CN113996768A - Crystallizer for semi-continuous casting of Monel square billet - Google Patents

Crystallizer for semi-continuous casting of Monel square billet Download PDF

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Publication number
CN113996768A
CN113996768A CN202111287246.8A CN202111287246A CN113996768A CN 113996768 A CN113996768 A CN 113996768A CN 202111287246 A CN202111287246 A CN 202111287246A CN 113996768 A CN113996768 A CN 113996768A
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China
Prior art keywords
crystallizer
water
cooling sleeve
water cooling
crystallizer body
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CN202111287246.8A
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Chinese (zh)
Inventor
周向东
浦益龙
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Jiangsu Longda Super Alloy Co ltd
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Jiangsu Longda Super Alloy Co ltd
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Priority to CN202111287246.8A priority Critical patent/CN113996768A/en
Publication of CN113996768A publication Critical patent/CN113996768A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/04Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
    • B22D11/055Cooling the moulds
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/001Continuous casting of metals, i.e. casting in indefinite lengths of specific alloys
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C9/00Alloys based on copper

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Continuous Casting (AREA)

Abstract

The invention provides a crystallizer for semi-continuous casting of Monel square billets, which comprises a crystallizer body forming a casting cavity, wherein a water cooling sleeve is circumferentially arranged on the outer side of the crystallizer body, and a gap type cooling water channel is formed between the water cooling sleeve and the crystallizer body; the water cooling sleeve is provided with a water inlet pipe, and the bottom of the water cooling sleeve is provided with a water spraying flange; the front side and the rear side of the crystallizer body are cambered surfaces, and the connecting part of any two sides of the front side, the rear side, the left side and the right side of the crystallizer body is in arc transition. The invention provides a crystallizer for semi-continuous casting aiming at a non-vacuum casting Monel alloy square billet with the thickness of more than 120mm and the width-to-thickness ratio of more than 4, wherein the crystallizer is designed with a certain radian on the width, so that the front side surface and the rear side surface of a crystallizer body are cambered surfaces, the Monel alloy liquid can be uniformly cooled in a casting cavity, the width surface is flat after the Monel alloy liquid is cooled, the structure is uniform, the surface milling amount is small, and the quality is stable and reliable in subsequent hot rolling.

Description

Crystallizer for semi-continuous casting of Monel square billet
Technical Field
The invention relates to the technical field of semi-continuous casting, in particular to a crystallizer for semi-continuous casting of Monel square billets.
Background
Monel sheet materials are widely used in various occasions due to the characteristics of excellent corrosion resistance, good welding performance and the like, and the square billet casting of the Monel sheet materials is divided into vacuum casting and non-vacuum casting. At present, Monel square billets with the thickness of more than 120mm and the width-thickness ratio of more than 4 (width/thickness) are mostly melted in a vacuum furnace and poured into a rectangular iron mold for natural cooling, and because the width of the Monel square billet in the iron mold is more than 4 times of the thickness, the cooling is obviously slow, the structure is easy to be uneven, and the defects of rolling cracking and the like are caused in the subsequent hot rolling.
Disclosure of Invention
The invention aims to overcome and supplement the defects in the prior art, and provides a crystallizer for semi-continuous casting of Monel square billets, which is mainly used for non-vacuum casting Monel square billets with the thickness of more than 120mm and the width-to-thickness ratio of more than 4, so that the cooled square billets have uniform tissues, are beneficial to the subsequent hot rolling process, and are not easy to crack during rolling.
In order to achieve the purpose, the invention adopts the following technical scheme:
a crystallizer for the semi-continuous casting of Monel square billets comprises a crystallizer body forming a casting cavity, wherein a water cooling sleeve is circumferentially arranged on the outer side of the crystallizer body; a gap type cooling water channel is formed between the water cooling sleeve and the crystallizer body; the water cooling sleeve is provided with a water inlet pipe, and the bottom of the water cooling sleeve is provided with a water spraying flange.
Preferably, the front side surface and the rear side surface of the crystallizer body are both cambered surfaces, and the connecting parts of any two side surfaces of the front side surface, the rear side surface, the left side surface and the right side surface of the crystallizer body are in arc transition.
Preferably, the width of the mold body is a, the thickness of the mold body is b, and a: b > 4.
Preferably, the number of the water inlet pipes perpendicular to the width direction of the crystallizer body is c, the number of the water inlet pipes perpendicular to the thickness direction of the crystallizer body is d, and c: d > 3: 1.
preferably, water inlet pipes are arranged on the periphery of the water cooling sleeve; and the water inlet pipe is provided with an adjusting valve and a pressure gauge.
Preferably, the water cooling jacket is provided with a water cooling jacket outer shell.
Preferably, the radius of an inner hole of the water spraying flange is 1.5-2.5mm, and the included angle between the water flow spraying direction of the water spraying flange and the central line of the casting cavity is 60 degrees.
Preferably, the width of the slit cooling water channel is 1.5-2 mm.
Preferably, the water cooling sleeve is cast by a ductile iron sand mold, and the thickness of the water cooling sleeve is 10-30 mm.
Preferably, the components of the crystallizer body 1 comprise, by mass, 0.6-1.2% of Cr0.1-0.2% of Zr, and the balance of copper; the crystallizer body 1 is made of CuCrZr.
Compared with the prior art, the invention has the beneficial effects that: the invention provides a crystallizer for semi-continuous casting aiming at a non-vacuum casting Monel alloy square billet with the thickness of more than 120mm and the width-to-thickness ratio of more than 4, wherein the crystallizer is designed with a certain radian on the width, so that the front side surface and the rear side surface of a crystallizer body are cambered surfaces, the Monel alloy liquid can be uniformly cooled in a casting cavity, the width surface is flat after the Monel alloy liquid is cooled, the structure is uniform, the surface milling amount is small, the continuous casting Monel alloy square billet is beneficial to a subsequent hot rolling process, and the Monel alloy square billet is not easy to crack during rolling.
Drawings
Fig. 1 is a front view of the structural components of the present invention.
Fig. 2 is a bottom view of the structural components of the present invention.
In the figure, 1-crystallizer body; 2-water cooling jacket; 3-a slit cooling water channel; 4-water inlet pipe; 5-a water spraying flange; 6-water cooling jacket shell; 11-casting cavity.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings and embodiments, and it is to be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 and 2: a crystallizer for semi-continuous casting of Monel square billets comprises a crystallizer body 1 forming a casting cavity 11, wherein a water cooling sleeve 2 is circumferentially arranged on the outer side of the crystallizer body 1; a gap type cooling water channel 3 is formed between the water cooling sleeve 2 and the crystallizer body 1; the water cooling sleeve 2 is provided with a water inlet pipe 4, and the bottom of the water cooling sleeve 2 is provided with a water spraying flange 5.
The invention sets up the water cooling jacket 2 outside the body 1 of the crystallizer, and the said water cooling jacket 2 and body 1 of the crystallizer enclose into a cooling water cavity namely the slit type cooling water course 3, there are inlet tubes 4 around the water cooling jacket 2, the external water pump sends the cooling water to each way of inlet tubes 4 at the same time, the water of each way of inlet tubes 4 enters the slit type cooling water course 3, after pouring Monel alloy liquid into casting cavity 11, the heat is conducted to the cooling water through the sidewall of the body 1 of the crystallizer, carry on the water-cooling once; the cooling water is directly sprayed on the cast ingot through a water spraying flange 5 at the bottom of the water cooling jacket 2 to take away a large amount of heat of the cast ingot, and secondary water cooling is carried out. The produced square billet product has uniform structure, less milling amount and stable and reliable quality in subsequent hot rolling.
Specifically, the front side and the back side of the crystallizer body 1 are both cambered surfaces, and the connecting part between any two sides of the front side, the back side, the left side and the right side of the crystallizer body 1 is in arc transition.
The crystallizer body 1 is designed with a certain radian in width, so that the front side surface and the rear side surface of the crystallizer body 1 are cambered surfaces, the Monel liquid can be uniformly cooled in the casting cavity 11, the width surface is smooth after the Monel liquid is cooled, the milling surface amount is small, and the defects of cracking and the like are not easy to occur in subsequent hot rolling.
In an embodiment of the present invention, the width of the mold body 1 is a, the thickness of the mold body 1 is b, and a: b > 4; this allows the production of billets having a width to thickness ratio greater than 4 (width/thickness).
Further, in another embodiment, the number of the water inlet pipes 4 perpendicular to the width direction of the mold body 1 is c, the number of the water inlet pipes 4 perpendicular to the thickness direction of the mold body 1 is d, and c: d > 3: 1.
because the width-thickness ratio of the square billet is more than 4, the ratio of the number of the water inlet pipes in the width and the thickness is set to be more than 3: 1, the square billet can be fully and fully cooled in an all-around way, and the cooled square billet has uniform tissue.
In the embodiment of the invention, water inlet pipes 4 are arranged on the periphery of the water cooling sleeve 2, and regulating valves and pressure gauges are arranged on the water inlet pipes 4.
In order to ensure the consistency of the flow pressure of each water inlet pipe, a regulating valve and a pressure gauge are arranged between each water inlet pipe and the water cooling sleeve, so that the water cooling sleeve is accurately controlled.
Further, in some embodiments of the present invention, the water cooling jacket 2 is provided with a water cooling jacket housing 6. The water cooling jacket shell is arranged to play a role in protecting the water cooling jacket 2.
Further, in another embodiment, the radius of the inner hole of the water spraying flange 5 is 1.5-2.5mm, and the included angle between the water flow spraying direction of the water spraying flange 5 and the center line of the casting cavity 11 is 60 degrees.
The radius of the inner hole of the water spraying flange 5 is set to be 1.5-2.5mm, so that smaller cooling water flow can be obtained, and the smaller cooling water flow can reduce the cracking tendency in the casting process; the included angle between the water flow spraying direction of the water spraying flange 5 and the central line of the casting cavity 11 is set to be 60 degrees, so that the cooling water jets which are distributed uniformly can be obtained, and the cast ingot can be cooled by the cooling water conveniently.
Further, in another embodiment, the width of the slit cooling water channel 3 is 1.5-2 mm; the width is the width of the gap enclosed by the water cooling sleeve 2 and the crystallizer body 1, namely the width is the distance between the water cooling sleeve 2 and the crystallizer body 1, and the smaller gap can be filled with cooling water rapidly, so that the crystallizer body 1 can be cooled rapidly and uniformly.
In the embodiment of the invention, the water cooling jacket 2 is cast by a ductile iron sand mold, and the thickness of the water cooling jacket is 10-30 mm; the nodular cast iron is a high-strength cast iron material and is suitable for casting parts with high requirements on strength, toughness and wear resistance.
In the embodiment of the invention, the crystallizer body 1 is formed by forging chromium-zirconium-copper with a forging ratio of more than 4 and then machining, and specifically, the components of the crystallizer body 1 comprise, by mass, 0.6-1.2% of Cr0.6, 0.1-0.2% of Zr and the balance of copper; the crystallizer body 1 is made of CuCrZr.
It should be noted that the thickness of the cooled Monel square billet is more than 120mm, the bottom of the crystallizer body 1 is provided with a movable base as a movable bottom of the casting cavity 11, the base is used for drawing and supporting the cast ingot, and the cast ingot is continuously pulled out of the casting cavity 11 by a transmission mechanism of the casting machine through the base in the casting process.
The invention relates to a using method of a crystallizer for semi-continuous casting of Monel square billets, which comprises the following steps: the external water pump simultaneously sends cooling water to each water inlet pipe 4, and the cooling water in each water inlet pipe 4 enters a slit type cooling water channel 3 formed between the water cooling jacket 2 and the crystallizer body 1; the base is used as a movable bottom of the casting cavity 11 and plays a forming role together with the crystallizer body 1, after Monel liquid is injected into the casting cavity 11, heat is conducted to cooling water through the side wall of the crystallizer body 1, and the Monel liquid in the crystallizer body 1 is rapidly and uniformly cooled and condensed into a state of a solid shell on the outer surface (the inner surface is not completely solidified and is still liquid). The cooling water is sprayed on the solid shell on the outer surface directly through the cooling water with a spraying angle of 60 degrees of a water spraying flange 5 at the bottom of the water cooling jacket 2 to cool the Monel ingot. In the semi-continuous casting process, the transmission mechanism of the casting machine continuously pulls the cast ingot out of the casting cavity 11 through the base. Because the width of the crystallizer body 1 is designed into a certain radian in consideration of the Monel cooling rate, and the arc transition is designed at the junction of the width and the thickness, after Monel liquid is injected into the casting cavity 11, the width surface of the square billet cooled finally can be smooth, the milling amount is small, the structure is uniform, and the defect of cracking is not easy to occur in the subsequent hot rolling.
Finally, it should be noted that the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to examples, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.

Claims (10)

1. A crystallizer for the semi-continuous casting of monel billets, comprising a crystallizer body (1) defining a casting cavity (11), characterized in that: a water cooling sleeve (2) is circumferentially arranged on the outer side of the crystallizer body (1); a gap type cooling water channel (3) is formed between the water cooling sleeve (2) and the crystallizer body (1); the water cooling sleeve (2) is provided with a water inlet pipe (4), and the bottom of the water cooling sleeve (2) is provided with a water spraying flange (5).
2. The crystallizer of claim 1, wherein: the crystallizer is characterized in that the front side surface and the rear side surface of the crystallizer body (1) are cambered surfaces, and the connecting parts of any two side surfaces of the front side surface, the rear side surface, the left side surface and the right side surface of the crystallizer body (1) are in arc transition.
3. The crystallizer for semi-continuous casting of Monel alloy billets as claimed in claim 2, wherein: the width of the crystallizer body (1) is a, the thickness of the crystallizer body (1) is b, and a: b > 4.
4. The crystallizer for semi-continuous casting of Monel alloy billets as claimed in claim 3, wherein: the number of the water inlet pipes (4) which are vertical to the width direction of the crystallizer body (1) is c, the number of the water inlet pipes (4) which are vertical to the thickness direction of the crystallizer body (1) is d, and c: d > 3: 1.
5. the crystallizer of claim 4, wherein: water inlet pipes (4) are arranged on the periphery of the water cooling sleeve (2); and the water inlet pipe (4) is provided with an adjusting valve and a pressure gauge.
6. The crystallizer for semi-continuous casting of Monel alloy billets as claimed in any one of claims 1 to 5, wherein: and a water cooling sleeve shell (6) is arranged on the water cooling sleeve (2).
7. The crystallizer of claim 1, wherein: the radius of an inner hole of the water spraying flange (5) is 1.5-2.5mm, and the included angle between the water flow spraying direction of the water spraying flange (5) and the central line of the casting cavity (11) is 60 degrees.
8. The crystallizer of claim 1, wherein: the width of the slit-type cooling water channel (3) is 1.5-2 mm.
9. The crystallizer of claim 1, wherein: the water cooling sleeve (2) is cast by a ductile iron sand mold, and the thickness of the water cooling sleeve is 10-30 mm.
10. The crystallizer of claim 1, wherein: the crystallizer body (1) comprises the following components, by mass, 0.6-1.2% of Cr0.1-0.2% of Zr, and the balance of copper; the crystallizer body (1) is made of CuCrZr.
CN202111287246.8A 2021-11-02 2021-11-02 Crystallizer for semi-continuous casting of Monel square billet Pending CN113996768A (en)

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CN202111287246.8A CN113996768A (en) 2021-11-02 2021-11-02 Crystallizer for semi-continuous casting of Monel square billet

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Application Number Priority Date Filing Date Title
CN202111287246.8A CN113996768A (en) 2021-11-02 2021-11-02 Crystallizer for semi-continuous casting of Monel square billet

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101745618A (en) * 2008-12-18 2010-06-23 苏州有色金属研究院有限公司 Non-continuous water cooling device for aluminum alloy casting
CN201960100U (en) * 2011-03-17 2011-09-07 大连大山结晶器有限公司 Copper pipe of continuous casting square billet crystallizer
CN202224617U (en) * 2011-09-30 2012-05-23 宁波正元铜合金有限公司 Metal semicontinuous casting crystallizer
CN105290351A (en) * 2015-11-13 2016-02-03 江阴兴澄特种钢铁有限公司 Cogged ingot continuous casting crystallizer copper pipe not prone to deformation
CN106513603A (en) * 2016-12-29 2017-03-22 西南铝业(集团)有限责任公司 Crystallizer
CN107243609A (en) * 2017-06-16 2017-10-13 浙江天宁合金材料有限公司 A kind of copper and copper alloy casting crystallizer
CN211727411U (en) * 2019-12-31 2020-10-23 大连大山铜业有限公司 Crystallizer for producing square billet copper alloy cast ingot
JP2021065910A (en) * 2019-10-24 2021-04-30 三菱アルミニウム株式会社 Casting apparatus

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101745618A (en) * 2008-12-18 2010-06-23 苏州有色金属研究院有限公司 Non-continuous water cooling device for aluminum alloy casting
CN201960100U (en) * 2011-03-17 2011-09-07 大连大山结晶器有限公司 Copper pipe of continuous casting square billet crystallizer
CN202224617U (en) * 2011-09-30 2012-05-23 宁波正元铜合金有限公司 Metal semicontinuous casting crystallizer
CN105290351A (en) * 2015-11-13 2016-02-03 江阴兴澄特种钢铁有限公司 Cogged ingot continuous casting crystallizer copper pipe not prone to deformation
CN106513603A (en) * 2016-12-29 2017-03-22 西南铝业(集团)有限责任公司 Crystallizer
CN107243609A (en) * 2017-06-16 2017-10-13 浙江天宁合金材料有限公司 A kind of copper and copper alloy casting crystallizer
JP2021065910A (en) * 2019-10-24 2021-04-30 三菱アルミニウム株式会社 Casting apparatus
CN211727411U (en) * 2019-12-31 2020-10-23 大连大山铜业有限公司 Crystallizer for producing square billet copper alloy cast ingot

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Application publication date: 20220201

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