Magnesium alloy coiled material production device

Abstract

The utility model provides a magnesium alloy coiled material production device, which belongs to the technical field of metal material production equipment and comprises a melting mechanism, a melt conveying mechanism, a strip production mechanism and a coiled material processing mechanism. The melting mechanism comprises a transversely arranged preheating channel and a melting furnace connected with the preheating channel; the melt conveying mechanism comprises a casting furnace connected with the melting furnace through a first siphon pipeline, a standing furnace connected with the casting furnace through a second siphon pipeline, and a heating box connected with the standing furnace; the strip production mechanism comprises a casting nozzle arranged at a slurry flowing opening of the heating box, a casting and rolling machine arranged at a liquid outlet of the casting nozzle and a guide-out roller arranged at an outlet of the casting and rolling machine; the coiled material processing mechanism comprises a strip conveying line in butt joint with the leading-out roller and a coiling machine arranged at an outlet of the conveying line. The magnesium alloy coiled material production device can solve the problems that in the prior art, a traditional magnesium alloy coiled material production process is complex in process, low in continuous degree, high in product impurity content, low in finished product rate and the like.

Description

TECHNICAL FIELD

[0001] The utility model relates to metal material production equipment technical field more specifically, relate to a magnesium alloy coiled material production device. BACKGROUND

[0002] Magnesium alloy is the lightest practical metal that can be used as structural material, and the strength and rigidity of magnesium alloy are obviously better than plastic, and the impact resistance is better than aluminum alloy, and magnesium alloy can be recycled and used as green environmental protection material, based on the characteristics of magnesium alloy products, and the concept of lightweight downstream products, the market demand of magnesium alloy products is no longer limited to aviation, aerospace, transportation, chemical industry, rocket and other industrial departments, and the greater market demand comes from automobile, communication electronics, 3C industry.

[0003] At present, magnesium alloy products mainly concentrate on castings, and the production capacity of composite materials and wide strip materials is relatively weak. Due to the immaturity of the process, the width of the cast rolling strip is mainly below 1000mm, the production efficiency is low, and the product quality is poor. In traditional rolling, magnesium alloy cast rolling plate is generally obtained by multiple heating rolling of flat ingot, and the process is complex, the degree of continuity is low, the production cost is high, and the yield is low, it is difficult to form large-scale production, and it is difficult to meet the continuous production demand of wide magnesium alloy coiled material. SUMMARY

[0004] In view of the above problems, the purpose of the utility model is to provide a magnesium alloy coiled material production device to solve the problems of complex process, low degree of continuity and high impurity content in products in the traditional magnesium alloy coiled material production process in the prior art, which leads to low yield.

[0005] The magnesium alloy coiled material production device provided by the utility model relates to a magnesium alloy coiled material production device, which comprises a melting mechanism, a molten liquid conveying mechanism, a strip production mechanism and a coiled material processing mechanism.

[0006] The melting mechanism comprises a preheating channel arranged transversely and a melting furnace connected with the discharge port of the preheating channel through a feeding pipeline;

[0007] The molten liquid conveying mechanism comprises a casting furnace connected with the liquid layer of the melting furnace through a first siphon pipeline, a static furnace connected with the middle layer of the casting furnace through a second siphon pipeline, and a heating box connected with the discharge port of the static furnace through a liquid pipeline with a mechanical pump;

[0008] The strip production mechanism comprises a casting nozzle arranged at the flow slurry port of the heating box, a casting rolling mill arranged at the liquid outlet of the casting nozzle, and a guide roller arranged at the outlet of the casting rolling mill; the liquid outlet of the casting nozzle is butt jointed with the casting rolling mill.

[0009] The coiled material processing mechanism comprises a strip conveying line and a coiler arranged at the outlet of the strip conveying line, the strip conveying line comprises an inlet pinch roll and an outlet diverting pinch roll arranged at the outlet side of the inlet pinch roll, the coiler is arranged at the outlet side of the outlet diverting pinch roll, and a coiled material trolley is arranged at the outlet of the coiler.

[0010] In addition, preferably, a lifting device is connected to the preheating channel, a temperature detection device is arranged on the preheating channel, and the lifting control system of the lifting device is connected to the temperature detection device.

[0011] In addition, preferably, a first temperature measuring element is arranged in the melting furnace, a second temperature measuring element is arranged in the casting furnace, and a third temperature measuring element is arranged in the holding furnace.

[0012] In addition, preferably, a first heating structure is arranged on the outer side wall of the first siphon pipe, and a second heating structure is arranged on the outer side wall of the second siphon pipe.

[0013] In addition, preferably, the casting and rolling machine is arranged in a downward inclined manner from the outlet to the inlet, and the inclination angle is 15°.

[0014] In addition, preferably, a fume hood is arranged above the outlet of the outlet roller along the strip conveying direction, and the fume hood is arranged above the strip conveying line.

[0015] In addition, preferably, a thickness gauge, a trimming shears, a scrap shears and a cross-cut shears are arranged on the strip conveying line along the strip conveying direction in sequence.

[0016] In addition, preferably, the coiled material processing mechanism further comprises a strip thickness master controller, and the strip thickness master controller is connected to the thickness gauge and the casting and rolling roll gap control system of the casting and rolling machine.

[0017] In addition, preferably, a coiler is arranged at the outlet of the coiler.

[0018] In addition, preferably, the coiled material trolley comprises a trolley body, a moving mechanism arranged at the bottom of the trolley body, and a carrier roller arranged at the top of the trolley body.

[0019] From the above technical solutions can be known, the magnesium alloy coiled material production device provided by the utility model, through the preheating channel of horizontal setting preheats the magnesium alloy ingot, to reach the hourly output requirement, realize the continuous production of large batch; through the structural design of the first siphon pipe, the second siphon pipe and the standing furnace, the magnesium liquid composition before casting and rolling is uniform and clean, so that the magnesium alloy cast and rolled plate strip of high quality is obtained; the utility model through the overall structural design of the melting mechanism, the molten metal conveying mechanism, the strip production mechanism and the coiled material processing mechanism, makes the magnesium alloy ingot pass through the processes of preheating, melting, standing, casting and rolling, coiled material processing and the like in turn, produces the wide coiled material continuously from the magnesium alloy ingot, simplifies the traditional process, greatly improves the production efficiency and the yield, saves the multiple heating and rolling process of the cast blank in the traditional process, and the product can be produced on a large scale and commercially, the strip width can reach 2000mm at the maximum, if the subsequent continuous warm rolling and finishing are equipped, the utility model can be widely applied in the field of traffic light weight, and has important significance for promoting the energy saving and emission reduction of the rail transit, automobile and other industries. BRIEF DESCRIPTION OF DRAWINGS

[0020] Other objects and results of the utility model will be more apparent and easy to understand through the following description in combination with the drawings and with the more comprehensive understanding of the utility model.

[0021] Figure 1 It is a structure schematic view of the magnesium alloy coiled material production device according to the utility model embodiment;

[0022] Figure 2 It is a structure schematic view of the melting mechanism and the molten metal conveying mechanism according to the utility model embodiment;

[0023] Figure 3 It is a structure schematic view of the strip production mechanism according to the utility model embodiment;

[0024] Figure 4 It is a structure schematic view of the coiled material processing mechanism according to the utility model embodiment;

[0025] Figure 5 It is a flow chart of the magnesium alloy coiled material produced by the magnesium alloy coiled material production device provided by the utility model embodiment;

[0026] Figure 6 It is a flow chart of the magnesium alloy coiled material produced by the magnesium alloy coiled material production device provided by the utility model embodiment.

[0027] In the drawings, 11-preheating channel, 12-feeding pipe, 13-melting furnace, 21-first siphon pipe, 22-casting furnace, 23-second siphon pipe, 24-static furnace, 25-mechanical pump, 26-liquid pipe, 27-heating box, 31-casting nozzle, 32-casting mill, 33-lead-out roller, 41-coiler, 42-inlet pinch roller, 43-outlet turning pinch roller, 44-gauge, 45-edge trimmer, 46-edge scrap shears, 47-cross-cut shears, 51-first temperature measuring element, 52-second temperature measuring element, 53-third temperature measuring element, 6-fume hood, 7-coiled material trolley.

[0028] The same reference numbers in all the drawings indicate similar or corresponding features or functions. DETAILED DESCRIPTION

[0029] In view of the foregoing, in the prior art, the conventional magnesium alloy coiled material production process has the problems of complicated process, low degree of continuity and high impurity content in the product, resulting in low finished product rate, and the like, and a magnesium alloy coiled material production device is provided.

[0030] The specific embodiments of the magnesium alloy coiled material production device provided by the present application will be described in detail below with reference to the drawings.

[0031] In order to illustrate the magnesium alloy coiled material production device provided by the present application, Figure 1 The structure of the magnesium alloy coiled material production device according to the embodiment of the present application is shown; Figure 2 The structure of the melting mechanism and the molten liquid conveying mechanism according to the embodiment of the present application is shown; Figure 3 The structure of the strip production mechanism according to the embodiment of the present application is shown; Figure 4 The structure of the coiled material processing mechanism according to the embodiment of the present application is shown; Figure 5 The process of producing the magnesium alloy coiled material by using the magnesium alloy coiled material production device provided by the embodiment of the present application is shown; Figure 6 The process of producing the magnesium alloy coiled material by using the magnesium alloy coiled material production device provided by the embodiment of the present application is shown.

[0032] As Figures 1 to 4 As shown in the drawings, the magnesium alloy coiled material production device provided by the present application comprises a melting mechanism, a molten liquid conveying mechanism, a strip production mechanism and a coiled material processing mechanism; wherein,

[0033] The melting mechanism comprises a preheating channel 11 arranged transversely and a melting furnace 13 connected with the discharge port of the preheating channel 11 through a feeding pipe 12;

[0034] The molten liquid conveying mechanism comprises a casting furnace 22 connected with the liquid layer of the melting furnace 13 through a first siphon pipe 21, a static furnace 24 connected with the intermediate layer of the casting furnace 22 through a second siphon pipe 23, and a heating box 27 connected with the discharge port of the static furnace 24 through a liquid pipe 26 with a mechanical pump 25.

[0035] The strip production mechanism comprises a casting nozzle 31 arranged at the flow slurry port of the heating box 27, a casting and rolling machine 32 arranged at the liquid outlet of the casting nozzle 31, and a guide-out roller 33 arranged at the outlet of the casting and rolling machine 32; the liquid outlet of the casting nozzle 31 is butted with the casting and rolling roller gap of the casting and rolling machine 32.

[0036] The coiled material processing mechanism comprises a strip conveying line butted with the outlet of the guide-out roller 33 and a coiling machine 41 arranged at the outlet of the strip conveying line; the strip conveying line comprises an inlet pinch roller 42 butted with the outlet of the guide-out roller 33 and an outlet turning pinch roller 43 arranged at the outlet side of the inlet pinch roller 42; the coiling machine 41 is arranged at the outlet side of the outlet turning pinch roller 43; a coiled material trolley 7 is arranged at the outlet of the coiling machine 41.

[0037] It should be noted that the preheating channel 11 in the utility model is provided with heating structures such as electromagnetism or resistance, so as to achieve the preheating effect, and the utility model does not make special limitation on this.

[0038] The magnesium alloy ingot is preheated through the transversely arranged preheating channel 11, so as to achieve the hourly output requirement and realize the continuous production of large batches; the structure design of the first siphon pipe 21, the second siphon pipe 23 and the static furnace 24 makes the magnesium liquid before casting and rolling uniform and clean, so that the magnesium alloy casting and rolling plate strip with high quality is obtained; the whole structure design of the melting mechanism, the molten liquid conveying mechanism, the strip production mechanism and the coiled material processing mechanism in the utility model makes the magnesium alloy ingot pass through the processes of preheating, melting, static, casting and rolling and coiled material processing in sequence, and the magnesium alloy ingot is continuously produced into wide coiled material, the traditional process is simplified, the production efficiency and the yield are greatly improved, the process of repeatedly heating and rolling of the casting blank in the traditional process is saved, and the product can be produced on a large scale and commercially; the maximum width of the strip can reach 2000mm, and if the subsequent continuous warm rolling and finishing are equipped, the utility model can be widely applied in the field of light weight of transportation, and has important significance for promoting energy saving and emission reduction of rail transportation and automobile industries.

[0039] As a preferred scheme of the utility model, a lifting device is connected with the preheating channel 11, a temperature detection device is arranged on the preheating channel 11, and the lifting control system of the lifting device is signal connected with the temperature detection device.

[0040] Specifically, the temperature detection device can be a thermocouple, a temperature sensor or the like, which is used to measure the temperature of the preheating channel 11 and send a signal to the lifting control system of the lifting device according to a preset temperature, so that the lifting control system automatically lifts the preheating channel 11 when the temperature of the preheating channel 11 reaches the preset temperature, so as to facilitate the addition of the preheated material in the preheating channel 11 to the melting furnace 13 through the feeding pipe 12 for melting. The lifting device can be a small crane, a mechanical arm or the like, which is not particularly limited in the utility model.

[0041] As a preferred scheme of the utility model, the melting furnace 13 is provided with a first temperature measuring element 51; and / or the casting furnace 22 is provided with a second temperature measuring element 52; and / or the static furnace 24 is provided with a third temperature measuring element 53.

[0042] Specifically, the first temperature measuring element 51, the second temperature measuring element 52 and the third temperature measuring element 53 can all be a thermocouple, a temperature sensor or the like, which is not particularly limited in the utility model, and is used to monitor the temperature value of the molten liquid in the transmission process.

[0043] As a preferred scheme of the utility model, the first heating structure is arranged on the outer side wall of the first siphon pipe 21; and / or the second heating structure is arranged on the outer side wall of the second siphon pipe 23.

[0044] Specifically, the first heating structure and the second heating structure can be a resistance heating ring, an electromagnetic heating structure or the like, which is used to heat and keep warm the solution to ensure its fluidity.

[0045] As a preferred scheme of the utility model, the casting and rolling machine 32 is arranged in a downward inclined manner from the outlet to the inlet, and the inclination angle is 15°.

[0046] Specifically, the casting and rolling machine 32 adopts a 15° backward inclination structure, which prevents the magnesium liquid from flowing back into the heating box 27 when the vertical plate fails or stops.

[0047] As a preferred scheme of the utility model, a smoke hood 6 is arranged above the lead-out roller 33 along the strip conveying direction; and the smoke hood 6 is arranged above the strip conveying line.

[0048] Specifically, the smoke hood 6 is preferably a movable smoke hood, for example, a sliding track is arranged above the strip conveying line, and the smoke hood 6 is slidably arranged on the sliding track, so that the smoke generated in the initial stage of the vertical plate can be fully collected, and the energy saving and environmental protection requirements can be met.

[0049] As a preferred scheme of the utility model, a thickness gauge 44, an edge trimmer 45, a scrap edge shear 46 and a cross-cut shear 47 are sequentially arranged on the strip conveying line along the strip conveying direction.

[0050] Specifically, the cast-rolled plate slides from the threading guide plate table into the thickness gauge 44 and the compression roller, the thickness gauge 44 measures the thickness of the strip, then the edge trimmer 45 and the scrap shears 46 cut the two sides of the strip, each side can be cut by 50mm, to prevent cracks in the subsequent rolling process, the cross-cut shears 47 continuously cut the strip head part until the qualified product is obtained, and the coil clamp can clamp the strip head.

[0051] As a preferred scheme of the utility model, the strip thickness master control machine is connected with the thickness gauge 44 and the roll gap control system of the casting and rolling mill 32.

[0052] Specifically, the measured value of the thickness gauge 44 forms a closed loop feedback with the roll gap control system of the casting and rolling mill, and the roll gap of the casting and rolling mill is adjusted in time according to the thickness of the strip, so that the thickness of the product meets the preset thickness requirement.

[0053] As a preferred scheme of the utility model, a coiler is arranged at the outlet of the coiling machine 41.

[0054] Specifically, the coiler is arranged at the outlet of the coiling machine 41, which facilitates pushing the coil out of the outlet of the coiling machine 41.

[0055] As a preferred scheme of the utility model, the coiled material trolley 7 comprises a trolley body, a moving mechanism arranged at the bottom of the trolley body and a supporting roller arranged at the top of the trolley body.

[0056] Specifically, when the coil diameter meets the requirement, the coiled material trolley 7 can be opened to the lower side of the coil, and the coil processed by the coiling machine 41 is sent to the next procedure, the moving mechanism is preferably but not limited to a wheel, a slider matched with a moving track or the like, and the utility model does not make special limitation thereto, and the supporting roller arranged at the top of the trolley body is used to support the coil.

[0057] As shown in Figure 5 and Figure 6 Commonly shown, the process of producing the magnesium alloy coiled material by adopting the magnesium alloy coiled material production device provided in the embodiment of the utility model comprises the following steps:

[0058] Step S1, the magnesium alloy ingot which is pre-cleaned on the surface is sent into the pre-heating channel 11, a hot air convection heating mode is adopted, the internal temperature of the magnesium alloy ingot reaches a first preset temperature, then the magnesium alloy ingot is put into the melting furnace 13 through the feeding pipeline 12, the magnesium alloy ingot is subjected to melting treatment, and magnesium liquid is obtained;

[0059] Step S2, the magnesium liquid in the liquid layer of the melting furnace 13 is transported into the casting furnace 22 by the first siphon pipeline 21 by using the siphon principle;

[0060] Step S3, when the magnesium liquid level in the casting furnace 22 reaches the preset height, the magnesium liquid in the middle layer of the casting furnace 22 is transported to the static furnace 24 by the second siphon pipe 23 through the siphon principle;

[0061] Step S4, the magnesium liquid in the static furnace 24 is pumped to the heating box 27 through the liquid pipe 26 with the mechanical pump 25, the temperature of the magnesium liquid in the heating box 27 is maintained at the second preset temperature, and the liquid level in the heating box 27 is controlled at the preset liquid level according to the flow of the magnesium liquid in the heating box 27 and the surface tension at the outlet of the casting nozzle 31;

[0062] Step S5, the magnesium liquid in the heating box 27 is distributed to the casting roll gap of the casting mill 32 through the casting nozzle 31, and the magnesium liquid is processed into a solid strip-shaped material by passing cooling water to the casting roll;

[0063] Step S6, the strip-shaped material is sent to the strip conveying line through the leading-out roll 33, and the strip-shaped material is sent to the winding machine 41 through the strip conveying line;

[0064] Step S7, the strip-shaped material is processed into a magnesium alloy coil with a preset winding diameter by the winding machine 41.

[0065] Wherein, the first preset temperature is 100-200℃; and / or, the temperature in the melting furnace 13 is 690-720℃; and / or, the second preset temperature is 700℃±10℃.

[0066] Wherein, during the process of melting the magnesium alloy ingot by feeding the magnesium alloy ingot into the melting furnace 13 through the feeding pipe 12, the first protective gas is continuously introduced into the melting furnace 13;

[0067] During the process of transporting the magnesium liquid in the liquid layer of the melting furnace 13 to the casting furnace 22 by the first siphon pipe 21 through the siphon principle, the second protective gas is continuously introduced into the casting furnace 22;

[0068] During the process of transporting the magnesium liquid in the middle layer of the casting furnace 22 to the static furnace 24 by the second siphon pipe 23 through the siphon principle, the third protective gas is continuously introduced into the static furnace 24;

[0069] The first protective gas is a mixed gas of Ar, CO2, SO2 and dry air in any proportion;

[0070] The second protective gas is a mixed gas of Ar, CO2, SO2 and dry air in any proportion;

[0071] The third protective gas is a mixed gas of Ar, CO2, SO2 and dry air in any proportion.

[0072] Wherein, after the magnesium alloy strip material is processed into a preset roll diameter by the coiler 41, it further comprises:

[0073] The magnesium alloy strip material is weighed, and a roll core is sleeved on the magnesium alloy strip material meeting the preset weight requirement, so as to obtain a magnesium alloy strip material with a roll core;

[0074] The magnesium alloy strip material with the roll core is placed in a heating furnace, and is subjected to horizontal heating and homogenization annealing treatment at 450℃±5℃;

[0075] The magnesium alloy strip material after the annealing treatment is sequentially subjected to continuous warm rolling and finishing.

[0076] It can be seen from the above specific embodiments that the magnesium alloy strip material production device provided by the utility model realizes large-batch continuous production by preheating the magnesium alloy ingot through the transversely arranged preheating channel to meet the hourly output requirement; the magnesium liquid before casting and rolling is uniform and clean through the structural design of the first siphon pipe, the second siphon pipe and the static furnace, so that the magnesium alloy cast and rolled plate strip with high quality is obtained; the utility model is designed by the overall structural design of the melting mechanism, the molten liquid conveying mechanism, the strip material production mechanism and the roll material processing mechanism, so that the magnesium alloy ingot sequentially passes through the processes of preheating, melting, static, casting and rolling, roll material processing and the like, and the magnesium alloy ingot is continuously produced into a wide roll material, the traditional process is simplified, the production efficiency and the yield are greatly improved, the multiple heating and rolling process of the cast blank in the traditional process is saved, the product can be mass-produced and commercialized, the maximum width of the strip material can reach 2000mm, and if the subsequent continuous warm rolling and finishing are equipped, the utility model can be widely applied in the field of light weight of transportation, and has important significance for promoting energy saving and emission reduction of rail transportation, automobile and the like.

[0077] The magnesium alloy strip material production device according to the utility model is described above with reference to the drawings in an exemplary manner. However, those skilled in the art should understand that various improvements can be made to the magnesium alloy strip material production device according to the utility model without departing from the content of the utility model. Therefore, the protection scope of the utility model should be determined by the content of the appended claims.

Claims

1. A magnesium alloy coil production apparatus, characterized in that, The magnesium alloy strip production device comprises a melting mechanism, a molten metal conveying mechanism, a strip production mechanism and a coiled strip processing mechanism. The melting mechanism comprises a preheating channel arranged transversely and a melting furnace connected with a discharge port of the preheating channel through a feeding pipeline. The molten metal conveying mechanism comprises a casting furnace connected with a liquid layer of the melting furnace through a first siphon pipeline, a static furnace connected with an intermediate layer of the casting furnace through a second siphon pipeline, and a heating box connected with a discharge port of the static furnace through a liquid pipeline with a mechanical pump. The strip production mechanism comprises a casting nozzle arranged at a flow slurry port of the heating box, a casting and rolling machine arranged at a liquid outlet of the casting nozzle, and a guide-out roller arranged at an outlet of the casting and rolling machine. The coiled strip processing mechanism comprises a strip conveying line connected with an outlet of the guide-out roller and a coiler arranged at an outlet of the strip conveying line.

2. The magnesium alloy strip production device according to claim 1, wherein a lifting device is connected to the preheating channel, a temperature detection device is arranged on the preheating channel, and a lifting control system of the lifting device is connected with the temperature detection device.

3. The magnesium alloy strip production device according to claim 1, wherein a first temperature measuring element is arranged in the melting furnace; and / or a second temperature measuring element is arranged in the casting furnace; and / or a third temperature measuring element is arranged in the static furnace.

4. The magnesium alloy strip production device according to claim 1, wherein a first heating structure is arranged on an outer side wall of the first siphon pipeline; and / or a second heating structure is arranged on an outer side wall of the second siphon pipeline.

5. The magnesium alloy strip production device according to claim 1, wherein the casting and rolling machine is arranged downwardly from an outlet to an inlet at an inclination angle of 15°.

6. The magnesium alloy strip production device according to claim 1, wherein a fume hood is arranged above the guide-out roller along a strip conveying direction; and the fume hood is arranged above the strip conveying line.

7. The magnesium alloy strip production device according to claim 1, wherein a thickness gauge, a trimming shears, a scrap edge shears and a cross-cut shears are arranged on the strip conveying line along the strip conveying direction in sequence. The device further comprises a strip thickness master control machine. The strip thickness master control machine is connected with the thickness gauge and a casting and rolling roller gap control system of the casting and rolling machine respectively.

9. The magnesium alloy strip production device according to claim 1, wherein a coiler pusher is arranged at an outlet of the coiler.

10. The magnesium alloy strip production device according to claim 1, wherein the coiled strip trolley comprises a trolley body, a moving mechanism arranged at a bottom of the trolley body, and a supporting roller arranged at a top of the trolley body. ​ ​ ​ ​ ​ 8. The magnesium alloy coil production apparatus according to claim 7, characterized by ​ ​ ​ ​ ​ ​

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