CN109128436A - A kind of process of the built-up welding aluminium bronze on steel - Google Patents
A kind of process of the built-up welding aluminium bronze on steel Download PDFInfo
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- CN109128436A CN109128436A CN201811197503.7A CN201811197503A CN109128436A CN 109128436 A CN109128436 A CN 109128436A CN 201811197503 A CN201811197503 A CN 201811197503A CN 109128436 A CN109128436 A CN 109128436A
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- 238000003466 welding Methods 0.000 title claims abstract description 215
- 238000000034 method Methods 0.000 title claims abstract description 29
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 28
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 23
- 239000010959 steel Substances 0.000 title claims abstract description 23
- 238000010438 heat treatment Methods 0.000 claims abstract description 15
- 239000011229 interlayer Substances 0.000 claims abstract description 12
- 238000010792 warming Methods 0.000 claims abstract description 10
- 238000000137 annealing Methods 0.000 claims abstract description 5
- 230000003647 oxidation Effects 0.000 claims abstract description 5
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 5
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 5
- 238000004140 cleaning Methods 0.000 claims abstract description 4
- 230000002093 peripheral effect Effects 0.000 claims description 21
- 239000007789 gas Substances 0.000 claims description 19
- 239000010410 layer Substances 0.000 claims description 12
- 238000005253 cladding Methods 0.000 claims description 11
- 238000002791 soaking Methods 0.000 claims description 11
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 10
- 239000010949 copper Substances 0.000 claims description 10
- 229910052802 copper Inorganic materials 0.000 claims description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 8
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 7
- 239000004411 aluminium Substances 0.000 claims description 5
- 229910052782 aluminium Inorganic materials 0.000 claims description 5
- 239000004615 ingredient Substances 0.000 claims description 5
- 230000001681 protective effect Effects 0.000 claims description 5
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 4
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 4
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 4
- 239000010941 cobalt Substances 0.000 claims description 4
- 229910017052 cobalt Inorganic materials 0.000 claims description 4
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims description 4
- 239000011572 manganese Substances 0.000 claims description 4
- 229910052748 manganese Inorganic materials 0.000 claims description 4
- 229910052759 nickel Inorganic materials 0.000 claims description 4
- 229910052710 silicon Inorganic materials 0.000 claims description 4
- 239000010703 silicon Substances 0.000 claims description 4
- 239000011701 zinc Substances 0.000 claims description 4
- 229910052725 zinc Inorganic materials 0.000 claims description 4
- 229910052786 argon Inorganic materials 0.000 claims description 2
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims 2
- 238000005304 joining Methods 0.000 claims 1
- 238000013461 design Methods 0.000 abstract description 6
- 239000000463 material Substances 0.000 abstract description 2
- 241001076960 Argon Species 0.000 description 3
- 235000013876 argon Nutrition 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 3
- 229910052721 tungsten Inorganic materials 0.000 description 3
- 239000010937 tungsten Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 229910017518 Cu Zn Inorganic materials 0.000 description 1
- 229910000772 CuAl8 Inorganic materials 0.000 description 1
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- NGONBPOYDYSZDR-UHFFFAOYSA-N [Ar].[W] Chemical compound [Ar].[W] NGONBPOYDYSZDR-UHFFFAOYSA-N 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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
- B23K9/00—Arc welding or cutting
- B23K9/23—Arc welding or cutting taking account of the properties of the materials to be welded
- B23K9/232—Arc welding or cutting taking account of the properties of the materials to be welded of different metals
-
- 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
- B23K9/04—Welding for other purposes than joining, e.g. built-up welding
-
- 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
- B23K9/173—Arc welding or cutting making use of shielding gas and of a 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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Arc Welding In General (AREA)
Abstract
A kind of process of the built-up welding aluminium bronze on steel, it the described method comprises the following steps: first with the oxidation film on stainless steel wire wheel cleaning built-up welding workpiece to overlaying surface, whole preheating is carried out to built-up welding workpiece again, preheating temperature is 150 DEG C~200 DEG C, 0.5 hour~1 hour is kept the temperature after preheating, then arc-extinguishing plate is being added to overlaying surface two sides, built-up welding workpiece is continuously welded using welding again, built-up welding interlayer temperature is more than or equal to 150 DEG C, and select reasonable welding material and welding condition, annealing heat-treatment is carried out to built-up welding workpiece after the completion of welding, initial temperature is 100 DEG C~150 DEG C, 2 hours~2.5 hours are kept the temperature after being gradually warming up to 300 DEG C~400 DEG C, 1 hour~1.5 hours are kept the temperature after being warming up to 500 DEG C~560 DEG C, then cold with furnace But it to after 200 DEG C, comes out of the stove and is air-cooled to room temperature.Not only surfacing quality is good by the design, but also built-up welding is high-efficient.
Description
Technical field
It is main suitable the present invention relates to welding technology field more particularly to a kind of process of the built-up welding aluminium bronze on steel
For improving the quality and efficiency of built-up welding aluminium bronze on steel.
Background technique
With product form, the diversification of technical requirements, built-up welding aluminium bronze using more and more extensive, conventional hand on steel
Work TIG overlaying method cannot fully meet production requirement in terms of surfacing quality, built-up welding, be primarily present and ask as follows
Topic: 1, overlay cladding gas hole defect is serious, and since copper is thermally conductive fast, molten bath cooling velocity is fast, and the gas in molten bath can not escape in time,
Showed when overlay cladding being caused to be easy to produce stomata, especially large-area built-up welding it is particularly evident, when machining layers of copper, with continuous
Processing, finished surface can find new stomata, and especially stomata is more between layers；2, copper steel interface is easily layered, copper with
The thermal expansion coefficient difference of steel is larger, and cooling velocity difference is big, and postwelding generates biggish welding stress when cooling, is adding multilayer
Built-up welding, the superposition of welding stress be easy to cause copper steel interface debonding；3, conventional method such as TIG built-up welding low efficiency is only capable of for 8 hours
Built-up welding 4kg~6kg welding wire；4, interlayer is easy to produce slag inclusion, and the lasting heat input of TIG weldering tungsten electrode leads to tungsten electrode scaling loss and tungsten inclusion.
Summary of the invention
The purpose of the present invention is overcome the problems, such as poor surfacing quality existing in the prior art, defect of built-up welding low efficiency and,
There is provided that a kind of surfacing quality is good, process of the high-efficient built-up welding aluminium bronze on steel of built-up welding.
In order to achieve the above object, the technical solution of the invention is as follows: a kind of process of the built-up welding aluminium bronze on steel,
It the described method comprises the following steps:
A, with the oxidation film on stainless steel wire wheel cleaning built-up welding workpiece to overlaying surface；
B, whole preheating is carried out to built-up welding workpiece, preheating temperature is 150 DEG C~200 DEG C, keeps the temperature 0.5 after reaching preheating temperature
Hour~1 hour, built-up welding thickness of workpiece is every on the basis of 25 millimeters to increase by 25 millimeters increase soaking time 1 hour；
C, it is located on built-up welding workpiece and adds arc-extinguishing plate to the position of overlaying surface two sides；
D, built-up welding workpiece is continuously welded using welding, protective gas is 99.99 ﹪ argons
Gas swings welding gun using spiral when welding, and built-up welding interlayer temperature is more than or equal to 150 DEG C；
Welding wire is SCu6100A, and gage of wire is 1.2 millimeters, the ingredient and its mass fraction of welding wire are as follows: zinc≤0.2 ﹪,
Tin≤0.1 ﹪, manganese≤0.5 ﹪, iron≤0.5 ﹪, silicon≤0.2 ﹪, nickel and cobalt≤0.5 ﹪, aluminium 7 ﹪~9 ﹪, lead≤0.02 ﹪,
Other compositions≤0.2 ﹪, surplus are copper；
When overlay cladding is 1 layer, welding current is 230A~250A, and weldingvoltage is 26V~28V, speed of welding 40cm/
Min~50cm/min, shield gas flow rate are 20L/min~25L/min, and wire feed rate is 5.5m/min~6m/min；
When overlay cladding is 2~3 layers, welding current is 240A~280A, and weldingvoltage is 26V~30V, and speed of welding is
40cm/min~50cm/min, shield gas flow rate are 20L/min~25L/min, and wire feed rate is 5.5m/min~6m/min；
E, after the completion of welding, annealing heat-treatment is carried out to built-up welding workpiece, heat treatment is initially 100 DEG C~150 into furnace temperature
DEG C, keep the temperature 2 hours~2.5 hours after being first gradually warming up to 300 DEG C~400 DEG C, then that 1 is kept the temperature after being warming up to 500 DEG C~560 DEG C is small
When~1.5 hours, after then cooling to 200 DEG C with the furnace, cooled to room temperature in air of coming out of the stove, built-up welding thickness is at 3 millimeters
On the basis of it is every increase by 3 millimeters increases soaking time 0.5 hour, built-up welding thickness of workpiece on the basis of 25 millimeters it is every increase by 25 millimeters increase
Add soaking time 1 hour.
In step D, when welding, the temperature of overlaying surface centre of surface and boundary position is measured using contact type thermometric indicator,
When built-up welding interlayer temperature is less than 150 DEG C, entirety is carried out to built-up welding workpiece again and is preheated to 150 DEG C or more, preheating speed is less than
Equal to 50 DEG C/h.
In step A, the built-up welding workpiece is annular workpieces, and annular workpieces include outer circumference surface and inner peripheral surface, excircle
In step-like, which includes First terrace and second step face for end face between the side in face and the side of inner peripheral surface,
The outside of First terrace is connected with outer circumference surface, and the inside of First terrace passes through the outside of vertical walls and second step face
Be connected, the inside in second step face is connected with inner peripheral surface, it is described to overlaying surface be First terrace, second step face,
Vertical walls.
It is located at the position joined on the outside of outer circumference surface and First terrace in step C, on the outer circumference surface and adds blow-out
Plate is located at the position joined on the inside of inner peripheral surface and second step face on the inner peripheral surface and adds arc-extinguishing plate.
In step D, when welding, first built-up welding vertical walls, welding position is horizontal position welding, and welding sequence and direction are along circumference side
To built-up welding, then built-up welding First terrace and second step face, annular workpieces are laid flat, welding position is downhand welding, first step
The welding sequence in face and direction are along in circumferential directions along M, to built-up welding, the welding sequence in second step face and direction are along circle
Circumferential direction is along N to built-up welding.
Compared with prior art, the invention has the benefit that
By to welding material, welding condition, weldering in a kind of process of the built-up welding aluminium bronze on steel of the present invention
The reasonable selection of the technological parameters such as preheating temperature and interlayer temperature, post weld heat treatment temperature, heat treatment time is connect, is significantly reduced cold
The defective workmanships occurrence probability such as crackle, fire check, significantly improves production efficiency.Therefore, surfacing quality of the present invention is good, built-up welding effect
Rate is high.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the annular workpieces in the embodiment of the present invention.
In figure: annular workpieces 1, inner peripheral surface 3, First terrace 4, second step face 5, vertical walls 6, are put out outer circumference surface 2
Arc plate 7.
Specific embodiment
Below in conjunction with Detailed description of the invention and specific embodiment, the present invention is described in further detail.
Referring to Fig. 1, a kind of process of the built-up welding aluminium bronze on steel be the described method comprises the following steps:
A, with the oxidation film on stainless steel wire wheel cleaning built-up welding workpiece to overlaying surface；
B, whole preheating is carried out to built-up welding workpiece, preheating temperature is 150 DEG C~200 DEG C, keeps the temperature 0.5 after reaching preheating temperature
Hour~1 hour, built-up welding thickness of workpiece is every on the basis of 25 millimeters to increase by 25 millimeters increase soaking time 1 hour；
C, it is located on built-up welding workpiece and adds arc-extinguishing plate 7 to the position of overlaying surface two sides；
D, built-up welding workpiece is continuously welded using welding, protective gas is 99.99 ﹪ argons
Gas swings welding gun using spiral when welding, and built-up welding interlayer temperature is more than or equal to 150 DEG C；
Welding wire is SCu6100A, and gage of wire is 1.2 millimeters, the ingredient and its mass fraction of welding wire are as follows: zinc≤0.2 ﹪,
Tin≤0.1 ﹪, manganese≤0.5 ﹪, iron≤0.5 ﹪, silicon≤0.2 ﹪, nickel and cobalt≤0.5 ﹪, aluminium 7 ﹪~9 ﹪, lead≤0.02 ﹪,
Other compositions≤0.2 ﹪, surplus are copper；
When overlay cladding is 1 layer, welding current is 230A~250A, and weldingvoltage is 26V~28V, speed of welding 40cm/
Min~50cm/min, shield gas flow rate are 20L/min~25L/min, and wire feed rate is 5.5m/min~6m/min；
When overlay cladding is 2~3 layers, welding current is 240A~280A, and weldingvoltage is 26V~30V, and speed of welding is
40cm/min~50cm/min, shield gas flow rate are 20L/min~25L/min, and wire feed rate is 5.5m/min~6m/min；
E, after the completion of welding, annealing heat-treatment is carried out to built-up welding workpiece, heat treatment is initially 100 DEG C~150 into furnace temperature
DEG C, keep the temperature 2 hours~2.5 hours after being first gradually warming up to 300 DEG C~400 DEG C, then that 1 is kept the temperature after being warming up to 500 DEG C~560 DEG C is small
When~1.5 hours, after then cooling to 200 DEG C with the furnace, cooled to room temperature in air of coming out of the stove, built-up welding thickness is at 3 millimeters
On the basis of it is every increase by 3 millimeters increases soaking time 0.5 hour, built-up welding thickness of workpiece on the basis of 25 millimeters it is every increase by 25 millimeters increase
Add soaking time 1 hour.
In step D, when welding, the temperature of overlaying surface centre of surface and boundary position is measured using contact type thermometric indicator,
When built-up welding interlayer temperature is less than 150 DEG C, entirety is carried out to built-up welding workpiece again and is preheated to 150 DEG C or more, preheating speed is less than
Equal to 50 DEG C/h.
In step A, the built-up welding workpiece is annular workpieces 1, and annular workpieces 1 include outer circumference surface 2 and inner peripheral surface 3, outside
In step-like, which includes First terrace 4 and second for end face between the side of periphery 2 and the side of inner peripheral surface 3
The outside of step surface 5, First terrace 4 is connected with outer circumference surface 2, and the inside of First terrace 4 passes through vertical walls 6 and second
The outside of step surface 5 is connected, and the inside in second step face 5 is connected with inner peripheral surface 3, it is described to overlaying surface be first step
Face 4, second step face 5, vertical walls 6.
In step C, the position joined on the outside of outer circumference surface 2 and First terrace 4 on the outer circumference surface 2, which is added, puts out
Arc plate 7 is located at the position joined on the inside of inner peripheral surface 3 and second step face 5 on the inner peripheral surface 3 and adds arc-extinguishing plate 7.
In step D, when welding, first built-up welding vertical walls 6, welding position is horizontal position welding, and welding sequence and direction are along circumference
Direction built-up welding, then built-up welding First terrace 4 and second step face 5, annular workpieces 1 are laid flat, and welding position is downhand welding, and first
The welding sequence of step surface 4 and direction are along in circumferential directions along M, to built-up welding, the welding sequence in second step face 5 and direction are
Along in circumferential directions along N to built-up welding.
The principle of the present invention is described as follows:
The design existing hand tungsten argon arc welding (TIG) built-up welding aluminium bronze on steel method there are aiming at the problem that with not
Foot, provide a kind of new method of built-up welding aluminium bronze on steel: MIG welds built-up welding.The design is ground by carrying out process ration experiment
Study carefully the welding condition that MIG out welds built-up welding aluminium bronze；By carrying out process ration experiment, it is green to select matching MIG weldering built-up welding aluminium
The wlding parameter of copper；The welding pre-heating temperature and interlayer temperature, post weld heat treatment temperature of MIG weldering built-up welding aluminium bronze are developed simultaneously
The technological parameters such as degree, heat treatment time.
A kind of process of built-up welding aluminium bronze on steel of the design, select welding method be MIG weld, protective gas at
Divide and be set to 99.99%Ar, a kind of solid welding wire of CuAl8 of built-up welding, the trade mark: SCu6100A, diameter 1.2mm, component of weld wire are as follows
Table 1:
Table 1, welding wire chemical component table (mass fraction %)
| Cu | Zn | Sn | Mn | Fe | Si | Ni+Co | Al | Pb | Other |
| Surplus | ≤0.2 | ≤0.1 | ≤0.5 | ≤0.5 | ≤0.2 | ≤0.5 | 7-9 | ≤0.02 | ≤0.2 |
In a kind of process of the built-up welding aluminium bronze on steel of the design by taking annular simulating piece as an example, when built-up welding, need to be in annular
Simulating piece inner ring, outer ring increase arc-extinguishing plate, as shown in Figure 1.The design requires continuous welding, and when welding pays attention to using spiral pendulum
Dynamic welding gun, it is ensured that each layer heap welds thickness, controls interlayer temperature >=150 DEG C, if the welding break period is longer, such as it cannot be guaranteed that layer
Between temperature, need again whole pre- heated work pieces to 150 DEG C or more, heating speed≤50 DEG C/h；Measuring temperature, it is preferable to use contacts
Formula temperature measurer is determined needing overlaying surface centre of surface and the boundary position to carry out thermometric.By taking annular simulating piece as an example, first
Built-up welding step (vertical walls), welding position are horizontal position welding, and welding sequence and direction are along circumferencial direction built-up welding；Built-up welding other two
Plane (step surface), as shown in Figure 1, need to be laid flat workpiece, welding position is downhand welding, and welding sequence and direction are along circumference side
To built-up welding from inside to outside；Welding parameter is as shown in table 2 below；
Table 2, welding condition
Application example: this process solves the problems such as large-area built-up welding aluminium bronze built-up welding low efficiency, of poor quality, has become
Function is applied on certain model electromagnetic launch system of our company's manufacture, significant.
Embodiment:
A kind of process of the built-up welding aluminium bronze on steel, the described method comprises the following steps:
A, the oxidation film on built-up welding workpiece to overlaying surface is carefully cleared up with stainless steel wire wheel；
Referring to Fig. 1, the built-up welding workpiece is annular workpieces 1, and annular workpieces 1 include outer circumference surface 2 and inner peripheral surface 3, outside
In step-like, which includes First terrace 4 and second for end face between the side of periphery 2 and the side of inner peripheral surface 3
The outside of step surface 5, First terrace 4 is connected with outer circumference surface 2, and the inside of First terrace 4 passes through vertical walls 6 and second
The outside of step surface 5 is connected, and the inside in second step face 5 is connected with inner peripheral surface 3, it is described to overlaying surface be first step
Face 4, second step face 5, vertical walls 6；
B, whole preheating is carried out to built-up welding workpiece, preheating temperature is 150 DEG C~200 DEG C, keeps the temperature 0.5 after reaching preheating temperature
Hour~1 hour, built-up welding thickness of workpiece is every on the basis of 25 millimeters to increase by 25 millimeters increase soaking time 1 hour；
C, it is located on built-up welding workpiece and adds arc-extinguishing plate to the position of overlaying surface two sides；
By taking annular workpieces 1 as an example, referring to Fig. 1, when built-up welding, need to be located at outer circumference surface 2 and first step on outer circumference surface 2
Arc-extinguishing plate 7 is added at the position joined on the outside of face 4, is joined on the inside of inner peripheral surface 3 and second step face 5 on inner peripheral surface 3
Arc-extinguishing plate 7 is added at position；
D, built-up welding workpiece is continuously welded using welding, protective gas is 99.99 ﹪ argons
Gas swings welding gun using spiral when welding, and built-up welding interlayer temperature is more than or equal to 150 DEG C；
Welding wire is SCu6100A, and gage of wire is 1.2 millimeters, the ingredient and its mass fraction of welding wire are as follows: zinc≤0.2 ﹪,
Tin≤0.1 ﹪, manganese≤0.5 ﹪, iron≤0.5 ﹪, silicon≤0.2 ﹪, nickel and cobalt≤0.5 ﹪, aluminium 7 ﹪~9 ﹪, lead≤0.02 ﹪,
Other compositions≤0.2 ﹪, surplus are copper；
When overlay cladding is 1 layer, welding current is 230A~250A, and weldingvoltage is 26V~28V, speed of welding 40cm/
Min~50cm/min, shield gas flow rate are 20L/min~25L/min, and wire feed rate is 5.5m/min~6m/min；
When overlay cladding is 2~3 layers, welding current is 240A~280A, and weldingvoltage is 26V~30V, and speed of welding is
40cm/min~50cm/min, shield gas flow rate are 20L/min~25L/min, and wire feed rate is 5.5m/min~6m/min；
When welding, the temperature of overlaying surface centre of surface and boundary position is measured using contact type thermometric indicator, works as overlay cladding
Between temperature less than 150 DEG C when, again to built-up welding workpiece carry out it is whole be preheated to 150 DEG C or more, preheating speed be less than or equal to 50 DEG C/
Hour；
Referring to Fig. 1, when welding, first built-up welding vertical walls 6, welding position is horizontal position welding, and welding sequence and direction are along circumference
Direction built-up welding, then built-up welding First terrace 4 and second step face 5, annular workpieces 1 are laid flat, and welding position is downhand welding, and first
The welding sequence of step surface 4 and direction are along in circumferential directions along M, to built-up welding, the welding sequence in second step face 5 and direction are
Along in circumferential directions along N to built-up welding；
E, after the completion of welding, annealing heat-treatment is carried out to built-up welding workpiece, heat treatment is initially 100 DEG C~150 into furnace temperature
DEG C, keep the temperature 2 hours~2.5 hours after being first gradually warming up to 300 DEG C~400 DEG C, then that 1 is kept the temperature after being warming up to 500 DEG C~560 DEG C is small
When~1.5 hours, after then cooling to 200 DEG C with the furnace, cooled to room temperature in air of coming out of the stove, built-up welding thickness is at 3 millimeters
On the basis of it is every increase by 3 millimeters increases soaking time 0.5 hour, built-up welding thickness of workpiece on the basis of 25 millimeters it is every increase by 25 millimeters increase
Add soaking time 1 hour.
Claims (5)
1. a kind of process of the built-up welding aluminium bronze on steel, which is characterized in that the described method comprises the following steps:
A, with the oxidation film on stainless steel wire wheel cleaning built-up welding workpiece to overlaying surface；
B, whole preheating is carried out to built-up welding workpiece, preheating temperature is 150 DEG C~200 DEG C, keeps the temperature 0.5 hour after reaching preheating temperature
~1 hour, built-up welding thickness of workpiece is every on the basis of 25 millimeters to increase by 25 millimeters increase soaking time 1 hour；
C, it is located on built-up welding workpiece and adds arc-extinguishing plate (7) to the position of overlaying surface two sides；
D, built-up welding workpiece is continuously welded using welding, protective gas is 99.99 ﹪ argon gas, weldering
Welding gun is swung using spiral when connecing, built-up welding interlayer temperature is more than or equal to 150 DEG C；
Welding wire is SCu6100A, and gage of wire is 1.2 millimeters, the ingredient and its mass fraction of welding wire are as follows: zinc≤0.2 ﹪, tin≤
0.1 ﹪, manganese≤0.5 ﹪, iron≤0.5 ﹪, silicon≤0.2 ﹪, nickel and cobalt≤0.5 ﹪, aluminium 7 ﹪~9 ﹪, lead≤0.02 ﹪, other
Ingredient≤0.2 ﹪, surplus are copper；
When overlay cladding is 1 layer, welding current is 230A~250A, and weldingvoltage is 26V~28V, speed of welding 40cm/min
~50cm/min, shield gas flow rate are 20L/min~25L/min, and wire feed rate is 5.5m/min~6m/min；
When overlay cladding is 2~3 layers, welding current is 240A~280A, and weldingvoltage is 26V~30V, speed of welding 40cm/
Min~50cm/min, shield gas flow rate are 20L/min~25L/min, and wire feed rate is 5.5m/min~6m/min；
E, after the completion of welding, annealing heat-treatment is carried out to built-up welding workpiece, heat treatment is initially 100 DEG C~150 DEG C into furnace temperature, first
2 hours~2.5 hours are kept the temperature after being gradually warming up to 300 DEG C~400 DEG C, then 1 hour is kept the temperature after being warming up to 500 DEG C~560 DEG C~
1.5 hours, after then cooling to 200 DEG C with the furnace, cooled to room temperature in air of coming out of the stove, built-up welding thickness was on 3 millimeters of bases
Above every to increase by 3 millimeters increase soaking time 0.5 hour, built-up welding thickness of workpiece is every on the basis of 25 millimeters to increase by 25 millimeters of increases guarantors
1 hour warm time.
2. a kind of process of built-up welding aluminium bronze on steel according to claim 1, it is characterised in that: in step D, weldering
When connecing, the temperature of overlaying surface centre of surface and boundary position is measured using contact type thermometric indicator, when built-up welding interlayer temperature is less than
At 150 DEG C, entirety is carried out to built-up welding workpiece again and is preheated to 150 DEG C or more, preheating speed is less than or equal to 50 DEG C/h.
3. a kind of process of built-up welding aluminium bronze on steel according to claim 1 or 2, it is characterised in that: step A
In, the built-up welding workpiece is annular workpieces (1), and annular workpieces (1) include outer circumference surface (2) and inner peripheral surface (3), outer circumference surface
(2) in step-like, which includes First terrace (4) and second for end face between the side of side and inner peripheral surface (3)
The outside of step surface (5), First terrace (4) is connected with outer circumference surface (2), and the inside of First terrace (4) passes through vertical
It is connected on the outside of wall (6) and second step face (5), the inside of second step face (5) is connected with inner peripheral surface (3), described
It is First terrace (4), second step face (5), vertical walls (6) to overlaying surface.
4. a kind of process of built-up welding aluminium bronze on steel according to claim 3, it is characterised in that: in step C, institute
The position for being located on outer circumference surface (2) and joining on the outside of outer circumference surface (2) and First terrace (4) is stated to add arc-extinguishing plate (7), it is described
It is located at the position joined on the inside of inner peripheral surface (3) and second step face (5) on inner peripheral surface (3) and adds arc-extinguishing plate (7).
5. a kind of process of built-up welding aluminium bronze on steel according to claim 3, it is characterised in that: in step D, weldering
When connecing, first built-up welding vertical walls (6), welding position is horizontal position welding, and welding sequence and direction are along circumferencial direction built-up welding, then built-up welding
First terrace (4) and second step face (5), annular workpieces (1) are laid flat, welding position is downhand welding, First terrace (4)
Welding sequence and direction are along in circumferential directions along M, to built-up welding, the welding sequence of second step face (5) and direction are along circumference
Direction is along N to built-up welding.
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| CN111496346A (en) * | 2020-04-24 | 2020-08-07 | 哈尔滨电机厂有限责任公司 | double-MAG heat source double-filament submerged arc surfacing method |
| CN113210813A (en) * | 2021-04-22 | 2021-08-06 | 浙江富春江水电设备有限公司 | Welding method of nickel-aluminum-bronze workpiece |
| CN114799416A (en) * | 2022-05-10 | 2022-07-29 | 南京迪威尔高端制造股份有限公司 | Blind hole surfacing method for underwater Christmas tree flat piece |
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| CN113210813A (en) * | 2021-04-22 | 2021-08-06 | 浙江富春江水电设备有限公司 | Welding method of nickel-aluminum-bronze workpiece |
| CN113210813B (en) * | 2021-04-22 | 2022-05-10 | 杭州浙富核电设备有限公司 | Welding method of nickel-aluminum-bronze workpiece |
| CN114799416A (en) * | 2022-05-10 | 2022-07-29 | 南京迪威尔高端制造股份有限公司 | Blind hole surfacing method for underwater Christmas tree flat piece |
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