Structure for preventing cooling pipe of water-cooling iron casting from being melted through

Abstract

The invention discloses a structure for preventing a cooling pipe of a water-cooled iron casting from being molten through, which comprises a cooling pipe with a snakelike structure, the cooling pipe is provided with a plurality of bent parts, and the structure is characterized by further comprising a pipe penetration prevention chilling device arranged on each bent part; and the anti-pipe-penetration chilling device is used as a part of a casting after being melted. According to the pipe penetration prevention chilling device, equivalently, a firewall is arranged on the outer side of the bent part of the cooling pipe, so that thermal shock of molten iron to the outer side of the bent part of the cooling pipe is effectively resisted, and finally the cooling pipe is effectively prevented from being molten through.

Description

Technical Field

[0001] The invention relates to the technical field of water-cooled iron casting equipment, and in particular to a structure for preventing a cooling pipe of a water-cooled iron casting from being melted through. Background Art

[0002] During the pouring process of water-cooled cast iron, the cooling pipe is continuously subjected to the thermal shock of the molten iron, which can easily cause quality accidents such as pipe penetration. As long as one cooling pipe is penetrated, the entire casting will be scrapped. So far, there is no effective measure to prevent the cooling pipe of water-cooled cast iron from being melted through.

[0003] There are literatures introducing measures to prevent cooling pipes from being melted through in water-cooled steel castings. These measures can be used as a reference and promoted for water-cooled iron castings. The cooling pipe is filled with furan resin sand or other quenching materials. The quenching materials instantly store heat when the casting is poured, which can effectively prevent or reduce the melting of the cooling pipe. The quenching materials are cleaned up after the casting is unpacked. The disadvantages of this method are: (1) The operation of filling the cooling pipe with quenching materials is complicated and requires a lot of time and manpower; (2) It is difficult to determine whether the filling is tight and there is still a risk of puncture; (3) The filled quenching materials need to be cleaned out after the casting is unpacked, which is time-consuming and labor-intensive; (4) Both the filling and cleaning operations inevitably cause pollution to the surrounding environment and also have an impact on the health of workers.

[0004] Chinese invention patent application publication number CN101664800A discloses a cooling wall combined with steel plate and ductile iron and a manufacturing method thereof, wherein the steel plate is composited with the ductile iron body, several bolts are cast into the ductile iron body, screw holes corresponding to the bolts are arranged on the bottom and side steel plates, a layer of heat-conducting material is coated on the ductile iron body, the ductile iron body is composited with the steel plate and fastened by several bolts and nuts, so that the ductile iron body and the steel plate are connected as one. Several cooling pipes are cast in the composite of ductile iron and steel plate. The manufacturing method is to cast several bolts into the ductile iron body, drill holes on the bottom and side steel plates according to the bolt positions on the cast iron body, then coat a layer of heat-conducting material on the cast iron body, and then cover the steel plate, fasten with nuts, and connect with the steel plate as one. The advantages of the present invention are that the cooling wall has a thin wall thickness and good cooling effect; it can adapt to irregular shape requirements; and it increases the service life of the product.

[0005] Chinese invention patent application publication number CN107254559A discloses a cooling wall and a processing method thereof, which belongs to the field of cooling walls. The processing technology of the present invention comprises the following steps: 1. Making a wooden mold for the cooling wall; 2. Making a sand mold and arranging cooling water pipes: placing the wooden mold for the cooling wall into a sand box, vibrating the molding sand to form a mold, taking out the wooden mold for the cooling wall to form a mold cavity, and arranging the cooling water pipes in the mold cavity; the cooling water pipes include a first cooling water pipe, a second cooling water pipe and a third cooling water pipe; 3. Injecting molten steel into the mold cavity to start casting; 4. Cooling and forming after casting. The present invention overcomes the shortcoming that the cooling water pipes of the cooling wall are prone to melting through, and the cooling effect is enhanced by laying multiple layers of cooling pipes in the cooling wall, and the processing process is strictly controlled to effectively prevent the cooling water pipes from melting through, so that the cooling water pipes can achieve the technical effect of "melting without melting" and "seamless fusion".

[0006] The structures for preventing the cooling tube from melting through in the above two patent applications have the problems of complex structure and high cost. Summary of the invention

[0007] The technical problem to be solved by the present invention is to provide a structure with simple structure and low cost to prevent the cooling pipe of a water-cooled cast iron part from being melted through in view of the shortcomings of the existing solution for preventing the cooling pipe from being melted through.

[0008] The technical problem to be solved by the present invention can be achieved by the following technical solutions:

[0009] A structure for preventing a cooling pipe of a water-cooled cast iron part from being melted through comprises a cooling pipe with a serpentine structure, wherein the cooling pipe has a plurality of bends and is characterized in that it also comprises an anti-penetration pipe quenching device installed on each bend; the anti-penetration pipe quenching device serves as a part of the casting after being melted.

[0010] In a preferred embodiment of the present invention, the anti-penetration pipe quenching device includes an arc-shaped baffle plate whose curvature is consistent with the curvature of the curved portion of the cooling pipe, a C-shaped clamp whose curvature of the longitudinal section is consistent with the curvature of the curved portion, bolts and nuts, the arc-shaped baffle plate is welded and fixed on the outer surface of the horizontal side of the C-shaped clamp, the C-shaped clamp is sleeved on the curved portion of the cooling pipe, and the bolt passes through a pair of vertical sides of the C-shaped clamp and is locked by a nut.

[0011] In a preferred embodiment of the present invention, the lateral side of the C-shaped clip and the arc-shaped baffle are located outside the curved portion of the cooling pipe.

[0012] Due to the adoption of the above technical solution, the anti-penetration tube quenching device of the present invention is equivalent to setting a "firewall" on the outside of the curved portion of the cooling tube, thereby effectively resisting the thermal shock of the molten iron on the outside of the curved portion of the cooling tube, and ultimately effectively preventing the cooling tube from being melted through.

[0013] The present invention has the following advantages:

[0014] (1) The outer side of the bend of the cooling pipe is the thinnest part of the cooling pipe wall, which is also the weakest part of the cooling pipe and is most likely to be penetrated by molten iron. As long as the bend of the cooling pipe is protected, the purpose of protecting the entire cooling pipe can be achieved.

[0015] (2) The anti-penetration quenching device is installed only on the outside of the curved part of the cooling pipe, which is the most economical, simplest and lowest cost.

[0016] (3) The anti-penetration quenching device is easy to install, does not require special technology, and is less time-consuming.

[0017] (4) After the casting is poured, the anti-penetration tube quenching device is melted into one with the casting, saving the time of cleaning.

[0018] (5) Although the anti-penetration quenching device requires production costs, as a part of the casting, it can reduce the consumption of molten iron.

[0019] The invention has been tested and applied in practice, and the use effect is very successful, and the anti-penetration effect reaches 100%. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the anti-penetration pipe quenching device of the present invention applied to a cooling pipe.

[0021] Figure 2 for Figure 1 AA section view. DETAILED DESCRIPTION

[0022] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0023] See also Figure 1 and Figure 2 , a structure for preventing a cooling pipe of a water-cooled cast iron part from being melted through is shown in the figure, comprising a cooling pipe 10 with a serpentine structure, and the cooling pipe 10 has a plurality of bends 11.

[0024] The present invention is characterized in that it also includes an anti-penetration quenching device 20 installed on each curved portion 11; the anti-penetration quenching device 20 is used as a part of the casting after being melted.

[0025] The anti-penetration pipe quenching device 20 includes an arc-shaped baffle 21 whose curvature is consistent with the curvature of the curved portion 11, a C-shaped clamp 22 whose curvature of the longitudinal section is consistent with the curvature of the curved portion 11, bolts 23 and nuts 24. The arc-shaped baffle 21 is fixed on the outer surface of the horizontal side 12a of the C-shaped clamp 12, the C-shaped clamp 22 is sleeved on the curved portion 11 of the cooling pipe 10, and the horizontal side 22a of the C-shaped clamp 22 and the arc-shaped baffle 21 are located on the outer side of the curved portion 11 of the cooling pipe 10; the bolt 23 passes through a pair of vertical sides 22b, 22c of the C-shaped clamp 22 and is locked by the nut 24.

Claims

1. A structure for preventing a cooling pipe of a water-cooled cast iron part from being melted through, comprising a cooling pipe in a serpentine structure, the cooling pipe having a plurality of curved portions, characterized in that: The invention also comprises an anti-penetration tube quenching device installed on each bending part; the anti-penetration tube quenching device is used as a part of the casting after being melted.

2. A structure for preventing a cooling pipe of a water-cooled cast iron part from being melted through according to claim 1, characterized in that: The anti-penetration pipe quenching device includes an arc-shaped baffle whose curvature is consistent with the curvature of the curved portion of the cooling pipe, a C-shaped clamp whose curvature of the longitudinal section is consistent with the curvature of the curved portion, bolts and nuts, the arc-shaped baffle is fixed on the outer surface of the horizontal side of the C-shaped clamp, the C-shaped clamp is sleeved on the curved portion of the cooling pipe, and the bolt passes through a pair of vertical sides of the C-shaped clamp and is locked by a nut.

3. A structure for preventing a cooling pipe of a water-cooled cast iron part from being melted through according to claim 2, characterized in that: The lateral side of the C-shaped clip and the arc-shaped baffle are located outside the curved portion of the cooling pipe.

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