CN106825985A - Phase stainless steel use welding rod - Google Patents
Phase stainless steel use welding rod Download PDFInfo
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- CN106825985A CN106825985A CN201510891566.2A CN201510891566A CN106825985A CN 106825985 A CN106825985 A CN 106825985A CN 201510891566 A CN201510891566 A CN 201510891566A CN 106825985 A CN106825985 A CN 106825985A
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- core wire
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- stainless steel
- welding rod
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Classifications
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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
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
- B23K35/3033—Ni as the principal constituent
- B23K35/304—Ni as the principal constituent with Cr as the next major constituent
-
- 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
- B23K35/365—Selection of non-metallic compositions of coating materials either alone or conjoint with selection of soldering or welding materials
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Nonmetallic Welding Materials (AREA)
Abstract
The invention discloses the phase stainless steel use welding rod that a kind of processability is excellent, including core wire and surface coating, core wire includes 7-9%Ni, 20-24%Cr, 0.5-2.4%Mo, 0.1-1.0%Nb, 0-2%Cu, 0.5-1%Mn, and remaining is Fe and inevitable impurity；Coating includes：Marble 3-8%, fluorite 4-5%, rutile 21-28%, ferrochrome 3-6%, metal powder 5-20%, and appropriate binding agent etc..The welding rod arc stability, de- slag is easy, Forming Quality is excellent, excellent in low temperature toughness, adapts to all-position welding.
Description
Technical field
It is more particularly to a kind of to be used for two-phase the present invention relates to the welding rod that a kind of processability is excellent
Stainless steel welded special welding rod.
Background technology
Due to the high intensity of ferritic stainless steel and the energy of resisting chlorides stress corrosion can be taken into account
Power, and austenitic stainless steel good corrosion resistance and toughness, two phase stainless steel petrochemical industry,
The fields such as desalinization treatment, chemical tanker are widely applied.
Domestic and international stainless steel welding rod mainly has alkalescence, the acid and class of titanium three.Basic electrode,
As though CN101367161 and CN102019518 can guarantee that the preferable low-temperature impact of weld metal
Toughness, but shaping is poor, and electric arc is unstable, and efficiency is low.Acidic electrode, such as CN101323058
Though welding technological properties be can improve with CN101817123 but stomata, crackle etc. frequently resulted in
Defect, deteriorates welding point welding quality.It is excellent with acidic electrode that titanium welding rod absorbs alkalescence
Gesture, has taken into account toughness, weld quality problems, such as CN102513741, CN104439759
With CN104175018 etc..
Welding bead surface quality is limited by the removability of slag energy of welding rod, be influence welding efficiency it is important because
Element.Market need badly can while enough take into account the welding rod of toughness, weld defect and welding bead surface quality,
On the premise of security performance is ensured, manufacture efficiency is improved.
The content of the invention
In view of the shortcomings of the prior art, it is excellent it is an object of the invention to provide a kind of processability
Double-phase stainless steel electric welding bar, good its welding arc stablility, low spatter, the removability of slag can it is excellent,
Welding bead surface quality is good.
For achieving the above object, present invention employs following technical scheme：
A kind of excellent phase stainless steel use welding rod of processability, including core wire and surface coating,
It is characterized in that described core wire material by weight percentage is consisted of the following composition：
7-9%Ni, 20-24%Cr, 0.5-2.4%Mo, 0.1-1.0%Nb, 0-2%Cu, 0.5-1%Mn,
Remaining is Fe and inevitable impurity；It is characterized in that described medicine by weight percentage
Skin composition is consisted of the following composition：Marble 3-8%, fluorite 4-5%, rutile 21-28%,
Ferrochrome 3-6%, metal powder 5-20%, and appropriate binding agent etc..
As further selection, it is characterised in that described core wire material by weight percentage
Consist of the following composition：7-9%Ni, 20-24%Cr, 0.5-2.4%Mo, 0.1-1.0%Nb,
0-2%Cu, 0-0.2%Si, 0.5-1%Mn, 0-0.02%C, remaining is Fe and inevitable miscellaneous
Matter.
It is characterized in that described compositions of surfacing metal by weight percentage is consisted of the following composition：
Marble 3-8%, fluorite 4-5%, rutile 21-28%, ferrochrome 3-6%, metal powder 5-20%,
And appropriate binding agent etc..In compositions of surfacing metal, the D1 and D2 calculated by following relational expressions should expire
Foot：D1：6-9%；D2=23-27%, wherein D1=CaO+MgO+K2O+Na2O,
D2=Al2O3+TiO2。
As further selection, it is characterised in that described core wire material by weight percentage
Consist of the following composition：7-9%Ni, 20-24%Cr, 0.5-2.4%Mo, 0.1-1.0%Nb,
0-2%Cu, 0-0.2%Si, 0.5-1%Mn, 0-0.02%C, remaining is Fe and inevitable miscellaneous
Matter.
It is characterized in that described compositions of surfacing metal by weight percentage is consisted of the following composition：
Marble 3-8%, fluorite 4-5%, rutile 21-28%, ferrochrome 3-6%, metal powder 5-20%,
Silica or silicate and so that SiO2And Fe2O3In one or more content exist
Between 0.5-3.0%, and appropriate binding agent.In compositions of surfacing metal, by the D1 that following relational expressions are calculated
Should meet with D2：D1：6-9%；D2=23-27%, wherein D1=CaO+MgO+K2O+Na2O,
D2=Al2O3+TiO2。
After above-mentioned coating powder stirring is well mixed, weight gluing for coating 18-25% is added
Knot agent, is then fed into plodder and is coated on core wire, by three-phase-drying for tobacco after drying,
150-180 DEG C one hour, 260-340 DEG C three hours and 170-180 DEG C one hour, you can be obtained
Welding rod.
It is as follows to compositions of surfacing metal specification：
Marble：On the one hand using the CO decomposed under its condition of high temperature2Protection is provided to molten bath,
On the one hand slag making is carried out using its CaO for producing, clean welds metal improves removability of slag energy.
If too high levels, can cause the defects such as stomata occur in weld metal.Content is too low, butt welding
Connect molten bath protection unfavorable so that welding pool over oxidation, can significantly deteriorate mechanical property.Cause
This, its preferred content is 3-8%.
Fluorite：Main component is CaF2, the mobility of liquid welding pool can be improved, entered
And improve forming property；On the other hand, using its stronger desulfurization and dehydrogenation, weldering is improved
Stitch the low-temperature flexibility of metal.The content of marble and silica.Content is too low, in weld seam easily
There is stomata.Too high levels, reduction arc stability, reduction arc starting performance are high, influence technique
Performance.Therefore, its preferred content is 4-5%.
Rutile：It is mainly used in welding pool slag making, improves removability of slag energy.Another aspect transition
To the Ti elements of weld metal, welding arc stablility can also be improved, spatter is reduced,
So as to improve welding technological properties.In view of marble and the content of silica, its preferred content
It is 21-28%.
Ferrochrome：To excessive Cr elements in weld seam, its content is 3-6%.
Metal powder：To transition metals in weld seam, it includes molybdenum (molybdenum-iron) powder and nickel (nickel
Iron) one or more in powder, content is 5-20%.Main Function is to ensure weld seam gold
The ratio of ferrite and austenite is in suitable interval in category, so that it is guaranteed that the mechanical property of weld metal
Energy and decay resistance.
Silica, silicate：The composition and structure of its effect adjustment welding slag.Too high levels,
Molten pool metal viscosity can be reduced, is unfavorable for the demand of all-position welding.Content is too low, can increase
The consistency of molten slag layer, the de- slag difficulty of increase.Therefore, its preferred content is 0.5-3%.
The size and ratio of D1 and D2 in compositions of surfacing metal can rise to the removability of slag of welding pool
Decisive role.
D1=CaO+MgO+K2O+Na2O, these four metal oxides can be considered alkalinous metal
Oxide, on the one hand can increase welding pool viscosity, on the other hand can be by depth deoxidation come net
Change weld metal.During too high levels, because viscosity is excessive, it is unfavorable for that welding bead is molded.Content mistake
When low, it is unfavorable for the low-temperature flexibility of weld metal.Its preferred content is 6-9%.
D2=Al2O3+TiO2, both belong to strong deoxidized metal oxide, are welded improving
While molten pool metal mobility, also welding slag and arc performance are played an important role.Contain
When measuring too high, it is unfavorable for stability contorting welding arc.When content is too low, to the effect of welding slag
Fruit is not obvious.It is therefore preferable that content is 23-27%.
On the one hand D1 and D2 determines the slag blanket structure and physical property of welding slag, that is, take off
Slag performance；On the other hand welding pool viscosity is also balanced, while taking into account the punching of weld metal low temperature
Hit toughness and adapt to all positon processing performance.
Binding agent：Appropriate bonding agent is added for improving the mobility and viscosity of coating, so that sharp
In extrusion performance improvement.
Core wire composition design is described as follows：
Ni：It is most important element in core wire and welding rod.It is special in view of coating material arc physics
Property, and in welding process alloying element transfer coefficient, its preferred content is 7-9%.
Cr：It is the important element in weld metal.In view of coating material physical characters of arc,
And in welding process alloying element transfer coefficient, and Ni contents, its preferred content is
20-24%.
Mo:It is most important intensified element in weld metal, it is considered to coating material arc physics
The transfer coefficient of alloying element in characteristic, and welding process, its preferred content is 0.5-2.4%.
Nb:Brought not to the corrosive nature of weld metal for improving impurity element and segregation
Profit influence.During too high levels, the content and distribution, reduction austenite ratio of N are influenceed.Contain
When measuring too low, DeGrain.Therefore, its preferred content is 0.1-1%.
Cu:For the austenite generation in weld seam stabilizing metal, so that adapting to wider array of weldering
Process conditions are connect, and ensures all technical of weld metal.During too high levels, it is easily caused
Weld metal viscosity is excessive, influences all-position welding processing performance.Therefore, its preferred content is
0-2%.
Si：On the one hand serve as the deoxidant element in weld metal, be on the other hand in order at welding electricity
The need for arc control, slag crust structure optimization.It is therefore preferable that content is 0-0.2%.
Mn：It is mainly used in transition in weld metal, on the one hand the Mn in weld metal fills
On the other hand it is the intensified element in weld metal when the deoxidant element in weld metal.Content
The too high or too low control for being unfavorable for austenite in weld metal, mechanical property is caused to deteriorate.
It is therefore preferable that content is 0.5-1%.
C：Exist as impurity element, its content≤0.02%.
Above-mentioned coating is configured, is wrapped up in and is applied on core wire material, carries out extrusion and drying；Then
By three-phase-drying for tobacco, 150-180 DEG C one hour, 260-340 DEG C three hours and 170-180 DEG C
One hour, that is, it is made welding rod of the present invention.And percentage by weight exists shared by coating in welding rod
Between 25-40%.
Compared with prior art, the technology of the present invention beneficial effect at least that：
1st, there is provided a kind of low cost, appearance of weld is attractive in appearance, the removability of slag can good, weld seam low temperature
Tenacity excellent, the welding rod for adapting to all-position welding.Especially welding bead surface slag blanket is easy to fall off, and
Welding bead external waviness is fine and closely woven, beautiful appearance.
2nd, the welding arc stablility of the inventive technique, arc starting performance are good, it is ensured that efficient welding
With the requirement of high-quality welding.
Specific embodiment
The present invention is described in detail with reference to embodiment.
Embodiment 1
Compositions of surfacing metal (percentage by weight) includes：Marble 5%, fluorite 4.2%, rutile
25%, ferrochrome 5%, metal powder 15%, silica 1%, and appropriate binding agent.In coating,
By the D1=7.2% that following relational expressions are calculated；D2=25.6%, wherein
D1=CaO+MgO+K2O+Na2O, D2=Al2O3+TiO2。
Core wire material (percentage by weight) includes 7%Ni, 21%Cr, 1.5%Mo, 0.5%Nb,
1%Cu, 0.1%Si, 0.8%Mn, 0.01%C, remaining is Fe and inevitable impurity.
Each composition powder is proportionally uniformly mixed, be then fed into being wrapped in extrusion press in
On core wire, by drying, three-phase-drying for tobacco, 150-180 DEG C one hour, 260-340 DEG C three small
When and 170-180 DEG C one hour, that is, be made welding rod of the present invention.
Embodiment 2
Compositions of surfacing metal (percentage by weight) includes：Marble 7%, fluorite 5%, rutile
22%, ferrochrome 4%, metal powder 12%, silica 2%, and appropriate binding agent.In coating,
By the D1=8% that following relational expressions are calculated；D2=26.5%, wherein
D1=CaO+MgO+K2O+Na2O, D2=Al2O3+TiO2。
Core wire material (percentage by weight) includes 9%Ni, 20%Cr, 2%Mo, 0.8%Nb,
0.4%Cu, 0.05%Si, 0.6%Mn, 0.015%C, remaining is Fe and inevitable impurity.
Each composition powder is proportionally uniformly mixed, be then fed into being wrapped in extrusion press in
On core wire, by drying, three-phase-drying for tobacco, 150-180 DEG C one hour, 260-340 DEG C three small
When and 170-180 DEG C one hour, that is, be made welding rod of the present invention.
Embodiment 3
Compositions of surfacing metal (percentage by weight) includes：Marble 6%, fluorite 4.4%, rutile
28%, ferrochrome 6%, metal powder 18%, and appropriate binding agent.In coating, by following relations
The D1=9% that formula is calculated；D2=23%, wherein D1=CaO+MgO+K2O+Na2O,
D2=Al2O3+TiO2。
Core wire material (percentage by weight) includes 8%Ni, 20%Cr, 0.9%Mo, 0.2%Nb,
2%Cu, 0.8%Mn, remaining is Fe and inevitable impurity.
Each composition powder is proportionally uniformly mixed, be then fed into being wrapped in extrusion press in
On core wire, by drying, three-phase-drying for tobacco, 150-180 DEG C one hour, 260-340 DEG C three small
When and 170-180 DEG C one hour, that is, be made welding rod of the present invention.
Comparative example 1
Core wire is same as Example 1.In coating fluorite ratio be 8%, remaining composition with implement
Example 1 is identical.
Comparative example 2
Coating is same as Example 2.In core wire Ni ratios be 12%, remaining composition with implement
Example 2 is identical.
Comparative example 3
Core wire is same as Example 3.Main component is same as Example 3 in coating；But D1=10,
D2=22 is different from embodiment.
Above-mentioned three kinds of embodiments and three kinds of comparative examples are made into welding rod, soldering test is carried out.Mother metal
From two-phase stainless steel plate, contrasted using identical welding procedure.Then to welding procedure
Performance and weld metal mechanical property carry out statistical analysis, and Tables 1 and 2 is as a result seen respectively.
Resistance of Weld Metal has been also carried out corrosion test.Sample is heat-treated first, is heat-treated
Temperature is 650-680 DEG C, and the time is 2 hours；Then sample is put into the solution for preparing,
Temperature is 22.5 DEG C, and standing time is 3 days.Solution chlorination water solution, ratio is 1:6.
Sample is taken out after experiment, corrosion rate is calculated using weight-loss method, and observe surface whether there is spot corrosion,
Result is shown in Table 3 respectively.
From the above results, the present invention is redesigned by core wire and compositions of surfacing metal, is obtained
Welding arc stablility is good, low spatter, easily take off the good welding rod of slag, weld bead shape, and horizontal
Weldering and the capability of welding vertically upwards can be excellent, it is adaptable to all-position welding.
Welding rod of the present invention is not restricted to the described embodiments, it is any meet right of the invention will
Improvement and change in the range of asking is all within protection domain of the presently claimed invention.
The welding procedure test result of table 1.
(O:It is qualified；×:It is unqualified)
The deposited metal mechanical property of table 2.
(remarks：Performed according to GB/T983-1995)
The pitting corrosion of table 3.
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Comparative example 1 | Comparative example 2 | Comparative example 3 | |
| 0.0021 | 0.0023 | 0.0025 | 0.0032 | 0.0024 | 0.0026 | |
| Whether there is spot corrosion | Nothing | Nothing | Nothing | Nothing | Nothing | Have |
Claims (4)
1. a kind of excellent phase stainless steel use welding rod of processability, including core wire and surface coating, it is characterised in that described core wire material by weight percentage is consisted of the following composition：7-9%Ni, 20-24%Cr, 0.5-2.4%Mo, 0.1-1.0%Nb, 0-2%Cu, 0.5-1%Mn, remaining is Fe and inevitable impurity；It is characterized in that described compositions of surfacing metal by weight percentage is consisted of the following composition：Marble 3-8%, fluorite 4-5%, rutile 21-28%, ferrochrome 3-6%, metal powder 5-20%, and appropriate binding agent etc..
2. a kind of excellent phase stainless steel use welding rod of processability, including core wire and surface coating, it is characterised in that described core wire material by weight percentage is consisted of the following composition：7-9%Ni, 20-24%Cr, 0.5-2.4%Mo, 0.1-1.0%Nb, 0-2%Cu, 0-0.2%Si, 0.5-1%Mn, 0-0.02%C, remaining is Fe and inevitable impurity；It is characterized in that described compositions of surfacing metal by weight percentage is consisted of the following composition：Marble 3-8%, fluorite 4-5%, rutile 21-28%, ferrochrome 3-6%, metal powder 5-20%, and appropriate binding agent etc.；In compositions of surfacing metal, the D1 and D2 calculated by following relational expressions should meet：D1：6-9%；D2=23-27%, wherein D1=CaO+MgO+K2O+Na2O, D2=Al2O3+TiO2。
3. a kind of excellent phase stainless steel use welding rod of processability, including core wire and surface coating, it is characterised in that described core wire material by weight percentage is consisted of the following composition：7-9%Ni, 20-24%Cr, 0.5-2.4%Mo, 0.1-1.0%Nb, 0-2%Cu, 0-0.2%Si, 0.5-1%Mn, 0-0.02%C, remaining is Fe and inevitable impurity；It is characterized in that described compositions of surfacing metal by weight percentage is consisted of the following composition：Marble 3-8%, fluorite 4-5%, rutile 21-28%, ferrochrome 3-6%, metal powder 5-20%, silica or silicate, and cause SiO2And Fe2O3In one or more content between 0.5-3.0%, and appropriate binding agent；In compositions of surfacing metal, the D1 and D2 calculated by following relational expressions should meet：D1：6-9%；D2=23-27%, wherein D1=CaO+MgO+K2O+Na2O, D2=Al2O3+TiO2。
4. the production method of the double-phase stainless steel electric welding bar in claims 1 to 3 described in any claim, it is characterised in that used the step of for：By the coating powder stirring it is well mixed after, it is the binding agent of coating 18-25% to add weight, is then fed into plodder and is coated on core wire, by three-phase-drying for tobacco after drying, 150-180 DEG C one hour, 260-340 DEG C three hours and 170-180 DEG C one hour.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510891566.2A CN106825985A (en) | 2015-12-07 | 2015-12-07 | Phase stainless steel use welding rod |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510891566.2A CN106825985A (en) | 2015-12-07 | 2015-12-07 | Phase stainless steel use welding rod |
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| CN106825985A true CN106825985A (en) | 2017-06-13 |
Family
ID=59151722
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| CN201510891566.2A Pending CN106825985A (en) | 2015-12-07 | 2015-12-07 | Phase stainless steel use welding rod |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109967918A (en) * | 2017-12-27 | 2019-07-05 | 株式会社神户制钢所 | The submerged arc welding bonded flux of two phase stainless steel |
| CN110773906A (en) * | 2019-11-22 | 2020-02-11 | 株洲湘江电焊条有限公司 | Stainless steel welding rod and preparation method thereof |
| WO2023000473A1 (en) * | 2021-07-20 | 2023-01-26 | 哈尔滨工业大学（威海） | Full slag covering, spatter-free flux-cored welding wire |
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| CN109967918A (en) * | 2017-12-27 | 2019-07-05 | 株式会社神户制钢所 | The submerged arc welding bonded flux of two phase stainless steel |
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| WO2023000473A1 (en) * | 2021-07-20 | 2023-01-26 | 哈尔滨工业大学（威海） | Full slag covering, spatter-free flux-cored welding wire |
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Application publication date: 20170613 |