizontal cross section is larger than the height, and the molten steel in the mold is solidified in one direction from the bottom to the top. This steel ingot has improved defects such as segregation and shrinkage pores in the center, and a clean steel ingot with only amorphous crystals can be obtained. However, in order to promote unidirectional solidification from below, in order to manufacture this steel ingot, it was necessary to use a huge surface plate with a large surface area and large wall thickness. In addition, related to this surface plate is 6 Tetsu to Hagane” VOL69 (1983) All, p67,
Sumitomo Metal Technical Report VOL36 (1984) Bian 2,16 is known.

〔発明の目的〕[Purpose of the invention]

本発明の目的は一方向凝固鋼塊の％質を損うととｋく、
製造原価を低減することを可能とする定盤を提供するこ
とにある。The purpose of the present invention is to reduce the percent quality of a directionally solidified steel ingot,
The object of the present invention is to provide a surface plate that makes it possible to reduce manufacturing costs.

〔発明の概要〕[Summary of the invention]

鋼塊製造過程において定盤は直接溶鋼と接するため特に
その接触面での損傷が激しく、一定回数損傷部のために
全体を交換するのはコストアップにつながる。そこで二
段重ねの定盤にすれば溶鋼と直接接する上定盤のみ交換
すれば良い。しかし定盤を二分割することは定盤間に断
熱層を生せしめＶｋの冷却能を低下させるとともに、上
定盤の熱容量が少ないため割損等の恐れが生ずる。そこ
で定盤間を水冷することにより上記問題点を解決せしめ
るとともに、冷却水量の調整により定盤の冷却能をコン
トロールし鋼塊の凝固組織をさらに改善することも可能
と々る。During the steel ingot manufacturing process, the surface plate comes into direct contact with molten steel, so the contact surface is particularly susceptible to severe damage, and replacing the entire plate a certain number of times due to damage increases costs. Therefore, if you use a two-tiered surface plate, you only need to replace the upper surface plate, which is in direct contact with the molten steel. However, dividing the surface plate into two creates a heat insulating layer between the surface plates, which reduces the cooling capacity of Vk, and the heat capacity of the upper surface plate is small, leading to the risk of breakage. Therefore, by water-cooling the space between the surface plates, the above problem can be solved, and by adjusting the amount of cooling water, it is possible to control the cooling capacity of the surface plates and further improve the solidification structure of the steel ingot.

〔発明の実施例〕[Embodiments of the invention]

第１図は本発明の定盤による一方向凝固鋼塊の鋳込状況
の側断面図、第２図は下定盤の平面図である。定盤は第
１図に示すように上下二段に分割されており、下定盤２
上面には第２図のように水路となる溝３がきられている
。また水路周囲には水洩れ防止の為パツキン４が埋めら
れている。鋳込開始前又は直後より水冷を開始し鋼塊抜
き取りだ場合は上定盤１のみ交換する。FIG. 1 is a side sectional view of a directionally solidified steel ingot being cast using the surface plate of the present invention, and FIG. 2 is a plan view of the lower surface plate. The surface plate is divided into upper and lower parts as shown in Figure 1, and the lower surface plate 2
A groove 3 serving as a waterway is cut in the upper surface as shown in Fig. 2. Also, a gasket 4 is buried around the waterway to prevent water leakage. If water cooling is started before or immediately after the start of casting and the steel ingot is to be extracted, only the upper surface plate 1 is replaced.

〔発明の効果〕〔Effect of the invention〕

本発明によれば定盤が水冷されかつ二段に分割されてい
るため、鋼塊高さに応じて定盤の肉厚を大きくとる必要
がなく、定盤の寿命を延長できる。According to the present invention, since the surface plate is water-cooled and divided into two stages, there is no need to increase the wall thickness of the surface plate depending on the height of the steel ingot, and the life of the surface plate can be extended.

また、定盤としての寿命がきても上定盤のみ交換すれば
良いので、定盤費用の大幅な低減かり能となり、冷却水
量の調整により定盤の冷却能をコントロールし鋼塊凝固
組織の改善が可能となるなどの効果を有する。In addition, since only the upper surface plate needs to be replaced even when the surface plate reaches the end of its service life, the cost of the surface plate can be significantly reduced, and the cooling capacity of the surface plate can be controlled by adjusting the amount of cooling water, improving the solidification structure of the steel ingot. This has the effect of making it possible to

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本発明の一方向凝固鋼塊用定盤の実施例の鋳込
状態の側断面図、第２図は第１図の下定盤の平面図であ
る。 １・・・上定盤、２・・・下定盤、３・・・水路、４・
・・パツキン、５・・・鋳型、６・・・断熱材、７・・
・溶鋼。FIG. 1 is a sectional side view of a surface plate for a directionally solidified steel ingot according to an embodiment of the present invention in a cast state, and FIG. 2 is a plan view of the lower surface plate of FIG. 1. 1...Upper surface plate, 2...Lower surface plate, 3...Waterway, 4.
...Packing, 5...Mold, 6...Insulating material, 7...
- Molten steel.

Claims (1)

【特許請求の範囲】[Claims] １、水平方向断面の短辺が高さより大きな鋼塊の製造に
際して、鋳型内溶鋼を底部から頂部に一方向凝固させる
鋼塊において、鋼塊底面を形成する定盤を二段重ねにす
るとともに、定盤間を水冷することを特徴とする一方向
凝固鋼塊用定盤。1. When producing a steel ingot in which the short side of the horizontal cross section is larger than the height, the molten steel in the mold is solidified in one direction from the bottom to the top, and the surface plates forming the bottom of the steel ingot are stacked in two stages, A surface plate for unidirectionally solidified steel ingots characterized by water cooling between the surface plates.
JP60009065A 1985-01-23 1985-01-23 Molding board for unidirectionally solidified steel ingot Pending JPS61169138A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP60009065A JPS61169138A (en) 1985-01-23 1985-01-23 Molding board for unidirectionally solidified steel ingot

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP60009065A JPS61169138A (en) 1985-01-23 1985-01-23 Molding board for unidirectionally solidified steel ingot

Publications (1)

Publication Number Publication Date
JPS61169138A true JPS61169138A (en) 1986-07-30

Family

ID=11710208

Family Applications (1)

Application Number Title Priority Date Filing Date
JP60009065A Pending JPS61169138A (en) 1985-01-23 1985-01-23 Molding board for unidirectionally solidified steel ingot

Country Status (1)

Country Link
JP (1) JPS61169138A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007009060A3 (en) * 2005-07-12 2007-10-25 Alcoa Inc Method of unidirectional solidification of castings and associated apparatus
US8448690B1 (en) 2008-05-21 2013-05-28 Alcoa Inc. Method for producing ingot with variable composition using planar solidification
CN105382218A (en) * 2015-10-29 2016-03-09 中冶京诚工程技术有限公司 Forced cooling chassis and method thereof
CN106670388A (en) * 2017-02-21 2017-05-17 中冶京诚工程技术有限公司 Steel ingot cooling die
CN109079111A (en) * 2018-09-14 2018-12-25 中航上大高温合金材料有限公司 A kind of molding mold and the drawing process based on the mold

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007009060A3 (en) * 2005-07-12 2007-10-25 Alcoa Inc Method of unidirectional solidification of castings and associated apparatus
EP2218527A1 (en) * 2005-07-12 2010-08-18 Alcoa Inc. Apparatus for unidirection solidification of castings
EP2295167A1 (en) * 2005-07-12 2011-03-16 Alcoa Inc. Apparatus for unidirection solidification of castings
US7951468B2 (en) 2005-07-12 2011-05-31 Alcoa Inc. Method of unidirectional solidification of castings and associated apparatus
US8448690B1 (en) 2008-05-21 2013-05-28 Alcoa Inc. Method for producing ingot with variable composition using planar solidification
CN105382218A (en) * 2015-10-29 2016-03-09 中冶京诚工程技术有限公司 Forced cooling chassis and method thereof
CN106670388A (en) * 2017-02-21 2017-05-17 中冶京诚工程技术有限公司 Steel ingot cooling die
CN109079111A (en) * 2018-09-14 2018-12-25 中航上大高温合金材料有限公司 A kind of molding mold and the drawing process based on the mold

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