CN111761251A - Built-in welding flux type pipe fitting and welding process - Google Patents
Built-in welding flux type pipe fitting and welding process Download PDFInfo
- Publication number
- CN111761251A CN111761251A CN202010768562.6A CN202010768562A CN111761251A CN 111761251 A CN111761251 A CN 111761251A CN 202010768562 A CN202010768562 A CN 202010768562A CN 111761251 A CN111761251 A CN 111761251A
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- Prior art keywords
- pipe fitting
- solder
- welding
- annular groove
- pipe
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Classifications
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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
- B23K33/00—Specially-profiled edge portions of workpieces for making soldering or welding connections; Filling the seams formed thereby
-
- 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
-
- 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
- B23K1/14—Soldering, e.g. brazing, or unsoldering specially adapted for soldering seams
- B23K1/18—Soldering, e.g. brazing, or unsoldering specially adapted for soldering seams circumferential seams, e.g. of shells
-
- 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
- B23K33/00—Specially-profiled edge portions of workpieces for making soldering or welding connections; Filling the seams formed thereby
- B23K33/004—Filling of continuous seams
- B23K33/006—Filling of continuous seams for cylindrical workpieces
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Non-Disconnectible Joints And Screw-Threaded Joints (AREA)
Abstract
The invention relates to a built-in welding flux type pipe fitting, which comprises a to-be-connected part, a welding flux type pipe fitting and a welding flux type connecting piece, wherein the to-be-connected part comprises a first pipe fitting and a second pipe fitting; connecting portion, it includes the interior portion of stretching that first pipe fitting and second pipe fitting alternate the coincidence, be provided with the ring channel that is used for installing the solder on the interior portion of stretching, the ring channel sets up on the second pipe fitting, is the indent structure, the ring channel sets up on first pipe fitting, is the evagination structure, first pipe fitting and second pipe fitting are connected in the solder contact, the coincidence portion of first pipe fitting and second pipe fitting is located to the solder cover, including following step: step S1: the solder is filled into the annular groove in advance; step S2: heating by using a heater, filling gaps contacted by the pipe fittings after the solder is melted, wherein the step S1 comprises the steps of filling the solder into grooves and filling, the solder is silver solder and phosphor copper solder, and the heater is a high-frequency heater; the invention has the advantages of ensuring the penetration depth and firmness of welding, ensuring the construction safety and reducing the welding difficulty.
Description
Technical Field
The invention belongs to the technical field of pipe fitting welding, and particularly relates to an embedded solder type pipe fitting and a welding process.
Background
At present, the domestic welding mode of the copper tube still adopts open fire heating welding (as shown in figure 6), and the biggest defect of the mode is that: 1. welding penetration is uneven, welding is not firm, 2, air holes are formed after welding, insufficient welding is easy to leak (as shown in figure 7), 3, liquefied gas is used on site, the risk of open fire construction is high, 4, the technical requirement of operators is very high, and the market popularization difficulty is high; a disclosure material of a welding assembly method of an upper cover of an air conditioner compressor, which is a patent number cn201510789633.x, publication No. 2017.09.15, entitled, is retrieved, and in the disclosure material, a welding assembly method of an upper cover of an air conditioner compressor is described, which includes the following steps: the welding end of the exhaust pipe is inserted into the mounting hole of the upper cover, and a welding gap is formed between the welding end and the upper cover; filling welding flux into the welding gap; and welding by adopting a high-frequency welding mode. The invention adopts a high-frequency induction welding mode to heat and weld the welding seam, and has simple implementation and convenient processing operation; the size of the welding seam is reasonably controlled, the permeability of the welding flux is uniform, the quality of the welded welding flux is stable, and the cost is low; as can be seen from an analysis of the disclosed material, although it is described that the penetration of the solder is uniform and the quality after soldering is stable in the advantageous effects, it is understood from an analysis of the structure, the soldering gap, and the like disclosed in the patent that the expected effects cannot be achieved, first, the structure is designed such that the outflow effect occurs naturally after the solder is melted, and the outflow solder flows out of the soldering gap because there is no gap to give a path for the flow, resulting in the soldering quality not achieving the effects described in the advantageous effects; aiming at the defects, the embedded welding flux type pipe fitting and the welding process which can ensure the penetration depth and firmness of welding, ensure the construction safety and reduce the welding difficulty need to be developed.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide the built-in welding flux type pipe fitting and the welding process which can ensure the penetration depth and firmness of welding, ensure the construction safety and reduce the welding difficulty.
The purpose of the invention is realized as follows: built-in solder formula pipe fitting, its characterized in that: comprises that
A to-be-connected member including a first pipe member and a second pipe member;
the connecting part comprises an inward extending part, wherein the inward extending part is formed by inserting and overlapping the first pipe fitting and the second pipe fitting, one section of the inward extending part is deformed through outward or inward protrusion to form an annular groove, and the annular groove is positioned between the inner side surface of the inward extending part and the pipe fitting which is not deformed and used for placing welding flux.
The annular groove is arranged on the second pipe fitting and is of an inwards concave structure.
The annular groove is arranged on the first pipe fitting and is of a convex structure.
The solder contact connects the first tube member and the second tube member.
The solder is sleeved on the superposition part of the first pipe fitting and the second pipe fitting.
The method comprises the following steps:
step S1: the solder is filled into the annular groove in advance;
step S2: the first pipe fitting and the second pipe fitting are connected in an inserting connection mode, after the first pipe fitting and the second pipe fitting are connected in an inserting mode, the size of a gap is 0.03-0.08mm, and the gap is used for ensuring that the molten solder flows uniformly during welding;
step S3: and heating the annular groove by a heater at 700-850 ℃, and filling a gap contacted by the pipe fitting after the solder is melted.
And in the step S1, the solder is filled into grooves and filled, and a ring installing machine is adopted for filling.
The solder is silver solder and phosphor copper solder.
The heater is a high-frequency heater.
The invention has the beneficial effects that: the invention has the advantages that the defects of the traditional welding mode of external open fire welding and internal filling of the solder are overcome, and the contribution is made particularly on the aspect of flow uniformity of the melted solder, so that the flow uniformity of the melted solder is better; the welding device has the advantages that the welding device is heated to the inner welding flux through external electricity to be naturally molten (such as figures 8 and 9), penetration depth and firmness of welding (such as figure 10) are guaranteed, safety of field construction is guaranteed, welding difficulty is greatly reduced, requirements of rapid installation and rapid welding are met, operation of people can be really achieved, and other beneficial effects are detailed in specific embodiments.
Drawings
FIG. 1 is a front view of the solder-inlaid pipe article of the present invention.
Fig. 2 is a right side view of fig. 1.
Fig. 3 is a cross-sectional view taken along a-a in fig. 2.
Fig. 4 is another embodiment of the second tube member.
Fig. 5 is a perspective view of fig. 4.
Fig. 6 is a schematic diagram of a solder-inlaid tube and the old process of the soldering process.
Fig. 7 is a schematic view of the welded connection of fig. 6.
Fig. 8 is a schematic view of the solder-embedded pipe and the structure after the solder is installed in the welding process of the present invention.
Fig. 9 is a partially enlarged view of fig. 8.
Fig. 10 is a schematic view of using a high-frequency heater.
In the figure: 1. the pipe fitting comprises a first pipe fitting 2, a second pipe fitting 3, an inner extension 4, solder 5 and an annular groove.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work based on the embodiments of the present invention belong to the protection scope of the present invention.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, and the terms used herein are for the purpose of describing particular embodiments only and are not intended to be limiting of the invention, and terms such as "and/or" as used herein include any and all combinations of one or more of the associated listed items; in addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Example 1
As shown in fig. 1-3, the pipe fitting with solder embedded therein comprises
A to-be-connected member including a first pipe member and a second pipe member;
the connecting part comprises an inward extending part, wherein the inward extending part is formed by inserting and overlapping the first pipe fitting and the second pipe fitting, one section of the inward extending part is deformed through outward or inward protrusion to form an annular groove, and the annular groove is positioned between the inner side surface of the inward extending part and the pipe fitting which is not deformed and used for placing welding flux.
In this embodiment, the inward extension portion is a portion where the first pipe and the second pipe are inserted and overlapped, if the first pipe is on the outside, the inward extension portion is a portion on the second pipe, if the second pipe is on the outside, the inward extension portion is a portion on the first pipe, the inward extension portion is provided with an annular groove, the annular groove is formed such that the inward extension portion protrudes outward or inward, for example, the inward extension portion is on the outside, the annular groove is formed such that the inward extension portion protrudes outward, and if the inward extension portion is on the inside, the annular groove is formed such that the inward extension portion protrudes inward; through set up the solder at the ring channel inner chamber, use welder to heat the solder and melt, the solder after melting can be fixed and sealed between connector and the pipeline, can effectively improve firm in connection degree and leakproofness, the solder in the ring channel is packed into through adorning on the ring machine, then after the throat on the ring machine is adorned, the solder cover is in the ring channel, avoid taking place to drop, this kind of condition goes on under the condition that the solder made into the welding ring in advance, in addition, the solder also can be for likepowder or paste, can send into likepowder or pasty solder into in the ring channel in advance.
Example 2
The annular groove is arranged on the second pipe fitting and is of an inwards concave structure.
As shown in fig. 3, if the annular groove is formed on the second pipe, the annular groove needs to be recessed, and solder can be placed in the recessed annular groove.
Example 3
The annular groove is arranged on the first pipe fitting and is of a convex structure.
In this embodiment, if the annular groove is on the first tube member, the annular groove is required to be convex, and solder can be placed in the convex annular groove, as shown in fig. 4.
Example 4
As shown in fig. 3, the solder contact connects the first and second tube members.
In this embodiment, the solder is placed in the annular groove and then contacts both the first pipe and the second pipe, preferably in a transitional connection.
Example 5
The solder is sleeved on the superposition part of the first pipe fitting and the second pipe fitting.
As shown in fig. 3, in the embodiment, the solder sleeves are disposed at the overlapping portion of the first tube and the second tube, so that the first tube and the second tube can be welded together after being melted.
Example 6
The method comprises the following steps:
step S1: the solder is filled into the annular groove in advance;
step S2: the first pipe fitting and the second pipe fitting are connected in an inserting connection mode, after the first pipe fitting and the second pipe fitting are connected in an inserting mode, the size of a gap is 0.03-0.08mm, and the gap is used for ensuring that the molten solder flows uniformly during welding.
Step S3: and heating the annular groove by a heater at 700-850 ℃, and filling a gap contacted by the pipe fitting after the solder is melted.
As shown in fig. 8-10, the whole welding process is described in this embodiment, a groove is formed on the first tube or the second tube, and a ring groove is formed after the groove is formed, specifically, whether the groove is formed on the first tube or the second tube, as described in embodiment 1, then solder is installed in the ring groove, after the solder installation is completed, another tube is inserted (the tube herein determines the first tube or the second tube according to the installation condition), the size of the gap formed by the two tubes before the manufacture and after the insertion is maintained in terms of the size of the inner and outer diameters, is between 0.03mm and 0.08mm, preferably between 0.03mm and 0.04mm, 0.04mm and 0.0499mm, 0.05mm, and 0.05mm and 0.08 mm; wherein the gaps of 0.03mm-0.04mm, 0.04mm and 0.04-0.0499mm are uniform and optimal; the heating temperature is 700-850 ℃, wherein 700-749 ℃, 750 ℃ and 750-850 ℃ are respectively selected as the heating temperature, and experiments show that 700-749 ℃ is the optimal heating temperature range; under the above optimal gap and optimal temperature range, the molten solder can completely fill the gap by heating, the welding depth is in the range of 15-18mm, and if the temperature is too high or the gap is too large, the molten solder will flow out of the gap, and the appearance and quality are obviously reduced compared with the welding completely filling the gap, as shown in fig. 10.
The following table is the experimental data:
experimental data show that: the gap in the table above is the size of the gap between the first and second tube members (shown in the left vertical row), the fill level is the percentage of the molten solder to the total gap (shown in the middle zone), and the temperature is the temperature provided by the heater (shown in the upper horizontal row).
Example 7
And in the step S1, the solder is filled into grooves and filled, and a ring installing machine is adopted for filling.
As shown in fig. 8, in the process of filling solder in this embodiment, a grooving operation needs to be performed on the pipe, that is, an annular groove is made for subsequently placing solder, and then the solder is filled into the grooving by a filling machine.
Example 8
The solder is silver solder and phosphor copper solder.
As shown in fig. 8, the solder in the present embodiment is preferably silver solder or phosphor copper solder.
Example 9
The heater is a high-frequency heater.
As shown in fig. 9, in the embodiment, the high-frequency heating machine is selected as the heating machine, and the high-frequency heating machine is a high-frequency heating machine with a handheld gun, so that the welding difficulty is greatly reduced, the single and convenient operation room is really realized, and the operation can be performed by people.
The present invention is further described in the detailed description, rather than by limitation, and it will be apparent to those skilled in the art that numerous changes in structure may be made without departing from the spirit and scope of the invention, all of which are intended to be covered by the appended claims.
Claims (9)
1. Built-in solder formula pipe fitting, its characterized in that: comprises that
A to-be-connected member including a first pipe member and a second pipe member;
the connecting part comprises an inward extending part, wherein the inward extending part is formed by inserting and overlapping the first pipe fitting and the second pipe fitting, one section of the inward extending part is deformed through outward or inward protrusion to form an annular groove, and the annular groove is positioned between the inner side surface of the inward extending part and the pipe fitting which is not deformed and used for placing welding flux.
2. The solder-inlaid pipe fitting according to claim 1, wherein: the annular groove is arranged on the second pipe fitting and is of an inwards concave structure.
3. The solder-inlaid pipe fitting according to claim 1, wherein: the annular groove is arranged on the first pipe fitting and is of a convex structure.
4. The solder-inlaid pipe fitting according to claim 1, wherein: the solder contact connects the first tube member and the second tube member.
5. The solder-inlaid pipe fitting according to claim 1, wherein: the solder is sleeved on the superposition part of the first pipe fitting and the second pipe fitting.
6. A soldering process for a solder-inlaid pipe element according to claim 1, wherein: the method comprises the following steps:
step S1: the solder is filled into the annular groove in advance;
step S2: the first pipe fitting and the second pipe fitting are connected in an inserting connection mode, after the first pipe fitting and the second pipe fitting are connected in an inserting mode, the size of a gap is 0.03-0.08mm, and the gap is used for ensuring that the molten solder flows uniformly during welding;
step S3: and heating the annular groove by a heater at 700-850 ℃, filling a gap in which the pipe fittings contact after the solder melts, and controlling the welding depth to be 15-18 mm.
7. The welding process of the solder-inlaid type pipe fitting according to claim 6, wherein: and in the step S1, the solder is filled into grooves and filled, and a ring installing machine is adopted for filling.
8. The welding process of the solder-inlaid type pipe fitting according to claim 6 or 7, wherein: the solder is silver solder and phosphor copper solder.
9. The welding process of the solder-inlaid type pipe fitting according to claim 6, wherein: the heater is a high-frequency heater.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010768562.6A CN111761251A (en) | 2020-08-03 | 2020-08-03 | Built-in welding flux type pipe fitting and welding process |
| PCT/CN2021/107082 WO2022028240A1 (en) | 2020-08-03 | 2021-07-19 | Internally inlaid solder-type pipe fitting and welding process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010768562.6A CN111761251A (en) | 2020-08-03 | 2020-08-03 | Built-in welding flux type pipe fitting and welding process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111761251A true CN111761251A (en) | 2020-10-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010768562.6A Pending CN111761251A (en) | 2020-08-03 | 2020-08-03 | Built-in welding flux type pipe fitting and welding process |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN111761251A (en) |
| WO (1) | WO2022028240A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113070596A (en) * | 2021-01-08 | 2021-07-06 | 丘永梅 | Steel pipe embedded type bidirectional welding process |
| WO2022028240A1 (en) * | 2020-08-03 | 2022-02-10 | 新乡市丰鑫金属制品有限公司 | Internally inlaid solder-type pipe fitting and welding process |
| CN115415645A (en) * | 2022-10-09 | 2022-12-02 | 江西嘉拓智能设备有限公司 | Small-space wire-filling automatic argon arc welding process |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006088161A (en) * | 2004-09-21 | 2006-04-06 | Sumitomo Chemical Co Ltd | Joined structure of pipes |
| CN103551692B (en) * | 2013-10-18 | 2016-07-06 | 沈阳黎明航空发动机(集团)有限责任公司 | A kind of elongated embedded sleeve pipe pipe end method for welding |
| CN103624354B (en) * | 2013-12-12 | 2016-02-03 | 西北有色金属研究院 | The plug-in type welding method of a kind of metal compaction pipe and metal perforated pipe |
| CN107838511A (en) * | 2017-10-09 | 2018-03-27 | 曹银生 | A kind of copper pipe fast-connection pipeline and its Joining Technology |
| CN213003395U (en) * | 2020-08-03 | 2021-04-20 | 新乡市丰鑫金属制品有限公司 | Built-in welding flux type pipe fitting |
| CN111761251A (en) * | 2020-08-03 | 2020-10-13 | 新乡市丰鑫金属制品有限公司 | Built-in welding flux type pipe fitting and welding process |
-
2020
- 2020-08-03 CN CN202010768562.6A patent/CN111761251A/en active Pending
-
2021
- 2021-07-19 WO PCT/CN2021/107082 patent/WO2022028240A1/en active Application Filing
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022028240A1 (en) * | 2020-08-03 | 2022-02-10 | 新乡市丰鑫金属制品有限公司 | Internally inlaid solder-type pipe fitting and welding process |
| CN113070596A (en) * | 2021-01-08 | 2021-07-06 | 丘永梅 | Steel pipe embedded type bidirectional welding process |
| CN113070596B (en) * | 2021-01-08 | 2022-06-03 | 河北方泉管道装备有限公司 | Steel pipe embedded type bidirectional welding process |
| CN115415645A (en) * | 2022-10-09 | 2022-12-02 | 江西嘉拓智能设备有限公司 | Small-space wire-filling automatic argon arc welding process |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022028240A1 (en) | 2022-02-10 |
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