CN108247186A - For the different steel weld method of pearlite heatproof steel and austenitic stainless steel - Google Patents
For the different steel weld method of pearlite heatproof steel and austenitic stainless steel Download PDFInfo
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- CN108247186A CN108247186A CN201711362608.9A CN201711362608A CN108247186A CN 108247186 A CN108247186 A CN 108247186A CN 201711362608 A CN201711362608 A CN 201711362608A CN 108247186 A CN108247186 A CN 108247186A
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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
- B23K28/00—Welding or cutting not covered by any of the preceding groups, e.g. electrolytic welding
- B23K28/02—Combined welding or cutting procedures or apparatus
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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
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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
- B23K9/095—Monitoring or automatic control of welding parameters
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Abstract
The present invention relates to different steel weld technology, specifically a kind of different steel weld method for pearlite heatproof steel and austenitic stainless steel.Its feature is to carry out Ni bases built-up welding-welding for carrying out argon tungsten-arc welding bottoming each middle layer of layering progress from bottom to top and the final pass in V-shaped groove of non-melt pole in the V-shaped groove that the slope surface of pearlite heatproof steel and austenitic stainless steel is formed-in slope surface of the welding ends of the equal pearlite heatproof steel of the plate thickness of the selection and austenitic stainless steel processing slope surface in pearlite heatproof steel successively to be heat-treated welded articles, so as to obtain different steel weld finished goods.By pearlite heatproof steel made from this method and the weldment of austenitic stainless steel, corrosion resistance and good, intensity are high, can effectively obstruct carbon diffusion；And weld defect is less prone to, welder is operated of less demanding；The impact flexibility of weldment can be enhanced, improve the performance of product.
Description
Technical field
It is specifically a kind of for pearlite heatproof steel and austenitic stainless steel the present invention relates to different steel weld technology
Different steel weld method.
Background technology
Pearlite heatproof steel, especially 15CrMoR heat resisting steel are suitable for steels for pressure vessel use, and carbon equivalent is up to 0.58%,
With very big tendency of hardenability, when welding, easily occurs hard crisp martensitic structure in Seam and heat effected zone, generates very imperial palace
Stress causes connector to form infant cracking.If not taking special control measure, it is difficult to the appearance of weld crack is avoided, meanwhile,
Constraint (restraint) degree is larger during repair welding；If weld heat input is excessive, heat affected area crystal grain can significantly be roughened, in welding residual stress
Under the action of, also easily there is reheat crack(ing) in the coarse grain zone of weld heat-affected zone；Postwelding, which is heated, may also generate reheat crack(ing)；It is all bright
It is aobvious to reduce weld metal and the plasticity and toughness of heat affected area.So to take appropriate technique when welding 15CrMoR heat resisting steel
Measure and the suitable welding material of selection, the appearance of above problem when being just avoided that welding.
It is respective excellent that the different steel weld of pearlite heatproof steel and austenitic stainless steel so that weldment has had both the two material
Point, and manufacture cost can be substantially reduced, both materials is made to be used widely in the fields such as pressure vessel and petrochemical industry, but
Due to two kinds of materials microstructures and chemical composition difference, and Physical Properties Difference is larger, and welding can be relatively difficult, even if obtaining
Qualified weldment at room temperature, it is also difficult to meet the long-time service under hot conditions, such as：Dilution problem, carbon diffusion, fusion area
Plasticity decline, intercrystalline corrosion, thermal stress and Under Thermal Fatigue Damage etc..
Chinese invention patent ZL200810046615.2 discloses a kind of medium temperature heavy wall WB36（Pearlite heatproof steel）/
1Cr18Ni9Ti（Austenitic stainless steel）Dissimilar steel welding technology, step include：It is 1. first pre- in WB36 steel side with A307 welding rods
Three layers of buttering is as separation layer, and when welding does not preheat, and postwelding carries out dehydrogenation, in order to reduce the dilution to weld seam, built-up welding
φ 3.2mm welding rods, small current welding, 70 ~ 90A of current range must be used during first layer；2. overlay surface of polishing to 8mm,
Composition meets the WB36/1Cr18Ni9Ti butt joint forms of code requirement；3. being filled with A307 or A137 welding rods, core diameter is
φ 3.2mm or φ 4.0mm；4. cancel post weld heat treatment.In WB36 steel in the technique（That is pearlite heatproof steel）The heap that side uses
Wlding material is A307 welding rods, and corrosion resistance is poor, intensity is relatively low, it is impossible to effectively obstruct carbon diffusion；Built-up welding latter two steel
Docking, and directly filled using A307 or A137 welding rods, easily there is weld defect, welder is operated more demanding；Cancel postwelding
Heat treatment easily leads to weld stress residual, organizes coarse grains, reduces weld properties, particularly impact flexibility, serious shadow
Ring the performance of product.
Invention content
The present invention solves the problems, such as to be to provide a kind of for pearlite heatproof steel and the different steel weld of austenitic stainless steel
Method, by pearlite heatproof steel made from this method and the weldment of austenitic stainless steel, corrosion resistance and good, intensity are high, energy
Effective barrier carbon diffusion；And weld defect is less prone to, welder is operated of less demanding；The impact that weldment can be enhanced is tough
Property improves the performance of product.
To solve the above problems, take following technical scheme.
The present invention for pearlite heatproof steel and austenitic stainless steel different steel weld method the characteristics of be include with
Lower step：
The first step prepares.Plate thickness equal pearlite heatproof steel and austenitic stainless steel are chosen, at 15 ~ 20 DEG C of environment temperature,
Their welding ends is processed by slope surface using machining process.If choose ENiCrFe-3 welding rods and ERNiCr-3 welding wires
It is dry, and in welding before use, keeping the temperature 1 ~ 1.5 hour at ENiCrFe-3 welding rods are placed in 150 ~ 200 DEG C.
Second step, built-up welding.In the slope surface of pearlite heatproof steel, flame heat form is taken to be preheated to 150 ~ 200 to it
℃.ENiCrFe-3 welding rods is selected to take the slope surface of pearlite heatproof steel the built-up welding of arc-welding process.Then, by polishing or
Mach mode is smooth by the slope surface treatment of built-up welding, forms smooth Ni base barrier layers.
Third walks, bottoming welding.The slope surface pair of slope surface and austenitic stainless steel after pearlite heatproof steel built-up welding is polished
It connects and puts so that the slope surface of two kinds of steel forms a V-shaped groove.The tungsten of non-melt pole is carried out to the V-shaped groove with ERNiCr-3 welding wires
Electrode argon arc welding bottoming.
4th step, the welding of intermediate and capping layer.Flame heat form is taken to be preheated to the pearlite heatproof steel side of V-shaped groove
150~200℃.Select ENiCrFe-3 welding rods and using arc-welding process, layering carries out each middle layer from bottom to top in V-shaped groove
With the welding of final pass, interlayer temperature is strictly controlled, makes it below 100 DEG C, prevents Seam and heat effected zone from crystal grain occur tight
It grows up again phenomenon.
5th step, heat treatment.By soldered product, be placed in heat preservation 1.6 in the environment of temperature is 690 ± 20 DEG C~
3.0h。
Wherein, the slope surface that the first step preparation processes the welding ends of pearlite heatproof steel and austenitic stainless steel
Angle is 35 ± 2.5 °.
A diameter of 2.5 ~ the 4.0mm for the ENiCrFe-3 welding rods chosen in the first step preparation.
A diameter of 2.0 ~ the 3.0mm for the ERNiCr-3 welding wires chosen in the first step preparation.
The condition of arc-welding process among the second step built-up welding, the 4th step and in capping layer welding job is electric current
120 ~ 140A, 23 ~ 26V of voltage, 15 ~ 17cm/min of speed of welding, 9.7 ~ 14.5KJ/cm of heat input.
The tungsten electrode a diameter of 2.0 ~ 2.5 that the argon tungsten-arc welding of non-melt pole in the third step bottoming welding job uses
Mm, nozzle diameter be 10 ~ 12mm, protective gas Ar >=99.99%, flow 8-12L/Min.
The condition of the argon tungsten-arc welding of non-melt pole in the third step bottoming welding job is 100 ~ 130A of electric current, electric
Press 12 ~ 14V, 10 ~ 12cm/min of speed of welding, 10 ~ 10.9KJ/cm of heat input.
Said program is taken, is had the following advantages：
Due to the present invention for the different steel weld method of pearlite heatproof steel and austenitic stainless steel using ENiCrFe-3 welderings
Item carries out built-up welding to the slope surface of pearlite heatproof steel, so as to form the higher Ni base barrier layers of corrosion resistance and good, intensity, can have
The barrier carbon diffusion of effect.Again since this method uses ERNiCr-3 welding wires to carry out non-melt pole to the V-shaped groove that two kinds of steel dock
Argon tungsten-arc welding bottoming, the defects of can efficiently reducing weld seam, reduce the operation difficulty of welder.Simultaneously as this method exists
Butt-welding fitting is heat-treated after the completion of welding, can be eliminated weld stress residual, be reduced tissue crystal grain, improve weld seam mechanical property
Energy enhances the impact flexibility of weldment, is effectively improved the performance of product.
Description of the drawings
Fig. 1 is the technological process for pearlite heatproof steel and the different steel weld method of austenitic stainless steel of the present invention
Schematic diagram；
Fig. 2 be different steel weld method using the present invention made from weldment sample stretched, the schematic diagram of crooked experiment；
Fig. 3 is the schematic diagram that weldment sample made from different steel weld method using the present invention carries out impact experiment；
Fig. 4 is the welding point macro morphology figure of the direct-arc weldering for comparison；
Fig. 5 is the welding point macro morphology figure with Ni base overlay claddings of different steel weld method welding using the present invention.
Specific embodiment
The present invention is described in further details below in conjunction with drawings and examples.
Embodiment one
The different steel weld method for pearlite heatproof steel and austenitic stainless steel of the present embodiment includes the following steps：
The first step prepares
The equal pearlite heatproof steel 15CrMoR of plate thickness and austenitic stainless steel 06Cr19Ni10 is chosen, in 15 DEG C of environment temperature
Under, their welding ends is processed by slope surface, such as Fig. 1 using machining process（a）It is shown；
It chooses ENiCrFe-3 welding rods and ERNiCr-3 welding wires is several, and in welding before use, ENiCrFe-3 welding rods are placed in 150
1 hour is kept the temperature at DEG C.
Second step, built-up welding
In the slope surface of pearlite heatproof steel, flame heat form is taken to be preheated to 150 DEG C to it；
ENiCrFe-3 welding rods is selected to take the slope surface of pearlite heatproof steel the built-up welding of arc-welding process, such as Fig. 1（b）It is shown；
Then, it is by polishing or mach mode that the slope surface treatment of built-up welding is smooth, smooth Ni base barrier layers are formed, are such as schemed
1（c）It is shown.
Third walks, bottoming welding
Slope surface after pearlite heatproof steel built-up welding is polished is docked with the slope surface of austenitic stainless steel puts so that the slope of two kinds of steel
Face forms a V-shaped groove, such as Fig. 1（d）It is shown；
The argon tungsten-arc welding bottoming of non-melt pole is carried out to the V-shaped groove with ERNiCr-3 welding wires.
4th step, the welding of intermediate and capping layer
Flame heat form is taken to be preheated to 150 DEG C to the pearlite heatproof steel side of V-shaped groove；
Select ENiCrFe-3 welding rods and using arc-welding process, layering carries out each middle layer and capping from bottom to top in V-shaped groove
The welding of welding bead, such as Fig. 1（e）It is shown, interlayer temperature is strictly controlled, 100 DEG C is made it below, prevents Seam and heat effected zone from occurring
Crystal grain is seriously grown up phenomenon.
5th step, heat treatment
By soldered product, it is placed in the environment of temperature is 690 ± 20 DEG C and keeps the temperature 1.6h.
Embodiment two（Its processing step is identical with the correspondence and embodiment one of Fig. 1）
The different steel weld method for pearlite heatproof steel and austenitic stainless steel of the present embodiment includes the following steps：
The first step prepares
The equal pearlite heatproof steel 15CrMoR of plate thickness and austenitic stainless steel 06Cr19Ni10 is chosen, in 18 DEG C of environment temperature
Under, their welding ends is processed by slope surface using machining process；
It chooses ENiCrFe-3 welding rods and ERNiCr-3 welding wires is several, and in welding before use, ENiCrFe-3 welding rods are placed in 180
1.2 hours are kept the temperature at DEG C.
Second step, built-up welding
In the slope surface of pearlite heatproof steel, flame heat form is taken to be preheated to 180 DEG C to it；
ENiCrFe-3 welding rods is selected to take the slope surface of pearlite heatproof steel the built-up welding of arc-welding process；
Then, it is by polishing or mach mode that the slope surface treatment of built-up welding is smooth, form smooth Ni base barrier layers.
Third walks, bottoming welding
Slope surface after pearlite heatproof steel built-up welding is polished is docked with the slope surface of austenitic stainless steel puts so that the slope of two kinds of steel
Face forms a V-shaped groove；
The argon tungsten-arc welding bottoming of non-melt pole is carried out to the V-shaped groove with ERNiCr-3 welding wires.
4th step, the welding of intermediate and capping layer
Flame heat form is taken to be preheated to 180 DEG C to the pearlite heatproof steel side of V-shaped groove；
Select ENiCrFe-3 welding rods and using arc-welding process, layering carries out each middle layer and capping from bottom to top in V-shaped groove
The welding of welding bead, strictly controls interlayer temperature, makes it below 100 DEG C, prevents Seam and heat effected zone from crystal grain occur and seriously grows up
Phenomenon.
5th step, heat treatment
By soldered product, it is placed in the environment of temperature is 690 ± 20 DEG C and keeps the temperature 2.2h.
Embodiment three（Its processing step is identical with the correspondence and embodiment one of Fig. 1）
The different steel weld method for pearlite heatproof steel and austenitic stainless steel of the present embodiment includes the following steps：
The first step prepares
The equal pearlite heatproof steel 15CrMoR of plate thickness and austenitic stainless steel 06Cr19Ni10 is chosen, in 20 DEG C of environment temperature
Under, their welding ends is processed by slope surface using machining process；
It chooses ENiCrFe-3 welding rods and ERNiCr-3 welding wires is several, and in welding before use, ENiCrFe-3 welding rods are placed in 200
1.5 hours are kept the temperature at DEG C.
Second step, built-up welding
In the slope surface of pearlite heatproof steel, flame heat form is taken to be preheated to 200 DEG C to it；
ENiCrFe-3 welding rods is selected to take the slope surface of pearlite heatproof steel the built-up welding of arc-welding process；
Then, it is by polishing or mach mode that the slope surface treatment of built-up welding is smooth, form smooth Ni base barrier layers.
Third walks, bottoming welding
Slope surface after pearlite heatproof steel built-up welding is polished is docked with the slope surface of austenitic stainless steel puts so that the slope of two kinds of steel
Face forms a V-shaped groove；
The argon tungsten-arc welding bottoming of non-melt pole is carried out to the V-shaped groove with ERNiCr-3 welding wires.
4th step, the welding of intermediate and capping layer
Flame heat form is taken to be preheated to 200 DEG C to the pearlite heatproof steel side of V-shaped groove；
Select ENiCrFe-3 welding rods and using arc-welding process, layering carries out each middle layer and capping from bottom to top in V-shaped groove
The welding of welding bead, strictly controls interlayer temperature, makes it below 100 DEG C, prevents Seam and heat effected zone from crystal grain occur and seriously grows up
Phenomenon.
5th step, heat treatment
By soldered product, it is placed in the environment of temperature is 690 ± 20 DEG C and keeps the temperature 3.0h.
In above three embodiments, first step preparation processes the welding ends of pearlite heatproof steel and austenitic stainless steel
Slope surface angle is 35 ± 2.5 °, and the diameters of the ENiCrFe-3 welding rods of selection is 2.5 ~ 4.0mm, ERNiCr-3 welding wires it is straight
Diameter is 2.0 ~ 3.0mm；
Second step built-up welding, arc-welding process among the 4th step and in capping layer welding job condition be electric current 120 ~
140A, 23 ~ 26V of voltage, 15 ~ 17cm/min of speed of welding, 9.7 ~ 14.5KJ/cm of heat input；
A diameter of 2.0 ~ 2.5 mm of tungsten electrode that the argon tungsten-arc welding of non-melt pole in third step bottoming welding job uses, nozzle
A diameter of 10 ~ 12mm, protective gas Ar >=99.99%, flow 8-12L/Min；The condition of the argon tungsten-arc welding of non-melt pole is
100 ~ 130A of electric current, 12 ~ 14V of voltage, 10 ~ 12cm/min of speed of welding, 10 ~ 10.9KJ/cm of heat input.
The welding condition of second step, third step and the 4th step is as shown in the table.
In order to evaluate weldment connector obtained by pearlite heatproof steel and austenitic stainless steel different steel weld method using the present invention
Comprehensive performance, stretching experiment, crooked experiment and impact experiment are carried out respectively to the weldment connector of above three embodiments below,
Carry out Comprehensive Assessment their mechanical property.
(1) it stretches, crooked experiment
Test method as defined in procedure qualification, machining stretching as shown in Figure 2, bend specimen measure the tension of welding point
Intensity.Tensile sample is intercepted along perpendicular to bead direction, after the sample end of interception is machined, makes the longitudinal axis and weld seam
Axis coincide, and weld seam is located at sample center.
(2) impact experiment
In order to further verify the different steel weld of pearlite heatproof steel 15CrMoR and austenitic stainless steel 06Cr19Ni10 compositions
The obdurability of connector and its anti-notch sensitivity, Resistance of Weld Metal carries out impact experiment at normal temperatures as shown in Figure 3, measures it
Impact absorbing energy evaluates the impact flexibility of welding point.It provides to carry out according to GB/T229-2007, light is answered in sample break bottom
It is sliding, there must not be the broken line parallel with notch axis.
Mechanical property compares：
（1）Test result is as follows for the welding joint mechanical property of direct-arc weldering.
Tensile Test Results：
Impact flexibility experimental result：
The welding point macro morphology figure of above-mentioned experimental sample is as shown in Figure 4.
According to data analysis：It is different with ENiCrFe-3 welding rod packing materials direct-arc welding 15CrMoR/06Cr19Ni10
Connector obtained by kind steel disclosure satisfy that the requirement of intensity, plasticity etc., and the fracture value of tensile strength is up to 616MPa, notch
The notched bar impact strength for being opened in 06Cr19Ni10 stainless steels side is greatly lowered due to the carburetting layer that carbon diffusion is formed.
（2）Test result is as follows for Ni base overlay claddings welding joint mechanical property.
Tensile Test Results：
Impact flexibility experimental result：
| Specimen size | Gap position | Notch type | Test temperature/DEG C | Impact absorbing energy/J |
| 10×10×55 | 15CrMoR sides heat affected area | V | 20 | |
| 10×10×55 | 06Cr19Ni10 sides heat affected area | V | 20 |
The welding point macro morphology figure of the above-mentioned experimental sample through Ni base built-up welding is as shown in Figure 5.
According to data analysis：Existed using connector obtained by applying layer of Ni base transition layer process in the pre- heap in 15CrMoR heat resisting steel side
When meeting tension, the requirement of bending strength, the impact flexibility intensity of 06Cr19Ni10 stainless steels side significantly improves, to fracture
Further look at analysis find its be ductile rupture in dimple shape form not of uniform size, and 15CrMoR/06Cr19Ni10
Direct-arc weldering fracture is concordant, has apparent metallic luster, both sides shear lip is it is obvious that be typical brittle failure mode.
（3）Mechanical property is compared as follows after two methods post weld heat treatment.
The Tensile Test Results of post weld heat treatment sample：
Toughness test result is impacted under post weld heat treatment：
According to data analysis：Direct-arc plumb joint is under the high temperature action of post weld heat treatment, and element occurs largely to move in connector
Especially carbon is moved, is greatly lowered the tensile strength of connector, and 15CrMoR/Ni bases/06Cr19Ni10 connectors are in PWHT
Afterwards refined the tissue crystal grain of 15CrMoR sides heat affected area, impact fracture intensity is up to 178J, substantially improves connector
Mechanical property.
For being reliably connected for pearlite heatproof steel 15CrMoR and the dissimilar steel of austenitic stainless steel 06Cr19Ni10, by right
Using the mechanical property comprehensive analysis of welding point obtained by three kinds of different welding procedures, draw the following conclusions：
(1) 15CrMoR and 06Cr19Ni10 dissimilar steels are directly welded using technology of arc welding, is found inside connector apparent
Harden martensite transition zone for decarburized layer, carburetting layer and fusion area, and the impact flexibility of 06Cr19Ni10 stainless steels side overheated zone is notable
It reduces, seriously affects safe handling of this dissimilar steel in the industry such as pressure vessel；
(2) after the pre- heap of 15CrMoR steel side slope discharge surfaces applies Ni base buffer layer materials, then with 06Cr19Ni10 stainless steels carry out
Electric arc welds, and the mechanical property of connector has all reached Normalization rule requirement, and the tensile strength of weld metal and heat affected area is high
In base material, impact flexibility is also more much higher than direct-arc weldering, and comprehensive mechanical performance is significantly improved；
Macroscopical metallographic test result of (3) three kinds of different welding condition lower contacts shows no significant defect inside connector,
Ni bases transition zone plays the blocking effect to carbon really, and 15CrMoR steel side fusion area is nearby without apparent carbon diffusion
Phenomenon, tissue transition are also more natural；
(4) post weld heat treatment plays certain effect to the institutional framework type and refining grain size that improve connector so that
The tensile strength of 15CrMoR sides heat affected area is improved, but it exacerbates the carbon diffusion diffusion inside direct-arc plumb joint,
Decarburized width significantly broadens, and impact flexibility is remarkably decreased, and illustrates that the performance of post weld heat treatment butt joint is affected；
(5) for 15CrMoR and 06Cr19Ni10 steel arc weldings, optimised welding procedure method is advance using welding electrode arc welding
Layer of Ni base buffer layer material is applied, then with ENiCrFe-3 packing materials to 06Cr19Ni10 in 15CrMoR steel side slope discharge surface heaps
Steel carries out butt welding, and postwelding keeps the temperature 2 hours at 670 DEG C.
Above three embodiments and experiment test are using pearlite heatproof steel 15CrMoR and austenitic stainless steel 06Cr19Ni10
It is illustrated to represent, theoretically the different steel weld method for pearlite heatproof steel and austenitic stainless steel of the invention can
Suitable for all pearlite heatproof steels（Such as 14Cr1MoR, ZG20CrMo, 12Cr1MoV）With all austenitic stainless steels（Such as
S31603, S30408, S32168 etc.）Arbitrary combination of two different steel weld, and weld after weldment mechanical property with
The weldment style that above three embodiments obtain is close.
Claims (7)
1. for the different steel weld method of pearlite heatproof steel and austenitic stainless steel, it is characterised in that include the following steps：
The first step prepares
Plate thickness equal pearlite heatproof steel and austenitic stainless steel are chosen, at 15 ~ 20 DEG C of environment temperature, using mechanical processing
Their welding ends is processed into slope surface by method；
It chooses ENiCrFe-3 welding rods and ERNiCr-3 welding wires is several, and in welding before use, ENiCrFe-3 welding rods are placed in 150
1 ~ 1.5 hour is kept the temperature at ~ 200 DEG C；
Second step, built-up welding
In the slope surface of pearlite heatproof steel, flame heat form is taken to be preheated to 150 ~ 200 DEG C to it；
ENiCrFe-3 welding rods is selected to take the slope surface of pearlite heatproof steel the built-up welding of arc-welding process；
Then, it is by polishing or mach mode that the slope surface treatment of built-up welding is smooth, form smooth Ni base barrier layers；
Third walks, bottoming welding
Slope surface after pearlite heatproof steel built-up welding is polished is docked with the slope surface of austenitic stainless steel puts so that the slope of two kinds of steel
Face forms a V-shaped groove；
The argon tungsten-arc welding bottoming of non-melt pole is carried out to the V-shaped groove with ERNiCr-3 welding wires；
4th step, the welding of intermediate and capping layer
Flame heat form is taken to be preheated to 150 ~ 200 DEG C to the pearlite heatproof steel side of V-shaped groove；
Select ENiCrFe-3 welding rods and using arc-welding process, layering carries out each middle layer and capping from bottom to top in V-shaped groove
The welding of welding bead, strictly controls interlayer temperature, makes it below 100 DEG C, prevents Seam and heat effected zone from crystal grain occur and seriously grows up
Phenomenon；
5th step, heat treatment
By soldered product, it is placed in the environment of temperature is 690 ± 20 DEG C and keeps the temperature 1.6~3.0h.
2. as described in claim 1 for the different steel weld method of pearlite heatproof steel and austenitic stainless steel, feature
It is that the slope surface angle that the welding ends of pearlite heatproof steel and austenitic stainless steel is processed is by the first step preparation
35±2.5°。
3. as described in claim 1 for the different steel weld method of pearlite heatproof steel and austenitic stainless steel, feature
It is a diameter of 2.5 ~ 4.0mm for the ENiCrFe-3 welding rods chosen in the first step preparation.
4. as described in claim 1 for the different steel weld method of pearlite heatproof steel and austenitic stainless steel, feature
It is a diameter of 2.0 ~ 3.0mm for the ERNiCr-3 welding wires chosen in the first step preparation.
5. as described in claim 1 for the different steel weld method of pearlite heatproof steel and austenitic stainless steel, feature
Be the second step built-up welding, the condition of arc-welding process among the 4th step and in capping layer welding job be electric current 120 ~
140A, 23 ~ 26V of voltage, 15 ~ 17cm/min of speed of welding, 9.7 ~ 14.5KJ/cm of heat input.
6. as described in claim 1 for the different steel weld method of pearlite heatproof steel and austenitic stainless steel, feature
It is a diameter of 2.0 ~ 2.5 mm of tungsten electrode that the argon tungsten-arc welding of the non-melt pole in the third step bottoming welding job uses,
Nozzle diameter be 10 ~ 12mm, protective gas Ar >=99.99%, flow 8-12L/Min.
7. as described in claim 1 for the different steel weld method of pearlite heatproof steel and austenitic stainless steel, feature
The condition for being the argon tungsten-arc welding of the non-melt pole in third step bottoming welding job is 100 ~ 130A of electric current, voltage 12
~ 14V, 10 ~ 12cm/min of speed of welding, 10 ~ 10.9KJ/cm of heat input.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711362608.9A CN108247186A (en) | 2017-12-18 | 2017-12-18 | For the different steel weld method of pearlite heatproof steel and austenitic stainless steel |
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| CN201711362608.9A CN108247186A (en) | 2017-12-18 | 2017-12-18 | For the different steel weld method of pearlite heatproof steel and austenitic stainless steel |
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| CN108247186A true CN108247186A (en) | 2018-07-06 |
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| CN201711362608.9A Withdrawn CN108247186A (en) | 2017-12-18 | 2017-12-18 | For the different steel weld method of pearlite heatproof steel and austenitic stainless steel |
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| CN109514046A (en) * | 2018-12-17 | 2019-03-26 | 陕西化建工程有限责任公司 | A kind of Ni-based separation layer equipment mouth of band and heat resisting steel pipeline butt welding process |
| CN110253109A (en) * | 2019-07-12 | 2019-09-20 | 中船桂江造船有限公司 | A kind of welding method of CCSB steel+1Cr18NI9TI dissimilar steel |
| CN110722254A (en) * | 2019-10-24 | 2020-01-24 | 武汉一冶钢结构有限责任公司 | Manufacturing method of austenitic stainless steel weld defect test plate with crack defects |
| CN111069803A (en) * | 2019-12-30 | 2020-04-28 | 太原重工股份有限公司 | Welding method of lifting tool for lifting pressure vessel top cover seal head and application thereof |
| CN111716030A (en) * | 2020-05-27 | 2020-09-29 | 共享铸钢有限公司 | Combined welding method for austenitic stainless steel structural member and low-alloy steel casting |
| CN112620877A (en) * | 2020-11-09 | 2021-04-09 | 天津新港船舶重工有限责任公司 | Welding method of super austenitic duplex stainless steel pipe and marine high-strength plate |
| CN113084309A (en) * | 2021-04-16 | 2021-07-09 | 东方电气(广州)重型机器有限公司 | Welding method for chromium molybdenum steel and heat-resistant stainless steel under high-temperature liquid sodium medium |
| CN113878207A (en) * | 2021-10-25 | 2022-01-04 | 华能甘肃西固热电有限公司 | Welding method of dissimilar steel of 12Cr1MoV and 07Cr19Ni11Ti |
| CN114260574A (en) * | 2021-12-17 | 2022-04-01 | 江苏大学 | Underwater wet welding method suitable for dissimilar steel of low alloy steel/stainless steel |
| CN114985880A (en) * | 2022-06-14 | 2022-09-02 | 沈阳鼓风机集团核电泵业有限公司 | Method for welding austenitic stainless steel part and carbon steel part |
| CN115026380A (en) * | 2022-08-10 | 2022-09-09 | 山西阳煤化工机械（集团）有限公司 | Method for welding closure seam of tube plate and shell pass cylinder |
| CN115041786A (en) * | 2022-06-14 | 2022-09-13 | 中核龙原科技有限公司 | Method for welding WC9 pearlite heat-resistant steel and P36 low alloy steel dissimilar steel pipelines |
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| CN109514046A (en) * | 2018-12-17 | 2019-03-26 | 陕西化建工程有限责任公司 | A kind of Ni-based separation layer equipment mouth of band and heat resisting steel pipeline butt welding process |
| CN110253109A (en) * | 2019-07-12 | 2019-09-20 | 中船桂江造船有限公司 | A kind of welding method of CCSB steel+1Cr18NI9TI dissimilar steel |
| CN110253109B (en) * | 2019-07-12 | 2022-11-15 | 中船桂江造船有限公司 | Welding method for CCSB steel +1Cr18NI9TI dissimilar steel |
| CN110722254A (en) * | 2019-10-24 | 2020-01-24 | 武汉一冶钢结构有限责任公司 | Manufacturing method of austenitic stainless steel weld defect test plate with crack defects |
| CN111069803A (en) * | 2019-12-30 | 2020-04-28 | 太原重工股份有限公司 | Welding method of lifting tool for lifting pressure vessel top cover seal head and application thereof |
| CN111716030B (en) * | 2020-05-27 | 2022-02-22 | 共享铸钢有限公司 | Combined welding method for austenitic stainless steel structural member and low-alloy steel casting |
| CN111716030A (en) * | 2020-05-27 | 2020-09-29 | 共享铸钢有限公司 | Combined welding method for austenitic stainless steel structural member and low-alloy steel casting |
| CN112620877A (en) * | 2020-11-09 | 2021-04-09 | 天津新港船舶重工有限责任公司 | Welding method of super austenitic duplex stainless steel pipe and marine high-strength plate |
| CN113084309A (en) * | 2021-04-16 | 2021-07-09 | 东方电气(广州)重型机器有限公司 | Welding method for chromium molybdenum steel and heat-resistant stainless steel under high-temperature liquid sodium medium |
| CN113878207A (en) * | 2021-10-25 | 2022-01-04 | 华能甘肃西固热电有限公司 | Welding method of dissimilar steel of 12Cr1MoV and 07Cr19Ni11Ti |
| CN114260574A (en) * | 2021-12-17 | 2022-04-01 | 江苏大学 | Underwater wet welding method suitable for dissimilar steel of low alloy steel/stainless steel |
| CN114985880A (en) * | 2022-06-14 | 2022-09-02 | 沈阳鼓风机集团核电泵业有限公司 | Method for welding austenitic stainless steel part and carbon steel part |
| CN115041786A (en) * | 2022-06-14 | 2022-09-13 | 中核龙原科技有限公司 | Method for welding WC9 pearlite heat-resistant steel and P36 low alloy steel dissimilar steel pipelines |
| CN114985880B (en) * | 2022-06-14 | 2024-04-19 | 沈阳鼓风机集团核电泵业有限公司 | Method for welding austenitic stainless steel piece and carbon steel piece |
| CN115041786B (en) * | 2022-06-14 | 2024-06-11 | 中核龙原科技有限公司 | Welding method for WC9 pearlite heat-resistant steel and P36 low alloy steel dissimilar steel pipeline |
| CN115026380A (en) * | 2022-08-10 | 2022-09-09 | 山西阳煤化工机械（集团）有限公司 | Method for welding closure seam of tube plate and shell pass cylinder |
| CN115026380B (en) * | 2022-08-10 | 2022-11-15 | 山西阳煤化工机械（集团）有限公司 | Method for welding closure seam of tube plate and shell pass cylinder |
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