Investment cooling device

Abstract

The utility model relates to a fired mold cooling device which comprises a cooling tank body, a chilling block and a casting mold part, cooling liquid is placed in the cooling tank body, the chilling block is placed in the cooling tank body, and one end of the chilling block is in contact with the cooling liquid; and the other end of the chilling block is in contact with the large plane of the casting mold. One end of the chilling block is in direct contact with the cooling liquid, and the other end of the chilling block is in contact with the large plane of the casting mold, so that the large plane of the casting mold is rapidly cooled, directional solidification of cooling the casting mold from the lower cooling liquid to the upper cooling liquid is formed, and the metal crystallization direction of the casting is controlled in a certain direction; and the bulging defect, the structure non-uniform defect, the puncture defect and the like of a traditional cooling process are avoided, and the casting performance and quality are effectively improved.

Description

Technical Field

[0001] The utility model relates to the field of casting, in particular to an investment mold cooling device. Background Art

[0002] Investment casting is also called lost wax casting, which includes the processes of wax pressing, wax repairing, tree assembly, slurry dipping, wax melting, pouring molten metal and post-processing. For casting of large products (greater than 8kg), the shell mold strength in the middle of the large flat surface of the product is the smallest. After the molten steel is poured into the shell mold, the large flat surface in the middle is squeezed by the weight of the molten steel, which will cause the shell mold to deform. After deformation, the casting will bulge. Once the shell mold is squeezed and cracked, the casting will be punctured. In addition, the inner fillet dissipates heat slowly and cannot be supplemented with molten steel during solidification, which is prone to shrinkage and loosening on this fillet. It can be seen that when the investment mold cooling method is used, it is easy to cause bulging or puncture on the large flat surface in the middle of the casting. Utility Model Content

[0003] Based on this, it is necessary to provide a casting cooling device to address the problem that when the casting cooling method is prone to bulging or puncture on the large plane in the middle of the casting.

[0004] The utility model provides a mold cooling device, comprising a cooling trough body, a chill and a casting mold. The cooling trough body is provided with a coolant, the chill is placed in the cooling trough body, and one end of the chill is in contact with the coolant; the other end of the chill is in contact with the large plane of the casting mold.

[0005] In some of the embodiments, the cooling trough body is further equipped with a trough cover, and the trough cover is provided with an opening adapted to the cold iron.

[0006] In some of the embodiments, the mold member is located above the opening.

[0007] In some of the embodiments, the shape of the other end of the chill is adapted to the large plane of the casting.

[0008] In some embodiments, one end of the cold iron is fixedly connected to the bottom of the cooling trough.

[0009] In some embodiments, the cooling tank body is also provided with a liquid inlet and a liquid outlet for the cooling liquid.

[0010] In some embodiments, the bottom of the cooling trough body is a slope that slopes from the liquid inlet to the liquid outlet, and the inclination angle of the slope is greater than 0° and less than 5°.

[0011] In some embodiments, the cooling liquid is tap water.

[0012] In some of the embodiments, the casting mold comprises a casting mold shell and a die head, and a side of the casting mold shell which is away from the large plane is connected to the die head.

[0013] In some of the embodiments, a casting port of the die head is opposite to the large plane.

[0014] Compared with the prior art, the present invention has at least the following beneficial effects:

[0015] 1. By making one end of the cold iron directly contact with the coolant and the other end contact with the large flat surface of the casting, the large flat surface of the casting is cooled quickly, and directional solidification is formed from the coolant below to the casting above, so that the metal crystallization direction of the casting is controlled in a certain direction, avoiding bulging defects, uneven structure defects and puncture defects in traditional cooling processes, and effectively improving the performance and quality of castings.

[0016] 2. By setting the slot cover, it is possible to prevent the molten steel from dripping into the coolant during casting, thereby improving the casting safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the investment mold cooling device shown in an embodiment of the utility model;

[0018] Figure 2 A schematic diagram of an exploded perspective of a chill and a casting mold according to an embodiment of the present invention;

[0019] Figure 3 It is a structural schematic diagram of an investment mold cooling device with a slot cover according to an embodiment of the utility model;

[0020] Figure 4 The present invention is a schematic structural diagram of an investment mold cooling device with a liquid inlet and a liquid outlet according to an embodiment of the present invention. DETAILED DESCRIPTION

[0021] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0022] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may also be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. In contrast, when an element is referred to as being "directly on" another element, there is no intermediate element. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only."

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0024] See also Figure 1 and 2 An embodiment of the utility model shows a mold cooling device, including a cooling trough body 1, a chill 2 and a casting 3. The cooling trough body 1 is filled with coolant, the chill 2 is placed in the cooling trough body 1, and one end of the chill 2 is in contact with the coolant; the other end of the chill 2 is in contact with a large plane 31 of the casting 3.

[0025] In this embodiment, the casting mold 3 is an empty mold shell made by repeatedly dipping and sanding a wax mold, waiting for molten metal (such as molten steel) to be cast. Figure 2 As shown, the large flat surface 31 of the casting 3 is directly contacted with the chill 2, and the chill 2 is in contact with the coolant, forming directional cooling from the coolant to the chill 2, and then to the large flat surface 31 of the casting 3, and continuing to cool other parts of the casting 3, thereby controlling the crystallization direction of the metal and realizing whisker castings, which can avoid the accumulation defects, uneven structure, bulging and puncture, etc. existing in the traditional casting process, and effectively improve the quality and performance of the casting.

[0026] Optionally, the coolant may be tap water, which is cheaper than other coolants and can effectively reduce the cost of cooling materials.

[0027] In some embodiments, Figure 3As shown, the cooling trough body 1 is also equipped with a trough cover 4, and the trough cover 4 is provided with an opening adapted to the cold iron 2, and the casting part 3 is located above the opening. Since the molten metal may drip into the coolant during casting of the casting part, causing safety risks such as boiling of the coolant, the present embodiment also provides a trough cover 4 with the cooling trough body 1 to prevent the molten metal from directly dripping into the coolant. Optionally, the edge of the trough cover 4 is provided with a convex edge and an opening, and the edge height is lower than the middle height, so that after the molten metal drips on the trough cover 4, it automatically flows to the opening of the trough cover 4 for recovery.

[0028] In some embodiments, Figure 1 As shown, one end of the chill 2 is fixedly connected to the bottom of the cooling trough body 1; the other end of the chill 2 is shaped to match the large flat surface 31 of the casting 3. One end of the chill 2 is threadedly or snap-fitted to the bottom of the cooling trough body 1. For example, a screw is provided at the bottom of the cooling trough body 1, and one end of the chill 2 is provided with a matching screw hole, which is threadedly connected to the screw hole through the screw to ensure the stability of the chill and avoid shaking during the casting process and causing the molten metal to spill. Setting the shape of the other end of the chill 2 to match the large flat surface 31 of the casting 3 can make the chill 2 and the casting 3 fit perfectly, ensuring the stability of the casting 3. At the same time, the shape adaptation can make the contact surface between the chill 2 and the large flat surface 31 fit better, thereby improving the cooling effect.

[0029] In some embodiments, Figure 4 As shown, the cooling tank body 1 is also provided with a liquid inlet 11 and a liquid outlet 12 for the coolant. The bottom of the cooling tank body 1 is an inclined plane inclined from the liquid inlet 11 to the liquid outlet 12, and the inclination angle of the inclined plane is greater than 0° and less than 5°. By setting the liquid inlet 11 and the liquid outlet 12, circulating cooling can be formed to further improve the cooling effect; by setting a slightly inclined inclined plane, the circulation effect of the coolant can be better, ensuring that each portion of coolant will circulate through the liquid inlet 11 and the liquid outlet 12, and will not stay in the cooling tank body for a long time; at the same time, the small inclination angle can ensure that the placement of the cooling tank body is not affected.

[0030] In some embodiments, Figure 2 As shown, the casting mold 3 includes a casting mold shell 32 and a die head 33, and the side of the casting mold shell 32 that is away from the large plane is connected to the die head 33. The casting port of the die head 33 is away from the large plane. The casting mold shell 32 is connected to the die head 33 so that molten metal can be poured into the inner cavity of the casting mold shell through the casting port of the die head 33. By setting the casting port away from the large plane, the directional cooling requirement can be met.

[0031] By way of example and not limitation, Figures 1 to 4As shown, the chill 2 is installed at the bottom of the cooling tank body, the large flat surface of the casting mold 3 is buckled onto the chill 2, the tank cover 4 is covered, and the coolant is circulated through the liquid inlet 32 ​​and the liquid outlet 33. The molten steel is poured through the casting port of the die head 33, and the chill 2 first cools the molten steel on the large flat surface and gradually cools upwards, and the circulating coolant takes away the heat absorbed by the chill 2.

[0032] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0033] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A mold cooling device, characterized in that: It comprises a cooling trough body, a chill and a casting mold. The cooling trough body is provided with a cooling liquid. The chill is placed in the cooling trough body, and one end of the chill contacts the cooling liquid; the other end of the chill contacts the large plane of the casting mold.

2. The mold cooling device according to claim 1, characterized in that: The cooling trough body is also equipped with a trough cover, and the trough cover is provided with an opening adapted to the cold iron.

3. The mold cooling device according to claim 2, characterized in that: The casting mold is located above the opening.

4. The mold cooling device according to claim 1, characterized in that: The shape of the other end of the cold iron is adapted to the large plane of the casting mold.

5. The mold cooling device according to claim 1, characterized in that: One end of the cold iron is fixedly connected to the bottom of the cooling trough body.

6. The mold cooling device according to claim 1, characterized in that: The cooling tank body is also provided with a liquid inlet and a liquid outlet of the cooling liquid.

7. The mold cooling device according to claim 6, characterized in that: The bottom of the cooling tank body is an inclined surface inclined from the liquid inlet to the liquid outlet, and the inclination angle of the inclined surface is greater than 0° and less than 5°.

8. The mold cooling device according to claim 1, characterized in that: The coolant is tap water.

9. The mold cooling device according to claim 1, characterized in that: The casting mold comprises a casting mold shell and a die head, and a side of the casting mold shell which is away from the large plane is connected to the die head.

10. The investment mold cooling device according to claim 9, characterized in that: The casting port of the die head is away from the large plane.

Images