Pouring basin and aluminum alloy low-pressure casting mold
By embedding aluminum silicate refractory material molding lining and flow guide surface inside the pouring basin, the problem of pouring basin cracking due to temperature difference is solved, thereby improving refractory performance and extending service life.
Patent Information
- Application Number
- CN202422520976.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-18
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2034-10-18
AI Technical Summary
Existing pouring basins are prone to cracking under temperature changes, affecting their service life and making them unusable.
The molded lining, made of aluminum silicate refractory material, is machined into the required shape and embedded inside the outer shell of the sprue basin. Combined with the refractory release layer and the flow guide surface, it forms an insulation layer to resist temperature changes.
It improves the fire resistance of the pouring basin, prevents cracking, extends service life, and optimizes the flow of molten metal through the diversion guide surface, reducing thermal deformation and ensuring the stability and durability of the pouring basin.
Smart Images
Figure CN223571992U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of casting mold technology, and more specifically, it relates to a pouring basin and an aluminum alloy low-pressure casting mold. Background Technology
[0002] In low-pressure casting of aluminum alloys, molten metal flows from bottom to top through the gate and into the forming mold. Through actual production, it has been found that reasonably increasing the number of gates makes it easier to achieve uniform filling of the casting and improve product quality. However, due to the size of the low-pressure casting machine, it is not easy to achieve multi-gate filling by installing multiple liquid riser pipes. Therefore, in actual production, a gating basin is often used to achieve the conversion of filling with multiple gates in one turn.
[0003] Currently, pouring basins are made by manually bonding a sticky ceramic clay to the inside of the basin to form an inner cavity. The ceramic clay is then heated and shaped before use. However, when using this pouring basin, the material is prone to cracking due to alternating temperature changes. Molten metal can then seep into the cracks, rendering the basin unusable and affecting its lifespan. Utility Model Content
[0004] The purpose of this utility model is to provide a pouring basin that addresses the problem of ceramic clay cracking and allowing molten metal to seep into it after repeated temperature changes, thus affecting the service life of the pouring basin.
[0005] To achieve the above objectives, the technical solution adopted by this utility model is: to provide a pouring basin, comprising:
[0006] The sprue basin shell has an internal installation chamber, a bottom through hole at the bottom of the sprue basin shell, and multiple top through holes at the top of the sprue basin shell. Both the bottom through hole and the top through hole are connected to the installation chamber.
[0007] A molded lining, which is made of aluminum silicate refractory material, is embedded in the installation chamber. The interior of the molded lining has a flow chamber. A liquid inlet is provided at the bottom of the molded lining and is connected to the bottom through hole. Multiple liquid outlets are provided circumferentially at the top of the molded lining and are connected to the multiple top through holes one by one.
[0008] In one possible implementation, the inner wall of the flow chamber is provided with a fire-resistant release layer.
[0009] In a possible implementation, a top of the overflow chamber is provided with a distribution body corresponding to the liquid inlet, and the liquid outlets are distributed around the distribution body. The distribution body is provided with a distribution guide surface for guiding the molten metal entering the overflow chamber through the liquid inlet to the liquid outlets.
[0010] In a possible implementation, the distribution guide surface is inclined upward from bottom to the liquid outlets.
[0011] In a possible implementation, the nozzle pot shell comprises:
[0012] a shell body, a top of the shell body is provided with an open end, and a bottom through hole is arranged in a middle of a bottom of the shell body;
[0013] a shell end cover, detachably mounted on the open end of the shell body, and a top through hole is arranged on the shell end cover.
[0014] In a possible implementation, an external contour of the forming liner is matched with an internal contour of the mounting chamber, and the forming liner is mounted on the mounting chamber in a fit manner.
[0015] In a possible implementation, the forming liner comprises:
[0016] a lower liner, mounted on a lower part of the mounting chamber, and a top of the lower liner is provided with an open end, and the liquid inlet is arranged in a middle of a bottom of the lower liner;
[0017] an upper liner, coupled to the open end of the lower liner, and the liquid outlets are arranged on the upper liner.
[0018] In a possible implementation, a liquid inlet pipe is arranged in the middle of the bottom of the lower liner, the liquid inlet pipe penetrates through the bottom through hole, and the liquid inlet is arranged in the liquid inlet pipe; and a plurality of liquid outlet pipes are arranged around a top of the upper liner, the liquid outlet pipes penetrate through the top through holes one by one, and the liquid outlets are arranged in the liquid outlet pipes one by one.
[0019] In a possible implementation, a lower end of the liquid outlet is provided with an upper conical flow guide, and an upper end of the liquid inlet is provided with a lower conical flow guide.
[0020] The beneficial effect of the sprue basin provided by the utility model lies in that, compared with the prior art, the forming inner lining is arranged in the installation chamber, thereby forming a heat preservation layer inside the sprue basin shell. The forming inner lining made of aluminum silicate refractory material can directly obtain the required shape through machining, and the forming inner lining made of aluminum silicate refractory material can withstand the change of temperature difference without cracking, and at the same time, the forming inner lining has high fire resistance. The sprue basin provided by the utility model utilizes the aluminum silicate refractory material formed through machining to make the forming inner lining, and the forming inner lining is directly embedded inside the sprue basin shell, can withstand the change of temperature difference, avoids the metal liquid from penetrating into the sprue basin due to cracking, and guarantees the service life of the sprue basin as a whole.
[0021] The utility model also provides an aluminum alloy low-pressure casting mould.
[0022] The beneficial effect of the aluminum alloy low-pressure casting mould provided by the utility model lies in that, compared with the prior art, since the aluminum alloy low-pressure casting mould uses the above-mentioned sprue basin, the aluminum alloy low-pressure casting mould has the same beneficial effect as the sprue basin, and details are not repeated here. BRIEF DESCRIPTION OF DRAWINGS
[0023] In order to more clearly illustrate the technical scheme in the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.
[0024] Figure 1 The utility model provides an explosion map of a sprue basin;
[0025] Figure 2 The utility model provides a plan view of a sprue basin;
[0026] Figure 3 For Figure 2 The sectional view along A-A;
[0027] Figure 4 The utility model provides the perspective drawing of the shell main body;
[0028] Figure 5 The utility model provides the perspective drawing of the shell end cover;
[0029] Figure 6 The utility model provides the perspective drawing of the lower inner lining Figure 1 ;
[0030] Figure 7The utility model provides a three -dimensional of lower inner lining Figure 2 ;
[0031] Figure 8 The utility model provides a bottom view of upper inner lining
[0032] Figure 9 The utility model provides a side view of upper inner lining.
[0033] In the figure:
[0034] 100, shell main body, 110, bottom through hole;
[0035] 200, shell end cover, 210, top through hole;
[0036] 300, lower inner lining, 310, liquid inlet, 320, liquid inlet pipe, 330, lower conical flow guide;
[0037] 400, upper inner lining, 410, liquid outlet, 420, liquid outlet pipe, 430, upper conical flow guide;
[0038] 500, shunt, 510, shunt guide surface. DETAILED DESCRIPTION
[0039] In order to make the technical problem, technical scheme and beneficial effect that the utility model wants to solve more clearly, the following is combined with the figure and example, and the utility model is further described in detail.Should understand, the specific example described here is only used to explain the utility model, and is not used to limit the utility model.
[0040] Unless otherwise explicitly defined, such as using the term "first", "second" or "third", etc., is for distinguishing different objects, and is not used to describe a specific order.
[0041] Unless otherwise explicitly defined, for the orientation words, such as using the term "center", "transverse", "longitudinal", "horizontal", "vertical", "top", "bottom", "inner", "outer", "upper", "lower", "front", "back", "left", "right", "clockwise", "counterclockwise", "high", "low", etc., the orientation or position relationship is based on the orientation and position relationship shown in the drawing, and is only for the convenience of describing the utility model and simplifying the description, and is not used to indicate or imply that the device or element indicated must have a specific orientation or be constructed and operated in a specific orientation, so it cannot be understood as limiting the specific protection scope of the utility model.
[0042] Please refer to Figures 1 to 9 , now a kind of sprue basin provided by the utility model will be described.A kind of sprue basin, including sprue basin shell and forming inner lining.
[0043] The inside of the sprue basin shell is provided with a mounting chamber, the bottom of the sprue basin shell is provided with a bottom through hole 110, and the top of the sprue basin shell is provided with a plurality of top through holes 210, and the bottom through hole 110 and the top through hole 210 are both communicated with the mounting chamber; the forming lining is made of aluminum silicate refractory material, is embedded in the mounting chamber, and the inside of the forming lining is provided with an overflow chamber; the bottom of the forming lining is provided with a liquid inlet 310, the liquid inlet 310 is communicated with the bottom through hole 110, and the top of the forming lining is circumferentially provided with a plurality of liquid outlets 410, and the plurality of liquid outlets 410 are communicated with the plurality of top through holes 210 one by one.
[0044] Compared with the prior art, the forming lining is embedded in the mounting chamber, so that a heat preservation layer is formed in the inside of the sprue basin shell. The forming lining made of aluminum silicate refractory material can directly obtain the required shape through machining, and the forming lining is directly embedded in the mounting chamber of the sprue basin shell. The forming lining made of aluminum silicate refractory material can withstand temperature changes without cracking, and has high fire resistance. The sprue basin provided by the utility model utilizes the aluminum silicate refractory material formed by machining to make the forming lining, which is directly embedded in the inside of the sprue basin shell, can withstand temperature changes, avoids the metal liquid from penetrating due to cracking, and ensures the service life of the sprue basin as a whole.
[0045] The forming lining can be made of an aluminum silicate plate, which is machined into the required shape. Then, the forming lining after machining is coated with a curing agent for multiple times until the curing agent completely penetrates the heat preservation layer, and is placed in a cool place for shade drying. After drying, it is observed whether there are burrs, peeling and other protrusions on the inner wall of the forming lining. If there are, the inner wall needs to be polished. The aluminum silicate combined with the curing agent can greatly improve the heat resistance and surface density of the aluminum silicate, thereby solving the problem of cracking of the forming lining during production.
[0046] In addition, the inner wall of the overflow chamber is provided with a refractory release layer, and the refractory release layer is made of boron nitride paint. Before coating the inner wall of the overflow chamber with boron nitride paint, the inner wall of the overflow chamber is polished, and then 3-4 layers of boron nitride paint are coated. When the metal liquid reciprocally washes the inner wall of the overflow chamber, the boron nitride paint can effectively slow down the wall sticking phenomenon of the metal liquid, and can effectively reduce the cleaning difficulty after the mold is taken offline.
[0047] The top of the overflow chamber is provided with a flow splitter 500 corresponding to the liquid inlet 310, and a plurality of liquid outlets 410 are distributed on the outer periphery of the flow splitter 500. The outer periphery of the flow splitter 500 is provided with a flow splitting guide surface 510 for guiding the molten metal entering the overflow chamber through the liquid inlet 310 to be split to the plurality of liquid outlets 410. The molten metal enters the overflow chamber from the liquid inlet 310, and after impacting the flow splitter 500, it is guided by the flow splitting guide surface 510 and discharged into the mold from the plurality of liquid outlets 410. The heat preservation material forming the inner part of the sprue basin is formed by the forming liner, and the molten metal is guided by the flow splitting guide surface 510 on the flow splitter 500, avoiding direct impact on the upper part of the sprue basin, reducing the thermal deformation of the upper part of the sprue basin, and prolonging the service life of the sprue basin.
[0048] Specifically, the flow splitting guide surface 510 is inclined from bottom to top towards the plurality of liquid outlets 410. The flow splitter 500 is a block structure, and the flow splitting guide surface 510 has a plurality of inclined surfaces or arc surfaces each oriented towards the plurality of liquid outlets 410. Alternatively, the flow splitter 500 is a whole cone structure, and the flow splitting guide surface 510 is a continuous inclined surface or arc surface surrounding the outer periphery of the cone structure.
[0049] Please refer to Figure 4 and Figure 5 , the sprue basin shell includes a shell body 100 and a shell end cover 200. The top of the shell body 100 has an open end, and a bottom hole 110 is formed in the middle of the bottom of the shell body 100. The shell end cover 200 is detachably mounted on the open end of the shell body 100, and a top hole 210 is formed on the shell end cover 200. Among them, the shell end cover 200 is buckled on the open end of the top of the shell body 100, and a plurality of locking bolts are threaded through the shell end cover 200 along the outer periphery of the shell end cover 200 and screwed into the open end of the shell body 100. Open the shell end cover 200, place the forming liner in the mounting chamber formed by the shell body 100 and the shell end cover 200, and then install the shell end cover 200 on the open end of the shell body 100, so that the forming liner is stably arranged inside the sprue basin shell.
[0050] Preferably, please refer to Figure 3 The outer contour of the forming liner is matched with the inner contour of the mounting chamber, and the forming liner is fitted in the mounting chamber. The forming liner can remain stable inside the sprue basin shell and will not displace.
[0051] Please refer to Figures 6 to 9The forming inner liner comprises a lower inner liner 300 and an upper inner liner 400. The lower inner liner 300 is fitted to the lower part of the installation chamber, and the top of the lower inner liner 300 is provided with an open end, and the liquid inlet 310 is located at the middle of the bottom of the lower inner liner 300. The upper inner liner 400 is buckled to the open end of the lower inner liner 300, and a plurality of liquid outlets 410 are located on the upper inner liner 400. The forming inner liner is designed in two parts, i.e. the lower inner liner 300 and the upper inner liner 400. The lower inner liner 300 is first inserted into the bottom of the inner cavity of the shell main body 100 from top to bottom, and then the upper inner liner 400 is further inserted into the top of the inner cavity of the shell main body 100. At this time, the upper end surface of the upper inner liner 400 is flush with the upper end port of the shell main body 100. Finally, the shell end cover 200 is buckled and connected to the upper end port of the shell main body 100, so that the forming inner liner is stably installed in the installation chamber of the pouring basin shell.
[0052] In addition, the forming inner liner designed in two parts can facilitate the brushing of boron nitride paint inside, and any one of the lower inner liner 300 and the upper inner liner 400 can be replaced individually when a problem occurs.
[0053] Specifically, the middle of the bottom of the lower inner liner 300 is provided with a liquid inlet pipe 320, the liquid inlet pipe 320 penetrates through the bottom through hole 110, the outer wall of the liquid inlet pipe 320 is fitted with the inner wall of the bottom through hole 110, and the liquid inlet 310 is formed in the liquid inlet pipe 320. The top of the upper inner liner 400 is circumferentially provided with a plurality of liquid outlet pipes 420, the plurality of liquid outlet pipes 420 correspondingly penetrate through the plurality of top through holes 210, the outer wall of the liquid outlet pipe 420 is fitted with the inner wall of the top through hole 210, and the plurality of liquid outlets 410 are correspondingly formed in the plurality of liquid outlet pipes 420.
[0054] Preferably, referring to Figure 6 and Figure 8 The lower end of the liquid outlet 410 is provided with an upper conical flow guide 430. The metal liquid after being divided by the flow divider 500 first enters the upper conical flow guide 430. The upper conical flow guide 430 can buffer the impact of the metal and guide the metal liquid into the liquid outlet 410. The upper end of the liquid inlet 310 is provided with a lower conical flow guide 330. The metal liquid enters the flow chamber under the guidance of the lower conical flow guide 330, which can reduce the turbulence phenomenon of the metal liquid. It can be seen that the upper conical flow guide 430 and the lower conical flow guide 330 can both achieve the purpose of stable delivery of the metal liquid.
[0055] The utility model also provides a kind of aluminum alloy low-pressure casting mould, and the aluminum alloy low-pressure casting mould uses above-mentioned pouring basin, so it has same beneficial effect with pouring basin, and here no longer repeat.
[0056] The above merely describes preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement, and improvement within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. A pouring basin, characterized in that, include: The outer shell of the sprue basin has an internal installation chamber. The bottom of the sprue basin has a bottom through hole (110), and the top of the sprue basin has multiple top through holes (210). The bottom through hole (110) and the top through hole (210) are both connected to the installation chamber. A molded lining, the molded lining being made of aluminum silicate refractory material, the molded lining being embedded in the installation chamber, the molded lining having an internal flow chamber, the bottom of the molded lining having a liquid inlet (310) connected to the bottom through hole (110), the top of the molded lining having multiple liquid outlets (410) circumferentially connected to the multiple top through holes (210); The top of the flow chamber is provided with a flow divider (500) corresponding to the inlet (310), and a plurality of outlets (410) are distributed on the outer periphery of the flow divider (500). The outer periphery of the flow divider (500) has a flow divider guide surface (510), which is used to guide the molten metal entering the flow chamber through the inlet (310) to the plurality of outlets (410).
2. The pouring basin as described in claim 1, characterized in that, The inner wall of the flow chamber is provided with a refractory release layer molding lining.
3. A pouring basin as described in claim 1, characterized in that, The diversion guide surface (510) is inclined from bottom to top toward the plurality of liquid outlets (410).
4. A pouring basin as described in claim 1 or 2, characterized in that, The outer shell of the pouring basin includes: The outer shell body (100) has an open end at the top and a bottom through hole (110) at the middle of the bottom of the outer shell body (100); The outer casing end cap (200) is detachably installed on the open end of the outer casing body (100), and the top through hole (210) is opened on the outer casing end cap (200).
5. A pouring basin as described in claim 1 or 2, characterized in that, The outer contour of the molded liner is adapted to the inner contour of the mounting chamber, and the molded liner is fitted and installed in the mounting chamber.
6. A pouring basin as described in claim 5, characterized in that, The molded liner includes: The lower liner (300) is fitted to the lower part of the mounting chamber. The top of the lower liner (300) has an open end, and the liquid inlet (310) is located in the middle of the bottom of the lower liner (300). An upper liner (400) is fastened to the open end of the lower liner (300), and a plurality of liquid outlets (410) are located on the upper liner (400).
7. A pouring basin as described in claim 6, characterized in that, A liquid inlet pipe (320) is provided in the middle of the bottom of the lower liner (300), the liquid inlet pipe (320) passes through the bottom through hole (110), and the liquid inlet (310) is formed in the liquid inlet pipe (320); a plurality of liquid outlet pipes (420) are provided circumferentially on the top of the upper liner (400), the plurality of liquid outlet pipes (420) pass through the plurality of top through holes (210) one by one, and the plurality of liquid outlets (410) are formed in the plurality of liquid outlet pipes (420) one by one.
8. A pouring basin as described in claim 1 or 2, characterized in that, The lower end of the liquid outlet (410) is provided with an upper conical guide port (430), and the upper end of the liquid inlet (310) is provided with a lower conical guide port (330).
9. A low-pressure casting mold for aluminum alloy, characterized in that, Including a pouring basin as described in any one of claims 1-8.