CN104708231B - Nickel-base strip pole electroslag welding sintered flux - Google Patents
Nickel-base strip pole electroslag welding sintered flux Download PDFInfo
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- CN104708231B CN104708231B CN201510117736.1A CN201510117736A CN104708231B CN 104708231 B CN104708231 B CN 104708231B CN 201510117736 A CN201510117736 A CN 201510117736A CN 104708231 B CN104708231 B CN 104708231B
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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
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/36—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest
- B23K35/362—Selection of compositions of fluxes
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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
- B23K25/00—Slag welding, i.e. using a heated layer or mass of powder, slag, or the like in contact with the material to be joined
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Abstract
The present invention relates to nickel-base strip pole electroslag welding sintered flux.Specifically, the invention discloses a kind of nickel-base strip pole electroslag welding sintered flux, it is characterised in that：It is prepared from by dry powder component and water glass of binder；The dry powder component and its weight/mass percentage composition are：CaF245~75%, Al2O315~35%, SiO21~5%, CaO 1~5%, MgO 1~5%, cryolite 1~10%, rare earth fluoride 1~5%, ferrocolumbium powder 1~5%；The water glass of binder potassium sodium ratio is 1:1, modulus is 2.2~3.5, and Baume degrees is 38~50 at room temperature, and consumption accounts for the 15~25% of dry powder weight.Sintered flux of the present invention can coordinate various Ni-based weldings such as EQNiCrMo 3, EQNiCr 3 to use, when it coordinates Ni-based welding strip electrode electroslag surfacing, remain to keep the Electroslag Process and welding technological properties of stabilization under the conditions of 250mm/min fast weldings, overlaying shaping is superior in quality, lap-joint's zero defect, also, the indices of overlay cladding can meet user's use requirement.
Description
Technical field
The invention belongs to field of welding material, more particularly to a kind of nickel-base strip pole electroslag welding sintered flux.Solder flux master
Coordinate Ni-based welding, the inner wall surface built-up welding such as hydrogenation plant, Coal Chemical Industry, nuclear vessel, urea equipment is Ni-based in petrochemical industry
Anticorrosion layer.
Background technology
Abros refer to nickel as base (nickel content >=50%) and contain the alloys such as Cr, Mo, Cu, Al, Ti, Nb unit
Element, has excellent corrosion resistance and is mainly used in the alloy of corrosion-resistant purposes in corrosive environment.It is resistance to due to abros
Corrosion is mainly by its contained chemical composition (alloying element) come what is determined, and the matrix of alloy is again face-centered cubic
Austenitic structure, therefore abros classified the characteristics of be all with its contained main alloy element, is mainly had
Ambrose alloy, nickel chromium triangle, nickel molybdenum, Ni-Cr-Mo and the class of Ni-Cr-Mo copper five.
Abros has unique physics, mechanics and decay resistance.Abros is at 200 DEG C to 1090
The erosion of various corrosive mediums is resistant in the range of DEG C.There is good high temperature and cryogenic mechanics performance simultaneously.Therefore, chemistry,
It is used widely in many fields such as oil, hydrometallurgy, space flight, aviation, ocean development, atomic energy.Solve general stainless steel
With other metals, the insurmountable engineering etching problem of nonmetallic materials.
In recent years, with the continuing of China's economy, high speed development, industrial circle for equipment manufacturing requirement also increasingly
Height, the particularly special installation such as some large chemical equipments, nuclear vessel, use condition are extremely harsh, and common steel are difficult to reach
To its use requirement.So far, most economical effective solution is in the Ni-based overcoat of equipment inner wall built-up welding.
For large-area built-up welding, traditional manual electric arc welding and filament submerged arc bead welding deposition efficiency be low and overlay cladding
It is of poor quality.In the field, use strip surfacing technology mostly both at home and abroad, the technology in deposition rate than manual electric arc welding and
Filament submerged arc has been welded with significant progress.Strip electrode electroslag surfacing technology in strip surfacing is heated using the resistance of conductive slag
Change welding, solder flux and mother metal because it has, dilution rate is low, solder flux loss less, cladding efficiency high, deposited metal be pure and built-up welding
The advantages of layer shaping is attractive in appearance, at home and abroad obtains developing rapidly and universal application.
At present, Ni-based strip electrode electroslag surfacing wlding relies primarily on import, and import wlding has, and production cost is high, delivery cycle
The drawback such as long.The producer that the country can provide Ni-based strip electrode electroslag surfacing wlding is less, and the Research Literature of association area has very much
Limit, the related invention patent of Ni-based strip electrode electroslag surfacing solder flux is not retrieved temporarily.Therefore, the nickel-base strip that the present invention is provided
Electrode electroslag surfacing wlding is significant.
The content of the invention
It is an object of the invention to provide a kind of nickel-base strip pole electroslag welding sintered flux.Fact proved, the present invention is provided
Sintered flux welding technological properties it is excellent, Electroslag Process stabilization, spatter is small, the hot removability of slag can good, welding bead beautiful appearance,
Lap-joint's flatness is good, remains to keep comprehensively excellent in the case of the fast welding that 250mm/min is particularly reached in built-up welding weldering speed
Performance.The indices of overlay cladding meet relevant criterion and technical requirements of users, and solder flux be used in combination by mass production applications
The affirmative at family, completely can be with import substitutes.
First aspect present invention provide a kind of nickel-base strip pole electroslag welding sintered flux, its by various ingredients dry powder and
Water glass of binder is prepared from, it is characterised in that the weight of each component is in the dry powder：CaF245~75 weight
Part, Al2O315~35 weight portions, SiO21~5 weight portion, the weight portions of CaO 1~5, the weight portions of MgO 1~5, cryolite 1~
10 weight portions, the weight portion of rare earth fluoride 1~5, the weight portion of ferrocolumbium powder 1~5；Binding agent is that potassium sodium ratio is 1:1 waterglass,
It is 15~25 with the weight ratio of dry powder：100.
Or, first aspect present invention provides a kind of nickel-base strip pole electroslag welding sintered flux, and it is by various ingredients
Dry powder and water glass of binder are prepared from, it is characterised in that the percentage by weight of each component is in the dry powder：CaF245~
75%th, Al2O315~35%, SiO21~5%, CaO 1~5%, MgO 1~5%, cryolite 1~10%, rare earth fluoride 1
~5%, ferrocolumbium powder 1~5%；Binding agent is that potassium sodium ratio is 1:1 waterglass, its addition account for dry powder proportion 15~
25%.
Nickel-base strip pole electroslag welding sintered flux according to a first aspect of the present invention, wherein the CaF2It is in fluorite form
Add.
Nickel-base strip pole electroslag welding sintered flux according to a first aspect of the present invention, wherein the MgO is with fused magnesite
What form was added.
Nickel-base strip pole electroslag welding sintered flux according to a first aspect of the present invention, wherein the Al2O3, CaO and SiO2Point
It is not to be added with selected from following material forms：Corundum, potter's clay, marble, chalk, wollastonite etc..
Nickel-base strip pole electroslag welding sintered flux according to a first aspect of the present invention, wherein the cryolite is with ice crystal
What stone form was added.
Nickel-base strip pole electroslag welding sintered flux according to a first aspect of the present invention, wherein the rare earth fluoride is a kind of omiting
Reddish white powder.It is reacted by rare earth hydrate or rare earth chloride solution and is obtained with hydrofluoric acid.Typically, it melts
Point 1460 DEG C, 2300 DEG C of boiling point.It is generally insoluble in water, hydrochloric acid, nitric acid, sulfuric acid, perchloric acid can be dissolved in.Can be used for film arc light carbon
Luminescent material and steel additive agent of rod, searchlight carbon-point etc. etc..Rare earth fluoride can be bought from the market, in the present invention,
If not otherwise specified, rare earth fluoride used is bought from the market.
Nickel-base strip pole electroslag welding sintered flux according to a first aspect of the present invention, wherein the ferrocolumbium powder is containing Nb
60~70% iron alloy powder.
Nickel-base strip pole electroslag welding sintered flux according to a first aspect of the present invention, wherein the waterglass is for potassium sodium ratio
1:1 waterglass, its modulus is 2.2~3.5, and Baume degrees is 38~50 at room temperature.The waterglass can be bought from the market,
In the present invention, if not otherwise specified, waterglass used is bought from the market.
Nickel-base strip pole electroslag welding sintered flux according to a first aspect of the present invention, its be first by percentage by weight (or
The ratio of weight portion is changed to as described above) be：CaF245~75%, Al2O315~35%, SiO21~5%, CaO 1~
5%th, MgO 1~5%, cryolite 1~10%, rare earth fluoride 1~5%, ferrocolumbium powder 1~5% dry powder blend it is uniform
Afterwards, add and account for the potassium sodium that dry powder proportion is 15~25% and compare 1:1 waterglass wet mixing granulation, then by 200~350 DEG C of low temperature
30~50min of drying, by 750~850 DEG C of 30~60min of high temperature sintering after screening, then through supercooling, lifting, screening, packaging
And be made.
Nickel-base strip pole electroslag welding sintered flux according to a first aspect of the present invention, its particle size range is 20~80 mesh.
Any embodiment of either side of the invention, can be combined with other embodiments, as long as they are not
Contradiction occurs.Additionally, in any embodiment of either side of the present invention, any technical characteristic goes for other realities
The technical characteristic in scheme is applied, as long as they are not in contradiction.
The invention will be further described below.
All documents recited in the present invention, their full content is incorporated herein by reference, and if these are literary
Offer expressed implication with it is of the invention inconsistent when, be defined by statement of the invention.Additionally, the various terms that use of the present invention and
Phrase has well known to a person skilled in the art general sense, nonetheless, the present invention remain desirable at this to these terms and
Phrase is described in more detail and explains, the term and phrase for referring to if any inconsistent with common art-recognized meanings, with institute's table of the present invention
The implication stated is defined.
With the effect of sintered flux each component, details are as follows for nickel-base strip pole of the present invention electroslag welding:
In general, CaF2Main Function be slag making, conductive and dehydrogenation, while being also the pass that Electroslag Process is smoothed out
Key.With CaF2The increase of adding proportion, the electrical conductivity of slag gradually increases, and when electrical conductivity increases to a certain extent, produces
Resistance heat just can guarantee that the quick foundation of Electroslag Process and the stabilization in electroslag molten bath, so as to ensure whole electroslag welding process
Stabilization.But excessive CaF2Can make that electrical conductivity is too high, viscosity coefficient of dross reduction, influence stability and welding bead the shaping matter of electroslag welding
Amount.
In general, Al2O3Appropriate addition can adjust the physical property of solder flux slag, the electric arc in regulation welding process
With Electroslag Process, and improvement skull and appearance of weld to a certain extent.
In general, CaO, SiO2It is main to play a part of to balance solder flux acid-base value and slag making.CaO can improve welding slag
Basicity, improves the mechanical performance of overlay cladding deposited metal.SiO2Reduce the basicity of slag, but with adjustment slag fluidity, thin
Change molten drop and improve the effect of appearance of weld.
In general, MgO is added mainly as slag former, it can improve the basicity of slag, increase slag gas permeability and
Surface tension, improves the removability of slag of solder flux.
In general, shoddye effect is played in the addition of cryolite, bead welding shaping matter is improved to a certain extent
Amount.
In general, the addition of rare earth fluoride increased the stability of Electroslag Process, welding is reduced to a certain extent
During splashing.Although the effect of cryolite and rare earth fluoride as described above is well known in the art, but it is at this
The technique effect presented in invention is but entirely unexpected.
In the present invention, the addition of ferrocolumbium powder (being also known as ferro-niobium powder in the present invention) has the effective alloy unit of supplement
Element dilution and the effect of scaling loss.
The invention provides a kind of nickel-base strip pole electroslag welding sintered flux.
In the present invention, the characteristics of easy scaling loss high for nickel-bass alloy material alloying element content, to reduce alloying element
Scaling loss, improve alloying element transfer coefficient, it is ensured that the purity of deposited metal, the solder flux invented use fluorine alkaline type slag system
And appropriate ferrocolumbium is added, and, the quality of strict control raw material reduces the objectionable impurities brought in raw material.
In the present invention, it is quick in 250mm/min to reach for the particularity of nickel-base alloy liquid metal flows difference
Remain to keep the Electroslag Process and excellent overlaying shaping quality of stabilization under the conditions of weldering, have adjusted key component in dry powder
CaF2、Al2O3Content, to CaO, SiO2, MgO addition done trickle adjustment, and introduce appropriate cryolite, be fluorinated it is dilute
Soil, designs rational flux composition.
In the present invention, it is the quality of guarantee solder flux, it is 1 that binding agent uses potassium sodium ratio:1 waterglass, its modulus is 2.2
~3.5, Baume degrees is 38~50 at room temperature, and dry powder is granulated by wet mixing, then through 200~350 DEG C of 30~50min of low temperature drying,
By 750~850 DEG C of 30~60min of high temperature sintering after screening, then it is made, flux particle size through cooling down, being lifted, sieve, pack
Control is in the range of 20~80 mesh.
In the present invention, the sintered flux mainly coordinates the Ni-based welding harsh large-scale container internal wall band of condition under arms
Electrode electroslag surfacing is used, and, in welding, Electroslag Process stabilization, spatter is small, and the hot removability of slag can be good for the solder flux of present invention design,
Welding bead beautiful appearance, lap-joint's flatness is good, and the indices of overlay cladding meet relevant criterion and technical requirements of users.And
And, using the solder flux ESW weldering speed up to 250mm/min, improve built-up welding welding efficiency.
In one embodiment of the invention, the nickel-base strip pole electroslag welding sintered flux is welding-solder flux combination,
Weld overlay alloy melting loss of elements amount is small, and increasing C amounts are low, and the impurity element increment such as S, P is small, and the index of weld overlay alloy element meets state
Inside and outside relevant criterion and technical requirements of users.
Sintered flux of the present invention has the advantage that compared with prior art：
1st, the sintered flux that the present invention is provided employs rational slag system, optimizes the addition of each component in slag system, very
The good electrical conductivity, viscosity, surface tension and the mobility that have adjusted slag, it coordinates Nickel-based Welding Strip Surfacing fast in 250mm/min
Remain to keep the Electroslag Process and welding technological properties of stabilization under the conditions of speed weldering, also, overlaying shaping is superior in quality, lap-joint
Zero defect.
2nd, the sintered flux that the present invention is provided is prepared from by selected raw material, and its basicity is moderate, can coordinate EQNiCrMo-
3rd, various Ni-based weldings such as EQNiCr-3 are used, and alloying element scaling loss is few when it coordinates Ni-based welding to weld, impurity element increment
Low, gained surfacing layer metal has excellent decay resistance.
Brief description of the drawings
Fig. 1 is built-up welding test plate (panel) sample position figure, wherein：A is chemical composition sample position, and B is chloride stress cracking corrosion examination
Sample position is tested, C is Huey test sample position, and D is side bend test sample position.
Specific embodiment
The present invention can be conducted further description by the following examples, however, the scope of the present invention is not limited
In following embodiments.One of skill in the art, can be with it is understood that on the premise of without departing substantially from the spirit and scope of the present invention
Various change and modification are carried out to the present invention.The present invention to used in experiment to material and test method carry out generality
And/or specific description.Although for realize many materials that the object of the invention used and operating method be it is known in the art that
But the present invention is still described in detail as far as possible herein.Following examples further illustrate the present invention, rather than limiting this hair
It is bright.
Embodiment 1~10
The component of dry powder in sintered flux according to present invention design, prepares 10 kinds of dry powder and corresponds to 10 kinds of waterglass respectively
Addition, numbering is Z1~Z10.
The weight percentage and waterglass addition of 10 kinds of sintered flux dry powder components are shown in Table 1, solder flux preparation method
It is as follows：
Required sintered flux is carried out into proportioning by formula with dry powder to weigh, it is dry-mixed to be put into dry-mixed device after reinspection gross weight
20min, it is dry-mixed it is uniform after pour into wet-mixing device, adding the waterglass of requirement carries out wet-mixing, passes through wet-milling after wet-mixing is uniform
Conveyer belt feeding granulation disc is granulated, and communicated band feeding low-temp. drying stove, 30 are dried at 250~300 DEG C after the completion of granulation
~50min, then boosted machine lifted and sieved, semi-finished product solder flux in the range of standard particle size after screening is put into high temperature kiln
Sintering, under 750~850 DEG C of high temperature sinter 30~60min, after kiln discharge through cooling, lifting, screening (its particle size range be 20~
80 mesh), packaging and be made solder flux finished product.In these embodiments, CaF2It is to be added in fluorite form, MgO is with fused magnesite
What form was added.Al2O3It is to be added in the form of potter's clay, CaO is added in marmorean form, SiO2It is with wollastonite
Form add.Cryolite is added in ice crystal form.Ferrocolumbium powder used is the ferroalloy containing Nb 65%
Powder.Waterglass used is that potassium sodium ratio is 1:1 waterglass, its modulus is 2.9, and Baume degrees is 43 at room temperature.
Table 1：The weight proportion and waterglass addition (being weight portion) of 10 kinds of sintered flux dry powder components
| Numbering | CaO | MgO | Cryolite | Rare earth fluoride | Ferro-niobium powder | Waterglass | |||
| Z1 | 45 | 35 | 3 | 2 | 3 | 3 | 5 | 4 | 19 |
| Z2 | 53 | 26 | 2 | 5 | 1 | 7 | 1 | 5 | 20 |
| Z3 | 55 | 29 | 3 | 3 | 2 | 4 | 3 | 1 | 15 |
| Z4 | 57 | 26 | 1 | 2 | 2 | 10 | 1 | 1 | 21 |
| Z5 | 60 | 27 | 4 | 2 | 1 | 2 | 2 | 2 | 20 |
| Z6 | 62 | 23 | 5 | 1 | 4 | 2 | 1 | 2 | 20.5 |
| Z7 | 65 | 20 | 3 | 3 | 5 | 1 | 1.5 | 1.5 | 22 |
| Z8 | 68 | 18 | 2 | 4 | 3 | 1 | 2 | 2 | 25 |
| Z9 | 70 | 19 | 1 | 1 | 2 | 3 | 3 | 1 | 22.5 |
| Z10 | 75 | 15 | 3 | 1 | 1 | 2 | 2 | 1 | 21 |
The various solder flux finished products for preparing respectively (by taking typical EQNiCrMo-3 weldings as an example, advise with Ni-based welding by welding
Lattice：60mm * 0.5mm wide are thick；If it has been found that using EQNiCr-3 weldings instead, tested, hereafter test performance result with make
With EQNiCrMo-3 no significant differences) coordinate and carry out overlay welding experiment, built-up welding two-layer altogether, experiment quality of parent material is 16MnR, thickness of slab
40mm.The assay method of various measure projects is the conventional assay method in this area.
Nickel-base strip electrode electroslag surfacing process parameter is shown in Table 2.
Table 2：Nickel-base strip electrode electroslag surfacing process parameter
| Voltage (V) | Electric current (A) | Weldering speed (mm/min) | Stem elongation (mm) | Amount of lap (mm) | Temperature (DEG C) between road |
| 23~25 | 800~1050 | 160~250 | 35~45 | 8~10 | ＜ 150 |
The welding technological properties index of embodiment of the present invention Z1~Z10 totally 10 kinds of solder flux is shown in Table 3.
Table 3：Z1~Z10 totally 10 kinds of welding technological properties indexs of solder flux
Sampling in accordance with the following steps carries out chemical analysis：2.0mm first is shot off from surface, then in the range of 2.0~2.5mm
Sampling；Respectively according to NB/T47014-2011, ASTM A262C methods (HUEY methods) and YB/T5362-2006, side bend test is carried out
The preparation and experiment of sample, Huey test sample and chloride stress cracking corrosion test sample.Fig. 1 is seen in sample position.
Welding and surfacing layer metal chemical composition are shown in Table 4 (five samples of sampling observation Z1, Z3, Z5, Z7, Z10).
Table 4：Welding and surfacing layer metal chemical composition
| C | Si | Mn | S | P | Cr | Ni | Mo | Nb | Fe | Cu | |
| EQNiCrMo-3 weldings | 0.018 | 0.2 | 0.2 | 0.004 | 0.008 | 22.02 | 63.4 | 9.28 | 3.58 | 0.34 | 0.02 |
| Z1 surfacing layer metals | 0.020 | 0.38 | 0.14 | 0.005 | 0.010 | 21.53 | 61.8 | 8.85 | 3.56 | 2.51 | 0.03 |
| Z3 surfacing layer metals | 0.021 | 0.35 | 0.17 | 0.004 | 0.009 | 21.62 | 62.0 | 8.86 | 3.34 | 2.60 | 0.02 |
| Z5 surfacing layer metals | 0.020 | 0.39 | 0.15 | 0.005 | 0.009 | 21.68 | 61.9 | 8.90 | 3.45 | 2.55 | 0.02 |
| Z7 surfacing layer metals | 0.019 | 0.37 | 0.13 | 0.004 | 0.009 | 21.93 | 62.2 | 8.92 | 3.40 | 2.42 | 0.02 |
| Z10 surfacing layer metals | 0.018 | 0.38 | 0.15 | 0.005 | 0.009 | 21.82 | 62.1 | 8.89 | 3.32 | 2.49 | 0.03 |
In addition after measured, each this hair in the surfacing layer metal chemical composition and upper table of five samples of Z2, Z4, Z6, Z8, Z9
The surfacing layer metal chemical composition of bright sample is substantially suitable, without significant difference.
Surfacing layer metal bend test the results are shown in Table 5 (tri- samples of sampling observation Z3, Z5, Z7).
Table 5：Surfacing layer metal side bend test result
Note：690 DEG C of * 8h of heat treatment state
In addition after measured, the surfacing layer metal side bend test result of seven samples of Z1, Z2, Z4, Z6, Z8, Z9, Z10 with it is upper
The surfacing layer metal side bend test result of each sample of the present invention is substantially suitable in table, crackle is not found, without significant difference.
Surfacing layer metal Huey test the results are shown in Table 6 (sampling observation sample Z5).
Table 6：Z5 surfacing layer metal Huey test results
Note：
(1) state：690 DEG C of * 8h of heat treatment.
(2) establishing criteria ASTM A262-2010 C methods, after carrying out experiment 48h × 5 cycle, sem observations are amplified with 10 times,
Do not find that intercrystalline corrosion is inclined to, maximum corrosion rate is the 0.071mm/ months, average corrosion rate is the 0.065mm/ months.
(3) corrosion rate (the mm/ months)=(7290 × W)/A × d × t
Wherein：T=etching times, h
A=surface areas, cm2
W=is weightless, g
D=density, g/cm3
In addition, other 9 samples test methods of result with reference to shown in table 6 prepared by foregoing embodiments of the present invention are surveyed
Fixed, as a result corrosion rate is essentially identical with Z5 results, and corrosion rate average value in 0.058~0.069mm/ month scopes
Interior, display has slowly corrosion rate.With corrosion rate<The 0.075mm/ months be one-level, corrosion rate 0.075~
The 0.10mm/ months are two grades, corrosion rate>It is within 0.10/ month that three-level is criterion.In a complementary testing, with reference to real above
Apply the dispensing and preparation method of Z1~Z10, different be only it is without cryolite and rare earth fluoride or different be only not add
Plus cryolite, or different is only, without rare earth fluoride, to prepare these solder flux finished product samples, they are surveyed according to upper method
Fixed corrosion rate is two grades or three-level.
The resistance to chloride stress corrosion (cracking) test of surfacing layer metal the results are shown in Table 7 (sampling observation sample Z5).
Table 7：The resistance to chloride stress corrosion (cracking) test result of Z5 surfacing layer metals
| Test number | Test section is wide/mm | Test section thickness/mm | Crackle/fracture | ||
| 1 | 2.90 | 1.96 | 5.68 | 243 | Flawless |
| 2 | 2.90 | 2.02 | 5.86 | 243 | Flawless |
| 3 | 2.86 | 2.02 | 5.78 | 243 | Flawless |
Note：
(1) state：690 DEG C of * 8h of heat treatment.
(2) establishing criteria YB/T5362-2006 carries out chloride stress cracking corrosion test, 143 ± 1 DEG C (boiling), 96h × 2
After periodic test, with 10 times of amplification sem observations, crackle is not found.
In addition after measured, the resistance to chloride of surfacing layer metal of nine samples of Z1, Z2, Z3, Z4, Z6, Z7, Z8, Z9, Z10 should
Power corrosion test result is substantially suitable with the resistance to chloride stress corrosion (cracking) test result of the surfacing layer metal of sample of the present invention in upper table,
Crackle is not found, without significant difference.
Claims (6)
1. a kind of nickel-base strip pole electroslag welding for large-scale container internal wall surface band pole submerged arc overlay welding nickle-base corrosion-resisting layer is welded with sintering
Agent, it is prepared from by the dry powder and water glass of binder of various ingredients, it is characterised in that the weight of each component in the dry powder
Part matches：CaF245~75 weight portions, Al2O315~35 weight portions, SiO21~5 weight portion, the weight portions of CaO 1~5,
The weight portions of MgO 1~5, the weight portion of cryolite 1~10, the weight portion of rare earth fluoride 1~5, the weight portion of ferrocolumbium powder 1~5；
Binding agent is that potassium sodium ratio is 1:1 waterglass, it is 15~25 with the weight ratio of dry powder：100, the modulus of the waterglass is 2.2
~3.5, Baume degrees is 38~50 at room temperature；The ferrocolumbium powder is the iron alloy powder containing Nb 60~70%.
2. a kind of nickel-base strip pole electroslag welding for large-scale container internal wall surface band pole submerged arc overlay welding nickle-base corrosion-resisting layer is welded with sintering
Agent, it is prepared from by the dry powder and water glass of binder of various ingredients, it is characterised in that the weight of each component in the dry powder
Percentage is：CaF245~75%, Al2O315~35%, SiO21~5%, CaO 1~5%, MgO 1~5%, cryolite 1
~10%, rare earth fluoride 1~5%, ferrocolumbium powder 1~5%；Binding agent is that potassium sodium ratio is 1:1 waterglass, its addition accounts for dry
The 15~25% of powder proportion；The ferrocolumbium powder is the iron alloy powder containing Nb 60~70%.
3. the nickel-base strip pole electroslag welding sintered flux according to claim 1 or 2, wherein the CaF2It is to be added in fluorite form
's.
4. the nickel-base strip pole electroslag welding sintered flux according to claim 1 or 2, wherein the MgO is in fused magnesite form
Add.
5. the nickel-base strip pole electroslag welding sintered flux according to claim 1 or 2, wherein the Al2O3, CaO and SiO2It is respectively
With what is added selected from following material forms：Corundum, potter's clay, marble, chalk, wollastonite.
6. the nickel-base strip pole electroslag welding sintered flux according to claim 1 or 2, the weight of each component and waterglass wherein in dry powder
Measuring proportioning is：
The CaF of 45 weight portions2, 35 weight portions Al2O3, 3 weight portions SiO2, the CaO of 2 weight portions, the MgO of 3 weight portions, 3 weights
Measure the cryolite, the rare earth fluoride of 5 weight portions, the ferro-niobium powder of 4 weight portions, the waterglass of 19 weight portions of part；
The CaF of 53 weight portions2, 26 weight portions Al2O3, 2 weight portions SiO2, the CaO of 5 weight portions, the MgO of 1 weight portion, 7 weights
Measure the cryolite, the rare earth fluoride of 1 weight portion, the ferro-niobium powder of 5 weight portions, the waterglass of 20 weight portions of part；
The CaF of 55 weight portions2, 29 weight portions Al2O3, 3 weight portions SiO2, the CaO of 3 weight portions, the MgO of 2 weight portions, 4 weights
Measure the cryolite, the rare earth fluoride of 3 weight portions, the ferro-niobium powder of 1 weight portion, the waterglass of 15 weight portions of part；
The CaF of 57 weight portions2, 26 weight portions Al2O3, 1 weight portion SiO2, the CaO of 2 weight portions, the MgO of 2 weight portions, 10 weights
Measure the cryolite, the rare earth fluoride of 1 weight portion, the ferro-niobium powder of 1 weight portion, the waterglass of 21 weight portions of part；
The CaF of 60 weight portions2, 27 weight portions Al2O3, 4 weight portions SiO2, the CaO of 2 weight portions, the MgO of 1 weight portion, 2 weights
Measure the cryolite, the rare earth fluoride of 2 weight portions, the ferro-niobium powder of 2 weight portions, the waterglass of 20 weight portions of part；
The CaF of 62 weight portions2, 23 weight portions Al2O3, 5 weight portions SiO2, the CaO of 1 weight portion, the MgO of 4 weight portions, 2 weights
Measure the cryolite, the rare earth fluoride of 1 weight portion, the ferro-niobium powder of 2 weight portions, the waterglass of 20.5 weight portions of part；
The CaF of 65 weight portions2, 20 weight portions Al2O3, 3 weight portions SiO2, the CaO of 3 weight portions, the MgO of 5 weight portions, 1 weight
Measure the cryolite, the rare earth fluoride of 1.5 weight portions, the ferro-niobium powder of 1.5 weight portions, the waterglass of 22 weight portions of part；
The CaF of 68 weight portions2, 18 weight portions Al2O3, 2 weight portions SiO2, the CaO of 4 weight portions, the MgO of 3 weight portions, 1 weight
Measure the cryolite, the rare earth fluoride of 2 weight portions, the ferro-niobium powder of 2 weight portions, the waterglass of 25 weight portions of part；
The CaF of 70 weight portions2, 19 weight portions Al2O3, 1 weight portion SiO2, the CaO of 1 weight portion, the MgO of 2 weight portions, 3 weights
Measure the cryolite, the rare earth fluoride of 3 weight portions, the ferro-niobium powder of 1 weight portion, the waterglass of 22.5 weight portions of part；Or
The CaF of 75 weight portions2, 15 weight portions Al2O3, 3 weight portions SiO2, the CaO of 1 weight portion, the MgO of 1 weight portion, 2 weights
Measure the cryolite, the rare earth fluoride of 2 weight portions, the ferro-niobium powder of 1 weight portion, the waterglass of 21 weight portions of part.
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| CN105195924A (en) * | 2015-09-25 | 2015-12-30 | 机械科学研究院哈尔滨焊接研究所 | Nickel baseband pole electroslag surfacing sintering flux and preparation method |
| CN106514053A (en) * | 2016-11-04 | 2017-03-22 | 四川大西洋焊接材料股份有限公司 | Sintering flux used for stainless steel high-speed electro-slag strip surfacing and preparation method for same |
| CN108057964B (en) * | 2017-12-12 | 2020-05-26 | 北京金威焊材有限公司 | Sintered flux for submerged arc welding of nickel-based filament |
| CN110238493B (en) * | 2019-06-25 | 2020-12-18 | 钢铁研究总院 | Submerged arc welding wire, submerged arc welding material and application thereof |
| CN111037156A (en) * | 2019-12-24 | 2020-04-21 | 胡隆燕 | Preparation method of regulating particles for sintered flux |
| CN114850724B (en) * | 2022-06-17 | 2023-06-23 | 中国船舶重工集团公司第七二五研究所 | High-alkalinity sintered flux for submerged arc welding of austenitic low-temperature steel and preparation method thereof |
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| JPS58167096A (en) * | 1982-03-26 | 1983-10-03 | Kawasaki Steel Corp | Flux composition for electroslag build-up welding of cylindrical vessel using belt-like electrode |
| JPS5913593A (en) * | 1982-07-15 | 1984-01-24 | Nippon Steel Corp | Flux for electroslag welding |
| JP5086652B2 (en) * | 2007-01-26 | 2012-11-28 | 株式会社神戸製鋼所 | Electroslag overlay welding flux |
| JP4958872B2 (en) * | 2008-10-03 | 2012-06-20 | Ｊｆｅスチール株式会社 | Large heat input electroslag welding method |
| CN102363252B (en) * | 2011-10-09 | 2013-01-23 | 北京金威焊材有限公司 | Low-alkalinity and high-toughness sintered flux |
| CN102581518B (en) * | 2012-03-23 | 2014-10-15 | 北京金威焊材有限公司 | Sintered flux for stainless steel surfacing with band electrode |
| FR2989911B1 (en) * | 2012-04-25 | 2015-01-16 | Air Liquide | ELECTROCONDUCTIVE LAYERED PLATING FLOW CONTAINING AN NI-CR ALLOY |
| CN103464931B (en) * | 2013-08-14 | 2015-11-18 | 中国船舶重工集团公司第七二五研究所 | A kind of high-toughness submerged arc welding sintered flux and preparation method |
| CN103447715B (en) * | 2013-08-14 | 2016-08-10 | 中国船舶重工集团公司第七二五研究所 | A kind of nickel-base alloy sintered flux used for submerged arc welding and preparation method |
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