CN110394574A - A kind of precision parts prevent the technology of deformation in the welding process - Google Patents
A kind of precision parts prevent the technology of deformation in the welding process Download PDFInfo
- Publication number
- CN110394574A CN110394574A CN201910719977.1A CN201910719977A CN110394574A CN 110394574 A CN110394574 A CN 110394574A CN 201910719977 A CN201910719977 A CN 201910719977A CN 110394574 A CN110394574 A CN 110394574A
- Authority
- CN
- China
- Prior art keywords
- welding
- welded
- technology
- precision parts
- thick stick
- Prior art date
- 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.)
- Pending
Links
Classifications
-
- 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
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Arc Welding In General (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
A kind of precision parts prevent the technology of deformation in the welding process, using pretreatment, the welding for localization process, spraying scaling powder, the pre-heat treatment, setting back thick stick, being symmetrically welded, removing back thick stick and rear process of thermal treatment sequence progress pipe fitting, effectively increase the rigidity of welding position, the size of rock-steady structure, reduce the deformation that weld seam generates, fixture is cooperated to act on simultaneously, so that the part shortened after welding is cooling is extended, further correct deformation, the effect that finally ensure that welding, reduces the workload of polishing operation.
Description
Technical field
The present invention relates to the skills that welding technology field more particularly to a kind of precision parts prevent deformation in the welding process
Art.
Background technique
Welding deformation refers to shape, the size that welded piece in welding process is generated by the effect of uneven temperature field
Variation, is problem inevitable in welding process, is especially welded to precision parts, such as in chair framework welding,
Since chair framework is mostly pipe fitting, welding surface is small, and easily in welding, deformation occurs, influences the effect of welding, reduces product
Quality increases the workload of polishing operation.
To solve the above problems, proposing that a kind of precision parts prevent the technology of deformation in the welding process in the application.
Summary of the invention
(1) goal of the invention
To solve technical problem present in background technique, the present invention proposes that a kind of precision parts prevent shape in the welding process
The technology of change, the present invention carry on the back thick stick using pretreatment, localization process, spraying scaling powder, the pre-heat treatment, setting, are symmetrically welded, remove
It carries on the back thick stick and rear process of thermal treatment sequence carries out the welding of pipe fitting, effectively increase the rigidity of welding position, the ruler of rock-steady structure
It is very little, reduce the deformation that weld seam generates, while fixture being cooperated to act on, so that the part shortened after welding is cooling is extended, into one
Step correction deformation.
(2) technical solution
To solve the above problems, the present invention provides the technology that a kind of precision parts prevent deformation in the welding process, operation
Step includes:
S1, the position to be welded of pipe fitting is pre-processed: is cut first along the Y-direction scattering device of end pipe mouth to be welded is multiple
Mouthful, increase welding degree；Then by the way of polishing, the X-direction of end pipe mouth to be welded is handled, so that end abutted position to be welded
It is smooth, abut close tight conjunction；
S2, it treats weld-end fittings progress localization process: two pipe fittings to be welded being placed across on fixture, end phase to be welded
It is right, and between two pipe fittings to be welded place low melting point weld tabs, then operate fixture make the to be welded of two pipe fittings
Position is corresponding, and is fitted tightly over the two sides of weld tabs；Fixture extends the part shortened after welding is cooling, to correct shape
Become；
S3, welding position spraying scaling powder is treated；Scaling powder is used to remove the oxide of weld tabs and tube surface to be welded, makes gold
Metal surface reaches necessary cleannes, and the re-oxidation on surface when preventing from welding reduces solder surface tension, improves welding performance；
S4, the pre-heat treatment: pipe fitting is evenly heated within the scope of nozzle two sides 70mm-90mm to be welded；
S5, by the way of spot welding, position to be welded be arranged back thick stick；It is vertical with two welding surfaces to carry on the back thick stick；Thick stick is carried on the back by setting
Increase the rigidity of welding position, reduces deformation quantity；
S6, two welders start simultaneously at side of the welding far from back thick stick using balanced welding connection, so that the change that two weld seams generate
Shape is cancelled out each other a part；
S7, back thick stick is removed, continues to be symmetrically welded remaining fracture；
S8, rear heat treatment: encasing welding position using novel heat preserving cotton, and then progress furnace is cold or air-cooled, remaining to reduce welding
Stress softens position of hardening, improves the tissue and performance of Seam and heat effected zone, improve the plasticity and toughness of welding point, surely
Determine the size of structure, prevents deformation.
Preferably, in S1, notch is V-shape.
Preferably, in S3, scaling powder is no-clean scaling powder, and using ultrasound spraying.
Preferably, pre- using any one method in flame heating, line-frequency induction heating or infrared heating in S4
Heat is to 100 DEG C or more.
Preferably, in S5, back thick stick is channel steel or I-steel.
Preferably, in S8, novel heat preserving cotton preparation method: by by the chamotte, alumina powder, silica of high-purity
Powder, chromium sand raw material are melted in industrial furnace high temperature, form fluid, are then used compressed air spraying or are got rid of silk with tumbling machine
At threadiness, last condensers collection cotton.
Preferably, CO is used in welding2Gas shielded arc welding;Welding current used is 90-130A, weldingvoltage 20-
23V, speed of welding 5-15cm/min.
Above-mentioned technical proposal of the invention has following beneficial technical effect:
The present invention uses pretreatment, localization process, spraying scaling powder, the pre-heat treatment, setting back thick stick, is symmetrically welded, removes back thick stick
The welding that pipe fitting is carried out with rear process of thermal treatment sequence, effectively increases the rigidity of welding position, the size of rock-steady structure subtracts
The deformation that small weld seam generates, while fixture being cooperated to act on, so that the part shortened after welding is cooling is extended, further correct
Deformation.
Detailed description of the invention
Fig. 1 is the work that a kind of precision parts proposed by the present invention prevent fixture in the technology of deformation in the welding process
Schematic diagram.
Fig. 2 is the structure that a kind of precision parts proposed by the present invention prevent fixture in the technology of deformation in the welding process
Schematic diagram.
Appended drawing reference: 1, fixture；101, pedestal；102, stretch actuator；103, lower clamping piece；104, adjusting screw rod；
105, upper clamping piece；106, locking member；107, elastic component；108, infrared transmitter；109, infrared remote receiver；2, weld tabs；3, it helps
Solder flux；4, thick stick is carried on the back.
Specific embodiment
In order to make the objectives, technical solutions and advantages of the present invention clearer, With reference to embodiment and join
According to attached drawing, the present invention is described in more detail.It should be understood that these descriptions are merely illustrative, and it is not intended to limit this hair
Bright range.In addition, in the following description, descriptions of well-known structures and technologies are omitted, to avoid this is unnecessarily obscured
The concept of invention.
A kind of precision parts proposed by the present invention prevent the technology of deformation in the welding process, and operating procedure includes:
S1, the position to be welded of pipe fitting is pre-processed: is cut first along the Y-direction scattering device of end pipe mouth to be welded is multiple
Mouthful, increase welding degree；Then by the way of polishing, the X-direction of end pipe mouth to be welded is handled, so that end abutted position to be welded
It is smooth, abut close tight conjunction；
S2, it treats weld-end fittings progress localization process: two pipe fittings to be welded being placed across on fixture 1, end to be welded
Relatively, the weld tabs 2 of low melting point is placed and between two pipe fittings to be welded, then operate fixture 1 make two pipe fittings to
Welding position is corresponding, and is fitted tightly over the two sides of weld tabs 2；
S3, welding position spraying scaling powder 3 is treated；Scaling powder 3 is used to remove the oxide of weld tabs 2 and tube surface to be welded,
Make metal surface up to necessary cleannes, the re-oxidation on surface when preventing from welding reduces solder surface tension, improves weldability
Energy；
S4, the pre-heat treatment: pipe fitting is evenly heated within the scope of nozzle two sides 70mm-90mm to be welded；
S5, by the way of spot welding, position to be welded be arranged back thick stick 4；It is vertical with two welding surfaces to carry on the back thick stick 4；It is carried on the back by setting
Thick stick 4 increases the rigidity of welding position, reduces deformation quantity；
S6, two welders start simultaneously at side of the welding far from back thick stick 4 using balanced welding connection, so that the change that two weld seams generate
Shape is cancelled out each other a part；
S7, back thick stick 4 is removed, continues to be symmetrically welded remaining fracture；
S8, rear heat treatment: encasing welding position using novel heat preserving cotton, and then progress furnace is cold or air-cooled, remaining to reduce welding
Stress softens position of hardening, improves the tissue and performance of Seam and heat effected zone, improve the plasticity and toughness of welding point, surely
Determine the size of structure, prevents deformation.
In an alternative embodiment, in S1, notch is V-shape.
In an alternative embodiment, in S3, scaling powder 3 is no-clean scaling powder, and using ultrasound spraying.
In an alternative embodiment, in S4, using in flame heating, line-frequency induction heating or infrared heating
Any one method is preheated to 100 DEG C or more.
In an alternative embodiment, in S5, back thick stick 4 is channel steel or I-steel.
In an alternative embodiment, in S8, novel heat preserving cotton preparation method: by the way that the clay of high-purity is ripe
Material, alumina powder, Cab-O-sil, chromium sand raw material are melted in industrial furnace high temperature, are formed fluid, are then sprayed using compressed air
It blows or gets rid of silk into threadiness, last condensers collection cotton with tumbling machine.
In an alternative embodiment, CO is used in welding2Gas shielded arc welding;Welding current used is 90-130A,
Weldingvoltage is 20-23V, speed of welding 5-15cm/min.
As shown in Figs. 1-2, fixture 1 include pedestal 101, flexible actuator 102, lower clamping piece 103, adjusting screw rod 104, on
Clamping piece 105, locking member 106, elastic component 107, infrared transmitter 108 and infrared remote receiver 109；Flexible actuator 102 is arranged
Two groups, the two sides of pedestal 101 are arranged in two groups of flexible actuators 102；Stretching for flexible actuator 102 is arranged in lower clamping piece 103
Contracting end；Adjusting screw rod 104 is arranged in pairs on the front and back side on lower 103 top of clamping piece；The both ends of upper clamping piece 105 be provided with
The matched through-hole of adjusting screw rod 104；Pairs of 104 upper end of adjusting screw rod is each passed through the both ends through-hole of clamping piece 105, and with
Locking member 106 is threadedly coupled；Elastic component 107 is socketed on adjusting screw rod 104, and the upper end of elastic component 107 connects upper clamping piece
105, lower end connects lower clamping piece 103；Infrared transmitter 108 and infrared remote receiver 109 are separately positioned on clamping piece 103 under two groups
Opposite end on, and position is corresponding.
It should be noted that when fixture 1 works, by pipe fitting to be welded pass through upper clamping piece 105 and lower clamping piece 103 it
Between, the height of two groups of pipe fittings to be welded is adjusted followed by infrared transmitter 108 and infrared remote receiver 109, is kept its contour, is connect
Pipe fitting to be welded is fitted tightly over to the two sides of weld tabs 2, finally rotate adjusting screw rod 104, pipe fitting to be welded carried out
It is fixed, can subsequent welding the effect of welding both ensure that pipe fitting good positioning effect to be welded, also make to weld
The part shortened after cooling is extended, to correct deformation.
It should be understood that above-mentioned specific embodiment of the invention is used only for exemplary illustration or explains of the invention
Principle, but not to limit the present invention.Therefore, that is done without departing from the spirit and scope of the present invention is any
Modification, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.In addition, appended claims purport of the present invention
Covering the whole variations fallen into attached claim scope and boundary or this range and the equivalent form on boundary and is repairing
Change example.
Claims (7)
1. the technology that a kind of precision parts prevent deformation in the welding process, which is characterized in that operating procedure includes:
S1, the position to be welded of pipe fitting is pre-processed: is cut first along the Y-direction scattering device of end pipe mouth to be welded is multiple
Mouthful, increase welding degree；Then by the way of polishing, the X-direction of end pipe mouth to be welded is handled, so that end abutted position to be welded
It is smooth, abut close tight conjunction；
S2, it treats weld-end fittings progress localization process: two pipe fittings to be welded is placed across on fixture (1), it is to be welded
End is opposite, and the weld tabs (2) of low melting point is placed between two pipe fittings to be welded, then operates fixture (1) and makes two pipes
The position to be welded of part is corresponding, and is fitted tightly over the two sides of weld tabs (2)；
S3, welding position spraying scaling powder (3) is treated；
S4, the pre-heat treatment: pipe fitting is evenly heated within the scope of nozzle two sides 70mm-90mm to be welded；
S5, by the way of spot welding, position to be welded be arranged back thick stick (4)；It is vertical with two welding surfaces to carry on the back thick stick (4)；
S6, two welders start simultaneously at side of the welding far from back thick stick (4) using balanced welding connection；
S7, back thick stick (4) is removed, continues to be symmetrically welded remaining fracture；
S8, rear heat treatment: encasing welding position using novel heat preserving cotton, and it is cold or air-cooled then to carry out furnace.
2. the technology that a kind of precision parts according to claim 1 prevent deformation in the welding process, which is characterized in that
In S1, notch is V-shape.
3. the technology that a kind of precision parts according to claim 1 prevent deformation in the welding process, which is characterized in that
In S3, scaling powder (3) is no-clean scaling powder, and using ultrasound spraying.
4. the technology that a kind of precision parts according to claim 1 prevent deformation in the welding process, which is characterized in that
In S4,100 DEG C or more are preheated to using any one method in flame heating, line-frequency induction heating or infrared heating.
5. the technology that a kind of precision parts according to claim 1 prevent deformation in the welding process, which is characterized in that
In S5, back thick stick (4) is channel steel or I-steel.
6. the technology that a kind of precision parts according to claim 1 prevent deformation in the welding process, which is characterized in that
In S8, novel heat preserving cotton preparation method: by the way that the chamotte of high-purity, alumina powder, Cab-O-sil, chromium sand raw material exist
The melting of industrial furnace high temperature, forms fluid, then uses compressed air spraying or gets rid of silk into threadiness with tumbling machine, finally collects
Cotton device collection cotton.
7. the technology that a kind of precision parts according to claim 1 prevent deformation in the welding process, which is characterized in that
CO is used in welding2Gas shielded arc welding;Welding current used is 90-130A, weldingvoltage 20-23V, speed of welding 5-
15cm/min。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910719977.1A CN110394574A (en) | 2019-08-06 | 2019-08-06 | A kind of precision parts prevent the technology of deformation in the welding process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910719977.1A CN110394574A (en) | 2019-08-06 | 2019-08-06 | A kind of precision parts prevent the technology of deformation in the welding process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110394574A true CN110394574A (en) | 2019-11-01 |
Family
ID=68327513
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910719977.1A Pending CN110394574A (en) | 2019-08-06 | 2019-08-06 | A kind of precision parts prevent the technology of deformation in the welding process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110394574A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111687567A (en) * | 2020-06-17 | 2020-09-22 | 苏州市海韵模具有限公司 | Welding process for precision parts |
| CN113337021A (en) * | 2021-05-28 | 2021-09-03 | 瑞源橡塑制品有限公司 | High-temperature-resistant low-compression-permanent-deformation chloroprene rubber composition, preparation method and special preparation equipment |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101074085A (en) * | 2007-06-06 | 2007-11-21 | 中国核工业华兴建设有限公司 | Method for assembling and welding cased crane-beam in circular rail of nuclear-power station |
| CN102554402A (en) * | 2012-01-18 | 2012-07-11 | 江苏中核利柏特股份有限公司 | Welding and heat treatment processes of large-diameter and thick-wall nuclear process pipes |
| CN102626850A (en) * | 2012-04-27 | 2012-08-08 | 中国化学工程第四建设有限公司 | Installation process for metal oil tank in cave storage |
| CN103801847A (en) * | 2014-03-11 | 2014-05-21 | 中国化学工程第六建设有限公司 | Welding method of copper tube |
| JP2016078085A (en) * | 2014-10-17 | 2016-05-16 | 日立Ｇｅニュークリア・エナジー株式会社 | Piping residual stress improving method, antifreeze liquid supply method between ice plugs, and piping residual stress improving device |
| CN108194175A (en) * | 2017-12-29 | 2018-06-22 | 潍柴动力股份有限公司 | After-treatment device and vehicle |
| CN209190126U (en) * | 2018-11-28 | 2019-08-02 | 上海寅铠精密机械制造有限公司 | A kind of automobile component positioning device for welding |
-
2019
- 2019-08-06 CN CN201910719977.1A patent/CN110394574A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101074085A (en) * | 2007-06-06 | 2007-11-21 | 中国核工业华兴建设有限公司 | Method for assembling and welding cased crane-beam in circular rail of nuclear-power station |
| CN102554402A (en) * | 2012-01-18 | 2012-07-11 | 江苏中核利柏特股份有限公司 | Welding and heat treatment processes of large-diameter and thick-wall nuclear process pipes |
| CN102626850A (en) * | 2012-04-27 | 2012-08-08 | 中国化学工程第四建设有限公司 | Installation process for metal oil tank in cave storage |
| CN103801847A (en) * | 2014-03-11 | 2014-05-21 | 中国化学工程第六建设有限公司 | Welding method of copper tube |
| JP2016078085A (en) * | 2014-10-17 | 2016-05-16 | 日立Ｇｅニュークリア・エナジー株式会社 | Piping residual stress improving method, antifreeze liquid supply method between ice plugs, and piping residual stress improving device |
| CN108194175A (en) * | 2017-12-29 | 2018-06-22 | 潍柴动力股份有限公司 | After-treatment device and vehicle |
| CN209190126U (en) * | 2018-11-28 | 2019-08-02 | 上海寅铠精密机械制造有限公司 | A kind of automobile component positioning device for welding |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111687567A (en) * | 2020-06-17 | 2020-09-22 | 苏州市海韵模具有限公司 | Welding process for precision parts |
| CN113337021A (en) * | 2021-05-28 | 2021-09-03 | 瑞源橡塑制品有限公司 | High-temperature-resistant low-compression-permanent-deformation chloroprene rubber composition, preparation method and special preparation equipment |
| CN113337021B (en) * | 2021-05-28 | 2022-10-28 | 瑞源橡塑制品有限公司 | High-temperature-resistant low-compression-permanent-deformation chloroprene rubber composition, preparation method and special preparation equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110394574A (en) | A kind of precision parts prevent the technology of deformation in the welding process | |
| CN105665898B (en) | A kind of pearlitic heat resistant steel composite board Lincoln weld welding method | |
| CN104384674B (en) | The motor-driven tungsten argon arc welding method of main pump motor rotor shielding sleeve and rotor end bell | |
| CN104191095B (en) | A kind of major diameter annular element welding procedure | |
| CN105689857A (en) | Tower drum manufacturing welding process | |
| CN107009059A (en) | A kind of method for controlling nacelle structural member welding deformation | |
| CN105458445A (en) | Laser tin soldering device and soldering method | |
| CN103801847A (en) | Welding method of copper tube | |
| CN109108431A (en) | A kind of welding method of super thick steel-casting | |
| CN109128444A (en) | Prevent the welding method and device of steam head plate welding deformation | |
| CN102581450A (en) | Multi-wire submerged-arc multi-layer multi-pass welding process | |
| CN105983761A (en) | High-strength steel welding process | |
| CN109352127A (en) | A kind of fillet weld automatic welding device and method | |
| CN105345230A (en) | Argon arc brazing method for patch welding brazing seams of rotor connecting ring of shielding motor | |
| CN107953043A (en) | A kind of welding procedure of last furnace shell longitudinal seam | |
| CN105904063A (en) | Forged steel piece welding method | |
| CN207735750U (en) | A kind of welding fixture being installed on mould parts | |
| CN110773894B (en) | Reheating crack control method for welding heat affected zone of large-restraint-degree structural assembly | |
| CN110052687A (en) | A kind of split type forming punching head welding procedure | |
| CN109128626A (en) | The welding of combustion chamber flame drum flow spoiler cold metal transfer increases material processing technology and welding machine | |
| CN105171261A (en) | Welding method of large steel making converter body | |
| CN208961197U (en) | Prevent the welder of steam head plate welding deformation | |
| CN212734548U (en) | Pipeline induction brazing device | |
| WO2021139080A1 (en) | Welding method of iron-aluminum-based intermetallic compound microporous material and welded piece thereof | |
| CN211102150U (en) | Laser welding device for sheet metal processing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20191101 |