Method and system for composite additive manufacturing of layered heterogeneous parts

Abstract

The present invention provides a method and system for composite additive manufacturing of layered heterogeneous parts, comprising the following steps: a processing step: cold spraying a preset powder on a preset substrate; or ultrasonic additive consolidation of foil on a preset substrate; a cold spraying step: cold spraying a preset powder on the consolidated foil; an ultrasonic step: using ultrasonic additive consolidation of foil on the preset powder; an alternating execution step: alternately executing the cold spraying step and the ultrasonic step to form a layered heterogeneous part. The present invention can realize additive manufacturing of layered heterogeneous composite materials, and the obtained parts have high strength and good toughness.

Description

Technical Field

[0001] The present invention relates to the technical field of metal forming and manufacturing, and in particular, to a method and system for composite additive manufacturing of layered heterogeneous parts. In particular, it preferably relates to a method for composite additive manufacturing of layered heterogeneous parts by ultrasonic-cold spraying. Background Art

[0002] Layered heterogeneous composite is a way to achieve high performance of parts by utilizing the characteristics of different materials, including two main types: single metal layered heterogeneity and multi-metal composite. Parts with soft-hard layered composite can have strength close to that of the hard layer and plasticity close to that of the soft layer, achieving excellent strength-plasticity matching. At the same time, the soft-hard interface can prevent crack propagation and enhance the impact and fatigue properties of the material. These advantages enable layered heterogeneous parts to meet the needs of high-end industrial fields. Cold spraying and ultrasonic additive manufacturing are both means to manufacture layered heterogeneous parts.

[0003] Cold spray additive manufacturing technology is a type of metal 3D printing technology. Its principle is that powder particles impact the substrate under the drive of high-speed gas, and the powder undergoes severe plastic deformation and deposition. Cold spray is a low-temperature additive manufacturing technology, suitable for oxygen and heat-sensitive materials, and will not have a thermal effect on the substrate. The severe plastic deformation during the forming process makes it have higher strength and higher deposition efficiency. However, cold spraying has the problems of poor plasticity, large porosity and residual stress, and it is difficult to effectively combine when the strength of the powder and the substrate is high, making it difficult to be used in the manufacture of high-strength materials.

[0004] Ultrasonic additive technology is an advanced low-temperature additive technology. Its principle is to convert high-frequency electrical signals into high-frequency mechanical vibrations through transducers. The metal undergoes plastic deformation under the action of vibration and pressure, the oxide film between the interfaces is destroyed, and the close contact between the metals diffuses to form a metallurgical bond. During the ultrasonic additive process, the microstructure of the material can be improved to obtain higher strength. However, as the number of stacked layers increases, ultrasonic additive also has the problem of loose bonding.

[0005] The Chinese invention patent document with publication number CN114985778A discloses a layered heterogeneous steel and its arc additive manufacturing system and method. In order to solve the problem of realizing heterogeneous design and composition and organization regulation of complex structural parts, the present invention realizes arc additive manufacturing of layered heterogeneous material components under full-layer penetration heat control. Due to its high deposition efficiency, high density, simple process, low cost, and layered molding, it can be used as the preferred preparation process for constructing layered heterogeneous steel. The molding characteristics of arc additive manufacturing can realize the layered design of complex components; the full-layer penetration heat control unique to arc additive manufacturing can be used to control the microstructure-structure of different layers and improve the strong-tough comprehensive mechanical properties of the components.

[0006] With respect to the above-mentioned related technologies, the inventors believe that it is necessary to design a composite process method based on the problems existing in the existing processes so that the advantages of different processes can complement each other for manufacturing high-performance layered heterogeneous parts. Summary of the invention

[0007] In view of the defects in the prior art, the object of the present invention is to provide a method and system for composite additive manufacturing of layered heterogeneous parts.

[0008] A method for composite additive manufacturing of layered heterogeneous parts provided by the present invention comprises the following steps:

[0009] Processing steps: cold spraying a predetermined powder on a predetermined substrate; or ultrasonic additive consolidation of a foil on a predetermined substrate;

[0010] Cold spraying step: cold spraying a preset powder on the consolidated foil;

[0011] Ultrasonic step: using ultrasonic additive consolidation to consolidate foil on pre-set powder;

[0012] Alternating steps: Alternating cold spray steps with ultrasonic steps to form layered heterogeneous parts.

[0013] Preferably, in the processing step, the preset substrate includes an aluminum alloy substrate; the preset powder includes titanium powder; the aluminum alloy substrate is subjected to sandblasting to roughen the surface of the aluminum alloy substrate;

[0014] In the ultrasonic step, the foil material includes an aluminum alloy foil.

[0015] Preferably, the method further comprises a machining step: machining the layered heterogeneous part so that the size of the layered heterogeneous part meets the requirements.

[0016] Preferably, in the processing step,

[0017] The preset substrate includes an anti-collision beam; the foil material includes 2219-O aluminum alloy foil; the plate is stamped into the required anti-collision beam; the anti-collision beam is solid-solution treated at 535° C. for 40 minutes, quenched to room temperature, and aged at 175° C. for 10 hours;

[0018] The 2219-O aluminum alloy foil was consolidated on the surface of the anti-collision beam by ultrasonic additive, with a consolidation amplitude of 20 μm, a consolidation pressure of 0.25 MPa, and an ultrasonic frequency of 20 kHz;

[0019] In the cold spraying step, the preset powder includes 2219-T6 powder; 2219-T6 powder is cold sprayed on the surface of the aluminum alloy foil, the carrier gas temperature is 350° C., the carrier gas pressure is 2.8 MPa, and the nozzle distance is 30 mm.

[0020] Preferably, in the processing step,

[0021] Titanium powder was cold sprayed on the aluminum alloy surface according to the cross section of the reinforcement rib, with the carrier gas temperature of 700°C, the carrier gas pressure of 5MPa, and the nozzle distance of 30mm;

[0022] In the ultrasonic step, the foil includes 2219-T6 aluminum foil; the 2219-T6 aluminum foil is consolidated on the titanium powder coating according to the cross-section of the reinforcement rib using ultrasonic additive, the consolidation amplitude is 30 μm, the consolidation pressure is 0.3 MPa, and the ultrasonic frequency is 20 kHz.

[0023] A system for composite additive manufacturing of layered heterogeneous parts provided by the present invention includes the following modules:

[0024] Processing module: cold spraying a preset powder on a preset substrate; or ultrasonic additive consolidation of foil on a preset substrate;

[0025] Cold spray module: cold spraying preset powder on the consolidated foil;

[0026] Ultrasonic module: Use ultrasonic additive to consolidate foil on preset powder;

[0027] Alternating execution modules: Alternating execution of cold spray module and ultrasonic module to form layered heterogeneous parts.

[0028] Preferably, in the processing module, the preset substrate includes an aluminum alloy substrate; the preset powder includes titanium powder; the aluminum alloy substrate is subjected to sandblasting to roughen the surface of the aluminum alloy substrate;

[0029] In the ultrasonic module, the foil material includes aluminum alloy foil.

[0030] Preferably, the system further comprises a machining module for machining the layered heterogeneous parts so that the dimensions of the layered heterogeneous parts meet the requirements.

[0031] Preferably, in the processing module,

[0032] The preset substrate includes an anti-collision beam; the foil material includes 2219-O aluminum alloy foil; the plate is stamped into the required anti-collision beam; the anti-collision beam is solid-solution treated at 535° C. for 40 minutes, quenched to room temperature, and aged at 175° C. for 10 hours;

[0033] The 2219-O aluminum alloy foil was consolidated on the surface of the anti-collision beam by ultrasonic additive, with a consolidation amplitude of 20 μm, a consolidation pressure of 0.25 MPa, and an ultrasonic frequency of 20 kHz;

[0034] In the cold spray module, the preset powder includes 2219-T6 powder; 2219-T6 powder is cold sprayed on the surface of the aluminum alloy foil, the carrier gas temperature is 350° C., the carrier gas pressure is 2.8 MPa, and the nozzle distance is 30 mm.

[0035] Preferably, in the processing module,

[0036] Titanium powder was cold sprayed on the aluminum alloy surface according to the cross section of the reinforcement rib, with the carrier gas temperature of 700°C, the carrier gas pressure of 5MPa, and the nozzle distance of 30mm;

[0037] In the ultrasonic module, the foil material includes 2219-T6 aluminum foil; the 2219-T6 aluminum foil is consolidated on the titanium powder coating according to the cross-section of the reinforcement rib using ultrasonic additive, the consolidation amplitude is 30 μm, the consolidation pressure is 0.3 MPa, and the ultrasonic frequency is 20 kHz.

[0038] Compared with the prior art, the present invention has the following beneficial effects:

[0039] 1. The present invention can realize additive manufacturing of layered heterogeneous composite materials, and the obtained parts have high strength and good toughness;

[0040] 2. The present invention is based on cold spraying technology, which has high material addition efficiency. The material is strengthened during the spraying process to obtain higher strength;

[0041] 3. The present invention introduces ultrasonic additive technology as an auxiliary to solve the problems of difficult cold spray adhesion, large porosity and large residual stress. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:

[0043] Figure 1 It is a schematic diagram of the technical route of the present invention;

[0044] Figure 2 Schematic diagram of making a W-shaped anti-collision beam sample for the present invention;

[0045] Figure 3 This is a schematic diagram of manufacturing a thin-walled part with reinforcing ribs according to the present invention. DETAILED DESCRIPTION

[0046] The present invention is described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but are not intended to limit the present invention in any form. It should be noted that, for those of ordinary skill in the art, several changes and improvements can also be made without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0047] Embodiment 1 of the present invention discloses a method for ultrasonic-cold spraying additive manufacturing of layered heterogeneous composite materials. The additive manufacturing process comprises the following steps:

[0048] Processing steps: cold spraying of a predetermined powder onto a predetermined substrate; or ultrasonic additive consolidation of a foil onto a predetermined substrate.

[0049] Cold spraying step: cold spraying the preset powder on the consolidated foil.

[0050] Ultrasonic step: Additive consolidation of the foil using ultrasound on the pre-set powder.

[0051] Alternating steps: Alternating cold spray steps with ultrasonic steps to form layered heterogeneous parts.

[0052] Machining step: The additively manufactured parts are machined to meet the required dimensions.

[0053] The forming process is as follows:

[0054] S1. Cold spray a layer of titanium powder on an aluminum alloy substrate.

[0055] S2.Use ultrasonic additive technology to consolidate a layer of aluminum alloy foil on titanium powder.

[0056] S3. Repeat the above process to form an aluminum-titanium layered heterogeneous composite material until it is close to the shape of the target part.

[0057] S4. Machining the additively manufactured parts to meet the required dimensions.

[0058] The powder used in the cold spraying process in S1 includes titanium powder, but the present invention can also use other material powders with higher strength.

[0059] The aluminum foil used in the ultrasonic additive process in S2 includes 2219 aluminum alloy, but the present invention can also use other materials that are softer than the materials used in the cold spraying process.

[0060] In S3, cold spraying and ultrasonic additive manufacturing are performed alternately until the shape of the part is roughly the same as the required part.

[0061] The present invention realizes near-net-shape manufacturing of parts by simultaneously using ultrasonic and cold spraying methods. By adding an ultrasonic additive manufacturing process, the residual stress of the cold spray coating of the previous process can be removed and the density can be increased, and the next cold spraying process can still be carried out on a relatively soft substrate, thereby enhancing the interface bonding strength. The obtained parts are composed of layered heterogeneous composite materials and have high strength and high toughness.

[0062] The purpose of the present invention is to overcome the limitations of the above-mentioned prior art and applications, and to provide a method for manufacturing layered heterogeneous parts by ultrasonic-cold spraying composite additives. In the forming process, titanium powder is first cold sprayed on an aluminum alloy substrate, and then aluminum foil is consolidated on the titanium coating by ultrasonic additives. The above process is repeated until it is roughly the same as the shape of the part, and a titanium-aluminum layered heterogeneous composite material is formed, and the desired part is obtained by machining. Cold spraying has high deposition efficiency and fast manufacturing speed. Severe plastic deformation occurs during the process to obtain a higher strength material. The ultrasonic additive process relieves the internal stress and densifies the existing titanium coating. The softer aluminum foil serves as the substrate for the subsequent cold spraying process. The interface is tightly bonded, and the layered heterogeneous composite of soft and hard materials has the characteristics of high strength and high toughness.

[0063] The present invention realizes the manufacture of layered heterogeneous parts through an ultrasonic-cold spraying composite method. The obtained parts have the advantages of high density, high strength, high toughness, etc., and can be used for the reinforcement and additive manufacturing of thin plate parts.

[0064] like Figure 1 As shown, the process route designed for parts with crossed high ribs according to the present invention is described by taking aluminum alloy 2219 and titanium powder as examples.

[0065] Firstly, 2219 aluminum alloy was used as the substrate and sandblasted to roughen its surface.

[0066] A layer of titanium powder is cold sprayed on the surface of aluminum alloy.

[0067] A layer of 2219 aluminum foil is consolidated on the titanium powder coating using ultrasonic additive manufacturing.

[0068] The process of cold spraying aluminum alloy and ultrasonic consolidation of titanium was repeated to obtain a material with soft-hard layered heterogeneity.

[0069] The obtained parts are machined.

[0070] Embodiment 2 of the present invention discloses a method for manufacturing layered heterogeneous composite materials by ultrasonic-cold spraying additive manufacturing, such as Figure 2 As shown, the parts obtained by strengthening the W-shaped anti-collision beam of the present invention.

[0071] The 2219-O sheet is punched into the required W-shaped anti-collision beam.

[0072] The anti-collision beam was solution treated at 535°C for 40 minutes, quenched to room temperature, and aged at 175°C for 10 hours to reach the T6 state. T6 is the peak aging state of aluminum alloy, and only some grades of aluminum alloy have this state (such as 2219, 2024).

[0073] A layer of 2219-O aluminum alloy foil with a thickness of 200 μm was consolidated on the surface of the anti-collision beam part by ultrasonic additive manufacturing. The consolidation amplitude was 20 μm, the consolidation pressure was 0.25 MPa, and the ultrasonic frequency was 20 kHz.

[0074] A layer of 2219-T6 powder with a particle size of 75 μm was cold sprayed on the surface of the O-state aluminum alloy. The carrier gas temperature was 350°C, the carrier gas pressure was 2.8 MPa, and the nozzle distance was 30 mm.

[0075] The ultrasonic additive consolidation and cold spraying processes are repeated until the layered heterogeneous material reaches the desired thickness.

[0076] Machining the parts.

[0077] The third embodiment of the present invention also discloses a method for manufacturing layered heterogeneous composite materials by ultrasonic-cold spraying additive manufacturing. Figure 3 As shown, a ribbed thin-walled part obtained by additive manufacturing according to the present invention is shown.

[0078] Firstly, 2219-T6 aluminum alloy was used as the substrate and sandblasted to roughen its surface.

[0079] A layer of Ti-01 powder with a particle size of 60 μm was cold sprayed on the surface of the aluminum alloy according to the cross section of the reinforcement rib, the carrier gas temperature was 700° C., the carrier gas pressure was 5 MPa, and the nozzle distance was 30 mm.

[0080] Ultrasonic additive manufacturing was used to consolidate a layer of 2219-T6 aluminum foil with a thickness of 200 μm on the titanium powder coating according to the cross-section of the reinforcement rib. The consolidation amplitude was 30 μm, the consolidation pressure was 0.3 MPa, and the ultrasonic frequency was 20 kHz.

[0081] The process of cold spraying aluminum alloy and ultrasonic consolidation of titanium is repeated to obtain a material with soft-hard layered heterogeneity until the geometric size of the required part is approached.

[0082] The obtained part is machined to remove excess material and obtain the final part.

[0083] The present invention also provides a system for composite additive manufacturing of layered heterogeneous parts. The system for composite additive manufacturing of layered heterogeneous parts can be realized by executing the process steps of the method for composite additive manufacturing of layered heterogeneous parts, that is, those skilled in the art can understand the method for composite additive manufacturing of layered heterogeneous parts as a preferred embodiment of the system for composite additive manufacturing of layered heterogeneous parts.

[0084] The system includes the following modules:

[0085] Processing module: cold spraying of a preset powder on a preset substrate; or ultrasonic additive consolidation of foil on a preset substrate.

[0086] Cold Spray Module: Cold spraying of pre-set powders onto consolidated foil.

[0087] Ultrasonic module: Use ultrasonic additive consolidation to consolidate foil on pre-set powder.

[0088] Alternating execution modules: Alternating execution of cold spray module and ultrasonic module to form layered heterogeneous parts.

[0089] Machining module: Machining the layered heterogeneous parts to make the dimensions of the layered heterogeneous parts meet the requirements.

[0090] In one embodiment, in the processing module, the preset substrate includes an aluminum alloy substrate; the preset powder includes titanium powder; and the aluminum alloy substrate is sandblasted to roughen the surface of the aluminum alloy substrate.

[0091] In the ultrasonic module, the foil material includes aluminum alloy foil.

[0092] In one embodiment, in the processing module, the preset substrate includes an anti-collision beam; the foil material includes 2219-O aluminum alloy foil; the plate is stamped into the required anti-collision beam; the anti-collision beam is solution treated at 535°C for 40 minutes, quenched to room temperature, and aged at 175°C for 10 hours to make the anti-collision beam reach T6 state.

[0093] The 2219-O aluminum alloy foil was consolidated on the surface of the anti-collision beam by ultrasonic additive manufacturing, with a consolidation amplitude of 20 μm, a consolidation pressure of 0.25 MPa, and an ultrasonic frequency of 20 kHz.

[0094] In the cold spray module, the preset powder includes 2219-T6 powder, and the 2219-T6 powder is cold sprayed on the surface of the aluminum alloy foil. The carrier gas temperature is 350° C., the carrier gas pressure is 2.8 MPa, and the nozzle distance is 30 mm.

[0095] In one embodiment, in the processing module, the predetermined substrate includes an aluminum alloy substrate; and the predetermined powder includes titanium powder.

[0096] The aluminum alloy substrate is subjected to sandblasting treatment to roughen the surface of the aluminum alloy substrate.

[0097] Titanium powder was cold sprayed on the aluminum alloy surface according to the cross section of the reinforcement rib, with a carrier gas temperature of 700°C, a carrier gas pressure of 5 MPa, and a nozzle distance of 30 mm.

[0098] In the ultrasonic module, the foil material includes T6 aluminum foil; the T6 aluminum foil is consolidated on the titanium powder coating according to the cross section of the reinforcing rib by ultrasonic additive, the consolidation amplitude is 30 μm, the consolidation pressure is 0.3 MPa, and the ultrasonic frequency is 20 kHz.

[0099] Those skilled in the art know that, in addition to realizing the system and its various devices, modules, and units provided by the present invention in a purely computer-readable program code, it is entirely possible to realize the same functions in the form of logic gates, switches, application-specific integrated circuits, programmable logic controllers, and embedded microcontrollers by logically programming the method steps. Therefore, the system and its various devices, modules, and units provided by the present invention can be considered as a hardware component, and the devices, modules, and units included therein for realizing various functions can also be regarded as structures within the hardware component; the devices, modules, and units for realizing various functions can also be regarded as both software modules for realizing the method and structures within the hardware component.

[0100] The above describes the specific embodiments of the present invention. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which does not affect the essence of the present invention. In the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other arbitrarily.

Claims

1. A method for composite additive manufacturing of layered heterogeneous parts, characterized in that: The steps include: Processing steps: Ultrasonic additive consolidation of foil on a pre-determined substrate; Cold spraying step: cold spraying a preset powder on the consolidated foil; Ultrasonic step: using ultrasonic additive consolidation to consolidate foil on pre-set powder; Alternating steps: Alternating cold spraying steps and ultrasonic steps to form layered heterogeneous parts; In the processing step, the preset substrate includes an anti-collision beam; the foil includes 2219-O aluminum alloy foil; the plate is stamped into the required anti-collision beam; the anti-collision beam is solution treated at 535° C. for 40 minutes, quenched to room temperature, and aged at 175° C. for 10 hours; The 2219-O aluminum alloy foil was consolidated on the surface of the anti-collision beam by ultrasonic additive, with a consolidation amplitude of 20 μm, a consolidation pressure of 0.25 MPa, and an ultrasonic frequency of 20 kHz; In the cold spraying step, the preset powder includes 2219-T6 powder; 2219-T6 powder is cold sprayed on the surface of the aluminum alloy foil, the carrier gas temperature is 350° C., the carrier gas pressure is 2.8 MPa, and the nozzle distance is 30 mm.

2. A method for composite additive manufacturing of layered heterogeneous parts, characterized in that: The steps include: Processing steps: cold spraying a predetermined powder on a predetermined substrate; Cold spraying step: cold spraying a preset powder on the consolidated foil; Ultrasonic step: using ultrasonic additive consolidation to consolidate foil on pre-set powder; Alternating steps: Alternating cold spraying steps and ultrasonic steps to form layered heterogeneous parts; In the processing step, the preset substrate includes an aluminum alloy substrate; the preset powder includes titanium powder; the aluminum alloy substrate is subjected to sandblasting to roughen the surface of the aluminum alloy substrate; In the ultrasonic step, the foil material comprises an aluminum alloy foil; In the treatment step, titanium powder is cold sprayed on the surface of the aluminum alloy substrate according to the cross section of the reinforcing rib, the carrier gas temperature is 700° C., the carrier gas pressure is 5 MPa, and the nozzle distance is 30 mm; In the ultrasonic step, the foil includes 2219-T6 aluminum foil; the 2219-T6 aluminum foil is consolidated on the titanium powder coating according to the cross-section of the reinforcement rib using ultrasonic additive, the consolidation amplitude is 30 μm, the consolidation pressure is 0.3 MPa, and the ultrasonic frequency is 20 kHz.

3. The method for composite additive manufacturing of layered heterogeneous parts according to claim 1 or 2, characterized in that: The method also includes a machining step: machining the layered heterogeneous part to make the size of the layered heterogeneous part meet the requirements.

4. A system for composite additive manufacturing of layered heterogeneous parts, characterized in that: Includes the following modules: Processing module: Ultrasonic additive consolidation of foil on a preset substrate; Cold spray module: cold spraying preset powder on the consolidated foil; Ultrasonic module: Use ultrasonic additive to consolidate foil on preset powder; Alternating execution modules: Alternating execution of cold spray module and ultrasonic module to form layered heterogeneous parts; In the processing module, the preset substrate includes an anti-collision beam; the foil material includes 2219-O aluminum alloy foil; the plate is stamped into the required anti-collision beam; the anti-collision beam is solution treated at 535° C. for 40 minutes, quenched to room temperature, and aged at 175° C. for 10 hours; The 2219-O aluminum alloy foil was consolidated on the surface of the anti-collision beam by ultrasonic additive, with a consolidation amplitude of 20 μm, a consolidation pressure of 0.25 MPa, and an ultrasonic frequency of 20 kHz; In the cold spray module, the preset powder includes 2219-T6 powder; 2219-T6 powder is cold sprayed on the surface of the aluminum alloy foil, the carrier gas temperature is 350° C., the carrier gas pressure is 2.8 MPa, and the nozzle distance is 30 mm.

5. A system for composite additive manufacturing of layered heterogeneous parts, characterized in that: Includes the following modules: Processing module: cold spraying a preset powder on a preset substrate; Cold spray module: cold spraying preset powder on the consolidated foil; Ultrasonic module: Use ultrasonic additive to consolidate foil on preset powder; Alternating execution modules: Alternating execution of cold spray module and ultrasonic module to form layered heterogeneous parts; In the processing module, the preset substrate includes an aluminum alloy substrate; the preset powder includes titanium powder; the aluminum alloy substrate is subjected to sandblasting to roughen the surface of the aluminum alloy substrate; In the ultrasonic module, the foil material comprises an aluminum alloy foil; In the processing module, titanium powder is cold sprayed on the surface of the aluminum alloy substrate according to the cross section of the reinforcing rib, the carrier gas temperature is 700°C, the carrier gas pressure is 5MPa, and the nozzle distance is 30mm; In the ultrasonic module, the foil material includes 2219-T6 aluminum foil; the 2219-T6 aluminum foil is consolidated on the titanium powder coating according to the cross-section of the reinforcement rib using ultrasonic additive, the consolidation amplitude is 30 μm, the consolidation pressure is 0.3 MPa, and the ultrasonic frequency is 20 kHz.

6. The system for composite additive manufacturing of layered heterogeneous parts according to claim 4 or 5, characterized in that: The system also includes a machining module which is used for machining the layered heterogeneous parts so that the dimensions of the layered heterogeneous parts meet the requirements.

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