CN116252018A - Clamping method for brazing in revolving body structure product furnace - Google Patents
Clamping method for brazing in revolving body structure product furnace Download PDFInfo
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- CN116252018A CN116252018A CN202211706492.7A CN202211706492A CN116252018A CN 116252018 A CN116252018 A CN 116252018A CN 202211706492 A CN202211706492 A CN 202211706492A CN 116252018 A CN116252018 A CN 116252018A
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- 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
- B23K3/087—Soldering or brazing jigs, fixtures or clamping means
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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
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/008—Soldering within a furnace
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- Mechanical Engineering (AREA)
- Muffle Furnaces And Rotary Kilns (AREA)
Abstract
A clamping method for brazing in a revolving body structure product furnace belongs to the field of mechanical manufacturing and processing. The device adopted by the method mainly comprises a main shaft, a supporting ring and a supporting disc, and the brazing in the product furnace is realized by fixedly connecting the product with the tool. The assembling method can inhibit the instability and deformation of the product during high-temperature brazing, is suitable for brazing in a furnace of a revolving body structure product, can realize continuous rotation brazing of the product, has the characteristics of simple structure, simple and convenient operation and repeated use, and can be used for brazing and connecting the products in the field of machining to form an integral brazing structural member.
Description
Technical Field
The invention relates to a clamping method for brazing in a revolving body structure product furnace, and belongs to the technical field of mechanical manufacturing and processing.
Background
At present, the brazing of the revolving body structure product is generally carried out in a non-rotating mode, namely, a workpiece is in a static state in the brazing process, and the product is in a vacuum state, so that the brazing connection is realized; the brazing mode has higher requirements on equipment, the volume of the equipment is obviously increased along with the increase of the size of the product, and the vacuumizing time of a vacuum chamber in the brazing process is longer, the efficiency is lower and the production cost is higher; meanwhile, because equipment is directly heated on the product, the space-time nonuniformity of the product on the periphery is caused, and brazing material blockage is easy to form in the brazing process, particularly a large-size structural member. In order to improve the defects of the brazing mode, the clamping method for brazing the revolving body structural product is provided, the product keeps rotating in the brazing process, and meanwhile, the product can be in a non-vacuum environment, so that the brazing efficiency is improved, and the production cost is reduced.
Disclosure of Invention
The invention solves the technical problems that: the clamping method for brazing in the revolving body structure product furnace is provided, the product rotation brazing is realized, the brazing environment can be in a non-vacuum environment, the structure is simple, the operation is convenient, the repeated use is realized, the production cost is reduced, and the production efficiency is improved.
The technical scheme of the invention is as follows: a clamping tool for brazing in a revolving body structure product furnace comprises a main shaft, a second connecting pipe, a first supporting ring, a fixing frame, a connecting sheet, a second supporting ring and a supporting disc;
the fixing frame and the supporting disc are fixedly connected with the main shaft and are not detachable;
the second connecting pipe is fixedly connected with the main shaft and the product;
the first support ring is connected with the product but not connected with the fixing frame;
the second supporting ring is fixedly connected with the product through a connecting sheet, but is not connected with the supporting disc;
the first connecting pipe is connected with the product and the main shaft, and meets the requirement of vacuum brazing of an inner cavity interlayer of the product.
According to the clamping method for brazing in the revolving body structure product furnace realized by the clamping tool for brazing in the revolving body structure product furnace, the method comprises the following steps:
s1, fixedly connecting a second support ring with a product by using a connecting sheet;
s2, loading the product into a main shaft, and connecting the first support ring with the product;
s3, connecting a second connecting pipe to be fixedly connected with the product and the main shaft;
s4, connecting and fixing the first connecting pipe with the product and the main shaft;
s5, feeding the product and the main shaft into a furnace for brazing.
Further, in the step S1, the material of the connecting piece and the second supporting ring should be the same as the material of the outer wall; the maximum fit clearance between the second support ring and the product is not more than 1mm; the thickness of the connecting sheet parent metal is delta 2-delta 3mm, and the connecting sheet parent metal is connected to the thick wall part or the process allowance part of the product; the connecting sheets are distributed around the circumference at intervals of 150-200 mm, and the circumference is uniformly distributed.
Further, in the step S2, the material of the first support ring is the same as that of the product, the assembly gap between the first support ring and the fixing frame is not more than 0.2mm, and the fitting gap between the first support ring and the product is not more than 0.5mm at maximum; the argon arc welding method is adopted, and 4 to 6 positions are uniformly distributed around the circle.
Further, in the step S2, after the product is loaded into the tool, sufficient axial clearance is ensured between the second support ring and the support disc, and the longer the product is in the axial direction, the larger the reserved axial clearance is, which is not smaller than 50mm; and Zhou Juanfang, a limiting block is reserved on the supporting disc to limit the rotation of the peripheral ring of the second supporting ring, so that the gap between the two is not more than 1.0mm.
In S3, the material of the connecting tube is 1Cr18NI9Ti or the same as the product base material.
Further, the wall thickness delta of the pipe wall is not less than 3mm, 6 parts are uniformly distributed on the circumference, each part is connected by adopting an argon arc welding method, and the structural strength of the welding seam is high.
Further, in S4, the first connection tube material is 1Cr18NI9Ti.
Further, the wall thickness delta of the pipe wall is not less than 1.0mm.
Further, before the product is brazed in a furnace, helium mass spectrometry inspection is carried out on all connecting parts by adopting a negative pressure method, and the leakage rate is required to be not more than 1.0x10 -6 MPa。
Compared with the prior art, the invention has the advantages that:
(1) The invention solves the problem of deformation uniformity in the high-temperature brazing process of the product by adopting a fixing mode that one end is fixed and the other end is movable.
(2) According to the invention, through the rotation of the product along with the clamping device in the brazing process, the uniformity of the brazing material diffusion is realized, and the problem of blockage is solved;
(3) According to the invention, through the vacuum system pipeline, the brazing surface is in a vacuum environment in the whole brazing process, and the quality of the brazing joint is ensured;
drawings
FIG. 1 is a schematic diagram of a clamping tool structure;
fig. 2 is a schematic diagram of product loading.
Detailed Description
In order to better understand the technical solutions described above, the following detailed description of the technical solutions of the present application is provided through the accompanying drawings and specific embodiments, and it should be understood that the specific features of the embodiments and embodiments of the present application are detailed descriptions of the technical solutions of the present application, and not limit the technical solutions of the present application, and the technical features of the embodiments and embodiments of the present application may be combined with each other without conflict.
The following is a description of a method for clamping brazing in a furnace for a product with a revolving structure provided in the embodiment of the present application in further detail with reference to the accompanying drawings, and a specific implementation manner may include (as shown in fig. 1-2): aiming at the brazing characteristics of the products of the revolving body structure, selecting a product clamping mode, and realizing product brazing connection by a connecting mode that one end is fixedly connected with a main shaft and the other end can freely move; the product rotation in the brazing process ensures the uniformity of the brazing material diffusion flow, and meanwhile, the inner cavity of the product in the brazing process is in a vacuum environment through a vacuum system pipeline, so that high-quality connection of the product is realized.
Fig. 1 is a schematic diagram of a card loading tool for loading and supporting a product.
As shown in fig. 2, a schematic diagram of product loading is shown, and connection between a product and a tool is realized. The specific assembly process method comprises the following steps:
(1) The product is connected with the supporting ring
The first support ring 4 is connected with the small end (fixed port) of the product by adopting a welding method, and the intermittent positioning connection of the circumference is only needed at 4-8 positions; the second support ring 8 is arranged in the large end (sliding end) of the product, and the second support ring and the product are connected and fixed by a connecting sheet 7 by adopting a welding method, and 18-36 parts are uniformly distributed and fixed on the circumference.
(2) Card-loading product
Loading the product connected in the step 1 into a main shaft of a tool, wherein the first support ring 4 at the small end is required to be in contact with the support frame 5 and is not fixed; the second support ring 8 at the large end is in contact with the support disc 9 and is not fixed, while a fixed contact between the second support ring 8 and the support disc 9 is required.
(3) Fixing the small end of the product.
The second connecting pipe 3 is connected with the main shaft in the product and the supporting disk 9 by adopting a welding method, the number of the distributed circumference and the number of the connecting points are determined according to the size and the weight of the product, and the reliable and stable connection of the position is ensured. 4 to 6 parts are uniformly distributed on the common circumference.
(4) And is connected with a vacuum pipeline.
The first connecting pipe 2 is connected with the vacuum pipeline inlet on the main shaft of the product and the support 9 by adopting a welding method, and the vacuum pipeline inlet is symmetrically distributed at the position of 2 degrees in a 180-degree mode. Wherein the diameter of the first connecting pipe 2 is determined according to the size of the inner cavity of the product and the vacuumizing speed of the vacuum system. The general tube has an drift diameter of phi 10.
(5) Detection of
The leak detection method or the airtight test method of helium mass spectrum is adopted to detect the tightness of the vacuum system pipeline, and the connection part is required to be compact and has no leakage. Leak rate of common helium mass spectrum leak detection is not more than 1.0x1.0x10 -6 MPa。
(6) Brazing process
The product 6 is loaded into a brazing furnace together with the tooling for furnace brazing.
(7) Disassembling and taking out the product
Cutting off the part of the product connected with the tool by adopting a mechanical cleaning method, and taking out the product; meanwhile, the connection part is polished and cleaned, and the tool can be reused.
In the scheme provided by the embodiment of the application, the clamping tool for brazing in the revolving body structure product furnace comprises a main shaft, a second connecting pipe, a first supporting ring, a fixing frame, a connecting sheet, a second supporting ring and a supporting disc; the fixing frame and the supporting disc are fixedly connected with the main shaft and are not detachable; the second connecting pipe is fixedly connected with the main shaft and the product; the first support ring is connected with the product but not connected with the fixing frame; the second supporting ring is fixedly connected with the product through a connecting sheet, but is not connected with the supporting disc; the first connecting pipe is connected with the product and the main shaft, and meets the requirement of vacuum brazing of an inner cavity interlayer of the product.
Based on the same inventive concept, the clamping method for brazing in the revolving body structure product furnace realized according to the clamping tool for brazing in the revolving body structure product furnace comprises the following steps:
s1, fixedly connecting a second support ring with a product by using a connecting sheet;
s2, loading the product into a main shaft, and connecting the first support ring with the product;
s3, connecting a second connecting pipe to be fixedly connected with the product and the main shaft;
s4, connecting and fixing the first connecting pipe with the product and the main shaft;
s5, feeding the product and the main shaft into a furnace for brazing.
Further, in the step S1, the material of the connecting piece and the second supporting ring should be the same as the material of the outer wall; the maximum fit clearance between the second support ring and the product is not more than 1mm; the thickness of the connecting sheet parent metal is delta 2-delta 3mm, and the connecting sheet parent metal is connected to the thick wall part or the process allowance part of the product; the connecting sheets are distributed around the circumference at intervals of 150-200 mm, and the circumference is uniformly distributed.
In one possible implementation manner, in the step S2, the material of the first supporting ring is the same as that of the product, the assembly gap between the first supporting ring and the fixing frame is not more than 0.2mm, and the fitting gap between the first supporting ring and the product is not more than 0.5mm at maximum; the argon arc welding method is adopted, and 4 to 6 positions are uniformly distributed around the circle.
In one possible implementation manner, in the step S2, after the product is loaded into the tooling, a sufficient axial gap is ensured between the second support ring and the support disc, and the longer the product is in the axial direction, the larger the reserved axial gap is, which is not smaller than 50mm; and Zhou Juanfang, a limiting block is reserved on the supporting disc to limit the rotation of the peripheral ring of the second supporting ring, so that the gap between the two is not more than 1.0mm.
Further, in one possible implementation, in S3, the material of the connecting tube is 1Cr18NI9Ti or the same as the product base material.
In one possible implementation mode, the wall thickness delta of the pipe wall is not smaller than 3mm, 6 parts of the circumference are uniformly distributed, each part is connected by adopting an argon arc welding method, and the welding seam has high structural strength.
Further, in one possible implementation, in S4, the first connection tube material is selected from 1Cr18NI9Ti.
In one possible implementation, the wall thickness δ is not less than 1.0mm.
In one possible implementation, helium mass spectrometry is performed on all connection parts by using a negative pressure method before the product is brazed in a furnace, and the leakage rate is required to be not more than 1.0x10 -6 MPa。
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
It will be apparent to those skilled in the art that various modifications and variations can be made in the present application without departing from the spirit or scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims and the equivalents thereof, the present application is intended to cover such modifications and variations.
What is not described in detail in the present specification is a well known technology to those skilled in the art.
Claims (10)
1. The clamping tool for brazing in the revolving body structure product furnace is characterized by comprising a main shaft (1), a second connecting pipe (3), a first supporting ring (4), a fixing frame (5), a connecting sheet (7), a second supporting ring (8) and a supporting disc (9);
the fixing frame (5) and the supporting disc (9) are fixedly connected with the main shaft (1) and are not detachable;
the second connecting pipe (3) is fixedly connected with the main shaft (1) and the product (6);
the first supporting ring (4) is connected with the product, but is not connected with the fixing frame (5);
the second supporting ring (8) is fixedly connected with the product (6) through a connecting sheet (7) but is not connected with the supporting disc (9);
the first connecting pipe (2) is connected with the product (6) and the main shaft (1), and meets the requirement of vacuum brazing of an inner cavity interlayer of the product (6).
2. The clamping method for brazing in a rotary structure product furnace, which is realized by a clamping tool for brazing in a rotary structure product furnace, according to claim 1, is characterized by comprising the following steps:
s1, fixedly connecting a second supporting ring (8) with a product (6) by using a connecting sheet (7);
s2, loading a product (6) into the main shaft (1) and connecting the first support ring (4) with the product (6);
s3, connecting the second connecting pipe (3), the product (6) and the main shaft (1) to be fixedly connected;
s4, the first connecting pipe (2) is fixedly connected with the product (6) and the main shaft (1);
s5, feeding the product (6) and the main shaft (1) into a furnace for brazing.
3. The method for clamping brazing in a revolving body structure product furnace according to claim 2, wherein in S1, the connecting sheet (7) and the second supporting ring (8) are made of the same material as the outer wall; the maximum fitting clearance between the second supporting ring (8) and the product (6) is not more than 1mm; the thickness of the base material of the connecting sheet (7) is delta 2-delta 3mm, and the connecting sheet is connected to the thick wall part or the process allowance part of the product (6); the connecting sheets (7) are distributed around the circumference at intervals of 150-200 mm, and the circumference is uniformly distributed.
4. The method for clamping brazing in a revolving body structure product furnace according to claim 2, wherein in the step S2, the material of the first supporting ring (4) is the same as that of the product (6), the assembly clearance with the fixing frame (5) is not more than 0.2mm, and the fitting clearance with the product (6) is not more than 0.5mm at the maximum; the argon arc welding method is adopted, and 4 to 6 positions are uniformly distributed around the circle.
5. The method for clamping brazing in a revolving body structure product furnace according to claim 2, wherein in the step S2, after the product (6) is installed in the tool, sufficient axial clearance is ensured between the second support ring (8) and the support disc (9), and the longer the product (6) is in the axial direction, the larger the reserved axial clearance is, and is not smaller than 50mm; in the circumferential direction, a limiting block is reserved on the supporting disc (9) to limit the circumferential rotation of the second supporting ring (8), so that the gap between the two is not more than 1.0mm.
6. The method for clamping brazing in a furnace for products in a revolving structure according to claim 2, wherein in S3, the connecting pipe material is 1Cr18NI9Ti or the same as the product base material.
7. The method for clamping brazing in a revolving body structure product furnace according to claim 6, wherein the wall thickness delta of the pipe wall is not less than 3mm, the positions of 6 circles are uniformly distributed, each position is connected by adopting an argon arc welding method, and the welding seam structure is high in strength.
8. The method for clamping brazing in a furnace for products in a revolving structure according to claim 2, wherein in S4, the material of the first connecting tube (2) is 1Cr18NI9Ti.
9. The method for clamping brazing in a furnace for producing a rotary structure according to claim 8, wherein the wall thickness delta of the pipe wall is not less than 1.0mm.
10. The method for clamping a product (6) for furnace brazing of a solid of revolution according to claim 2, wherein the product (6) is subjected to helium mass spectrometry at all the connection parts by a negative pressure method before being subjected to furnace brazing, and the required leak rate is not more than 1.0x10 - 6 MPa。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211706492.7A CN116252018A (en) | 2022-12-29 | 2022-12-29 | Clamping method for brazing in revolving body structure product furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211706492.7A CN116252018A (en) | 2022-12-29 | 2022-12-29 | Clamping method for brazing in revolving body structure product furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116252018A true CN116252018A (en) | 2023-06-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211706492.7A Pending CN116252018A (en) | 2022-12-29 | 2022-12-29 | Clamping method for brazing in revolving body structure product furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116252018A (en) |
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2022
- 2022-12-29 CN CN202211706492.7A patent/CN116252018A/en active Pending
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