CN107511567B - A kind of welding plate stamping and forming end socket welding heat affected zone wall thickness control method - Google Patents
A kind of welding plate stamping and forming end socket welding heat affected zone wall thickness control method Download PDFInfo
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- CN107511567B CN107511567B CN201710682270.9A CN201710682270A CN107511567B CN 107511567 B CN107511567 B CN 107511567B CN 201710682270 A CN201710682270 A CN 201710682270A CN 107511567 B CN107511567 B CN 107511567B
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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
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/12—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to investigating the properties, e.g. the weldability, of materials
- B23K31/125—Weld quality monitoring
-
- 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
- B23K9/00—Arc welding or cutting
- B23K9/16—Arc welding or cutting making use of shielding gas
- B23K9/167—Arc welding or cutting making use of shielding gas and of a non-consumable electrode
-
- 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
- B23K9/00—Arc welding or cutting
- B23K9/235—Preliminary treatment
-
- 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
- B23K2101/18—Sheet panels
- B23K2101/185—Tailored blanks
-
- 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
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/02—Iron or ferrous alloys
- B23K2103/04—Steel or steel alloys
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Quality & Reliability (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
- Arc Welding In General (AREA)
Abstract
A kind of welding plate stamping and forming end socket welding heat affected zone wall thickness control method, it is mainly before tailor welded welding, shape and structure design is carried out to its welding point part, makes the part after the completion of welding in drawing process, obtains Thickness Distribution identical with remaining region.When the forming of integrated head finishing drawing, the substantially homogeneous end socket of wall thickness is thinned into weld seam and connector heat affected area, the thickness for preventing from large container end socket welding point heat affected area in this way is far below the generation of remaining position phenomenon, improve the evenness of wall thickness of large-sized end enclosure product, the large-sized end enclosure for meeting minimum wall thickness (MINI W.) requirement can be shaped using relatively thin plate, to save raw material, production cost is reduced.
Description
Technical field:
The present invention relates to a kind of welding molded article wall thickness control methods, especially the wall thickness control side of end socket welding forming
Method.
Background technique:
Welding manufacturing process is the plate by two or more than two same material or unlike material, stack pile or different-thickness
Metal is integral using the method connection of welding, through subsequent material working process, the materials processing technology for the product that is applied.It spells
Welding technology not only overcomes large-scale drip molding forming difficulty, but also can also save raw material to a certain extent, reduce manufacture at
This, while being also able to satisfy requirement of the drip molding different operating position to different-stiffness intensity.Large container end socket is typically now adopted
Manufacture early period with welding technology, material can be saved in this way, can also improve local intensity, but due to welding process
High-temperature effect, can be such that welding point heat affected area is acted on by high annealing, lead to postwelding heat affected area coarse grains, cause
The mechanical property of built up head different location is different, and in the processing of subsequent drawing and forming, heat affected area tends to occur larger
Be thinned, and base material be thinned it is then comparatively small, cause the serious non-uniform phenomenon of large-sized end enclosure wall thickness, influence later period service condition,
Welding slab without shape design improvement, the end socket for shaping generation are easy to generate excessive thinning in welding heat affected zone, referring to
Attached drawing 1 and Fig. 2.
Summary of the invention:
316L austenitic stainless steel welding plate stamping and forming end socket sweating heat can be prevented the object of the present invention is to provide a kind of
Zone of influence excessive thinning makes the uniform welding plate stamping and forming end socket welding heat affected zone wall of splice-welded plate deep drawing forming end socket wall thickness
Thick control method.Method of the invention is to carry out shape and structure design before tailor welded welding to its welding point part, make
The part in drawing process, obtains and Thickness Distribution similar in remaining region after the completion of welding.When integrated head is completed
When drawing and forming, the substantially homogeneous end socket of wall thickness is thinned into weld seam and connector heat affected area, prevents from large container envelope in this way
The thickness of head welding point heat affected area is far below the generation of remaining position phenomenon, improves the uniform wall thickness of large-sized end enclosure product
Property.
Method of the invention is specific as follows:
1, according to the forming requirements of different-thickness plate large container 316L austenitic stainless steel end socket, it is first determined welding
Connector heat affected area width after the completion is determined by finite element modelling and test when plate thickness is less than or equal to 5mm, by 5mm
It calculates, when plate thickness is greater than 5mm, calculates heat affected area width H according to following formula.
H=5+0.2t (1)
2, it according to calculated heat affected area width, determines the size of plate before welding, and then wlding is designed；It is logical
Shape design circular arc and slab radius R can be calculated by crossing formula (2)1, and then shape is calculated by formula (3)
Shape designs circular arc and weld seam radius R2And shape designs arc radius R3:
H=R1·cos40° (2)
R1: R2: R3=4:2:3 (3)
H in formula --- connector heat affected area width (mm)
T --- welding plate thickness (mm)
R3--- shape designs arc radius (mm)
R1--- the radius (mm) of shape design circular arc and slab
R2--- the radius (mm) of shape design circular arc and weld seam
The R being calculated by above-mentioned formula1、R2、R3The circular arc of composition is all tangent connection.
3, using existing milling train, but the geomery of its roll should meet the design shape size of the plate, i.e., up and down
Two rolls and the corresponding part of two connectors to be welded are equipped with arc groove corresponding with the design shape size of the plate, then
Rolling before carrying out welding obtains the plate that both ends have arc convex；
4, there is the plate of arc convex to cut along rolling direction from centre the both ends of acquisition, obtains two boards base, adopts
Corresponding two arc convex of two boards base after rolling are subjected to welding with argon tungsten-arc welding, welding connector is made
End socket welding slab, and along weld seam symmetrical machining at the circle of required size；
5, welding point polishing grinding spells the end socket of welding connector using end socket drawing and forming punch-die mold
Welding plate base carries out drawing and forming；
6, drawing and forming rear head is subjected to subsequent processing, circular head is made.
Working process and principle of the invention are approximately as: the present invention mainly by using band to the slab before welding
The milling train of special shape roll is rolled, and the slab A and B to welding with special construction is made.The present invention is directed to different rulers
Very little and thickness large container end socket, gives the design method of different-thickness welding blank shape R1, R2, R3, so that it is determined that
It can prevent the optimal joint geometry and size that the even property of wall unevenness occurs when large container end socket drawing and forming.Given by the present invention
The design formula and method of special construction welding slab are unrelated with end socket size.
The invention has the following advantages over the prior art:
The present invention for welding point heat affected area in 316L austenitic stainless steel built up head drawing process have compared with
It is big to be thinned, thus the problem for be easy to causeing sheet products wall unevenness even, propose a kind of novel connect to welding slab
Head shapes design, and then to the method that the shape of welding slab optimizes.By the shape design to slab, make welding
The wall thickness of welding point heat affected area and remaining position are essentially identical after forming for end socket, the wall after capable of improving end socket drawing and forming
Thick uniformity can shape the large-sized end enclosure for meeting minimum wall thickness (MINI W.) requirement using relatively thin plate, to save former material
Material reduces production cost.
Detailed description of the invention
Fig. 1 is traditional built up head drawing and forming part main view section simplified schematic diagram；
Fig. 2 is that traditional built up head drawing and forming part overlooks simplified schematic diagram；
Fig. 3 is main view section simplified schematic diagram in roller system of rolling mill part of the present invention；
Fig. 4 is the slab main view schematic diagram that the present invention splits after rolling from centre；
Fig. 5 is the slab part main view schematic diagram of the spliced postwelding of the present invention；
Fig. 6 is the main view section simplified schematic diagram of drawing and forming rear head of the present invention.
In figure: 1- built up head, 2- end socket welding point heat affected area, 3- end socket welding point, 4- roll, 5- slab roll
Position processed, 6- roller system, 7- slab A to welding, 8- slab B to welding, the slab after 9- welding, the end socket of 10- drawing and forming,
R3- shape designs arc radius, and R1- shape designs the radius of circular arc and slab, and R2- shape designs circular arc and weld seam
Radius.
Specific embodiment
Embodiment 1
Process the 316L austenite stainless steel plate end socket with a thickness of 4mm.Because its plate thickness is less than 5mm then welding point heat affecting
The width in area 2 is 5mm.Again by formula (2) H=R1Cos40 ° and formula (3) R1: R2: R3The welding is calculated in=4:2:3
The size of R1, R2 and R3 of slab.In formula (2) and formula (3), H is connector heat affected area width (mm), R3It is designed for shape
Arc radius (mm), R1The radius (mm) of circular arc and slab, R are designed for shape2Circular arc and weld seam are designed for shape
Radius (mm).And the R being calculated by above-mentioned formula1、R2、R3The circular arc of composition is all tangent connection.It calculates
The size for obtaining R1, R2 and R3 of the welding slab is respectively R1=6.5mm, and (thickness retains by R2=3.3mm, R3=4.9mm
Two effective digitals).Using existing milling train, as shown in figure 3, but the geomery of its roll 4 should meet the design of the plate
Geomery, i.e., up and down two rolls part corresponding with two connectors to be welded equipped with corresponding with the design shape size of the plate
Arc groove, then by plate be placed in 6 slab rolling position 5 of roller system carry out welding before rolling, obtain both ends have arc
The plate of protrusion；By the both ends of acquisition have arc convex plate along rolling direction from centre cut, obtain two pieces it is to welding
Slab A7 and B8, as shown in figure 4, using argon tungsten-arc welding by by rolling after corresponding two arc convex of two boards base into
Slab 9 after the end socket welding of welding connector is made in row welding, as shown in figure 5, and along weld seam symmetrical machining at required size
It is round.3 polishing grinding of welding point carries out the end socket welding slab of welding connector using end socket drawing and forming mold
Drawing and forming；End socket after drawing and forming is subjected to subsequent processing, round built up head 10 is made, as shown in Figure 6.Through measuring wall
Thick deviation ratio is less than 5%, less than the wall thickness deviation rate 17% of the drawing and forming end socket without shape design improvement.
Embodiment 2
Process the 316L austenite stainless steel plate end socket with a thickness of 6mm.It is calculated first according to formula (1) H=5+0.2t
The width of welding point heat affected area 2 is 6.2mm out, and H is connector heat affected area width (mm) in formula (2), and t is welding plate thickness
It spends (mm).The size of the welding slab is calculated by formula (2) and formula (3) again R1, R2 and R3 are respectively R1=
8.1mm, R2=4.1mm, R3=6.1mm (thickness retains two effective digitals).Using existing milling train, as shown in figure 3, but its roll
The geomery of roller should meet the design shape size of the plate, i.e. two rolls part corresponding with two connectors to be welded up and down
Equipped with arc groove corresponding with the design shape size of the plate, then by plate be placed in 6 slab rolling position 5 of roller system into
Rolling before row welding obtains the plate that both ends have arc convex；There is the plate edge of arc convex to roll the both ends of acquisition
Direction processed is cut from centre, obtains two pieces of slab A7 and B8 to welding, as shown in figure 4, will be by rolling using argon tungsten-arc welding
Corresponding two arc convex of two boards base afterwards carry out welding, slab 9 after the end socket welding of welding connector are made, such as Fig. 5
It is shown, and along weld seam symmetrical machining at the circle of required size.By 3 polishing grinding of welding point, using end socket drawing and forming mould
Tool carries out drawing and forming to the end socket welding slab of welding connector；End socket after drawing and forming is subjected to subsequent processing, is made
Round built up head 10, as shown in Figure 6.Through wall-thickness measurement deviation ratio less than 5%, less than the drawing without shape design improvement at
The wall thickness deviation rate 18% of shape end socket.
Embodiment 3
Process the 316L austenite stainless steel plate end socket with a thickness of 10mm.Welding is calculated according to formula (1) first to connect
The width of head heat affected area 2 is 7mm.The ruler of R1, R2 and R3 of the welding slab is calculated by formula (2) and formula (3) again
It is very little to be respectively, R1=9.1mm, R2=4.6mm, R3=6.8mm (thickness retains two effective digitals).Using existing milling train, such as
Shown in Fig. 3, but the geomery of its roll should meet the design shape size of the plate, i.e. two rolls and two to be welded up and down
The corresponding part of connector is equipped with arc groove corresponding with the design shape size of the plate, and plate is then placed in roller system 6
Slab rolling position 5 carries out the rolling before welding, obtains the plate that both ends have arc convex；The both ends of acquisition had into arc
The plate of protrusion is cut along rolling direction from centre, two pieces of slab A7 and B8 to welding is obtained, as shown in figure 4, using tungsten electrode argon
Corresponding two arc convex of two boards base after rolling are carried out welding by arc-welding, and the end socket welding of welding connector is made
Slab 9 afterwards, as shown in figure 5, and along weld seam symmetrical machining at the circle of required size.By 3 polishing grinding of welding point, using envelope
Head drawing and forming mold carries out drawing and forming to the end socket welding slab of welding connector；End socket after drawing and forming is carried out
Round built up head 10 is made, as shown in Figure 6 in subsequent processing.Through wall-thickness measurement deviation ratio less than 5%, set less than without shape
Count the wall thickness deviation rate 19% of the drawing and forming end socket of transformation.
Claims (1)
1. a kind of welding plate stamping and forming end socket welding heat affected zone wall thickness control method, it is characterised in that:
1) according to the forming requirements of different-thickness large container 316L austenitic stainless steel end socket, it is first determined after the completion of welding
Connector heat affected area width is determined when plate thickness is less than or equal to 5mm, connector heat affected area by finite element modelling and test
Width is calculated by 5mm, when plate thickness is greater than 5mm, calculates heat affected area width H according to following formula；
H=5+0.2t (1)
2) it according to calculated heat affected area width, determines the size of plate before welding, and then wlding is designed；Pass through public affairs
Shape design circular arc and slab radius R can be calculated in formula (2)1, and then shape is calculated by formula (3) and is set
Count circular arc and weld seam radius R2And shape designs arc radius R3:
H=R1·cos40° (2)
R1: R2: R3=4:2:3 (3)
H in formula --- connector heat affected area width, unit mm,
T --- welding plate thickness, unit mm,
R3--- shape design arc radius, unit mm,
R1--- the radius of shape design circular arc and slab, unit mm,
R2--- the radius of shape design circular arc and weld seam, unit mm,
The R being calculated by above-mentioned formula1、R2、R3The circular arc of composition is all tangent connection；
3) the existing milling train of utilization, but the geomery of its roll should meet the design shape size of the plate, i.e., and upper and lower two roll
Roller and the corresponding part of two connectors to be welded are equipped with arc groove corresponding with the design shape size of the plate, then carry out
Rolling before welding obtains the plate that both ends have arc convex；
4) there is the plate of arc convex to cut along rolling direction from centre the both ends of acquisition, two boards base is obtained, using tungsten
Corresponding two arc convex of two boards base after rolling are carried out welding by electrode argon arc welding, and the end socket of welding connector is made
Welding slab, and along weld seam symmetrical machining at the circle of required size；
5) by welding point polishing grinding, using end socket drawing and forming punch-die mold, to the end socket tailor welded of welding connector
Base carries out drawing and forming；
6) drawing and forming rear head is subjected to subsequent processing, circular head is made.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710682270.9A CN107511567B (en) | 2017-08-10 | 2017-08-10 | A kind of welding plate stamping and forming end socket welding heat affected zone wall thickness control method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710682270.9A CN107511567B (en) | 2017-08-10 | 2017-08-10 | A kind of welding plate stamping and forming end socket welding heat affected zone wall thickness control method |
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| CN107511567B true CN107511567B (en) | 2019-06-25 |
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| CN108372387A (en) * | 2017-01-04 | 2018-08-07 | 中国航空制造技术研究院 | A kind of engine blade patching type restorative procedure |
| CN112935481B (en) * | 2021-03-31 | 2022-07-26 | 沈阳大学 | Argon arc welding process for 1800 MPa-level ultrahigh-strength hot-formed steel plate |
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| CN101354731B (en) * | 2008-02-19 | 2010-06-23 | 江苏大学 | Method for establishing and using difference thick laser assembly solder plate forming limit picture |
| KR101277995B1 (en) * | 2011-06-28 | 2013-06-27 | 현대제철 주식회사 | Method for analyzing twb forming |
| CN102756242A (en) * | 2012-06-26 | 2012-10-31 | 江苏天成封头有限公司 | Method for welding carbon steel heads |
| CN104607524B (en) * | 2014-12-31 | 2016-08-24 | 哈尔滨工业大学 | The tailor welded integral drawing forming device of a kind of large-scale curved part and method |
| CN105344790B (en) * | 2015-12-15 | 2017-07-25 | 北京航星机器制造有限公司 | Aluminium alloy thin-walled dome head integral forming method |
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Effective date of registration: 20191226 Address after: An Shan Zhen Wan Zhuang Cun Nan, Changli County, Qinhuangdao City, Hebei Province 066000 Patentee after: Hebei Tianjian steel structure Limited by Share Ltd Address before: Hebei Street West Harbor area, 066004 Hebei city of Qinhuangdao province No. 438 Patentee before: Yanshan University |