CN109048104A - A kind of steel multi-pass tempering overlaying method - Google Patents
A kind of steel multi-pass tempering overlaying method Download PDFInfo
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- CN109048104A CN109048104A CN201810935946.5A CN201810935946A CN109048104A CN 109048104 A CN109048104 A CN 109048104A CN 201810935946 A CN201810935946 A CN 201810935946A CN 109048104 A CN109048104 A CN 109048104A
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- weld groove
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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
- B23K31/02—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 soldering or welding
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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
- B23K33/00—Specially-profiled edge portions of workpieces for making soldering or welding connections; Filling the seams formed thereby
- B23K33/004—Filling of continuous seams
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
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- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
- Arc Welding In General (AREA)
Abstract
The invention discloses a kind of steel multi-pass to be tempered overlaying method, built-up welding is tempered using multi-pass, a time welding bead metal tempering before inducing the welding stage, and tempering temperature is uniform, structure organization obtained by being similar to post weld heat treatment may be implemented, so that welding bead metal is effectively promoted toughness, lower bead hardness and its neighbouring residual stress, the shape and size of rock-steady structure reduce distortion.
Description
Technical field
The present invention relates to industrial welding technical fields, particularly relate to a kind of steel multi-pass tempering overlaying method.
Background technique
The welding manner that generally uses in welding steel of tradition, can make that welding bead is metal heated and cooling temperature is uneven, such as
This one will cause the change of weld structure, increase hardness, toughness decline, be easy in happen suddenly stress or impact stress when
It causes weld to be broken, influences integrally-built safety.
Refering to Figure 1, it can be clearly seen from the figure that, when steel plate A when welding, lie in V-shaped groove A1 to melt filling chock
Expect B filling, and then is formed with the welding bead metal (B1~B4) of multilayer, since V-shaped groove A1 is larger close to the area of opening, therefore,
Closer to the welding bead metal (B1~B4) of V-shaped groove A1 opening, weld passage (B21~B41) it is more, allow welding bead metal (B1
~B4) to generate heated and cooling temperature uneven, and increase its hardness, toughness decline is easy to answer in burst stress or impact
It causes weld to be broken when power, influences integrally-built safety.
Therefore, the present inventor needs to conceive a kind of new technology to improve its problem.
Summary of the invention
The present invention is intended to provide a kind of steel multi-pass is tempered overlaying method, can use before the induction of welding stage one
Secondary welding bead metal tempering, and tempering temperature is uniform, and structure organization obtained by being similar to post weld heat treatment may be implemented, make to weld
Road metal effectively promotes toughness, lowers welding bead and its neighbouring residual stress, and the shape and size of rock-steady structure reduce distortion.
In order to solve the above technical problems, the technical scheme is that
A kind of steel multi-pass tempering overlaying method, comprising:
Thick steel plate and weld groove, weld groove includes upper weld groove and lower weld groove, when thick steel plate carries out multi-pass tempering built-up welding,
Built-up welding system carries out according to the following steps:
(A) metal is melted into filling chock material and inserts upper weld groove formation welding bead metal；
(B) the welding bead metal of weld groove is made to be exposed to lower weld groove；
(C) metal is melted into filling chock material and inserts lower weld groove formation welding bead metal；
(D) metal is sequentially melted filling chock material repeatedly to insert in upper weld groove and lower weld groove, makes the weldering in weld groove and lower weld groove
Road metal formation layer changes shape, and the welding bead metal surface area of outer layer is greater than the welding bead metal surface area of internal layer.
Preferably, thick steel plate is provided with the first thick steel plate, the second thick steel plate, and first thick steel plate and the second thick steel plate are water
Flat adjoins setting, and one first scarf is formed with above first thick steel plate one end, and one second is formed with below the same end tiltedly
Section, and one first root is formed between the first scarf and the second scarf, it is formed above second thick steel plate one end
There is a third scarf, is formed with one the 4th scarf below the same end, and the shape between third scarf and the 4th scarf
The second root Cheng Youyi, and the first root and the second root are when mutually offseting, the first scarf is formed as with third scarf
Weld groove on first, the second scarf and the 4th scarf are formed as the first lower weld groove, are tempered built-up welding when thick steel plate carries out multi-pass
When, built-up welding system carries out according to the following steps:
(A) metal is melted into weld groove in filling chock material filling first and forms welding bead metal；
(B) the first root and the second root are removed, the welding bead metal of weld groove on first is made to be exposed to the first lower weld groove；
(C) metal is melted into the lower weld groove of filling chock material filling first and forms welding bead metal；
(D) repeatedly sequentially by metal melt in filling chock material filling first weld groove in the first lower weld groove, make on first weld groove and
Welding bead metal formation layer in first lower weld groove changes shape, and outer layer welding bead metal surface area is greater than internal layer welding bead metal surface area.
Preferably, the first thick steel plate of the thick steel plate and the plate thickness of the second thick steel plate are all larger than or are equal to 40mm.
Preferably, the width of the second root of the first root and the second thick steel plate of first thick steel plate, is all fixed on
2mm。
Preferably, which is provided with third thick steel plate, the 4th thick steel plate, and third thick steel plate is with the 4th thick steel plate
Horizontal adjoins setting, and third thick steel plate one end is equipped with a basal plane, lies in above the 4th thick steel plate one end and is formed with one the 5th tiltedly
Section, the same end lower section is formed with one the 6th scarf, and is formed with a third between the 5th scarf and the 6th scarf
Root, and basal plane and third root are when mutually offseting, basal plane and the 5th scarf are formed as weld groove on second, basal plane and the 6th
Scarf is formed as the second lower weld groove, and when thick steel plate carries out multi-pass tempering built-up welding, built-up welding system carries out according to the following steps:
(A) metal is melted into weld groove in filling chock material filling second and forms welding bead metal；
(B) third root is removed, the welding bead metal of weld groove on second is made to be exposed to the second lower weld groove；
(C) metal is melted into the lower weld groove of filling chock material filling second and forms welding bead metal；
(D) repeatedly sequentially by metal melt in filling chock material filling second weld groove in the second lower weld groove, make on second weld groove and
Welding bead metal formation layer in second lower weld groove changes shape, and outer layer welding bead metal surface area is greater than internal layer welding bead metal surface.
Preferably, the third thick steel plate of the thick steel plate and the plate thickness of the 4th thick steel plate are all larger than or are equal to 40mm.
Preferably, the width of the third root of the 4th thick steel plate, is fixed on 2mm.
By adopting the above technical scheme, the present invention include at least it is following the utility model has the advantages that
Steel multi-pass of the present invention is tempered overlaying method, the welding bead metal of a time before being induced using the welding stage
Tempering, and tempering temperature is uniform, and structure organization obtained by being similar to post weld heat treatment may be implemented, mention welding bead metal effectively
Toughness is risen, welding bead and its neighbouring residual stress are lowered, the shape and size of rock-steady structure reduce distortion.
Detailed description of the invention
Fig. 1 be in the prior art welding steel when welding schematic diagram.
Fig. 2 is the welded steel process schematic in one embodiment of the present invention.
Fig. 3 is the welded steel process schematic in one embodiment of the present invention.
Fig. 4 is the welded steel process schematic in one embodiment of the present invention.
Fig. 5 is the welded steel process schematic in one embodiment of the present invention.
Fig. 6 is the welded steel process schematic in one embodiment of the present invention.
Fig. 7 is the welded steel process schematic in one embodiment of the present invention.
Fig. 8 is the structural schematic diagram of the steel in one embodiment of the present invention.
Fig. 9 is the structural schematic diagram of the steel in another preferred embodiment of the present invention.
Figure 10 is the welding process schematic diagram of the steel in another preferred embodiment of the present invention.
Wherein: 1,3, thick steel plate
11, the first steel plate
111, the first scarf
112, the second scarf
113, the first root
12, the second steel plate
121, third scarf
122, the 4th scarf
123, the second root
2,4, weld groove
21, weld groove on first
(211,212,213,214), welding bead metal
22, the first lower weld groove
(221,222,223,224), welding bead metal
31, third thick steel plate
311, basal plane
32, the 4th thick steel plate
321, the 5th scarf
322, the 6th scarf
323, third root
41, weld groove on second
(411,412,413,414), welding bead metal
42, the second lower weld groove
(421,422,423,424), welding bead metal
A, steel plate
A1, V-shaped groove
B, filling chock material is melted
B1, B2, B3, B4, welding bead metal
B21, B31, B41, welding passage
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
In a preferred embodiment, please refer to shown in Fig. 8, it can be clearly seen from the figure that, the present invention include thick steel plate 1 and
Weld groove 2, wherein；
Thick steel plate 1 is provided with the first thick steel plate 11, the second thick steel plate 12, which is with the second thick steel plate 12
Horizontal adjoins setting, and one first scarf 111 is formed with above 11 one end of the first thick steel plate, is just formed under the same end
One second scarf 112, and one first root 113 is formed between the first scarf 111 and the second scarf 112, it lies in
It is formed with a third scarf 121 above second thick steel plate, 12 one end, one the 4th scarf 122 is just formed under the same end,
And one second root 123 is formed between third scarf 121 and the 4th scarf 122, and the first root 113 and second
Portion 123, when mutually to offset, the first scarf 111 is formed as weld groove 21 on first, the second scarf with third scarf 121
112 and the 4th scarf 122 be formed as the first lower weld groove 22, and weld groove slot 21 and weld groove 22 once are V-shape on first, above-mentioned
The first root 113 and the width of the second root 123 be all fixed on 2mm.
As shown in fig.2, it can be clearly seen from the figure that, metal is melted into weld groove 21 in filling chock material filling first, forms welding bead
Metal 211.
As shown in fig.3, it can be clearly seen from the figure that, in the first lower weld groove 22 using carbon-point by the first root 113 and the
It is removed at two roots, 123 docking, forms welding bead metal 211 with lower weld groove 22 and be connected to.
As shown in fig.4, it can be clearly seen from the figure that, metal is melted in the lower weld groove 22 of filling chock material filling first, weldering is formed
Road metal 221.
Refering to shown in Fig. 5 to Fig. 7, it can be clearly seen from the figure that, metal is melted into filling chock material and is completely covered by welding bead metal 211
Surface forms welding bead metal 212 on first, and the effect of tempering is caused to welding bead metal 211, and metal is recycled to melt filling chock material
It is completely covered by 221 surface of welding bead metal, forms welding bead metal 222, and generate back to the first lower 221 surface of welding bead metal
Metal is melted filling chock material and is completely covered by 212 surface of welding bead metal, forms welding bead metal 213, and to welding bead metal 212 by fire
It causes to be tempered, melts filling chock material using metal and be completely covered by 222 surface of welding bead metal, form welding bead metal 223, and for welding bead
Metal 222 generates tempering, then metal is melted filling chock material and is completely covered by welding bead metal 213, forms welding bead metal 214, and in weldering
Road metal 213 causes to be tempered, and melts filling chock material using metal and 223 surface of welding bead metal is completely covered, and forms welding bead metal 224, and
It is tempered welding bead metal 223, the height of every aforementioned welding bead metal is all identical.
Above-mentioned tempering, the tempering of welding bead metal may be implemented to be similar to obtained by post weld heat treatment before the induction of welding stage
To structure, so that welding bead is effectively promoted toughness, lower welding bead and its neighbouring residual stress, the shape and size of rock-steady structure subtract
Few distortion.
It is checked with microscopic structure, the present invention and the difference of both welding of technique in the prior art can observe weldering
Road and heat affected area show dramatically different microstructure.In 4 layer 4 of the welding bead welded out using the present invention, every layer
All there is closely similar microstructure, especially mainly needle-shaped ferrite and ferrite and a small amount of wave to carry out iron and be considered in hot shadow
Area is rung, it is opposite, in 4 layer 10 of the welding bead that technique is welded out in the prior art, there is the marquensite knot compared with fine grain
Structure, therefore increase its hardness and mechanical performance, cause 4 layer 10 of the welding bead that technique is welded out in the prior art, hardness
Rise, toughness decline.
Using metallographic microstructure and image analysis software image-pro plus, analyzes the present invention and weld out 4 layer 4
Welding bead metal.It is main microstructure with metallographic microstructure (a1-a2) ferrite F, in addition, some microcosmic group small
It knits, and wave carrys out iron P, becomes tough iron B, also can determine relatively small quantity, has used image analysis software Image-Pro Plus
(b1-b2) heat affected area is calculated with the presence of a large amount of needle-shaped ferrite AF, and Wei De graceful ferrite WF and Bo Lai iron P is opposite
It is less.According to a2 calculated result, becomes tough iron B about 48%, ferrite F about 39%, wave and carry out iron P about 13%, the knot calculated according to b2
The graceful ferrite WF about 25% of gynophore shape ferrite AF about 44%, Wei De, wave carry out iron P about 31%, in microstructure and engineering properties
Analysis aspect, the toughness of welding bead and corresponding circle of sensation can be promoted by increasing needle-shaped ferrite AF, it follows that welding manner of the invention
The step of it is welded is less, and cooling velocity is slower, makes it possible to obtain the content in the more preferably needle-shaped ferrite AF of welding bead.
The map for comparing 4 layer 4 of one (a) and (b) 4 layer of 10 weldment microhardness, in hardness shown in figure
Between the variation of relative contour hardness be used for corresponding to the gauge length of the test film: (a) 4 layer 4 and (b) 4 layer of 10 test piece from
Cross section cutting and surface polishing, then with the corrosion of 3% nital, to show weld bead shape and microstructure.Connector
Microhardness value be using a three rich HM-200 micro hardness testers, the residence time of load 9.8N and 15 second measures.Make
It is used to generate microhardness figure with Origin software, is more than 40 millimeters wide, high 18 millimeters of rectangle region with 1 millimeter of resolution ratio
Domain.In the two 4 layers 4 and 4 layers 10 of weldment test pieces, the microstructure of welding bead is made of wave come iron and ferrite,
This region obtains hardness number about 200-210HV.Hardness figure can clearly show that, 4 layer of 10 welding point hardness with higher.
Distance change of the hardness along the interior thickness line of weldment with 10mm away from center line.Hardness in base material and heat affected area seems
It is related with each more welding beads.Containing ferrite and a small amount of marquensite in 4 layer 10 of test piece, the tissue of heat affected area,
This explains in the close about 245HV of this zone hardness value.Meanwhile in the heat affected area and welding bead region of 4 layer of 4 weldment, because
By then welding the tempering of passage, so hardness has significant decrease.
Further illustrate difference of the present invention with known welding method for impact flexibility:
After the completion of the detection of non-demolition array ultrasonic, the property of connector shock-testing is tested according to ASTME-23
Standard.Charpy v-notch (CVN) test using 300-J Charpy impact machine tester (being manufactured by Feng Da Instrument Ltd.) into
Row is in 20 DEG C and -20 DEG C.Specimen size is 10 × 10 × 55 millimeters, 2 millimeters deeps, 45 ° of v-notch and 0.25 millimeter of point
Hold radius in the planar central of weldment test piece.Line electrode electro-discharge machining (WEDM) can accurately repeat to sample the precision of test piece
Tolerance is consistent with the rolling direction of steel plate.It is vertical with notch that transverse direction is breaking at each 4 layers of 4 and 4 layers of 10 test piece
In weldment surface, and respectively, the position of the recess is maintained at the position of each welding bead and heat affected area.
Experimentally, at least 3 impact experiment test pieces of each welding parameter are measured, its average value is then taken
It determines.Notch is from the position that the different piece of connector is extracted, respectively in two heat affected areas and welding bead.4 layer of 4 welding procedure
Under 20/-20 DEG C of test temperature, CVN energy value is respectively 153J/128J and 136J/114J right simultaneously for welding bead and heat affected area
It should be 153J/128Jand 136J/114J respectively at 20/20 DEG C in 4 layers of 10, CVN energy value.The CVN energy value is at 20 DEG C
With -20 DEG C of experimental temperature, it is respectively higher than using 4 layer of 4 welding procedure with welding bead test piece in 4 layer of 10 welding procedure
11.8/9.4%.Than 4 layer 10 welding procedure of CVN energy value of test piece in heat affected area, 4 layer of 4 welding procedure be respectively
High 8.8/11.4% or more.It has been observed that in the maximum CVN energy that 4 layer of 4 connector has, the heat that is mainly due in variation
Amount input, and establish thermal gradient.In particular, needle-shaped ferrite, which causes main phase refinement to be found to be, to be had to higher toughness.
Therefore, which clearly illustrates, needle-shaped ferrite tissue be it is ideal, can effectively improve toughness in welding bead.And by
Overlaying method is tempered by multi-pass provided by the present invention, welding bead can be made to obtain the content of more preferably needle-shaped ferrite AF.
In another preferred embodiment, it please refers to shown in Fig. 9, it can be clearly seen from the figure that, the present embodiment includes thick steel
Plate 3 and weld groove 4, wherein；
Thick steel plate 3 is provided with third thick steel plate 31, the 4th thick steel plate 32,32 plate of third thick steel plate 31 and the 4th thick steel plate
Thickness is all in 40mm or more, and third thick steel plate 31 and the 4th thick steel plate 32 are that horizontal adjoins setting, 31 one end of third thick steel plate
Equipped with a basal plane 311, lie in above 32 one end of the 4th thick steel plate and be formed with one the 5th scarf 321, under the same end it is rectangular at
There is one the 6th scarf 322, and is formed with a third root 323 between the 5th scarf 321 and the 6th scarf 322, and
Basal plane 311 and third root 323, when mutually to offset, basal plane 311 and the 5th scarf 321 are formed as weld groove 41 on second,
Basal plane 311 and the 6th scarf 322 are formed as the second lower weld groove 42, and above-mentioned 323 width of third root is all fixed on 2mm.
As shown in fig.10, it can be clearly seen from the figure that, metal is melted into weld groove 41 in filling chock material filling second, forms welding bead
Metal is melted in the lower weld groove 42 of filling chock material filling second, forms welding bead metal 421, metal is melted filling chock material and is covered completely by metal 411
It is placed on 411 surface of welding bead metal, forms welding bead metal 412 on second, and causes the effect of tempering to welding bead metal 411, then
Filling chock material is melted using metal and is completely covered by 421 surface of welding bead metal, forms welding bead metal 422, and to the second lower welding bead gold
Belong to 421 surfaces and generate tempering, metal is melted into filling chock material and is completely covered by 412 surface of welding bead metal, forms welding bead metal 413, and
And welding bead metal 412 is caused to be tempered, filling chock material is melted using metal and is completely covered by 422 surface of welding bead metal, forms welding bead gold
Belong to 423, and tempering is generated for welding bead metal 422, then metal is melted into filling chock material and is completely covered by welding bead metal 413, forms weldering
Road metal 414, and cause to be tempered in welding bead metal 413, filling chock material is melted using metal, and 423 surface of welding bead metal, shape is completely covered
At welding bead gold 4224, and it is tempered welding bead metal 423, the height of every aforementioned welding bead metal is all identical.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (7)
1. a kind of steel multi-pass is tempered overlaying method characterized by comprising
Thick steel plate and weld groove, weld groove includes upper weld groove and lower weld groove, when thick steel plate carries out multi-pass tempering built-up welding, built-up welding
System carries out according to the following steps:
(A) metal is melted into filling chock material and inserts upper weld groove formation welding bead metal；
(B) the welding bead metal of weld groove is made to be exposed to lower weld groove；
(C) metal is melted into filling chock material and inserts lower weld groove formation welding bead metal；
(D) metal is sequentially melted filling chock material repeatedly to insert in upper weld groove and lower weld groove, makes the welding bead gold in weld groove and lower weld groove
Category forms stacking shape, and the welding bead metal surface area of outer layer is greater than the welding bead metal surface area of internal layer.
2. steel multi-pass as described in claim 1 is tempered overlaying method, it is characterised in that: thick steel plate is provided with the first thick steel
Plate, the second thick steel plate, first thick steel plate and the second thick steel plate are that horizontal adjoins setting, in rectangular on first thick steel plate one end
The first scarf of Cheng Youyi, the same end lower section are formed with one second scarf, and between the first scarf and the second scarf
It is formed with one first root, is formed with a third scarf above second thick steel plate one end, one the is formed with below the same end
Four scarves, and one second root is formed between third scarf and the 4th scarf, and the first root and the second root
When mutually to offset, the first scarf and third scarf are formed as weld groove on first, the second scarf and the 4th scarf shape
As the first lower weld groove, when thick steel plate carries out multi-pass tempering built-up welding, built-up welding system carries out according to the following steps:
(A) metal is melted into weld groove in filling chock material filling first and forms welding bead metal；
(B) the first root and the second root are removed, the welding bead metal of weld groove on first is made to be exposed to the first lower weld groove；
(C) metal is melted into the lower weld groove of filling chock material filling first and forms welding bead metal；
(D) metal is sequentially melted weld groove and first in filling chock material filling first repeatedly to descend in weld groove, makes weld groove and first on first
Welding bead metal formation layer in lower weld groove changes shape, and outer layer welding bead metal surface area is greater than internal layer welding bead metal surface area.
3. steel multi-pass as claimed in claim 2 is tempered overlaying method, it is characterised in that: the first thick steel plate of the thick steel plate
40mm is all larger than or is equal to the plate thickness of the second thick steel plate.
4. steel multi-pass as claimed in claim 2 is tempered overlaying method, it is characterised in that: first of first thick steel plate
The width in portion and the second root of the second thick steel plate, is all fixed on 2mm.
5. steel multi-pass as described in claim 1 is tempered overlaying method, it is characterised in that: the thick steel plate is provided with third thickness
Steel plate, the 4th thick steel plate, and third thick steel plate and the 4th thick steel plate are that horizontal adjoins setting, third thick steel plate one end is equipped with one
Basal plane lies in above the 4th thick steel plate one end and is formed with one the 5th scarf, is formed with one the 6th scarf below the same end, and
A third root is formed between the 5th scarf and the 6th scarf, and basal plane and third root are base when mutually offseting
Face and the 5th scarf are formed as weld groove on second, and basal plane and the 6th scarf are formed as the second lower weld groove, when thick steel plate carries out
When multi-pass is tempered built-up welding, built-up welding system carries out according to the following steps:
(A) metal is melted into weld groove in filling chock material filling second and forms welding bead metal；
(B) third root is removed, the welding bead metal of weld groove on second is made to be exposed to the second lower weld groove；
(C) metal is melted into the lower weld groove of filling chock material filling second and forms welding bead metal；
(D) metal is sequentially melted weld groove and second in filling chock material filling second repeatedly to descend in weld groove, makes weld groove and second on second
Welding bead metal formation layer in lower weld groove changes shape, and outer layer welding bead metal surface area is greater than internal layer welding bead metal surface.
6. steel multi-pass as claimed in claim 5 is tempered overlaying method, it is characterised in that: the third thick steel plate of the thick steel plate
40mm is all larger than or is equal to the plate thickness of the 4th thick steel plate.
7. steel multi-pass as claimed in claim 5 is tempered overlaying method, it is characterised in that: the third root of the 4th thick steel plate
Width, be fixed on 2mm.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4292496A (en) * | 1980-01-17 | 1981-09-29 | Aluminum Company Of America | Vertical plate welding using double bevel joint |
| CN103394796A (en) * | 2013-06-27 | 2013-11-20 | 中广核工程有限公司 | Narrow gap groove of steel containment vessel of nuclear power station and automatic welding method thereof |
| CN105081527A (en) * | 2015-06-11 | 2015-11-25 | 上海船舶工艺研究所 | Vertical butt joint automatic welding technological method for medium-thin 5% Ni steel plates |
| CN105127562A (en) * | 2015-09-30 | 2015-12-09 | 青岛兰石重型机械设备有限公司 | Method for welding dissimilar material welded joint of composite plate |
| CN105345233A (en) * | 2015-11-30 | 2016-02-24 | 天津威尔朗科技有限公司 | Gas metal arc welding process of medium-manganese wear-resistant steel and Q345B low-alloy steel |
| CN107803630A (en) * | 2017-10-30 | 2018-03-16 | 上海振华重工启东海洋工程股份有限公司 | A kind of cutter suction dredger trunnion base steel-casting welding procedure |
-
2018
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4292496A (en) * | 1980-01-17 | 1981-09-29 | Aluminum Company Of America | Vertical plate welding using double bevel joint |
| CN103394796A (en) * | 2013-06-27 | 2013-11-20 | 中广核工程有限公司 | Narrow gap groove of steel containment vessel of nuclear power station and automatic welding method thereof |
| CN105081527A (en) * | 2015-06-11 | 2015-11-25 | 上海船舶工艺研究所 | Vertical butt joint automatic welding technological method for medium-thin 5% Ni steel plates |
| CN105127562A (en) * | 2015-09-30 | 2015-12-09 | 青岛兰石重型机械设备有限公司 | Method for welding dissimilar material welded joint of composite plate |
| CN105345233A (en) * | 2015-11-30 | 2016-02-24 | 天津威尔朗科技有限公司 | Gas metal arc welding process of medium-manganese wear-resistant steel and Q345B low-alloy steel |
| CN107803630A (en) * | 2017-10-30 | 2018-03-16 | 上海振华重工启东海洋工程股份有限公司 | A kind of cutter suction dredger trunnion base steel-casting welding procedure |
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