Metal casting and continuous rolling method and equipment capable of achieving melt distribution and heat exchange separation in crystallizer
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A melt distribution and crystallizer technology, applied in metal rolling and other directions, can solve problems such as difficult removal of oxide film, achieve the effect of increasing material range, solving surface oxidation, and improving heat dissipation
Active Publication Date: 2021-12-31
张明
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For the mold with integrated melt distribution and heat exchange functions, after the production is over, a thin layer of metal oxide film will remain in the flow channel of the mold, which is difficult to remove in actual production
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Embodiment 1
[0040] in the attached figure 1 and 2 In the preferred embodiment shown, take the metal casting and continuous rolling equipment of φ560 / φ980×1820mm specification as an example to produce aluminum alloy slabs, and further illustrate the present invention:
[0041] The thickness of the crystallizer channel is 10mm, casting slabs with a thickness of 8mm, the casting speed is 6-18m / min, the deformation rate of the casting slab is 20-65%, the thickness of the casting and rolling mill exit is 2.8-6.4mm, and the exit speed is 7.2-30m / min.
[0042] Before the vertical plate: the crystallizer is docked with the rolls of the casting and rolling mill, the linear speed of the rolls is set within the range of 6-18m / min, and the gate of the distributor is confirmed to be closed, and the aluminum alloy melt at 680°C-720°C is continuously injected into the front box and Distributor, open the discharge port of the distributor, when the temperature of the melt at the discharge port is close t...
Embodiment 2
[0047] in the attached figure 1 and 2 In the preferred embodiment shown, take the metal casting and continuous rolling equipment of φ540 / φ920×1200mm specification as an example to produce copper alloy slabs, and further illustrate the present invention:
[0048] The thickness of the crystallizer runner is 30mm, casting a slab with a thickness of 25mm, the casting speed is 4-10m / min, the deformation rate of the casting slab is 12-58%, the thickness of the exit of the casting and rolling mill is 10-22mm, and the exit speed is 4.5-16m / min.
[0049] Before the vertical plate: the crystallizer is docked with the rolls of the casting and rolling mill, the linear speed of the rolls is set within the range of 4 to 10m / min, and the gate of the distributor is confirmed to be closed, and the copper alloy melt at 1100°C to 1160°C is continuously injected into the front box and Distributor, open the discharge port of the distributor, when the temperature of the melt at the discharge port ...
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Abstract
The invention discloses a metal casting and continuous rolling method and equipment capable of achieving melt distribution and heat exchange separation of a crystallizer, and relates to a method and equipment for producing a metal plate blank. The online moving water-cooled crystallizer with melt distribution and heat exchange function separation is in butt joint with a roller before production, and is separated from the roller during production; according to the production condition, water can be selectively sprayed to the outside of a heat exchanger, and the casting blank heat dissipation capacity is further improved; and the crystallizer composed of a distributor and the heat exchanger solves the contradiction that heat preservation is achieved in the plate erecting process and heat conductivity is good in the production process through melt distribution and heat exchange function separation. In addition, after the split type crystallizer is used for production, a residual metal oxide film in a runner can be conveniently removed; the surface of a casting blank can be prevented from being adhered to the inner wall of the heat exchanger through online movement of the crystallizer; and according to a crystallizer sealing mechanism, under the condition that the crystallizer is separated from the roller, the casting blank does not make contact with air before rolling, in the plate thickness adjusting process and in the rolling process, and the problem that the surface of the casting blank is oxidized in the production process is effectively solved.
Description
technical field [0001] The present invention relates to a method and equipment for producing metal slabs, more specifically, to a method and equipment for continuously producing slabs from metal melts with improved casting and rolling conditions of a metal casting and continuous rolling mill. Background technique [0002] China Patent Publication Date November 20, 2018, Publication No. CN 108838207 A announced a "metal casting and continuous rolling method and equipment", the core of which is: continuous injection of metal melt, especially aluminum alloy melt into a butt joint with the roll Inside the water-cooled crystallizer, the melt is rapidly cooled inside the crystallizer, and solidifies or solidifies into a billet shell with a liquid core before leaving the crystallizer, and continuously casts a slab with a thickness of 1.2 to 45mm under the push of the subsequent melt. The slab enters the roll between the metal solidus temperature and the recrystallization temperatur...
Claims
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