CN219561348U - Conformal chill structure for sand casting - Google Patents

Abstract

A conformal chill structure for sand casting, the structure comprising a conformal chill body having a first surface, a second surface, and a third surface for contacting a mold, and a fourth surface, a fifth surface, and a sixth surface for contacting sand; the first surface and the sixth surface are arranged oppositely and are respectively an inner wall and an outer side wall of the cold iron body, the second surface is a transition surface which is sequentially connected with the first surface along the height direction, the third surface is a lower end surface which extends along the height direction, the fourth surface is two end surfaces which extend along the length direction of the cold iron body, and the fifth surface is an upper end surface which is arranged oppositely to the third surface; the sixth surface is integrally provided with a reinforcing rib protruding outwards; the utility model has the advantages of effectively realizing the fixation with the molding sand, being not easy to break and falling off during the process of stripping, lifting or turning.

Description

Conformal chill structure for sand casting

Technical Field

The utility model relates to the technical field of casting, in particular to a conformal chill structure for sand casting.

Background

The casting can cause the uneven wall thickness of each part due to the structural requirement, the part with thicker wall thickness is cooled slowly, and the part with smaller wall thickness is cooled quickly, so that the problem of uneven cooling speed can occur at different parts of the same casting, and casting defects such as shrinkage cavity, shrinkage porosity and the like are easily brought. The common function of the chiller is to correspondingly place the chiller at the part with larger wall thickness, thereby accelerating the cooling speed of the part and solving the problems of shrinkage cavity and shrinkage porosity of the part with larger wall thickness.

The technical requirements of the planet carrier castings for wind power are high, the structure is complex, the curved surfaces are more, and a plurality of conformal chill blocks are often required to be placed on the curved surfaces so as to obtain castings with higher quality. As shown in fig. 1-3, a three-open-box shaped wind power planet carrier casting a is provided, in which a conformal chill 1 'needs to be arranged at a position shown in the figure in the shaping process, but after a mold 2' forming a casting cavity (the mold is a mold in a shape similar to a casting shape and is used for forming the casting cavity in molding sand in sand casting process) is removed, the chill is difficult to fix, the problem that the chill is easy to fall off during stripping, lifting or overturning is solved, the fallen chill needs to be repaired and fixed at an original position again, the casting manufacturing efficiency is greatly reduced, the requirement of a process is difficult to be met, the casting quality of a blank of the planet carrier is reduced, and the subsequent procedures are influenced seriously; specifically, as shown in fig. 4 to 6, in the upper box mold, the first surface 101', the second surface 102', and the third surface 103 'of the conformal chill are surfaces directly forming the casting surface, and the contact surfaces of the fourth surface (two surfaces, i.e., two end surfaces in the length direction) 104', the fifth surface (upper end surface extending in the height direction) 105', and the sixth surface (outer surface disposed opposite to the first surface) 106' with the molding sand 3', are also surfaces of the molding sand 3' holding the conformal chill. In the process of stripping (after molding, the mold needs to be removed from the sand mold to form a casting cavity), the first surface, the second surface and the third surface of the conformal chill leave the surface of the mold and are in a suspended state, so that the conformal chill is easy to fall off during stripping, lifting or overturning.

As shown in fig. 4 to 7, in order to prevent the shape-following chill from falling off, it is conventional to cast the reinforcing steel bar 4 'or weld the reinforcing steel bar 4' on the sixth surface 106 '(drawing) or the fifth surface 105' when the shape-following chill is manufactured, so that the fixing of the shape-following chill in the mold can be enhanced by the fixing of the reinforcing steel bar in the molding sand. However, the steel bars cast in the shape-following chill or welded steel bars are easy to break in use, so that the service life of the steel bars is short, the production cost is high, and the situation of unstable fixation can also occur due to the fact that the steel bars are of cylindrical structures and the acting force between the steel bars and the molding sand is small; in addition, in order to meet the appearance of the casting surface, the follow-up chill surface requirement for directly forming the casting surface is high, the follow-up chill manufactured by the traditional damp molding cannot be achieved, the follow-up chill manufactured by the traditional damp molding is generally required to be manufactured by self-hardening sand, the steel bar is difficult to cast in when the follow-up chill is manufactured by the self-hardening sand, the operation is troublesome, the steel bar is required to be buried in a die of the follow-up chill in advance, and in addition, the casting of high-temperature molten iron can cause certain impact and high-temperature influence on the steel bar in the casting process of the chill.

Disclosure of Invention

The utility model aims at the defects of the prior art, and provides the conformal chill structure for sand casting, which can effectively realize the fixation with molding sand, is not easy to break and is not easy to fall off during the process of stripping, lifting or turning.

In order to solve the technical problems, the utility model adopts the following technical scheme: a conformal chill structure for sand casting, the structure comprising a conformal chill body having a first surface, a second surface, and a third surface for contacting a mold, and a fourth surface, a fifth surface, and a sixth surface for contacting sand; the first surface and the sixth surface are arranged oppositely and are respectively an inner wall and an outer side wall of the cold iron body, the second surface is a transition surface which is sequentially connected with the first surface along the height direction, the third surface is a lower end surface which extends along the height direction, the fourth surface is two end surfaces which extend along the length direction of the cold iron body, and the fifth surface is an upper end surface which is arranged oppositely to the third surface; the sixth surface is integrally provided with a reinforcing rib protruding outwards.

By adopting the structure, the reinforcing ribs are arranged on the sixth surface of the conformal chill, namely the outer surface with the largest contact area with molding sand, and can be embedded in the molding sand in the sand casting process, and the reinforcing ribs and the chill body are of an integrated structure, so that the strength is strong and firmer, the contact area of the conformal chill and the molding sand can be increased in the casting process, the bonding firmness between the chill and the molding is improved, the reinforcing ribs are not easy to break and can be repeatedly used for many times, and the conformal chill is not easy to fall off even in the process of stripping, lifting or overturning.

Further, the reinforcing ribs extend from the fifth surface towards the third surface; the reinforcing rib extends along the height direction of the conformal cold iron, so that the structure can save materials and can effectively improve the firmness of connection between the conformal cold iron and molding sand.

Furthermore, two reinforcing ribs are arranged in parallel and are respectively close to two end faces of the conformal chill body in the length direction; by adopting the structure, the contact area of the conformal chill and the molding sand can be further increased, and the connection firmness of the chill and the molding sand is improved.

Furthermore, the cross section of the reinforcing rib is in a quadrilateral structure, the surface of one side is connected with the conformal cold iron body, and the surfaces of the other three sides are contacted with molding sand; by adopting the structure, the contact area with the molding sand can be further increased, and the connection firmness of the chill and the molding sand is improved.

Further, the transverse casting surface of the reinforcing rib is quadrilateral with wide outside and narrow inside, and the length of the edge connected with the conformal cold iron body is smaller than that of the edge connected with molding sand, which is arranged opposite to the edge; the reinforcing rib with the structure is narrow in the inside and wide in the outside, so that after the reinforcing rib is buried with molding sand, the connection firmness between the reinforcing rib and the molding sand can be further enhanced, and the falling of the chill is less likely to occur.

Furthermore, the left side and the right side of the quadrangle with wide outside and narrow inside are equal in length and symmetrically arranged; the structure can further enhance the connection firmness between the chill and the molding sand, and the chill is not easy to fall off.

Further, the extension width of the reinforcing rib along the thickness direction of the conformal cold iron is smaller than that of the conformal cold iron; by adopting the structure, the material of the chill can be saved, and meanwhile, the connection firmness between the chill and the molding sand can be improved.

Further, the length of the reinforcing rib extending along the height direction of the conformal cold iron is smaller than the height of the conformal cold iron; by adopting the structure, the material of the chill can be saved, and meanwhile, the connection firmness between the chill and the molding sand can be improved.

Further, the upper end face of the reinforcing rib is flush with the fifth surface; after the conformal chill is placed in the molding sand, the structure can ensure the flatness of the whole plane of the third surface in the casting structure, so that the third surface is more closely attached to the surface of the mold, and the surface of the casting is also more smooth.

Further, the sixth surface or the fifth surface is provided with a casting mark; the mark can comprise the name of the casting product, the figure number and the number of the conformal cooling iron, so that the conformal cooling iron is convenient to manage and assemble, and the management cost is saved.

Drawings

FIG. 1 is a schematic view of the structure of the casting of the present utility model.

FIG. 2 is a schematic diagram of a prior art casting mold in combination with a conformal chill.

FIG. 3 is a schematic structural view of a front view of a prior art casting mold in combination with a conformal chill.

Fig. 4 is a schematic diagram of a first mode of prior art conformal chill and rebar bonding.

Fig. 5 is a schematic diagram of a second mode of prior art conformal chill and rebar bonding.

Fig. 6 is a schematic diagram of a first partial view of a prior art conformal chill combined with sand.

Fig. 7 is a schematic diagram of a second partial view of a prior art conformal chill combined with sand.

As shown in the accompanying drawings: a. casting, 1'. Conformal chill, 101'. First surface, 102'. Second surface, 103'. Third surface, 104'. Fourth surface, 105'. Fifth surface, 106'. Sixth surface, 2'. Casting mold, 3'. Sand, 4'. Rebar.

Fig. 8 is a schematic structural view of a first view of a conformal chill according to embodiment 1 of the present utility model.

Fig. 9 is a schematic structural view of a second view of the conformal chill of embodiment 1 of the present utility model.

Fig. 10 is a schematic structural diagram of a top view of a conformal cold iron according to embodiment 1 of the present utility model.

Fig. 11 is a schematic structural view of a first view of a conformal chill according to embodiment 2 of the present utility model.

Fig. 12 is a schematic structural view of a second view of the conformal chill of embodiment 2 of the present utility model.

Fig. 13 is a schematic diagram showing the structure of a top view of a conformal cold iron according to embodiment 2 of the present utility model.

FIG. 14 is a schematic view showing a partial view of the combination of the conformal chill and sand of the present utility model.

FIG. 15 is a schematic diagram of a side view of a conformal chill of the present utility model.

FIG. 16 is a schematic diagram of the front view of the casting mold of the present utility model in combination with a conformal chill.

As shown in the accompanying drawings: 1. the following-type chill body comprises a following-type chill body, wherein the following-type chill body comprises a first surface, a second surface, a third surface, a fourth surface, a fifth surface, a sixth surface, a casting mold, 3 molding sand, 4 reinforcing ribs and 5 casting marks.

Detailed Description

The technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the embodiments and the accompanying drawings, and it is apparent that the described embodiments are only preferred embodiments, not all embodiments. All other embodiments, based on the embodiments of the utility model, which a person of ordinary skill in the art would obtain without inventive faculty, are within the scope of the utility model;

furthermore, it is to be noted that: when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

As shown in fig. 8 to 16, the conformal chill structure for sand casting of the present utility model comprises a conformal chill body 1, wherein the conformal chill body 1 has a first surface 101, a second surface 102, and a third surface 103 for contacting a mold 2, and a fourth surface 104, a fifth surface 105, and a sixth surface 106 for contacting molding sand 3; the first surface 101 and the sixth surface 106 are opposite to each other and are respectively an inner wall and an outer side wall of the chiller body 1, the second surface 102 is a transition surface sequentially connected with the first surface 101 along the height direction, the third surface 103 is a lower end surface extending along the height direction (the second surface is positioned between the first surface and the third surface and is used for transition connection between the first surface and the third surface), the fourth surface 104 is two end surfaces extending along the length direction of the chiller body 1 (one is respectively arranged at two ends of the length direction of the fourth surface), and the fifth surface 105 is an upper end surface opposite to the third surface 103; the sixth surface 106 is integrally provided with an outwardly protruding reinforcing rib 4.

By adopting the structure, the reinforcing ribs are arranged on the sixth surface of the conformal chill, namely the outer surface with the largest contact area with molding sand, and can be embedded in the molding sand in the sand casting process, and the reinforcing ribs and the chill body are of an integrated structure, so that the strength is strong and firmer, the contact area of the conformal chill and the molding sand can be increased in the casting process, the bonding firmness between the chill and the molding is improved, the reinforcing ribs are not easy to break and can be repeatedly used for many times, and the conformal chill is not easy to fall off even in the process of stripping, lifting or overturning.

As shown in fig. 8-13, the reinforcing rib 4 according to the present utility model extends from the fifth surface 105 in the direction of the third surface 103; the reinforcing rib extends along the height direction of the conformal cold iron, so that the structure can save materials and can effectively improve the firmness of connection between the conformal cold iron and molding sand.

As shown in fig. 8-13, two reinforcing ribs 4 are arranged, and the two reinforcing ribs 4 are arranged in parallel (the height direction of the extending conformal cold iron extends in parallel) and are respectively close to two end faces of the length direction of the conformal cold iron body; by adopting the structure, the contact area of the conformal chill and the molding sand can be further increased, and the connection firmness of the chill and the molding sand is improved.

As example 1, as shown in fig. 8-10, the cross section of the reinforcing rib 4 of the utility model is in a quadrilateral structure, the surface of one side is connected with the conformal cold iron body, and the surfaces of the other three sides are contacted with molding sand; the structure is adopted, so that the contact area with the molding sand can be further increased, and the connection firmness of the chill and the molding sand is improved; more specifically, as shown in fig. 10 and 15, the length a=15 mm to 30mm, the height b=10 mm to 20mm, and H (extension height) =0.3H to 0.7H (height of the chiller body) of the outer edge of the reinforcing rib.

As example 2, as shown in fig. 11-13, the transverse pouring surface of the reinforcing rib 4 is a quadrangle with a wide outside (long outside length far away from the chill) and a narrow inside (short inside length connected with the chill body and the side is matched with the radian of the chill body), and the length of the side connected with the conformal chill body is smaller than that of the side connected with the molding sand 3 arranged opposite to the side; the reinforcing rib with the structure is narrow in the inside and wide in the outside, so that after the reinforcing rib is buried with molding sand, the connection firmness between the reinforcing rib and the molding sand can be further enhanced, and the falling of the chill is less likely to occur.

As example 2, as shown in fig. 11-13, the sides of the quadrangle with wide outside and narrow inside are equal in length and symmetrically arranged (i.e. similar to an isosceles trapezoid structure, wherein the bottom side is matched with the radian of the cold iron body); the structure can further enhance the connection firmness between the chill and the molding sand, and the chill is less likely to fall off; more specifically, as shown in fig. 13 and 15, the length a1=15 to 30mm of the outer edge of the reinforcing rib, A2 (the horizontal length of the inner edge) =10 to 25mm, the height b=10 to 20mm, and H (the extension height) =0.3 to 0.7H (the height of the chiller body).

As shown in fig. 8-13, the width of the reinforcing rib 4 extending along the thickness direction of the shape-following chill body 1 is smaller than the extending width of the shape-following chill (i.e. the thickness of the reinforcing rib is smaller than the thickness of the shape-following chill body); by adopting the structure, the material of the chill can be saved, and meanwhile, the connection firmness between the chill and the molding sand can be improved.

As shown in fig. 8 and 11, the length of the reinforcing rib 3 extending along the height direction of the conformal cold iron body 1 is smaller than the height of the conformal cold iron (i.e. the height of the reinforcing rib is not equal to the height of the conformal cold iron in length); by adopting the structure, the material of the chill can be saved, and meanwhile, the connection firmness between the chill and the molding sand can be improved.

As shown in fig. 8-16, the upper end surface of the reinforcing rib 4 and the fifth surface 105 are flush with each other; by adopting the structure, the initial end face of the reinforcing rib is flush with the fifth surface, so that after the conformal chill is placed in the molding sand, the third surface which is opposite to the fifth surface can be ensured to be entirely in the flat plane in the casting structure, so that the third surface is clung to the surface of the mold, and the surface of the casting is also cast more smoothly.

As shown in fig. 8-13, the fifth surface 105 or the sixth surface 106 according to the present utility model is provided with a casting logo 5; the mark can comprise the name of the casting product, the figure number and the number of the conformal cooling iron, so that the conformal cooling iron is convenient to manage and assemble, and the management cost is saved.

Claims (10)

1. The utility model provides a sand casting is with following shape chill structure which characterized in that: the structure comprises a conformal chill body, wherein the conformal chill body is provided with a first surface, a second surface and a third surface which are used for contacting with a mould, and a fourth surface, a fifth surface and a sixth surface which are used for contacting with molding sand; the first surface and the sixth surface are arranged oppositely and are respectively an inner wall and an outer side wall of the cold iron body, the second surface is a transition surface which is sequentially connected with the first surface along the height direction, the third surface is a lower end surface which extends along the height direction, the fourth surface is two end surfaces which extend along the length direction of the cold iron body, and the fifth surface is an upper end surface which is arranged oppositely to the third surface; the sixth surface is integrally provided with a reinforcing rib protruding outwards.

2. The conformal chill structure for sand casting of claim 1, wherein: the reinforcing ribs extend from the fifth surface towards the third surface.

3. The conformal chill structure for sand casting of claim 2, wherein: the two reinforcing ribs are arranged in parallel and are respectively close to the two end faces of the shape-following chill body in the length direction.

4. The conformal chill structure for sand casting of claim 2, wherein: the cross section of the reinforcing rib is in a quadrilateral structure, the surface of one side is connected with the conformal cold iron body, and the surfaces of the other three sides are contacted with molding sand.

5. The conformal chill structure for sand casting of claim 4, wherein: the transverse casting surface of the reinforcing rib is quadrilateral with wide outside and narrow inside, and the length of the edge connected with the conformal chill body is smaller than that of the edge connected with molding sand, which is arranged opposite to the edge.

6. The conformal chill structure for sand casting of claim 5, wherein: the left side and the right side of the quadrangle with wide outside and narrow inside are equal in length and symmetrically arranged.

7. The conformal chill structure for sand casting of claim 1, wherein: the extending width of the reinforcing rib along the thickness direction of the conformal cooling iron is smaller than that of the conformal cooling iron.

8. The conformal chill structure for sand casting of claim 1, wherein: the length of the reinforcing rib extending along the height direction of the conformal cold iron is smaller than the height of the conformal cold iron.

9. The conformal chill structure for sand casting of claim 1, wherein: the upper end face of the reinforcing rib is flush with the fifth surface.

10. The conformal chill structure for sand casting of claim 1, wherein: and the fifth surface or the sixth surface is provided with a casting mark.