CN112958771A - Intensification method for iron-based material energy-beam-loaded powder additive repair - Google Patents
Intensification method for iron-based material energy-beam-loaded powder additive repair Download PDFInfo
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- CN112958771A CN112958771A CN202110112214.8A CN202110112214A CN112958771A CN 112958771 A CN112958771 A CN 112958771A CN 202110112214 A CN202110112214 A CN 202110112214A CN 112958771 A CN112958771 A CN 112958771A
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- Prior art keywords
- powder
- repair
- energy
- based material
- iron
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- 239000000843 powder Substances 0.000 title claims abstract description 75
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 40
- 239000000463 material Substances 0.000 title claims abstract description 30
- 239000000654 additive Substances 0.000 title claims abstract description 28
- 230000000996 additive effect Effects 0.000 title claims abstract description 28
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title claims abstract description 17
- 239000011812 mixed powder Substances 0.000 claims abstract description 27
- 239000000758 substrate Substances 0.000 claims abstract description 23
- 230000008021 deposition Effects 0.000 claims abstract description 15
- 239000011261 inert gas Substances 0.000 claims abstract description 5
- 230000001681 protective effect Effects 0.000 claims abstract description 5
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 8
- 239000013049 sediment Substances 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 3
- 238000010891 electric arc Methods 0.000 claims description 3
- 238000010894 electron beam technology Methods 0.000 claims description 3
- 238000005498 polishing Methods 0.000 claims description 3
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 claims 1
- 229910001105 martensitic stainless steel Inorganic materials 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 2
- 244000137852 Petrea volubilis Species 0.000 description 1
- 229910001566 austenite Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
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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
- B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
- B22F7/06—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools
- B22F7/062—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools involving the connection or repairing of preformed parts
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- B22F1/0003—
-
- 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
- B33Y70/00—Materials specially adapted for additive manufacturing
-
- 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
- B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
- B22F7/06—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools
- B22F7/062—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools involving the connection or repairing of preformed parts
- B22F2007/068—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools involving the connection or repairing of preformed parts repairing articles
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Composite Materials (AREA)
- Mechanical Engineering (AREA)
- Welding Or Cutting Using Electron Beams (AREA)
- Powder Metallurgy (AREA)
Abstract
The invention discloses an intensification method for iron-based material energy-carrying beam powder additive repair, which comprises the following steps: 1) pretreating the surface of the substrate; 2) carrying out energy-carrying beam additive deposition on the repair powder on the surface of the substrate under the protective atmosphere of inert gas; 3) pretreating the surface of the repair powder deposit obtained in the step 2), and carrying out energy-carrying beam additive deposition on the mixed powder on the pretreated repair powder deposit to finish intensified energy-carrying beam powder additive repair of the iron-based material; the mixed powder is formed by mixing repair powder, Cr powder and Ni powder, wherein the Cr equivalent and the Ni equivalent in the mixed powder are the same as those in a simulated iron-based material.
Description
Technical Field
The invention belongs to the technical field of welding, and relates to an intensive method for iron-based material energy-carrying beam powder additive repair.
Background
Parts of ocean-going vessels, field combat vehicles, energy equipment, heavy-duty machinery may involve hundreds of materials. The rapid field repair of failed components in oceangoing, field and other environments of large equipment faces a contradiction between the type of repair material which can be carried and the carrying amount of each repair material. Therefore, it is necessary to increase the intensification degree of the repair material, and the demand for repairing damaged parts of a plurality of different-component substrates with one material is raised, and the demand for reducing the types and the number of materials to be repaired is reduced.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides an intensive method for the additive repair of the iron-based material energy-carrying beam powder, which can reduce the requirements on the type and the number of materials to be repaired.
In order to achieve the purpose, the intensive method for the additive repair of the energy-carrying beam powder of the iron-based material comprises the following steps of:
1) pretreating the surface of the substrate;
2) carrying out energy-carrying beam additive deposition on the repair powder on the surface of the substrate under the protective atmosphere of inert gas;
3) pretreating the surface of the repair powder deposit obtained in the step 2), and carrying out energy-carrying beam additive deposition on the mixed powder on the pretreated repair powder deposit to finish intensified energy-carrying beam powder additive repair of the iron-based material;
the mixed powder is formed by mixing repair powder, Cr powder and Ni powder, wherein the Cr equivalent and the Ni equivalent in the mixed powder are the same as those in a simulated iron-based material.
The specific operation of the step 1) is as follows: and polishing the surface of the substrate, wiping the substrate with acetone, and drying the substrate.
The specific process of pretreating the surface of the repair powder deposit obtained in step 2) in step 3) is as follows: and grinding the surface of the repaired powder sediment.
The energy-carrying beam is a laser beam, an electron beam, or an electric arc.
The invention has the following beneficial effects:
according to the intensive method for the energy-beam-loaded powder additive repair of the iron-based material, during specific operation, based on the Schonfler diagram, the mixed powder formed by mixing the repair powder, the Cr powder and the Ni powder replaces the iron-based material, the deposition of the repair powder and the mixed powder is sequentially carried out on the substrate, the requirements on the type and the number of the materials to be repaired are remarkably reduced, the research progress of the repair interface of the repair powder and a plurality of different components of substrates to be repaired is accelerated, and the intensive method has the characteristics of high flexibility and high agility.
Drawings
FIG. 1 is a schematic diagram of a repair powder, a Cr powder and a Ni powder mixed together to obtain a mixed powder based on a Schffler diagram;
FIG. 2 is a schematic view of the present invention;
FIG. 3 is a graph of tensile properties of the interface of the medium and high strength martensitic stainless steel based powder with mixed powder deposit at different equivalent distances according to example one;
FIG. 4 is a graph showing the microhardness of the bonding interface of the deposit at equivalent distances D2% and D7% between the high-strength martensitic stainless steel-based powder and the mixed powder in example I;
fig. 5 is a graph of XRD test results at the interface when the equivalent distance D is 2% and at the interface when D is 7% between the medium and high strength martensitic stainless steel-based powder and the mixed powder in example one.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings:
referring to fig. 1 and 2, the intensive method for the energy-carrying beam powder additive repair of the iron-based material comprises the following steps:
1) pretreating the surface of the substrate;
2) carrying out energy-carrying beam additive deposition on the repair powder on the surface of the substrate under the protective atmosphere of inert gas;
3) pretreating the surface of the repair powder deposit obtained in the step 2), and carrying out energy-carrying beam additive deposition on the mixed powder on the pretreated repair powder deposit to finish intensified energy-carrying beam powder additive repair of the iron-based material;
the mixed powder is formed by mixing repair powder, Cr powder and Ni powder, wherein the Cr equivalent and the Ni equivalent in the mixed powder are the same as those in a simulated iron-based material.
The specific operation of the step 1) is as follows: and polishing the surface of the substrate, wiping the substrate with acetone, and drying the substrate.
The specific process of pretreating the surface of the repair powder deposit obtained in step 2) in step 3) is as follows: and grinding the surface of the repaired powder sediment.
The energy-carrying beam is a laser beam, an electron beam, or an electric arc.
Example one
This example exemplifies laser energy beam direct deposition additive using high strength martensitic stainless steel containing 18.3% Cr equivalent and 6.4% Ni equivalent as repair powder.
The operation flow in the material increase process is shown in fig. 2, the substrate is polished by sand paper, and then the surface of the substrate is wiped by acetone and dried for standby;
mixing the repair powder with pure Ni powder to obtain 8 mixed powders with equivalent distances of Cr and Ni of 2%, 7%, 12%, 17%, 22%, 30%, 40% and 60% to the repair powder, wherein the equivalent distance D is defined as:
under the protective atmosphere of inert gas, carrying out laser additive deposition on repair powder on a substrate to obtain a repair powder deposition body after the repair powder deposition is finished; then, the upper surface of the repair powder sedimentary body is machined and polished; and finally, performing additive deposition on the repair powder deposition body to obtain mixed powder, and completing the intensive energy-carrying beam powder additive repair.
As shown in fig. 3, the tensile strength of the bonding interface between the base powder and the mixed powder deposit is about 1200MPa when D is 2%, the tensile strength of the bonding interface between the base powder and the mixed powder deposit is significantly decreased when D is 7%, and the tensile strength of the bonding interface between the base powder and the mixed powder deposit is not greatly changed and fluctuates within a range of 390MPa to 500MPa when D is 7%, 12%, 17%, 22%, 30%, 40%, and 60%. Selecting samples of the bonding interface of the base powder and the mixed powder sediment with D being 2% and D being 7% to carry out microhardness distribution analysis, wherein the microhardness distribution is shown as a figure 4, and as can be seen from the figure 4, when the D being 2%, the microhardness of the interface of the base powder and the mixed powder sediment fluctuates between 390HV and 450 HV; and when D is 7%, the microhardness of the interface of the base powder and the mixed powder deposit fluctuates between 150HV and 450HV, and a large hardness gradient occurs at the interface.
According to the XRD test results shown in fig. 5, the phase composition at the interface of the base powder and the mixed powder condensate changes with the equivalent distance D, and the γ peak gradually increases as the composition changes from the base powder to D of 7%, indicating that the austenite content gradually increases.
Claims (4)
1. An intensification method for iron-based material energy-carrying beam powder additive repair is characterized by comprising the following steps:
1) pretreating the surface of the substrate;
2) carrying out energy-carrying beam additive deposition on the repair powder on the surface of the substrate under the protective atmosphere of inert gas;
3) pretreating the surface of the repair powder deposit obtained in the step 2), and carrying out energy-carrying beam additive deposition on the mixed powder on the pretreated repair powder deposit to finish intensified energy-carrying beam powder additive repair of the iron-based material;
the mixed powder is formed by mixing repair powder, Cr powder and Ni powder, wherein the Cr equivalent and the Ni equivalent in the mixed powder are the same as those in a simulated iron-based material.
2. The intensive method for the additive repair of the energy-carrying beam powder of the iron-based material according to claim 1, wherein the specific operation of the step 1) is as follows: and polishing the surface of the substrate, wiping the substrate with acetone, and drying the substrate.
3. The intensive method for the additive repair of the energy-carrying beam powder of the iron-based material according to claim 1, wherein the specific process of pretreating the surface of the repaired powder deposit obtained in the step 2) in the step 3) is as follows: and grinding the surface of the repaired powder sediment.
4. The intensive method for the additive repair of an energy-carrying beam powder of a ferrous based material according to claim 1, wherein the energy-carrying beam is a laser beam, an electron beam or an electric arc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110112214.8A CN112958771B (en) | 2021-01-27 | 2021-01-27 | Intensification method for iron-based material energy-beam-loaded powder additive repair |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110112214.8A CN112958771B (en) | 2021-01-27 | 2021-01-27 | Intensification method for iron-based material energy-beam-loaded powder additive repair |
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| Publication Number | Publication Date |
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| CN112958771A true CN112958771A (en) | 2021-06-15 |
| CN112958771B CN112958771B (en) | 2022-04-05 |
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| CN202110112214.8A Active CN112958771B (en) | 2021-01-27 | 2021-01-27 | Intensification method for iron-based material energy-beam-loaded powder additive repair |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101899662A (en) * | 2010-07-22 | 2010-12-01 | 西安交通大学 | Method for improving surface evenness of laser metal forming part |
| CN105598450A (en) * | 2016-02-02 | 2016-05-25 | 陕西天元智能再制造股份有限公司 | Laser three-dimensional profiling repair method for damaged components and parts |
| CN107470619A (en) * | 2017-07-12 | 2017-12-15 | 北京煜鼎增材制造研究院有限公司 | A kind of increasing material manufacturing method of metal parts |
| CN109158599A (en) * | 2018-09-18 | 2019-01-08 | 西南交通大学 | The 3D printing in-situ remediation system and its restorative procedure of metal parts damage |
| US20190275755A1 (en) * | 2018-03-08 | 2019-09-12 | The Boeing Company | Three-Dimensional Printing of Composite Repair Patches and Structures |
| CN111549275A (en) * | 2020-04-30 | 2020-08-18 | 中车工业研究院有限公司 | Iron-based alloy powder for axle additive repair and preparation method and application thereof |
| CN112195468A (en) * | 2020-10-23 | 2021-01-08 | 广东镭奔激光科技有限公司 | Damaged blade repairing method and device of blisk based on double laser beams |
-
2021
- 2021-01-27 CN CN202110112214.8A patent/CN112958771B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101899662A (en) * | 2010-07-22 | 2010-12-01 | 西安交通大学 | Method for improving surface evenness of laser metal forming part |
| CN105598450A (en) * | 2016-02-02 | 2016-05-25 | 陕西天元智能再制造股份有限公司 | Laser three-dimensional profiling repair method for damaged components and parts |
| CN107470619A (en) * | 2017-07-12 | 2017-12-15 | 北京煜鼎增材制造研究院有限公司 | A kind of increasing material manufacturing method of metal parts |
| US20190275755A1 (en) * | 2018-03-08 | 2019-09-12 | The Boeing Company | Three-Dimensional Printing of Composite Repair Patches and Structures |
| CN109158599A (en) * | 2018-09-18 | 2019-01-08 | 西南交通大学 | The 3D printing in-situ remediation system and its restorative procedure of metal parts damage |
| CN111549275A (en) * | 2020-04-30 | 2020-08-18 | 中车工业研究院有限公司 | Iron-based alloy powder for axle additive repair and preparation method and application thereof |
| CN112195468A (en) * | 2020-10-23 | 2021-01-08 | 广东镭奔激光科技有限公司 | Damaged blade repairing method and device of blisk based on double laser beams |
Non-Patent Citations (1)
| Title |
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| 赵方方 等: "45钢表面激光熔覆316L涂层显微组织与性能", 《激光与红外》 * |
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