CN110026647A - The butt welding method and interfacing part of single side composite plate - Google Patents
The butt welding method and interfacing part of single side composite plate Download PDFInfo
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- CN110026647A CN110026647A CN201910284530.6A CN201910284530A CN110026647A CN 110026647 A CN110026647 A CN 110026647A CN 201910284530 A CN201910284530 A CN 201910284530A CN 110026647 A CN110026647 A CN 110026647A
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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
- B23K9/00—Arc welding or cutting
- B23K9/02—Seam welding; Backing means; Inserts
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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
- B23K9/00—Arc welding or cutting
- B23K9/23—Arc welding or cutting taking account of the properties of the materials to be welded
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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
- B23K9/00—Arc welding or cutting
- B23K9/235—Preliminary treatment
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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
- B23K9/00—Arc welding or cutting
- B23K9/32—Accessories
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Abstract
The invention discloses the butt welding method and interfacing part of a kind of single side composite plate, butt welding method includes: S1, the respectively bevel at the docking of two single side composite plates；S2, two single side composite plates are docked with groove, groove docks to form double V groove；S3, most narrow place's welding in double V groove using the first low-alloy steel electrode form prime coat；S4, using the welding in prime coat opposite sides in turn of the second low alloy steel welding rod, form the first connection layer and connect the low-alloy steel layer of face；S5, welding on layer is connected first using the first austenite stainless steel-made welding rod, forms transition layer；S6, using the welding on transition layer of the second austenite stainless steel-made welding rod, form the second connection layer and connect the austenite stainless steel layer of face.The present invention realizes the docking between single side composite plate using the manual electric arc welding mode of double V groove, meets in different location, different welding places, limited operating space to the welding demand of composite plate.
Description
Technical field
The present invention relates to the butt welding methods and docking of composite metal plate technical field more particularly to a kind of single side composite plate
Part.
Background technique
304L stainless steel (typical ultra-low carbon austenitic stainless steel) is that a kind of Ultra-low carbon of the standard model of versatility is difficult to understand
Family name's body stainless steel is widely used for requiring have the equipment of comprehensive performances such as corrosion-resistant and good mouldability and the manufacture of parts
In.The crystal structure of 304L stainless steel is face-centered cubic crystal structure, and the carbon content no more than 0.030% makes 304L austenite
Stainless steel has good welding performance.Lower carbon content makes the chromium carbide being precipitated in the heat affected area close to weld seam
It is reduced to minimum (and the precipitation of chromium carbide, it is chromium depleted to will lead to stainless steel, generates intercrystalline corrosion).
10CrNi3MoV low-alloy steel is Tempering and Quenching steel, is heat-treated by quenching+tempering and obtains high-strength and high ductility machinery
Performance.10CrNi3MoV low alloy steel plate typical case's mechanical property of actual production are as follows: yield strength 650Mpa, tensile strength are
700Mpa, -84 DEG C of ballistic works are 200J, and fiber cross-sectional rate is 90% or more.Meanwhile 10CrNi3MoV low-alloy steel belongs to low-carbon
Welding structural alloy steel is suitable for pressure hull structure.The main application of 10CrNi3MoV low-alloy steel are as follows: pressure resistance
Shell, naval vessel steel construction etc..
In past routine nuclear power facility, suppression pool component raw material has selected carbon steel sheet+corrosion-inhibiting coating method.Using
Such method disadvantageously, since the service life of corrosion-inhibiting coating is shorter, needs irregular examination and maintenance to guarantee anti-corrosion
The integrality and corrosion resistance of coating, this prolonged placement is applied in the small-sized nuclear reactor of ocean platform have it is many unfavorable.Cause
This, it is necessary to develop the composite plate and its welding side of a kind of 304L austenitic stainless steel in conjunction with 10CrNi3MoV low-alloy steel
Method, for the manufacture of suppression pool component etc., this is to lifting means service life, the damage of reduction related personnel's nuclear radiation, reduction equipment system
Sheet, shortening device fabrication period is caused to play significance.
Summary of the invention
The technical problem to be solved in the present invention is that provide it is a kind of realize different welding positions welding and it is easily operated
Interfacing part made of the butt welding method of single side composite plate and the butt welding method.
The technical solution adopted by the present invention to solve the technical problems is: providing a kind of butt welding side of single side composite plate
Method, comprising the following steps:
S1, the respectively bevel at the docking of two single side composite plates；
The single side composite plate includes low-alloy steel layer and to be compounded in the low-alloy steel by explosive welding laminated
On austenite stainless steel layer；
S2, two single side composite plates are docked with groove, the groove of two single side composite plates docks shape
At double V groove；
The two sides in double V groove, austenite stainless steel layer and austenite stainless steel layer face, low-alloy steel layer and low-alloy
Steel layer face；
S3, most narrow place's welding in the double V groove using the first low-alloy steel electrode form prime coat；
S4, using the welding in the prime coat opposite sides in turn of the second low-alloy steel electrode, form the first connection weldering
Layer connects the low-alloy steel layer of face；
S5, welding on layer is connected described first using the first austenite stainless steel-made welding rod, forms transition layer, covering
The linkage interface of austenite stainless steel layer and low-alloy steel layer in the double V groove；
S6, using the welding on the transition layer of the second austenite stainless steel-made welding rod, forming the second connection layer will just
Pair austenite stainless steel layer connection.
Preferably, in step S1, at the single side composite plate docking on the groove that is arranged there is root face；The root face length
For 1mm-2mm；
In step S2, after docking, the root face of the groove of two single side composite plates is opposite to be formed in the double V groove
Most narrow place；The width at most narrow place is 1mm-3mm in the double V groove.
Preferably, in step S2, unfitness of butt joint≤0.5mm of two single side composite plate docking.
Preferably, in step S2, the angle of the double V groove is 60 ° ± 10 °.
Preferably, in the single side composite plate, low-alloy steel layer with a thickness of 10-35mm, the austenite stainless steel layer
With a thickness of 3-6mm.
Preferably, in the single side composite plate, austenite stainless steel layer is 304L stainless steel plate, and low-alloy steel layer is
10CrNi3MoV low alloy steel plate；
First low-alloy steel electrode and the second low-alloy steel electrode are 10CrNi3MoV low-alloy steel electrode；It is described
First austenite stainless steel-made welding rod is E309L austenite stainless steel-made welding rod, the second austenite stainless steel-made welding rod E308L Ovshinsky
Body stainless steel electrode.
Preferably, in step S3, the welding current of prime coat described in welding is 90-120A, speed of welding 200-
210mm/min；
In step S4, the welding current of the first connection layer is 150-170A, speed of welding 190- described in welding
195mm/min；
In step S5, the welding current of transition layer described in welding is 90-120A, speed of welding 230-240mm/min；
In step S6, the welding current of the second connection layer is 150-170A, speed of welding 170- described in welding
175mm/min。
Preferably, in step S4, in the double V groove, the first connection layer fills the double V groove first end
Extremely close to the surface of low-alloy steel layer, and the opposite second end of the double V groove is filled to close to austenite stainless steel layer；
Weld it is described first connection layer after, using the second low-alloy steel electrode the double V groove first end institute
Welding on the first connection layer is stated, cap weld is formed and connects the surface of two opposite low-alloy layers.
Preferably, the welding current of cap weld described in welding is 160-180A, speed of welding 170-175mm/min.
Preferably, the butt welding method of the single side composite plate further include:
S7, two single side composite plates are surface-treated and are heat-treated.
The present invention also provides a kind of interfacing parts, including what is be connected as one by butt welding method described in any of the above embodiments
Two single side composite plates.
The butt welding method of single side composite plate of the invention, single side composite plate are that austenitic stainless steel-low-alloy steel is compound
Plate belongs to high-strength and high-ductility clad steel plate；It is realized between single side composite plate using manual electric arc welding (SMAW) mode of double V groove
Docking, meet in different location, different welding place, limited operating space to the welding demand of composite plate, while making pair
Meeting place has high intensity, the corrosion resisting property for being no less than base material (austenitic stainless steel, low-alloy steel), guarantees to have at docking enough
Reliability and safety meet nuclear power, chemical industry, shipping industry and height suitable for the processing and manufacturing of suppression pool component etc.
Hold the development need of equipment.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples, in attached drawing:
Fig. 1 is (welding when two single side composite plates are docked in the butt welding method of the single side composite plate of one embodiment of the invention
Before) structural schematic diagram；
Fig. 2 is two single side composite plates docking in the butt welding method of the single side composite plate of one embodiment of the invention (after welding)
Structural schematic diagram.
Specific embodiment
For a clearer understanding of the technical characteristics, objects and effects of the present invention, now control attached drawing is described in detail
A specific embodiment of the invention.
With reference to Fig. 1,2, the butt welding method of the single side composite plate of one embodiment of the invention, comprising the following steps:
S1, the respectively bevel at the docking of two single side composite plates 100.
Two single side composite plates 100 are austenitic stainless steel-low-alloy steel composite plate, include low-alloy on structure sheaf
Steel layer 101, the austenite stainless steel layer 102 being compounded in by explosive welding in 101 one side of low-alloy steel layer.Low-alloy steel layer
101 thickness can be 10-35mm, and the thickness of austenite stainless steel layer 102 can be 3-6mm.
Specifically, low-alloy steel layer 101 is 10CrNi3MoV low alloy steel plate, and austenite stainless steel layer 102 is 304L difficult to understand
Family name's body stainless steel plate.
S2, two single side composite plates 100 are docked with groove, the groove of two single side composite plates 100 docks to form X
Shape groove 20.
It wherein, is the inverted V-shaped with root face 21 by the groove that machining is formed in each single side composite plate 100
(" > " shape), two inverted V-shaped grooves dock to form double V groove 20.The opposite sides in double V groove 20, austenite stainless steel layer
102 with 102 face of austenite stainless steel layer, low-alloy steel layer 101 and 101 face of low-alloy steel layer.
21 length of root face of groove is 1mm-2mm in each single side composite plate 100.21 phase of root face of two inverted V-shaped grooves
To the most narrow place for forming double V groove 200, the width at the most narrow place is 1mm-3mm.Further, since the thickness of low-alloy steel layer 101
Greater than the thickness of austenite stainless steel layer 102, the root face 21 of groove is located in low-alloy steel layer 101.
To be 6.3 μm convenient for the surface roughness of subsequent welding, the groove of each single side composite plate 100, rough surface
Degree can according to circumstances increase and decrease.
The unfitness of butt joint of two single side composite plates 100 docking answers strict control≤0.5mm.
Furthermore, it is alternatively that, the angle [alpha] of double V groove 200 can be 60 ° ± 10 °, and the angle of bevel can be 30 °
±5°。
S3, most narrow place's welding in double V groove 200 using the first low-alloy steel electrode form prime coat.Prime coat can be with
One layer or more, whole thickness can >=length of root face 21.Prime coat is in the institute such as in Fig. 2 of the position in double V groove 200
Show serial number 1,2.
According to prime coat welding at the most narrow place of double V groove 200, welding, using lesser first low-alloy steel of diameter
For welding rod with the progress of lower welding current, crescent transports arc, first welds in positive bottoming, then after back root cleaning.
Alternatively, the welding current of welding prime coat is 90-120A, speed of welding 200-210mm/min.
S4, using the welding in prime coat opposite sides in turn of the second low-alloy steel electrode, forming the first connection layer will
The low-alloy steel layer 101 of face connects.
In two sides, the purpose of welding (jump welding) is to realize that deformation caused by the welding of two sides is as mutual as possible in turn
It offsets, reduces welding deformation especially angular deformation, and reduce residual stress.
Double V groove 200 includes opposite first end and second end.When welding, exist in turn from 200 both ends open of double V groove
The first end and second end of double V groove 200 is filled in welding on prime coat two sides.
Specifically, in double V groove 200, the first connection layer fills 200 first end of double V groove to close to low-alloy steel
The surface (serial number 3,7,8 as shown in Figure 2) of layer 101, and filling 200 second end of double V groove is to close to austenitic stainless steel
102 (serial number 4,5,6 as shown in Figure 2) of layer.
The first connection layer in the every one end of double V groove 200 is multilayer.
Alternatively, it is 150-170A, speed of welding 190-195mm/ that welding first, which connects the welding current of layer,
min。
In the second end of double V groove 200, the first connection layer is close to austenite stainless steel layer 102, the first connection layer
Surface and austenite stainless steel layer 102 between reserve interval appropriate, to carry out the welding of subsequent transition layer.
After welding first connects layer, the first connection using the second low-alloy steel electrode in double V groove first end is welded
Welding on layer forms cap weld (serial number 11,12 as shown in Figure 2) and connects the surface of two opposite low-alloy layers 101.
The welding current of welding cap weld is 160-180A, speed of welding 170-175mm/min.
The position of first low-alloy steel electrode and the second low-alloy steel electrode welding is mainly low-alloy steel layer 101, therefore
The welding rod of material consistent with its is selected to carry out welding.For example, the low-alloy steel layer 101 of corresponding single side composite plate 100 is
10CrNi3MoV low-alloy steel, the first low-alloy steel electrode and the second low-alloy steel electrode are the weldering of 10CrNi3MoV low-alloy steel
Item.
According to the of different size of prime coat and the first connection layer welding position, the diameter of the first low-alloy steel electrode compared with
The diameter of second low-alloy steel electrode is small.For example, the diameter of the first low-alloy steel electrode is 3.2mm, the second low-alloy steel electrode
Diameter be 4mm.
It when welding the first connection layer, welds after its first layer, back chipping and the last layer, progress PT (Liquid Penetrant inspection
It surveys).
S5, welding on layer is connected first using the first austenite stainless steel-made welding rod, forms transition layer, covers X-shaped
The linkage interface (serial number 9,10 as shown in Figure 2) of austenite stainless steel layer 102 and low-alloy steel layer 101 in groove 200.Postwelding
Carry out PT.
Alternatively, the welding current of welding transition layer is 90-120A, speed of welding 230-240mm/min.
The welding formation of above-mentioned cap weld can carry out before transition layer, can also be in the laggard of transition layer
Row.
S6, using the welding on transition layer of the second austenite stainless steel-made welding rod, form the second connection layer for face
Austenite stainless steel layer 102 connects (serial number 13,14 as shown in Figure 2).Postwelding carries out PT.
Alternatively, it is 150-170A, speed of welding 170-175mm/ that welding second, which connects the welding current of layer,
min。
The position of second austenite stainless steel-made welding rod welding is mainly austenite stainless steel layer 102, corresponding austenite stainless
Steel layer 102 is 304L austenite stainless steel plate, and the second austenite stainless steel-made welding rod uses E308L austenite stainless steel-made welding rod.The
One austenite stainless steel-made welding rod welding forms transition layer, uses E309L austenite stainless steel-made welding rod, plays and connects to first
The transition connection function of layer and the second connection layer.
In above-mentioned butt-welding process, carry out prime coat, first connection layer, second connection layer, transition layer with
And the equal crescent of welding of each layer of cap weld transports arc, controls interlayer temperature≤120 DEG C in welding.
After the completion of above-mentioned steps S1-S6, two docking of single side composite plate 100 are integrated.
Further, the butt welding method of single side composite plate of the invention further include:
S7, two single side composite plates 100 are surface-treated and are heat-treated.
Surface treatment will mainly carry out polishing and polish processing at two 100 docking of single side composite plate, so that the table at docking
The flush of the two single side composite plates 100 in face.
Annealing is mainly used for eliminating two single side composite plates 100 residual stress after welding.When annealing, annealing
Temperature is 550 DEG C -650 DEG C.Specifically, two single side composite plates 100 of docking are heated slowly to 550 DEG C -650 DEG C, and protect
The warm regular hour, then it is cooling with Reasonable Speed.
In conjunction with Fig. 2, in the butt welding method of the single side composite plate of this implementation, each layer welding process design parameter such as the following table 1 is extremely
Shown in table 3.
The welding parameter of 1. prime coat of table, the first articulamentum and cap weld
1, PT is carried out after 2 layers and back chipping, needs to clear up upper one of weld seam with wire brush before per pass weldering.Welding bead 5 with
6,7 and 8 postweldings carry out PT.
The welding parameter of 2. transition layer of table
It needs to clear up upper one of weld seam with wire brush before per pass weldering.Postwelding carries out PT.
The welding parameter of the connection layer of table 3. second
It needs to clear up upper one of weld seam with wire brush before per pass weldering.Postwelding carries out PT and RT.
Single side composite plate after the present embodiment butt welding is tested for the property, as a result as shown in table 4 below.
Table 4.
Wherein, single side composite plate austenite stainless steel layer cladding participates in Strength co-mputation, and tensile strength presses following public affairs at docking
Formula 1-1 is calculated as >=636MPa:
In formula: Rm1-low-alloy layer tensile strength lower limit standard value, MPa；GJB1663A standard value 655MPa.
Rm2-austenite stainless steel layer tensile strength lower limit standard value, MPa；SA-240 standard value 485MPa.
T1-low-alloy thickness degree, mm；Low-alloy layer nominal thickness 32mm.
T2-austenitic stainless steel thickness degree, mm；Austenite stainless steel layer nominal thickness 4mm.
According to GJB1663A, base material ballistic work lower limit value is 80J.
With reference to Fig. 2, interfacing part made from the butt welding method of single side composite plate of the invention, including in linear type connection
Two single side composite plates 100.Two single side composite plates 100 of docking, the respectively relatively close, Ovshinsky with low-alloy steel layer 101
Body stainless steel layer 102 is relatively close.
The butt welding of two single side composite plates 100 realizes that the high-strength metallurgical of the two combines, constrain suitable for reactor
Pool structure part etc. can also be widely used in chemical industry, marine ship, nuclear power other equipment manufacturing field.
The above description is only an embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure or equivalent flow shift made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant skills
Art field, is included within the scope of the present invention.
Claims (11)
1. a kind of butt welding method of single side composite plate, which comprises the following steps:
S1, the respectively bevel at the docking of two single side composite plates；
The single side composite plate include low-alloy steel layer and by explosive welding be compounded in the low-alloy steel it is laminated on
Austenite stainless steel layer；
S2, two single side composite plates are docked with groove, the groove of two single side composite plates docks to form X-shaped
Groove；
The two sides in double V groove, austenite stainless steel layer and austenite stainless steel layer face, low-alloy steel layer and low-alloy steel
Layer face；
S3, most narrow place's welding in the double V groove using the first low-alloy steel electrode form prime coat；
S4, using the welding in the prime coat opposite sides in turn of the second low-alloy steel electrode, forming the first connection layer will
The low-alloy steel layer of face connects；
S5, using the welding on the first connection layer of the first austenite stainless steel-made welding rod, transition layer is formed, described in covering
The linkage interface of austenite stainless steel layer and low-alloy steel layer in double V groove；
S6, using the welding on the transition layer of the second austenite stainless steel-made welding rod, form the second connection layer for face
The connection of austenite stainless steel layer.
2. the butt welding method of single side composite plate according to claim 1, which is characterized in that in step S1, the single side
The groove being arranged at composite plate docking has root face；The root face length is 1mm-2mm；
It is most narrow in the opposite formation double V groove of the root face of the groove of two single side composite plates after docking in step S2
Place；The width at most narrow place is 1mm-3mm in the double V groove.
3. the butt welding method of single side composite plate according to claim 1, which is characterized in that in step S2, described in two
Unfitness of butt joint≤0.5mm of single side composite plate docking.
4. the butt welding method of single side composite plate according to claim 1, which is characterized in that in step S2, the X-shaped slope
The angle of mouth is 60 ° ± 10 °.
5. the butt welding method of single side composite plate according to claim 1, which is characterized in that in the single side composite plate,
Low-alloy steel layer with a thickness of 10-35mm, the austenite stainless steel layer with a thickness of 3-6mm.
6. the butt welding method of single side composite plate according to claim 1, which is characterized in that in the single side composite plate,
Austenite stainless steel layer is 304L stainless steel plate, and low-alloy steel layer is 10CrNi3MoV low alloy steel plate；
First low-alloy steel electrode and the second low-alloy steel electrode are 10CrNi3MoV low-alloy steel electrode；Described first
Austenite stainless steel-made welding rod is E309L austenite stainless steel-made welding rod, and the second austenite stainless steel-made welding rod E308L austenite is not
Become rusty steel electrode.
7. the butt welding method of single side composite plate according to claim 1, which is characterized in that in step S3, described in welding
The welding current of prime coat is 90-120A, speed of welding 200-210mm/min；
In step S4, the welding current of the first connection layer is 150-170A, speed of welding 190-195mm/ described in welding
min；
In step S5, the welding current of transition layer described in welding is 90-120A, speed of welding 230-240mm/min；
In step S6, the welding current of the second connection layer is 150-170A, speed of welding 170-175mm/ described in welding
min。
8. the butt welding method of single side composite plate according to claim 1, which is characterized in that in step S4, in the X-shaped
In groove, the first connection layer fills the double V groove first end to the surface close to low-alloy steel layer, and filling institute
The opposite second end of double V groove is stated to close to austenite stainless steel layer；
After welding the first connection layer, using the second low-alloy steel electrode described the of the double V groove first end
Welding on one connection layer, forms cap weld and connects the surface of two opposite low-alloy layers.
9. the butt welding method of single side composite plate according to claim 8, which is characterized in that cap weld described in welding
Welding current is 160-180A, speed of welding 170-175mm/min.
10. the butt welding method of -9 described in any item single side composite plates according to claim 1, which is characterized in that the single side
The butt welding method of composite plate further include:
S7, two single side composite plates are surface-treated and are heat-treated.
11. a kind of interfacing part, which is characterized in that including being connected as by the described in any item butt welding methods of claim 1-10
Two single side composite plates of one.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111112795A (en) * | 2020-01-20 | 2020-05-08 | 中车四方车辆有限公司 | Welding method for vertical pipe butt joint annular welding seam |
| CN115283800A (en) * | 2022-08-31 | 2022-11-04 | 中国铁建大桥工程局集团有限公司 | Welding method for double-metal high-strength composite bridge steel X-shaped joint |
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| CN115283800A (en) * | 2022-08-31 | 2022-11-04 | 中国铁建大桥工程局集团有限公司 | Welding method for double-metal high-strength composite bridge steel X-shaped joint |
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