Preparation method and use method of water gap basin

Abstract

The preparation method comprises the following steps that a strength layer mold inner shell is placed in a strength layer mold outer shell, cement slurry is injected between the strength layer mold outer shell and the strength layer mold inner shell, and a strength layer is formed after demolding; a refractory layer mold is placed in the strength layer, refractory slurry is injected between the refractory layer mold and the strength layer, and a nozzle basin body with a refractory layer is formed after demolding; two baffle molds are placed in the middle of the nozzle basin body, porcelain tubes are installed at the bottoms of the baffle molds, resin sand is buried between the two baffle molds, and a slag blocking wall is formed after demolding. According to the preparation method of the water gap basin, the water gap basin body with the strength layer and the refractory layer is built step by step, the overall strength and high temperature resistance of the water gap basin body are improved, and the water gap basin can be repeatedly used and is a durable water gap basin. Only a small amount of resin sand is used for manufacturing the slag blocking wall before each time of use, so that the production cost is effectively reduced, the production efficiency is improved, and a solution is provided for intelligent casting production.

Description

Technical Field

[0001] The present invention relates to the field of casting technology, in particular to a preparation method and a use method of a nozzle basin. Background Art

[0002] As the use of 3D printed sand cores becomes increasingly mainstream in the foundry industry, the problem of slag inclusion in castings during the pouring process has become increasingly prominent. Currently, slag retaining basins are primarily used to filter the molten metal and further improve casting quality.

[0003] Existing sprue basins are handmade from sand. After casting, the sand mold collapses and becomes damaged. These disposable tools must be remade for reuse, increasing production costs. The collapsed sand also creates a large amount of industrial waste, which is environmentally unfriendly. Disposable sand sprue basins are only suitable for low-volume manual casting production and are difficult to meet the needs of large-scale, intelligent 3D casting production lines. Summary of the Invention

[0004] Based on this, it is necessary to provide a preparation method and a use method of a durable water spout basin to address the technical problem that the existing water spout basin cannot be reused multiple times.

[0005] In order to solve the above problems, the present invention adopts the following technical solutions:

[0006] The embodiment of the present invention discloses a method for preparing a spout basin, comprising the following steps:

[0007] The strength layer is constructed by placing an inner shell of the strength layer mold in an outer shell of the strength layer mold, injecting cement slurry between the inner shell of the strength layer mold and the outer shell of the strength layer mold, and forming the strength layer after demoulding;

[0008] Refractory layer construction: placing a refractory layer mold in the strength layer, injecting refractory slurry between the refractory layer mold and the strength layer, and forming a nozzle basin body with a refractory layer after demoulding;

[0009] To make the slag retaining wall, two baffle molds are placed in the middle of the water outlet basin, a porcelain tube is installed at the bottom of the baffle mold, resin sand is filled between the two baffle molds, and the slag retaining wall is formed after demoulding.

[0010] In one embodiment, during the construction of the strength layer, before injecting cement slurry, a plurality of reinforcing ribs are placed between the inner shell of the strength layer mold and the outer shell of the strength layer mold; after injecting cement slurry, the reinforcing ribs are implanted into the strength layer.

[0011] In one embodiment, during the strength layer construction process, before injecting cement slurry, the outlet mold is assembled with the strength layer mold inner shell and the strength layer mold outer shell.

[0012] In one embodiment, the fire-resistant layer is provided with an anti-turbulence structure.

[0013] In one embodiment, a drying step is further included, and the nozzle basin body is dried and fired after the refractory layer is hardened.

[0014] In one embodiment, the refractory slurry includes refractory powder and a binder.

[0015] In one embodiment, the refractory powder includes silicon oxide, aluminum oxide and magnesium oxide.

[0016] In one embodiment, the binder is water glass.

[0017] In one embodiment, refractory material is added to the cement slurry.

[0018] In a second aspect, the present invention further discloses a method for using any of the above-mentioned nozzle basins. After the nozzle basin is cast and used, the slag retaining wall is removed and the nozzle basin body is recycled and reused.

[0019] The technical solution adopted by the present invention can achieve the following beneficial effects:

[0020] The disclosed method for preparing a nozzle basin comprises a step-by-step process for constructing a nozzle basin body with a strength layer and a refractory layer. This improves the overall strength and high-temperature resistance of the nozzle basin, making it reusable and durable. Only a small amount of resin sand is used to create the slag retaining wall before each use, effectively reducing production costs and improving production efficiency, providing a solution for intelligent casting production. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic structural diagram of a water spout basin disclosed in an embodiment of the present invention;

[0022] Figure 2 for Figure 1 sectional view of

[0023] Description of reference numerals:

[0024] 100-sprue basin, 110-strength layer, 111-reinforcement ribs; 120-refractory layer, 121-anti-turbulence structure; 130-water outlet;

[0025] 200-slag retaining wall, 210-flow channel. DETAILED DESCRIPTION

[0026] To facilitate understanding of the present invention, the present invention will be described more fully below with reference to the accompanying drawings. The accompanying drawings illustrate preferred embodiments of the present invention. However, the present invention may be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the present disclosure.

[0027] It should be noted that when an element is referred to as being "disposed on" another element, it may be directly on the other element or there may be an element centered thereon. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an element centered thereon. The terms "vertical," "horizontal," "left," "right," "top," "bottom," "bottom end," "top end," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0029] The embodiment of the present invention discloses a method for preparing a sprue basin, including designing a durable sprue basin and manufacturing the durable sprue basin according to the design. Figure 1 、 Figure 2 As shown, the durable nozzle basin designed by the present invention includes a nozzle basin body 100 and a slag retaining wall 200. The nozzle basin body 100 is an inner cavity structural member with an opening at the top, and the slag retaining wall 200 is arranged in the nozzle basin body 100. The slag retaining wall 200 divides the inner cavity of the nozzle basin body 100 into a first cavity and a second cavity. Three flow channels 210 connecting the first cavity and the second cavity are arranged at intervals at the bottom of the slag retaining wall 200. A water outlet 130 is provided at the bottom of the second cavity. During casting, the molten metal in the ladle is poured into the first cavity, and the molten metal in the first cavity flows into the second cavity through the flow channel 210 and flows out through the water outlet 130. Since impurities such as slag tend to float in the molten metal, the impurities such as slag in the molten metal in the first cavity float to near the surface of the molten metal and are blocked by the slag retaining wall 200; the relatively pure molten metal in the lower part of the first cavity flows to the second cavity through the flow channel 210. The nozzle basin 100 includes an outer strength layer 110 and an inner fire-resistant layer 120. In order to improve the durability of the nozzle basin 100, reinforcing ribs 111 may be provided in the strength layer 110.

[0030] An anti-turbulence structure 121 can be provided inside the refractory layer 120 at the bottom of the nozzle basin 100, and used in conjunction with the slag retaining wall 200 to prevent the turbulent molten metal generated by the slag retaining wall 200 from flowing directly from the water outlet 130 into the casting cavity, thereby affecting the casting quality. Figure 2 As shown, a boss can be provided on the side of the bottom of the second cavity away from the slag retaining wall 200, and the water outlet 130 is provided at the boss; correspondingly, a boss can also be provided on the side of the bottom of the first cavity away from the slag retaining wall 200; the presence of the two bosses effectively blocks the turbulent molten metal, reduces the flow pressure of the molten metal, and allows the molten metal to flow out smoothly from the water outlet 130.

[0031] In the embodiment disclosed in the present invention, a durable nozzle basin can be prepared according to the design content of the above embodiment. The preparation method may include the steps of building a strength layer 110, building a refractory layer 120, and manufacturing a slag retaining wall 200:

[0032] The step of building the strength layer 110 is to use the strength layer mold inner shell and the strength layer mold outer shell to build the strength layer 110. The strength layer mold inner shell is placed inside the strength layer mold outer shell, and a plurality of reinforcing ribs 111 are cross-arranged between the strength layer mold inner shell and the strength layer mold outer shell; the downspout mold is assembled with the strength layer mold inner shell and the strength layer mold outer shell. Cement slurry is injected between the strength layer mold inner shell and the strength layer mold outer shell. After the cement slurry is hardened and formed, the strength layer mold inner shell and the strength layer mold outer shell are demoulded to form the strength layer 110 of the sprue basin 100, and the reinforcing ribs 111 are simultaneously implanted into the strength layer 110. Refractory charge can be added to the cement slurry to increase the refractoriness. It should be noted that the downspout mold is used to form the downspout 130 structure and is not demoulded in this step.

[0033] In the step of building the refractory layer 120, the mold shell is not used in this step. The strength layer 110 of the nozzle basin 100 formed in the step of building the strength layer 110 can be used as the mold shell, and the refractory layer mold (inner shell) is used to build the refractory layer 120. The refractory layer mold is placed in the strength layer 110 of the nozzle basin 100 and assembled with the downspout mold. Refractory slurry is injected between the refractory layer mold and the strength layer 110. After the refractory slurry is hardened and formed, the refractory layer mold and the downspout mold are demoulded to form the nozzle basin 100 having the outer strength layer 110, the inner refractory layer 120 and the downspout 130 structure. In addition, the refractory layer mold should be provided with a forming portion of the anti-turbulence structure 121. During the building process of this step, the anti-turbulence structure 121 is simultaneously formed on the inner side of the refractory layer 120. The refractory slurry may include refractory powder and a binder. Among them, the refractory powder is preferably a mixture of silicon oxide, aluminum oxide and magnesium oxide; the binder is preferably water glass, water and a combination thereof.

[0034] The slag retaining wall 200 is manufactured using two baffle molds. Two baffle molds are placed in the middle of the nozzle basin 100, and three porcelain tubes are placed at the bottom of the baffle molds to form the flow channel 210. Resin sand is filled between the two baffle molds. After the resin sand hardens and forms, the baffle molds are demolded, forming the slag retaining wall 200 with the flow channel 210. The slag retaining wall 200 is integrated with the nozzle basin 100. The resin sand can be foundry sand mixed with resin and curing agent.

[0035] In the embodiment disclosed in the present invention, between the step of building the refractory layer 120 and the step of making the slag retaining wall 200, after the refractory layer mold and the water outlet mold are demolded to form a water outlet basin body 100 having an outer strength layer 110, an inner refractory layer 120 and a water outlet 130 structure, the water outlet basin body 100 can be dried and fired.

[0036] On the second aspect, an embodiment of the present invention also discloses a method for using the nozzle basin described in any of the above embodiments. During the first casting and use of the nozzle basin, the refractory layer 120 automatically sintered into a stable and durable sintered layer after encountering high-temperature molten metal. After each use of the durable nozzle basin, the slag retaining wall 200 will partially or completely collapse. After the slag retaining wall 200 is removed and the waste of the slag retaining wall 200 is cleaned, the nozzle basin body 100 can be recycled and reused. When reused, it can be selected whether to re-make the slag retaining wall 200 in the nozzle basin body 100 according to the actual needs of casting. If it is necessary to make a slag retaining wall 200, its production steps can be the same as the production steps of the slag retaining wall 200 described in the above embodiments, and this embodiment will not go into details.

[0037] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0038] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the patent for this invention shall be determined by the appended claims.

Claims

1. A method for preparing a water outlet basin, characterized in that: The steps include: The strength layer is constructed by placing an inner shell of the strength layer mold inside an outer shell of the strength layer mold, injecting cement slurry between the inner shell of the strength layer mold and the outer shell of the strength layer mold, and forming the strength layer after demoulding; Refractory layer construction: a refractory layer mold is placed in the strength layer, a refractory slurry is injected between the refractory layer mold and the strength layer, and a nozzle basin body with a refractory layer is formed after demoulding; The slag retaining wall is made by placing two baffle molds in the middle of the water outlet basin, installing a porcelain tube at the bottom of the baffle mold, and filling resin sand between the two baffle molds to form the slag retaining wall after demoulding.

2. The method for preparing a water spout basin according to claim 1, characterized in that: During the construction of the strength layer, before injecting cement slurry, a plurality of reinforcing ribs are placed between the inner shell of the strength layer mold and the outer shell of the strength layer mold; After the cement slurry is injected, the reinforcing bars are implanted into the strength layer.

3. The method for preparing a water spout basin according to claim 1, characterized in that: The fire-resistant layer is provided with an anti-turbulence structure.

4. The method for preparing a water spout basin according to claim 1, characterized in that: During the construction of the strength layer, before injecting cement slurry, the outlet mold is assembled with the inner shell of the strength layer mold and the outer shell of the strength layer mold.

5. The method for preparing a water spout basin according to claim 1, characterized in that: The method further comprises a drying step, wherein after the refractory layer is hardened, the nozzle basin body is dried and fired.

6. The method for preparing a water spout basin according to claim 1, characterized in that: The refractory slurry includes refractory powder and a binder.

7. The method for preparing a spout basin according to claim 6, characterized in that: The binder is water glass.

8. The method for preparing a water spout basin according to claim 6, characterized in that: The refractory powder comprises silicon oxide, aluminum oxide and magnesium oxide.

9. The method for preparing the spout basin according to claim 1, characterized in that: Refractory charge is added into the cement slurry.

10. A method for using the spout basin according to any one of claims 1 to 9, characterized in that: After the nozzle basin is cast and used, the slag retaining wall is removed and the nozzle basin body is recycled and reused.

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