CN114083240B - Welding method for two-body conductive block - Google Patents
Welding method for two-body conductive block Download PDFInfo
- Publication number
- CN114083240B CN114083240B CN202111427679.9A CN202111427679A CN114083240B CN 114083240 B CN114083240 B CN 114083240B CN 202111427679 A CN202111427679 A CN 202111427679A CN 114083240 B CN114083240 B CN 114083240B
- Authority
- CN
- China
- Prior art keywords
- conductive block
- connecting end
- diameter
- welding
- phi
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- 238000003466 welding Methods 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 title claims abstract description 9
- 239000000463 material Substances 0.000 claims abstract description 23
- 230000004907 flux Effects 0.000 claims abstract description 15
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000010949 copper Substances 0.000 claims abstract description 13
- 229910052802 copper Inorganic materials 0.000 claims abstract description 13
- 238000005553 drilling Methods 0.000 claims abstract description 13
- 229910000906 Bronze Inorganic materials 0.000 claims abstract description 10
- 229910052790 beryllium Inorganic materials 0.000 claims abstract description 10
- ATBAMAFKBVZNFJ-UHFFFAOYSA-N beryllium atom Chemical compound [Be] ATBAMAFKBVZNFJ-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000010974 bronze Substances 0.000 claims abstract description 10
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 claims abstract description 10
- 238000005219 brazing Methods 0.000 claims abstract description 9
- 238000003801 milling Methods 0.000 claims abstract description 9
- 238000003754 machining Methods 0.000 claims abstract description 3
- 238000005516 engineering process Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 206010028980 Neoplasm Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
Classifications
-
- 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
Abstract
A welding method of a two-body conductive block comprises the following steps: 1. selecting a beryllium bronze material of phi 11, machining a thread with a certain length and a diameter of M8 at one end of the beryllium bronze material, selecting a material with enough allowance, and milling a flat position with a size of 1.5mm at the thread to obtain a connecting end; 2. selecting a red copper material phi 24, and drilling a threaded hole with a depth of 8mm and a diameter of M8 in the center of the red copper material phi to obtain a conductive block main body; 3. screwing the connecting end obtained in the first step into the conductive block main body obtained in the second step to obtain a conductive block combination; 4. drilling an exhaust hole with the diameter of 2mm on the side surface of the combined connection part of the conductive block obtained in the step three, wherein the drilling depth is 12mm to the central axis of the connection end; then brazing by using a welding flux, enabling the welding flux to flow in from the milling flat side of the connecting end and fully fusing with the conductive block combination, and forming a fixing pin on the conductive block main body and the connecting end after the welding flux enters the exhaust hole; 5. and removing the allowance and the weld flash of the connecting end by using a lathe, turning threads with the diameter of M8 on the rest part of the connecting end, and finally finishing the welding of the two-body conductive block.
Description
Technical Field
The invention relates to a welding method, in particular to a welding method for a two-body conductive block.
Background
A novel high-voltage contactor product is applied to the field of aviation. Therefore, strict requirements are imposed on the size and performance of the parts. Since the conductive block is one of the core devices of the high voltage contactor product, it has a key factor in the aspects of product function and performance. The conductive block is made of two materials, namely red copper and beryllium bronze, and in the technology of the traditional pure red copper conductive block, the torque value of the connecting end of the conductive block is insufficient to meet the requirement of a novel high-voltage contactor product due to the characteristic of good ductility of red copper, so the connecting end is made of the beryllium bronze QBe2 material to meet the requirement of novel maximum torque value development. Because red copper has good heat conductivity, pores are easy to be caused during flame brazing, and the product performance can be directly influenced. In the traditional welding technology, the stability and concentricity of two-body welding are relatively poor, and the welding method is not suitable for the aviation field. In order to solve the problems, the invention relates to a design and application of a two-body conductive block welding technology.
Disclosure of Invention
The invention aims to solve the technical problems that the concentricity and the verticality of the two-body conductive block do not meet the product requirement due to the fact that the two-body conductive block generates hydrogen embrittlement phenomenon to cause gas leakage at a welding position during welding and the conductive block is deformed due to high temperature generated by brazing.
In order to solve the technical problems, the invention adopts the following technical scheme:
a welding method of a two-body conductive block comprises the following steps:
step one: selecting a beryllium bronze material of phi 11, machining a thread with a certain length and a diameter of M8 at one end of the beryllium bronze material, selecting a material with enough allowance, and milling a flat position with a size of 1.5mm at the thread to obtain a connecting end;
step two: selecting a red copper material phi 24, and drilling a threaded hole with a depth of 8mm and a diameter of M8 in the center of the red copper material phi to obtain a conductive block main body;
step three: screwing the connecting end obtained in the first step into the conductive block main body obtained in the second step to obtain a conductive block combination;
step four: drilling an exhaust hole with the diameter of 2mm on the side surface of the combined connection part of the conductive block obtained in the step three, wherein the drilling depth is 12mm to the central axis of the connection end; then brazing by using a welding flux, enabling the welding flux to flow in from the milling flat side of the connecting end and fully fusing with the conductive block combination, and forming a fixing pin on the conductive block main body and the connecting end after the welding flux enters the exhaust hole;
step five: and removing the allowance and the weld flash of the connecting end by using a lathe, turning threads with the diameter of M8 on the rest part of the connecting end, and finally finishing the welding of the two-body conductive block.
The beneficial effects of adopting above-mentioned technical scheme are:
1. the invention solves the problem of complaint by adopting a locking and anti-skid double locking and secondary finishing mode, thereby meeting the design requirement of products.
2. The invention effectively solves the problem of hydrogen embrittlement of red copper during brazing, improves the concentricity problem and the stability problem of the existing two bodies by at least 5% in the two-body welding technology, and has good reliability because the two are direct factors influencing the performance and the service life of the product in the aviation field. In addition, the appearance of the component is almost invisible after removing the welding tumor, and the welding trace has good finish and good performance.
Drawings
FIG. 1 is a schematic view of a connecting end structure of the present invention.
Fig. 2 is a bottom view of fig. 1.
Fig. 3 is a schematic diagram of the main structure of the conductive block according to the present invention.
Fig. 4 is a schematic view of the connection terminal and the conductive block body after being combined.
Fig. 5 is a schematic diagram of the welding of the connection end and the conductive block body.
Fig. 6 is a schematic diagram of the processing of the connection end after welding with the conductive block body.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings:
step one: selecting a beryllium bronze material of phi 11, and then processing a thread with a certain length and a diameter of M8 at one end of the beryllium bronze material, wherein the reason is that the concentricity is easy to deviate when two bodies are welded, the material with enough allowance is selected, the concentricity of the two bodies is ensured in the working procedure after the welding is finished, the material with enough allowance is selected, and in addition, a flat position with the size of 1.5mm is milled at the thread to ensure that the connecting end is not loosened after being screwed into the conductive block main body, thus obtaining the connecting end;
step two: selecting a red copper material phi 24, and drilling a threaded hole with a depth of 8mm and a diameter of M8 in the center of the red copper material phi to obtain a conductive block main body;
step three: screwing the connecting end obtained in the first step into the conductive block main body obtained in the second step to obtain a conductive block combination;
step four: drilling an exhaust hole with the diameter of 2mm on the side surface of the combined connection part of the conductive block obtained in the step three, wherein the drilling depth is 12mm to the central axis of the connection end, and the drilling is used for timely removing redundant bubbles during brazing so as to avoid the phenomenon of air leakage of the conductive block; then brazing is carried out through the welding flux, the welding flux flows in from the milling flat side of the connecting end and is fully fused with the conductive block, after the welding flux enters the exhaust hole, a fixing pin is formed between the conductive block main body and the connecting end to play a role in fixing, and a double loosening and anti-falling connecting structure is formed by milling with the connecting end, so that the welding flux has good reliability; then brazing is carried out through welding flux, the welding flux flows in from the flat milling side of the connecting end and is fully fused with the two conductive blocks;
step five: and removing the allowance and the weld flash of the connecting end by using a lathe, turning threads with the diameter of M8 on the rest part of the connecting end, and finally finishing the welding of the two-body conductive block.
Claims (1)
1. A welding method of a two-body conductive block is characterized in that: it comprises the following steps:
step one: selecting a beryllium bronze material of phi 11, machining a thread with a certain length and a diameter of M8 at one end of the beryllium bronze material, selecting a material with enough allowance, and milling a flat position with a size of 1.5mm at the thread to obtain a connecting end;
step two: selecting a red copper material phi 24, and drilling a threaded hole with a depth of 8mm and a diameter of M8 in the center of the red copper material phi to obtain a conductive block main body;
step three: screwing the connecting end obtained in the first step into the conductive block main body obtained in the second step to obtain a conductive block combination;
step four: drilling an exhaust hole with the diameter of 2mm on the side surface of the combined connection part of the conductive block obtained in the step three, wherein the drilling depth is 12mm to the central axis of the connection end; then brazing by using a welding flux, enabling the welding flux to flow in from the milling flat side of the connecting end and fully fusing with the conductive block combination, and forming a fixing pin on the conductive block main body and the connecting end after the welding flux enters the exhaust hole;
step five: and removing the allowance and the weld flash of the connecting end by using a lathe, turning threads with the diameter of M8 on the rest part of the connecting end, and finally finishing the welding of the two-body conductive block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111427679.9A CN114083240B (en) | 2021-11-29 | 2021-11-29 | Welding method for two-body conductive block |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111427679.9A CN114083240B (en) | 2021-11-29 | 2021-11-29 | Welding method for two-body conductive block |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114083240A CN114083240A (en) | 2022-02-25 |
| CN114083240B true CN114083240B (en) | 2024-03-01 |
Family
ID=80305197
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111427679.9A Active CN114083240B (en) | 2021-11-29 | 2021-11-29 | Welding method for two-body conductive block |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114083240B (en) |
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| CN214350372U (en) * | 2021-02-02 | 2021-10-08 | 杭州祥博传热科技股份有限公司 | Brazed red copper radiator |
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| JPH1085917A (en) * | 1996-09-09 | 1998-04-07 | Honda Motor Co Ltd | Pin as cast |
| JP2000343209A (en) * | 1999-06-03 | 2000-12-12 | Ngk Spark Plug Co Ltd | Production of brazing joined body |
| JP2005353529A (en) * | 2004-06-14 | 2005-12-22 | Fuji Electric Holdings Co Ltd | Manufacturing method for movable contact of electromagnetic contactor |
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| Publication number | Publication date |
|---|---|
| CN114083240A (en) | 2022-02-25 |
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