CN106735002A - A kind of double mouth of a river Electromagnetic heating pouring devices of formula of suppression flow control certainly - Google Patents
A kind of double mouth of a river Electromagnetic heating pouring devices of formula of suppression flow control certainly Download PDFInfo
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/007—Continuous casting of metals, i.e. casting in indefinite lengths of composite ingots, i.e. two or more molten metals of different compositions being used to integrally cast the ingots
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
- B22D11/0403—Multiple moulds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
- B22D11/041—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds for vertical casting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
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Abstract
本发明公开了一种自抑控流式双水口电磁复合浇铸装置，包括结晶器、自抑浸入式双水口装置和电磁场发生装置：自抑浸入式双水口装置包括竖直设置的短式浸入式水口和长式浸入式水口，二者均呈上端开口的管形；短式浸入式水口的插入深度小于长式浸入式水口插入深度；所述的短式浸入式水口下端设有向下倾斜侧孔和抑流出钢侧孔，所述长式浸入式水口的下端开设有向下倾斜出钢侧孔；所述的电磁场发生装置包括若干电磁体，所述的电磁体沿结晶器周向布置，用以产生水平磁场并作用于上层钢水和下层钢水的交界面，以抑制上层钢水和下层钢水混合。本发明在保证铸坯质量的前提下有效抑制两种钢水在交界处的混合，从而实现了高效、高品质的复合连续浇铸。
The invention discloses a self-inhibiting and flow-controlling double-nozzle electromagnetic composite casting device, which comprises a crystallizer, a self-inhibiting submerged double-nozzle device and an electromagnetic field generating device; The nozzle and the long submerged nozzle are both in the shape of a tube with an open upper end; the insertion depth of the short submerged nozzle is smaller than the insertion depth of the long submerged nozzle; the lower end of the short submerged nozzle is provided with a downward slope The lower end of the long submerged nozzle is provided with a downwardly inclined tapping side hole; the electromagnetic field generating device includes a number of electromagnets, and the electromagnets are arranged along the circumference of the mold. It is used to generate a horizontal magnetic field and act on the interface between the upper layer of molten steel and the lower layer of molten steel to inhibit the mixing of the upper layer of molten steel and the lower layer of molten steel. The invention effectively suppresses the mixing of the two molten steels at the junction under the premise of ensuring the quality of the billet, thereby realizing efficient and high-quality composite continuous casting.
Description
技术领域technical field
本发明属于钢材浇铸技术领域，具体涉及一种自抑控流式双水口电磁复合浇铸装置。The invention belongs to the technical field of steel material casting, and in particular relates to a self-inhibiting and flow-controlling double nozzle electromagnetic composite casting device.
背景技术Background technique
目前生产不锈钢/碳钢复合板材的办法主要有轧制复合法、爆炸焊接法以及铸造轧制法，但这些方法成材率以及产量均很低。在1978年Manokhin等人提出一种采用双结晶器生产复合连铸坯的方法，即将第一个结晶器中铸出的坯引到第二个结晶器内，再将另一种钢液包覆在其表面，从而拉出复合铸坯，该工艺虽属连续化生产，但操作复杂，难以控制，应用受到限制。At present, the methods for producing stainless steel/carbon steel clad plates mainly include rolling clad method, explosive welding method and casting and rolling method, but the yield and output of these methods are very low. In 1978, Manokhin et al. proposed a method of producing composite continuous casting slabs using double molds, that is, the slabs cast in the first mold were introduced into the second mold, and then another molten steel was coated. On its surface, the composite casting slab is pulled out. Although this process belongs to continuous production, the operation is complicated, difficult to control, and its application is limited.
日本Takeuchi等人在20世纪90年代末提出用恒稳磁场抑制异质钢液成分混合，在同一结晶器内实现两种钢种复合连铸的方法。结晶器内的流动比较复杂，流速也比较高，可能是因为电磁场抑制效果有限，浇铸产品达不到预期效果，日本相关单位只是做了中试试验，并没有产业化生产的后续报道。In the late 1990s, Japan’s Takeuchi et al. proposed a method of using a constant magnetic field to suppress the mixing of heterogeneous molten steel components, and to realize the composite continuous casting of two types of steel in the same mold. The flow in the crystallizer is relatively complicated, and the flow rate is relatively high. It may be because the electromagnetic field suppression effect is limited, and the cast product cannot achieve the expected effect. The relevant Japanese unit has only done a pilot test, and there is no follow-up report on industrial production.
东北大学Li等人后来提出了不依靠施加水平电磁场实现结晶器内复合浇铸的方法；为抑制两个钢种混合，在界面处添加挡板装置，并对该方法进行了物理模拟实验以及数值模拟。这种加了完整挡板结晶器可以有效地分隔上下两层的溶池，防止两种钢液混合，但是，使用的挡板使得下层熔池的夹杂物上浮受到阻碍，铸坯中夹杂物增加，降低钢的质量。Li et al. of Northeastern University later proposed a method of realizing composite casting in the mold without applying a horizontal electromagnetic field; in order to suppress the mixing of two steel types, a baffle device was added at the interface, and physical simulation experiments and numerical simulations were carried out on this method . This kind of crystallizer with complete baffles can effectively separate the upper and lower molten pools and prevent the two molten steels from mixing. However, the baffles used hinder the floating of inclusions in the lower molten pool, and the inclusions in the slab increase. , reducing the quality of the steel.
发明内容Contents of the invention
要实现有效的双钢种复合浇铸，最关键的问题是如何在不影响浇铸工艺以及铸坯质量的前提下有效抑制两种钢液交界面处的钢液混合，才能保证高效的高质量的复合连续浇铸，从而解决生产高质量复合铸坯的技术问题。针对现有技术的不足，本发明从流场的多手段控制方法和工艺控制方法出发，提出了一种自抑控流式双水口电磁复合浇铸装置，以解决现有技术中两种钢液在交界面处混合以及生产连续等技术问题。In order to realize effective dual-steel composite casting, the most critical issue is how to effectively suppress the mixing of molten steel at the interface of the two molten steels without affecting the casting process and the quality of the slab, so as to ensure efficient and high-quality composite casting. Continuous casting, so as to solve the technical problems of producing high-quality composite billets. Aiming at the deficiencies of the prior art, the present invention proposes a self-inhibiting flow control type double nozzle electromagnetic composite casting device based on the multi-method control method of the flow field and the process control method to solve the problem of the two kinds of molten steel in the prior art. Technical issues such as mixing at the interface and continuous production.
为了实现上述目的，本发明采用的技术方案如下：In order to achieve the above object, the technical scheme adopted in the present invention is as follows:
一种自抑控流式双水口电磁复合浇铸装置，包括结晶器、自抑浸入式双水口装置和电磁场发生装置：所述的自抑浸入式双水口装置包括竖直设置的短式浸入式水口和长式浸入式水口，二者均呈上端开口的管形；所述的短式浸入式水口的插入深度小于长式浸入式水口插入深度；所述的短式浸入式水口和长式浸入式水口的下端分别开设有向下倾斜的短式浸入式出钢侧孔和长式浸入式出钢侧孔，分别用于导出上层钢水和下层钢水；所述的电磁场发生装置包括若干电磁体，所述的电磁体沿结晶器周向布置，用以产生水平磁场并作用于上层钢水和下层钢水的交界面，以抑制上层钢水和下层钢水混合。A self-inhibiting and flow-controlled double nozzle electromagnetic composite casting device, including a crystallizer, a self-inhibiting submerged double nozzle device and an electromagnetic field generating device: the self-repressing submerged double nozzle device includes a vertically arranged short submerged nozzle and a long submerged nozzle, both of which are in the shape of an open upper end; the insertion depth of the short submerged nozzle is less than the insertion depth of the long submerged nozzle; the short submerged nozzle and the long submerged nozzle The lower end of the nozzle is respectively provided with downwardly inclined short-type immersion-type tapping side holes and long-type immersion-type tapping side holes, which are respectively used to lead out the upper layer of molten steel and the lower layer of molten steel; the electromagnetic field generating device includes several electromagnets. The above-mentioned electromagnets are arranged along the circumferential direction of the crystallizer to generate a horizontal magnetic field and act on the interface between the upper layer of molten steel and the lower layer of molten steel to inhibit the mixing of the upper layer of molten steel and the lower layer of molten steel.
进一步，在所述的结晶器内还设置有间隔式挡板控流装置；所述的间隔式挡板控流装置包括上层钢水挡板和下层钢水挡阻装置：所述的上层钢水挡板安装在所述的长式浸入式水口上，其上侧面与上层钢水和下层钢水的交界面重合，用于阻挡上层钢水向下流动；所述的下层钢水挡阻装置安装在所述的短式浸入式水口的底部，该下层钢水挡阻装置的底部具有一个水平的且与上层钢水和下层钢水的交界面重合的平面，用于阻挡下层钢水向上流动；所述的上层钢水挡板和下层钢水挡阻装置间隔设置，使二者之间形成过流通道，以保证浇铸过程中下层钢水中夹杂物上浮。Further, a spaced baffle flow control device is also provided in the crystallizer; the spaced baffle flow control device includes an upper molten steel baffle and a lower molten steel blocking device: the upper molten steel baffle is installed On the long submerged nozzle, its upper side coincides with the interface between the upper molten steel and the lower molten steel, and is used to block the downward flow of the upper molten steel; the lower molten steel blocking device is installed on the short submerged Type nozzle bottom, the bottom of the lower layer of molten steel blocking device has a horizontal plane that coincides with the interface between the upper layer of molten steel and the lower layer of molten steel for blocking the upward flow of the lower layer of molten steel; the upper layer of molten steel baffle and the lower layer of molten steel baffle The resistance devices are arranged at intervals to form a flow channel between them to ensure that the inclusions in the lower layer of molten steel float up during the casting process.
进一步，在所述的短式浸入出钢侧孔的下方还开设有抑流出钢侧孔，所述的抑流出钢侧孔向上倾斜设置，用于抵消短式浸入式出钢侧孔排出的钢水向下流动的速度。Further, below the short-type immersion-type tapping side hole, there is also a side hole for suppressing the flow of steel, and the side hole for suppressing the flow of steel is set upwardly, which is used to counteract the discharge of molten steel from the short-type immersion-type tapping side hole. The velocity of the downward flow.
进一步，所述的短式浸入式水口和长式浸入式水口均为耐火材料制成。Furthermore, both the short submerged nozzle and the long submerged nozzle are made of refractory materials.
进一步，所述的长式浸入式出钢侧孔、短式浸入式出钢侧孔和抑流出钢侧孔的截面呈长方形或圆形。Further, the cross-sections of the long submerged tapping side hole, the short submerged tapping side hole and the suppressed outflow tapping side hole are rectangular or circular.
进一步，所述的长式浸入式出钢侧孔的截面积大于或等于长式浸入式水口的截面面积的2倍；所述短式浸入式出钢侧孔和抑流出钢侧孔的截面积均大于或等于短式浸入式水口的截面面积的2倍。Further, the cross-sectional area of the long submerged tapping side hole is greater than or equal to twice the cross-sectional area of the long submerged nozzle; Both are greater than or equal to twice the cross-sectional area of the short submerged nozzle.
本发明通过结合自抑浸入式双水口、控流装置、电磁场、浇铸工艺等控制手段，控制结晶器内的流场，抑制浇铸过程中两个钢种的界面混合程度，从而实现双钢种的复合连续浇铸。本发明可应用于内层和外层分别为两个不同钢种的板坯、方坯、矩形坯、圆坯、异型坯等双钢种复合产品的连续浇铸生产。The present invention controls the flow field in the crystallizer by combining self-suppressing submerged double nozzles, flow control devices, electromagnetic fields, casting technology and other control means to control the flow field in the crystallizer and suppress the interface mixing degree of the two steel types during the casting process, thereby realizing the double steel type. Composite continuous casting. The invention can be applied to the continuous casting production of double-steel-type composite products, such as slabs, square billets, rectangular billets, round billets, special-shaped billets, and the like whose inner layer and outer layer are respectively two different steel types.
与现有的技术相比，本发明具有如下有益效果：Compared with the prior art, the present invention has the following beneficial effects:
1、通过自抑浸入式双水口和间隔式挡板控流装置控制结晶器内的主流股的方向，有效抑制主流股对上层钢水和下层钢水的交界面处冲击，抑制了交界面处钢水的混合。1. Control the direction of the mainstream strands in the crystallizer through self-suppressing submerged double nozzles and spaced baffle flow control devices, effectively inhibiting the impact of the mainstream strands on the interface between the upper and lower layers of molten steel, and inhibiting the flow of molten steel at the interface mix.
2、利用电磁发生装置抑制无挡板处钢水混合，与自抑浸入式双水口和间隔式挡板控流装置结合，更加完整的抑制了整个界面处钢水混合。2. The electromagnetic generating device is used to suppress the mixing of molten steel at the place without baffles, and combined with the self-suppressing submerged double nozzle and the spaced baffle flow control device, the mixing of molten steel at the entire interface is more completely suppressed.
3、采用异过热度浇铸方式，从减小温度差以及密度差的角度上，更好的控制了界面处钢水的混合，保证了复合浇铸的顺行。3. Adopting the different superheat casting method, from the perspective of reducing the temperature difference and density difference, it better controls the mixing of molten steel at the interface and ensures the smooth flow of composite casting.
附图说明Description of drawings
图1为本发明的结构示意图；Fig. 1 is a structural representation of the present invention;
图2为短式浸入式水口的结构示意图；Fig. 2 is a structural schematic diagram of a short submerged nozzle;
图3为长式浸入式水口的结构示意图。Fig. 3 is a structural schematic diagram of a long submerged nozzle.
附图中：1—结晶器；2—短式浸入式水口；21—短式浸入式出钢侧孔；22—抑流出钢侧孔；3—长式浸入式水口；31—长式浸入式出钢侧孔；4—电磁体；5—上层钢水挡板；6—下层钢水挡阻装置。In the attached drawings: 1—crystallizer; 2—short immersion nozzle; 21—short immersion tapping side hole; 22—suppressing outflow steel side hole; 3—long immersion nozzle; 31—long immersion type Tapping side hole; 4—electromagnet; 5—upper molten steel baffle; 6—lower molten steel blocking device.
图中，a为上层钢水的流动方向，b、c分别代下层钢水撞击坯壳后形成的向下和向上流动的钢水的方向。In the figure, a is the flow direction of the upper layer of molten steel, and b and c respectively represent the directions of the downward and upward flowing molten steel formed after the lower layer of molten steel hits the slab shell.
具体实施方式detailed description
下面结合具体实施例对本发明作进一步详细说明。The present invention will be described in further detail below in conjunction with specific embodiments.
一种自抑控流式双水口电磁复合浇铸装置，如图1-3所示，包括结晶器1，自抑浸入式双水口装置和电磁场发生装置；所述的自抑浸入式双水口装置包括竖直设置的短式浸入式水口2和长式浸入式水口3，二者均呈上端开口的管形；所述的短式浸入式水口2的在结晶器1内插入深度小于长式浸入式水口3插入深度；所述的短式浸入式水口2和长式浸入式水口3的下端分别开设有向下倾斜的短式浸入式出钢侧孔21和长式浸入式出钢侧孔31，分别用于导出上层钢水和下层钢水。A self-inhibiting flow-control type double nozzle electromagnetic composite casting device, as shown in Figure 1-3, includes a crystallizer 1, a self-inhibiting submerged double nozzle device and an electromagnetic field generating device; the self-inhibiting submerged double nozzle device includes The vertically arranged short submerged nozzle 2 and the long submerged nozzle 3 are both in the shape of a tube with an open upper end; the insertion depth of the short submerged nozzle 2 in the crystallizer 1 is smaller than that of the long submerged nozzle. The insertion depth of the nozzle 3; the lower ends of the short submerged nozzle 2 and the long submerged nozzle 3 are respectively provided with a downwardly inclined short submerged tapping side hole 21 and a long submerged tapping side hole 31, They are respectively used to export the upper layer of molten steel and the lower layer of molten steel.
所述的电磁场发生装置包括若干电磁体4，所述的电磁体4沿周向布设置在在结晶器1的外围壁上，用以产生水平磁场并作用于上层钢水和下层钢水的交界面位置，以抑制上层钢水和下层钢水混合。The electromagnetic field generating device includes a plurality of electromagnets 4, and the electromagnets 4 are arranged on the peripheral wall of the crystallizer 1 along the circumferential direction to generate a horizontal magnetic field and act on the interface position between the upper layer of molten steel and the lower layer of molten steel , to suppress the mixing of the upper layer of molten steel and the lower layer of molten steel.
如图1、3所示，长式浸入式水口3的角度向下倾斜，减弱长式浸入式水口3产生的上回旋流，从而减弱上回旋流对界面冲击。施加电磁场对钢水的混合进行抑制，水平磁场对垂直穿过水平磁场的钢水产生抑制作用，从而抑制上层钢水和下层钢水在交界处的混合。为保证对两个混合程度的抑制效果达到最佳，电磁场应在两种钢水交界面处达到最大，为此电磁体4的安装位置应与两种钢水交界面位置相对应。As shown in Figures 1 and 3, the angle of the long submerged nozzle 3 is inclined downward to weaken the upward swirling flow generated by the long submerged nozzle 3, thereby weakening the impact of the upward swirling flow on the interface. Applying an electromagnetic field inhibits the mixing of molten steel, and the horizontal magnetic field inhibits the molten steel passing through the horizontal magnetic field vertically, thereby inhibiting the mixing of the upper layer of molten steel and the lower layer of molten steel at the junction. In order to ensure the best suppression effect on the two mixing degrees, the electromagnetic field should reach the maximum at the interface of the two molten steels, so the installation position of the electromagnet 4 should correspond to the interface of the two molten steels.
作为优化，在所述的结晶器1内还设置有间隔式挡板控流装置；所述的间隔式挡板控流装置包括上层钢水挡板5和下层钢水挡阻装置6：As an optimization, a spaced baffle flow control device is also provided in the crystallizer 1; the spaced baffle flow control device includes an upper molten steel baffle 5 and a lower molten steel blocking device 6:
所述的上层钢水挡板5安装在所述的长式浸入式水口3上，其上侧面与上层钢水和下层钢水的交界面重合，用于阻挡上层钢水向下流动。所述的下层钢水挡阻装置6安装在所述的短式浸入式水口2的底部，该下层钢水挡阻装置6的底部具有一个水平的且与上层钢水和下层钢水的交界面重合的平面，用于阻挡下层钢水向上流动。所述的上层钢水挡板5和下层钢水挡阻装置6间隔设置，以使二者之间形成过流通道，以保证浇铸过程中下层钢水中夹杂物可以上浮。The upper molten steel baffle 5 is installed on the long submerged nozzle 3, and its upper side coincides with the interface between the upper molten steel and the lower molten steel, so as to block the downward flow of the upper molten steel. The lower molten steel blocking device 6 is installed at the bottom of the short submerged nozzle 2, and the bottom of the lower molten steel blocking device 6 has a horizontal plane that coincides with the interface between the upper layer of molten steel and the lower layer of molten steel, Used to block the upward flow of molten steel in the lower layer. The upper molten steel baffle plate 5 and the lower molten steel blocking device 6 are arranged at intervals so as to form a flow channel between them, so as to ensure that the inclusions in the lower molten steel can float up during the casting process.
这一设计目的是控制主流股对界面的冲击，从而抑制上、下层钢水在交界面的混合。如图1所示：上层钢水挡板5对短式浸入式水口2产生的主流股进行控制，下层钢水挡阻装置6对长式浸入式水口3产生的上回旋流进行控制。远离主流股的位置无挡板设置，保证复合浇铸过程中夹杂物上浮，实现高品质复合浇铸。The purpose of this design is to control the impact of the mainstream strands on the interface, thereby inhibiting the mixing of the upper and lower layers of molten steel at the interface. As shown in Figure 1: the upper molten steel baffle plate 5 controls the mainstream flow generated by the short submerged nozzle 2, and the lower molten steel blocking device 6 controls the upper swirling flow generated by the long submerged nozzle 3. There is no baffle set at a position away from the mainstream strand to ensure that the inclusions float up during the composite casting process to achieve high-quality composite casting.
作为优化，在所述的短式浸入出钢侧孔的下方还开设有抑流出钢侧孔22，所述的抑流出钢侧孔22向上倾斜设置，用于抵消短式浸入式出钢侧孔21排出的钢水向下流动的速度。As an optimization, a suppressed outflow tapped side hole 22 is also opened below the short submerged tapped side hole, and the suppressed outflowed steel tapped side hole 22 is set upwards to offset the short submerged tapped side hole 21 The speed at which the discharged molten steel flows downward.
短式浸入式水口2下部斜向上的对斜向下侧孔流出的下回旋流进行了抑制，使得短式浸入式水口2产生的流股如图1中所示，从而抑制了下回旋流对钢水交界面的冲击。The obliquely upward lower part of the short submerged nozzle 2 suppresses the downward swirling flow that flows out of the obliquely downward hole, so that the stream generated by the short submerged nozzle 2 is shown in Figure 1, thereby suppressing the downward swirling flow. Impact at the molten-steel interface.
作为优化，所述的短式浸入式水口2和长式浸入式水口3均为耐火材料制成。As an optimization, both the short submerged nozzle 2 and the long submerged nozzle 3 are made of refractory materials.
作为进一步优化，所述的长式浸入式出钢侧孔31、短式浸入式出钢侧孔21和抑流出钢侧孔22的截面呈长方形或圆形。As a further optimization, the cross sections of the long submerged tapping side hole 31 , the short submerged tapping side hole 21 and the suppressed flow tapping side hole 22 are rectangular or circular.
作为更进一步优化，所述的长式浸入式出钢侧孔31的截面积大于或等于长式浸入式水口3的截面面积的2倍；所述短式浸入式出钢侧孔21和抑流出钢侧孔22的截面积均大于或等于短式浸入式水口2的截面面积的2倍。As a further optimization, the cross-sectional area of the long-type submerged tapping side hole 31 is greater than or equal to 2 times the cross-sectional area of the long-type submerged nozzle 3; The cross-sectional area of the steel side holes 22 is greater than or equal to twice the cross-sectional area of the short submerged nozzle 2 .
在实际操作中，还应通过异过热度浇铸方式进行生产控制，以减小两个钢种界面处的温度差和密度差。如图1中结晶器1内上下两个熔池内上层钢水和下层钢水热物性参数不同，浇铸过程中需考虑由于温度差产生的对流以及密度差。针对上部熔池密度大、液相线低的钢种，浇铸过程中应采用上部过热度大于下部过热度的浇铸方式，减小温度差和密度差，保证复合浇铸的顺行。In actual operation, production control should also be carried out by casting with different superheats to reduce the temperature difference and density difference at the interface between the two steel grades. As shown in Figure 1, the upper and lower molten steel in the upper and lower molten steel pools in the crystallizer 1 have different thermophysical parameters, and the convection and density difference caused by the temperature difference must be considered during the casting process. For steel types with high density in the upper molten pool and low liquidus line, the casting method with the upper superheat degree greater than the lower superheat degree should be adopted during the casting process to reduce the temperature difference and density difference and ensure the smooth flow of composite casting.
此外，在实际操作中还将双水口、间隔式挡板控流装置、电磁发生装置以及异过热度浇铸控制方式进行优化结合考量，保证界面处钢液混合程度最小，熔池分层效果最佳，提出基于自抑控流双水口的电磁复合浇铸技术。具体可从以下角度进行思考和评估：In addition, in the actual operation, the dual nozzles, spaced baffle flow control device, electromagnetic generator and different superheat casting control methods are optimized and considered to ensure the minimum mixing degree of molten steel at the interface and the best lamination effect of the molten pool , proposed the electromagnetic composite casting technology based on self-inhibiting and controlling the flow of double nozzles. Specifically, it can be considered and evaluated from the following perspectives:
（1）结合自抑浸入式双水口、非连续挡板控流、电磁场发生装置的复合浇铸优化：通过数值模拟研究及物理模拟研究相结合，分析自抑浸入式双水口结构参数以及非连续挡板控流装置结构参数、尺寸与安装位置对结晶器1内流场的影响，并进行优化设计；确定浇铸过程工艺参数，实现上、下两层钢液混合程度的最小化。通过数值模拟探讨电磁场装置工艺参数（包括电磁装置安装位置、作用宽度、电流、频率、绕阻等）对上下层钢液界面处混合的抑制作用，获得最优电磁操作工艺参数。根据上述优化，获得利于复合浇铸的流场，保证界面混合程度较小，最终确定自抑浸入式双水口、非连续挡板控流、电磁场发生装置的参数。(1) Composite casting optimization combined with self-inhibited submerged double nozzles, discontinuous baffle flow control, and electromagnetic field generator: through the combination of numerical simulation research and physical simulation research, the structural parameters of self-inhibited submerged double nozzles and discontinuous baffles are analyzed. The impact of the structural parameters, size and installation position of the plate flow control device on the flow field in the crystallizer 1 is optimized, and the process parameters of the casting process are determined to minimize the mixing degree of the upper and lower layers of molten steel. The inhibitory effect of the process parameters of the electromagnetic field device (including the installation position, action width, current, frequency, winding, etc.) of the electromagnetic field device on the mixing at the interface of the upper and lower layers of molten steel is discussed through numerical simulation, and the optimal electromagnetic operation process parameters are obtained. According to the above optimization, a flow field that is beneficial to composite casting is obtained to ensure a small degree of interface mixing, and finally determine the parameters of the self-suppressed submerged double nozzle, non-continuous baffle flow control, and electromagnetic field generator.
（2）耦合流动-传热-电磁场的凝固行为、电磁参数、异过热度浇铸工艺设计：耦合流动-传热-电磁场对复合浇铸的凝固传热行为进行数值模拟研究，确定合适的电磁参数（电流以及频率）以及浇铸过程工艺参数（拉速）。在上述流动-传热-电磁场数学模型基础上，针对两钢种的热物性参数差异，分析双水口异过热度对连铸坯流动凝固的影响，获得适宜的过热度控制参数。最终确定合适的复合浇铸过程的过热度、电磁参数以及工艺参数。(2) Coupling flow-heat transfer-electromagnetic field solidification behavior, electromagnetic parameters, and different superheat casting process design: coupled flow-heat transfer-electromagnetic field conducts numerical simulation research on the solidification and heat transfer behavior of composite casting, and determines the appropriate electromagnetic parameters ( current and frequency) and casting process parameters (pulling speed). On the basis of the above-mentioned flow-heat transfer-electromagnetic field mathematical model, aiming at the differences in thermophysical parameters of the two steel types, the influence of the different superheat of the double nozzle on the flow and solidification of the continuous casting slab is analyzed, and the appropriate superheat control parameters are obtained. Finally determine the superheat, electromagnetic parameters and process parameters of the suitable composite casting process.
（3）基于自抑控流双水口的电磁复合浇铸技术的应用：将上述研究获得参数应用于实际生产，生产过程中对数据进行进一步采集、分析以及优化，从而为实际生产制定出适合复合浇铸的参数。(3) Application of electromagnetic composite casting technology based on self-inhibiting and controlled flow double nozzles: apply the parameters obtained in the above research to actual production, and further collect, analyze and optimize the data in the production process, so as to formulate suitable composite casting for actual production. parameters.
本发明的上述实施例仅仅是为说明本发明所作的举例，而并非是对本发明的实施方式的限定。对于所属领域的普通技术人员来说，在上述说明的基础上还可以做出其他不同形式的变化和变动。这里无法对所有的实施方式予以穷举。凡是属于本发明的技术方案所引申出的显而易见的变化或变动仍处于本发明的保护范围之列。The above-mentioned embodiments of the present invention are only examples for illustrating the present invention, rather than limiting the implementation of the present invention. For those of ordinary skill in the art, other variations and modifications in various forms can be made on the basis of the above description. All the implementation manners cannot be exhaustively listed here. All obvious changes or changes derived from the technical solutions of the present invention are still within the protection scope of the present invention.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4005743A (en) * | 1974-11-01 | 1977-02-01 | Kawasaki Steel Corporation | Apparatus for the continuous casting of metals especially steel, and method of continuously casting metals |
| JPS6216854A (en) * | 1985-07-15 | 1987-01-26 | Kawasaki Steel Corp | Method and apparatus for continuous production of clad material |
| EP0597113A1 (en) * | 1992-04-02 | 1994-05-18 | Nippon Steel Corporation | Method of continuously casting double-layered metallic material |
| DE4420697A1 (en) * | 1994-06-14 | 1995-12-21 | Inst Verformungskunde Und Huet | Method and appts for the continuous casting of a compound metal strip e.g. aluminium@ alloys |
| CN103648683A (en) * | 2011-07-12 | 2014-03-19 | 法国肯联铝业 | Multi-alloy vertical semi-continuous casting method |
-
2016
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4005743A (en) * | 1974-11-01 | 1977-02-01 | Kawasaki Steel Corporation | Apparatus for the continuous casting of metals especially steel, and method of continuously casting metals |
| JPS6216854A (en) * | 1985-07-15 | 1987-01-26 | Kawasaki Steel Corp | Method and apparatus for continuous production of clad material |
| EP0597113A1 (en) * | 1992-04-02 | 1994-05-18 | Nippon Steel Corporation | Method of continuously casting double-layered metallic material |
| DE4420697A1 (en) * | 1994-06-14 | 1995-12-21 | Inst Verformungskunde Und Huet | Method and appts for the continuous casting of a compound metal strip e.g. aluminium@ alloys |
| CN103648683A (en) * | 2011-07-12 | 2014-03-19 | 法国肯联铝业 | Multi-alloy vertical semi-continuous casting method |
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