CN111408904B - Method for preparing sandwich plate with high efficiency and high quality by electric arc and sandwich plate - Google Patents
Method for preparing sandwich plate with high efficiency and high quality by electric arc and sandwich plate Download PDFInfo
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- CN111408904B CN111408904B CN202010256723.3A CN202010256723A CN111408904B CN 111408904 B CN111408904 B CN 111408904B CN 202010256723 A CN202010256723 A CN 202010256723A CN 111408904 B CN111408904 B CN 111408904B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/0026—Arc welding or cutting specially adapted for particular articles or work
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/235—Preliminary treatment
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Abstract
The invention provides a method for preparing a sandwich plate with high efficiency and high quality by electric arc welding and the sandwich plate, and provides a method for manufacturing the sandwich plate by electric arc welding molding with low cost, high quality and high efficiency aiming at the problems of insufficient connection width of a T-shaped joint of a core plate and a panel, stress concentration of a welding joint, reduction of strength and toughness of the sandwich plate and the like when the sandwich plate is welded by laser; the ceramic lining plate is assembled with the panel and the core plate before the sandwich plate is welded, and the ceramic lining plate is fixed at the welding groove formed by the panel and the core plate and lined with the ceramic lining plate, so that the process control precision requirement of welding electric arc is met, the good forming of the welding line at the joint of the panel and the core plate is realized under the condition of ensuring the perfect filling of the groove, and the problem of core plate welding leakage which is easy to occur in the electric arc process is solved.
Description
Technical Field
The invention relates to the technical field of material processing, in particular to a method for preparing a sandwich plate with high efficiency and high quality by an electric arc and the sandwich plate.
Background
The metal sandwich plate is a novel lightweight hollow sandwich structure with a core plate sandwiched between two panels, has the characteristics of high strength and high specific stiffness, and is widely used in the market. The composite material has wide application in various fields such as ships, bridges, automobiles and the like, and is often applied to parts such as a front wall panel, a roof outer panel, a door outer panel, a fuel tank bottom shell, an outer cover and the like of an automobile. The application of the sandwich plate not only ensures the rigidity requirement of the mechanical structure, but also greatly reduces the weight of the structure and achieves the aim of light weight. At present, a laser welding method is mainly adopted in the market to process and manufacture the sandwich plate, but in addition to the problem of higher equipment cost, the connection width of a core plate and a panel T-shaped joint in the sandwich plate laser welding is insufficient, so that the problems of stress concentration of the T-shaped welding joint, reduction of the strength and toughness of the sandwich plate and the like are caused.
Disclosure of Invention
Accordingly, there is a need for an efficient, high quality method of arc-forming a sandwich panel.
It is also desirable to provide a sandwich panel.
A method for arc-efficient high-quality fabrication of a sandwich panel, the method comprising the steps of,
(1) determining a welding groove and size: designing the shape and size of a butt welding groove according to the thickness of a sandwich panel and the shape of a core plate to be prepared;
(2) preparing a ceramic lining plate: preparing a proper ceramic lining plate according to the thickness of a sandwich panel and the shape of a core plate which are required to be prepared;
(3) assembling: according to the welding groove and the size determined in the step (1), pre-welding assembly is carried out on the ceramic lining plate prepared in the step (2), the panel for preparing the sandwich plate and the core plate, so that a pre-welding assembly part is prepared;
(4) welding: carrying out melting wire filling welding on the welding groove on the assembled pre-welding assembly part in the step (3) according to a proper welding process so as to prepare a post-welding assembly part;
(5) and (4) naturally cooling the welded assembly part prepared in the step (4), and disassembling the ceramic lining plate to prepare the sandwich plate.
A sandwich plate is prepared by the method.
By adopting the technical scheme, the invention has the beneficial effects that: the invention provides a method for manufacturing a sandwich plate by arc welding molding with low cost, high quality and high efficiency, aiming at the problems that when the sandwich plate is welded by laser, the T-shaped joint of a core plate and a panel has insufficient connection width, the stress of the welding joint is concentrated, the strength and toughness of the sandwich plate are reduced and the like; the ceramic lining plate is assembled with the panel and the core plate before the sandwich plate is welded, and the ceramic lining plate is fixed at the welding groove formed by the panel and the core plate and lined with the ceramic lining plate, so that the process control precision requirement of welding electric arc is met, the good forming of the welding line at the joint of the panel and the core plate is realized under the condition of ensuring the perfect filling of the groove, and the problem of core plate welding leakage which is easy to occur in the electric arc process is solved.
Drawings
Fig. 1 is a schematic structural view of an assembly of a face plate, a core plate, and a ceramic liner plate in embodiment 1 of the present invention.
Fig. 2 is a schematic structural view of an assembly of a face plate, a core plate, and a ceramic liner plate in embodiment 2 of the present invention.
Fig. 3 is a schematic structural view of an assembly of a face plate, a core plate, and a ceramic liner plate in embodiment 3 of the present invention.
In the figure: panel 01, core plate 02, ceramic lining plate 03 and welding groove 04.
Detailed Description
Example 1
Referring to fig. 1, in this embodiment, there is provided a method of arc efficient high quality fabrication of a sandwich panel, comprising the steps of,
(1) determining a welding groove and size: designing the shape and size of a butt welding groove 04 according to the thickness of a sandwich panel 01 and the shape of a core plate 02 which are prepared as required; wherein the welding groove 04 adopts an I shape;
(2) preparing a ceramic lining plate: according to the thickness of a panel 01 of a sandwich plate and the shape of a core plate 02 which are prepared as required, a proper ceramic lining plate 03 is prepared, in the embodiment, the ceramic lining plate 03 which is integrally I-shaped is selected, and four ceramic lining plates 03 are combined and installed to form a ceramic lining plate 03 assembly in a square hole shape; the end face of the ceramic lining plate 03 is square and has a flat surface, and the cross section of the ceramic lining plate is just matched with an included angle interface formed by the outer side panel 01 of the corresponding welding groove 04 and the core plate 02 and can be tightly attached;
(3) assembling: according to the welding groove 04 and the size determined in the step (1), pre-welding assembly is carried out on the ceramic lining plate 03 prepared in the step (2), the panel 01 for preparing the sandwich plate and the core plate 02, so as to prepare a pre-welding assembly part, wherein the core plate 02 is a rectangular core plate 02; when the panel 01, the core plates 02 and the ceramic lining plates 03 are assembled, the panel 01 at the bottom layer is firstly laid on the ground, the interval between the end parts of each panel 01 at the bottom layer is kept, then the core plates 02 are vertically placed on the panel 01 at the bottom layer, welding grooves 04 are formed at the junctions of the panel 01 at the bottom layer and the core plates 02, the width of the welding grooves 04 is 0.5-1.5 times of the thickness of the panel 01, then the ceramic lining plates 03 prepared in the step (2) are installed on the panel 01 at the bottom layer, the ceramic lining plates 03 are positioned between two adjacent core plates 02, the ceramic lining plates 03 at the two sides of the core plates 02 are kept to firmly clamp the core plates 02 in the middle, the functions of supporting, fixing and positioning can be achieved for the panel 01 and the core plates 02 by means of the bottom supporting and shaping effects of the ceramic lining plates, the equal-size connection of the joints and the core plates 02 is ensured, the welding precision is ensured, and the insufficient connection width is eliminated, the problems of stress concentration, strength and toughness reduction and the like of a welding joint can also be solved, and the ceramic lining plate 03 can plug a gap formed between the panel 01 and the core plate 02 so as to prevent a welding wire from flowing out of the gap after being melted in the welding process and further influence the welding quality of a welding seam; then, the top-layer face plates 01 are placed on the core plate 02, and the distance reserved between the end parts of each top-layer face plate 01 is kept to be opposite to the distance reserved between the end parts of each bottom-layer face plate 01, so that welding grooves 04 are formed at the junctions of the bottom-layer face plates 01 and the core plate 02, and the width of each welding groove 04 is 0.5-1.5 times of the thickness of the face plate 01; when the panel 01, the core plate 02 and the ceramic lining plate 03 are assembled, the butt joint precision of the core plate 02, the panel 01 and the ceramic lining plate 03 is ensured, namely when the panel 01 and the core plate 02 of the sandwich plate are assembled in a butt joint way before welding, the welding groove 04 is ensured to have a small gap, and no misalignment between the groove panel 01 and the core plate 02 or a small misalignment is ensured;
(4) welding: performing melting wire filling welding on the welding groove 04 on the assembled pre-welding assembly part in the step (3) according to a proper welding process, so as to prepare a post-welding assembly part; during welding, a traditional arc welding mode is adopted, so that the manufacturing cost of the sandwich plate is greatly reduced;
(5) and (4) naturally cooling the welded assembly prepared in the step (4), and disassembling the ceramic lining plate 03 to prepare the sandwich plate.
Example 2
Referring to fig. 2, in this embodiment, there is provided a method of arc efficient high quality fabrication of a sandwich panel, comprising the steps of,
(1) determining a welding groove and size: designing the shape and size of a butt welding groove 04 according to the thickness of a sandwich panel 01 and the shape of a core plate 02 which are prepared as required; wherein the welding groove 04 adopts an I shape;
(2) preparing a ceramic lining plate: according to the thickness of a panel 01 and the shape of a core plate 02 of a sandwich plate which are prepared as required, a proper ceramic lining plate 03 is prepared, in the embodiment, the ceramic lining plate 03 which is integrally I-shaped is selected, two end parts of the ceramic lining plate 03 are triangular and smooth in surface, and the cross section of the ceramic lining plate is just matched with an included angle interface formed by the panel 01 and the core plate 02 outside a corresponding welding groove 04 and can be tightly attached;
(3) assembling: according to the welding groove 04 and the size determined in the step (1), pre-welding assembly is carried out on the ceramic lining plate 03 prepared in the step (2), the panel 01 for preparing the sandwich plate and the core plate 02, so that a pre-welding assembly part is prepared, wherein the core plate 02 adopts the waved core plate 02; when the panel 01, the core plates 02 and the ceramic lining plate 03 are assembled, firstly, the panel 01 at the bottom layer is laid on the ground, the interval is kept between the end parts of each panel 01 at the bottom layer, then the core plate 02 is placed on the panel 01 at the bottom layer, a welding groove 04 is formed at the junction of the panel 01 at the bottom layer and the core plate 02, the width of the welding groove 04 is 0.5-1.5 times of the thickness of the panel 01, then the ceramic lining plate 03 prepared in the step (2) is installed on the panel 01 at the bottom layer, the ceramic lining plate 03 is positioned between two adjacent core plates 02, namely the ceramic lining plate 03 is positioned between two adjacent inclined edges of the core plates 02, the ceramic lining plate 03 is positioned between the core plates 02 and the panel 01, the two end parts of the ceramic lining plate 03 are just in the included angle interface formed by the core plates 02 and the bottom panel 01 and are tightly attached to the core plates 02 and the panel 01, and the bottom supporting and shaping effect of the ceramic backing plate is utilized, the ceramic liner plate 03 can plug a gap formed between the panel 01 and the core plate 02 so as to prevent a welding wire from flowing out of the gap after melting in the welding process and further influence the welding quality of a welding seam; then, the top-layer panels 01 are placed on the core board 02, the distance reserved between the ends of each top-layer panel 01 is kept to be the same as the distance reserved between the ends of each bottom-layer panel 01, the top-layer panels are arranged in a staggered mode, welding grooves 04 are formed at the junctions of the bottom-layer panels 01 and the core board 02, and the width of each welding groove 04 is 0.5-1.5 times of the thickness of the panel 01; when the panel 01, the core plate 02 and the ceramic lining plate 03 are assembled, the butt joint precision of the core plate 02, the panel 01 and the ceramic lining plate 03 is ensured, namely when the panel 01 and the core plate 02 of the sandwich plate are assembled in a butt joint way before welding, the welding groove 04 is ensured to have a small gap, and no misalignment between the groove panel 01 and the core plate 02 or a small misalignment is ensured;
(4) welding: performing melting wire filling welding on the welding groove 04 on the assembled pre-welding assembly part in the step (3) according to a proper welding process, so as to prepare a post-welding assembly part; during welding, a traditional arc welding mode is adopted, so that the manufacturing cost of the sandwich plate is greatly reduced;
(5) and (4) naturally cooling the welded assembly prepared in the step (4), and disassembling the ceramic lining plate 03 to prepare the sandwich plate.
Example 3
Referring to fig. 3, in this embodiment, there is provided a method of arc efficient high quality fabrication of a sandwich panel, comprising the steps of,
(1) determining a welding groove and size: designing the shape and size of a butt welding groove 04 according to the thickness of a sandwich panel 01 and the shape of a core plate 02 which are prepared as required; wherein the welding groove 04 adopts an I shape;
(2) preparing a ceramic lining plate: according to the thickness of a panel 01 and the shape of a core plate 02 of a sandwich plate to be prepared, a proper ceramic lining plate 03 is prepared, in the embodiment, the ceramic lining plate 03 which is integrally I-shaped is selected, two end parts are triangular, but one of the end parts is in an arc shape in contact with the core plate 02, and the surface in contact with the panel 01 is flat;
(3) assembling: according to the welding groove 04 and the size determined in the step (1), pre-welding assembly is carried out on the ceramic lining plate 03 prepared in the step (2), the panel 01 for preparing the sandwich plate and the core plate 02, so as to prepare a pre-welding assembly part, wherein the core plate 02 adopts the cylindrical core plate 02; when the panel 01, the core board 02 and the ceramic lining board 03 are assembled, firstly, the panel 01 at the bottom layer is laid on the ground, the interval is kept between the end parts of each panel 01 at the bottom layer, then the core board 02 is placed on the panel 01 at the bottom layer, a welding groove 04 is formed at the junction of the panel 01 at the bottom layer and the core board 02, the width of the welding groove 04 is 0.5-1.5 times of the thickness of the panel 01, then the ceramic lining board 03 prepared in the step (2) is arranged between the panel 01 at the bottom layer and the core board 02, the ceramic lining board 03 is kept between the core board 02 and the panel 01, the two end parts of the ceramic lining board 03 are just at the included angle interface formed by the core board 02 and the panel 01, at the moment, the surface of the ceramic lining board 03 in contact with the core board 02 is clamped from the two sides, the surface of the ceramic lining board 03 in contact with the panel 01 is tightly attached to the panel 01, and the bottom supporting and shaping effect of the ceramic lining board is achieved, the ceramic liner plate 03 can plug a gap formed between the panel 01 and the core plate 02 so as to prevent a welding wire from flowing out of the gap after melting in the welding process and further influence the welding quality of a welding seam; then, the top-layer face plates 01 are placed on the core plate 02, and the distance reserved between the end parts of each top-layer face plate 01 is kept to be opposite to the distance reserved between the end parts of each bottom-layer face plate 01, so that welding grooves 04 are formed at the junctions of the bottom-layer face plates 01 and the core plate 02, and the width of each welding groove 04 is 0.5-1.5 times of the thickness of the face plate 01; when the panel 01, the core plate 02 and the ceramic lining plate 03 are assembled, the butt joint precision of the core plate 02, the panel 01 and the ceramic lining plate 03 is ensured, namely when the panel 01 and the core plate 02 of the sandwich plate are assembled in a butt joint way before welding, the welding groove 04 is ensured to have a small gap, and no misalignment between the groove panel 01 and the core plate 02 or a small misalignment is ensured;
(4) welding: performing melting wire filling welding on the welding groove 04 on the assembled pre-welding assembly part in the step (3) according to a proper welding process, so as to prepare a post-welding assembly part; during welding, a traditional arc welding mode is adopted, so that the manufacturing cost of the sandwich plate is greatly reduced;
(5) and (4) naturally cooling the welded assembly prepared in the step (4), and disassembling the ceramic lining plate 03 to prepare the sandwich plate.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention.
Claims (7)
1. A method for preparing a sandwich plate with high efficiency and high quality by electric arc is characterized in that: the method for preparing sandwich plate with high efficiency and high quality by electric arc comprises the following steps,
(1) determining a welding groove and size: designing the shape and size of a butt welding groove according to the thickness of a sandwich panel and the shape of a core plate to be prepared;
(2) preparing a ceramic lining plate: preparing a proper ceramic lining plate according to the thickness of a sandwich panel and the shape of a core plate which are required to be prepared;
(3) assembling: according to the welding groove and the size determined in the step (1), pre-welding assembly is carried out on the ceramic lining plate prepared in the step (2), the panel for preparing the sandwich plate and the core plate, so that a pre-welding assembly part is prepared; when the panels, the core plates and the ceramic lining plates are assembled, firstly, the panel at the bottom layer is laid on the ground, the interval between the end parts of each panel at the bottom layer is kept, then, the core plates are placed on the panel at the bottom layer, welding grooves are formed at the junctions of the panel at the bottom layer and the core plates, then, the ceramic lining plates prepared in the step (2) are installed on the panel at the bottom layer, the ceramic lining plates are kept between two adjacent core plates, then, the panel at the top layer is placed on the core plates, the interval between the end parts of each panel at the top layer is kept to be the same as the interval between the end parts of each panel at the bottom layer, and the welding grooves are formed at the junctions of the panel at the top layer and the core plates;
(4) welding: carrying out melting wire filling welding on the welding groove on the assembled pre-welding assembly part in the step (3) according to a proper welding process so as to prepare a post-welding assembly part;
(5) and (4) naturally cooling the welded assembly part prepared in the step (4), and disassembling the ceramic lining plate to prepare the sandwich plate.
2. The method for arc-efficient high-quality sandwich plate fabrication of claim 1 wherein: in the step (1), the welding groove is I-shaped.
3. The method for arc-efficient high-quality sandwich plate fabrication of claim 1 wherein: the width of the welding groove formed at the junction of the bottom layer panel and the core plate and the width of the welding groove formed at the junction of the top layer panel and the core plate are 0.5-1.5 times of the thickness of the panel.
4. The method for arc-efficient high-quality sandwich plate fabrication of claim 1 wherein: and (3) ensuring the butt joint precision of the core plate, the panel and the ceramic lining plate during assembly when the panel, the core plate and the ceramic lining plate are assembled.
5. The method for arc-efficient high-quality sandwich plate fabrication of claim 1 wherein: and (3) in the step (3), when the panel, the core plate and the ceramic lining plate are assembled, the butt joint of the panel and the core plate is kept without misalignment, and the joint of the panel and the core plate is tightly combined.
6. The method for arc-efficient high-quality sandwich plate fabrication of claim 1 wherein: in the step (3), when the panel, the core plate and the ceramic lining plate are assembled, the end part of the ceramic lining plate is tightly attached to the panel and the core plate.
7. A sandwich panel, comprising: the sandwich plate is prepared by the method for preparing the sandwich plate with high efficiency and high quality by the electric arc according to any one of claims 1 to 6.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010256723.3A CN111408904B (en) | 2020-04-02 | 2020-04-02 | Method for preparing sandwich plate with high efficiency and high quality by electric arc and sandwich plate |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010256723.3A CN111408904B (en) | 2020-04-02 | 2020-04-02 | Method for preparing sandwich plate with high efficiency and high quality by electric arc and sandwich plate |
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| CN111408904B true CN111408904B (en) | 2021-10-01 |
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| GB2399539B (en) * | 2003-03-18 | 2005-09-07 | Intelligent Engineering | Method for connecting structural sandwich plate members |
| GB2414213B (en) * | 2004-05-21 | 2008-11-12 | Intelligent Engineering | Improved structural sandwich plate members |
| CN107497962B (en) * | 2017-07-05 | 2019-02-22 | 西北工业大学 | A kind of X-type dot matrix and plate fin compound core body sandwich boards and preparation method thereof |
| CN110682020B (en) * | 2019-11-07 | 2021-04-02 | 沈阳工业大学 | Titanium-iron-stainless steel three-layer composite board butt welding process method |
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