CN106624444B - High deposition rate low hydrogen type iron powder electrode and preparation method thereof - Google Patents
High deposition rate low hydrogen type iron powder electrode and preparation method thereof Download PDFInfo
- Publication number
- CN106624444B CN106624444B CN201611108743.6A CN201611108743A CN106624444B CN 106624444 B CN106624444 B CN 106624444B CN 201611108743 A CN201611108743 A CN 201611108743A CN 106624444 B CN106624444 B CN 106624444B
- Authority
- CN
- China
- Prior art keywords
- core wire
- coating
- powder
- iron powder
- parts
- 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.)
- Active
Links
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
- B23K35/24—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
- B23K35/3053—Fe as the principal 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
- B23K35/02—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape
- B23K35/0255—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape for use in welding
- B23K35/0261—Rods, electrodes, wires
- B23K35/0272—Rods, electrodes, wires with more than one layer of coating or sheathing material
-
- 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
- B23K35/3601—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 with inorganic compounds as principal constituents
- B23K35/3602—Carbonates, basic oxides or hydroxides
-
- 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
-
- 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
- B23K35/404—Coated rods; Coated electrodes
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Nonmetallic Welding Materials (AREA)
Abstract
The invention belongs to technical field of welding materials, and in particular to a kind of high deposition rate low hydrogen type iron powder electrode and preparation method thereof.The coating of high deposition rate low hydrogen type iron powder electrode of the present invention is made of following parts by weight ingredient: 29~31 parts of marble；13~15 parts of fluorite；2~4 parts of ferrosilicon；1.5~2.5 parts of titanium dioxide；1.5~2.5 parts of wood powder；14~16 parts of rutile；4~6 parts of feldspar powder；6~8 parts of silica flour；4~6 parts of mica powder；12~14 parts of titanium valve；39~41 parts of iron powder.High deposition rate low hydrogen type iron powder electrode deposition efficiency of the present invention is high, has reached 134%；Hardness number is larger after welding rod welding, reaches 185.8, and numerical fluctuations are smaller, and weld hardness is ideal after welding rod welding.
Description
Technical field
The invention belongs to technical field of welding materials, and in particular to a kind of high deposition rate low hydrogen type iron powder electrode and its preparation
Method.
Background technique
Iron powder electrode is that a certain number of iron powders are added in coating, to improve the welding technological properties of welding rod, improves weldering
The deposition efficiency of item, this kind of electrode coating outer diameter is slightly thicker than common welding rod, can still carry out all-position welding, when iron powder additional amount is super
When crossing 30%, and suitably increasing coating thickness, so that it may greatly improve deposition efficiency, commonly referred to as high efficiency fe powder covered electrode, deposition
Efficiency is 130%~160%, reaches as high as 250%.Iron powder electrode has excellent processing performance, and appearance of weld is smooth, and nothing is stung
Side, dissolved drip are in spurting transition, splashing very little.Compared with same diameter common welding rod, welding rod deposition rate improves 132%, melts
Change coefficient and improve 18%, deposition efficiency improves 125.6%, and every kilogram of deposited metal arcing time reduces 124.8%, and every kilogram molten
The power consumption of metallisation saves 37.8%, and core wire dosage saves 96.9%.
It is clear that high efficiency fe powder covered electrode deposition efficiency is high, a large amount of working hours, manpower, electric power and steel consumption, skill can be saved
Art remarkable in economical benefits, domestic production low-hydrogen electrode at present, there are also to be hoisted for mechanical property and deposition efficiency.
Summary of the invention
Against the above deficiency, the low hydrogen type high technical problem to be solved by the invention is to provide a kind of hardness and deposition rate
Iron powder electrode.
High deposition rate low hydrogen type iron powder electrode of the present invention is made of core wire and the coating two parts being attached on core wire,
Described in coating be made of following parts by weight ingredient:
Further, above-mentioned high deposition rate low hydrogen type iron powder electrode, wherein the coating is made of following parts by weight ingredient:
Above-mentioned high deposition rate low hydrogen type iron powder electrode, wherein CaCO in the marble3Content > 97wt%, P≤
0.037wt%, S≤0.037wt%；
CaF in the fluorite2Content > 90wt%, 120 mesh of granularity；
Silicon in Ferrosilicon content >=the 75wt%；
Panxi Diqu anatase thpe white powder >=91.0wt% is used in the titanium dioxide；
The partial size of the wood powder is 80 mesh；
Rutile is synthetic rutile, 120 mesh of granularity in the rutile；
The feldspar powder is fine albite in powder, and partial size is 800 mesh；
The silica flour partial size is 200 mesh, wherein silicone content >=99.7wt%, and iron-content is 80~100ppm, moisture≤
0.05wt%；
The mica powder is high temperature resistant mica powder, wherein SiO2Content is 44~50wt%, Al2O3Content be 20~
33wt%, K2O content is 9~11wt%；
Fe content >=98wt% in the iron powder, P < 0.03wt%, S < 0.03wt%, hydrogen loss are 0.1~0.2wt%,
Partial size is 120 mesh.
The present invention also provides a kind of preparation methods of high deposition rate low hydrogen type iron powder electrode.
The preparation method of above-mentioned high deposition rate low hydrogen type iron powder electrode, comprising the following steps:
A, core wire is handled: cleaning core wire surface rusty stain, greasy dirt, impurity make the clean finishing in core wire surface；
B, the Passivation Treatment of ferroalloy: under atmospheric environment, so that oxidative deactivation containing ferrous components in coating；
C, the modulation of waterglass: the stirring of 5wt% methyl acrylate is added in waterglass, for use；
D, it ingredient: is weighed according to the ingredient of above-mentioned coating, for use；
E, dry-mixed, wet mixing: the waterglass that step c modulates is added in the compositions of surfacing metal that Step d obtains after mixing, is stirred
It mixes, mixes, obtain wet mass medicinal powder；
F, welding rod suppress: by hydraulic press by wet mass medicinal powder along core wire length direction be coated in a step process after core wire
On, make coating smooth surface, coating thickness is uniform, avoids core wire packet header；
G, it dries: the welding rod that f step makes being hung 24 hours in air, again 300~400 after its dry tack free
DEG C drying 1~2h to get.
The preparation method of above-mentioned high deposition rate low hydrogen type iron powder electrode, wherein the concentration of the waterglass be 45 Baume degrees,
Modulus M=2.9,5wt% methyl acrylate, which is added, can make electrode coating have certain moisture resistance.
The preparation method of above-mentioned high deposition rate low hydrogen type iron powder electrode, wherein welding rod described in g step is hung in air
Temperature be 15~25 DEG C, the relative humidity of air is 50%~55%.
High deposition rate low hydrogen type iron powder electrode of the present invention, by reasonable disposition raw material and coating constituent, in addition special
Different technique and the method for inspection has reached 134% so that high deposition rate low hydrogen type iron powder electrode deposition efficiency of the present invention is high；Weldering
Hardness number is larger after item welding, reaches 185.8, and numerical fluctuations are smaller, and weld hardness is ideal after welding rod welding.
Specific embodiment
High deposition rate low hydrogen type iron powder electrode of the present invention is made of core wire and the coating two parts being attached on core wire,
Described in coating be made of following parts by weight ingredient:
Further, above-mentioned high deposition rate low hydrogen type iron powder electrode, wherein the coating is made of following parts by weight ingredient:
Above-mentioned high deposition rate low hydrogen type iron powder electrode, wherein CaCO in the marble3Content > 97wt%, P≤
0.037wt%, S≤0.037wt%；
CaF in the fluorite2Content > 90wt%, 120 mesh of granularity；
Silicon in Ferrosilicon content >=the 75wt%；
Panxi Diqu anatase thpe white powder >=91.0wt% is used in the titanium dioxide；
The partial size of the wood powder is 80 mesh；
Rutile is synthetic rutile, 120 mesh of granularity in the rutile；
The feldspar powder is fine albite in powder, and partial size is 800 mesh；
The silica flour partial size is 200 mesh, wherein silicone content >=99.7wt%, and iron-content is 80~100ppm, moisture≤
0.05wt%；
The mica powder is high temperature resistant mica powder, wherein SiO2Content is 44~50wt%, Al2O3Content be 20~
33wt%, K2O content is 9~11wt%；
Fe content >=98wt% in the iron powder, P < 0.03wt%, S < 0.03wt%, hydrogen loss are 0.1~0.2wt%,
Partial size is 120 mesh.
Influence of each element to welding performance in core wire are as follows:
(1) carbon is the main alloy element in steel, and when carbon content increases, intensity, the hardness of steel are significantly improved, and plasticity
It reduces.In the welding process, carbon plays the role of certain deoxidation, and chemical combination occurs with oxygen under high arc temperature, generates
Arc region and molten bath surrounding air are excluded, prevent oxygen, the nitrogen pernicious gas pair in air by carbon monoxide and carbon dioxide gas
The adverse effect that molten bath generates reduces the content of oxygen and nitrogen in weld metal.If phosphorus content is excessively high, reduction is violent, can draw
Play biggish splashing and stomata.In view of carbon is on the hardenability of steel and its on the increased influence of crack sensitivity, low carbon steel welding core
Phosphorus content be generally less than 0.1%；
(2) manganese is a kind of preferable alloying constituent in steel, and with the increase of manganese content, intensity and toughness can be mentioned
It is high.In the welding process, manganese is also a kind of preferable deoxidier, can be reduced the content of oxygen in weld seam.Manganese and vulcanization, which are closed, forms sulphur
Change manganese to float in slag, to reduce weld seam hot cracking tendency.Therefore the manganese content of general structural carbon steel core wire is 0.30%
~0.55%；
(3) silicon is a kind of preferable alloying constituent, and suitable silicon is added in steel can improve the yield strength of steel, elasticity and anti-
Acid energy；If too high levels reduce plasticity and toughness.In the welding process, silicon also has preferable deoxidizing capacity, with oxygen shape
At silica, but it can improve the viscosity of slag, easily non-metallic inclusion be promoted to generate；
(4) chromium can be improved the hardness, wearability and corrosion resistance of steel.For mild steel, chromium is a kind of accidental
Impurity.The main metallurgical of chromium is characterized in being easy to abrupt oxidization, the oxide chrome green of infusibility is formed, to increase weldering
A possibility that stitching metallic inclusion.After chrome green is transitioned into slag, viscosity coefficient of dross can be made to improve, mobility reduces；
(5) nickel has a significant effect of comparison to the toughness of steel, when general cold impact value is more demanding, is suitably incorporated
Nickel；
(6) sulphur is a kind of objectionable impurities, with the increase of sulfur content, will increase the hot cracking tendency of weld seam, therefore core wire
The content of middle sulphur is not greater than 0.04%.When welding important feature, sulfur content is not greater than 0.03%；
(7) phosphorus is a kind of objectionable impurities, and the main harm of sulphur is that weld seam is made to generate cold short phenomenon, with the increasing of phosphorus content
Add, the toughness for causing weld metal, particularly low-temperature impact toughness is declined, therefore phosphorus content is not greater than in core wire
0.04%.When welding important feature, phosphorus content is not greater than 0.03%.
The effect and influence of each ingredient in coating specifically:
1, the effects of marble plays desulfurization, stabilising arc in the welding process, protects weld seam not by oxygen, nitridation.In desulfurization
It can occur to react as follows:
CaCO3→CaO+CO2
FeS+CaO→CaS+FeO
FeO+Mn→MnO+Fe
2, fluorite is strong diluent, and gas in weld metal is made to be easy to escape, can desulfurization.
3, ferrosilicon plays deoxidation, exothermic in the welding process, and its chemical lively type is high, can make weld metal stone
Mo Hua.Ferrosilicon can occur to react as follows when carrying out deoxidation:
2FeO+Si→SiO2+2Fe
4, titanium dioxide can play the role of multinomial in the welding process, and such as stabilising arc keeps spatter few；Form short slag；Energy
Active slag is generated, uniform fold protects weld seam in welded joints；Because TiO2 crystallization rate is fast, keep de- slag convenient；Weld ripples is careful；
Titanate is combined into iron oxide and enters slag, plays deoxidation, and reaction equation is as follows:
FeO+TiO2→FeTiO3
5, organic matter (wood powder, starch, resin) generates gas in combustion, make weld seam not with air oxidation, nitridation；
The general high resilience of organism, thus it is advantageous to suppressing.
6, rutile oxidisability is weak, welding arc stablility, good directionality, and appearance of weld is beautiful, and slag covers.
7, feldspar powder plays stabilising arc, slag making, is conducive to de- slag in right amount, will excessively slow down weldering speed, increases the viscous of slag
Degree.
8, silica flour plays slag making, and the gas sloughed in weld seam can be also reacted with iron oxide, accelerates weldering speed；In right amount may be used
The activity for increasing slag can excessively make slag glutinous, splash big.
9, mica powder plays stabilising arc, slag making, and springiness can increase coating gas permeability.Excessive excessively thick mica meeting
Keep coating loose, electrode surface is of poor quality.
10, titanium-iron powder or titanium valve have bigger deoxidizing capacity than ferrosilicon, and unsuitable dosage is excessive, because it is expensive.
For with high deposition rate low hydrogen type iron powder electrode of the present invention, with the increase of iron powder amount, coating burn-off rate adds
Fastly, length sleeve becomes smaller.Therefore suitable iron powder should be added, to obtain suitable length sleeve.Suitable iron powder amount can be by
Judge in welding slag weight and fusing welding rod weight ratio, i.e., as welding slag weight S and melt the ratio S/E=18 of welding rod weight E~
When 24%, welding rod length sleeve is suitable, and welding technological properties is good；As S/E < 18%, welding rod sleeve is short, and blow force of arc is small,
Weld that the quantity of slag is few, and skull is too thin simultaneously, the removability of slag is deteriorated；However as S/E > 24%, welding rod sleeve is too long, blow force of arc mistake
Greatly, the welding quantity of slag is more, and the effective rate of utilization of arc heat is low.When coating thickness difference, the suitable additional amount of iron powder is also different, works as medicine
When skin outer diameter is 6.8mm, the amount of iron powder is preferably controlled below 45%；When coating outer diameter is 8mm, the suitable plus people amount of iron powder is
45~63%.But iron powder plus people's amount and coating thickness increases all be it is limited, iron powder most greatly people's amount is usual not
More than 70%；Coating thickness, if indicated with D/d, maximum value is up to 2.5.In addition, when the additional amount difference of iron powder, institute
It is required that iron powder physical property it is also different, when additional amount is few, the iron powder of low loose ratio can be used.
Iron powder plays very big effect in the welding process, can accelerate the burn-off rate of coating, improves welding efficiency；Make
Weld metal increases, and improves deposition efficiency；Basic coating, which is added, can make arc stability.When iron powder is added excessive in coating,
It is just highly difficult in welding rod production, it is easy to keep coating blocked up and can not weld.
The present invention also provides a kind of preparation methods of high deposition rate low hydrogen type iron powder electrode.
The preparation method of above-mentioned high deposition rate low hydrogen type iron powder electrode, comprising the following steps:
A, core wire is handled: preprepared core wire being polished with sand paper, core wire surface is cleared up, keeps core wire surface clean
Finishing is straightened it, and weighs；
B, the Passivation Treatment of ferroalloy: under atmospheric environment, so that oxidative deactivation containing ferrous components in coating；
One or more ferroalloys, especially basic electrode are generally added in electrode coating, the iron being added in coating closes
Golden more, these ferroalloy powders, will interact during wet mixing with the free alkali in waterglass, can occur following anti-
It answers:
The hydrolysis of waterglass:
Na2SiO3+2H2O=2NaOH+H2SiO3
In coating added ferrosilicon because contain elemental silicon Si, so:
Si+2NaOH+H2O=Na2SiO3+2H2↑
There are also the reactions occurred between the manganese and water in coating:
Mn+2H2O=Mn (OH)2+H2↑
Above-mentioned generated reactive gas is coating expansion, hardening etc., these phenomenons seriously affect the quality of welding rod, make welding rod
Coating blistering, causes the welding rod of production to be scrapped.In order to avoid the generation of above phenomenon, copes with ferroalloy and is passivated processing,
Deactivation method has nature deactivation method, dry method deactivation method, wet process deactivation method；The present invention is handled using nature deactivation method；
C, the modulation of waterglass: 45 Baume degrees, modulus M=2.9 common waterglass in be added 5wt% methyl acrylate
Stirring, for use；When configuring waterglass, clean tap water is needed, and never grease, dirt etc. are mixed into, influence waterglass quality；
D, it ingredient: is weighed according to the ingredient of above-mentioned coating, for use；Make sure to keep in mind because weighed weight value itself is smaller,
There may be experimental errors, therefore have to weigh accurately, in order to avoid influence the quality of welding rod；
E, dry-mixed, wet mixing: the compositions of surfacing metal that Step d is obtained is stirred, and a kind of color is presented in medicinal powder after mixing,
And cannot have blocky, granular, dry powder cannot be spread out；It is gradually added into the waterglass that step c modulates again, is gently mixed, mixes,
Until can form dough, coating is made to have good plasticity and suitable stickiness, guarantee is easy to mould, and has preferably
Mobility, and be attached on around core wire securely, make coating that there is certain intensity；
F, welding rod suppress: by hydraulic press by wet mass medicinal powder along core wire length direction be coated in a step process after core wire
On, make coating smooth surface, coating thickness is uniform, avoids core wire packet header；
G, it dries: the welding rod that f step makes being hung 24 hours in air, again 300~400 after its dry tack free
DEG C drying 1~2h to get.
A kind of preparation method of above-mentioned high deposition rate low hydrogen type iron powder electrode, wherein welding rod described in g step is in air
The temperature hung is 15~25 DEG C, and the relative humidity of air is 50%~55%.
The efficiency of welding rod is the especially important problem for reducing the expenses such as artificial and material in welding procedure.It is general to survey
Fix list of items: nominal welding rod efficiency, practical welding rod efficiency, the welding base metal rate of recovery, deposition efficiency, deposition efficiency, to compare
The efficiency of welding rod.
Due to hydrogen controlled electrode mechanical property preferably and processing performance is poor, while usability of electrode can be determined mainly
In the composition of electrode coating, therefore, in order to preferably study each ingredient in coating and its match to a certain or certain of welding rod
The influence of performance, inventor have carried out compositions of surfacing metal by many experiments the study found that working as the composition of electrode coating
In following range, welding rod deposition performance is better than other proportions: 29~31 parts of marble；13~15 parts of fluorite；2~4 parts of ferrosilicon；
1.5~2.5 parts of titanium dioxide；1.5~2.5 parts of wood powder；14~16 parts of rutile；4~6 parts of feldspar powder；6~8 parts of silica flour；Mica
4~6 parts of powder；12~14 parts of titanium valve；39~41 parts of iron powder；Especially select 30 parts of marble；14 parts of fluorite；3 parts of ferrosilicon；Titanium white
2 parts of powder；2 parts of wood powder；15 parts of rutile；5 parts of feldspar powder；7 parts of silica flour；5 parts of mica powder；13 parts of titanium valve；40 parts of iron powder when
It waits, the hardness number of obtained welding rod is big, and welding rod deposition efficiency is high.
A specific embodiment of the invention is further described below with reference to embodiment, is not therefore limited the present invention
System is among the embodiment described range.
Embodiment 1
1, most representational several groups of experiments in many experiments are had chosen, only below to prove the welding rod of the invention selected
Coating recipe has higher deposition efficiency and hardness, and steps are as follows for specific experiment:
(1) core wire is handled: preprepared H08A core wire (its chemical component is shown in Table 1) is polished, directly with sand paper
Until core wire surface Ceng Guang is bright, it is straightened, and weighs；
1 H08A core wire chemical component (/wt%) of table
| Chemical component | C | Si | Mn | P | S | Ni | Cr |
| Core wire H08A | ≤0.10 | ≤0.03 | 0.30~0.55 | ≤0.03 | ≤0.03 | ≤0.30 | ≤0.20 |
(2) Passivation Treatment of ferroalloy: using natural deactivation method, aoxidize ferroalloy in an atmosphere；
(3) modulation of waterglass: in waterglass preparing pool, it is deployed into required concentration, and press liquid soluble glass weight
0.25%~0.5% potassium permanganate is added in amount, and stirring evenly can be used；
(3) ingredient: the coating recipe developed according to table 2 weighs each ingredient in formula.Make sure to keep in mind because of itself
Weighed weight value is smaller, it is understood that there may be experimental error, therefore have to weigh accurately, in order to avoid influence the quality of welding rod；
(4) dry-mixed: load weighted coating recipe being put into small basin, it is stirred with the core wire handled well until inciting somebody to action
It is uniformly mixed, and a kind of color is presented in medicinal powder, and cannot have blocky, granular, and when stirring cannot spread out dry powder；
(5) wet mixing: being gradually added into waterglass in the medicinal powder mixed, be gently mixed, and is uniformly mixed, until that can be formed
Until dough；
(6) welding rod suppress: by hydraulic press by wet mass medicinal powder along core wire length direction be coated in a step process after core wire
On, make coating smooth surface, coating thickness is uniform, avoids core wire packet header；
(7) it dries: the welding rod made being placed for 24 hours, is allowed to dry, it is desirable that temperature is controlled at 15~25 DEG C, air
Relative humidity is 50%~55%, and the welding rod dried is placed in drying box, and 1~2 hour is dried at 350~400 DEG C.
The coating recipe made is made into welding rod, according to experiment demand, every group of formula makes two respectively, and by each weldering
Item is numbered, and number is successively are as follows: ZP1, ZP2, ZP3, ZP4.
Coating component prescription in 2 welding rod of table
2, welding point Hardness Surveillance is analyzed
The sample of welding point hardness test should be intercepted by the method for machine cuts, be typically normal to welding point, and
It and should include all areas of welding point.The numerical value obtained by weld hardness such as the following table 3 is tested by experiment:
3 commissure hardness number of table (/HV)
| ZP1 | ZP2 | ZP3 | ZP4 | |
| 1 | 192.7 | 159.0 | 175.5 | 164.5 |
| 2 | 182.7 | 166.0 | 180.1 | 178.9 |
| 3 | 179.9 | 159.4 | 179.1 | 174.7 |
| 4 | 187.7 | 157.3 | 174.4 | 174.0 |
| Average value | 185.8 | 160.4 | 177.3 | 173.0 |
Data can be seen that from table 3, and hardness number is maximum after the welding of ZP1 group welding rod, and numerical fluctuations are smaller, welding rod welding
Weld hardness is ideal afterwards
3, deposition efficiency is tested
Welding rod deposition efficiency means the quality of formed deposited metal and the nominal mass of melted core wire after welding rod welding
The ratio between.It is well known that the major part in core wire forms deposited metal, but during Welding Metallurgy after welding rod fusing, along with
Complicated redox reaction, Partial Elements are oxidized, scaling loss, and into skull, therefore, the quality of core wire can not be completely formed
Deposited metal, it is meant that deposition efficiency is difficult to reach 100%.But the coating as welding rod important component, it can also participate in
Welding Metallurgy reaction, equally, the ferroalloy contained in coating in addition to play a part of protect molten metal, also by section transitions to melt
In metallisation, it is improved deposition efficiency.With the raising of ferroalloy especially iron powder additional amount in coating, deposition efficiency phase
It should improve, the deposition efficiency of certain high efficiency fe powder covered electrodes is even up to 200% or more.
The welding rod weight that deposited metal amount melts when being equal to the weight of base material plus welding, then subtract the weight of slag.
The each welding rod of table 4 corresponds to welding base metal weight
| Welding rod label | ZP1 | ZP2 | ZP3 | ZP4 |
| Weight (g) | 193.97 | 152.89 | 156.85 | 177.77 |
5 welding rod of table welding front and back and base material welding front and back weight
The welding consumption core wire weight of table 6
| Welding rod label | ZP1 | ZP2 | ZP3 | ZP4 |
| Welding consumption core wire weight (g) | 7.595 | 7.905 | 8.432 | 8.215 |
By calculate deposition efficiency is as shown in table 7 below:
7 welding rod deposition efficiency of table
| Welding rod label | ZP1 | ZP2 | ZP3 | ZP4 |
| Deposition efficiency (%) | 134 | 114 | 110 | 121 |
The data from table 7 illustrate that the ingredient welding rod utilization rate is high, iron in ingredient it is found that ZP1 group welding rod deposition efficiency highest
Powder content improves the deposition efficiency of welding rod, and the proportion of calcite and fluorite and iron powder at this time is preferably also.
In summary: ZP1 group welding rod deposition efficiency highest has reached 134%；Hardness number is larger after the welding of ZP1 group welding rod,
Reach 185.8, and numerical fluctuations are smaller, weld hardness is ideal after welding rod welding.
Claims (5)
1. high deposition rate low hydrogen type iron powder electrode is made of core wire and the coating two parts being attached on core wire, which is characterized in that
The core wire is H08A core wire, and the coating is made of following parts by weight ingredient:
The preparation method of the high deposition rate low hydrogen type iron powder electrode the following steps are included:
A, core wire is handled: cleaning core wire surface rusty stain, greasy dirt, impurity make the clean finishing in core wire surface；
B, the Passivation Treatment of ferroalloy: under atmospheric environment, so that oxidative deactivation containing ferrous components in coating；
C, the modulation of waterglass: the stirring of 5wt% methyl acrylate is added in waterglass, for use；The concentration of the waterglass is
45 Baume degrees, modulus M=2.9；
D, it ingredient: is weighed according to the ingredient of above-mentioned coating, for use；
E, dry-mixed, wet mixing: being added the waterglass that step c modulates for the compositions of surfacing metal that Step d obtains after mixing, stirring,
It mixes, obtains wet mass medicinal powder；
F, welding rod suppress: by hydraulic press by wet mass medicinal powder along core wire length direction be coated in a step process after core wire on, make
Coating smooth surface, coating thickness is uniform, avoids core wire packet header；
G, it dries: the welding rod that f step makes is hung 24 hours in air, dried again at 300~400 DEG C after its dry tack free
Dry 1~2h to get.
2. high deposition rate low hydrogen type iron powder electrode according to claim 1, it is characterised in that: the coating is by following parts by weight
At being grouped as:
3. high deposition rate low hydrogen type iron powder electrode according to claim 1 or claim 2, it is characterised in that: CaCO in the marble3
Content > 97wt%, P≤0.037wt%, S≤0.037wt%；
CaF in the fluorite2Content > 90wt%, 120 mesh of granularity；
Silicon in Ferrosilicon content >=the 75wt%；
Panxi Diqu anatase thpe white powder >=91.0wt% is used in the titanium dioxide；
The partial size of the wood powder is 80 mesh；
Rutile is synthetic rutile, 120 mesh of granularity in the rutile；
The feldspar powder is fine albite in powder, and partial size is 800 mesh；
The silica flour partial size is 200 mesh, wherein silicone content >=99.7wt%, and iron-content is 80~100ppm, moisture≤
0.05wt%；
The mica powder is high temperature resistant mica powder, wherein SiO2Content is 44~50wt%, Al2O3Content is 20~33wt%, K2O
Content is 9~11wt%；
Fe content >=98wt% in the iron powder, P < 0.03wt%, S < 0.03wt%, hydrogen loss are 0.1~0.2wt%, partial size
For 120 mesh.
4. the preparation method of any one of claims 1 to 3 high deposition rate low hydrogen type iron powder electrode, which is characterized in that including
Following steps:
A, core wire is handled: cleaning core wire surface rusty stain, greasy dirt, impurity make the clean finishing in core wire surface；
B, the Passivation Treatment of ferroalloy: under atmospheric environment, so that oxidative deactivation containing ferrous components in coating；
C, the modulation of waterglass: the stirring of 5wt% methyl acrylate is added in waterglass, for use；The concentration of the waterglass is
45 Baume degrees, modulus M=2.9；
D, it ingredient: is weighed according to the ingredient of coating as claimed in claim 1 or 2, for use；
E, dry-mixed, wet mixing: being added the waterglass that step c modulates for the compositions of surfacing metal that Step d obtains after mixing, stirring,
It mixes, obtains wet mass medicinal powder；
F, welding rod suppress: by hydraulic press by wet mass medicinal powder along core wire length direction be coated in a step process after core wire on, make
Coating smooth surface, coating thickness is uniform, avoids core wire packet header；
G, it dries: the welding rod that f step makes is hung 24 hours in air, dried again at 300~400 DEG C after its dry tack free
Dry 1~2h to get.
5. the preparation method of high deposition rate low hydrogen type iron powder electrode according to claim 4, it is characterised in that: institute in f step
Stating the temperature that welding rod is hung in air is 15~25 DEG C, and the relative humidity of air is 50%~55%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611108743.6A CN106624444B (en) | 2016-12-06 | 2016-12-06 | High deposition rate low hydrogen type iron powder electrode and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611108743.6A CN106624444B (en) | 2016-12-06 | 2016-12-06 | High deposition rate low hydrogen type iron powder electrode and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106624444A CN106624444A (en) | 2017-05-10 |
| CN106624444B true CN106624444B (en) | 2019-02-22 |
Family
ID=58818908
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611108743.6A Active CN106624444B (en) | 2016-12-06 | 2016-12-06 | High deposition rate low hydrogen type iron powder electrode and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106624444B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2102209C1 (en) * | 1993-06-11 | 1998-01-20 | Борис Васильевич Семендяев | Welding electrode |
| CN101108451A (en) * | 2006-07-18 | 2008-01-23 | 哈尔滨理工大学 | Novel slag system environment protection type low dust wire solder |
| CN102248329A (en) * | 2011-06-27 | 2011-11-23 | 天津市金桥焊材集团有限公司 | High-strength high-tenacity welding rod for E-grade cast steel repair welding |
| CN102658442A (en) * | 2012-05-08 | 2012-09-12 | 上海电力修造总厂有限公司 | Low-alloy steel covered arc welding electrode with Cr control capacity and FAC resisting capacity of weld metal of basic slag system |
| CN102974958A (en) * | 2012-11-23 | 2013-03-20 | 武汉铁锚焊接材料股份有限公司 | Welding rod matched with steel for hot galvanizing pot |
| CN103128463A (en) * | 2013-03-14 | 2013-06-05 | 西南石油大学 | Abrasion-resistant and corrosion-resistant iron-based amorphous surfacing welding electrode and manufacturing method thereof |
-
2016
- 2016-12-06 CN CN201611108743.6A patent/CN106624444B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2102209C1 (en) * | 1993-06-11 | 1998-01-20 | Борис Васильевич Семендяев | Welding electrode |
| CN101108451A (en) * | 2006-07-18 | 2008-01-23 | 哈尔滨理工大学 | Novel slag system environment protection type low dust wire solder |
| CN102248329A (en) * | 2011-06-27 | 2011-11-23 | 天津市金桥焊材集团有限公司 | High-strength high-tenacity welding rod for E-grade cast steel repair welding |
| CN102658442A (en) * | 2012-05-08 | 2012-09-12 | 上海电力修造总厂有限公司 | Low-alloy steel covered arc welding electrode with Cr control capacity and FAC resisting capacity of weld metal of basic slag system |
| CN102974958A (en) * | 2012-11-23 | 2013-03-20 | 武汉铁锚焊接材料股份有限公司 | Welding rod matched with steel for hot galvanizing pot |
| CN103128463A (en) * | 2013-03-14 | 2013-06-05 | 西南石油大学 | Abrasion-resistant and corrosion-resistant iron-based amorphous surfacing welding electrode and manufacturing method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106624444A (en) | 2017-05-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105256095B (en) | A kind of smelting process of the steel plate of high heat-input welding heat affected zone excellent performance | |
| CN108393614B (en) | High-quality welding wire steel wire rod and production method thereof | |
| CN103056549B (en) | Alkaline CO2 gas protection dilute alloy heat resistant steel flux-cored wire | |
| CN105921912B (en) | 1Cr12Ni2W1MoV stainless steel self-protection flux-cored wire and preparation method thereof | |
| CN103056548B (en) | High-strength heat-resistant steel gas-shielded solid wire | |
| CN101121987A (en) | Smelting method for titanium-containing austenitic stainless steel | |
| CN107081537B (en) | A kind of engineering machinery High Speed Welding metal powder-cored wire and its welding method | |
| CN108480875A (en) | A kind of welding wire medicinal powder, flux-cored wire and preparation and application | |
| CN103433642B (en) | Low-hydrogen basic electrode for 1Ni9 low-temperature steel welding and preparation method of low-hydrogen basic electrode | |
| JP3929035B2 (en) | Sulfur-containing free-cutting machine structural steel | |
| CN101913034A (en) | Low-hydrogen basic electrode for manual metal arc welding of FV520 (B) stainless steel | |
| CN107914099A (en) | Rutile-type flux-cored wire of 800MPa grades of tensile strength and preparation method thereof | |
| CN104531939B (en) | A kind of smelting process of high alloy high strength steel | |
| CN106425170B (en) | A kind of low hydrogen type iron powder electrode and preparation method thereof | |
| CN102400052A (en) | Narrow-hardenability pinion steel and preparation method thereof | |
| CN1644299A (en) | Build-up welding electrode for composite double-metal big gear re-manufacturing technology | |
| CN109226996A (en) | A kind of Austria's shellfish body steel track switch soldering welding rod and preparation method thereof | |
| CN106624444B (en) | High deposition rate low hydrogen type iron powder electrode and preparation method thereof | |
| CN105834614B (en) | A kind of low-alloy refractory steel electrode containing vanadium | |
| CN108971798B (en) | Special welding wire for mixed gas shielded austenitic stainless steel and preparation method thereof | |
| CN106736014A (en) | A kind of excellent wear-resisting alkaline flux-cored wire of the excellent welding performance of welding performance and preparation method | |
| CN110773899A (en) | Low-alloy steel electrode for welding SA-508Gr.3Cl.2 steel for nuclear reactor pressure vessel | |
| CN105908081B (en) | Low-alloy cast steel and its smelting process, heat treatment method and railway locomotive parts | |
| CN106425171B (en) | Low hydrogen type iron powder electrode and preparation method thereof | |
| CN108544127A (en) | 1Cr12NiW1MoV stainless steels and the stainless steel welded gas shielded type flux-cored wires and preparation method thereof of G520 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |