CN113560596B - Method for manufacturing metal closed structure - Google Patents
Method for manufacturing metal closed structure Download PDFInfo
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- CN113560596B CN113560596B CN202110594258.9A CN202110594258A CN113560596B CN 113560596 B CN113560596 B CN 113560596B CN 202110594258 A CN202110594258 A CN 202110594258A CN 113560596 B CN113560596 B CN 113560596B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/20—Direct sintering or melting
- B22F10/28—Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y10/00—Processes of additive manufacturing
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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Abstract
The embodiment of the invention discloses a manufacturing method of a metal closed structure, which comprises the following steps: step 101: obtaining the structural characteristics of the metal closed structure; step 102: carrying out module division on the metal closed structure based on the structural characteristics; step 103: stacking to form a body region through an electron beam fuse process; step 104: forming a first filling layer on one end surface of the body region through an electron beam fuse process; step 105: converting the posture of the body region, and forming a second filling layer on the other end face of the body region through an electron beam fuse process; step 106: alternately executing step 104 to step 105 until a closed zone provided corresponding to the closed processing zone is formed on the end face of the main body zone; step 107: and filling the filling part to prepare and obtain the metal closed structure. The manufacturing method of the metal closed structure can reduce the waste of raw materials, and meanwhile, the metal closed structure is formed in the preparation process without welding, so that the mechanical strength of the metal closed structure can be improved, and the product quality is guaranteed.
Description
Technical Field
The invention relates to the technical field of metal processing, in particular to a manufacturing method of a metal closed structure.
Background
E-beam fuse deposition rapid manufacturing technology is an emerging additive manufacturing technology that has evolved in recent years. As with other rapid prototyping techniques, it is necessary to layer a three-dimensional CAD model of a part and generate a machining path. And melting and feeding the metal wire material by using a high-energy electron beam as a heat source, stacking layer by layer according to a preset path, and forming metallurgical bonding with the previous layer until a compact metal part is formed. The technology has the characteristics of high forming speed, high degree of freedom of part design, good protection effect, high material utilization rate, high energy conversion rate and the like, and is suitable for forming, manufacturing and structure repairing of large and medium-sized active metal parts such as titanium alloy, aluminum alloy and the like and refractory alloy parts.
In solid freeform additive manufacturing, there are certain difficulties in facing parts with frame structures and closed structures due to direct forming. The current mainstream forming methods are mainly divided into two types.
The first method is as follows: and (3) locally increasing the deposition and filling of metal on the frame or the closed structure, and obtaining the required part structure through later machining.
The second method is as follows: the complete frame or the closed structure is decomposed in advance, each part of the component is printed by additive manufacturing, and the combined structure is welded after machining, so that the required frame structure, the closed structure and the like are obtained.
In the first forming mode, the mode of obtaining the frame structure and the closed structure by the method of filling the cavity through additive manufacturing needs to consume more metal raw materials, so that the cost of the raw materials is increased, and the time cost is increased. More cutters and processing time are needed for later mechanical processing. The cost of additive manufacturing such parts is significantly increased, making competitiveness less.
In the second molding mode, the overall process of the mode of obtaining parts of the frame structure and the closed structure in a later-stage welding combination mode is relatively complex. The welding has higher requirements on the assembly quality of parts, and the quality and the performance of the welding seam have certain influence on the original structure. For parts with complex structures or large welding groove thickness, the welding process is greatly limited. The welding combination method has fewer parts and has no cost advantage compared with the traditional processing method.
Disclosure of Invention
The invention aims to provide a manufacturing method of a metal closed structure, which can reduce the waste of raw materials, does not need welding when preparing the metal closed structure, can improve the mechanical strength of the metal closed structure and ensures the product quality.
In order to achieve the above object, there is provided a method of manufacturing a metal enclosure structure according to the present invention, including:
step 101: obtaining the structural characteristics of the metal closed structure;
step 102: performing module division on the metal closed structure based on the structural characteristics to obtain a main body processing area, at least two closed processing areas and a filling processing area;
step 103: stacking and forming a body region corresponding to the body processing region through an electron beam fuse process;
step 104: forming a first filling layer on one end surface of the body region through an electron beam fuse process;
step 105: converting the posture of the body region, and forming a second filling layer on the other end face of the body region through an electron beam fuse process;
step 106: alternately executing steps 104 to 105 until a closed zone provided corresponding to the closed machining zone is formed on the end face of the body zone;
step 107: and arranging a filling part corresponding to the filling processing area between two adjacent closed areas to prepare and obtain the metal closed structure.
Preferably, the number of closed processing zones is equal to the number of free ends of the main body processing zone.
Preferably, the step 104 specifically includes:
and adjusting the posture of the main body processing area to enable the first end face of the main body processing area to be parallel and horizontally arranged, and forming a first filling layer on the first end face through an electron beam fuse process.
Preferably, the step 105 specifically includes:
and adjusting the posture of the main body processing area again to enable the second end face of the main body processing area to be parallel and horizontally arranged, and forming a second filling layer on the second end face through an electron beam fuse process.
Preferably, the step 107 specifically includes:
and adjusting the posture of the main body processing area again, and arranging a filling part corresponding to the filling processing area between every two adjacent closed areas through an electron beam fuse process to prepare and obtain the metal closed structure.
Has the beneficial effects that: the invention provides a manufacturing method of a metal closed structure, which comprises the steps of firstly carrying out module division on the metal closed structure based on the shape of the metal closed structure in the manufacturing process of the metal closed structure, dividing a main body processing area, at least two closed processing areas and a filling processing area, then processing and preparing the main body area corresponding to the main body processing area through an electron beam fuse process, further processing and forming closed areas corresponding to the closed processing areas on different end surfaces of the main body area alternately, and finally filling parts corresponding to the filling processing areas between the closed areas, so that the metal closed structure can be manufactured and formed.
Drawings
Fig. 1 is a flow chart illustrating steps of a method for fabricating a metal enclosed structure according to some embodiments of the present invention.
Fig. 2 is a diagram of the processing steps of a metal enclosure structure according to one embodiment of the present invention.
Description of reference numerals:
1 a main body processing area; 2 sealing processing area, 3 filling processing area, 4 main body area, 5 first filling layer, 6 second filling layer, 7 sealing area and 8 filling part.
Detailed Description
The technical scheme of the invention is described in detail in the following with reference to the accompanying drawings.
Fig. 1 is a flow chart illustrating steps of a method for fabricating a metal enclosed structure according to some embodiments of the present invention. Fig. 2 is a process diagram of a metal enclosure structure according to an embodiment of the present invention.
As shown in fig. 1, according to an aspect of the present invention, there is provided a method of manufacturing a metal enclosed structure, including: the method comprises the following steps:
step 101: obtaining structural characteristics of the metal closed structure;
step 102: performing module division on the metal closed structure based on the structural characteristics to obtain a main body processing area, at least two closed processing areas and a filling processing area;
step 103: stacking and forming a body region corresponding to the body processing region by an electron beam fuse process;
step 104: forming a first filling layer on one end surface of the body region through an electron beam fuse process;
step 105: converting the posture of the body region, and forming a second filling layer on the other end face of the body region through an electron beam fuse process;
step 106: alternately executing steps 104 to 105 until a closed zone disposed corresponding to the closed processing zone is formed on the end face of the body zone;
step 107: and arranging a filling part corresponding to the filling processing area between two adjacent closed areas to prepare and obtain the metal closed structure.
The invention provides a manufacturing method of a metal closed structure, which comprises the steps of firstly dividing the metal closed structure into modules based on the shape of the metal closed structure in the manufacturing process of the metal closed structure, dividing a main body processing area, at least two closed processing areas and a filling processing area, then processing and preparing the main body area corresponding to the main body processing area through an electron beam fuse process, further processing and forming closed areas corresponding to the closed processing areas on different end surfaces of the main body area alternately, and finally filling parts corresponding to the filling processing areas between the closed areas, so that the metal closed structure can be prepared and formed.
According to the manufacturing method of the metal closed structure, the frame structure and the closed structure can be formed through the change of the forming posture, the allowance of later-stage machining is reduced, the cost is saved, and the range of parts which can be formed by an electron beam fuse wire is expanded; the two faces of the closed part which need to be closed are alternately formed, so that component deviation caused by deposition of metal vapor with lower temperature on one side can be avoided, and the defect that sharp corners are easily formed at the joint can be reduced.
As shown in fig. 2, in which the number of the closed processing regions 2 is two, the step of preparing the metal closed structure includes: step 101: obtaining the structural characteristics of the metal closed structure; step 102: performing module division on the metal closed structure based on the structural characteristics to obtain a main body processing area 1, at least two closed processing areas 2 and a filling processing area 3; step 103: forming a body region 4 corresponding to the body processing region 1 by stacking through an electron beam fuse process; step 104: forming a first filling layer 5 on one end surface of the body region 4 by an electron beam fuse process; step 105: converting the posture of the body region 4, and forming a second filling layer 6 on the other end face of the body region 4 through an electron beam fuse process; step 106: alternately executing steps 104 to 105 until a closed zone 7 provided corresponding to the closed processing zone 2 is formed on the end face of the main body zone 4; step 107: and a filling part 8 corresponding to the filling processing area 3 is arranged between two adjacent closed areas 7, so that the metal closed structure is prepared. Further, the number of closed processing zones 2 is equal to the number of free ends of the main body processing zone 1.
Further, step 104 specifically includes:
and adjusting the posture of the main body processing area to enable the first end face of the main body processing area to be parallel and horizontally arranged, and forming a first filling layer on the first end face through an electron beam fuse process.
In this embodiment, a specific step of step 104 is further provided, in which the posture of the main body processing area is adjusted so that the first end surface of the main body processing area is parallel, so as to ensure the stability and accuracy of the preparation of the first filling layer, and further ensure the accuracy of the product.
Further, step 105 specifically includes:
and adjusting the posture of the main body processing area again to enable the second end face of the main body processing area to be parallel and horizontally arranged, and forming a second filling layer on the second end face through an electron beam fuse process.
In this embodiment, a specific step of step 104 is further provided, in which the second end face of the main body processing region is made parallel by adjusting the posture of the main body processing region, so that the stability and accuracy of the preparation of the second filling layer can be ensured, and the accuracy of the product can be further ensured.
Further, step 107 specifically includes:
and adjusting the posture of the main body processing area again, and arranging a filling part corresponding to the filling processing area between two adjacent closed areas through an electron beam fuse process to prepare and obtain the metal closed structure.
In this embodiment, a specific step 107 is further provided, in which a filling portion corresponding to the filling processing region is also disposed between two adjacent sealing regions through an electron beam fuse process, so as to prepare and obtain a metal sealing structure, which can ensure the strength of the filling portion, ensure the consistency of the metal sealing structure, and improve the product quality.
Example 1
As shown in fig. 1, according to an aspect of the present invention, there is provided a method of manufacturing a metal enclosed structure, including: the method comprises the following steps:
step 101: obtaining the structural characteristics of the metal closed structure;
step 102: performing module division on the metal closed structure based on the structural characteristics to obtain a main body processing area, at least two closed processing areas and a filling processing area;
step 103: stacking and forming a body region corresponding to the body processing region by an electron beam fuse process;
step 104: forming a first filling layer on one end surface of the body region through an electron beam fuse process;
step 105: converting the posture of the body region, and forming a second filling layer on the other end face of the body region through an electron beam fuse process;
step 106: alternately executing steps 104 to 105 until a closed zone disposed corresponding to the closed processing zone is formed on the end face of the body zone;
step 107: and arranging a filling part corresponding to the filling processing area between two adjacent closed areas to prepare and obtain the metal closed structure.
Further, the number of closed processing zones is equal to the number of free ends of the main body processing zone.
Further, step 104 specifically includes:
and adjusting the posture of the main body processing area to enable the first end face of the main body processing area to be parallel and horizontally arranged, and forming a first filling layer on the first end face through an electron beam fuse process.
Further, step 105 specifically includes:
and adjusting the posture of the main body processing area again to enable the second end face of the main body processing area to be parallel and horizontally arranged, and forming a second filling layer on the second end face through an electron beam fuse process.
Further, step 107 specifically includes:
and adjusting the posture of the main body processing area again, and arranging a filling part corresponding to the filling processing area between two adjacent closed areas through an electron beam fuse process to prepare and obtain the metal closed structure. Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that various changes, modifications and substitutions can be made without departing from the spirit and scope of the invention as defined by the appended claims. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. A method of manufacturing a metal enclosure, comprising:
step 101: obtaining the structural characteristics of the metal closed structure;
step 102: performing module division on the metal closed structure based on the structural characteristics to obtain a main body processing area, a closed processing area and a filling processing area, wherein the number of the closed processing areas is at least two;
step 103: stacking and forming a body region corresponding to the body processing region through an electron beam fuse process;
step 104: converting the posture of the body region, and forming a first filling layer on one end face of the body region through an electron beam fuse process;
step 105: converting the posture of the body region, and forming a second filling layer on the other end face of the body region through an electron beam fuse process;
step 106: alternately executing steps 104 to 105 until a closed zone disposed corresponding to the closed processing zone is formed on the end face of the body zone;
step 107: and (3) arranging a filling part corresponding to the filling processing area between two adjacent sealing areas through an electron beam fuse process to prepare and obtain the metal sealing structure.
2. A method of manufacturing a metal enclosure structure according to claim 1, wherein the number of enclosed processing zones is equal to the number of free ends of the body processing zone.
3. The method for manufacturing a metal sealing structure according to claim 1, wherein the step 104 specifically comprises:
and adjusting the posture of the main body region to enable the first end face of the main body region to be parallel and horizontally arranged, and forming a first filling layer on the first end face through an electron beam fuse process.
4. The method for manufacturing a metal closed structure according to claim 3, wherein the step 105 specifically comprises:
and adjusting the posture of the main body region again to enable the second end face of the main body region to be parallel and horizontally arranged, and forming a second filling layer on the second end face through an electron beam fuse process.
5. The method for manufacturing a metal enclosure structure according to claim 3, wherein the step 107 specifically comprises:
and adjusting the posture of the main body region again, and arranging a filling part corresponding to the filling processing region between two adjacent sealing regions through an electron beam fuse process to prepare and obtain the metal sealing structure.
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