WO2008061453A1 - Lingot de fonderie ayant une fine structure granuleuse équiaxe - Google Patents

Lingot de fonderie ayant une fine structure granuleuse équiaxe Download PDF

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Publication number
WO2008061453A1
WO2008061453A1 PCT/CN2007/003300 CN2007003300W WO2008061453A1 WO 2008061453 A1 WO2008061453 A1 WO 2008061453A1 CN 2007003300 W CN2007003300 W CN 2007003300W WO 2008061453 A1 WO2008061453 A1 WO 2008061453A1
Authority
WO
WIPO (PCT)
Prior art keywords
ingot
vacuum
crystallizer
water
fine equiaxed
Prior art date
Application number
PCT/CN2007/003300
Other languages
English (en)
Chinese (zh)
Inventor
Shucheng Zhu
Xibin Wang
Guochao Cao
Original Assignee
Nanyang Hanye Special Steel Co., 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 Nanyang Hanye Special Steel Co., Ltd filed Critical Nanyang Hanye Special Steel Co., Ltd
Publication of WO2008061453A1 publication Critical patent/WO2008061453A1/fr

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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

Definitions

  • the utility model belongs to the technical field of metallurgical casting, in particular to a vacuum fine equiaxed crystal ingot.
  • cast steel ingots are usually cast steel, cast iron monolithic molds, and lining refractory materials, and ingots are relatively less and less in steel companies.
  • high-strength alloy materials are still inseparable from ingots. This is because the ingots are forged and rolled, the deformation ratio is large, the grains are broken, the internal shrinkage and cracks are eliminated, and the comprehensive mechanical properties of the metal materials are improved.
  • the grain refinement by forging and rolling is limited, and the mechanical properties are still not high enough.
  • the molten steel is directly in contact with the air, and the molten steel is liable to have secondary oxidation. Therefore, the ingot produced by the prior art has the defects of uneven grain, large impurities and low product quality.
  • the utility model solves the above problems, and an object thereof is to provide a vacuum fine equiaxed crystal ingot which can make the original state of the ingot into fine equiaxed crystals and has good comprehensive mechanical properties of the ingot.
  • the vacuum fine isoaxial crystal ingot adopts a crystallizer as an ingot mold, wherein: the crystallizer is a water-cooled crystallizer.
  • the water-cooled crystallizer has a mold inner mold, a crystallizer water-cooling jacket, and a cooling bottom plate, and the inner cavity of the mold has a circular cross section or a rectangular shape or a hexagonal shape.
  • the vacuum fine equiaxed crystal ingot also has a vacuum cover in which the water-cooled crystallizer is located.
  • the vacuum cover has a ladle vacuum chamber, a tundish vacuum chamber and a water-cooled crystallizer vacuum chamber.
  • the vacuum chamber is relatively independently closed.
  • the vacuum fine equiaxed crystal ingot crystallizer prepared by the above scheme has an ingot mold which is a water-cooled crystallizer, the water-cooled crystallizer has a mold inner mold, a crystallizer water-cooling jacket and a cooling bottom plate, and the mold inner mold is located in the crystal water-cooling jacket.
  • the degree of superheat of the molten steel flowing out of the gating system is controlled by induction heating or the like, and the number of nucleation is greatly increased. Due to the cooling effect of the water-cooled jacket of the crystallizer, the heat released by the solidification and crystallization of the molten steel can be equivalent to the heat carried away by the cooling water.
  • the liquid molten steel drops a little in the template in the crystallizer, crystallizes a little, and the crystal grains do not grow up, so it is crystallized. Fine equiaxed grains are formed in the template.
  • the ingot is also formed, and all solidified and crystallized.
  • the original ingot formed is fine equiaxed crystal, and the comprehensive mechanical properties of the ingot are significantly enhanced.
  • the cooling bottom plate is placed at the bottom of the mold in the mold, which increases the cooling capacity of the bottom of the mold in the mold and promotes the formation of fine equiaxed grains.
  • the vacuum cover Since the vacuum cover is added, the water-cooled crystallizer is located in the vacuum cover, and the vacuum cover is vacuumed during use to reduce the partial pressure of gases such as 0 2 , N 2 , etc., thereby reducing the secondary oxidation of the molten steel and promoting the molten steel.
  • the escape of harmful gases such as 0 2 , N 2 , etc., and the escape of harmful gases can drive the floating inclusions of harmful inclusions in the molten steel to escape the molten steel surface, making the resulting metal more pure and reducing impurities in the ingot.
  • the ingot casted by using the vacuum fine equiaxed crystal ingot crystallizer has good mechanical properties, high purity of the ingot, and after forging, rolling and heat treatment, the comprehensive mechanical properties of the material are greatly increased, and the profit is increased. Space can be greatly improved and so on.
  • FIG. 1 is a schematic view of the assembly structure of the present invention.
  • FIG. 2 is a schematic view of another assembly structure of the present invention.
  • the vacuum fine equiaxed crystal ingot of the utility model has an ingot mold and a water-cooled crystallizer 2 as an ingot mold of the vacuum fine equiaxed crystal ingot crystallizer.
  • the water-cooled crystallizer 2 has a mold inner mold 3, a crystallizer water-cooling jacket 4 and a cooling bottom plate 5, and the mold inner mold 3 is located in the inner cavity of the crystallizer water-cooling jacket 4, and the cooling bottom plate 5 is disposed at the bottom of the mold 3 in the crystallizer. .
  • the template 3 in the crystallizer is made of a material having relatively high thermal conductivity such as copper, copper alloy, aluminum alloy, etc., and the inner cavity section of the template 3 in the crystallizer is circular or rectangular or hexagonal or other polygonal, crystallized.
  • the water-cooling jacket 4 is made of ordinary steel, stainless steel, etc.
  • the water-cooling jacket 4 of the crystallizer is provided with a water circulation passage for cooling, and the water circulation passage is connected with an external cooling duct, and the function of the crystal water-cooling jacket 4 is to provide cooling circulating water. And support protection.
  • the inside of the cooling floor 5 is provided with a water circulation passage for cooling, which is connected to an external cooling duct.
  • the vacuum fine equiaxed crystal ingot also has a vacuum cover 1, and the inside of the vacuum cover 1 is a cavity, and the water-cooled crystallizer 6 is located in the cavity of the vacuum cover 1.
  • the vacuum hood can be evacuated during operation to reduce oxidation of the molten steel during casting.
  • the vacuum chamber 1 has a ladle vacuum chamber 1. 1 , a tundish vacuum chamber 1. 2 and a water-cooled crystallizer vacuum chamber 1. 3, the vacuum chamber is relatively independent, when pouring,
  • the ladle 6, the tundish 7, and the water-cooled crystallizer 2 are respectively placed in corresponding vacuum chambers, and each vacuum chamber can be vacuumed in stages during operation to reduce oxidation of the molten steel during casting.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

La présente invention se rapporte à une billette de fonderie ayant une fine structure granuleuse équiaxée qui a une lingotière, la lingotière étant un cristallisateur refroidi par eau qui a une plaque de moule interne, une chemise refroidie par eau et une plaque inférieure de refroidissement. La plaque de moule interne est disposée dans la cavité interne de la chemise refroidie par eau, la plaque inférieure de refroidissement est disposée au fond de la plaque de moule interne, un boîtier sous vide est disposé autour du cristallisateur refroidi par eau et le cristallisateur refroidi par eau est placé dans le boîtier sous vide. Par rapport à un lingot de fonderie produit par le cristallisateur, la présence d'impuretés dans le lingot coulé est réduite, l'homogénéité des fins grains équiaxes dans le lingot coulé est améliorée, toute la performance du lingot coulé est significativement améliorée, la quantité de lingot coulé est forte et le lingot coulé peut être appliqué à un moule de fonderie pour l'acier coulé, la fonte, un matériau d'alliage à haute ténacité, etc.
PCT/CN2007/003300 2006-11-21 2007-11-21 Lingot de fonderie ayant une fine structure granuleuse équiaxe WO2008061453A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CNU200620130560XU CN201020516Y (zh) 2006-11-21 2006-11-21 真空细等轴晶铸锭
CN200620130560.X 2006-11-21

Publications (1)

Publication Number Publication Date
WO2008061453A1 true WO2008061453A1 (fr) 2008-05-29

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2007/003300 WO2008061453A1 (fr) 2006-11-21 2007-11-21 Lingot de fonderie ayant une fine structure granuleuse équiaxe

Country Status (2)

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CN (1) CN201020516Y (fr)
WO (1) WO2008061453A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CZ306775B6 (cs) * 2016-05-10 2017-06-28 MATERIÁLOVÝ A METALURGICKÝ VÝZKUM s.r.o. Kokilová sestava s vodním chlazením
CN109332612A (zh) * 2018-12-25 2019-02-15 锦州同创真空冶金科技有限公司 一种栅格式往复水冷锭模装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111496199A (zh) * 2019-01-30 2020-08-07 上海交通大学 一种提高铸锭冷却速度的装置及其使用方法

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3921698A (en) * 1971-08-31 1975-11-25 Leybold Heraeus Verwaltung Method for the production of metallic ingots
US6264717B1 (en) * 1999-11-15 2001-07-24 General Electric Company Clean melt nucleated cast article
JP2002126858A (ja) * 2000-10-23 2002-05-08 Ulvac Japan Ltd シート状鋳片の冷却容器
CN1439469A (zh) * 2003-01-26 2003-09-03 孙柏良 一种真空补缩水冷模铸技术
JP2003290906A (ja) * 2002-04-04 2003-10-14 Daido Steel Co Ltd Ｎｉ基合金の再溶解法
CN1563464A (zh) * 2004-03-31 2005-01-12 四川大学 高纯度薄板状钕铁硼合金铸锭的制作方法
CN2705247Y (zh) * 2004-06-16 2005-06-22 霍艳权 立铸铜模

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3921698A (en) * 1971-08-31 1975-11-25 Leybold Heraeus Verwaltung Method for the production of metallic ingots
US6264717B1 (en) * 1999-11-15 2001-07-24 General Electric Company Clean melt nucleated cast article
JP2002126858A (ja) * 2000-10-23 2002-05-08 Ulvac Japan Ltd シート状鋳片の冷却容器
JP2003290906A (ja) * 2002-04-04 2003-10-14 Daido Steel Co Ltd Ｎｉ基合金の再溶解法
CN1439469A (zh) * 2003-01-26 2003-09-03 孙柏良 一种真空补缩水冷模铸技术
CN1563464A (zh) * 2004-03-31 2005-01-12 四川大学 高纯度薄板状钕铁硼合金铸锭的制作方法
CN2705247Y (zh) * 2004-06-16 2005-06-22 霍艳权 立铸铜模

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CZ306775B6 (cs) * 2016-05-10 2017-06-28 MATERIÁLOVÝ A METALURGICKÝ VÝZKUM s.r.o. Kokilová sestava s vodním chlazením
CN109332612A (zh) * 2018-12-25 2019-02-15 锦州同创真空冶金科技有限公司 一种栅格式往复水冷锭模装置

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