A precision casting water removal device
By using an adjustable copper cylinder and copper plate support structure in the precision casting dewatering device, combined with a heat insulation cotton sleeve and a liftable cover, the adaptability problem of shell heating dewatering was solved, achieving efficient dewatering and heat retention, and improving the quality of castings.
Patent Information
- Application Number
- CN202522086948.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-28
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-09-28
AI Technical Summary
Existing technologies are insufficient for efficiently heating and dewatering shells of different sizes and shapes, resulting in defects such as porosity and looseness in the castings, as well as reduced shell strength.
A precision casting dewatering device is designed. By setting multiple support grooves on the base surface, embedding electric heating plates, and using an adjustable copper cylinder and copper plate support structure, combined with heat insulation cotton sleeves and liftable covers, the device can achieve comprehensive heating and heat retention of the mold shell, thereby evaporating and removing moisture.
It achieves efficient water removal for shells of different sizes and shapes, avoids heat loss, ensures casting quality and surface accuracy, and reduces casting defects.
Smart Images
Figure CN224681183U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of dewatering technology for casting mold shells, specifically a precision casting dewatering device. Background Technology
[0002] Precision casting, also known as investment casting or lost-wax casting, is an advanced near-net-shape manufacturing process. Its core process involves: first, creating a fusible wax model; then, repeatedly coating it with refractory paint to form a shell; finally, dewaxing the model by heating to obtain a hollow shell; and then pouring in molten metal. After cooling and solidification, a high-precision casting is obtained. This process has significant advantages, achieving dimensional accuracy of CT4-6 and surface roughness as low as Ra3.2μm. It can directly cast complex thin-walled structures and micropores, requiring little or no machining. It is also widely applicable to materials, including carbon steel, stainless steel, aluminum alloys, and high-temperature alloys. It is widely used in aerospace, automotive, and medical device industries, and is particularly suitable for the production of small-batch, high-value-added, and structurally complex precision parts. It is one of the key technologies for achieving efficient and low-cost precision forming in modern manufacturing.
[0003] Due to the hygroscopic nature of the shell material and residual moisture from the process, residual moisture remains in the mold shell. This moisture needs to be removed to prevent water vaporization during pouring, which could lead to defects such as porosity and looseness in the casting. Simultaneously, it is crucial to avoid a sudden drop in shell strength that could cause cracking, ensuring complete metal filling and improving the internal quality and surface precision of the casting. Existing technologies remove moisture through heating, but different mold shell models have varying sizes and shapes, making targeted and efficient heating for moisture removal inconvenient. Therefore, we propose a precision casting moisture removal device. Utility Model Content
[0004] The purpose of this invention is to provide a precision casting dewatering device. By setting multiple support grooves on the surface of the base, and embedding a fixed heating plate in the base below, a copper cylinder that matches the shape and size of the mold shell to be dewatered can be selected. The copper cylinder is supported by a copper plate on the surface of the heating plate in the support groove. Heat is transferred to the copper plate and the copper cylinder, which can fully heat the mold shell from the bottom and sides, causing it to evaporate and remove moisture. This device is convenient for dewatering mold shells of different sizes and shapes, and solves the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a precision casting dewatering device, comprising a base and copper cylinders. The surface of the base is provided with multiple support grooves of the same size at equal intervals. An electric heating plate is embedded and fixed inside the base at each support groove, and the heating surface of the electric heating plate is located in the support groove on its upper surface. Multiple copper cylinders are provided, and the copper cylinders include various sizes and shapes. A copper plate is fixed to the bottom of the copper cylinder and is connected to the copper cylinder as a whole. All copper plates are of the same size, and the copper plates are placed in the support grooves and supported on the surface of the electric heating plate.
[0006] By adopting the above technical solution, copper cylinders of different sizes and shapes can be selected to support the heating plate at the support groove through copper plates, so that heat can be transferred to the bottom copper plate and the outer copper cylinder, thereby easily and fully heating the shell from the outer ring and bottom, so that the shell can be heated and the moisture can be evaporated.
[0007] Optionally, the outer ring of the copper cylinder is fitted with a heat-insulating cotton sleeve, and the inner side of the heat-insulating cotton sleeve is pressed against the outer surface of the copper cylinder.
[0008] By adopting the above technical solution, heat loss through the copper cylinder is reduced during use.
[0009] Optionally, a liftable cover is provided above the base, which can be lowered to cover the base.
[0010] By adopting the above technical solution, the cover is lowered during water removal and, in conjunction with the heat insulation cotton cover, further heat loss is reduced.
[0011] Optionally, the base is supported by vertical support rods at its four corners, with an upper plate parallel to the base. An electric actuator is vertically installed in the middle of the upper plate surface, and a cover is fixed to the extended end of the electric actuator.
[0012] By adopting the above technical solution, the lifting and lowering of the cover is controlled by an electric actuator.
[0013] Optionally, a heat-insulating cotton liner is attached and fixed to the inner surface of the cover, and the heat-insulating cotton liner is evenly distributed on the inner surface of the cover.
[0014] By adopting the above technical solution, the presence of the heat insulation cotton lining further improves the heat insulation effect of the cover.
[0015] Optionally, the upper surface of the cover is provided with a plurality of through holes, which simultaneously penetrate the heat insulation cotton lining and communicate with the inside of the cover.
[0016] By adopting the above technical solution, after the cover is lowered, the through hole is connected to its interior, which facilitates the discharge of evaporated water vapor from the through hole.
[0017] Optionally, support blocks are fixed at all four corners of the base, and the support blocks at the four corners are of the same size.
[0018] By adopting the above technical solution, the base is supported and raised in height by the support blocks.
[0019] Compared with the prior art, the beneficial effects of the technical solution of this application are as follows:
[0020] 1. The technical solution of this application sets multiple support grooves on the surface of the base, and embeds a fixed electric heating plate in the base below it. According to the shape and size of the shell to be dewatered, a copper cylinder that matches it can be selected and supported by a copper plate on the surface of the electric heating plate in the support groove. Heat is transferred to the copper plate and the copper cylinder, which can fully heat the shell from the bottom and the side, so that the shell is heated and evaporated to remove moisture, which is convenient for dewatering shells of different sizes and shapes.
[0021] 2. The technical solution of this application, by placing a heat-insulating cotton sleeve around the outer ring of the copper cylinder and also providing a liftable cover on top, can reduce heat loss when heating and dewatering by lowering the cover in conjunction with the heat-insulating cotton sleeve. Attached Figure Description
[0022] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:
[0023] Figure 1 This is a schematic diagram of the overall structure of the precision casting dewatering device of this utility model;
[0024] Figure 2 This is a schematic diagram of the support groove base structure of the precision casting dewatering device of this utility model;
[0025] Figure 3 This is a schematic diagram of the copper cylinder and copper plate structure of the precision casting dewatering device of this utility model;
[0026] Figure 4 This is a schematic diagram of the inner cross-sectional structure of the cover of the precision casting dewatering device of this utility model.
[0027] In the diagram: 1. Base; 11. Support groove; 12. Heating plate; 13. Support block; 2. Copper plate; 21. Copper cylinder; 211. Insulation cotton sleeve; 3. Top plate; 31. Support rod; 32. Electric push rod; 4. Cover; 41. Through hole; 42. Insulation cotton lining. Detailed Implementation
[0028] Please see Figure 1-4 This utility model provides a technical solution: a precision casting dewatering device, including a base 1 and a copper cylinder 21. Support blocks 13 are fixed at the four corners of the bottom of the base 1. The support blocks 13 at the four corners are the same size. The support blocks 13 support the height of the base 1. In order to make the support more stable, more support blocks 13 can be set and evenly placed under the base 1.
[0029] Multiple support grooves 11 are equidistantly provided on the surface of the base 1. All support grooves 11 are the same size, and an electric heating plate 12 is embedded and fixed inside the base 1 at each support groove 11, so that the heating surface of the electric heating plate 12 is located in the support groove 11 on its upper surface.
[0030] Multiple copper cylinders 21 are provided, and the copper cylinders 21 include various sizes and shapes, so that they can be matched with more precision casting shells of different sizes and shapes. When dewatering shells of different sizes or shapes are performed, the matching copper cylinder 21 can be selected. A copper plate 2 is fixed at the bottom of the copper cylinder 21 and is connected to the copper cylinder 21 as a whole. In order to achieve the purpose of adaptation, all copper plates 2 are the same size. The copper plate 2 at the bottom of the selected copper cylinder 21 is placed in the support groove 11 and supported on the surface of the heating plate 12, so that the copper cylinder 21 is placed above the support groove 11.
[0031] In practical use, the precision casting mold shell to be dewatered is placed on the surface of the copper plate 2 inside the copper cylinder 21, with the pouring port facing upwards. The electric heating plate 12 is activated to heat the copper plate 2, and the heat is transferred to the copper cylinder 21, which fully heats the mold shell from the outer ring and bottom, causing the water inside to evaporate and be discharged outwards with the upward flow of hot air, thus achieving the purpose of dewatering.
[0032] In order to reduce heat loss during the dewatering process, the outer ring of the copper cylinder 21 is fitted with a heat insulation cotton sleeve 211. The inner side of the heat insulation cotton sleeve 211 is pressed against the outer surface of the copper cylinder 21, which can reduce the heat loss from the outer surface of the copper cylinder 21 to the outside.
[0033] Furthermore, an upper plate 3, parallel to the base 1, is supported above the base 1 by vertical support rods 31 at its four corners. An electric push rod 32 is vertically installed in the middle of the surface of the upper plate 3. The protruding end of the electric push rod 32 extends through to the bottom of the upper plate 3, and a horizontal cover 4 is fixed to the end of the protruding end of the electric push rod 32. The end of the protruding end of the electric push rod 32 is fixed in the middle of the upper surface of the cover 4. When the cover 4 is lowered by the electric push rod 32, it will cover the base 1. During heating and dehydration, heat loss can be further reduced.
[0034] Furthermore, a heat-insulating cotton lining 42 is attached and fixed to the inner surface of the cover 4. The heat-insulating cotton lining 42 is evenly distributed on the inner surface of the cover 4, which can improve the heat insulation effect of the cover 4. In addition, multiple through holes 41 are evenly opened on the upper surface of the cover 4. The through holes 41 penetrate the heat-insulating cotton lining 42 and communicate with the inside of the cover 4. The evaporated water vapor can be smoothly discharged to the outside through the through holes 41.
[0035] In use, select a copper cylinder 21 that matches the size and shape of the mold shell to be dewatered. Place the copper cylinder 21 on the surface of the heating plate 12 of the support groove 11 on the base 1 through the copper plate 2 at the bottom. The heating plate 12 and the electric push rod 32 are connected to the industrial control computer. Then, place the mold shell to be dewatered on the surface of the copper plate 2 inside the copper cylinder 21, with the pouring port of the mold shell facing upwards. Then, the electric push rod 32 drives the cover 4 to lower its height and place it on the surface of the base 1, so that all the copper cylinders 21 are placed inside the cover 4. Start the heating plate 12 to heat the copper plate 2. The heat is transferred to the copper cylinder 21, and the mold shell is fully heated from the outer ring and bottom, so that the water inside is evaporated and flows upward with the hot air flow and is discharged outward from the through hole 41, thus achieving the purpose of dewatering. After the dewatering is completed, control the electric push rod 32 to drive the cover 4 to rise its height. The mold shell can be clamped out with a clamp, and a new mold shell can be placed in. Then lower the cover 4 to continue the dewatering operation of the mold shell. When it is necessary to remove water from shells of other sizes or shapes, the heating plate 12 should be stopped and the copper cylinder 21 and copper plate 2 should be allowed to cool naturally before being replaced.
Claims
1. A precision casting dewatering device, comprising a base (1) and a copper cylinder (21), characterized in that: The base (1) has multiple support slots (11) of the same size equidistantly spaced on its surface. Each support slot (11) has an electric heating plate (12) embedded and fixed inside the base (1). The heating surface of the electric heating plate (12) is located in the support slot (11) on its upper surface. Multiple copper cylinders (21) are provided, and the copper cylinders (21) include various sizes and shapes. The bottom of the copper cylinder (21) is fixed with a copper plate (2) that is connected to the copper cylinder (21) as a whole. All copper plates (2) are the same size, and the copper plates (2) are placed in the support groove (11) and supported on the surface of the electric heating plate (12).
2. The precision casting dewatering device according to claim 1, characterized in that: The outer ring of the copper cylinder (21) is fitted with a heat insulation cotton sleeve (211), and the inner side of the heat insulation cotton sleeve (211) is pressed against the outer surface of the copper cylinder (21).
3. The precision casting dewatering device according to claim 1, characterized in that: A liftable cover (4) is provided above the base (1), and the cover (4) can be lowered to cover the base (1).
4. The precision casting dewatering device according to claim 3, characterized in that: Above the base (1), a plate (3) parallel to the base (1) is supported by vertical support rods (31) at its four corners. An electric push rod (32) is vertically installed in the middle of the surface of the plate (3), and a cover (4) is fixed to the end of the extended end of the electric push rod (32).
5. The precision casting dewatering device according to claim 3, characterized in that: The inner surface of the cover (4) is fitted with a heat insulation cotton lining (42), which is evenly distributed on the inner surface of the cover (4).
6. The precision casting dewatering device according to claim 5, characterized in that: The upper surface of the cover (4) is provided with a plurality of through holes (41), which simultaneously penetrate the heat insulation cotton lining (42) and communicate with the inside of the cover (4).
7. The precision casting dewatering device according to claim 1, characterized in that: The base (1) has four corner supports (13) fixed at the bottom, and the four corner supports (13) are the same size.