CN112355426B - Protective device for nuts with anodized layers in flame brazing process - Google Patents
Protective device for nuts with anodized layers in flame brazing process Download PDFInfo
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- CN112355426B CN112355426B CN202011173673.9A CN202011173673A CN112355426B CN 112355426 B CN112355426 B CN 112355426B CN 202011173673 A CN202011173673 A CN 202011173673A CN 112355426 B CN112355426 B CN 112355426B
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- shell
- nut
- brazing process
- anodized
- flame brazing
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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
- B23K3/00—Tools, devices, or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods
- B23K3/08—Auxiliary devices therefor
Abstract
A protective device for a nut having an anodized layer used in a flame brazing process includes a case and a heat insulating liner; the shell is two semi-cylindrical shells which are symmetrically distributed, the top surface of the shell is provided with a semi-circular hole, the outer surface of the shell is sprayed with high-temperature ceramics, and the whole nut is wrapped in the high-temperature ceramics during installation; the heat insulation gasket is composed of two semicircular rings and is arranged on the upper end face of the nut during installation to isolate the nut from the shell. According to the protective tool designed by the invention, the nut with the anodized layer is well protected in the flame brazing process, the processing of parts of the type is realized, the problems of welding protection and welding quality are thoroughly solved, the problem that the tool cannot be taken down during the welding process of the parts is solved by spraying high-temperature ceramic on the surface of the stainless steel tool, the problem that the ceramic tool is difficult to process is also solved, the asbestos gauze is arranged below the tool with the high-temperature ceramic, the pollution of asbestos gauze scraps to a welding seam is successfully prevented, and the quality of the welding seam is ensured.
Description
Technical Field
The invention belongs to the technology of aeroengine processing protection, and particularly relates to a protection device for a nut with an anodized layer in a flame brazing process.
Background
The aircraft engine pipeline is a common structure of an engine, an external pipeline system of the aircraft engine is complex and more, so in the design process, in order to avoid interference, the pipeline needs to be bent, the pipe connection is generally connected by adopting nuts, the nuts for connection and the pipeline are generally connected by flame brazing, but the bent part of the extremely individual pipeline is close to the welding part, the welding nut cannot avoid welding flame, as shown in figure 6, the welding seam, the nut and the bent part are close to each other, the flame cannot avoid burning the nut during welding, the nut has an anodized layer on a single piece, under the flame ablation of flame brazing, the anodized layer can be damaged, and the material reason cannot be carried out on the assembly again, so that the parts cannot be processed to the design requirement. In order to protect the nut from being ablated, a protection tool is generally required to be added, but the tool is difficult to design, if the tool is made of metal, brazing solder flows into the tool to weld the tool and a part to be fixed and cannot be detached due to the fact that the tool is close to a welding seam, if the tool is made of heat insulation materials such as asbestos, the tool is close to the welding seam, the welding seam is polluted by the asbestos, and welding is unqualified. Therefore, it is highly desirable to provide a protection device, which has good forming performance, cannot be welded during brazing, has a heat insulation function, and does not have the condition of polluting a weld joint, thereby realizing the nut protection during the flame brazing process.
Disclosure of Invention
In order to solve the technical problem, the invention provides a protection device for a nut with an anodized layer in a flame brazing process.
The invention is realized by the following technical scheme.
The invention provides a protection device for a nut with an anodized layer in a flame brazing process, which comprises a shell and a heat insulation liner, wherein the shell is provided with a plurality of grooves;
the shell is two semi-cylindrical shells which are symmetrically distributed, the top surface of the shell is provided with a semi-circular hole, the outer surface of the shell is sprayed with high-temperature ceramics, and the whole nut is wrapped in the high-temperature ceramics during installation;
the heat insulation gasket is composed of two semicircular rings and is arranged on the upper end face of the nut during installation to isolate the nut from the shell.
Furthermore, the shell is formed by symmetrically cutting the whole cylindrical shell, and the high-temperature ceramic on the surface is sprayed after the shell is cut.
Further, the size of the cut when the shell is cut is not more than 0.2 mm.
Further, the shell is made of 0Cr18Ni9 Ti.
Further, the thermal insulation pad is made of asbestos cloth.
Further, still include solid fixed ring, gu fixed ring encircles in the surface of casing, with two semicylindrical shells fastening as an organic whole.
Further, the fixed ring is two, evenly distributed in the periphery side surface of casing.
Further, the surface of the outer periphery of the shell is provided with a groove matched with the fixing ring, and during installation, the fixing ring is embedded in the groove to fasten the shell.
Further, the fixing ring is made of metal.
The invention has the beneficial effects that: according to the protective tool designed by the invention, the nut with the anodized layer is well protected in the flame brazing process, the processing of parts of the type is realized, the problems of welding protection and welding quality are thoroughly solved, the problem that the tool cannot be taken down during the welding process of the parts is solved by spraying high-temperature ceramic on the surface of the stainless steel tool, the problem that the ceramic tool is difficult to process is also solved, the asbestos gauze is arranged below the tool with the high-temperature ceramic, the pollution of asbestos gauze scraps to a welding seam is successfully prevented, and the quality of the welding seam is ensured.
Drawings
FIG. 1 is a schematic structural composition of the present invention;
FIG. 2 is a top view of the housing of the present invention;
FIG. 3 is a sectional view taken along line A-A of FIG. 2;
FIG. 4 is a top view of the thermal insulating blanket of the present invention;
FIG. 5 is a sectional view taken along line B-B of FIG. 4;
FIG. 6 is a schematic view of a nut mounting structure with an anodization layer to be protected;
in the figure: 1-shell, 2-heat insulation liner, 3-fastening ring and 4-nut.
Detailed Description
The technical solution of the present invention is further described below, but the scope of the claimed invention is not limited to the described.
As shown in fig. 1, a protective device for a nut having an anodized layer in a flame brazing process comprises a case 1 and a heat insulating liner 2;
the shell 1 is two semi-cylindrical shells which are symmetrically distributed, the top surface of the shell is provided with a semi-circular hole, the outer surface of the shell is sprayed with high-temperature ceramics, and the whole nut 4 is wrapped in the shell during installation;
the heat insulation gasket 2 is composed of two semicircular rings, and is arranged on the upper end face of the nut 4 during installation to isolate the nut 4 from the shell 1.
Further, the shell 1 is formed by symmetrically cutting the whole cylindrical shell, and the high-temperature ceramic on the surface is sprayed after the shell is cut.
Further, the size of the cut when the shell 1 is cut is not more than 0.2 mm.
Further, the case 1 is made using 0Cr18Ni9 Ti.
Further, the thermal insulating pad 2 is made of asbestos cloth.
Further, still include solid fixed ring 3, gu fixed ring 3 encircles in the surface of casing 1, fastens two semicylindrical shells as an organic whole.
Further, the number of the fixing rings 3 is two, and the fixing rings are uniformly distributed on the peripheral side surface of the shell 1.
Further, casing 1 periphery side surface is equipped with the recess that suits with solid fixed ring 3, and during the installation, solid fixed ring 3 inlays wherein to fasten casing 1.
Further, the fixing ring 3 is made of metal.
The shell 1 is processed into the structure shown in the figures 2-3 according to the corresponding size by adopting 0Cr18Ni9Ti, then is cut into two parts, the cut is ensured not to be larger than 0.2mm, then high-temperature ceramics is sprayed on the outer surface of the shell 1, and then the heat insulation liner 2 with the structure shown in the figures 4-5 is processed into the asbestos gauze according to the corresponding size for heat insulation.
The machining process of the parts is as follows:
1. the nut 4 is assembled and welded according to the figure 6;
2. placing a thermal insulation pad 2 on an upper surface of the nut 4 for thermal insulation;
3. assembling the shell 1 with high-temperature ceramics on a nut 4 according to the figure 1, and fixing the shell outside by using a fastening ring 3;
4. and (5) performing flame brazing welding after assembly is completed.
Claims (9)
1. A protection device for a nut with an anodized layer in a flame brazing process, characterized in that: comprises a shell (1) and a heat insulation liner (2);
the shell (1) is two semi-cylindrical shells which are symmetrically distributed, the top surface of the shell is provided with a semi-circular hole, the outer surface of the shell is sprayed with high-temperature ceramics, and the whole nut (4) is wrapped in the shell during installation;
the heat insulation gasket (2) is composed of two semicircular rings, and is arranged on the upper end face of the nut (4) during installation to isolate the nut (4) from the shell (1).
2. The protective apparatus for an anodized nut used in a flame brazing process of claim 1 wherein: the shell (1) is formed by symmetrically cutting the whole cylindrical shell, and the high-temperature ceramic on the surface is sprayed after the shell is cut.
3. The protective apparatus for an anodized nut used in a flame brazing process of claim 2 wherein: the size of the cut is not more than 0.2mm when the shell (1) is cut and formed.
4. The protective apparatus for an anodized nut used in a flame brazing process of claim 1 wherein: the housing (1) is made using 0Cr18Ni9 Ti.
5. The protective apparatus for an anodized nut used in a flame brazing process of claim 1 wherein: the heat insulation pad (2) is made of asbestos meshes.
6. The protective apparatus for an anodized nut used in a flame brazing process of claim 1 wherein: still including solid fixed ring (3), gu fixed ring (3) encircle in the surface of casing (1), with two semicylindrical shells fastening as an organic whole.
7. The protective apparatus for an anodized nut used in a flame brazing process of claim 6 wherein: the number of the fixing rings (3) is two, and the fixing rings are uniformly distributed on the surface of the outer periphery of the shell (1).
8. The protective apparatus for an anodized nut used in a flame brazing process of claim 6 wherein: casing (1) periphery side surface is equipped with the recess that suits with solid fixed ring (3), and during the installation, gu fixed ring (3) inlay wherein to fasten casing (1).
9. The protective apparatus for an anodized nut used in a flame brazing process of claim 6 wherein: the fixing ring (3) is made of metal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011173673.9A CN112355426B (en) | 2020-10-28 | 2020-10-28 | Protective device for nuts with anodized layers in flame brazing process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011173673.9A CN112355426B (en) | 2020-10-28 | 2020-10-28 | Protective device for nuts with anodized layers in flame brazing process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112355426A CN112355426A (en) | 2021-02-12 |
| CN112355426B true CN112355426B (en) | 2022-03-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011173673.9A Active CN112355426B (en) | 2020-10-28 | 2020-10-28 | Protective device for nuts with anodized layers in flame brazing process |
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| CN (1) | CN112355426B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114029583A (en) * | 2021-12-17 | 2022-02-11 | 大连长丰实业总公司 | In-situ brazing repair method for airplane hanging beam guide pipe |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2539205A1 (en) * | 1983-01-07 | 1984-07-13 | Sdecc | INVIOLABILITY RING FOR RADIATOR THERMOSTATIC FAUCET HEAD |
| CN201991912U (en) * | 2011-04-26 | 2011-09-28 | 中国石油化工股份有限公司 | Bolt protecting device |
| CN102489818A (en) * | 2011-11-29 | 2012-06-13 | 刘迎春 | Novel plasma soldering gun nozzle |
| CN102837100B (en) * | 2012-09-06 | 2014-10-01 | 珠海格力电器股份有限公司 | Flame brazing welding machine and pipe joint protecting tool thereof |
| CN203509388U (en) * | 2013-09-16 | 2014-04-02 | 浙江吉利控股集团有限公司 | Protective cover for preventing cylinder from damage |
| CN203516401U (en) * | 2013-09-24 | 2014-04-02 | 中国石油大学(华东) | Bolt and nut protective jacket |
| CN205583591U (en) * | 2016-03-30 | 2016-09-14 | 铭品电缆集团有限公司 | Cover is pressed from both sides in cable protection |
| CN209164338U (en) * | 2018-12-03 | 2019-07-26 | 哈尔滨锅炉厂有限责任公司 | Bolt thread and nut-protecting sleeve |
| CN210490294U (en) * | 2019-10-25 | 2020-05-08 | 沈阳电业局电缆工程有限公司 | Anti-abrasion protection device for cable laying construction |
| CN111496365B (en) * | 2020-04-02 | 2022-03-04 | 上海新力动力设备研究所 | Solid rocket engine shell assembly welding tool with embedded end cover |
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