Metal casting cooling device

Abstract

The utility model provides a metal casting cooling device which comprises a box body and a box cover, a thermal insulation layer is arranged on the inner wall of the box body, a circle of sealing groove is formed in the top end of the box body in the circumferential direction, sealing sand is contained in the sealing groove, the box cover can be inversely buckled on the sealing sand, an air inlet is formed in the box body, an air inlet pipe is arranged at the air inlet, and an air outlet pipe is arranged at the air outlet. The air inlet pipe is connected with an inflation pump or an inflation bottle. The casting is naturally cooled in an oxygen-free state, and oxidation is effectively prevented.

Description

Technical Field

[0001] This utility model belongs to the field of precision casting technology, and specifically relates to a cooling device for metal castings. Background Technology

[0002] Metal casting involves melting metal into a liquid that meets specific requirements and pouring it into a mold. After cooling and solidification, and cleaning, a casting with a predetermined shape, size, and properties is obtained. From the time the pouring is completed until the casting is removed from the mold, it remains at a high temperature of over 1000 degrees Celsius, making immediate molding impossible. The high-temperature casting must first be cooled. During the solidification process, the casting comes into direct contact with oxygen in the air, making its surface prone to oxidation. Utility Model Content

[0003] To address the technical problem of easy oxidation during the cooling process of metal castings, this invention provides a metal casting cooling device. This device allows the castings to cool naturally in an oxygen-free environment, effectively preventing oxidation.

[0004] To achieve the objective of this utility model, the technical solution adopted by this utility model is as follows:

[0005] A cooling device for metal castings, wherein the inner wall of the box is provided with a heat insulation layer, the top of the box is provided with a sealing groove around the perimeter, the sealing groove is filled with sealing sand, the box cover can be inverted and placed on the sealing sand, the box is provided with an air inlet, an air inlet pipe is provided at the air inlet, and the air inlet pipe is connected to an air pump or an air cylinder.

[0006] The insulation layer described in this utility model is a brick layer.

[0007] The air inlet pipe of this utility model is connected to the air inlet pipe inside the box body. The air inlet pipe is arranged around the circumference of the box body and has multiple air inlet holes evenly distributed on it.

[0008] The sealing sand described in this invention is 30-60 mesh mullite.

[0009] The upper end of the box cover of this utility model is connected to a lifting device.

[0010] Preferably, the lifting device is a hydraulic cylinder or a pneumatic cylinder.

[0011] This utility model also includes a casting hanger that can be placed inside the box.

[0012] The beneficial effects of this utility model are as follows:

[0013] 1. Inert gas is introduced through the air inlet pipe. Due to the gaps in the sealing sand layer, it will not be completely sealed. The air inside the box is slowly squeezed out from the gaps in the sand layer by the incoming inert gas until the box is full of inert gas. This allows the casting to cool naturally in an oxygen-free state, effectively preventing oxidation.

[0014] 2. This utility model uses a sand layer seal at the lid, which allows air to escape from the box while preventing a large loss of inert gas during cooling. In particular, the use of 30-60 mesh mullite sand for sealing promotes the rapid expulsion of air from the box, ensuring the surface quality of the castings.

[0015] 3. Brick layers are used for insulation of the outer shell of the enclosure to prevent burns to staff due to excessively high shell temperature and improve safety. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the metal casting cooling device of this utility model.

[0017] Figure 2 This is a schematic diagram of the metal casting cooling device in Example 2.

[0018] Figure 3 This is a diagram showing the air intake port distribution in Example 2.

[0019] The markings in the diagram are: 1. Box body, 2. Box cover, 3. Insulation layer, 4. Air inlet pipe, 5. Sealing groove, 6. Sealing sand, 7. Casting bracket, 8. Air filling pipe, 81. Air inlet hole. Detailed Implementation

[0020] To more clearly and in detail illustrate the objective technical solution of this utility model, the present utility model will be further described below through relevant embodiments. The following embodiments are merely illustrative of the implementation methods of this utility model and do not limit the scope of protection of this utility model.

[0021] Example 1

[0022] like Figure 1 As shown, a cooling device for metal castings includes a box body 1 and a box cover 2. The inner wall of the box body 1 is provided with a heat insulation layer 3. A sealing groove 5 is provided around the top of the box body 1. The sealing groove 5 is filled with sealing sand 6. The box cover 2 can be inverted and placed on the sealing sand 6. The box body 1 is provided with an air inlet. An air inlet pipe 4 is provided at the air inlet. The air inlet pipe is connected to an air pump.

[0023] The high-temperature casting is placed inside the box 1, and the box cover 2 is inverted on the sealing sand 6. Inert gas is introduced through the air inlet pipe 4. Since there are gaps in the sealing sand layer, it will not be completely sealed. The air inside the box 1 is slowly squeezed out from the gaps in the sand layer by the incoming inert gas until the box 1 is filled with inert gas, so that the casting cools naturally in an oxygen-free state, effectively preventing oxidation.

[0024] Example 2

[0025] This embodiment is based on embodiment 1:

[0026] like Figure 1 As shown, a cooling device for metal castings includes a box body 1 and a box cover 2. The side wall of the box body 1 is provided with a heat insulation layer 3. The top of the box body 1 is provided with a sealing groove 5 around its perimeter. The sealing groove 5 is filled with sealing sand 6. The box cover 2 can be inverted and placed on the sealing sand 6. The box body 1 is provided with an air inlet. An air inlet pipe 4 is provided at the air inlet and the air inlet pipe is connected to an air filling bottle.

[0027] like Figure 2 and Figure 3 As shown, the air inlet pipe 4 is connected to the air inlet pipe 8 inside the box 1. The air inlet pipe 8 is arranged around the circumference of the box 1, and multiple air inlets 81 are evenly distributed on the air inlet pipe 8 to achieve uniform air delivery inside the box 1.

[0028] The upper end of the box cover 2 is connected to a lifting device to realize the automatic lifting and lowering of the box cover 2.

[0029] Example 3

[0030] This embodiment is based on embodiment 1:

[0031] The sealing sand 6 is 30-60 mesh murex. This particle size of murex is used because if the particle size is too small, the air venting time will be too long, and if the particle size is too large, a large amount of inert atmosphere will escape from the large gaps, resulting in waste.

[0032] The insulation layer 3 is a brick layer.

[0033] It also includes a casting hanger 7 that can be placed inside the housing 2.

[0034] The upper end of the box cover 2 is connected to a lifting cylinder.

[0035] The lifting cylinder is a conventional device in this field, and hydraulic lifting can also be used.

[0036] The connection methods not mentioned in this utility model are conventional connection methods such as welding, snap-fitting, riveting, threaded connection or bonding.

[0037] The embodiments described above merely illustrate specific implementations of this utility model, and while the descriptions are detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A cooling device for metal castings, characterized in that: The device includes a box body and a box cover. The inner wall of the box body is provided with a heat insulation layer. A sealing groove is provided around the top of the box body. The sealing groove is filled with sealing sand. The box cover can be inverted and placed on the sealing sand. The box body is provided with an air inlet. An air inlet pipe is provided at the air inlet. The air inlet pipe is connected to an air pump or an air cylinder.

2. The metal casting cooling device according to claim 1, characterized in that: The insulation layer is a brick layer.

3. The metal casting cooling device according to claim 1, characterized in that: The air inlet pipe is connected to the inflation pipe inside the box. The inflation pipe is arranged around the circumference of the box and has multiple air inlets evenly distributed on it.

4. The metal casting cooling device according to claim 1, characterized in that: The sealing sand is 30-60 mesh mullite.

5. The metal casting cooling device according to claim 1, characterized in that: The upper end of the box cover is connected to a lifting device.

6. The metal casting cooling device according to claim 5, characterized in that: The lifting device is a lifting cylinder.

7. The metal casting cooling device according to claim 1, characterized in that: It also includes a casting hanger that can be placed inside the box.

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