CN111347039A - Additive manufacturing method for short line segment structural features - Google Patents
Additive manufacturing method for short line segment structural features Download PDFInfo
- Publication number
- CN111347039A CN111347039A CN201911262481.2A CN201911262481A CN111347039A CN 111347039 A CN111347039 A CN 111347039A CN 201911262481 A CN201911262481 A CN 201911262481A CN 111347039 A CN111347039 A CN 111347039A
- Authority
- CN
- China
- Prior art keywords
- line segment
- short
- short line
- forming
- structural feature
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- 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
-
- 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]
-
- 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
- B22F10/30—Process control
- B22F10/32—Process control of the atmosphere, e.g. composition or pressure in a building chamber
-
- 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
- B22F10/60—Treatment of workpieces or articles after build-up
- B22F10/64—Treatment of workpieces or articles after build-up by thermal means
-
- 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
- B22F10/60—Treatment of workpieces or articles after build-up
- B22F10/66—Treatment of workpieces or articles after build-up by mechanical means
-
- 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
- B22F10/60—Treatment of workpieces or articles after build-up
- B22F10/68—Cleaning or washing
-
- 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
- B22F10/80—Data acquisition or data processing
-
- 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
-
- 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
- B33Y50/00—Data acquisition or data processing for additive manufacturing
- B33Y50/02—Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
-
- 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
Abstract
The invention relates to a material increase manufacturing method of a short line segment structural feature, which comprises the steps of establishing a short line segment structural feature model; establishing the short line segment structure auxiliary module characteristics; setting a slicing software platform, and setting processing technological parameters and a scanning mode; forming under the protection of inert gas; after the forming is finished, blowing off redundant loose powder in the short line segment structural feature module; separating the substrate and the short line feature structure by linear cutting; carrying out heat treatment on the short line segment characteristics; and (5) polishing the short line segment characteristic module. The method can integrally manufacture short-line segment structural features such as multi-tooth sharp corners, thin walls, micro truss girders and the like, greatly reduces the complexity of the manufacturing process of the short-line segment structural features, shortens the manufacturing period of the short-line segment features and improves the manufacturing quality.
Description
Technical Field
The invention belongs to the technical field of material processing and metal additive manufacturing, relates to an additive manufacturing method for short-line-segment structural characteristics, and particularly relates to a design and manufacturing method for short-line-segment structures such as multi-tooth sharp corners, thin walls and micro truss girders in an aerospace engine.
Background
The short-line segment structures such as multi-tooth sharp corners, thin walls, micro truss girders and the like have important application in aerospace engines, such as a thrust chamber reinforcing rib propellant rectifying device of the aerospace engine, a polygonal grid rectifying device in an igniter and a high-performance lattice structure heat exchanger, by virtue of the advantages of high specific surface area, high specific rigidity, multifunctional concentration and the like. The traditional short line segment structure preparation process comprises a welding-assembling method, a three-dimensional weaving method and the like, and has the problems of multiple working procedures, long period, high cost, difficulty in ensuring reliability and the like, so that the application of the short line segment structure characteristic in an aerospace engine is restricted.
The additive manufacturing technology is one of the latest and most advanced manufacturing technologies at present, has the characteristics of CAD/CAM integration and efficient and agile manufacturing, and provides a brand-new solution for the design/manufacture of short-line segment structural features and the application of the design/manufacture of various complex special-shaped components in an aerospace engine.
Disclosure of Invention
Technical problem to be solved
In order to avoid the defects of the prior art, the invention provides a material increase manufacturing method of short-line structural characteristics, which can provide a brand new method for designing and manufacturing characteristic components such as multi-tooth sharp corners, thin walls, micro truss girders and the like of an aerospace engine.
Technical scheme
A method for manufacturing an additive of a short line segment structure characteristic is characterized by comprising the following steps:
step 1, establishing a short line segment structural feature model: designing a short line segment characteristic model by adopting modeling software according to a designed drawing, and exporting the model into an STL format after modeling is completed;
step 2, establishing the short line segment structure auxiliary module characteristics: adopting Magics or 3D-Xpert software to establish an auxiliary structure changing along with the shape of the short line segment;
if the short line section is characterized by a multi-tooth sharp-corner structure, no auxiliary module is required to be added;
if the short line segment is characterized by a discrete thin-wall structure, an auxiliary module is added to form a closed structure; the auxiliary module gives a closed structure to the discrete short line segment characteristics;
if the short line segment is characterized by a micro truss girder structure, surface skin auxiliary modules are built around the short line segment;
and after modeling is finished, exporting the auxiliary module into an STL format, wherein the export precision is not less than 0.02 mm.
Using magic software, sequentially importing the models in the step 1 and the step 2, and assembling according to the assembling requirement;
after the model is assembled, the closing of the thin-wall structure is ensured; cutting and removing the isolated ribs to the nearest node, and exporting the model into an STL format;
the laser selection melting forming processing technological parameters are as follows:
1) auxiliary module structure: the laser power is 280W-320W, the scanning speed is 960 mm/s-1050 mm/s, the spot diameter is 65 μm-75 μm, the powder spreading thickness is 0.04 mm-0.06 mm, and the scanning strategy is as follows: linear grating filling type;
2) short line segment structure: the laser power is 180W-220W, the scanning speed is 1100 mm/s-1300 mm/s, the spot diameter is 65 μm-75 μm, the powder spreading thickness is 0.02 mm-0.06 mm, and the scanning strategy is as follows: the linear grating filling type is adopted, and the length of a single scanning line is controlled to be more than 0.5 mm;
and 4, forming under the protection of inert gas: adopting selective laser melting forming equipment, starting laser enabling according to the processing technological parameters set in the step 3, starting forming a component, and keeping the uninterrupted argon conveying in the forming process to ensure that the oxygen content in a forming cabin is always within 1000 PPM;
and 5, after the forming is finished, blowing off redundant loose powder in the short-line structural feature module: and cleaning loose powder in the integral structure of the short line section obtained by additive manufacturing and forming by adopting compressed air of 0.6-0.8 Mpa to match with a vibration platform.
Step 6, separating the substrate and the short line segment characteristic structure by linear cutting: adopting high-speed reciprocating wire-moving electrospark wire-electrode cutting, wherein the pulse width is set to be 28-48 mu s, the pulse interval is 112-170 mu s, and the waveform is rectangular pulse;
and 7, carrying out heat treatment on the short line segment characteristics: and (3) carrying out heat treatment on the short line segment characteristics, wherein the heat treatment system comprises the following steps: keeping the temperature at 830-850 ℃ for 3h, and inflating and cooling.
Step 8, polishing the short line segment characteristic module: and (3) polishing the short line segment structure in a chemical milling mode, properly reducing the concentration of a chemical milling solution, controlling the chemical milling time within 30 s-2 min, designing a chemical milling tool for diversion, and ensuring that the structural characteristics of the short line segment are uniformly and effectively polished.
The modeling software is Pro/engineer or UG.
The derivation precision of the STL format derived from the step 1 and the step 2 is not less than 0.02 mm.
The wall thickness of the thin wall in the step 2 is less than 0.3 mm.
And the thickness of the skin in the step 2 is less than 0.5 mm.
Advantageous effects
The invention provides a material increase manufacturing method of short line segment structural characteristics, which comprises the steps of establishing a short line segment structural characteristic model; establishing the short line segment structure auxiliary module characteristics; setting a slicing software platform, and setting processing technological parameters and a scanning mode; forming under the protection of inert gas; after the forming is finished, blowing off redundant loose powder in the short line segment structural feature module; separating the substrate and the short line feature structure by linear cutting; carrying out heat treatment on the short line segment characteristics; and (5) polishing the short line segment characteristic module. The method can integrally manufacture short-line segment structural features such as multi-tooth sharp corners, thin walls, micro truss girders and the like, greatly reduces the complexity of the manufacturing process of the short-line segment structural features, shortens the manufacturing period of the short-line segment features and improves the manufacturing quality.
The invention has the beneficial effects that:
(1) the method provides a brand new method for designing and manufacturing the structural characteristics of short line sections such as multi-tooth sharp corners, thin walls, micro truss girders and the like of the aerospace engine.
(2) The short line segment structure formed by additive manufacturing has high dimensional accuracy and greatly reduces the production difficulty of short line segment characteristic components.
(3) By adopting the short-line-segment characteristic formed by additive manufacturing, a complex cutter or clamp does not need to be designed in the whole manufacturing process, the manufacturing period is greatly shortened, and the reliability of the characteristic component is improved.
Drawings
FIG. 1 is a schematic diagram of short line segment characteristics of a multi-tooth sharp corner structure according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of short line segment feature segmentation with a multi-tooth sharp corner structure according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a multi-tooth tip-angle structure short line segment feature scanning strategy according to an embodiment of the present invention.
Detailed Description
The invention will now be further described with reference to the following examples and drawings:
the embodiment of the invention discloses a design and manufacturing method of a short line segment structure characteristic, belonging to the technical field of material processing and metal additive manufacturing and comprising the following steps: establishing a short line segment structural feature model; establishing the short line segment structure auxiliary module characteristics; setting a slicing software platform, and setting processing technological parameters and a scanning mode; forming under the protection of inert gas; after the forming is finished, blowing off redundant loose powder in the short line segment structure; separating the substrate and the short line feature structure by linear cutting; carrying out heat treatment on the short line segment characteristics; and (5) polishing the short line segment characteristic module. The method can integrally manufacture short-line segment structural features such as multi-tooth sharp corners, thin walls, micro truss girders and the like, greatly reduces the complexity of the manufacturing process of the short-line segment structural features, shortens the manufacturing period of the short-line segment features and improves the manufacturing quality.
(1) Establishing a short line segment structural feature model;
(2) establishing the short line segment structure auxiliary module characteristics;
(3) setting a slicing software platform, and setting processing technological parameters and a scanning mode;
(4) forming under the protection of inert gas;
(5) after the forming is finished, blowing off redundant loose powder in the short line segment structure;
(6) separating the substrate and the short line feature structure by linear cutting;
(7) carrying out heat treatment on the short line segment characteristics;
(8) and (5) polishing the short line segment characteristic module.
In the step (1), a short line segment characteristic model is designed by using modeling software Pro/engineer or UG, the model is exported to STL format after modeling is completed, and the export precision is not less than 0.02 mm.
In the step (2), an auxiliary structure changing along with the shape of the short line segment is established by adopting software such as Magics, 3D-Xpert and the like. If the short line section is characterized by a multi-tooth sharp-corner structure, no auxiliary module is required to be added; if the short line segment is characterized by a discrete thin-wall (the wall thickness is less than 0.3mm) structure, an auxiliary module is added to form a closed structure; if the short line segment is characterized by a micro truss girder structure, surface skin (the thickness of the skin is less than 0.5mm) auxiliary modules are built around the short line segment. And after modeling is finished, exporting the auxiliary module into an STL format, wherein the export precision is not less than 0.02 mm. Using software such as magic and the like, sequentially importing the models in the steps (1) and (2), selecting a standard according to assembly requirements, assembling, and carefully checking the thin-wall structure after the models are assembled to ensure the closure of the thin-wall structure; and (4) inspecting the micro truss girder, cutting and removing the isolated ribs to the nearest nodes, and exporting the model into an STL format with the exporting precision not less than 0.02 mm.
In the step (3), according to the characteristics of the 06Cr19Ni10 stainless steel material, setting the laser selection melting forming processing technological parameters in the slicing software platform: 1) auxiliary module structure: the laser power is 280W-320W, the scanning speed is 960 mm/s-1050 mm/s, the spot diameter is 65 μm-75 μm, the powder spreading thickness is 0.04 mm-0.06 mm, and the scanning strategy is as follows: linear grating filling type; 2) short line segment structure: the laser power is 180W-220W, the scanning speed is 1100 mm/s-1300 mm/s, the spot diameter is 65 μm-75 μm, the powder spreading thickness is 0.02 mm-0.06 mm, and the scanning strategy is as follows: the linear grating filling type is adopted, and the length of a single scanning line is controlled to be more than 0.5 mm.
In the step (4), the inert gas is argon, and the oxygen content of the atmosphere in the forming process is required to be less than 1000 PPM.
And (5) cleaning loose powder in the short line segment integral structure obtained by additive manufacturing and forming by adopting 0.6-0.8 Mpa compressed air to match with a vibration platform.
In the step (6), the wire cutting adopts high-speed reciprocating wire-cut electrical discharge machining, the pulse width is set to be 28-48 mu s, the pulse interval is 112-170 mu s, and the waveform is rectangular pulse.
In the step (7), the short line segment characteristics are subjected to heat treatment, wherein the heat treatment system comprises the following steps: keeping the temperature at 830-850 ℃ for 3h, and inflating and cooling.
And (8) polishing the short line segment structure in a chemical milling mode, wherein the concentration of a chemical milling solution is properly low, the chemical milling time is controlled within 30 s-2 min, and a chemical milling tool is designed for diversion to ensure that the short line segment structure characteristic is uniformly and effectively polished.
The embodiment of the invention provides a method for designing and manufacturing a multi-tooth sharp-corner short-line-section characteristic reinforcing rib component, which comprises the following steps:
(1) the multi-tooth sharp-corner short-line-section characteristic reinforcing rib component is designed by using modeling software UG NX7.5, the overall outline size of the heat exchanger is 85.4mm × 19.7.7 mm × 26.2.2 mm, the height of a single tooth is 26.2mm, the length of the thickness × is 2.7mm × 3.1.1 mm, the minimum sharp corner is 40 degrees, the width of the sharp corner is 0.1mm, the model derivation is STL format after modeling is completed, and the derivation precision is not less than 0.02mm, as shown in figure 1.
(2) And (3) segmenting the multi-tooth sharp-corner short-line-section characteristic reinforcing ribs by using Magics software, wherein the dividing lines are respectively 3mm and 22.6mm away from the bottom end, and as shown in figure 2, the whole product is divided into 3 parts, namely a base part, a vertical line part and a sharp-corner part from the bottom to the top in sequence.
(3) When the slicing software platform is set, according to the characteristics of the 06Cr19Ni10 stainless steel material, setting the laser selection melting forming processing technological parameters in the slicing software platform:
1) a base portion: the laser is a structure 0 mm-3 mm away from the bottom, the set laser power is 280W-320W, the scanning speed is 960 mm/s-1050 mm/s, the spot diameter is 65 μm-75 μm, the powder spreading thickness is 0.04 mm-0.06 mm, and the scanning strategy is as follows: linear grating filling type;
2) a vertical line portion: the structure is 3 mm-22.6 mm from the bottom, the set laser power is 240W-260W, the scanning speed is 1100 mm/s-1300 mm/s, the spot diameter is 65 μm-75 μm, the powder spreading thickness is 0.04 mm-0.06 mm, and the scanning strategy is as follows: linear grating filling type;
3) a sharp corner portion: the laser is a structure 22.6 mm-26.2 mm away from the bottom, the set laser power is 180W-220W, the scanning speed is 1100 mm/s-1300 mm/s, the spot diameter is 65 μm-75 μm, the powder spreading thickness is 0.04 mm-0.06 mm, and the scanning strategy is as follows: continuous grating filling type;
4) and after necessary support is added, the model is guided into a set slicing software platform, slicing is carried out, and the processing program is obtained after the slicing processing.
(4) And (3) switching on the cleaning function of the equipment, starting laser energy when the oxygen content of the atmosphere in the forming cabin is less than 1000PPM, starting to form the multi-tooth sharp-corner short-line-segment characteristic reinforcing rib component, and keeping the continuous delivery of argon in the forming process to ensure that the oxygen content in the forming cabin is always within 1000 PPM.
(5) A compressed air hose of 0.6Mpa to 0.8Mpa is adopted to clean the multi-tooth sharp-corner short-line-section characteristic reinforcing rib component obtained by butt joint additive manufacturing and forming, and loose powder on the surface of the reinforcing rib component is cleaned by matching with a vibration platform, so that the generation of the surplus loose powder is prevented.
(6) The substrate and the multi-tooth sharp-corner short-line-section characteristic reinforcing rib component are separated by adopting high-speed reciprocating wire-moving electric spark wire cutting, the separation process ensures that the wire-cutting wire is tightly attached to the substrate plane, and the specific parameters are set as follows: the pulse width is 28-48 mus, the pulse interval is 112-170 mus, the waveform is rectangular pulse.
(7) After cleaning the redundant supports, carrying out heat treatment on the reinforcing ribs, wherein the heat treatment system comprises the following steps: keeping the temperature at 830-850 ℃ for 3h, and inflating and cooling.
(8) Polishing the reinforcing ribs in a chemical milling mode, wherein the formula of the polishing solution comprises the following steps: mass fraction H2SO4Solution: 15 percent; HCl solution: 13 percent; HNO3Solution: 16 percent of water and the balance of water, the temperature is 67-78 ℃, and the chemical milling time is controlled to be 1-1.5 min.
Claims (5)
1. A method for manufacturing an additive of a short line segment structure characteristic is characterized by comprising the following steps:
step 1, establishing a short line segment structural feature model: designing a short line segment characteristic model by adopting modeling software according to a designed drawing, and exporting the model into an STL format after modeling is completed;
step 2, establishing the short line segment structure auxiliary module characteristics: adopting Magics or 3D-Xpert software to establish an auxiliary structure changing along with the shape of the short line segment;
if the short line section is characterized by a multi-tooth sharp-corner structure, no auxiliary module is required to be added;
if the short line segment is characterized by a discrete thin-wall structure, an auxiliary module is added to form a closed structure; the auxiliary module gives a closed structure to the discrete short line segment characteristics;
if the short line segment is characterized by a micro truss girder structure, surface skin auxiliary modules are built around the short line segment;
and after modeling is finished, exporting the auxiliary module into an STL format, wherein the export precision is not less than 0.02 mm.
Using magic software, sequentially importing the models in the step 1 and the step 2, and assembling according to the assembling requirement;
after the model is assembled, the closing of the thin-wall structure is ensured; cutting and removing the isolated ribs to the nearest node, and exporting the model into an STL format;
step 3, setting a slicing software platform: importing the file exported in the STL format into a slicing software platform, carrying out slicing processing, and setting parameters of a laser selective melting forming processing technology to obtain a processing program;
the laser selection melting forming processing technological parameters are as follows:
1) auxiliary module structure: the laser power is 280W-320W, the scanning speed is 960 mm/s-1050 mm/s, the spot diameter is 65 μm-75 μm, the powder spreading thickness is 0.04 mm-0.06 mm, and the scanning strategy is as follows: linear grating filling type;
2) short line segment structure: the laser power is 180W-220W, the scanning speed is 1100 mm/s-1300 mm/s, the spot diameter is 65 μm-75 μm, the powder spreading thickness is 0.02 mm-0.06 mm, and the scanning strategy is as follows: the linear grating filling type is adopted, and the length of a single scanning line is controlled to be more than 0.5 mm;
and 4, forming under the protection of inert gas: adopting selective laser melting forming equipment, starting laser enabling according to the processing technological parameters set in the step 3, starting forming a component, and keeping the uninterrupted argon conveying in the forming process to ensure that the oxygen content in a forming cabin is always within 1000 PPM;
and 5, after the forming is finished, blowing off redundant loose powder in the short-line structural feature module: and cleaning loose powder in the integral structure of the short line section obtained by additive manufacturing and forming by adopting compressed air of 0.6-0.8 Mpa to match with a vibration platform.
Step 6, separating the substrate and the short line segment characteristic structure by linear cutting: adopting high-speed reciprocating wire-moving electrospark wire-electrode cutting, wherein the pulse width is set to be 28-48 mu s, the pulse interval is 112-170 mu s, and the waveform is rectangular pulse;
and 7, carrying out heat treatment on the short line segment characteristics: and (3) carrying out heat treatment on the short line segment characteristics, wherein the heat treatment system comprises the following steps: keeping the temperature at 830-850 ℃ for 3h, and inflating and cooling.
Step 8, polishing the short line segment characteristic module: and (3) polishing the short line segment structure in a chemical milling mode, properly reducing the concentration of a chemical milling solution, controlling the chemical milling time within 30 s-2 min, designing a chemical milling tool for diversion, and ensuring that the structural characteristics of the short line segment are uniformly and effectively polished.
2. The additive manufacturing method of a short-segment structural feature of claim 1, wherein: the modeling software is Pro/engineer or UG.
3. The additive manufacturing method of a short-segment structural feature of claim 1, wherein: the derivation precision of the STL format derived from the step 1 and the step 2 is not less than 0.02 mm.
4. The additive manufacturing method of a short-segment structural feature of claim 1, wherein: the wall thickness of the thin wall in the step 2 is less than 0.3 mm.
5. The additive manufacturing method of a short-segment structural feature of claim 1, wherein: and the thickness of the skin in the step 2 is less than 0.5 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911262481.2A CN111347039A (en) | 2019-12-11 | 2019-12-11 | Additive manufacturing method for short line segment structural features |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911262481.2A CN111347039A (en) | 2019-12-11 | 2019-12-11 | Additive manufacturing method for short line segment structural features |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111347039A true CN111347039A (en) | 2020-06-30 |
Family
ID=71193974
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911262481.2A Pending CN111347039A (en) | 2019-12-11 | 2019-12-11 | Additive manufacturing method for short line segment structural features |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111347039A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113070795A (en) * | 2021-04-02 | 2021-07-06 | 杨金莲 | Metal alloy wire manufacturing and processing system |
| CN117001289A (en) * | 2023-08-25 | 2023-11-07 | 西安交通大学 | Composite process and system for preparing special-shaped micro-channel plate heat exchanger |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160070254A1 (en) * | 2012-06-21 | 2016-03-10 | Massachusetts Institute Of Technology | Methods and Apparatus for Digital Material Skins |
| CN106808681A (en) * | 2016-12-30 | 2017-06-09 | 华中科技大学 | A kind of method for improving increasing material manufacturing element precision |
| US20170364058A1 (en) * | 2016-06-17 | 2017-12-21 | Hamilton Sundstrand Corporation | Controlled thin wall thickness of heat exchangers through modeling of additive manufacturing process |
| CN108262478A (en) * | 2017-12-25 | 2018-07-10 | 西安航天发动机有限公司 | Manufacturing method, electronic equipment and the system of 06Cr19Ni10 stainless steel honeycomb thin-wall members |
| CN108376182A (en) * | 2016-12-20 | 2018-08-07 | 中国航空制造技术研究院 | A kind of reinforcement increasing material manufacturing micro unit and stressed-skin construction binding performance control method |
| CN109128168A (en) * | 2018-10-16 | 2019-01-04 | 沈阳航空航天大学 | A kind of synchronous powder feeding system increasing material manufacturing Process Planning Method based on structure feature |
| CN109489467A (en) * | 2018-11-23 | 2019-03-19 | 西安航天发动机有限公司 | A kind of airspace engine heat exchange component and preparation method thereof |
| CN110523985A (en) * | 2019-09-20 | 2019-12-03 | 航发优材(镇江)增材制造有限公司 | A kind of technique that selective laser fusing prepares guide vane |
-
2019
- 2019-12-11 CN CN201911262481.2A patent/CN111347039A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160070254A1 (en) * | 2012-06-21 | 2016-03-10 | Massachusetts Institute Of Technology | Methods and Apparatus for Digital Material Skins |
| US20170364058A1 (en) * | 2016-06-17 | 2017-12-21 | Hamilton Sundstrand Corporation | Controlled thin wall thickness of heat exchangers through modeling of additive manufacturing process |
| CN108376182A (en) * | 2016-12-20 | 2018-08-07 | 中国航空制造技术研究院 | A kind of reinforcement increasing material manufacturing micro unit and stressed-skin construction binding performance control method |
| CN106808681A (en) * | 2016-12-30 | 2017-06-09 | 华中科技大学 | A kind of method for improving increasing material manufacturing element precision |
| CN108262478A (en) * | 2017-12-25 | 2018-07-10 | 西安航天发动机有限公司 | Manufacturing method, electronic equipment and the system of 06Cr19Ni10 stainless steel honeycomb thin-wall members |
| CN109128168A (en) * | 2018-10-16 | 2019-01-04 | 沈阳航空航天大学 | A kind of synchronous powder feeding system increasing material manufacturing Process Planning Method based on structure feature |
| CN109489467A (en) * | 2018-11-23 | 2019-03-19 | 西安航天发动机有限公司 | A kind of airspace engine heat exchange component and preparation method thereof |
| CN110523985A (en) * | 2019-09-20 | 2019-12-03 | 航发优材(镇江)增材制造有限公司 | A kind of technique that selective laser fusing prepares guide vane |
Non-Patent Citations (2)
| Title |
|---|
| 刘静: "《3D打印技术理论与实践》", 31 December 2017, 武汉大学出版社 * |
| 杨永强，吴伟辉: "《中国科协三峡科技出版资助计划-制造改变设计3D打印直接制造技术》", 30 June 2014, 中国科学技术出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113070795A (en) * | 2021-04-02 | 2021-07-06 | 杨金莲 | Metal alloy wire manufacturing and processing system |
| CN117001289A (en) * | 2023-08-25 | 2023-11-07 | 西安交通大学 | Composite process and system for preparing special-shaped micro-channel plate heat exchanger |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111618298B (en) | Efficient collaborative additive manufacturing method for multi-material and variable-rigidity structure | |
| CN105252145B (en) | A kind of method and apparatus of sheet metal superposition manufacture complicated shape part | |
| KR20200083312A (en) | Method for controlling deformation and precision of parts in parallel in additive manufacturing process | |
| CN109202082B (en) | Additive, equal-material and subtractive composite metal 3D laser forming device and method thereof | |
| CN111266574A (en) | Integral manufacturing method of pin type head interlayer shell of aerospace engine | |
| CN111347039A (en) | Additive manufacturing method for short line segment structural features | |
| CN102179517A (en) | Laser-induction hybrid melting direct forming method and device | |
| CN108247050B (en) | Integral manufacturing method of large-size force-bearing gimbal ring | |
| CN105127755A (en) | Workpiece forming and reinforcing composite machining device and method | |
| CN109877323B (en) | Method for printing and forming low-porosity multi-branch heat dissipation structure by metal microdroplets | |
| CN1792513A (en) | Method for mouldless directly mfg. of parts and mould | |
| JP2008200821A (en) | Method for manufacturing honeycomb object molding die | |
| CN109489467A (en) | A kind of airspace engine heat exchange component and preparation method thereof | |
| CN107838532B (en) | Bimetal cladding additive manufacturing method | |
| CN105057666A (en) | Laser selected area fusion forming method for weldless metal dot matrix component | |
| CN109759588B (en) | Rapid additive manufacturing method for large-scale bimetal part | |
| KR100545293B1 (en) | Serial forming method | |
| CN107234239B (en) | The arc deposited laser of robot pose control forges increasing material manufacturing method and equipment | |
| CN105796195A (en) | Method for preparing titanium coping by utilizing supports | |
| CN109530696B (en) | Selective laser melting forming method for substrate as part of part | |
| CN112570730B (en) | High-precision selective laser melting forming method for cooling body part | |
| CN107030385B (en) | Electric arc increasing material manufacturing manufacturing process and device based on laser stabilization and Regulation Mechanism | |
| CN115383259A (en) | Method for manufacturing magnesium alloy component through arc additive based on synchronous cleaning | |
| CN113732309A (en) | Additive manufacturing method capable of simultaneously improving forming precision and forming efficiency | |
| CN107617856A (en) | A kind of metal cladding repairs compound increasing material manufacturing method with border cutting |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200630 |
|
| RJ01 | Rejection of invention patent application after publication |