CN210702430U - Multi-stage cooling crystallizer for zinc white copper horizontal continuous casting unit - Google Patents

Abstract

A multi-stage cooling crystallizer for a zinc white copper horizontal continuous casting unit comprises a primary cooling crystallizer and a secondary cooling crystallizer, wherein the primary cooling crystallizer and the secondary cooling crystallizer are tightly combined into a whole, and the multi-stage cooling crystallizer is characterized in that: the primary cooling crystallizer comprises a primary cooling crystallizer shell component, a crystallizer copper sleeve and a crystallizer primary cooling water jacket. The utility model has the advantages of uniform cooling surface temperature, small casting blank internal stress, flat crystallization line, high casting speed and no cracking phenomenon of the casting blank, and according to metallographic analysis, the casting blank has a central crystallization surface and fine columnar crystal grains, and the casting blank has good quality. The multistage cooling crystallizer is particularly suitable for horizontal continuous casting of the zinc white copper. The crystallizer is an inner sleeve and outer sleeve structure, the inner sleeve and the outer sleeve are connected and formed through bolts, the cooling capacity of a circulation path of cooling water is high, and the crystallizer has the advantages of being excellent, simple and compact in structure, easy to manufacture and convenient to disassemble and assemble.

Description

Multi-stage cooling crystallizer for zinc white copper horizontal continuous casting unit

Technical Field

The utility model belongs to the technical field of the white copper alloy pipe production facility of zinc, specifically be used for the multistage cooling crystallizer of white copper horizontal continuous casting unit.

Background

The crystallizer is an important part of a continuous casting machine, and is a bottom-free copper pipe mold with forced water cooling, which is called the heart of the continuous casting machine. The crystallizer is a continuous copper casting device which receives copper water injected from a tundish and solidifies the copper water into a firm blank shell according to a specified section shape, is the most critical part in a continuous casting machine, and the structure, the material and the performance parameters of the crystallizer play a decisive role in the quality of a casting blank and the production capacity of a casting machine. The head of the dummy bar is the movable inner bottom of the crystallizer when casting, the copper water is injected into the crystallizer and gradually condensed into a blank shell with a certain thickness and continuously pulled out, under the condition of high pulling speed, the blank shell of the initial crystallizer is thin and uneven due to uneven cooling of the crystallizer and the influence of air gap thermal resistance in a copper pipe of the crystallizer, copper leakage is easy to generate, and the copper leakage rate is higher.

Disclosure of Invention

An object of the utility model is to overcome above-mentioned weak point to a multistage cooling crystallizer who is used for horizontal continuous casting unit of zinc white copper is provided, ensures that the cooling is even, and the cooling effect is better, can effectively protect the thin blank shell of crystallizer below, reduces the danger of leaking copper, guarantees the best cooling of continuous casting billet.

The technical scheme of the utility model is that: a multi-stage cooling crystallizer for a zinc white copper horizontal continuous casting unit comprises a primary cooling crystallizer and a secondary cooling crystallizer, wherein the primary cooling crystallizer and the secondary cooling crystallizer are tightly combined into a whole, and the multi-stage cooling crystallizer is characterized in that: the primary cooling crystallizer comprises a primary cooling crystallizer shell component, a crystallizer copper sleeve and a crystallizer primary cooling water jacket, the secondary cooling crystallizer comprises a secondary cooling crystallizer shell component and a crystallizer steel jacket, a primary cooling crystallizer front shell component and a primary cooling crystallizer rear shell component are sleeved on the outer ring of the crystallizer copper sleeve between the primary cooling crystallizer front shell component and the primary cooling crystallizer rear shell component, the outer ring of the crystallizer copper sleeve between the primary cooling crystallizer front shell component and the primary cooling crystallizer rear shell component is sleeved with the crystallizer primary cooling water jacket, a copper sleeve pressing ring is arranged at the top end of the crystallizer copper sleeve and connected with the primary cooling crystallizer front shell component through a bolt, the crystallizer primary cooling water jacket is groove-shaped, a groove wall is arranged in the middle of the groove, the groove wall divides the groove into two parts, a first groove and a second groove are arranged, a cover plate is welded at, the water pipe is total four, two inlet tubes above, two outlet pipes below, the inlet tube is corresponding with the outlet pipe, crystallizer steel jacket outer lane cover is equipped with secondary cooling crystallizer shell subassembly, and bolted connection is passed through on one end of secondary cooling crystallizer shell subassembly and the top of the first cooling crystallizer back shell subassembly, and bolted connection is passed through with the flange to the other end of secondary cooling crystallizer shell subassembly, sets up the central cavity that is used for the storage and circulates the cooling water in the pipe wall of secondary cooling crystallizer shell subassembly, and the central cavity communicates with the cooling water pipe of the cooling water of intaking above, the play water cooling water pipe below.

The utility model has the advantages that: the utility model provides a multistage cooling crystallizer for a zinc white copper horizontal continuous casting unit, which cools the molten copper in the crystallizer copper sleeve once by the flowing cooling water in the crystallizer primary cooling water jacket to generate a blank shell containing the molten copper; the primary cooling blank shell which is just pulled out from the primary cooling crystallizer is secondarily cooled by the flowing cooling water in the central cavity of the secondary cooling crystallizer shell component, so that the cooling of the casting blank is enhanced; therefore, the temperature of the cooling surface is uniform, the internal stress of the casting blank is smaller, the crystallization line is straight, the casting speed is high, the casting blank has no cracking phenomenon, and according to metallographic analysis, the crystal surface of the casting blank is in the center, the crystal grains are fine columnar crystals, and the quality of the casting blank is good. The multistage cooling crystallizer is particularly suitable for horizontal continuous casting of the zinc white copper. The crystallizer is an inner sleeve and outer sleeve structure, the inner sleeve and the outer sleeve are connected and formed through bolts, the cooling capacity of a circulation path of cooling water is high, and the crystallizer has the advantages of being excellent, simple and compact in structure, easy to manufacture and convenient to disassemble and assemble.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Description of reference numerals: 1-a primary cooling crystallizer, 101-a primary cooling crystallizer shell assembly, 102-a crystallizer copper bush, 103-a crystallizer primary cooling water jacket, 104-a primary cooling crystallizer front shell assembly, 105-a primary cooling crystallizer rear shell assembly, 106-a groove wall, 107-a first groove, 108-a second groove, 109-a cover plate, 2-a secondary cooling crystallizer, 201-a secondary cooling crystallizer shell assembly, 202-a crystallizer steel jacket, 203-a central cavity, 204-a water inlet cooling water pipe, 205-a water outlet cooling water pipe, 3-a copper bush pressure ring, 4-a water pipe, 401-a water inlet pipe, 402-a water outlet pipe and 5-a flange.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

As shown in fig. 1, the utility model relates to a multistage cooling crystallizer for horizontal continuous casting unit of zinc white copper, including primary cooling crystallizer 1, secondary cooling crystallizer 2, the two of primary cooling crystallizer 1 and secondary cooling crystallizer 2 closely combines into an organic whole, characterized by: the primary cooling crystallizer 1 comprises a primary cooling crystallizer housing assembly 101, a crystallizer copper bush 102 and a crystallizer primary cooling water jacket 103, the secondary cooling crystallizer 2 comprises a secondary cooling crystallizer housing assembly 201 and a crystallizer steel jacket 202, a primary cooling crystallizer front housing assembly 104 and a primary cooling crystallizer rear housing assembly 105 are sleeved on the outer ring of the crystallizer copper bush 102, the crystallizer primary cooling water jacket 103 is sleeved on the outer ring of the crystallizer copper bush 102 between the primary cooling crystallizer front housing assembly 104 and the primary cooling crystallizer rear housing assembly 105, a copper bush pressing ring 3 is arranged at the top end of the crystallizer copper bush 102, the copper bush pressing ring 3 is connected with the primary cooling crystallizer front housing assembly 104 through a bolt, the crystallizer primary cooling water jacket 103 is in a groove shape, a groove wall 106 is arranged in the middle of the groove, the groove wall 106 divides the groove into two parts and is provided with a first groove 107 and a second groove, the welding of recess top has apron 109, and the welding has water pipe 4 on apron 109, and water pipe 4 and recess intercommunication, water pipe 4 is total four, two inlet tubes 401 above, two outlet pipes 402 below, and inlet tube 401 is corresponding with outlet pipe 402, crystallizer steel bushing 202 outer lane cover is equipped with secondary cooling crystallizer shell subassembly 201, and bolted connection is passed through on one end of secondary cooling crystallizer shell subassembly 201 and the top of once cooling crystallizer back shell subassembly 105, and the other end and the flange 5 of secondary cooling crystallizer shell subassembly 201 pass through bolted connection, has seted up the central cavity 203 that is used for storing and circulates the cooling water in secondary cooling crystallizer shell subassembly 201's the pipe wall, and central cavity 203 and the cooling water pipe 204 of intaking above, the cooling water pipe 205 intercommunication of following play water.

The utility model discloses a theory of operation does:

the multistage cooling crystallizer is arranged at a copper water outlet of the heat preservation furnace, the copper water is cooled and solidified into a solid slab and continuously extends from the outlet of the multistage cooling crystallizer, the cooling characteristic of the multistage cooling crystallizer determines the key of the quality of the cast slab, and the flowing cooling water in the primary cooling water jacket 103 of the crystallizer cools the copper melt in the copper jacket 102 of the crystallizer for the first time to generate a shell containing the copper melt; the primary cooling blank shell just pulled out from the primary cooling crystallizer 1 is secondarily cooled by the flowing cooling water in the central cavity 203 of the secondary cooling crystallizer shell component 201, so that the cooling of the casting blank is enhanced; therefore, the temperature of the cooling surface is uniform, the internal stress of the casting blank is smaller, the crystallization line is straight, the casting speed is high, the casting blank has no cracking phenomenon, and according to metallographic analysis, the crystal surface of the casting blank is in the center, the crystal grains are fine columnar crystals, and the quality of the casting blank is good. The multistage cooling crystallizer is particularly suitable for horizontal continuous casting of the zinc white copper. The crystallizer is an inner sleeve and outer sleeve structure, the inner sleeve and the outer sleeve are connected and formed through bolts, the cooling capacity of a circulation path of cooling water is high, and the crystallizer has the advantages of being excellent, simple and compact in structure, easy to manufacture and convenient to disassemble and assemble.

Claims (1)

1. A multistage cooling crystallizer for horizontal continuous casting unit of zinc white copper, including once cooling crystallizer (1), secondary cooling crystallizer (2), the two closely combines integratively of once cooling crystallizer (1) and secondary cooling crystallizer (2), characterized by: the primary cooling crystallizer (1) comprises a primary cooling crystallizer shell component (101), a crystallizer copper bush (102) and a crystallizer primary cooling water jacket (103), the secondary cooling crystallizer (2) comprises a secondary cooling crystallizer shell component (201) and a crystallizer steel sleeve (202), a primary cooling crystallizer front shell component (104) and a primary cooling crystallizer rear shell component (105) are sleeved on the outer ring of the crystallizer copper bush (102) between the primary cooling crystallizer front shell component (104) and the primary cooling crystallizer rear shell component (105), the primary cooling water jacket (103) is sleeved on the outer ring of the crystallizer copper bush (102), a copper bush pressing ring (3) is arranged at the top end of the crystallizer copper bush (102), the copper bush pressing ring (3) is connected with the primary cooling crystallizer front shell component (104) through bolts, and the crystallizer primary cooling water jacket (103) is groove-shaped, the middle of the groove is provided with a groove wall (106), the groove wall (106) divides the groove into two parts, the groove is provided with a first groove (107) and a second groove (108), a cover plate (109) is welded at the top of the groove, a water pipe (4) is welded on the cover plate (109), the water pipe (4) is communicated with the groove, the total number of the water pipes (4) is four, the upper part is provided with two water inlet pipes (401), the lower part is provided with two water outlet pipes (402), the water inlet pipes (401) correspond to the water outlet pipes (402), the outer ring of the crystallizer steel sleeve (202) is sleeved with a secondary cooling crystallizer shell assembly (201), one end of the secondary cooling crystallizer shell assembly (201) is connected with the top end of a primary cooling crystallizer rear shell assembly (105) through bolts, the other end of the secondary cooling crystallizer shell assembly (201) is connected with a flange (5) through bolts, the central cavity (203) is communicated with an upper water inlet cooling water pipe (204) and a lower water outlet cooling water pipe (205).

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