Gel centrifugal forming device for metal parts with complex structures

Abstract

The utility model provides a gel centrifugal forming device for a metal part with a complex structure, and relates to the technical field of precise special-shaped metal part forming. The complex structure metal part gel centrifugal forming device comprises a table type centrifugal machine, the table type centrifugal machine comprises a centrifugal machine cover, a touch panel and a wireless temperature measuring sensor, a split type centrifugal tube is fixed in the table type centrifugal machine through a fixing clamping sleeve, and a split type mold is arranged in the split type centrifugal tube. According to the utility model, through the split structure arrangement of each part in the device structure and the arrangement of the wireless temperature measurement sensor, a reliable method can be provided for forming metal parts with various sizes and complex structures; the resource utilization rate is high, the process is short, the forming efficiency, the yield and the forming precision are high, and large-scale industrial production, popularization and application are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of forming precision special-shaped metal parts, in particular to a gel centrifugal forming device for metal parts with complex structures. Background Art

[0002] As a near-net-shape forming technology, gel injection molding has attracted much attention in the field of complex structure metal parts forming in recent years. The principle is to add a small amount of organic monomer to the metal powder suspension, use catalysts and initiators to make the liquid slurry solidify in situ in the complex shape mold to form a green body, and obtain the target parts after degreasing and sintering. Compared with traditional complex forming processes, gel injection molding technology has obvious advantages such as uniform components, low cost, small consumables, high yield and simple operation. However, due to the limitations of slurry solid content and fluidity, some metal parts formed by gel injection molding have problems such as high porosity, low density and poor forming quality.

[0003] In comparison, the gel centrifugal molding technology combines gel injection molding with centrifugal molding, retaining the advantages of gel injection molding while using centrifugal molding to solve the problems of high porosity, low density, and poor molding quality caused by gel injection molding. That is, during the curing of the slurry, the suspended slurry is used to completely fill the mold and discharge bubbles and excess binder with the help of centrifugal force, which greatly improves the forming quality and product density of complex-shaped metal parts. However, after centrifugal curing, the green body often fits tightly with the mold, and the mold is difficult to remove from the centrifuge tube, resulting in the problem of demolding difficulties, which causes low forming efficiency, low yield, and low mold reuse rate, which still limits its application. For example, the thin wall and thin neck of the green body are very easy to deform or break due to excessive force during the demolding process; the sharp corners and narrow parts of the mold are very easy to deform or tear due to excessive pulling; the green body and the mold or the mold and the centrifuge tube are tightly adsorbed and cannot be removed; large-sized parts are difficult to operate, etc. Therefore, it is urgent to develop a gel centrifugal molding device that is easy to demold and ensures forming quality and efficiency.

[0004] For example: Chinese patent CN102039412A discloses a gel centrifugal molding method for metal parts, which focuses on the preparation of suspended slurry. The centrifugal speed is very high. Since a plastic tube inserted in an aluminum drum is used as a centrifugal mold cavity, the shape of the metal material that can be formed can only be the shape of the plastic tube, and the removal of the blank is achieved by softening the plastic tube. Obviously, plastic components will remain on the surface of the prepared metal material, which has a great impact on the loss of the plastic tube and the yield of the metal material.

[0005] Chinese patent CN117696893A discloses a method for gel centrifugal molding of complex-shaped titanium alloy parts, which includes preparation of plastic models of complex shapes, modification of centrifuge tubes, preparation of molds for centrifugal molding, installation of molds for centrifugal molding, preparation of titanium powder suspension slurry, preparation of high-density complex-shaped titanium alloy blanks and preparation of high-density and high-performance complex-shaped titanium alloy parts; however, it does not provide a detailed design of whether a split line and a fixed ferrule structure are set for the detachable structure, and the centrifugal process is fully enclosed without a monitoring device, and cannot be monitored in real time and precisely controlled.

[0006] Based on this, the utility model designs and provides a gel centrifugal molding device for metal parts with complex structures in response to the above limitations. Utility Model Content

[0007] In order to solve the problem that the green body of the prior art gel centrifugal molding technology often fits tightly to the mold after centrifugal curing, and the mold is difficult to remove from the centrifuge tube, resulting in the problem of demoulding difficulty, thus causing low molding efficiency, low yield rate, low mold reuse rate and other problems, there are also technical problems such as the centrifugal mold cavity plastic tube cannot be used to prepare metal parts with complex shapes and large loss; therefore, the embodiment of the utility model provides a complex structure metal parts gel centrifugal molding device that can solve the above problems. The technical solution is as follows:

[0008] A device for gel centrifugal molding of metal parts with complex structures, comprising a desktop centrifuge, the desktop centrifuge comprising a centrifuge cover, a touch panel and a wireless temperature sensor, a split centrifuge tube fixed in the desktop centrifuge by a fixed ferrule, and a split mold is arranged in the split centrifuge tube.

[0009] Optionally, the number of the split centrifuge tubes is 2-10 pairs, the material is stainless steel, and the shape is cylindrical.

[0010] Optionally, the desktop centrifuge is equipped with a horizontal rotor with a rotation speed of 500-14000 rpm.

[0011] Optionally, the split centrifuge tube is split along the height direction by machining.

[0012] Optionally, the split centrifuge tube includes a left-right half-partition, a third-partition, a fourth-partition or other split structures that are easy to demould.

[0013] Optionally, the structure of the fixed ferrule is composed of 3-5 steel rings and steel bars, the steel rings are arranged vertically and equidistantly, and are fixed by steel bars to form an integral ferrule.

[0014] Optionally, the split mold is made by inverting a complex shape model, and the split method is determined by the structure and size of the model.

[0015] Optionally, the complex shape model is prepared by 3D printing according to the enlarged target part design drawing by 1.15-1.3 times according to the sintering shrinkage ratio, with a surface roughness of ≤3.0μm, and the model material is plastic, photosensitive resin, polyurethane or metal.

[0016] Optionally, the split mold is designed to be a horizontal or vertical split structure according to the shape characteristics of the complex shape model, and the split mold is designed to be a single-cavity mold or a multi-cavity mold according to the size of the split centrifuge tube and the complex shape model.

[0017] Optionally, when the model structure is axisymmetric and the inner cavity diameter is 100-200mm, the split mold is divided into four equal parts along the axis; when the model structure is vertically plane symmetrical and the inner cavity diameter is ≤100mm, the split mold is divided into two equal parts vertically; when the model structure is horizontally plane symmetrical and the inner cavity diameter is ≤100mm, the split mold is divided into two equal parts horizontally.

[0018] Optionally, the split centrifuge tube and the split mold are provided with a split line, the split line is serrated or corrugated, and the width of the split line is 5-20 mm.

[0019] Optionally, when the split line of the split centrifuge tube is serrated, the width of the split line is 5-20mm, and the split line of the split mold is corrugated, and the width of the split line is 5-20mm; when the split line of the split centrifuge tube is corrugated, the width of the split line is 5-20mm, and the split line of the split mold is serrated, and the width of the split line is 5-20mm.

[0020] Optionally, the complex structure metal parts gel centrifugal molding device also includes a wireless temperature sensor, which is located on the inner wall of the centrifugal chamber and is used to monitor the slurry solidification condition.

[0021] Optionally, the metal powder suspension slurry is composed of a water-based or non-aqueous gel system and metal powder, wherein the solid content of the metal powder is 45-65%, the remainder is the gel system, and the slurry viscosity is not higher than 5 Pa·s.

[0022] Optionally, the centrifugation time is determined by the in-situ curing time of the slurry, and the in-situ curing time of the slurry is determined by the content of the added initiator and catalyst, and the centrifugation time is generally 10-120 minutes.

[0023] Compared with the prior art, the above technical solution has at least the following beneficial effects:

[0024] The above scheme, the utility model proposes a gel centrifugal molding device for complex structure metal parts, which can solve the technical problems of existing gel centrifugal molding metal parts such as difficulty in demolding, the mold cannot be reused, the low density of the prepared metal parts, and the uneven distribution of component properties, thereby reducing production costs and improving economic benefits.

[0025] The split mold adopted by the utility model ensures that the green billet has no deformation, damage, internal cracks and surface defects during the green billet removal process, avoids the situation where the green billet and the mold cannot be removed due to excessive adsorption, improves the reusability of the mold, the efficiency, yield rate and forming accuracy of the gel centrifugal molding of complex-shaped metal parts, and reduces the mold cost of the gel centrifugal molding of complex-shaped metal parts.

[0026] The split centrifuge tube adopted by the utility model ensures that the mold is not damaged during the process of the mold being removed from the centrifuge tube, and avoids the situation where the mold and the centrifuge tube cannot be removed due to excessive adsorption, thereby improving the operability of gel centrifugal molding demoulding of complex-shaped metal parts and reducing the application cost of the mold.

[0027] The split lines of the split centrifuge tube and the split mold adopted in the utility model are serrated or corrugated, so that the various split modules can be better meshed together when assembled, ensuring that there is no gap between the split centrifuge tube and the split mold after assembly, and avoiding technical defects in the organization and performance of the formed blank caused by the device structure.

[0028] The gel centrifugal molding device of the utility model has high design flexibility and simple operation. The split structure of the mold and the centrifuge tube can be designed according to the complexity of the target parts, thereby maximizing the forming quality and forming efficiency of complex structure metal parts. It has a wide range of applications and can provide a reliable method for forming complex structure metal parts of various sizes, which is conducive to large-scale industrial production.

[0029] The gel centrifugal molding device of the utility model has low requirements on the strength of the green body of the complex structure being formed, and the metal powder suspension slurry has high flexibility in configuration and a wide range of applications. It is not limited to the forming of metal parts, but is also suitable for the forming of ceramic parts, and has high forming efficiency, good quality and low cost.

[0030] In summary, compared with other traditional methods, the method of the utility model can provide a reliable method for forming metal parts with complex structures of various sizes through the split structural settings of each component in the device structure and other structural settings; it has high resource utilization, short process, high forming efficiency, yield rate and forming accuracy, which is conducive to large-scale industrial production and promotion and application. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0032] Figure 1 This is a schematic diagram of the structure of a complex structure metal part gel centrifugal molding device in the utility model, wherein: 1-desktop centrifuge, 2-fixed ferrule, 3-centrifuge cover, 4-split centrifuge tube, 5-split mold, 6-touch panel, 7-metal powder suspension slurry;

[0033] Figure 2 It is a schematic diagram of the structure of a 1 / 2 centrifuge tube of a complex structure metal part gel centrifugal molding device in the utility model;

[0034] Figure 3 It is a schematic diagram of the inner cavity structure of a 1 / 4 mold of a complex structure metal part gel centrifugal molding device in the utility model;

[0035] Figure 4 The utility model is a schematic diagram of a complex structure metal part blank structure of a complex structure metal part gel centrifugal molding device. DETAILED DESCRIPTION

[0036] The technical solution of the present utility model is described below in conjunction with the accompanying drawings.

[0037] In the embodiments of the present invention, words such as "exemplarily" and "for example" are used to indicate examples, illustrations or explanations. Any embodiment or design described as "example" in the present invention should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of the word "example" is intended to present the concept in a specific way. In addition, in the embodiments of the present invention, the meaning expressed by "and / or" can be both, or it can be either of the two.

[0038] In the embodiments of the present invention, "image" and "picture" can sometimes be used interchangeably. It should be noted that when the difference between them is not emphasized, the meanings they want to express are the same. "of", "corresponding" and "corresponding" can sometimes be used interchangeably. It should be noted that when the difference between them is not emphasized, the meanings they want to express are the same.

[0039] In the embodiments of the present invention, sometimes a subscript such as W1 may be written as a non-subscript such as W1. When the difference is not emphasized, the meanings to be expressed are consistent.

[0040] In order to make the technical problems to be solved, technical solutions and advantages of the present invention more clear, a detailed description will be given below in conjunction with the accompanying drawings and specific embodiments.

[0041] A device for gel centrifugal molding of metal parts with complex structures comprises a desktop centrifuge, the desktop centrifuge comprises a centrifuge cover and a touch panel, a split centrifuge tube is fixed in the desktop centrifuge by a fixed ferrule, and a split mold is arranged in the split centrifuge tube.

[0042] Among them, the number of the split centrifuge tubes is 5 pairs, the material is stainless steel, the shape is cylindrical, and the size varies according to the size of the centrifuge.

[0043] Wherein, the desktop centrifuge is equipped with a horizontal rotor with a rotation speed of 500-14000rmp.

[0044] Wherein, the split centrifuge tube is split along the height direction by machining.

[0045] The split centrifuge tube includes a left-right half-partition, a third-partition, a fourth-partition or other split structures that are easy to demould.

[0046] The fixed ferrule is composed of 3-5 steel rings and steel bars. The steel rings are arranged vertically and equidistantly and fixed by steel bars to form an integral ferrule.

[0047] The split mold is made by inverting a complex shape model, and the split method is determined by the model structure and size.

[0048] Among them, the complex shape model is prepared by 3D printing according to the enlarged target part design drawing by 1.15-1.3 times according to the sintering shrinkage ratio. The surface roughness is ≤3.0μm, and the model material is plastic, photosensitive resin, polyurethane or metal.

[0049] The split mold is designed to be a horizontal or vertical split structure according to the shape characteristics of the complex shape model, and is designed to be a single-cavity mold or a multi-cavity mold according to the size of the split centrifuge tube and the complex shape model.

[0050] Among them, when the model structure is axially symmetrical and the inner cavity diameter is 100-200mm, the split mold is divided into four equal parts along the axis; when the model structure is vertically plane symmetrical and the inner cavity diameter is ≤100mm, the split mold is divided into two equal parts vertically; when the model structure is horizontally plane symmetrical and the inner cavity diameter is ≤100mm, the split mold is divided into two equal parts horizontally.

[0051] Optionally, the split centrifuge tube and the split mold are provided with a split line, the split line is serrated or corrugated, and the width of the split line is 5-20 mm.

[0052] Among them, when the split line of the split centrifuge tube is serrated, the width of the split line is 5-20mm, and the split line of the split mold is corrugated, and the width of the split line is 5-20mm; when the split line of the split centrifuge tube is corrugated, the width of the split line is 5-20mm, and the split line of the split mold is serrated, and the width of the split line is 5-20mm.

[0053] Among them, the complex structure metal parts gel centrifugal molding device also includes a wireless temperature sensor, which is located on the inner wall of the centrifugal chamber and is used to monitor the slurry solidification condition.

[0054] The metal powder suspension slurry is composed of a water-based or non-aqueous gel system and metal powder, wherein the solid content of the metal powder is 45-65%, the remainder is the gel system, and the slurry viscosity is not higher than 5 Pa·s.

[0055] The centrifugation time is determined by the in-situ solidification time of the slurry, and the in-situ solidification time of the slurry is determined by the content of the added initiator and catalyst. The centrifugation time is generally 10-120 minutes.

[0056] Example 1

[0057] A method for using a gel centrifugal molding device for metal parts with complex structures, comprising the following steps:

[0058] S1, split centrifuge tubes are machined to be divided into two types, such as Figure 2 As shown; the target part design drawing is enlarged by 1.2 times according to the sintering shrinkage ratio, and a complex-shaped plastic model is prepared by 3D printing according to the enlarged target part design drawing, and the surface roughness is ≤3.0μm;

[0059] S2. Assemble the split centrifuge tube by fixing the ferrule; fix the complex-shaped plastic model in the assembled split centrifuge tube; when the model structure is an axisymmetric structure and the size is 100-200 mm, use silicone to divide the complex-shaped plastic model into four equal parts along the axis and form a single-cavity mold. After the silicone is cured, remove the centrifuge tube along the split line of the centrifuge tube, and remove the mold along the split line of the mold, take out the complex-shaped plastic model, and obtain the split mold, such as Figure 3 As shown;

[0060] The number of the split centrifuge tubes is 4 pairs, the material is stainless steel, the shape is cylindrical, and the capacity is 1500 mL;

[0061] The fixed ferrule in this embodiment is composed of 3-5 steel rings and steel bars, the steel rings are arranged vertically and equidistantly, and are fixed by steel bars to form an integral ferrule;

[0062] Wherein, when the split line of the split centrifuge tube is serrated, the width of the split line is 5-20 mm, and when the split line of the split mold is corrugated, the width of the split line is 5-20 mm;

[0063] When the split line of the split centrifuge tube is corrugated, the width of the split line is 5-20 mm; when the split line of the split mold is serrated, the width of the split line is 5-20 mm;

[0064] S3, such as Figure 1 As shown, the split mold 5 is assembled and sprayed with a release agent, and then placed in a split centrifuge tube 4. The centrifuge tube 4 with the mold is fixed on a desktop centrifuge 1 by a fixed sleeve 2. The titanium alloy powder suspension slurry 7 to which an initiator and a catalyst have been added and stirred evenly is injected into the split mold 5 in the centrifuge 1, and the centrifuge cover 3 is covered. The centrifugal speed is controlled to be 500-14000 rpm by the touch panel 6 for 30 minutes. After the centrifugation is completed, the split centrifuge tube 4 is taken out, the fixed sleeve 2 is removed, the centrifuge tube 4 is removed along the split line on the centrifuge tube, and then the mold 5 is removed along the split line on the mold to obtain a complete, high-precision complex-shaped metal part blank; the complex-structure metal part gel centrifugal molding device also includes a wireless temperature sensor, which is located on the inner wall of the centrifuge chamber and is used to monitor the slurry solidification condition.

[0065] S4, the final complex shape metal parts blank is formed Figure 4 As shown, after degreasing and sintering, high-precision, high-density metal parts with complex shapes are obtained.

[0066] The complex shape of the complex-shaped metal part prepared in this embodiment is an axisymmetric structure, the shrinkage coefficient is 1.167, the density is 99%, the yield rate is 97%, and the mold can be reused 100-500 times.

[0067] Example 2

[0068] A method for using a gel centrifugal molding device for metal parts with complex structures, comprising the following steps:

[0069] S1. The split centrifuge tube is divided into three parts by machining; the target part design drawing is enlarged by 1.3 times according to the sintering shrinkage ratio, and a complex-shaped photosensitive resin model is prepared by 3D printing according to the enlarged target part design drawing, with a surface roughness of ≤3.0μm;

[0070] S2. Assemble the split centrifuge tube by fixing the ferrule; fix the complex-shaped photosensitive resin model in the assembled split centrifuge tube; when the model structure is a vertical plane symmetrical structure and the inner cavity diameter is ≤100 mm, use silicone to vertically divide the complex-shaped photosensitive resin model into two equal parts and form a one-mold multi-cavity reverse mold, remove the centrifuge tube along the split line of the centrifuge tube after the silicone is cured, and remove the mold along the split line of the mold, take out the complex-shaped photosensitive resin model, and obtain the split mold;

[0071] The fixed ferrule in this embodiment is composed of 3-5 steel rings and steel bars, the steel rings are arranged vertically and equidistantly, and are fixed by steel bars to form an integral ferrule;

[0072] Wherein, when the split line of the split centrifuge tube is serrated, the width of the split line is 5-20 mm, and when the split line of the split mold is corrugated, the width of the split line is 5-20 mm;

[0073] When the split line of the split centrifuge tube is corrugated, the width of the split line is 5-20 mm; when the split line of the split mold is serrated, the width of the split line is 5-20 mm;

[0074] S3, such as Figure 1 As shown, the split mold 5 is assembled and sprayed with a release agent, and then placed in a split centrifuge tube 4. The centrifuge tube 4 with the mold is fixed on a desktop centrifuge 1 by a fixed sleeve 2. The stainless steel powder suspension slurry 7 to which an initiator and a catalyst have been added and stirred evenly is injected into the split mold 5 in the centrifuge 1, and the centrifuge cover 3 is covered. The centrifugation time is controlled to be 35 minutes through the touch panel 6. After the centrifugation is completed, the split centrifuge tube 4 is taken out, the fixed sleeve 2 is removed, the centrifuge tube 4 is removed along the split line on the centrifuge tube, and then the mold 5 is removed along the split line on the mold to obtain a complete, high-precision complex-shaped metal part blank; the complex-structure metal part gel centrifugal molding device also includes a wireless temperature sensor, which is located on the inner wall of the centrifuge chamber and is used to monitor the slurry solidification condition.

[0075] S4. After degreasing and sintering, the complex-shaped metal part blank is finally formed to obtain a high-precision, high-density complex-shaped metal part.

[0076] The complex shape of the complex-shaped metal parts prepared in this embodiment is a vertical plane symmetrical structure, the shrinkage coefficient is 1.170, the density is 99.5%, the yield rate is 98%, and the mold can be reused 200-600 times.

[0077] Example 3

[0078] A method for using a gel centrifugal molding device for metal parts with complex structures, comprising the following steps:

[0079] S1. The split centrifuge tube is machined to be divided into four equal parts; the target part design drawing is enlarged by 1.25 times according to the sintering shrinkage ratio, and a complex shape polyurethane model is prepared by 3D printing according to the enlarged target part design drawing, with a surface roughness of ≤3.0μm;

[0080] S2. Assemble the split centrifuge tube by fixing the ferrule; fix the complex-shaped polyurethane model in the assembled split centrifuge tube; when the model structure is a horizontal plane symmetrical structure and the inner cavity diameter is ≤100 mm, use silicone to horizontally divide the complex-shaped polyurethane model into two equal parts and form a one-mold multi-cavity reverse mold, remove the centrifuge tube along the split line of the centrifuge tube after the silicone is cured, and remove the mold along the split line of the mold, take out the complex-shaped polyurethane model, and obtain the split mold;

[0081] The fixed ferrule in this embodiment is composed of 3-5 steel rings and steel bars, the steel rings are arranged vertically and equidistantly, and are fixed by steel bars to form an integral ferrule;

[0082] Wherein, when the split line of the split centrifuge tube is serrated, the width of the split line is 5-20 mm, and when the split line of the split mold is corrugated, the width of the split line is 5-20 mm;

[0083] When the split line of the split centrifuge tube is corrugated, the width of the split line is 5-20 mm; when the split line of the split mold is serrated, the width of the split line is 5-20 mm;

[0084] S3, such as Figure 1 As shown, the split mold 5 is assembled and sprayed with a release agent, and then placed in a split centrifuge tube 4. The centrifuge tube 4 with the mold is fixed on a desktop centrifuge 1 by a fixed sleeve 2. The copper alloy powder suspension slurry 7 to which an initiator and a catalyst have been added and stirred evenly is injected into the split mold 5 in the centrifuge 1, and the centrifuge cover 3 is covered. The centrifugation time is controlled to be 30 minutes by a touch panel 6. After the centrifugation is completed, the split centrifuge tube 4 is taken out, the fixed sleeve 2 is removed, the centrifuge tube 4 is removed along the split line on the centrifuge tube, and then the mold 5 is removed along the split line on the mold to obtain a complete, high-precision complex-shaped metal part blank; the complex-structure metal part gel centrifugal molding device also includes a wireless temperature sensor, which is located on the inner wall of the centrifuge chamber and is used to monitor the slurry solidification condition.

[0085] S4. After degreasing and sintering, the complex-shaped metal part blank is finally formed to obtain a high-precision, high-density complex-shaped metal part.

[0086] The complex shape of the complex-shaped metal parts prepared in this embodiment is a horizontal plane symmetrical structure, the shrinkage coefficient is 1.169, the density is 99.3%, the yield rate is 99%, and the mold can be reused 200-600 times.

[0087] Compared with the prior art, the above technical solution has at least the following beneficial effects:

[0088] The above scheme, the utility model proposes a gel centrifugal molding device for complex structure metal parts, which can solve the technical problems of existing gel centrifugal molding metal parts such as difficulty in demolding, the mold cannot be reused, the low density of the prepared metal parts, and the uneven distribution of component properties, thereby reducing production costs and improving economic benefits.

[0089] The split mold adopted by the utility model ensures that the green billet has no deformation, damage, internal cracks and surface defects during the green billet removal process, avoids the situation where the green billet and the mold cannot be removed due to excessive adsorption, improves the reusability of the mold, the efficiency, yield rate and forming accuracy of the gel centrifugal molding of complex-shaped metal parts, and reduces the mold cost of the gel centrifugal molding of complex-shaped metal parts.

[0090] The split centrifuge tube adopted by the utility model ensures that the mold is not damaged during the process of the mold being removed from the centrifuge tube, and avoids the situation where the mold and the centrifuge tube cannot be removed due to excessive adsorption, thereby improving the operability of gel centrifugal molding demoulding of complex-shaped metal parts and reducing the application cost of the mold.

[0091] The split lines of the split centrifuge tube and the split mold adopted in the utility model are serrated or corrugated, so that the various split modules can be better meshed together when assembled, ensuring that there is no gap between the split centrifuge tube and the split mold after assembly, and avoiding technical defects in the organization and performance of the formed blank caused by the device structure.

[0092] The gel centrifugal molding device of the utility model has high design flexibility and simple operation. The split structure of the mold and the centrifuge tube can be designed according to the complexity of the target parts, thereby maximizing the forming quality and forming efficiency of complex structure metal parts. It has a wide range of applications and can provide a reliable method for forming complex structure metal parts of various sizes, which is conducive to large-scale industrial production.

[0093] The gel centrifugal molding device of the utility model has low requirements on the strength of the green body of the complex structure being formed, and the metal powder suspension slurry has high flexibility in configuration and a wide range of applications. It is not limited to the forming of metal parts, but is also suitable for the forming of ceramic parts, and has high forming efficiency, good quality and low cost.

[0094] In summary, compared with other traditional methods, the method of the utility model can provide a reliable method for forming metal parts with complex structures of various sizes through the split structural settings of each component in the device structure and other structural settings; it has high resource utilization, short process, high forming efficiency, yield rate and forming accuracy, which is conducive to large-scale industrial production and promotion and application.

[0095] It should be understood that the term "and / or" in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. A and B can be singular or plural. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship, but it may also indicate an "and / or" relationship. Please refer to the context for specific understanding.

[0096] In the present invention, "at least one" means one or more, and "more" means two or more. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, at least one of a, b, or c can mean: a, b, c, ab, ac, bc, or abc, where a, b, and c can be single or multiple.

[0097] It should be understood that in various embodiments of the present invention, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.

[0098] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A gel centrifugal molding device for complex structure metal parts, characterized in that: The complex structure metal parts gel centrifugal molding device comprises a desktop centrifuge, which comprises a centrifuge cover, a touch panel and a wireless temperature sensor. A split centrifuge tube is fixed in the desktop centrifuge by a fixed sleeve, and a split mold is arranged in the split centrifuge tube.

2. The complex structure metal parts gel centrifugal molding device according to claim 1 is characterized in that: The desktop centrifuge is equipped with a horizontal rotor with a rotation speed of 500-14000 rpm.

3. The complex structure metal parts gel centrifugal molding device according to claim 1 is characterized in that: The split centrifuge tube is split along the height direction by machining.

4. The complex structure metal parts gel centrifugal molding device according to claim 3 is characterized in that: The split centrifuge tube includes a left-right half-division type, a third-division type or a fourth-division type.

5. The complex structure metal parts gel centrifugal molding device according to claim 1 is characterized in that: The structure of the fixed ferrule is composed of 3-5 steel rings and steel bars. The steel rings are arranged vertically and equidistantly and are fixed by the steel bars to form an integral ferrule.

6. The complex structure metal parts gel centrifugal molding device according to claim 1 is characterized in that: The split mold is made by inverting a complex shape model, and the split method is determined by the structure and size of the model.

7. The complex structure metal parts gel centrifugal molding device according to claim 6 is characterized in that: The complex shape model is prepared by 3D printing according to the enlarged target part design drawing by 1.15-1.3 times according to the sintering shrinkage ratio, with a surface roughness of ≤3.0 μm, and the model material is plastic, photosensitive resin, polyurethane or metal.

8. The complex structure metal parts gel centrifugal molding device according to claim 6 is characterized in that: The split mold is designed into a horizontal or vertical split structure according to the shape characteristics of the complex shape model, and is designed into a single-cavity or multi-cavity mold according to the size of the split centrifuge tube and the complex shape model.

9. The complex structure metal parts gel centrifugal molding device according to claim 6, characterized in that: When the model structure is axisymmetric and the inner cavity diameter is 100-200mm, the split mold is divided into four equal parts along the axis; when the model structure is vertical plane symmetrical and the inner cavity diameter is ≤100mm, the split mold is divided into two equal parts vertically; when the model structure is horizontal plane symmetrical and the inner cavity diameter is ≤100mm, the split mold is divided into two equal parts horizontally.

10. The complex structure metal parts gel centrifugal molding device according to claim 1, characterized in that: The split centrifuge tube and the split mold are provided with split lines, which are sawtooth or corrugated, and have a width of 5-20 mm.

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