CN114178693A - Seamless welding process for stainless steel pipe - Google Patents
Seamless welding process for stainless steel pipe Download PDFInfo
- Publication number
- CN114178693A CN114178693A CN202210006186.6A CN202210006186A CN114178693A CN 114178693 A CN114178693 A CN 114178693A CN 202210006186 A CN202210006186 A CN 202210006186A CN 114178693 A CN114178693 A CN 114178693A
- Authority
- CN
- China
- Prior art keywords
- pipe
- stainless steel
- main body
- welding
- steel tube
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/20—Bonding
- B23K26/21—Bonding by welding
-
- 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
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/70—Auxiliary operations or equipment
- B23K26/702—Auxiliary equipment
-
- 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
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/04—Tubular or hollow articles
- B23K2101/06—Tubes
Abstract
The invention provides a seamless welding process for a stainless steel pipe, and belongs to the field of metal processing. The connecting piece is connected with the two side pipes, the connecting piece is sleeved on the screwed pipe, welding is carried out between the connecting piece and the side pipes, laser welding is adopted, the positions of the ultrasonic water meter and each die piece of the heat meter pipe section are more accurate through the laser seamless welding technology, and the surface of the pipe section is smoother. The transmission lines of the ultrasonic signals are guaranteed to be accurate and consistent.
Description
Technical Field
The invention provides a seamless welding process for a stainless steel pipe, and belongs to the field of metal processing.
Background
At present, a laser welding technology is a comprehensive technology integrating a laser technology, a welding technology, an automation technology, a material technology, a mechanical manufacturing technology and product design, for example, a washing machine applies the laser seamless welding technology to a new uniform power washing machine, and the generation of gaps and unevenness of an inner barrel is avoided, so that the reliability of the product is improved, and the rotating speed and the dehydration rate are improved.
Although argon arc among the prior art welds by often practical but inefficiency, two guarantor weld efficient but weld the face of weld coarse, electric welding just of no mention, splash big and the effect is poor.
The existing laser welding is easy to weld through the special-shaped stainless steel pipe, and the sealing property is influenced.
Disclosure of Invention
The invention provides a seamless welding process for stainless steel pipes, which is characterized in that the stainless steel pipes are integrally welded by laser welding, so that the connection strength and the sealing performance are improved. Simple structure and convenient use.
The invention relates to a stainless steel tube structure aiming at a seamless welding process of a stainless steel tube, which comprises a main tube, end connecting threads, side tubes, a connecting sheet and a threaded tube, wherein the end connecting threads are correspondingly arranged at two ends of the main tube;
the seamless welding process for the stainless steel pipe comprises the following steps:
the method comprises the following steps: cutting a stainless steel pipe, flattening two ends of the stainless steel pipe, reserving an outer chamfer, pre-drilling a hole in the side wall of the stainless steel pipe, and removing burrs to obtain a main pipe;
connecting the intercepting end with a threaded blank, processing external threads, intercepting a stainless steel pipe, and respectively processing and preparing a threaded pipe and a side pipe, wherein the lower end of the side pipe is provided with an intersecting line attached to the main pipe, the top end face of the side pipe is provided with a counter bore, the bottom of the threaded pipe is provided with an intersecting line corresponding to the main pipe, and the mouth part of the threaded pipe is provided with internal threads;
step two: horizontally clamping and fixing the main body pipe, correspondingly attaching the side pipe and the threaded pipe to the main body pipe, pressing by using a press machine to attach intersecting lines, then welding by using a laser nozzle, and correspondingly welding and sealing the side pipe, the threaded pipe and the main body pipe;
step three: vertically placing and fixing the main body pipe, correspondingly placing the end connecting threads at the end part of the main body pipe, welding through a laser nozzle, and welding and fixing the end connecting threads at one end of the main body pipe;
step four: turning the main pipe for 180 degrees, and welding the connecting thread at the other end;
step five: clamping and fixing the connecting sheet, and fixedly arranging the connecting sheet between the side pipes through spot welding;
in the second step, the intersecting line is welded into four sections, and the peak and valley points of the intersecting line are divided and welded one by one;
the laser nozzle welding is a laser welding machine, and the parameters of the laser welding machine are adjusted as follows:
when the wall thickness of the welding main body is smaller than 3.0mm, adjusting the current post-heating current of the laser welding machine to 109-111A;
when the wall thickness of the current main body to be welded is [3.0, 4.0mm ], selecting 119-121A for the heating current of the laser welding machine;
when the wall thickness of the current main body to be welded is [4.0mm,5.0mm ], selecting 129-131A for the heating current of the laser welding machine;
and when the wall thickness of the current main body to be welded is larger than or equal to 5.0mm, selecting 139-141A of heating current of the laser welding machine.
Has the advantages that:
firstly, the positions of all mould parts of the ultrasonic water meter and heat meter pipe sections are more accurate and the pipe section surfaces are more accurate through a laser seamless welding technology
And (4) smoothing. The transmission routes of the ultrasonic signals are ensured to be accurate and consistent;
secondly, the flow velocity of water flow in the measuring pipe is improved, the detection resolution is enhanced, and the measurement precision of the instrument is improved;
thirdly, the structure is simple and the use is convenient.
Drawings
FIG. 1 is a three-dimensional structure diagram of a seamless welding process for stainless steel pipes according to the present invention.
In the drawings:
1. a main body tube; 2. the end is connected with a thread; 3. a side tube; 4. connecting sheets; 5. a threaded pipe.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
According to the illustration of FIG. 1: the invention relates to a stainless steel tube structure aiming at a seamless welding process of a stainless steel tube, which comprises a main tube 1, end connecting threads 2, side tubes 3, a connecting sheet 4 and a threaded tube 5, wherein the end connecting threads 2 are correspondingly arranged at two ends of the main tube 1, one side of the main tube 1 is provided with a communicating hole, the side tubes 3 and the threaded tube 5 are correspondingly arranged at one side of the main tube 1 and correspond to the communicating hole, the connecting sheet 4 is connected with the two side tubes 3 and sleeved on the threaded tube 5, and the connecting sheet 4 and the side tubes 3 are welded;
the seamless welding process for the stainless steel pipe comprises the following steps:
the method comprises the following steps: cutting a stainless steel pipe, flattening two ends of the stainless steel pipe, reserving an outer chamfer, pre-drilling a hole in the side wall of the stainless steel pipe, and removing burrs to obtain a main body pipe 1;
cutting an end connecting thread 2 blank, processing external threads, cutting a stainless steel pipe, respectively processing and preparing a threaded pipe 5 and a side pipe 3, wherein the lower end of the side pipe 3 is provided with an intersecting line attached to the main pipe 1, the top end face of the side pipe 3 is provided with a counter bore, the bottom of the threaded pipe 5 is provided with an intersecting line corresponding to the main pipe 1, and the opening of the threaded pipe 5 is provided with internal threads;
step two: horizontally clamping and fixing the main body pipe 1, correspondingly attaching the side pipe 3 and the threaded pipe 5 on the main body pipe 1, pressing by using a press machine to attach intersecting lines, then welding by using a laser nozzle, and correspondingly welding and sealing the side pipe 3, the threaded pipe 5 and the main body pipe 1;
step three: vertically placing and fixing a main body pipe 1, correspondingly placing an end connecting thread 2 at the end part of the main body pipe 1, welding through a laser nozzle, and welding and fixing the end connecting thread 2 at one end of the main body pipe 1;
step four: turning the main pipe 1 for 180 degrees, and welding the connecting thread 2 at the other end;
step five: clamping and fixing the connecting sheet 4, and fixedly placing the connecting sheet between the side pipes 3 through spot welding to obtain a stainless steel pipe;
in the second step, the intersecting line is welded into four sections, and the peak and valley points of the intersecting line are divided and welded one by one;
the laser nozzle welding is a laser welding machine, and the parameters of the laser welding machine are adjusted as follows:
when the wall thickness of the welding main body is less than 3.0mm, 109-111A of heating current of the laser welding machine is selected;
when the wall thickness of the current main body to be welded is [3.0, 4.0mm ], selecting 119-121A for the heating current of the laser welding machine;
when the wall thickness of the current main body to be welded is [4.0mm,5.0mm ], selecting 129-131A for the heating current of the laser welding machine;
when the wall thickness of the current main body to be welded is larger than or equal to 5.0mm, 139-141A of heating current of the laser welding machine is selected;
the wall thickness of the side pipe 3 is 4-5mm, the wall thickness of the main body pipe 1 is less than 3mm, and the wall thickness of the end connecting thread 2 is greater than 5 mm.
The present invention and its embodiments have been described above, and the description is not intended to be limiting, and the drawings are only one embodiment of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiments as a basis for designing or modifying other structures for carrying out the same purposes of the present invention without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (7)
1. A seamless welding process for stainless steel pipes is characterized in that: the steps are as follows
The method comprises the following steps: cutting a stainless steel pipe, flattening two ends of the stainless steel pipe, reserving an outer chamfer, pre-drilling a hole in the side wall of the stainless steel pipe, and removing burrs to obtain a main pipe (1);
cutting a blank of the connecting thread (2) at the cutting end, processing an external thread, cutting a stainless steel pipe, respectively processing and preparing a threaded pipe (5) and a side pipe (3), wherein the lower end of the side pipe (3) is provided with an intersecting line attached to the main pipe (1), the top end face of the side pipe (3) is provided with a counter bore, the bottom of the threaded pipe (5) is provided with an intersecting line corresponding to the main pipe (1), and the opening part of the threaded pipe (5) is provided with an internal thread;
step two: horizontally clamping and fixing the main body pipe (1), correspondingly attaching the side pipe (3) and the threaded pipe (5) to the main body pipe (1), pressing by using a press machine to attach intersecting lines, then welding by using a laser nozzle, and correspondingly welding and sealing the side pipe (3), the threaded pipe (5) and the main body pipe (1);
step three: vertically placing and fixing the main body pipe (1), correspondingly placing the end connecting thread (2) at the end part of the main body pipe (1), welding through a laser nozzle, and welding and fixing the end connecting thread (2) at one end of the main body pipe (1);
step four: the main body pipe (1) is turned over by 180 degrees, and the connecting thread (2) at the other end is welded;
step five: and clamping and fixing the connecting sheets (4), and fixedly placing the connecting sheets between the side pipes (3) through spot welding to obtain the stainless steel pipe.
2. The seamless welding process of the stainless steel tube according to claim 1, characterized in that: in the second step, the welding of the intersecting lines is divided into four sections, and the peak and valley points of the intersecting lines are divided to be welded one by one.
3. The seamless welding process of the stainless steel tube according to claim 1, characterized in that: the laser nozzle welding is a laser welding machine, and the parameters of the laser welding machine are adjusted as follows:
when the wall thickness of the welding main body is less than 3.0mm, 109-111A of heating current of the laser welding machine is selected;
when the wall thickness of the current main body to be welded is [3.0, 4.0mm ], selecting 119-121A for heating current of the laser welding machine;
when the wall thickness of the current main body to be welded is [4.0mm,5.0mm ], selecting 129-131A for heating current of the laser welding machine;
and when the wall thickness of the current main body to be welded is larger than or equal to 5.0mm, selecting 139-141A of heating current of the laser welding machine.
4. The stainless steel tube obtained by the seamless welding process of the stainless steel tube according to claim 1, wherein: the stainless steel tube structure comprises a main tube (1), end connecting threads (2), side tubes (3), connecting pieces (4) and threaded tubes (5), wherein the end connecting threads (2) are correspondingly arranged at two ends of the main tube (1), communication holes are formed in one side of the main tube (1), the side tubes (3) and the threaded tubes (5) are correspondingly arranged on one side of the main tube (1) and correspond to the communication holes, the connecting pieces (4) are connected with the two side tubes (3) and sleeved on the threaded tubes (5), and the connecting pieces (4) and the side tubes (3) are welded.
5. The stainless steel tube obtained by the seamless welding process of the stainless steel tube according to claim 4, wherein: the wall thickness of the side pipe (3) is 4-5 mm.
6. The stainless steel tube obtained by the seamless welding process of the stainless steel tube according to claim 4, wherein: the wall thickness of the main body pipe (1) is less than 3 mm.
7. The stainless steel tube obtained by the seamless welding process of the stainless steel tube according to claim 4, wherein: the wall thickness of the end connecting thread (2) is more than 5 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210006186.6A CN114178693A (en) | 2022-01-05 | 2022-01-05 | Seamless welding process for stainless steel pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210006186.6A CN114178693A (en) | 2022-01-05 | 2022-01-05 | Seamless welding process for stainless steel pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114178693A true CN114178693A (en) | 2022-03-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210006186.6A Pending CN114178693A (en) | 2022-01-05 | 2022-01-05 | Seamless welding process for stainless steel pipe |
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| CN (1) | CN114178693A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1060929A (en) * | 1990-09-17 | 1992-05-06 | 株式会社日立制作所 | Its manufacture method of structure and equipment with canister of the person in charge and arm |
| CN101042251A (en) * | 2007-04-13 | 2007-09-26 | 谢振江 | Method for making arrangement type rustless steel water separator |
| CN112122872A (en) * | 2020-09-26 | 2020-12-25 | 沈永松 | Automatic alignment welding device for intersecting line welding seam |
| CN112857496A (en) * | 2021-01-21 | 2021-05-28 | 玉环市展帆机械有限公司 | Meter pipe for ultrasonic water meter and production process thereof |
| CN213748589U (en) * | 2020-12-22 | 2021-07-20 | 宁波金海仪表有限公司 | Transducer mounting structure of ultrasonic water meter |
| CN215003766U (en) * | 2021-03-09 | 2021-12-03 | 三川智慧科技股份有限公司 | Thin-wall stainless steel ultrasonic water meter shell |
| CN215217710U (en) * | 2021-07-21 | 2021-12-17 | 山东潍微科技股份有限公司 | Novel small-diameter ultrasonic water meter base meter structure |
-
2022
- 2022-01-05 CN CN202210006186.6A patent/CN114178693A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1060929A (en) * | 1990-09-17 | 1992-05-06 | 株式会社日立制作所 | Its manufacture method of structure and equipment with canister of the person in charge and arm |
| CN101042251A (en) * | 2007-04-13 | 2007-09-26 | 谢振江 | Method for making arrangement type rustless steel water separator |
| CN112122872A (en) * | 2020-09-26 | 2020-12-25 | 沈永松 | Automatic alignment welding device for intersecting line welding seam |
| CN213748589U (en) * | 2020-12-22 | 2021-07-20 | 宁波金海仪表有限公司 | Transducer mounting structure of ultrasonic water meter |
| CN112857496A (en) * | 2021-01-21 | 2021-05-28 | 玉环市展帆机械有限公司 | Meter pipe for ultrasonic water meter and production process thereof |
| CN215003766U (en) * | 2021-03-09 | 2021-12-03 | 三川智慧科技股份有限公司 | Thin-wall stainless steel ultrasonic water meter shell |
| CN215217710U (en) * | 2021-07-21 | 2021-12-17 | 山东潍微科技股份有限公司 | Novel small-diameter ultrasonic water meter base meter structure |
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