CN103447715B - A kind of nickel-base alloy sintered flux used for submerged arc welding and preparation method - Google Patents
A kind of nickel-base alloy sintered flux used for submerged arc welding and preparation method Download PDFInfo
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- CN103447715B CN103447715B CN201310353149.3A CN201310353149A CN103447715B CN 103447715 B CN103447715 B CN 103447715B CN 201310353149 A CN201310353149 A CN 201310353149A CN 103447715 B CN103447715 B CN 103447715B
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- nickel
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- base alloy
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- submerged arc
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Abstract
A kind of nickel-base alloy sintered flux used for submerged arc welding, including dry powder composition and binding agent, in its dry powder composition, the percentage by weight of each component is: CaF240～52%, Al2O338～47%, CaCO34～8%, metallic aluminium powder 0.5～3%, cryolite 0.5～3%；Binding agent uses potassium sodium 1:1 waterglass, and consumption accounts for the 20～32% of solder flux dry powder weight.Nickel-base alloy sintered flux used for submerged arc welding coupling ERNiCrMo 3 welding wire that the present invention relates to, welding conditions are steady, the removability of slag can be excellent, and welding bead width is uniform, heap is high moderate and mother metal transitions smooth, and face of weld is without defects such as gas load mould, crystallization strain line, crackle and dry slags.
Description
Technical field
The invention belongs to technical field of welding materials, particularly relate to a kind of nickel-base alloy sintered flux used for submerged arc welding and preparation
Method.
Background technology
Nickel-base alloy, because having the corrosion-resistant and antioxygenic property of excellence, is usually used in use condition harshness, security requirement
High equipment.Along with lasting, the high speed development of China's economy, equipment manufacture has become as mainstay of the national economy industry.Dress
The prominent features of standby development of manufacturing is: stand-alone device parameter is more and more higher, uses condition more and more harsher, to security requirement
More and more higher.These technical characterstics facilitate the continuous expansion of nickel-base alloy application, and the production quantity of nickel-base alloy is not in recent years
Disconnected increase, range of application constantly expands.The demand of Nickel-based Alloy Welding material is also being continuously increased, the energy manufacture field this
Phenomenon is especially prominent.Although the Nickel-based Alloy Welding material of current domestic use is mainly based on import, but the Ni-based conjunction of China
The process of gold solder material production domesticization is also constantly being accelerated, and successively occurs in that " a kind of nickel-base welding rod " (publication number CN 101745759
A), " a kind of nickel-based welding rod for AC welding " (publication number CN 101745758 A), " a kind of NI-CR-MO alloys steel welds with Ni-based
Welding rod " the nickel-base welding rod patent such as (publication number CN 102430876 A), and existing part nickel-base welding rod occupies certain state
The interior market share.But the domestic patent the most not occurred in terms of nickel-base alloy submerged-arc welding sintered flux, that can find is domestic several
The nickel-base alloy submerged arc welding flux sample of wlding manufacturer of family all exists that de-slag is clean, impurity content high, deposited metal mechanical property is low
Etc. such or such problem, current domestic urgent need research and development are a kind of, and welding technological properties is good, oxidisability is low, ooze impurity element
Less, the nickel-base alloy submerged-arc welding sintered flux of deposited metal good mechanical properties.
Summary of the invention
Welding technological properties is good, oxidisability is low, it is few to ooze impurity element to it is an object of the invention to provide one, and it is comprehensive
Can high nickel-base alloy sintered flux used for submerged arc welding and preparation method.
To achieve these goals, the technical solution adopted in the present invention is: the sintering used for submerged arc welding weldering of a kind of nickel-base alloy
Agent, including dry powder composition and binding agent, in its dry powder composition, the percentage by weight of each component is: CaF240～52%, Al2O3
38～47%, CaCO34～8%, metallic aluminium powder 0.5～3%, cryolite 0.5～3%；Binding agent uses potassium sodium 1:1 water
Glass, consumption accounts for the 20～32% of solder flux dry powder weight.
CaF of the present invention2Granularity requirements is not more than 60 mesh, purity requirement ＞ 95%, contained S ＜ 0.03%, P ＜ 0.03%.
Al of the present invention2O3Granularity requirements is not more than 300 mesh, purity requirement ＞ 98%, contained S ＜ 0.035%, P ＜
0.035%。
CaCO of the present invention3Granularity requirements is not more than 60 mesh, purity requirement ＞ 95%, contained S ＜ 0.03%, P ＜
0.03%。
Metallic aluminium powder granularity requirements of the present invention is not more than 80 mesh, purity requirement ＞ 97%, contained S ＜ 0.03%, P ＜
0.04%。
Cryolite granularity requirements of the present invention is not more than 200 mesh, and component requirements is F ＞ 50%, Al ＞ 18%, K ＞
26%。
The preparation method of a kind of nickel-base alloy sintered flux used for submerged arc welding, is first CaF by percentage by weight2 40～52%,
Al2O338～47%, CaCO34～the dry powder of 8%, metallic aluminium powder 0.5～3%, cryolite 0.5～3% mix in proportion
After closing uniformly, add the 20 of dry powder weight～the potassium-sodium water glass of 32% as binding agent pelletize lower through 330～370 DEG C
Temperature dries 40～60min, 800～850 DEG C of high temperature sinterings 30～50min, more cooled, sieve, pack, prepared by solder flux.
In the preparation method of nickel-base alloy of the present invention sintered flux used for submerged arc welding screening flux particle be 12～
60 mesh.
Owing to have employed technique scheme, there is advantages that the nickel-base alloy that the present invention relates to buries
Details are as follows in the effect of each dry powder component of arc-welding sintered flux:
CaF2: the salt of meta-alkalescence, fusing point is relatively low, it is possible to reduces slag surface tension force and improves slag fluidity；It is at height
Temperature is lower the most active, decomposes the fluorine gas produced and can reduce the dividing potential drop of hydrogen in electric arc, thus effectively reduces weld metal diffusible hydrogen
Content.When content is too low, can make flux basicity not and dehydrogenation poor effect；During too high levels, electric arc can be caused unstable and weldering
Seam ripple is thick.
Al2O3: regulation slag fusing point and the effective ingredient of viscosity, slag can be made to have a good mobility, weld metal with
Mother metal transitions smooth, appearance of weld is attractive in appearance.When content is too low, the effect above is inconspicuous, causes slag fluidity to become during too high levels
Difference, weld seam easily produces the defects such as undercut, gas load mould and slag inclusion.
CaCO3: its decomposes discharges CO2, generate CaO.CO2Having the effect of dehydrogenation, CaO has desulfurization, dephosphorization, raising
Flux basicity, improve solder flux fusing point and improve the effect of slag breathability.After solder flux fusing point improves, receive and form projection at arc,
Can avoid receiving the concentration of shrinkage stress at arc, and then be effectively prevented the generation of HOT CRACK FOR WELDING P.During too high levels, solder flux melts
Point is too high, and welding bead is sprawled the best；When content is too low, slag breathability is bad, easily produces gas impression.
Metallic aluminium powder: have the effect of deoxidation and alloying.The Al element penetrated into can help deposited metal forming core, moreover it is possible to makes
Nickel-base alloy has ageing strengthening reaction and improves intensity.
Cryolite: can improve slag fluidity, adjusts the angle of wetting between weld seam and mother metal, potassium ion the most therein
Also has the effect of stabilising arc.During too high levels, ripple is thick, shapes the best；Profit when content is too low, between weld seam and mother metal
Wet angle is excessive, welding bead swell.
The nickel-base alloy submerged-arc welding sintered flux that the present invention relates to, mates ERNiCrMo-3 welding wire, it is adaptable to have heat-resisting resistance to
The welding of the nickel-base alloys such as Inconel, Incoloy that erosion requires, is widely used in petrochemical industry, metallurgy, atomic energy, ocean are opened
Send out, the industrial circle such as Aeronautics and Astronautics.
The nickel-base alloy sintered flux used for submerged arc welding coupling ERNiCrMo-3 welding wire that the present invention relates to, welding conditions are steady,
The removability of slag can be excellent, and welding bead width is uniform, heap is high moderate and mother metal transitions smooth, and face of weld is without gas load mould, crystallization line
The defects such as stricture of vagina, crackle and dry slag.The nickel-base alloy submerged-arc welding sintered flux impurity content that the present invention relates to is low, and its S content is
0.008%, P ＜ 0.010%, hence it is evident that less than the external Ni-based solder flux of certain famous brand name.Under same weld specification, the present invention relates to
Nickel-base alloy submerged-arc welding sintered flux is with the external Ni-based solder flux of certain famous brand name as comparative example, and under same weld specification, coupling is same
Planting ERNiCrMo-3 welding wire, chemical composition and the mechanical property of two kinds of deposited metals of gained are the most suitable.
Detailed description of the invention
Below by way of the description of detailed description of the invention, the present invention will be further described, but this not limit to the present invention
System, those skilled in the art, according to the basic thought of the present invention, can make various modification or modification, without departing from the present invention
Basic thought, the most within the scope of the present invention.
Raw material specification used in the present invention is: CaF2Mainly being added by fluorite, granularity requirements is not more than 60 mesh, pure
Degree requires ＞ 95%, contained S ＜ 0.03%, P ＜ 0.03%；Al2O3Main by α-Al2O3Adding, granularity requirements is not more than 300
Mesh, purity requirement ＞ 98%, contained S ＜ 0.035%, P ＜ 0.035%；CaCO3Mainly being added by marble, granularity requirements is not
More than 60 mesh, purity requirement ＞ 95%, contained S ＜ 0.03%, P ＜ 0.03%；Metallic aluminium powder granularity requirements is not more than 80 mesh, purity
Require ＞ 97%, contained S ＜ 0.03%, P ＜ 0.04%；Cryolite granularity requirements is not more than 200 mesh, and component requirements is F ＞ 50%,
Al ＞ 18%, K ＞ 26%.
Table 1 is the embodiment 1 flux constituent percentage by weight of dry powder proportioning (%) table to embodiment 4, these 4 formula solder flux
Coupling ERNiCrMo-3 welding wire, uses suitable welding conditions, and welding technological properties is good.
Table 1 flux composition dry powder quality proportioning (%)
| Numbering | CaF2 | Al2O3 | CaCO3 | Metallic aluminium powder | Potassium fluoroaluminate |
| Embodiment 1 | 40 | 47 | 7 | 3 | 3 |
| Embodiment 2 | 52 | 38 | 6 | 3 | 1 |
| Embodiment 3 | 46 | 45 | 8 | 0.5 | 0.5 |
| Embodiment 4 | 48 | 44 | 4 | 2.5 | 1.5 |
Embodiment 1
By percentage by weight it is: CaF240%, Al2O347%, CaCO37%, metallic aluminium powder 3%, cryolite 3%
Solder flux dry powder composition put in blender and be fully dry mixed, the potassium sodium 1:1 waterglass adding 20% viscosity about 800MPa S fills
Dividing wet mixing, then wet feed is put into pelletize in comminutor, the flux particle made is sent into 350 DEG C of rotation drying ovens and is carried out 40min
Oven drying at low temperature, is sent to rotate sintering furnace and carries out high temperature sintering after drying, sintering temperature is 800 DEG C, and sintering time is
40min, cools down after coming out of the stove, screens out the flux particle of 20 mesh, and packaging is put in storage after the assay was approved, prepared by solder flux.
Embodiment 2
By percentage by weight it is: CaF252%, Al2O338%, CaCO36%, metallic aluminium powder 3%, cryolite 1%
Solder flux dry powder composition put in blender and be fully dry mixed, the potassium sodium 1:1 waterglass adding 30% viscosity about 800MPa S fills
Dividing wet mixing, then wet feed is put into pelletize in comminutor, the flux particle made is sent into 350 DEG C of rotation drying ovens and is carried out 60min
Oven drying at low temperature, is sent to rotate sintering furnace and carries out high temperature sintering after drying, sintering temperature is 850 DEG C, and sintering time is
30min, cools down after coming out of the stove, screens out the flux particle of 40 mesh, and packaging is put in storage after the assay was approved, prepared by solder flux.
Embodiment 3
By percentage by weight it is: CaF246%, Al2O345%, CaCO38%, metallic aluminium powder 0.5%, cryolite
The solder flux dry powder composition of 0.5% is put in blender and is fully dry mixed, and adds the potassium sodium 1:1 water of 28% viscosity about 800MPa S
The abundant wet mixing of glass, then puts into pelletize in comminutor by wet feed, and the flux particle made is sent into 370 DEG C of rotation drying ovens and carried out
50min oven drying at low temperature, is sent to rotate sintering furnace and carries out high temperature sintering after drying, sintering temperature is 830 DEG C, and sintering time is
40min, cools down after coming out of the stove, screens out the flux particle of 60 mesh, and packaging is put in storage after the assay was approved, prepared by solder flux.
Embodiment 4
By percentage by weight it is: CaF248%, Al2O344%, CaCO34%, metallic aluminium powder 2.5%, cryolite
The solder flux dry powder composition of 1.5% is put in blender and is fully dry mixed, and adds the potassium sodium 1:1 water of 32% viscosity about 800MPa S
The abundant wet mixing of glass, then puts into pelletize in comminutor by wet feed, and the flux particle made is sent into 330 DEG C of rotation drying ovens and carried out
60min oven drying at low temperature, is sent to rotate sintering furnace and carries out high temperature sintering after drying, sintering temperature is 830 DEG C, and sintering time is
50min, cools down after coming out of the stove, screens out the flux particle of 12 mesh, and packaging is put in storage after the assay was approved, prepared by solder flux.
For the ERNiCrMo-3 welding wire of Φ 4.0, table 2 lists the welding conditions that embodiment is used.
Table 2 welding conditions
Under same weld specification, mate ERNiCrMo-3 welding wire of the same race (Φ 4.0), with certain famous brand name external for comparing
Example, the mechanical property correction data of gained deposited metal is listed in shown in table 3.As seen from Table 3, the mechanical property of two kinds of deposited metals
The most suitable.
Table 3 deposited metal mechanical property
Under same weld specification, mate ERNiCrMo-3 welding wire of the same race (Φ 4.0), with above-mentioned certain famous brand name external be
Comparative example, the chemical composition correction data of gained deposited metal is listed in table 4.As seen from Table 4, Example formulations ooze C, ooze Si and
Ooze P amount aspect significantly lower than the Ni-based solder flux of comparative example, and to the reservation of the alloying elements such as Cr, Ni, Mo, Nb apparently higher than being higher than
Ni-based solder flux.
Table 4 welding wire and deposited metal composition
Embodiment and the S of the Ni-based solder flux of above-mentioned comparative example, P content correction data are shown in Table 5, from table 3 it can be seen that embodiment
S content substantially low.
It addition, visible by the practical operation welding bead contrast together of built-up welding on 20mm thick low-alloy steel test plate (panel), the present invention
The welding bead of the nickel-base alloy submerged-arc welding sintered flux related to is sprawled preferably, and without the defect such as dry slag, crackle, it totally shapes and is no less than
External certain famous brand name Ni-based solder flux welding bead.
Claims (2)
1. a preparation method for nickel-base alloy sintered flux used for submerged arc welding, is characterized in that: be CaF by percentage by weight2 40～
52%, Al2O345～47%, CaCO34～8%, metallic aluminium powder 0.5～3%, cryolite 0.5～3% dry powder by than
After example mix homogeneously, add the 20～32% of dry powder weight, weight ratio be the potassium-sodium water glass of 1:1 as binding agent pelletize,
Again through 40～60min, 800～850 DEG C of high temperature sinterings 30～50min of 330～370 DEG C of oven drying at low temperatures more cooled, sieve, wrap
Dress, prepared by solder flux.
2. the preparation method of nickel-base alloy sintered flux used for submerged arc welding as claimed in claim 1, is characterized in that: described screening
Flux particle is 12～60 mesh.
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| CN103447715B true CN103447715B (en) | 2016-08-10 |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104128716B (en) * | 2014-08-01 | 2016-04-20 | 南京航空航天大学 | Containing the sintered flux of nano plastic particle |
| CN104708228B (en) * | 2015-02-12 | 2017-03-15 | 西安理工大学 | A kind of universal self-shield fluxed-cored welding agent and preparation method thereof |
| CN104708231B (en) * | 2015-03-17 | 2017-06-16 | 北京金威焊材有限公司 | Nickel-base strip pole electroslag welding sintered flux |
| CN104722956B (en) * | 2015-03-17 | 2019-04-02 | 北京金威焊材有限公司 | Nickel-base strip sintered flux extremely used for submerged arc welding |
| CN105215577A (en) * | 2015-09-22 | 2016-01-06 | 机械科学研究院哈尔滨焊接研究所 | A kind of supporting sintered flux of Ni-based welding wire for submerged-arc welding and preparation method |
| CN108015453A (en) * | 2017-12-05 | 2018-05-11 | 河南科技大学 | A kind of nickel-base alloy submerged-arc welding sintered flux and preparation method and application |
| 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 |
| CN108581273A (en) * | 2017-12-22 | 2018-09-28 | 洛阳双瑞特种合金材料有限公司 | A kind of ultralow diffusible hydrogen sintered flux and preparation and application for low-temperature steel welding |
| CN110052739B (en) * | 2019-05-15 | 2022-06-28 | 天津市永昌焊丝有限公司 | High-strength high-toughness transverse submerged arc welding flux and preparation method and application thereof |
Family Cites Families (3)
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| JPS5937719B2 (en) * | 1980-09-29 | 1984-09-11 | 株式会社神戸製鋼所 | Sintered flux for submerged arc welding |
| US4940882A (en) * | 1989-04-27 | 1990-07-10 | Inco Alloys International, Inc. | Welding flux and welding electrode |
| CN102350598B (en) * | 2011-09-22 | 2013-11-13 | 中国船舶重工集团公司第七二五研究所 | Chromium-nickel austenitic stainless steel submerged-arc welding sintered flux |
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