Sand core mold for high-temperature-resistant and wear-resistant nodular cast iron

Abstract

The utility model relates to the technical field of supporting facilities for manufacturing high-temperature-resistant and wear-resistant nodular cast iron, and particularly discloses a sand core mold for high-temperature-resistant and wear-resistant nodular cast iron. The mold comprises a movable mold and a fixed mold, wherein a pipeline area, a cross gate, an inner gate, a longitudinal gate, a filter sheet groove, a straight gate insert, a feeding gate insert and a cooling exhaust groove are respectively arranged on the inner surfaces of the movable mold and the fixed mold. Heating rod holes are respectively formed in the side surfaces of the movable mold and the fixed mold. The utility model provides a die for manufacturing the high-temperature-resistant and wear-resistant nodular cast iron, the die can be used for directly producing the sand core, and a guarantee is provided for manufacturing the high-temperature-resistant and wear-resistant nodular cast iron.

Description

Technical Field

[0001] The utility model relates to the technical field of high-temperature-resistant and wear-resistant ductile iron production supporting facilities, in particular to a sand core mould for high-temperature-resistant and wear-resistant ductile iron. Background Art

[0002] Currently, the exhaust gas discharge valve operating levers used in automotive exhaust system boost regulators are mostly made of medium-silicon-molybdenum heat-resistant ductile iron (Si4Mo1). However, during normal use, the exhaust gas temperature from a vehicle often exceeds 600°C, and exhaust gas discharge valve operating levers made of Si4Mo1 often begin to deform slightly at 300°C. While this does not temporarily affect the normal function of the vehicle's exhaust, over long periods of high and low temperature transitions, the Si4Mo1 exhaust gas discharge valve operating lever often undergoes ultimate plastic deformation, which in turn affects the normal function of the vehicle's exhaust and, ultimately, the boost pressure regulation function of the vehicle's exhaust system. Analysis reveals that the existing technology suffers from the following technical issues: Exhaust gas discharge valve operating levers made of medium-silicon-molybdenum ductile iron begin to deform at 300°C, ultimately affecting the boost pressure regulation function of the vehicle's exhaust system.

[0003] To this end, the applicant has developed a high temperature wear resistant ductile iron, such as Figure 4 and Figure 5 As shown, this type of cast iron requires a special sand core during the casting process, and making the sand core requires a mold, which is not available in the prior art. Utility Model Content

[0004] In order to make up for the defects of the prior art, the utility model provides a high-precision sand core mold for high-temperature-resistant and wear-resistant ductile iron.

[0005] The utility model is achieved through the following technical solutions:

[0006] A sand core mold for high-temperature resistant and wear-resistant ductile iron, characterized in that it comprises a movable mold and a fixed mold that are combined together when in use, the inner surface of the movable mold is provided with a movable pipeline area, a movable horizontal runner, a movable ingate, a movable vertical runner, a movable filter plate groove, a movable straight runner insert, a movable feeding runner insert and a movable cooling exhaust groove, the inner surface of the fixed mold is provided with a sand shooting port, a fixed pipeline area, a fixed horizontal runner, a fixed ingate, a fixed vertical runner, a fixed filter plate groove, a fixed straight runner insert, a fixed feeding runner insert and a fixed cooling exhaust groove, the movable horizontal runner and the fixed horizontal runner are respectively provided with a plurality of movable shaping columns and fixed shaping columns, and when the movable mold and the fixed mold are combined together, the movable shaping columns and the fixed shaping columns, the movable straight runner insert and the fixed The sprue insert, the dynamic feeding sprue insert and the fixed feeding sprue insert, the dynamic cooling exhaust groove and the fixed cooling exhaust groove are respectively close to each other, the dynamic ingode is located at both ends of the dynamic pipeline area, the fixed ingode is located at both ends of the fixed pipeline area, the dynamic sprue insert is located in the middle position, there are two dynamic longitudinal runners and two dynamic filter grooves respectively, and each side of the dynamic sprue insert has a dynamic longitudinal runner and a dynamic filter groove; the fixed sprue insert is located in the middle position, there are two fixed longitudinal runners and two fixed filter grooves respectively, and each side of the fixed sprue insert has a fixed longitudinal runner and a fixed filter groove, and the fixed longitudinal runner is connected to the fixed sprue insert.

[0007] Heating rod holes are respectively provided on the sides of the movable mold and the fixed mold.

[0008] The beneficial effects of the utility model are:

[0009] The utility model provides a mold for the production of high-temperature-resistant and wear-resistant ductile iron. The mold can directly produce sand cores, thus providing a guarantee for the production of high-temperature-resistant and wear-resistant ductile iron. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The present invention will be further described below with reference to the accompanying drawings:

[0011] Figure 1 It is a structural diagram of the inner surface of the movable mold;

[0012] Figure 2 It is a structural diagram of the inner surface of the fixed mold;

[0013] Figure 3 Schematic diagram of the structure after mold closing;

[0014] Figure 4 This is a schematic diagram of the front structure of the sand core (corresponding to the inner surface of the movable mold);

[0015] Figure 5 This is a schematic diagram of the reverse structure of the sand core (corresponding to the inner surface of the fixed mold).

[0016] In the figure, 1 is a moving pipe area, 2 is a moving cross runner, 3 is a moving ingode, 4 is a moving vertical runner, 5 is a moving filter plate slot, 6 is a moving sprue insert, 7 is a moving feeding runner insert, 8 is a moving cooling exhaust groove, 9 is a moving shaping column, 10 is a sand shooting mouth, 11 is a fixed pipe area, 12 is a fixed cross runner, 13 is a fixed ingode, 14 is a fixed vertical runner, 15 is a fixed filter plate slot, 16 is a fixed sprue insert, 17 is a fixed feeding runner insert, 18 is a fixed cooling exhaust groove, 19 is a fixed shaping column, 21 is a heating rod hole, 22 is a connecting plate, 23 is a moving mold, and 24 is a fixed mold. DETAILED DESCRIPTION

[0017] The accompanying drawings illustrate specific embodiments of the present invention. To more clearly understand the above-mentioned objectives, features, and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, unless there is a conflict, the embodiments of the present application and the features therein may be combined with each other.

[0018] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0019] like Figures 1 to 3 As shown, this type of sand core mold for high-temperature and wear-resistant ductile iron includes a movable mold 23 and a fixed mold 24. When making the sand core, the movable mold 23 and the fixed mold 24 are combined together by an oil cylinder. The side that cannot be seen after the movable mold 23 and the fixed mold 24 are combined is called the inner side, and the visible side is called the outer side. The sides of the movable mold 23 and the fixed mold 24 are both provided with heating rod holes 21, and the heating rod holes 21 are blind holes.

[0020] The inner surface of the movable mold 23 is provided with a movable pipeline area 1, a movable horizontal runner 2, a dynamic gate 3, a dynamic vertical runner 4, a dynamic filter groove 5, a dynamic straight runner insert 6, a dynamic shrinkage runner insert 7 and a dynamic cooling exhaust groove 8. The dynamic straight runner insert 6 is located in the middle position, there are two dynamic vertical runners 4 and two dynamic filter grooves 5, and there is a dynamic vertical runner 4 and a dynamic filter groove 5 on both sides of the dynamic straight runner insert 6. Four dynamic shaping columns 9 are provided on the dynamic horizontal runner 2, or there can be more than one, which moves according to the shape of the high-temperature resistant and wear-resistant ductile iron.

[0021] The inner surface of the fixed mold 24 is provided with a sand shooting port 10, a fixed pipeline area 11, a fixed horizontal runner 12, a fixed inner gate 13, a fixed vertical runner 14, a fixed filter plate groove 15, a fixed straight runner insert 16, a fixed shrinkage runner insert 17 and a fixed cooling exhaust groove 18. The fixed straight runner insert 16 is located in the middle position, and there are two fixed vertical runners 14 and two fixed filter plate grooves 15. There is a fixed vertical runner 14 and a fixed filter plate groove 15 on both sides of the fixed straight runner insert 16, and the fixed vertical runner 14 is connected to the fixed straight runner insert 16. Four fixed shaping columns 19 are provided on the fixed horizontal runner 12, or there can be more than one, which moves according to the shape of the high-temperature and wear-resistant ductile iron, but must be the same number as the dynamic shaping columns 9.

[0022] The dynamic gates 3 are located at both ends of the dynamic channel area 1 , and the fixed gates 13 are located at both ends of the fixed channel area 11 .

[0023] The dynamic channel area 1, the dynamic cross runner 2, the dynamic ingate 3, the dynamic vertical runner 4, the dynamic filter slot 5, the dynamic sprue insert 6, the dynamic feeding runner insert 7, the dynamic cooling exhaust groove 8, the fixed channel area 11, the fixed cross runner 12, the fixed ingate 13, the fixed vertical runner 14, the fixed filter slot 15, the fixed straight runner insert 16, the fixed feeding runner insert 17 and the fixed cooling exhaust groove 18 are all raised blocks. When the movable mold 23 and the fixed mold 24 are closed, When they are put together, the dynamic shaping column 9 and the fixed shaping column 19, the dynamic sprue insert 6 and the fixed sprue insert 16, the dynamic feeding runner insert 7 and the fixed feeding runner insert 17, the dynamic cooling exhaust groove 8 and the fixed cooling exhaust groove 18 are respectively close to each other, and the remaining parts form the cavity of the sand core, which is the product area. That is to say, when the sand material is blown into the cavity from the sand shooting port 10 under the action of compressed air, it becomes a sand core after heating and other process treatments.

[0024] The connecting plate 22 is designed for the convenience of assembling and disassembling the mold.

[0025] In this utility model, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The term "plurality" refers to two or more, unless otherwise expressly limited. Terms such as "installed," "connected," "connected," and "fixed" should be interpreted broadly. For example, "connected" can refer to fixed, removable, or integral connections. "Connected" can refer to direct or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0026] In the description of the present invention, it should be understood that the terms "up", "down", "left", "right", "front", "back", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limiting the present invention.

[0027] Throughout this specification, terms such as "one embodiment," "some embodiments," and "specific embodiments" mean that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. Throughout this specification, schematic representations of these terms often refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0028] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

[0029] Except for the technical features described in the specification, the remaining technical features are known to those skilled in the art.

Claims

1. A sand core mold for high temperature and wear resistant ductile iron, characterized by: The invention comprises a movable mold (23) and a fixed mold (24) which are combined together when in use, wherein the inner surface of the movable mold (23) is provided with a movable pipeline area (1), a movable horizontal runner (2), a movable ingate (3), a movable longitudinal runner (4), a movable filter plate groove (5), a movable straight runner insert (6), a movable shrinkage runner insert (7) and a movable cooling exhaust groove (8), and the inner surface of the fixed mold (24) is provided with a sand shooting port (10), a fixed pipeline area (11), a fixed horizontal runner (12), a fixed The gate (13), the fixed longitudinal runner (14), the fixed filter plate groove (15), the fixed sprue insert (16), the fixed shrinkage runner insert (17) and the fixed cooling exhaust groove (18), the movable horizontal runner (2) and the fixed horizontal runner (12) are respectively provided with a plurality of movable shaping columns (9) and fixed shaping columns (19), when the movable mold (23) and the fixed mold (24) are combined together, the movable shaping columns (9) and the fixed shaping columns (19), the movable sprue insert (6) The fixed straight runner insert (16), the dynamic shrinkage feed runner insert (7) and the fixed shrinkage feed runner insert (17), the dynamic cooling exhaust groove (8) and the fixed cooling exhaust groove (18) are respectively close together, the dynamic ingate (3) is located at both ends of the dynamic pipeline area (1), the fixed ingate (13) is located at both ends of the fixed pipeline area (11), the dynamic straight runner insert (6) is located in the middle position, the dynamic longitudinal runner (4) and the dynamic filter plate groove (5) are respectively two, and each side of the dynamic straight runner insert (6) has a dynamic longitudinal runner (4) and a dynamic filter plate groove (5); the fixed straight runner insert (16) is located in the middle position, the fixed longitudinal runner (14) and the fixed filter plate groove (15) are respectively two, and each side of the fixed straight runner insert (16) has a fixed longitudinal runner (14) and a fixed filter plate groove (15), and the fixed longitudinal runner (14) is connected to the fixed straight runner insert (16).

2. The sand core mold for high temperature and wear resistant ductile iron according to claim 1, characterized in that: The sides of the movable mold (23) and the fixed mold (24) are respectively provided with heating rod holes (21).

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