A crystallizer and horizontal continuous caster unit using the same
A horizontal continuous casting and crystallizer technology, applied in the field of horizontal continuous casting units, can solve the problems of large grains, insufficient plasticity, slow cooling process, etc., and achieve the effect of dense billet structure and good plasticity
Active Publication Date: 2009-07-22
吴江万宝铜带有限公司
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Problems solved by technology
Since the billet must be led from the primary water-cooling system to the secondary water-cooling system in the red-hot state, the billet in the red-hot state will come into contact with air at high temperature and absorb a large amount of oxygen, so oxidation will occur on the surface, affecting Surface finish of billet
At the same time, the interval between two water coolings is long, and the cooling process is relatively slow, so the grains in the billet are large, the plasticity is not good enough, and the structure is not dense enough
Method used
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[0020] Taking cast bright non-oxidized copper strip as an example below, the specific embodiment of the present invention will be described in conjunction with the accompanying drawings:
[0021] as attached figure 1 , attached figure 2 As shown, the crystallizer 100 includes a graphite mold 110 and a water cooling jacket 120 , wherein the water cooling jacket 120 is formed by combining an upper water cooling jacket 128 and a lower water cooling jacket 129 .
[0022] as attached image 3 And attached Figure 5 As shown, a rectangular runner 111 runs through the middle of the graphite mold 110 . The middle part of the water cooling jacket 120 is connected with a mold placement cavity 127 and a steam cavity 121 . The graphite mold 110 is tightly fitted and embedded in the mold placement cavity 127 , so that the flow channel 111 communicates with the steam cavity 121 .
[0023] On the upper water cooling jacket 128 and the lower water cooling jacket 129, a primary water coo...
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Abstract
The invention relates to a crystallizer and a horizontal continuous casting unit using the crystallizer. The crystallizer includes a steam chamber through which the copper billet passes through the water cooling jacket and is connected to the outlet end of the graphite flow channel. The flow area of the steam chamber is greater than or equal to that of the graphite flow channel. flow area. A cooling water nozzle is arranged at the outlet end of the steam chamber, and the cooling water is directly sprayed onto the surface of the copper billet through the nozzle to cool it down to room temperature. When the cooling water contacts the high-temperature billet, it is gasified into water vapor and filled in the steam cavity, which protects the red-hot copper billet from contact with the air, thus avoiding oxidation on the billet surface. The interval between the primary water cooling system and the secondary water cooling system of the crystallizer is small, the cooling time is short, and the quenching makes the inner grain of the billet small, dense in structure and high in plasticity.
Description
technical field [0001] The invention relates to a crystallizer and a horizontal continuous casting unit using the crystallizer Background technique [0002] Existing crystallizers for casting copper strip blanks, tube blanks, billets, etc. all include a primary water cooling system and a secondary water cooling system. The primary water cooling system is indirect cooling, that is, the cooling water does not come into contact with the copper material. The heat conduction between the water cooling jacket and the graphite mold cools the copper water flowing into the graphite flow channel to a solid state, but the temperature of the solid copper billet is still very high, and it is in a red hot state, so it needs to undergo secondary water cooling. The secondary water cooling is carried out by direct water cooling, that is, the cooling water is directly sprayed onto the surface of the billet to be cooled to room temperature. Since the billet must be led from the primary water-c...
Claims
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IPC IPC(8): B22D11/112
Inventor 倪智勇
Owner 吴江万宝铜带有限公司