Chiller for casting cope flask

Abstract

The utility model discloses a chill for casting an upper sand box, which can be used in the upper sand box in the casting process and used for cooling a casting, the chill comprises a chill piece, the chill piece comprises a first part and second parts, the second parts are arranged at the bottom of the first part, and the second parts are arranged on two sides of the first part in a convex manner. An inclined part is arranged at the top of the second part; according to the utility model, through the matching of the second part and the inclined part, the sand hanging area of the chill piece can be increased, so that the chill piece is positioned in the sand box, the sand hanging amount can be increased, the sand hanging is firm, the chill piece positioned in the sand box is not easy to fall off even if the upper sand box needs to be overturned and transferred after molding, and the sand box is convenient to use in casting production.

Description

Technical Field

[0001] The utility model relates to the technical field of casting equipment, in particular to a chill for a casting upper sand box. Background Art

[0002] The main steps of sand box (sand mold) casting include painting (drawing), mold making, core making, molding (sand box molding), melting, pouring and cleaning, etc. Core making is the process of making a core sand into a sand core that conforms to the shape of a core box (mold / sand box). During casting, after some castings are formed, due to uneven thickness, the thick walls cool slowly and the thin walls cool quickly, and shrinkage porosity, a casting defect, is extremely likely to occur in the thick-walled parts. At present, in order to accelerate the local cooling rate of castings, the chill placed inside the sand box cavity, on the surface of the sand box cavity and inside the mold is called a chill. The chill is used in conjunction with the gating system and riser system to control the solidification sequence of the casting. It can reduce the size of the riser, improve the process yield, and can also improve the feeding channel, improve the internal quality grade of the casting, and provide high-quality castings.

[0003] In the prior art, a Chinese invention with the publication number CN201911173995.0 and the name of a casting process for accelerating solidification and cooling of thick and large investment castings using an internal chill discloses a technical solution for accelerating the cooling of castings with a chill: the effective placement of the chill during investment casting; it can not only reduce the hot spot in the thick and large parts, but also effectively avoid defects such as shrinkage cavity, porosity, and coarse grains in the internal structure, and effectively improve the product quality and process yield of thick and large investment castings. A Chinese utility model with the publication number CN211161825U and the name of a highly efficient chill for precision casting discloses a highly efficient chill for precision casting, including a chill and a steel plate. A placement groove is opened on the side wall of the chill, and an annular rib is provided on the side wall of the chill at the opening end of the placement groove. The chill and the annular rib are integrally formed. There are four steel plates, and the four steel plates enclose a placement container. The placement container is provided with a side opening and an upper opening. The placement container is fixed at the opening end of the placement groove, and the side opening is opposite to the opening end of the placement groove. The placement container and the placement groove form a placement cavity, and broken ice cubes are placed in the placement cavity. Although this chill has a good cooling effect, it does not have a good sand hanging structure, and the sand hanging is not firm. When the upper sand box needs to be turned over and transported after molding, the upper box surface is prone to cracking and the sand hanging is not firm, which will cause the chill to fall off, seriously affecting the use. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a chill for a casting upper sand box, aiming to solve the problems mentioned above.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] A chill for the upper sand box of casting, comprising a chill piece, the chill piece includes a first part and a second part, the second part is arranged at the bottom of the first part, and the second part protrudes outwardly on both sides of the first part, and an inclined part is provided at the top of the second part.

[0007] Preferably, the inclined part is integrally provided with the side surface of the first part.

[0008] Preferably, the first part is in the shape of a quadrangular frustum.

[0009] Preferably, the cross-section of the chill piece is in the shape of a T.

[0010] Preferably, the included angle between the inclined part and the horizontal plane is between 0° and 90°.

[0011] In summary, due to the adoption of the above technical solutions, the beneficial effects of the present utility model are as follows:

[0012] In the present utility model, through the cooperation of the second part and the inclined part, the sand hanging area of the chill piece can be increased, so that the amount of sand hanging can be increased when the chill piece is located in the sand box, and the sand hanging is firm. Even when the upper sand box needs to be turned over and transported after molding, the chill piece located in the sand box is not easy to fall off, which is convenient for casting production. Description of the Drawings

[0013] Figure 1 is a perspective view of the present utility model;

[0014] Figure 2 is a front view of the present utility model;

[0015] Figure 3 is a left view of the present utility model;

[0016] Figure 4 is a top view of the present utility model;

[0017] Figure 5 is a first use state diagram of the present utility model;

[0018] Figure 6 is a second use state diagram of the present utility model.

[0019] Markings in the figure: 1, chill piece; 101, first part; 102, second part; 103, inclined part. Detailed Embodiments

[0020] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0021] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "provided with", "installed", "connected", "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0022] Referring to Figures 1-4 , a chill for the upper sand box of casting can be used in the upper sand box during the casting process to cool the casting. The chill includes a chill piece 1, and the chill piece 1 includes a first part 101 and a second part 102. The first part 101 is in the shape of a frustum of a pyramid, and the second part 102 is provided at the bottom of the first part 101, and the second part 102 protrudes outward on both sides of the first part 101, constituting the protrusions on both sides of the first part 101. Therefore, the cross-section of the chill piece 1 is in a T shape.

[0023] An inclined portion 103 is provided at the top of the second part 102, and the angle between the inclined portion 103 and the horizontal plane is set within 0° - 90°, preferably 0° - 10°, and the inclined portion 103 is integrally provided with the side surface of the first part 101.

[0024] In this embodiment, referring to Figure 5 , when the chill piece 1 is installed in the upper sand box for use, the chill piece 1 is arranged parallel to the horizontal plane. At this time, the top surface of the first part 101 is placed in contact with the sand mold. When the sand box is being modeled, resin sand can be poured into the sand box. During the hardening process of the resin sand, through the cooperation of the second part 102 and the inclined portion 103, the sand hanging area of the chill piece 1 can be increased. Thus, when the chill piece 1 is located in the sand box, the sand hanging amount can be increased, and the sand hanging is firm. Even when the upper sand box needs to be turned over and transported after modeling, the chill piece 1 located in the sand box is not easily detached, improving the firmness of the chill piece 1, reducing the risk of detachment of the chill piece 1 located in the sand box, and further ensuring the cooling effect of the chill piece 1, improving the stability of the product quality, and facilitating the use in casting production; and the chill piece 1 can be suitable for a variety of product structures, with a wide range of applications.

[0025] In addition, referring to Figure 6 , there can be another installation method for installing the chill 1 in the upper sand box. Specifically, the chill 1 is arranged perpendicular to the horizontal plane. At this time, the whole chill 1 is vertically arranged in the sand mold, and the inclined portion 103 is in a state where the amplitude at the top is small and the amplitude at the bottom is high. When the sand box is being molded, resin sand can be poured into the sand box. During the hardening process of the resin sand, through the cooperation of the second part 102 and the inclined portion 103, the sand hanging area of the chill 1 can be increased. Thus, the amount of sand hanging on the chill 1 located in the sand box can be increased, and the sand hanging is firm. Even when the upper sand box needs to be turned over and transported after molding, the chill 1 located in the sand box is not easily detached, which is convenient for foundry production use.

Claims

1. A chill for a casting flask, characterized in that: The cold iron piece (1) comprises a first part (101) and a second part (102), wherein the second part (102) is arranged at the bottom of the first part (101), and the second part (102) is protrudingly arranged on both sides of the first part (101), and the top of the second part (102) is provided with an inclined part (103).

2. The chill for a casting flask according to claim 1, characterized in that: The inclined portion (103) is integrally arranged with the side surface of the first portion (101).

3. The chill for a casting flask according to claim 1 or 2, characterized in that: The first part (101) is in the shape of a quadrangular pyramid.

4. The chill for a casting flask according to claim 2, characterized in that: The cross section of the cold iron piece (1) is T-shaped.

5. The chill for a casting flask according to claim 3, characterized in that: The angle between the inclined portion (103) and the horizontal plane is between 0° and 90°.

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