CN107322189A - A kind of sintered flux for high heat-input submerged-arc welding - Google Patents
A kind of sintered flux for high heat-input submerged-arc welding Download PDFInfo
- Publication number
- CN107322189A CN107322189A CN201710576986.0A CN201710576986A CN107322189A CN 107322189 A CN107322189 A CN 107322189A CN 201710576986 A CN201710576986 A CN 201710576986A CN 107322189 A CN107322189 A CN 107322189A
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- CN
- China
- Prior art keywords
- high heat
- sintered flux
- arc welding
- welding
- input
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- 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
-
- 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
- B23K35/40—Making wire or rods for soldering or welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/18—Submerged-arc welding
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Nonmetallic Welding Materials (AREA)
- Arc Welding In General (AREA)
Abstract
The invention discloses a kind of sintered flux for high heat-input submerged-arc welding, the percentage by weight that its sintered flux component includes each component in mineral dry powder and binding agent, mineral dry powder composition is：Fused magnesite, 30 40%；Fluorite, 15 ~ 25%；Corundum, 20 ~ 30%；Wollastonite, 10 ~ 20%；Ferrotianium, 1 ~ 3%；Rare earth fluoride, 1 ~ 3%；Alloying constituent, 0 ~ 3%；Modulus M=2.8 ~ 3.0 when binding agent uses 20 DEG C, concentration is 40 ~ 42 ° of Be sodium silicate.Also disclose a kind of preparation method of the sintered flux for high heat-input submerged-arc welding, sintered flux of the present invention, carry out high heat-input submerged arc welding, welding process is stable, appearance of weld is attractive in appearance, and deposited metal has excellent mechanical performance, particularly low-temperature impact toughness preferable, and the crack-sensitivity rate of welding point is low, it is ensured that the quality of welding point in the case of high heat-input welding.
Description
Technical field
The present invention relates to a kind of sintered flux, more particularly to a kind of sintered flux for high heat-input submerged-arc welding.
Background technology
It is general to improve welding efficiency because the steel plate thickness that structure is used is larger in shipbuilding, mechanical heavy industry industry
Splice joint is carried out all over using mariages or multiplewire submerged arc welding.And mariages or multiplewire submerged arc welding be compared with common welding method, it is welded
Connect heat input very big, reach 80 ~ 200 KJ/cm.Because thermal weld stress is big, welding joint structure is thick, and toughness is poor, and
The crack-sensitivity rate of welding point is higher.At present, the domestic submerged arc welding flux for being welded for high heat-input recognizes less, shortage
In-depth study.
Accordingly, it is desirable to provide a kind of new technical scheme solves the above problems.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of sintered flux for high heat-input submerged-arc welding.Use the weldering
Agent carries out high heat-input submerged arc welding, and deposited metal has excellent mechanical performance, particularly low-temperature impact toughness preferably, and
The crack-sensitivity rate of welding point is low, it is ensured that the quality of welding point.
In order to solve the above technical problems, a kind of sintered flux for high heat-input submerged-arc welding of the present invention, sintering weldering
The component of agent includes mineral dry powder and binding agent,
The percentage by weight of each component is in mineral dry powder composition：
Fused magnesite 30-40%；
Fluorite 15 ~ 25%；
Corundum 20 ~ 30%；
Wollastonite 10 ~ 20%；
Ferrotianium 1 ~ 3%；
Rare earth fluoride 1 ~ 3%；
Alloying constituent 0 ~ 3%；
The weight of binding agent accounts for the 20 ~ 30% of mineral dry powder gross weight.
Modulus M=2.8 ~ 3.0,40 ~ 42 ° of Be of concentration sodium silicate when the binding agent is 20 DEG C.
A kind of preparation method of sintered flux for high heat-input submerged-arc welding, comprises the following steps：
After above-mentioned mineral dry powder is mixed in proportion, modulus M=2.8 ~ 3.0 when adding 20 DEG C, concentration is 40 ~ 42 ° of berylliums
Sodium silicate granulated, bakee 40 ~ 60min, 780 ~ 800 DEG C of 30 ~ 50min of high temperature sintering through 200 ~ 300 DEG C of low temperature, so
After come out of the stove cooling, cross 12 ~ 60 mesh sieves, as finished product sintered flux.
Beneficial effects of the present invention：Sintered flux of the present invention for high heat-input submerged-arc welding, uses the solder flux
High heat-input submerged arc welding is carried out, welding process is stable, and appearance of weld is attractive in appearance, and deposited metal has excellent mechanical performance, special
It is not that low-temperature impact toughness is preferable, and the crack-sensitivity rate of welding point is low, it is ensured that welded in the case of high heat-input welding
The quality of joint.
Embodiment
In order to deepen the understanding of the present invention, below in conjunction with embodiment, the invention will be further described, the embodiment
It is only used for explaining the present invention, does not constitute the restriction to protection scope of the present invention.
A kind of sintered flux for high heat-input submerged-arc welding of the present invention, the component of the sintered flux includes mineral dry powder
And binding agent, the percentage by weight of each component is during mineral dry powder is constituted：
Fused magnesite 30-40%；Fluorite 15 ~ 25%；Corundum 20 ~ 30%；Wollastonite 10 ~ 20%；Ferrotianium 1 ~ 3%；Rare earth fluoride 1
~3%；Alloying constituent 0 ~ 3%；
The weight of binding agent accounts for the 20 ~ 30% of mineral dry powder gross weight.
Table 1 is solder flux dry powder formulation percentage by weight proportioning table of the embodiment 1 to embodiment 3.
The embodiment dry powder formulation percentage by weight of table 1 is matched
A kind of preparation method of sintered flux for high heat-input submerged-arc welding of the present invention is：
It is table 1 by percentage by weight, after the mineral dry powder of 1 ~ embodiment of embodiment 3 is mixed in proportion, when adding 20 DEG C
Modulus M=2.8 ~ 3.0, concentration is 40 ~ 42 °, beryllium Be sodium silicate, and 40 ~ 60min is bakeed through 250 ~ 300 DEG C of low temperature, 780 ~
800 DEG C of 30 ~ 50min of high temperature sintering, cooling of then coming out of the stove crosses 12 ~ 60 mesh sieves, finished product solder flux is made.
The submerged-arc welding sintered flux being made according to above three embodiment, using certain external famous brand name solder flux as comparing
Example, coordinates same welding wire for submerged-arc welding H10Mn2, carries out deposited metal composition analysis, deposited metal Mechanics Performance Testing, with
And the cracking test of welding point.Welding conditions：Thermal weld stress is 100 ~ 150 DEG C of temperature between 80 ~ 150KJ/cm, road.Through
Detection is crossed, the chemical composition of deposited metal is shown in Table 2, and the mechanical property of deposited metal is shown in Table 3.
The chemical composition of the deposited metal of table 2
The mechanical property of the deposited metal of table 3
Example formulations solder flux is can be seen that from above-mentioned data comparison, and comparative example solder flux is significantly lower than in terms of S, P amount is oozed.This
Outside, -40 DEG C of low-temperature impact works of the deposited metal of embodiment solder flux are significantly higher than comparative example solder flux.
The comparison of the cracking test of welding point.Welding is improved by the way of the horizontal gusset of increase and longitudinal gusset to connect
The constraint (restraint) degree of head, cracks welding point.After the submerged-arc welding of 80 ~ 150KJ/cm high heat-inputs experiment, produce
The comparative result of cracking breakout is shown in Table 4.
The comparison of the cracking breakout of table 4
Cracking breakout D=(l/l0) × 100%, l：The total length cracked；l0：Weld seam total length.
By cracking test as can be seen that the welding point crack-sensitivity rate welded using each Example formulations solder flux
Low, its crack resistance is substantially better than comparative example solder flux.
Details are as follows for the effect of each component in sintered flux of the present invention for high heat-input submerged-arc welding：
Fused magnesite：With slag making, adjust slag basicity, viscosity, mobility and improve the effect of appearance of weld.Fused magnesite exists
Molten state can be with the SiO in solder flux2It is compound, reduce its activity, stabilized welding process.Fused magnesite too high levels can increase molten
The fusing point of slag, the influence removability of slag and appearance of weld；Content is too low, then reduces flux basicity so that weld metal degree of purity is reduced.
Fluorite：The salt of meta-alkalescence, fusing point is relatively low, can reduce slag surface tension force and improve slag fluidity；It is in height
Temperature is lower relatively more active, and the partial pressure of hydrogen in electric arc can be reduced by decomposing the fluorine gas produced, so as to effectively reduce weld metal diffusible hydrogen
Content.When content is too low, it can make flux basicity not enough and dehydrogenation effect is not good；During too high levels, electric arc can be caused unstable and weldering
Stitch ripple thick.
Corundum：Adjust the active ingredient of slag fusing point and viscosity, can make slag that there is good mobility, weld metal with
Mother metal transitions smooth, appearance of weld is attractive in appearance.The effect above is not obvious when content is too low, 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.
Wollastonite：Slag making is mainly used as, forming silicate improves slag fusing point and droplet transfer performance, also with sulphur removal
Effect.When content is relatively low, it is impossible to form enough silicate compounds, the fragility of skull is reduced, droplet transfer particle is larger,
Ripple is thicker；And during too high levels, the siliconising to weld seam can be increased, influence the performance of weld seam.
Ferrotianium：The addition of ferrotianium primarily serves the effect of deoxidation, and when content is relatively low, weld seam deoxidation effect is not good, improves
The oxidisability of slag, the de- slag effect of influence；When content is higher, solder flux cost is added.
Rare earth fluoride：Dehydrogenation, purification weld seam are mainly used as, when content is relatively low, the clean-up effect of weld seam is not obvious, and contains
When measuring too high, clean-up effect is also tended to gently.
Alloying constituent：There is deoxidation and supplement effective burning loss of alloy.
A kind of sintered flux for high heat-input submerged-arc welding of the present invention, high heat-input submerged-arc welding is carried out using the solder flux
Connect, welding process is stable, appearance of weld is attractive in appearance, deposited metal have excellent mechanical performance, particularly low-temperature impact toughness compared with
It is good, and the crack-sensitivity rate of welding point is low, it is ensured that the quality of welding point in the case of high heat-input welding.
Claims (3)
1. a kind of sintered flux for high heat-input submerged-arc welding, it is characterised in that：The component of the sintered flux is dry including mineral
Powder and binding agent,
The percentage by weight of each component is in mineral dry powder composition：
Fused magnesite 30-40%；
Fluorite 15 ~ 25%；
Corundum 20 ~ 30%；
Wollastonite 10 ~ 20%；
Ferrotianium 1 ~ 3%；
Rare earth fluoride 1 ~ 3%；
Alloying constituent 0 ~ 3%；
The weight of binding agent accounts for the 20 ~ 30% of mineral dry powder gross weight.
2. a kind of sintered flux for high heat-input submerged-arc welding according to claim 1, it is characterised in that：The bonding
Modulus M=2.8 ~ 3.0,40 ~ 42 ° of Be of concentration sodium silicate when agent is 20 DEG C.
3. a kind of preparation method of sintered flux for high heat-input submerged-arc welding according to claim 1, its feature exists
In comprising the following steps：
After above-mentioned mineral dry powder is mixed in proportion, add binding agent and granulated, 40 are bakeed through 200 ~ 300 DEG C of low temperature
12 ~ 60 mesh sieves, as finished product sintered flux are crossed in ~ 60min, 780 ~ 800 DEG C of 30 ~ 50min of high temperature sintering, cooling of then coming out of the stove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710576986.0A CN107322189A (en) | 2017-07-14 | 2017-07-14 | A kind of sintered flux for high heat-input submerged-arc welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710576986.0A CN107322189A (en) | 2017-07-14 | 2017-07-14 | A kind of sintered flux for high heat-input submerged-arc welding |
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| CN107322189A true CN107322189A (en) | 2017-11-07 |
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| CN201710576986.0A Pending CN107322189A (en) | 2017-07-14 | 2017-07-14 | A kind of sintered flux for high heat-input submerged-arc welding |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108856992A (en) * | 2018-08-15 | 2018-11-23 | 招商局重工（江苏）有限公司 | A kind of high heat-input double wire hidden arc welding high-efficiency welding method |
| CN109128579A (en) * | 2018-09-13 | 2019-01-04 | 郑州凤凰新材料科技有限公司 | A kind of multipurpose steel alloy submerged arc sintered flux and preparation method thereof |
| CN115319331A (en) * | 2022-09-07 | 2022-11-11 | 四川大西洋焊接材料股份有限公司 | Submerged arc welding flux for vanadium-chromium-molybdenum steel, preparation method, wire agent combination and application |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103464931A (en) * | 2013-08-14 | 2013-12-25 | 中国船舶重工集团公司第七二五研究所 | High-toughness sintered flux for submerged-arc welding, and preparation method thereof |
| CN106624460A (en) * | 2017-01-06 | 2017-05-10 | 招商局重工（江苏）有限公司 | Low-temperature steel saw sintered flux used for ships |
-
2017
- 2017-07-14 CN CN201710576986.0A patent/CN107322189A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103464931A (en) * | 2013-08-14 | 2013-12-25 | 中国船舶重工集团公司第七二五研究所 | High-toughness sintered flux for submerged-arc welding, and preparation method thereof |
| CN106624460A (en) * | 2017-01-06 | 2017-05-10 | 招商局重工（江苏）有限公司 | Low-temperature steel saw sintered flux used for ships |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108856992A (en) * | 2018-08-15 | 2018-11-23 | 招商局重工（江苏）有限公司 | A kind of high heat-input double wire hidden arc welding high-efficiency welding method |
| CN109128579A (en) * | 2018-09-13 | 2019-01-04 | 郑州凤凰新材料科技有限公司 | A kind of multipurpose steel alloy submerged arc sintered flux and preparation method thereof |
| CN115319331A (en) * | 2022-09-07 | 2022-11-11 | 四川大西洋焊接材料股份有限公司 | Submerged arc welding flux for vanadium-chromium-molybdenum steel, preparation method, wire agent combination and application |
| CN115319331B (en) * | 2022-09-07 | 2024-03-26 | 四川大西洋焊接材料股份有限公司 | Submerged arc welding flux for vanadium-chromium-molybdenum-added steel, preparation method, wire agent combination and application |
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Application publication date: 20171107 |