Novel casting cooling device

Abstract

The utility model relates to a novel casting cooling device which comprises a cooling fan, a main hose, a flow meter, a main pipeline and a cooling unit, one end of the main hose is connected with an air outlet of the cooling fan, the other end of the main hose is communicated with one end of the main pipeline, the other end of the main pipeline is provided with a main pipeline plug, and the main pipeline plug is connected with the flow meter. A flow meter is mounted on the hose; a plurality of groups of cooling units are sequentially mounted on the main pipeline along the length direction of the main pipeline, and each cooling unit is perpendicular to the main pipeline. The utility model has the advantages that the local looseness of the part is avoided; and meanwhile, the sequential solidification cooling speed of the whole casting is increased, grain refinement is facilitated, defects are reduced, the compactness of the casting is improved, the regional segregation degree is reduced, and the forming efficiency and the forming quality are improved. And the product quality of the casting is greatly improved, the yield of the product is improved, and the production efficiency of the product is further improved.

Description

Technical Field

[0001] The utility model relates to a novel casting cooling device, belonging to the field of casting cooling. Background Art

[0002] The high-temperature melt will release a large amount of heat when solidifying in the shell cavity, so that the hot spot will form a sequential solidification to discharge the heat. Therefore, it is necessary to design a cooling system for the shell cavity to accelerate the cooling of the casting, promote rapid molding of the product, and ensure the quality of the casting. The sequential cooling rate is the basic factor that determines the mechanical properties of the casting. Generally, as the cooling rate increases, the average mechanical properties of the casting are improved. On the one hand, as the cooling rate increases, the crystallization rate of the casting increases, and the intracrystalline structure becomes more refined; on the other hand, as the cooling rate increases, the shell cavity liquid pocket becomes shallower, the transition zone size decreases, the metal shrinkage conditions are improved, the defects such as looseness and pores in the casting are reduced or eliminated, and the density of the casting is improved; in addition, increasing the cooling rate can also refine the size of the primary crystal compound and reduce the degree of regional segregation.

[0003] When the cooling speed is faster, the supercooling of the material will increase accordingly. During solidification, both the nucleation rate and the growth rate will increase, and the increase rate of the nucleation rate is greater than the increase rate of the growth rate, that is, increasing the supercooling will increase the ratio of the nucleation rate / growth rate, the number of grains per unit volume will increase, and the grains will become finer. However, when the supercooling reaches a certain degree, crystallization becomes difficult, and the atoms do not have time to arrange, and solidification forms quasicrystals (without periodicity and symmetry) and amorphous (without periodicity and symmetry). However, too fast cooling may cause cracks in the casting, resulting in waste. Utility Model Content

[0004] In order to overcome the defects of the prior art, the utility model provides a novel casting cooling device. The technical solution of the utility model is:

[0005] A novel casting cooling device comprises a cooling fan, a main hose, a flow meter, a main pipeline and a cooling unit, wherein one end of the main hose is connected to the air outlet of the cooling fan, the other end of the main hose is connected to one end of the main pipeline, the other end of the main pipeline is equipped with a main pipeline plug, and the hose is equipped with a flow meter; along the length direction of the main pipeline, an array of cooling units are installed in sequence on the main pipeline, each of the cooling units is vertically arranged with the main pipeline, each of the cooling units comprises a front branch connecting pipe, a branch hose, a rear branch connecting pipe and a casting placement unit, one end of the front branch connecting pipe is connected to the main pipeline, and the other end is connected to one end of the branch hose, one end of the branch hose is connected to one end of the rear branch connecting pipe, the other end of the rear branch connecting pipe is equipped with a branch plug, and the casting placement unit is arranged at the rear branch connecting pipe, and the casting placement unit corresponds to the air outlet area of ​​the rear branch connecting pipe.

[0006] The casting placement unit includes a square tube and a base plate, and one of the square tubes is arranged on both sides of each of the rear branch connecting tubes. The base plate crosses the rear branch connecting tubes and is installed on the two square tubes. A base middle air outlet and a base side air outlet are arranged on the base plate, and one of the base side air outlets is arranged on both sides of the base middle air outlet, and a casting cooling station is formed between the two base side air outlets; a branch middle air outlet corresponding to the base middle air outlet is arranged on the rear branch connecting tube; and a branch side air outlet corresponding to the base side air outlet.

[0007] A valve is installed on the front branch connecting pipe.

[0008] The diameter of the air outlet in the middle of the bottom plate is smaller than the diameter of the air outlet on the side of the bottom plate.

[0009] The main hose is a DN45 flexible hose.

[0010] The branch hose is a DN20 flexible hose.

[0011] The air outlet on the side of the bottom plate is arranged in a trumpet shape as a whole.

[0012] The advantages of the utility model are: it improves the problem that the high-temperature molten steel after casting generates structural heat nodes due to poor local heat dissipation, resulting in the casting not cooling and solidifying in sequence as a whole, thus avoiding local looseness of parts; at the same time, it improves the sequential solidification cooling speed of the entire casting, helps to refine the grains, reduce defects, improve the compactness of the casting, reduce the degree of regional segregation, and improve the molding efficiency and molding quality. After the cooling device was developed and put into practical use, it greatly improved the product quality of the casting and increased the product yield, thereby improving the production efficiency of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the main structure of the utility model.

[0014] Figure 2 yes Figure 1 Enlarged view of point A in the middle.

[0015] Figure 3 yes Figure 1 Enlarged view of point B in the middle. DETAILED DESCRIPTION

[0016] The present invention is further described below in conjunction with specific embodiments, and the advantages and features of the present invention will become clearer as the description proceeds. However, these embodiments are merely exemplary and do not constitute any limitation to the scope of the present invention. It should be understood by those skilled in the art that the details and forms of the technical solution of the present invention may be modified or replaced without departing from the spirit and scope of the present invention, but these modifications and replacements fall within the scope of protection of the present invention.

[0017] See also Figures 1 to 3 The utility model relates to a novel casting cooling device, comprising a cooling fan 1, a main hose 2, a flow meter 3, a main pipeline 4 and a cooling unit. The main hose 2 is a DN45 flexible hose, one end of the main hose 2 is connected to the air outlet of the cooling fan 1, and the other end of the main hose 2 is connected to one end of the main pipeline 4. The other end of the main pipeline is equipped with a main pipeline plug 7, and the flow meter 3 is installed on the hose 2; along the length direction of the main pipeline 4, the cooling units of the array are installed on the main pipeline 4 in sequence. In this embodiment, taking seven groups as an example, seven groups of castings can be accelerated cooled at the same time to meet the production needs; the wind speed is controllable, and the castings will not be cracked due to rapid cooling; equipped with valves , the cooling treatment of each group of castings can be intervened in time; each of the cooling units is vertically arranged with respect to the main pipeline 4, and each of the cooling units comprises a front branch connecting pipe 5, a branch hose 8, a rear branch connecting pipe 9 and a casting placement unit, and the branch hose 8 is a DN20 flexible hose; one end of the front branch connecting pipe 5 is connected with the main pipeline 4, and the other end is connected with one end of the branch hose 8, one end of the branch hose 8 is connected with one end of the rear branch connecting pipe 9, and the other end of the rear branch connecting pipe 9 is installed with a branch plug 12, and the casting placement unit is arranged at the rear branch connecting pipe 9, and the casting placement unit corresponds to the air outlet area of ​​the rear branch connecting pipe 9.

[0018] The casting placement unit includes a square tube 10 and a base plate 13. A square tube 10 is arranged on both sides of each rear branch connecting tube 9. The base plate 13 spans the rear branch connecting tube 9 and is installed on the two square tubes 10. A base middle air outlet 11 and a base side air outlet 14 are arranged on the base plate 13. A base side air outlet 14 is arranged on both sides of the base middle air outlet 11. A casting cooling station is formed between the two base side air outlets 14. A branch middle air outlet corresponding to the base middle air outlet 11 is arranged on the rear branch connecting tube 9; and a branch side air outlet corresponding to the base side air outlet 14 is arranged.

[0019] A valve 6 is installed on the front branch connecting pipe 5 .

[0020] The diameter of the bottom plate middle air outlet 11 is smaller than the diameter of the bottom plate side air outlet 14. Since the temperature of the inner cavity is relatively high after casting, a larger DC wind speed is required. When the casting is placed on the bottom plate, the middle air outlet 11 of the bottom plate is used for internal cooling. The bottom plate side air outlet 14 is overall trumpet-shaped, so that the bottom plate side air outlet 14 is diffuse in the vertical direction of the bottom plate 13, which not only ensures a larger cooling range, but also alleviates the wind speed and avoids the occurrence of rapid cooling.

[0021] The working principle of the utility model is: the cooling fan 1 and the flow meter 3 are connected by a main hose 2, which can avoid the limitation of space factors. The main pipeline is divided into 7 branches, so 7 groups of cooling stations are formed. A valve 6 is installed on each branch to determine whether to use it according to the actual casting quantity. Figure 1 Shown is a typical station where the casting is placed on air outlets for internal cooling.

[0022] The cooling process of high-temperature molten steel after pouring through the die head 17 and the pouring gate 16 is the process of heat dissipation of the casting until the casting temperature reaches equilibrium with the ambient temperature. At the beginning of pouring, the cooling fan 1 starts to operate, and the compressed air from the DN45 flexible hose, through the flow meter 3 to adjust the wind speed, enters the main pipeline 4. Because of the sealing effect of the main pipeline plug 7, the compressed air is along the front branch connecting pipe 5, through the valve 6, along the DN20 flexible hose, and the rear branch connecting pipe 9 to the bottom plate 13. Because the rear branch connecting pipe 9 is provided with a branch middle air outlet and a branch side air outlet, plus the sealing effect of the branch plug 12, the compressed air can only be blown out from the bottom plate middle air outlet 11 and the bottom plate side air outlet 14, and heat is exchanged with the newly poured casting 15 placed at the bottom plate middle air outlet 11, and the heat of the casting and the surrounding environment is taken away in time, thereby accelerating the cooling speed of the casting.

[0023] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A new type of casting cooling device, characterized in that: It includes a cooling fan, a main hose, a flow meter, a main pipeline and a cooling unit, one end of the main hose is connected to the air outlet of the cooling fan, the other end of the main hose is connected to one end of the main pipeline, the other end of the main pipeline is equipped with a main pipeline plug, and the hose is equipped with a flow meter; along the length direction of the main pipeline, an array of cooling units are installed in sequence on the main pipeline, each of the cooling units is vertically arranged with the main pipeline, each of the cooling units includes a front branch connecting pipe, a branch hose, a rear branch connecting pipe and a casting placement unit, one end of the front branch connecting pipe is connected with the main pipeline, and the other end is connected with one end of the branch hose, one end of the branch hose is connected with one end of the rear branch connecting pipe, the other end of the rear branch connecting pipe is equipped with a branch plug, and the casting placement unit is arranged at the rear branch connecting pipe, and the casting placement unit corresponds to the air outlet area of ​​the rear branch connecting pipe.

2. The novel casting cooling device according to claim 1 is characterized in that: The casting placement unit includes a square tube and a base plate, and one of the square tubes is arranged on both sides of each of the rear branch connecting tubes. The base plate crosses the rear branch connecting tubes and is installed on the two square tubes. A base middle air outlet and a base side air outlet are arranged on the base plate, and one of the base side air outlets is arranged on both sides of the base middle air outlet, and a casting cooling station is formed between the two base side air outlets; a branch middle air outlet corresponding to the base middle air outlet is arranged on the rear branch connecting tube; and a branch side air outlet corresponding to the base side air outlet.

3. The novel casting cooling device according to claim 1 or 2, characterized in that: A valve is installed on the front branch connecting pipe.

4. The novel casting cooling device according to claim 2 is characterized in that: The diameter of the air outlet in the middle of the bottom plate is smaller than the diameter of the air outlet on the side of the bottom plate.

5. The novel casting cooling device according to claim 4 is characterized in that: The main hose is a DN45 flexible hose.

6. The novel casting cooling device according to claim 5 is characterized in that: The branch hose is a DN20 flexible hose.

7. The novel casting cooling device according to claim 4 is characterized in that: The air outlet on the side of the bottom plate is arranged in a trumpet shape as a whole.

Images