CN105921871A - Integrated molding welding method of large-caliber all-welded ball valve - Google Patents
Integrated molding welding method of large-caliber all-welded ball valve Download PDFInfo
- Publication number
- CN105921871A CN105921871A CN201610393888.9A CN201610393888A CN105921871A CN 105921871 A CN105921871 A CN 105921871A CN 201610393888 A CN201610393888 A CN 201610393888A CN 105921871 A CN105921871 A CN 105921871A
- Authority
- CN
- China
- Prior art keywords
- welding
- valve body
- welded
- ball valve
- barrel
- 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
- B23K13/00—Welding by high-frequency current heating
- B23K13/01—Welding by high-frequency current heating by induction heating
-
- 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
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
- Valve Housings (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The invention provides an integrated molding welding method of a large-caliber all-welded ball valve. The method comprises the following steps of S1, product final assembly, S2, spot welding, S3, basic performance detecting, S4, welding of a left valve body and a right valve body, S5, neck seat welding and S6, postweld treatment. According to the method, the manner of carrying out spot welding and girth welding in sequence is adopted, detection is carried out before girth welding, the situation that overall scrapping is caused due to the fact that a detection structure does not reach the standard is avoided, and therefore unnecessary losses are reduced.
Description
Technical field
Patent of the present invention relates to technical field of valve manufacturing, particularly a kind of heavy caliber all-welded ball valve integral type
Molding welding method.
Background technology
Self-elevating drilling platform is one of equipment that exploitation of oil-gas field is most widely used in the world at present, has
Cost is low, can be used for multiple in the case of the feature of round-the-clock drillng operation, the design of self-elevating drilling platform
Production technique directly decides the producing capacity of marine oil gas field resource.Drilling platforms is except can be to seabed stone
Outside oil and natural gas are exploited, it is necessary to the petroleum and natural gas produced can be transported.
Pipeline transportation is the prevailing traffic mode of oil and natural gas, has the advantages that pressure is high, bore is big.
In transport line system, ball valve optimum directly does opening and closing and uses, and has throttling and controls the purposes of flow.
Ball valve be mainly characterized by compact conformation own, it is easy to Operation and maintenance, it is adaptable to gas and liquid form
General work medium, it is possible to adapt to severe working condition.Full welded pipeline ball valve because of its have switch rapidly,
The advantages such as flow resistance is little, compact conformation, light weight and sealing are reliable, be present petroleum transportation pipeline realize collection defeated,
Circulation in point defeated and station, equipment connection, tank switching, first-selection that more operation such as station and wiper transmitting-receiving is used are controlled
Parts processed.
The particularity of all-welded ball valve version so that it is manufacture difficulty is relatively big, and wherein, technical difficulty is main
Show: middle body and the girth welding contraction distortion amount of left and right body, circumferential weld and the welding quality of cervical region, zero
Component processing precision and tolerance fit.The invention provides a kind of self-elevating drilling platform high pressure line heavy caliber
The welding method of all-welded ball valve, optimizes the technological parameter of welding, decreases welding job amount, improves complete
The welding efficiency of welding ball valve, saves welding cost.
Summary of the invention
The purpose of the present invention is exactly the mode using and first putting postwelding boxing, first detects before boxing, anti-
Only cause entirety to scrap owing to detection structure is the most up to standard, thus decrease unnecessary loss, and invent
A kind of heavy caliber all-welded ball valve integral molding welding method.
For solving above-mentioned technical problem, the invention provides a kind of heavy caliber all-welded ball valve integral molding
Welding method, step is as follows:
S1: product final assemble: middle valve body both sides are installed after sealing ring and respectively with left valve barrel, right valve barrel and
Head and neck seat assembles
Coordinate, carry out general assembly clamping；
S2: spot welding: carry out spot welding between middle valve body and left valve barrel, right valve barrel and head and neck seat；
S3: basic property detects: the ball valve of a postwelding carries out the detection of pressure, torsional performance；
S4: left and right valve body welds: after detection performance meets the requirements, centering valve body and left valve barrel, right valve
Body welds；
S5: head and neck seat welds: after step S4 completes, centering valve body welds with head and neck seat；
S6: after welding treatment: remove oxide on surface and other pollutant with pickling, and under the dry condition,
Butt welded seam surface carries out abrasive jet cleaning, and uses glass granules blast cleaning, falls into oblivion, scrubs and polish.
Further: described step S4: the welding of left and right valve body is to first pass through right angle groove centering valve body and left valve
Body, right valve barrel position, then use every layer of double welding bead (11) welding method centering valve body and left valve barrel,
Right valve barrel welds, and last butt welded seam detects, and welding position is heated to 100～120 DEG C, uses
Asbestos cloth wrapping slow cooling, after heat treatment completes, butt welded seam carries out Non-Destructive Testing by code requirement, and detection method is
Supersonic testing method.
Further: described when centering valve body welds with left valve barrel, right valve barrel, welding wire is straight
Footpath is 1.6mm, and thermal weld stress amount controls 15～20J/cm, and flux basicity is 2.5, and welding current is
200～220A, voltage is 30～32V, and speed of welding is 250mm/min, interlayer temperature control 100～
120℃。
Further: described step S5: the welding of head and neck seat is that the groove type first passing through adverse slope actinal surface is carried out
Location, then uses the method for welded corner joint to weld, and last butt welded seam detects, and is added welding position
Heat, to 100～120 DEG C, wraps up slow cooling with asbestos cloth, and after heat treatment completes, butt welded seam is carried out by code requirement
Non-Destructive Testing, detection method is supersonic testing method.
Further: the described gage of wire used when correct neck seat is welded is 1.6mm, and sweating heat is defeated
Entering amount and control 18～25J/cm, flux basicity is 2.5, and welding current is 150～250A, and voltage is
25～35V, speed of welding is 250～300mm/min, and interlayer temperature controls at 100～150 DEG C, weldering
Road spread pattern is every layer of double welding bead.
Further: described step S4 and S5 use the high-frequency welder of 100KW, width of induction coil
B is 30mm, and variable-frequency power sources is≤2000A, and frequency is 100KHz.
After using said structure, the present invention uses the mode first putting postwelding boxing, first detects before boxing,
Prevent owing to detection structure is the most up to standard and cause entirety to scrap, thus decrease unnecessary loss.
Accompanying drawing explanation
Fig. 1 is process chart.
Detailed description of the invention
A kind of heavy caliber all-welded ball valve integral molding welding method as shown in Figure 1, step is as follows:
S1: product final assemble: middle valve body both sides are installed after sealing ring and respectively with left valve barrel, right valve barrel and
Head and neck seat assembles
Coordinate, carry out general assembly clamping；
S2: spot welding: carry out spot welding between middle valve body and left valve barrel, right valve barrel and head and neck seat；
S3: basic property detects: the ball valve of a postwelding carries out the detection of pressure, torsional performance；
S4: left and right valve body welds: after detection performance meets the requirements, centering valve body and left valve barrel, right valve
Body welds；
S5: head and neck seat welds: after step S4 completes, centering valve body welds with head and neck seat；
S6: after welding treatment: remove oxide on surface and other pollutant with pickling, and under the dry condition,
Butt welded seam surface carries out abrasive jet cleaning, and uses glass granules blast cleaning, falls into oblivion, scrubs and polish.
Above-mentioned step S4: the welding of left and right valve body is to first pass through right angle groove centering valve body and left valve barrel, the right side
Valve body positions, and then uses every layer of double welding bead (11) welding method centering valve body and left valve barrel, right valve barrel
Welding, last butt welded seam detects, and welding position is heated to 100～120 DEG C, uses asbestos cloth
Wrapping slow cooling, after heat treatment completes, butt welded seam carries out Non-Destructive Testing by code requirement, and detection method is ultrasonic inspection
Survey method.
Above-mentioned when centering valve body welds with left valve barrel, right valve barrel, gage of wire be 1.6mm,
Thermal weld stress amount controls 15～20J/cm, and flux basicity is 2.5, and welding current is 200～220A,
Voltage is 30～32V, and speed of welding is 250mm/min, and interlayer temperature controls at 100～120 DEG C.
Above-mentioned step S5: the welding of head and neck seat is that the groove type first passing through adverse slope actinal surface positions, then
Use welded corner joint method weld, last butt welded seam detects, welding position is heated to 100～
120 DEG C, wrapping up slow cooling with asbestos cloth, after heat treatment completes, butt welded seam carries out Non-Destructive Testing by code requirement, inspection
Survey method is supersonic testing method.
The above-mentioned gage of wire used when correct neck seat is welded is 1.6mm, and thermal weld stress amount controls
18～25J/cm, flux basicity is 2.5, and welding current is 150～250A, and voltage is 25～35V,
Speed of welding is 250～300mm/min, and interlayer temperature controls at 100～150 DEG C, welding bead spread pattern
For every layer of double welding bead.
Above-mentioned step S4 and S5 use the high-frequency welder of 100KW, and width of induction coil B is 30mm,
Variable-frequency power sources is≤2000A, and frequency is 100KHz.
The present invention uses the mode first putting postwelding boxing, first detects before boxing, prevents due to detection
Structure is the most up to standard and causes entirety to scrap, thus decreases unnecessary loss.
Claims (6)
1. a heavy caliber all-welded ball valve integral molding welding method, it is characterised in that: the following institute of step
Show:
S1: product final assemble: middle valve body both sides are installed after sealing ring and respectively with left valve barrel, right valve barrel and
Head and neck seat assembles
Coordinate, carry out general assembly clamping；
S2: spot welding: carry out spot welding between middle valve body and left valve barrel, right valve barrel and head and neck seat；
S3: basic property detects: the ball valve of a postwelding carries out the detection of pressure, torsional performance；
S4: left and right valve body welds: after detection performance meets the requirements, centering valve body and left valve barrel, right valve
Body welds；
S5: head and neck seat welds: after step S4 completes, centering valve body welds with head and neck seat；
S6: after welding treatment: remove oxide on surface and other pollutant with pickling, and under the dry condition,
Butt welded seam surface carries out abrasive jet cleaning, and uses glass granules blast cleaning, falls into oblivion, scrubs and polish.
A kind of heavy caliber all-welded ball valve integral molding welding method the most according to claim 1, its
It is characterised by: described step S4: the welding of left and right valve body is to first pass through right angle groove centering valve body with left
Valve body, right valve barrel position, and then use every layer of double welding bead (11) welding method centering valve body and left valve
Body, right valve barrel weld, and last butt welded seam detects, and welding position is heated to 100～120
DEG C, wrap up slow cooling with asbestos cloth, after heat treatment completes, butt welded seam carries out Non-Destructive Testing by code requirement, inspection
Survey method is supersonic testing method.
A kind of heavy caliber all-welded ball valve integral molding welding method the most according to claim 2, its feature
Be: described when centering valve body welds with left valve barrel, right valve barrel, gage of wire be
1.6mm, thermal weld stress amount controls 15～20J/cm, and flux basicity is 2.5, and welding current is
200～220A, voltage is 30～32V, and speed of welding is 250mm/min, and interlayer temperature controls
100～120 DEG C.
A kind of heavy caliber all-welded ball valve integral molding welding method the most according to claim 1, its feature
It is: described step S5: the welding of head and neck seat is that the groove type first passing through adverse slope actinal surface positions,
Then the method using welded corner joint is welded, and last butt welded seam detects, and is heated to welding position
100～120 DEG C, wrapping up slow cooling with asbestos cloth, after heat treatment completes, butt welded seam carries out nothing by code requirement
Damaging detection, detection method is supersonic testing method.
A kind of heavy caliber all-welded ball valve integral molding welding method the most according to claim 4, its feature
It is: the described gage of wire used when correct neck seat is welded is 1.6mm, thermal weld stress
Amount controls 18～25J/cm, and flux basicity is 2.5, and welding current is 150～250A, voltage
Being 25～35V, speed of welding is 250～300mm/min, and interlayer temperature controls 100～150
DEG C, welding bead spread pattern is every layer of double welding bead.
A kind of heavy caliber all-welded ball valve integral molding welding method the most according to claim 1, its
It is characterised by: described step S4 and S5 use the high-frequency welder of 100KW, and width of induction coil B is
30mm, variable-frequency power sources is≤2000A, and frequency is 100KHz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610393888.9A CN105921871A (en) | 2016-06-03 | 2016-06-03 | Integrated molding welding method of large-caliber all-welded ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610393888.9A CN105921871A (en) | 2016-06-03 | 2016-06-03 | Integrated molding welding method of large-caliber all-welded ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105921871A true CN105921871A (en) | 2016-09-07 |
Family
ID=56833531
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610393888.9A Pending CN105921871A (en) | 2016-06-03 | 2016-06-03 | Integrated molding welding method of large-caliber all-welded ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105921871A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107489781A (en) * | 2017-09-18 | 2017-12-19 | 江苏诚功阀门科技有限公司 | The assembly technology of fixing ball valve |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE20305266U1 (en) * | 2003-04-02 | 2003-05-28 | Klinger Ag, Zug | Fully welded ball valve housing has dome which on end fitting in opening in housing has conical start while opening has conical bore corresponding to it, and with housing pipe, dome and connectors interconnected by laser welding |
| CN102363239A (en) * | 2011-09-28 | 2012-02-29 | 克里特集团有限公司 | Automatic narrow-gap submerged arc welding process for all-welded fixed ball valve with medium and large calibers |
| CN102853143A (en) * | 2012-09-26 | 2013-01-02 | 四川精控阀门制造有限公司 | All-welded ball valve and welding method of all-welded ball valve |
| CN103008851A (en) * | 2012-12-14 | 2013-04-03 | 四川精控阀门制造有限公司 | All-welded ball valve body weld narrow-gap welding process and interface structure |
| CN103672008A (en) * | 2013-11-28 | 2014-03-26 | 克里特集团有限公司 | Ball valve with all-welded valve bodies and welding method of ball valve |
| CN203664989U (en) * | 2014-01-07 | 2014-06-25 | 章荣生 | Dual-purpose device for ball valve positioning welding and sealing performance detection |
| CN105108275A (en) * | 2015-09-23 | 2015-12-02 | 天津惠蓬海洋工程有限公司 | Welding method for self-elevating drilling platform high pressure line large-caliber all-welded ball valve |
-
2016
- 2016-06-03 CN CN201610393888.9A patent/CN105921871A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE20305266U1 (en) * | 2003-04-02 | 2003-05-28 | Klinger Ag, Zug | Fully welded ball valve housing has dome which on end fitting in opening in housing has conical start while opening has conical bore corresponding to it, and with housing pipe, dome and connectors interconnected by laser welding |
| CN102363239A (en) * | 2011-09-28 | 2012-02-29 | 克里特集团有限公司 | Automatic narrow-gap submerged arc welding process for all-welded fixed ball valve with medium and large calibers |
| CN102853143A (en) * | 2012-09-26 | 2013-01-02 | 四川精控阀门制造有限公司 | All-welded ball valve and welding method of all-welded ball valve |
| CN103008851A (en) * | 2012-12-14 | 2013-04-03 | 四川精控阀门制造有限公司 | All-welded ball valve body weld narrow-gap welding process and interface structure |
| CN103672008A (en) * | 2013-11-28 | 2014-03-26 | 克里特集团有限公司 | Ball valve with all-welded valve bodies and welding method of ball valve |
| CN203664989U (en) * | 2014-01-07 | 2014-06-25 | 章荣生 | Dual-purpose device for ball valve positioning welding and sealing performance detection |
| CN105108275A (en) * | 2015-09-23 | 2015-12-02 | 天津惠蓬海洋工程有限公司 | Welding method for self-elevating drilling platform high pressure line large-caliber all-welded ball valve |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107489781A (en) * | 2017-09-18 | 2017-12-19 | 江苏诚功阀门科技有限公司 | The assembly technology of fixing ball valve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102773581B (en) | The welding procedure of pearlite heatproof steel and ordinary carbon steel | |
| CN103672008A (en) | Ball valve with all-welded valve bodies and welding method of ball valve | |
| CN105689857A (en) | Tower drum manufacturing welding process | |
| CN104923928A (en) | Q690D steel tube longitudinal seam welding method for crane boom | |
| CN105312742A (en) | Welding technology | |
| CN103464925A (en) | High-temperature heat-proof steel component welding repair method for power station | |
| CN103111734A (en) | Method and device for improving underwater wet welding joint structure property | |
| CN105921871A (en) | Integrated molding welding method of large-caliber all-welded ball valve | |
| CN104942428A (en) | Hydraulic cylinder friction welding production technology | |
| CN105108275A (en) | Welding method for self-elevating drilling platform high pressure line large-caliber all-welded ball valve | |
| CN104801835A (en) | Method for welding without back chipping for ice resisting and water resisting pipe joint | |
| CN203627875U (en) | Ball valve with all-welded valve body | |
| CN110449698A (en) | A kind of 6-16mm welding method for steel plates | |
| CN101628354B (en) | Bore welding method of heat exchange tube and tube plate in heat exchanger | |
| CN105234533A (en) | Steel welding technology | |
| CN104416259A (en) | Welding process of water feed pump of nuclear power plant conventional island | |
| CN103537772B (en) | Airtight welding method for metal shell and end-sealing glass | |
| CN104077470B (en) | Supertension tubular type reactor end portion structure magnitude of interference method for designing based on risk | |
| CN105108281A (en) | Welding process for oil pipe of main transformer of electric locomotive | |
| CN111496357A (en) | Transverse welding method for BB41-BF hot blast furnace shell | |
| CN101870040A (en) | Cylinder fatigue internal-crack welding and restoring process of piston type oxygen compressor | |
| CN113600971A (en) | Girth welding process for header and pipeline with thick wall on power station boiler | |
| CN109530894B (en) | Method for plasma spray welding stellite alloy on valve seat sealing surface | |
| CN103934553B (en) | Steel piston annular groove is welded with evanohm technique | |
| CN108555525B (en) | Welding repair process for adsorption desulfurization regenerator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160907 |