CN101104230A - Solid core soldering wire - Google Patents
Solid core soldering wire Download PDFInfo
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- CN101104230A CN101104230A CNA2007101034908A CN200710103490A CN101104230A CN 101104230 A CN101104230 A CN 101104230A CN A2007101034908 A CNA2007101034908 A CN A2007101034908A CN 200710103490 A CN200710103490 A CN 200710103490A CN 101104230 A CN101104230 A CN 101104230A
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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
- B23K35/3053—Fe as the principal constituent
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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
- B23K35/02—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
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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
- B23K35/40—Making wire or rods for soldering or welding
- B23K35/404—Coated rods; Coated electrodes
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
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- Chemical & Material Sciences (AREA)
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- Nonmetallic Welding Materials (AREA)
Abstract
The present invention relates to a solid welding wire, which contains 0.005 to 0.060 percent by quality of C, 0.60 to 1.00 percent by quality of Si, 1.10 to 1.65 percent by quality of Mn, 0.045 to 0.090 percent by quality of S, 0.0015 to 0.0100 percent by quality of O, the content of the C and the S is below to 0.125 percent by quality, that of the P is below to 0.017 percent by quality, the remaining content is Fe and inevitable impurity. In the impurity, Ti is must below to 0.15 percent by quality, B is must below to 0.0050 percent by quality, N is must below 0.0075 percent by quality, in addition, Cr, Ni, Al, Nb, V, Zr, La and Ce are all below 0.20 percent by quality. The solid welding wire can minimize welding cost, the feeding stability, burning puncture resistant, undercut resistant and crack resistant of the welding wire are all excellent, the sinter and splash are difficult to occur, the welding wire has the equal hardness with the original material which ensures that it is hard to occurring flimsiness damage.
Description
Technical field
The present invention relates to be used for the solid core welding wire of arc welding, relate to the solid core welding wire of the carbon steel that can be applicable to the thin plate arc welding in more detail.
Background technology
In recent years, the requirement from the consumption improvement of the relevant automobile of viewpoint of environmental problem strengthens.For the steel plate that correspondingly uses, replace with high-intensity steel plate more than the tensile strength 400MPa by the mild steel below the existing tensile strength 300MPa, to reduce thickness of slab, attempt to realize lightweight.
At this if reduce thickness of slab, though almost no problem in dot welding method, in the arc-welding method,, or say easily and burn owing to arc heat causes the steel plate fusion piercing.
In addition, the high strength of steel plate generally will be when rolling cooling control and be increased in the amount of element of adding in the steel plate and reach, the viscosity in the molten bath when but the increase of adding the element in the steel plate to can improve arc welding, amalgamation deterioration and lose weld toe thickness, or say undercut (undercut) takes place easily.
Have again aspect the welding execution, if improve the welding energy rate and strengthen speed of welding, then with respect to the molten bath electric arc in advance, electric arc will directly be run into fusion face easily, burns easily thus.In addition, do not burn even reach, when (also claiming fusion penetration penetration) in the inboard that is molten to soldered sheet material, the as easy as rolling off a log generation of heat cracking.
For example opening the purport of putting down in writing in the 2001-96392 communique the spy is, has stipulated the welding wire in the thin footpath below the 0.9mm of electrical impedance rate by use, near the heat energy the deposited amount is reduced, thereby be difficult to burn (promptly improving anti-burning property).
In addition, for example the purport of putting down in writing in No. 2922814 communique of special permission is, Si+Mn, the Si of regulation welding wire * (Si+Mn), and in Ar, contain the O of minute quantity (3～7%)
2Gas improves anti-burning property thus.This technology is based on the synergy of following two kinds of effects: improve the electrical impedance rate of welding wire by appropriateness, make effect that near the heat energy the deposited amount reduces and the ratio that improves the Ar of protective gas, thereby reduce the effect of fusion penetration.
In addition, for example open in flat 9-94667 communique and No. 3345883 communique of special permission the spy, the purport of record is to use the special welding feed chip that has assembled pottery at front end.This is in order to reduce by near the heat energy that improves the electrical impedance heat release that takes place between the energising point of the front end of welding feed chip and the electric arc origination point makes deposited amount, improve anti-burning property thus, simultaneously because the electric current reduction, arc force is suppressed, and has therefore suppressed the generation (promptly improving anti-undercut) of undercut.
In addition, for example opening the purport of putting down in writing in the 2005-254284 communique the spy is to use Ar and CO as protective gas
2, and make the O that wherein mixes a large amount of (5.5～15%)
2Thereby, change the molten bath to flow path direction, improve anti-undercut thus.
Also have, knownly empirically all the time can improve anti-burning property and anti-undercut, but on the welding position limits,, therefore have the difficult such problem of control if to the then a large amount of generations that hang and splash of bead of lower angle surplus by downward welding in the vertical position.
Yet, open the welding wire in this thin footpath of putting down in writing in the 2001-96392 communique the spy, so because be the buckling easily of thin footpath, and the feeding poor stability of welding wire, therefore the bad such problem of weld job is arranged.In addition, because the welding wire cost height in this thin footpath, so also involve the such problem of cost rising of welding.
In addition, specially permit the welding wire monomer of putting down in writing in No. 2922814 communique and can not solve the such problem of anti-burning property difference.If improve the ratio of protective gas Ar like this, then the cost of protective gas uprises in addition, therefore can involve the such problem of welding cost rising.
On the other hand, owing to use the spy to open this special welding feed chip of putting down in writing in flat 9-94667 communique and No. 3345883 communique of special permission, so the cost of chip uprises, the cost that therefore is related to welding rises.
And, open in the arc-welding method of putting down in writing in the 2005-254284 communique the spy, the cost of protective gas uprises owing to use special protective gas; the such problem of cost rising that therefore welding is arranged; in addition, because the oxygen amount is many, so the slag and a large amount of generation of splashing.Slag and the existence of splashing can bring the coating deterioration of weld part.In addition, the oxygen amount contained along with weld metal significantly increases, and field trash increases, and also has heat cracking that such problem takes place easily.
And, except above-mentioned problem,, just require to have the hardness with the equal above weld metal of mother metal in order to carry out certain general plate sheet welding of versatility, brittle break can not take place, have the slick and sly good feeding stability of carrying out of the welding of making.
Summary of the invention
The present invention carries out in view of above-mentioned problem, its purpose is, a kind of solid core welding wire is provided, this solid core welding wire is suppressed at Min. with the cost rising of welding, the feeding stability of welding wire, anti-burning property, anti-undercut, anti-crackle excellence, slag and splashing is difficult to take place and has the hardness of equal above weld metal with mother metal, thereby can not cause brittle break.
Solved the solid core welding wire of the present invention of described problem, it is a kind of solid core welding wire that uses in order to carry out arc welding, it contains C is 0.005～0.060 quality %, Si is 0.60～1.00 quality %, Mn is 1.10～1.65 quality %, S is 0.045～0.090 quality %, O is 0.0015～0.0100 quality %, and adding up to below the 0.125 quality % of the content of described C and described S, contain P below 0.017 quality %, surplus is Fe and inevitable impurity, in described impurity, Ti is limited in below the 0.15 quality %, B is limited in below the 0.0050 quality %, N is limited in below the 0.0075 quality %, in addition Cr, Ni, Al, Nb, V, Zr, La and Ce are limited in respectively below the 0.20 quality %.
Solid core welding wire of the present invention is limited to specific scope by the content with C, Si, Mn, S, O, and the viscosity in molten bath and surface tension are significantly reduced, and can make the molten bath form deeply when arc welding.Can obtain to relax the barrier effect of arc force thus, fusion penetration is reduced, therefore can improve anti-burning property.
In addition, because solid core welding wire of the present invention significantly reduces the viscosity in molten bath and surface tension, even so have under the situation of undercut generation, therefore the weld metal of fusion still can flow into the part of this undercut in the molten bath under the gravity effect, can solidify and undercut (promptly can improve anti-undercut) can not take place until weld.
And, solid core welding wire of the present invention is suitably changed the content of S and the content of O, thereby being difficult to take place slag and splashing, total content, the content of P and the total content of C and S of the content by making C, content, C and the S of S are suitably changed, and can make anti-crackle raising.
In addition, solid core welding wire of the present invention by containing the impurity of particular types in specific scope, thereby can prevent further that the viscosity in molten bath and surface tension from uprising, so can prevent further that the molten bath shoals when arc welding.Therefore, can more positively obtain to relax the barrier effect of arc force, fusion penetration is reduced, therefore can improve anti-burning property and anti-undercut, make and splash and slag more is difficult to take place.Particularly, can further improve anti-crackle,, can prevent the embrittlement of weld metal, therefore can further realize soundization of weld part by N being defined in below the specific content by N being defined in below the specific content.
Solid core welding wire of the present invention, preferably the total content with described O and described N is limited in below the 0.0110 quality %.In addition, solid core welding wire of the present invention preferably contains Mo below 0.30 quality %.
So, solid core welding wire of the present invention is defined in below the specific content by the total content with O and N, can prevent that the viscosity in molten bath from becoming low, therefore can further make anti-undercut raising.
And solid core welding wire of the present invention can make the intensity of weld metal improve by the interpolation of Mo, simultaneously by Mo being defined in below the specific content, can prevent that the viscosity in molten bath and surface tension from uprising, and the molten bath shoals when therefore preventing arc welding.Thus, can positively obtain to relax the barrier effect of arc force, fusion penetration is reduced, therefore can improve anti-burning property and anti-undercut, making splashes is difficult to take place.
Solid core welding wire of the present invention preferably on the surface of described solid core welding wire, has K, Li, Na and Ca with respect to described solid core welding wire integral body and adds up to 0.5～30ppm.
Solid core welding wire of the present invention, by making its surface coating and adhere at least a kind of element selecting from such group, by containing in described specific scope, then therefore the electronics emission is using Ar and oxidizing gas (O easily
2Or CO
2Deng) welding in, arc stabilizer works.Therefore, the variation of arc length can be suppressed, anti-burning property can be further improved.
Solid core welding wire of the present invention is on the surface of described solid core welding wire, and preferred described every 10kg solid core welding wire contains MoS
2Be 0.01～1.00g.
Solid core welding wire of the present invention is by making its surface coating and adhering to MoS
2, and contain at described particular range, the deposited minimizing of moment of energising point thus, impedance reduces, and welding wire feeding stability is improved.
Solid core welding wire of the present invention also can be by the copper facing surface that is covered.
By the copper facing solid core welding wire of the present invention that is covered, can realize resistance to rust raising, feed chip abrasion performance raising, when welding wire is produced because productive raising that the raising effect of stringiness is brought and thing followed cost degradation etc.
According to solid core welding wire of the present invention, the cost of welding can either be risen and be suppressed at Min., can make the feeding stability of welding wire, anti-burning property, anti-undercut, anti-crackle excellence again, the slag and the stable high yield of splashing are to take place, and have the hardness with the equal above weld metal of mother metal, thereby be difficult to take place brittle break.
Description of drawings
Fig. 1 (a) is the figure of explanation molten bath and fusion penetration when using under the situation of existing solid core welding wire about arc welding, (b) is the figure of explanation molten bath and fusion penetration when using under the situation of solid core welding wire of the present invention about arc welding.
Fig. 2 is the figure that is used to illustrate the suitable content range of the C that carries out for the solid core welding wire of absorbed costs invention and S.
Fig. 3 is the figure of definition that is used to illustrate the degree of depth of the explanation of overlapping fillet welding test and undercut.
Fig. 4 is used for illustrating the figure of the evaluation of anti-crackle as the crackle of evaluation object.
The specific embodiment
Next, describe the mode of the best be used to implement solid core welding wire of the present invention in detail.
Molten bath when present inventors are conceived to described downward welding in the vertical position and the movement of weld metal, further investigate with regard to following problem: if need not connect according to horizontal welding, downhand welding, transverse weld, up hill welding, position such as upright upwards welding, molten bath and weld metal just can be obtained and aforementioned same movement, then are believed to carry out better arc welding.
At first, describe with regard to the principle that present inventors reach the solid core welding wire of finishing of the present invention with reference to Fig. 1.Also have, Fig. 1 is the figure of the state of medelling ground demonstration arc welding, (a) is that the demonstration of medelling ground uses existing solid core welding wire to carry out the figure of the state of arc welding, is that the demonstration of medelling ground uses solid core welding wire of the present invention to carry out the figure of the state of arc welding (b).
Shown in Fig. 1 (a), in the arc welding of having used existing solid core welding wire 31, viscosity, the surface tension in molten bath 6 are big.Therefore, push away on the molten bath 6 that arc force and surface tension are brought P1 with respect to gravity P2 for big, so the decline that the gravity P2 in molten bath 6 self brings is little.That is, the degree of depth L1 in the molten bath 6 of electric arc under just is little, and fusion penetration L2 is big.
In addition, the origination point from chip 2/ solid core welding wire 31 energising points (mainly being the front end of chip 2) to electric arc 5 or ledge A and be formed at the impedance heating step-down of the molten drop 4 self of front end.
Therefore, present inventors find, shown in Fig. 1 (b), when downward welding in the vertical position, move just down from the electric arc rear to electric arc in the molten bath under the effect of gravity, promptly under electric arc, often be formed with dark molten bath,, will be difficult to burn (raising of anti-burning property) by relaxing the barrier effect onset of arc force.In addition, even moment property ground produces undercut, the decline effect in the molten bath that gravity brings also can be brought into play effect energetically, and the weld metal in molten bath flows into the place of this generation undercut, therefore undercut disappearance (raising of anti-undercut) when solidifying.
This be because, reduce P from viscosity, the surface tension in the molten bath 6 that electric arc 5 forms to the welding rear just down
1Diminish and by P
2Surpass, thereby molten bath 6 is fallen under the electric arc 5.Thus, strengthened the degree of depth L in the molten bath 6 under electric arc 5
1, anti-effect of having made arc force, thus make fusion penetration L
2Reduce.
What present inventors furtherd investigate found that, by improving the electrical impedance of solid core welding wire self, temperature is risen, weld heat energy by the fusion that the reduction arc heat brings to reduce, and be grouped into suitableization by the one-tenth that makes solid core welding wire, thereby the viscosity in molten bath and surface tension are significantly reduced, play a role fully, even above-mentioned mechanism also can be realized in the position beyond downward welding in the vertical position in the gravity effect in molten bath.
Also have stage of research as can be known, if by having the high oxidation of known gas componant now, with the such method of reduction of the strong deoxidation composition of Si that contains as the solid core welding wire composition and Mn etc. and carry out high oxidation, the viscosity in molten bath and surface tension are reduced, then the deterioration of the generation of a large amount of generations of slag, pore, bead shape, the such problem pilosity of increase that splashes.
Present inventors also find, as the method for improving this problem, the content of S and O are suitably changed, thereby slag is difficult to take place with splashing, and can keep under the good state viscosity in molten bath and surface tension significantly being reduced in the bead shape.
In addition we know, if high concentration ground contains S, then heat cracking takes place easily usually.Present inventors also find, suitably the what is called of the total content of content, C and the S of the content of the content of regulation C, P, S is stipulated the content of element, especially as shown in Figure 2, even when containing S with high concentration, by suitably stipulating the content of C, also can allow heat cracking be difficult to take place (raising of anti-crackle).Also have, Fig. 2 is the figure that is used to illustrate the suitable content range of the C that carries out for the solid core welding wire of absorbed costs invention and S.
Present inventors have finished the solid core welding wire of the present invention that is fit to carry out arc welding under these are found.
Solid core welding wire of the present invention, contain C and be 0.005～0.060 quality %, Si and be 0.60～1.00 quality %, Mn and be 1.10～1.65 quality %, S and be 0.045～0.090 quality %, O and be the adding up to below the 0.125 quality % of content of 0.0015～0.0100 quality % and described C and described S, contain P below 0.017 quality %, surplus is Fe and inevitable impurity.
Below, describe for the reason of in solid core welding wire of the present invention, carrying out numerical definiteness.
(C:0.005～0.060 quality %)
C has deoxidation, and the effect of the intensity that improves weld metal is arranged.Because in plate sheet welding, do not carry out the multilayer welding, so need not consider the intensity that the torrid zone is come reduces again, also can access high-strength steel sheet (high-tensile steel) with few additive, can access and the equal above intensity of mother metal from the mild steel below the 300MPa of general use to the 590MPa level.
But, if the content reduction that makes C until being lower than 0.005 quality %, then only can reach the intensity that is applicable to mild steel and not have versatility.Therefore, C need contain more than the 0.005 quality %.
On the other hand, if the content of C uprises, then as described above, the remarkable deterioration of anti-crackle.In addition, because near CO outburst electric arc, becoming of not only splashing is many, and the generation of flue dust is also many.In addition, because the deoxidation surplus, so the oxygen in molten bath reduces, the viscosity and the surface tension in molten bath uprise.Therefore, the barrier effect that relaxes arc force reduces anti-burning property and the easy variation of anti-undercut.Therefore, guarantee anti-crackle and the C that dopes need contain below the 0.060 quality %, preferably contain below the 0.050 quality %.Also have as described later,, the higher limit of C is further reduced according to the content of S.
(Si:0.60～1.00 quality %)
Si is used to guarantee intensity and a kind of element of needs, and the effect of the electrical impedance that improves solid core welding wire is arranged.Intensity descends when being lower than 0.60 quality %, becomes the intensity that all can not be suitable for except that mild steel.In addition, because the electrical impedance of solid core welding wire is too small, so near the current value the amount of feeding rises.Consequently because heat energy uprises, so anti-burning property and the easy variation of anti-undercut.Therefore, Si need contain more than the 0.60 quality %.
On the other hand, if the content of Si surpasses then deoxidation surplus of 1.00 quality %, the oxygen in molten bath reduces, and viscosity, the surface tension in molten bath uprise.Therefore, the barrier effect that relaxes arc force reduces anti-burning property and the easy variation of anti-undercut.In addition, if the then added metal embrittlement of Si surplus might be lost viabilities such as hardness for weld part.Therefore, Si need be below 1.00 quality %.
(Mn:1.10～1.65 quality %)
Mn also is a kind of element of guaranteeing that intensity needs, and the effect of the electrical impedance that improves solid core welding wire is arranged.If the content of Mn is lower than then intensity decline of 1.10 quality %, become the intensity that except that mild steel, can not be suitable for.In addition, because the electrical impedance of solid core welding wire becomes too small, so near the current value the amount of feeding rises.Consequently because heat energy uprises, so anti-burning property and the easy variation of anti-undercut.Very few as if Mn in addition, then weld metal embrittlement, the viability that might lose weld part.Therefore, Mn need contain more than the 1.10 quality %.
On the other hand, if the content of Mn surpasses 1.65 quality %, then deoxidation surplus, the oxygen in molten bath reduces, and the viscosity in molten bath, surface tension uprise.Therefore, the weld metal in molten bath will be difficult to fall under the electric arc, so be used to relax the barrier effect reduction of arc force, anti-burning property and the easy variation of anti-undercut.In addition, because also generation in a large number of slag, so the coating deterioration.Therefore Mn need contain below the 1.65 quality %.
(S:0.045～0.090 quality %)
S is one of most important element of the present invention, and the viscosity in realization molten bath and the effect that surface tension reduces are arranged.By containing S with suitable content, even when electric arc is gone ahead of the rest with respect to the molten bath,, will obtain to relax the barrier effect of arc force easily owing to be the low molten bath of viscosity and surface tension, therefore can anti-burning property and anti-undercut raising.In order to obtain such effect, need contain S more than 0.045 quality %.
On the other hand, if S has content to surpass 0.090 quality %, then not only the surface tension of molten bath but also the molten drop that forms at the solid core welding wire front end also greatly reduces, and it is spherical that molten drop can't keep.In addition, combine with the molten bath that forms blocked uply, even arc length is provided with to such an extent that very longly still can be in short-circuit condition, therefore splashing becomes very many.In addition, even still can not realize the raising of anti-crackle by the adjustment of other elements, when melting to steel plate inboard heat cracking will take place significantly easily.In addition, the viscosity in molten bath excessively reduces, and bead becomes sagging easily under the effect of gravity, is difficult to form bead, the easy deterioration of anti-undercut in the upper plate side of overlapping fillet welding.Weld metal embrittlement in addition, the viability that also might lose weld part.Therefore, S need contain below the 0.090 quality %.Also have,, more preferably contain S below 0.073 quality % from viewpoint that improves anti-undercut and the viewpoint (promptly preventing the embrittlement of added metal) that improves toughness.
(O:0.0015～0.0100 quality %)
Add the O of appropriate amount with S, can appropriateness reduce the viscosity and the surface tension in molten bath, therefore can improve anti-burning property and anti-undercut effectively.In order to play this effect, need contain O more than 0.0015 quality %.
On the other hand, if the O content of solid core welding wire surpasses 0.0100 quality %, therefore the then viscosity and the capillary reduction surplus in the high oxidation molten bath of bringing can produce the deterioration of the anti-crackle that the increase of a large amount of generations, the field trash of the increase of splashing, slag brings etc.Though it is poor that anti-burning property is difficult to,,, be difficult to form bead, the easy bad variation of anti-undercut in the upper plate side of overlapping fillet welding so bead is sagging easily under the effect of gravity because the viscosity in molten bath excessively reduces.In addition, the possible embrittlement of weld metal, the viability forfeiture of weld portion.Therefore, O need contain below the 0.0100 quality %.Also have, according to the content of the N of following elaboration, the higher limit of O also has the situation that is preferably further reduction as described later.
Contain O in order to make in the solid core welding wire by described content, can by as inferior method carry out: the condition of the deoxidation treatment when making melting slows down, thereby the content of the O in the wire rod is risen, perhaps when the wire drawing of solid core welding wire, anneal, make the oxidation generation and make it residual with near surface, make the O multiviscosisty on the surface.
(total of the content of C and S: 0.125 quality % is following)
C and S are the elements that makes anti-crackle deterioration, set its higher limit respectively, but if their total content surpasses 0.125 quality %, even then C and S contain below described higher limit respectively, anti-crackle is deterioration easily still.Therefore, in order to improve anti-crackle, the total content that needs C and S is below 0.125 quality %.
(P:0.017 quality % is following)
P is the same with C can to make anti-crackle deterioration significantly, therefore should do one's utmost to reduce.According to JIS Z3312, the content of P allows to reach 0.030 quality %, but in the present invention owing to having improved the content of S, so need relativity ground to reduce the content of P so that anti-crackle is difficult for deterioration.Particularly if the content of P surpasses 0.017 quality %, when then melting to steel plate inboard, heat cracking easily takes place significantly.Therefore, containing of P need be below 0.017 quality %.
(surplus is Fe and impurity)
And the remainder of solid core welding wire of the present invention is made of Fe and impurity.
Impurity can be limited in Ti below the 0.15 quality % respectively, B is limited in below the 0.0050 quality %, N is limited in below the 0.0075 quality %, and Cr, Ni, Al, Nb, V, Zr, La and Ce are limited in respectively below the 0.20 quality % in addition.
Owing to contain Cr, Ni, Al, Nb, V, Zr, La and Ce, the viscosity and the surface tension in molten bath uprise.Consequently, melt metal is difficult to fall under the electric arc in the molten bath, and the barrier effect that therefore relaxes arc force reduces, not only anti-burning property and the easy variation of anti-undercut, and the also generation in a large number of splashing.
In addition, the element beyond the Ni is because the meeting oxidation so slag also takes place in a large number, makes the coating deterioration.
If containing, B surpasses the easily remarkable deterioration of the then anti-crackle of 0.0050 quality %.If containing, N surpasses 0.0075 quality %, then added metal embrittlement, and the viability of the hardness of weld part etc. might be lost.
Therefore, preferably do one's utmost to reduce above-mentioned impurity, if but in described scope, then allow it in solid core welding wire of the present invention, to contain.Also have, more preferably Cr and Ni are below 0.05 quality %, and Ti is below 0.05 quality %, and Al, Nb, V, Zr, La and Ce are below 0.01 quality %, and B is below 0.0030 quality %.Even if do not have benefit if actively add impurity for the purpose of inventing, can be described as category of the present invention yet in these scopes.
And, solid core welding wire of the present invention, preferably the total content with O and N is limited in below the 0.0110 quality %, more preferably contains Mo below 0.30 quality %.
(the total content of O and N: 0.0110 quality % is following)
If the total content of O and N surpasses 0.0110 quality %, though out of question for anti-burning property, the viscosity in molten bath excessively reduces, therefore bead is sagging easily under the effect of gravity, upper plate side in overlapping fillet welding is difficult to form bead, the easy variation of anti-undercut.Therefore, the total content of O and N is preferably below the 0.0110 quality %.
(Mo:0.30 quality % is following)
Mo can improve the intensity of weld metal.Though it is special that the effective lower limit of this effect does not have, and can obtain described effect significantly but contain more than the 0.05 quality %.
On the other hand, if the content of Mo surpasses 0.30 quality %, then the viscosity in molten bath and surface tension uprise.Consequently the motlten metal in molten bath is difficult to fall under the electric arc, and the barrier effect that therefore relaxes arc force reduces anti-burning property and the easy variation of anti-undercut.Splash in addition and also take place in a large number.Therefore, Mo preferably contains below the 0.30 quality %.
In addition, solid core welding wire of the present invention preferably on the surface of this solid core welding wire, contains the element of selecting more than at least a kind and adds up to 0.5～30ppm from K, Li, Na and Ca.In addition, solid core welding wire of the present invention more preferably contains MoS on this solid core welding wire surface
2Be 0.01～1.00g/10kg.
(, contain the element of from K, Li, Na, Ca, selecting more than at least a kind and add up to 0.5～30ppm) with respect to solid core welding wire integral body on the surface of this solid core welding wire
Even it is also no problem not contain K, Li, Na, Ca, using Ar and oxidizing gas (O
2, CO
2) welding in, these elements work as arc stabilizer.If these elements are in the near surface of molten drop, then the electronics emission helps the stabilisation of electric arc easily.If it is unstable that electric arc becomes, then arc length changes, and arc force also changes.The easy variation of anti-thus burning property, therefore preferred electric arc is stable as much as possible.Among the above-mentioned element that the stabilisation of electric arc can work as arc stabilizer by coating more than at least a kind or make it to contain and obtain, its effect contains more than the 0.5ppm with respect to the whole total of solid core welding wire for these elements, can significantly obtain the stabilisation of electric arc thus.
But, if contain above-mentioned element with respect to the whole total of solid core welding wire above 30ppm, then not only the effect of arc stabilityization is saturated, and can make the lubricity on surface of solid core welding wire impaired on the contrary, the possibility that has feeding stability to reduce, therefore from the viewpoint of practicality with this as higher limit.
Also have, they add difficulty in melting.Thereby as having by the method that makes it to exist at the above-mentioned element of solid core welding wire surface coating etc., (a) for example in wire-drawing process, use potash, lithium carbonate, sodium carbonate, calcium carbonate etc. have K, Li, Na, the wire drawing lubricant that Ca sneaks into, make it remained on surface at solid core welding wire, (b) for example, impregnated in and contain K, Li, Na, annealing after in the solution of Ca, make it crystal boundary or intragranular diffusion on the solid core welding wire surface, (c) in addition, for example use potassium cyanide, sodium cyanide solution is implemented copper facing, (d) for example will contain K in addition, Li, Na, the oil of Ca ion is coated with as feeding lubricating oil, makes it thus near surface coating etc.
(on the surface of this solid core welding wire, every 10kg solid core welding wire contains MoS
2Be 0.01～1.00g)
If there is MoS in the solid core welding wire surface
2, then in the deposited minimizing of moment of energising point, impedance reduces, and the feeding stability of going through this solid core welding wire improves.If the feeding of solid core welding wire stability is unstable, then arc length also becomes unstable, and arc force also can change.The easy variation of anti-thus burning property, the feeding stability of therefore preferred solid core welding wire are stable as much as possible.If coating MoS
2, then can make anti-burning property raising, its effect is that every 10kg solid core welding wire is coated with MoS on the surface
2For effective more than the 0.01g.
On the other hand, every 10kg solid core welding wire is coated with MoS on the surface
2Surpass 1.00g, in feeding lining (liner) and energising chip, can pile up MoS
2And stop up easily, diminish lubricity on the contrary, feeding stability is reduced.Therefore, in the MoS of solid core welding wire surface coating (containing)
2Content be preferably below the 1.00g.
Also have, as solid core welding wire is coated with MoS
2Coating process just like inferior method: it is blended in the drawing compound in the wire-drawing process, makes it remaining, perhaps be mixed in the lubricating oil of final diameter coating until final diameter.
(copper facing)
In addition, solid core welding wire of the present invention also can be covered by copper facing.
General solid core welding wire is by copper facing lining original material wire ground surface, can realize the productive raising of keeping, bringing owing to the raising effect of stringiness when welding wire is produced of abrasion performance of raising, energising chip of resistance to rust and cost degradation etc.
Also have, during not by copper facing lining original material wire surperficial, the electrical impedance of conducting parts rises.Because exothermal effect at this moment causes the temperature of solid core welding wire when arriving the electric arc nidus to uprise, cause the solid core welding wire state of fusing easily.Because the source of welding current provides only enough electric currents that melts the solid core welding wire that is fed, thus the solid core welding wire generation low currentization of state easily melted, if fusion amount one rule can reduce heat energy.Fusion penetration can be further reduced for this reason, also arc force can be weakened.Can make anti-undercut raising thus.
[embodiment]
Next, with regard to solid core welding wire of the present invention, the comparative example that satisfies the embodiment of necessary condition of the present invention and discontented unabridged version invention necessary condition is contrasted and be elaborated.
The diameter that making has the constituent shown in table 1～3 is the solid core welding wire of 1.2mm, estimates for following each assessment item: (1) anti-burning property; (2) anti-undercut; (3) weld metal hardness; (4) anti-crackle; (5) generating capacity that splashes; (6) feeding stability; (7) rate that is wrapped of slag; (8) pendulum impact absorption energy.Also have, the evaluation method of assessment item (1)～(8) is as follows.
| 54 | 0.057 | 0.95 | 1.20 | 0.010 | 0.057 | 0.114 | - | - | - | - | - | - | - | - | - | - | 0.0040 | 0.0040 | 0.0080 | - | - | - | Have |
| 55 | 0.057 | 0.95 | 1.20 | 0.010 | 0.057 | 0.114 | - | - | - | 0.050 | - | - | - | - | - | - | 0.0040 | 0.0040 | 0.0080 | - | - | - | Have |
| 56 | 0.057 | 0.62 | 1.63 | 0.010 | 0.065 | 0.122 | - | - | - | - | - | - | - | - | - | - | 0.0040 | 0.0040 | 0.0080 | - | - | - | Have |
| 57 | 0.003 | 0.80 | 1.40 | 0.010 | 0.060 | 0.063 | - | - | - | - | - | - | - | - | - | - | 0.0025 | 0.0055 | 0.0080 | - | K：5 | 0.10 | Have |
| 58 | 0.070 | 0.80 | 1.40 | 0.010 | 0.050 | 0.120 | - | - | - | - | - | - | - | - | - | - | 0.0025 | 0.0055 | 0.0080 | - | K：5 | 0.10 | Have |
| 59 | 0.035 | 0.57 | 1.15 | 0.010 | 0.060 | 0.095 | - | - | - | - | - | - | - | - | - | - | 0.0025 | 0.0055 | 0.0080 | - | K：5 | 0.10 | Have |
| 60 | 0.035 | 1.02 | 1.55 | 0.010 | 0.060 | 0.095 | - | - | - | - | - | - | - | - | - | - | 0.0025 | 0.0055 | 0.0080 | - | K：5 | 0.10 | Have |
| 61 | 0.035 | 0.62 | 1.08 | 0.010 | 0.060 | 0.095 | - | - | - | - | - | - | - | - | - | - | 0.0025 | 0.0055 | 0.0080 | - | K：5 | 0.10 | Have |
| 62 | 0.030 | 0.75 | 0.95 | 0.013 | 0.080 | 0.110 | - | - | 0.002 | - | - | - | - | - | - | - | 0.0020 | 0.0040 | 0.0060 | - | - | - | Have |
[table 3]
| No. | C | Si | Mn | P | S | C+S | Cr | Ni | Al | Ti | Nb | V | Zr | La | Ce | B | N | O | O+N | Mo | K，Na，Li，Ca | MoS 2 | Copper facing |
| 63 | 0.040 | 0.90 | 1.67 | 0.008 | 0.060 | 0.100 | - | - | - | - | - | - | - | - | - | - | 0.0025 | 0.0055 | 0.0080 | - | K：5 | 0.10 | Have |
| 64 | 0.040 | 0.95 | 1.80 | 0.012 | 0.090 | 0.130 | - | - | 0.003 | - | - | - | - | - | - | - | 0.0080 | 0.0030 | 0.0110 | - | - | - | Have |
| 65 | 0.020 | 0.80 | 1.40 | 0.018 | 0.060 | 0.080 | - | - | - | - | - | - | - | - | - | - | 0.0025 | 0.0055 | 0.0080 | - | K：5 | 0.10 | Have |
| 66 | 0.020 | 0.85 | 1.35 | 0.019 | 0.040 | 0.060 | - | - | 0.003 | - | - | - | - | - | - | - | 0.0050 | 0.0060 | 0.0110 | - | - | - | Have |
| 67 | 0.035 | 0.80 | 1.40 | 0.010 | 0.044 | 0.079 | - | - | - | - | - | - | - | - | - | - | 0.0045 | 0.0055 | 0.0100 | - | K：5 | 0.10 | Have |
| 68 | 0.035 | 0.80 | 1.40 | 0.010 | 0.094 | 0.129 | - | - | - | - | - | - | - | - | - | - | 0.0025 | 0.0055 | 0.0080 | - | K：5 | 0.10 | Have |
| 69 | 0.090 | 1.05 | 1.50 | 0.012 | 0.100 | 0.190 | - | - | 0.004 | - | - | - | - | - | - | - | 0.0070 | 0.0030 | 0.0100 | - | - | - | Have |
| 70 | 0.050 | 0.80 | 1.40 | 0.012 | 0.078 | 0.128 | - | - | - | - | - | - | - | - | - | - | 0.0025 | 0.0055 | 0.0080 | - | K：5 | 0.10 | Have |
| 71 | 0.040 | 0.80 | 1.40 | 0.006 | 0.088 | 0.128 | 0.02 | 0.02 | - | 0.005 | - | - | - | - | - | - | 0.0073 | 0.0020 | 0.0093 | - | - | - | Do not have |
| 72 | 0.060 | 0.65 | 1.25 | 0.010 | 0.067 | 0.127 | - | - | 0.007 | - | - | - | - | 0.007 | - | - | 0.0015 | 0.0018 | 0.0033 | 0.25 | Li：0.9 | 0.50 | Have |
| 73 | 0.060 | 0.90 | 1.45 | 0.010 | 0.075 | 0.135 | - | - | 0.002 | - | - | - | - | - | - | - | 0.0059 | 0.0059 | 0.0118 | - | - | - | Have |
| 74 | 0.035 | 0.80 | 1.40 | 0.010 | 0.060 | 0.095 | 0.21 | - | - | - | - | - | - | - | - | - | 0.0025 | 0.0055 | 0.0080 | - | K：5 | 0.10 | Have |
| 75 | 0.035 | 0.80 | 1.40 | 0.010 | 0.060 | 0.095 | - | 0.21 | - | - | - | - | - | - | - | - | 0.0025 | 0.0055 | 0.0080 | - | K：5 | 0.10 | Have |
| 76 | 0.035 | 0.80 | 1.40 | 0.010 | 0.060 | 0.095 | - | - | 0.21 | - | - | - | - | - | - | - | 0.0025 | 0.0055 | 0.0080 | - | K：5 | 0.10 | Have |
| 77 | 0.035 | 0.80 | 1.40 | 0.010 | 0.060 | 0.095 | - | - | - | 0.16 | - | - | - | - | - | - | 0.0025 | 0.0055 | 0.0080 | - | K：5 | 0.10 | Have |
| 78 | 0.035 | 0.80 | 1.40 | 0.010 | 0.060 | 0.095 | - | - | - | - | 0.21 | - | - | - | - | - | 0.0025 | 0.0055 | 0.0080 | - | K：5 | 0.10 | Have |
| 79 | 0.035 | 0.80 | 1.40 | 0.010 | 0.060 | 0.095 | - | - | - | - | - | 0.21 | - | - | - | - | 0.0025 | 0.0055 | 0.0080 | - | K：5 | 0.10 | Have |
| 80 | 0.035 | 0.80 | 1.40 | 0.010 | 0.060 | 0.095 | - | - | - | - | - | - | 0.21 | - | - | - | 0.0025 | 0.0055 | 0.0080 | - | K：5 | 0.10 | Have |
| 81 | 0.035 | 0.80 | 1.40 | 0.010 | 0.060 | 0.095 | - | - | - | - | - | - | - | 0.21 | - | - | 0.0025 | 0.0055 | 0.0080 | - | K：5 | 0.10 | Have |
| 82 | 0.035 | 0.80 | 1.40 | 0.010 | 0.060 | 0.095 | - | - | - | - | - | - | - | - | 0.21 | - | 0.0025 | 0.0055 | 0.0080 | - | K：5 | 0.10 | Have |
| 83 | 0.035 | 0.80 | 1.40 | 0.010 | 0.060 | 0.095 | - | - | - | - | - | - | - | - | - | 0.0055 | 0.0060 | 0.0055 | 0.0115 | - | K：5 | 0.10 | Have |
| 84 | 0.035 | 0.80 | 1.40 | 0.010 | 0.060 | 0.095 | - | - | - | - | - | - | - | - | - | - | 0.0080 | 0.0025 | 0.0105 | - | K：5 | 0.10 | Have |
| 85 | 0.035 | 0.80 | 1.40 | 0.010 | 0.060 | 0.095 | - | - | - | - | - | - | - | - | - | - | 0.0045 | 0.0012 | 0.0057 | - | K：5 | 0.10 | Have |
| 86 | 0.035 | 0.80 | 1.40 | 0.010 | 0.060 | 0.095 | - | - | - | - | - | - | - | - | - | - | 0.0010 | 0.0105 | 0.0115 | - | K：5 | 0.10 | Have |
| 87 | 0.035 | 0.80 | 1.40 | 0.010 | 0.060 | 0.095 | - | - | - | - | - | - | - | - | - | - | 0.0025 | 0.0055 | 0.0080 | 0.35 | K：5 | 0.10 | Have |
| 88 | 0.035 | 0.80 | 1.40 | 0.010 | 0.060 | 0.095 | - | - | - | - | - | - | - | - | - | - | 0.0025 | 0.0055 | 0.0080 | - | K：32 | 0.10 | Have |
| 89 | 0.035 | 0.80 | 1.40 | 0.010 | 0.060 | 0.095 | - | - | - | - | - | - | - | - | - | - | 0.0025 | 0.0055 | 0.0080 | - | Ca：5，Na：20，K：7 | 0.10 | Have |
| 90 | 0.035 | 0.80 | 1.40 | 0.010 | 0.060 | 0.095 | - | - | - | - | - | - | - | - | - | - | 0.0025 | 0.0055 | 0.0080 | - | K：5 | 1.10 | Do not have |
| 91 | 0.050 | 0.65 | 1.63 | 0.015 | 0.047 | 0.097 | 0.02 | 0.02 | 0.003 | 0.009 | 0.008 | 0.005 | 0.008 | 0.001 | 0.001 | 0.0006 | 0.0025 | 0.0070 | 0.0095 | 0.15 | - | 1.10 | Have |
| 92 | 0.050 | 0.25 | 1.25 | 0.022 | 0.018 | 0.068 | - | - | - | 0.08 | - | - | - | - | - | - | 0.0050 | 0.0020 | 0.0070 | - | - | - | Have |
| 93 | 0.100 | 0.75 | 1.85 | 0.010 | 0.002 | 0.102 | 0.20 | - | 0.012 | 0.15 | - | - | - | - | - | 0.0060 | 0.0020 | 0.0020 | 0.0040 | 0.32 | - | - | Have |
(1) anti-burning property
Fig. 3 is the figure of definition that is used to illustrate the degree of depth of the explanation of overlapping fillet welding test and undercut.
As shown in Figure 3, with the carbon steel sheet of thickness of slab 2.0mm, tensile strength 520MPa lap joint, carry out overlap welding with flat-hand position, speed of welding 80cm/min as root gap (root gap) 0.5mm, overlay region (overlap space) 4mm.At this moment protective gas consist of Ar80%+CO
220%, polarity is the mother metal negative electrode, and the outstanding length of solid core welding wire is 15mm.Electric current is changed with every 5A, and the feed speed of the solid core welding wire under the current value of the maximum of not burning is used for the evaluation of anti-burning property as boundary feed speed (m/min).Here why estimating anti-burning property without current value, is that the relation that has of current value and feed speed can change owing to the one-tenth according to solid core welding wire is grouped into.Also have, magnitude of voltage is adjusted into the current value variation that order makes it to change, if the most stable its value that becomes judgement (best judgment value) that then makes of electric arc.If so, in deposited amount one regularly, the big more fusion penetration of boundary feed speed is shallow more, therefore anti-burning property excellence.
The evaluation of anti-burning property, boundary feed speed are be evaluated as good (zero) that 5.60m/min is above, be lower than 6.50m/min, further being evaluated as more than 6.50m/min good (◎).With respect to this, the boundary feed speed is lower than being evaluated as of 5.60m/min bad (*).Also have, good (zero's) and good (◎) is that qualified, bad (*) is defective.
(2) anti-undercut
The result of the test of foundation (1), current value is set at (current value of boundary feed speed-30A), voltage is set at (best judgment value+2A), the microphoto (10 times of multiplying powers) of the section of the weld seam when taking welding, measure the degree of depth (also have, in table 4～6, be expressed as " degree of depth of undercut (mm) ") of the undercut of weld toe by this section microphoto.As shown in Figure 3, the both sides of instrumentation upper plate side and lower plate side, with maximum as evaluation of estimate.
The evaluation of anti-undercut, above-mentioned maximum below 0.50mm, surpass be evaluated as good (zero) of 0.20mm, further be evaluated as good (◎) at 0.20mm following.With respect to this, above-mentioned maximum surpasses be evaluated as bad (*) of 0.50mm.Also have, good (zero's) and good (◎) is that qualified, bad (*) is defective.
(3) hardness of weld metal
The result of the test of foundation (1), current value is set at (current value of boundary feed speed-10A), measure 3 points of Vickers hardness (load 1kgf (1N)) of the weld metal section central portion of the lap joint that welds, with the intensity (HV) of its mean value as weld metal.
The evaluation of the hardness of weld metal, from the equal above general opinion of mother metal, Vickers hardness 160HV is above is evaluated as well (zero), Vickers hardness is lower than being evaluated as of 160HV bad (*).Also have, good (zero's) is that qualified, bad (*) is defective.
(4) anti-crackle
According to the result of the test of (1), X ray transmission test is all carried out in the welding of carrying out weld length 100mm with the current value and the boundary feed speed of boundary feed speed 10 times.Also have, in table 4～6, be expressed as in " crackle ".
Whole sound " nothings " (well (zero)) that is evaluated as of crackle according to the result of X ray transmission test, does not take place in the evaluation of anti-crackle, and what crack is evaluated as " having " (bad (*)).Also have, good (zero's) is that qualified, bad (*) is defective.
Also have, all the result that cracks of investigation as can be known, the generation form of crackle is the longitudinal crack of the cardinal principle central portion of weld width as shown in Figure 4.In addition, the result who observes its section as can be known, heat cracking is a solidification cracking.Also have, Fig. 4 is used for illustrating the figure of the evaluation of anti-crackle as the crackle of evaluation object.
(5) generating capacity that splashes
In pearl built-up welding (bead on plate), the voltage that the mode that makes arc length become 2mm with electric current 200A, by near the enlarging projection the electric arc is set welds, and captures splashing of taking place with catch, measures its weight.
The evaluation of the generating capacity that splashes, the generating capacity that splashes surpass 1.30g/min, are evaluated as good (zero), being evaluated as below 1.30g/min good (◎) below 1.50g/min.With respect to this, the generating capacity that splashes surpasses be evaluated as bad (*) of 1.50g/min.Also have, good (zero's) and good (◎) is that qualified, bad (*) is defective.
(6) feeding stability
In the pearl built-up welding, with the feed speed 6.00m/min of solid core welding wire, the voltage of the long 2mm of electric arc carries out welding in 1 hour, sensory evaluation stability.
The evaluation of feeding stability, feed speed be being evaluated as of not change good (◎) fully, though be considered to that some changes are no problem in practicality to be evaluated as good (zero).With respect to this, the change of feed speed is violent, the electric arc instability, and that can't stand to use be judged as bad (*).Also have, good (◎'s) and good (zero) is that qualified, bad (*) is defective.
(7) rate that is wrapped of slag
In the electrodeposition coating of after welding, implementing, to cause application to peel off this danger in order estimating to peel off, and to measure the area occupation ratio of the slag that produces in welded joints because of slag.
The be wrapped evaluation of rate of slag, the total area occupation ratio of slag are that average evaluation below 4.0% is good (◎) with respect to the ratio of the surface area of weld seam, surpass 4.0%, be well (zero) at the average evaluation 5.0% below.With respect to this, this ratio surpasses at 5.0% o'clock and is evaluated as bad (*).Also have, good (◎'s) and good (zero) is that qualified, bad (*) is defective.
(8) pendulum impact absorption energy
In order to estimate the impact property of weld part, promptly estimate the whether embrittlement of added metal of weld part easily, measure pendulum impact absorption energy according to JIS Z3312 " mild steel and high tension steel with active gases protection metal utmost point welding solid core welding wire ".Test temperature is 0 ℃, carries out 3 tests, for evaluation provides its mean value.
The pendulum impact absorption can evaluation, more than the 27J as the index of general use, be lower than good (zero) 47J of being evaluated as of 47J above be evaluated as good (◎).With respect to this, the pendulum impact absorption can be lower than 27J be judged as embrittlement metal, be evaluated as bad (*).Also have, good (zero's) and good (◎) is that qualified, bad (*) is defective.
The result of assessment item (1)～(8) is presented in table 4～6.
[table 4]
| No. | The degree of depth of undercut (mm) | The hardness of weld metal (HV) | Anti-crackle | Generating capacity (g/min) splashes | Feeding stability | The rate that is wrapped (%) of slag | Pendulum impact absorption energy (J) | Boundary feed speed (m/min) | Reference | |||||||
| 1 | 0.40 | ○ | 174 | ○ | Do not have | ○ | 1.08 | ◎ | ○ | 2.5 | ◎ | 75 | ◎ | 5.67 | ○ | Embodiment |
| 2 | 0.45 | ○ | 181 | ○ | Do not have | ○ | 1.16 | ◎ | ○ | 2.7 | ◎ | 80 | ◎ | 5.67 | ○ | ″ |
| 3 | 0.15 | ◎ | 172 | ○ | Do not have | ○ | 1.13 | ◎ | ○ | 3.0 | ◎ | 100 | ◎ | 6.58 | ◎ | ″ |
| 4 | 0.20 | ◎ | 179 | ○ | Do not have | ○ | 1.21 | ◎ | ○ | 3.2 | ◎ | 105 | ◎ | 6.58 | ◎ | ″ |
| 5 | 0.35 | ○ | 174 | ○ | Do not have | ○ | 0.95 | ◎ | ○ | 2.5 | ◎ | 76 | ◎ | 5.90 | ○ | ″ |
| 6 | 0.40 | ○ | 181 | ○ | Do not have | ○ | 1.04 | ◎ | ○ | 2.7 | ◎ | 81 | ◎ | 5.90 | ○ | ″ |
| 7 | 0.10 | ◎ | 172 | ○ | Do not have | ○ | 0.96 | ◎ | ○ | 3.0 | ◎ | 101 | ◎ | 6.81 | ◎ | ″ |
| 8 | 0.15 | ◎ | 172 | ○ | Do not have | ○ | 1.06 | ◎ | ○ | 3.2 | ◎ | 106 | ◎ | 6.81 | ◎ | ″ |
| 9 | 0.35 | ○ | 174 | ○ | Do not have | ○ | 1.03 | ◎ | ◎ | 2.5 | ◎ | 77 | ◎ | 5.90 | ○ | ″ |
| 10 | 0.40 | ○ | 181 | ○ | Do not have | ○ | 1.09 | ◎ | ◎ | 2.7 | ◎ | 82 | ◎ | 5.90 | ○ | ″ |
| 11 | 0.10 | ◎ | 1 72 | ○ | Do not have | ○ | 1.07 | ◎ | ◎ | 3.0 | ◎ | 102 | ◎ | 7.03 | ◎ | ″ |
| 12 | 0.15 | ◎ | 179 | ○ | Do not have | ○ | 1.16 | ◎ | ◎ | 3.2 | ◎ | 107 | ◎ | 7.03 | ◎ | ″ |
| 13 | 0.30 | ○ | 174 | ○ | Do not have | ○ | 0.91 | ◎ | ◎ | 2.5 | ◎ | 78 | ◎ | 6.12 | ○ | ″ |
| 14 | 0.35 | ○ | 181 | ○ | Do not have | ○ | 0.99 | ◎ | ◎ | 2.7 | ◎ | 83 | ◎ | 6.12 | ○ | ″ |
| 15 | 0.05 | ◎ | 172 | ○ | Do not have | ○ | 0.93 | ◎ | ◎ | 3.0 | ◎ | 103 | ◎ | 7.03 | ◎ | ″ |
| 16 | 0.10 | ◎ | 179 | ○ | Do not have | ○ | 1.02 | ◎ | ◎ | 3.2 | ◎ | 108 | ◎ | 7.03 | ◎ | ″ |
| 17 | 0.35 | ○ | 174 | ○ | Do not have | ○ | 1.01 | ◎ | ○ | 2.7 | ◎ | 73 | ◎ | 5.90 | ○ | ″ |
| 18 | 0.40 | ○ | 181 | ○ | Do not have | ○ | 1.06 | ◎ | ○ | 2.9 | ◎ | 78 | ◎ | 5.90 | ○ | ″ |
| 19 | 0.10 | ◎ | 172 | ○ | Do not have | ○ | 1.04 | ◎ | ○ | 3.2 | ◎ | 98 | ◎ | 7.03 | ◎ | ″ |
| 20 | 0.15 | ◎ | 179 | ○ | Do not have | ○ | 1.10 | ◎ | ○ | 3.4 | ◎ | 103 | ◎ | 7.03 | ◎ | ″ |
| 21 | 0.30 | ○ | 174 | ○ | Do not have | ○ | 0.85 | ◎ | ○ | 2.7 | ◎ | 74 | ◎ | 6.12 | ○ | ″ |
| 22 | 0.35 | ○ | 181 | ○ | Do not have | ○ | 0.94 | ◎ | ○ | 2.9 | ◎ | 79 | ◎ | 6.12 | ○ | ″ |
| 23 | 0.05 | ◎ | 1 72 | ○ | Do not have | ○ | 0.87 | ◎ | ○ | 3.2 | ◎ | 99 | ◎ | 7.26 | ◎ | ″ |
| 24 | 0.10 | ◎ | 172 | ○ | Do not have | ○ | 0.95 | ◎ | ○ | 3.4 | ◎ | 104 | ◎ | 7.26 | ◎ | ″ |
| 25 | 0.30 | ○ | 174 | ○ | Do not have | ○ | 0.92 | ◎ | ◎ | 2.7 | ◎ | 75 | ◎ | 6.12 | ○ | ″ |
| 26 | 0.35 | ○ | 181 | ○ | Do not have | ○ | 1.00 | ◎ | ◎ | 2.9 | ◎ | 80 | ◎ | 6.12 | ○ | ″ |
| 27 | 0.05 | ◎ | 172 | ○ | Do not have | ○ | 0.97 | ◎ | ◎ | 3.2 | ◎ | 100 | ◎ | 7.26 | ◎ | ″ |
| 28 | 0.10 | ◎ | 179 | ○ | Do not have | ○ | 1.05 | ◎ | ◎ | 3.4 | ◎ | 105 | ◎ | 7.26 | ◎ | ″ |
| 29 | 0.25 | ○ | 174 | ○ | Do not have | ○ | 0.80 | ◎ | ◎ | 2.7 | ◎ | 76 | ◎ | 6.35 | ○ | ″ |
| 30 | 0.30 | ○ | 181 | ○ | Do not have | ○ | 0.89 | ◎ | ◎ | 2.9 | ◎ | 81 | ◎ | 6.35 | ○ | ″ |
| 31 | 0 | ◎ | 172 | ○ | Do not have | ○ | 0.82 | ◎ | ◎ | 3.2 | ◎ | 101 | ◎ | 7.49 | ◎ | ″ |
[table 5]
| No. | The degree of depth of undercut (mm) | The hardness of weld metal (HV) | Anti-crackle | Generating capacity (g/min) splashes | Feeding stability | The rate that is wrapped (%) of slag | Pendulum impact absorption energy (J) | Boundary feed speed (m/min) | Reference | |||||||
| 32 | 0.05 | ◎ | 179 | ○ | Do not have | ○ | 0.91 | ◎ | ◎ | 3.4 | ◎ | 106 | ◎ | 7.49 | ◎ | Embodiment |
| 33 | 0.50 | ○ | 161 | ○ | Do not have | ○ | 0.99 | ◎ | ○ | 2.5 | ◎ | 56 | ◎ | 5.90 | ○ | ″ |
| 34 | 0.50 | ○ | 175 | ○ | Do not have | ○ | 1.45 | ○ | ○ | 4.2 | ○ | 60 | ◎ | 5.67 | ○ | ″ |
| 35 | 0.25 | ○ | 184 | ○ | Do not have | ○ | 1.42 | ○ | ◎ | 4.3 | ○ | 102 | ◎ | 7.26 | ◎ | ″ |
| 36 | 0.20 | ◎ | 196 | ○ | Do not have | ○ | 1.44 | ○ | ◎ | 4.7 | ○ | 40 | ○ | 7.49 | ◎ | ″ |
| 37 | 0.20 | ◎ | 208 | ○ | Do not have | ○ | 1.43 | ○ | ◎ | 4.2 | ○ | 80 | ◎ | 6.81 | ◎ | ″ |
| 38 | 0.50 | ○ | 179 | ○ | Do not have | ○ | 1.48 | ○ | ○ | 2.6 | ◎ | 95 | ◎ | 5.67 | ○ | ″ |
| 39 | 0.20 | ◎ | 190 | ○ | Do not have | ○ | 1.46 | ○ | ○ | 4.1 | ○ | 76 | ◎ | 6.81 | ◎ | ″ |
| 40 | 0.05 | ◎ | 175 | ○ | Do not have | ○ | 1.45 | ○ | ◎ | 4.4 | ○ | 42 | ○ | 7.49 | ◎ | ″ |
| 41 | 0.20 | ◎ | 173 | ○ | Do not have | ○ | 1.42 | ○ | ○ | 4.5 | ○ | 90 | ◎ | 6.58 | ◎ | ″ |
| 42 | 0.45 | ○ | 175 | ○ | Do not have | ○ | 1.45 | ○ | ○ | 3.4 | ◎ | 60 | ◎ | 5.67 | ○ | ″ |
| 43 | 0.20 | ◎ | 184 | ○ | Do not have | ○ | 1.30 | ◎ | ◎ | 3.6 | ◎ | 102 | ◎ | 7.26 | ◎ | ″ |
| 44 | 0.15 | ◎ | 1 96 | ○ | Do not have | ○ | 1.25 | ◎ | ◎ | 3.8 | ◎ | 40 | ○ | 7.49 | ◎ | ″ |
| 45 | 0.15 | ◎ | 208 | ○ | Do not have | ○ | 0.99 | ◎ | ◎ | 3.6 | ◎ | 80 | ◎ | 6.81 | ◎ | ″ |
| 46 | 0.50 | ○ | 179 | ○ | Do not have | ○ | 1.48 | ○ | ○ | 3.5 | ◎ | 95 | ◎ | 5.67 | ○ | ″ |
| 47 | 0.15 | ◎ | 190 | ○ | Do not have | ○ | 1.20 | ◎ | ○ | 3.5 | ◎ | 76 | ◎ | 6.81 | ◎ | ″ |
| 48 | 0 | ◎ | 175 | ○ | Do not have | ○ | 1.06 | ◎ | ◎ | 3.5 | ◎ | 42 | ○ | 7.49 | ◎ | ″ |
| 49 | 0.15 | ◎ | 173 | ○ | Do not have | ○ | 1.11 | ◎ | ○ | 3.6 | ◎ | 90 | ◎ | 6.58 | ◎ | ″ |
| 50 | 0.20 | ◎ | 175 | ○ | Do not have | ○ | 1.28 | ◎ | ○ | 3.9 | ◎ | 103 | ◎ | 6.58 | ◎ | ″ |
| 51 | 0.20 | ◎ | 180 | ○ | Do not have | ○ | 0.91 | ◎ | ○ | 3.3 | ◎ | 100 | ◎ | 6.58 | ◎ | ″ |
| 52 | 0.20 | ◎ | 180 | ○ | Do not have | ○ | 0.85 | ◎ | ◎ | 3.3 | ◎ | 99 | ◎ | 6.81 | ◎ | ″ |
| 53 | 0.40 | ○ | 170 | ○ | Do not have | ○ | 1.43 | ○ | ○ | 2.3 | ◎ | 75 | ◎ | 5.90 | ○ | ″ |
| 54 | 0.35 | ○ | 174 | ○ | Do not have | ○ | 1.44 | ○ | ○ | 2.6 | ◎ | 65 | ◎ | 5.67 | ○ | ″ |
| 55 | 0.35 | ○ | 176 | ○ | Do not have | ○ | 1.50 | ○ | ○ | 3.8 | ◎ | 80 | ◎ | 5.90 | ○ | ″ |
| 56 | 0.45 | ○ | 179 | ○ | Do not have | ○ | 1.42 | ○ | ○ | 3.4 | ◎ | 92 | ◎ | 5.67 | ○ | ″ |
| 57 | 0.10 | ◎ | 140 | × | Do not have | ○ | 0.84 | ◎ | ◎ | 2.5 | ◎ | 90 | ◎ | 6.81 | ◎ | Comparative example |
| 58 | 0.55 | × | 195 | ○ | Have | × | 1.64 | × | ◎ | 2.4 | ◎ | 94 | ◎ | 5.22 | × | ″ |
| 59 | 0.55 | × | 155 | × | Do not have | ○ | 0.85 | ◎ | ◎ | 2.3 | ◎ | 56 | ◎ | 5.22 | × | ″ |
| 60 | 0.55 | × | 185 | ○ | Do not have | ○ | 1.10 | ◎ | ◎ | 2.7 | ◎ | 23 | × | 5.22 | × | ″ |
| 61 | 0.55 | × | 154 | × | Do not have | ○ | 0.94 | ◎ | ◎ | 2.0 | ◎ | 21 | × | 5.22 | × | ″ |
| 62 | 0.60 | × | 151 | × | Do not have | ○ | 1.02 | ◎ | ○ | 2.0 | ◎ | 25 | × | 4.99 | × | ″ |
[table 6]
| No. | The degree of depth of undercut (mm) | The hardness of weld metal (HV) | Anti-crackle | Generating capacity (g/min) splashes | Feeding stability | The rate that is wrapped (%) of slag | Pendulum impact absorption energy (J) | Boundary feed speed (m/min) | Reference | ||||||
| 63 | 0.55 | × | 182 | ○ | Do not have | 0.90 | ◎ | ◎ | 5.2 | × | 106 | ◎ | 5.22 | × | Comparative example |
| 64 | 0.60 | × | 183 | ○ | Have | 1.26 | ◎ | ○ | 5.9 | × | 20 | × | 4.99 | × | ″ |
| 65 | 0.10 | ◎ | 175 | ○ | Have | 1.00 | ◎ | ◎ | 2.5 | ◎ | 78 | ◎ | 6.81 | ◎ | ″ |
| 66 | 0.55 | × | 173 | ○ | Have | 1.25 | ◎ | ○ | 3.1 | ◎ | 120 | ◎ | 5.22 | × | ″ |
| 67 | 0.55 | × | 175 | ○ | Do not have | 0.84 | ◎ | ◎ | 3.1 | ◎ | 123 | ◎ | 5.22 | × | ″ |
| 68 | 0.60 | × | 176 | ○ | Have | 1.60 | × | ◎ | 1.9 | ◎ | 19 | × | 7.26 | ◎ | ″ |
| 69 | 0.55 | × | 200 | ○ | Have | 1.80 | × | ○ | 3.3 | ◎ | 8 | × | 4.76 | × | ″ |
| 70 | 0.40 | ○ | 180 | ○ | Have | 1.14 | ◎ | ◎ | 2.7 | ◎ | 35 | ○ | 7.03 | ◎ | ″ |
| 71 | 0.35 | ○ | 179 | ○ | Have | 1.24 | ◎ | ○ | 3.5 | ◎ | 29 | ○ | 6.81 | ◎ | ″ |
| 72 | 0.20 | ◎ | 206 | ○ | Have | 1.20 | ◎ | ◎ | 3.5 | ◎ | 50 | ◎ | 6.58 | ◎ | ″ |
| 73 | 0.45 | ○ | 195 | ○ | Have | 1.22 | ◎ | ○ | 3.0 | ◎ | 31 | ○ | 6.35 | ○ | ″ |
| 74 | 0.55 | × | 179 | ○ | Do not have | 1.54 | × | ◎ | 5.1 | × | 70 | ◎ | 5.22 | × | ″ |
| 75 | 0.55 | × | 179 | ○ | Do not have | 1.53 | × | ◎ | 2.8 | ◎ | 106 | ◎ | 5.22 | × | ″ |
| 76 | 0.55 | × | 176 | ○ | Do not have | 1.60 | × | ◎ | 5.1 | × | 54 | ◎ | 5.22 | × | ″ |
| 77 | 0.55 | × | 178 | ○ | Do not have | 1.52 | × | ◎ | 5.2 | × | 100 | ◎ | 5.22 | × | ″ |
| 78 | 0.55 | × | 182 | ○ | Do not have | 1.58 | × | ◎ | 5.2 | × | 56 | ◎ | 5.22 | × | ″ |
| 79 | 0.55 | × | 182 | ○ | Do not have | 1.60 | × | ◎ | 5.1 | × | 56 | ◎ | 5.22 | × | ″ |
| 80 | 0.55 | × | 176 | ○ | Do not have | 1.58 | × | ◎ | 5.2 | × | 90 | ◎ | 5.22 | × | ″ |
| 81 | 0.55 | × | 175 | ○ | Do not have | 1.53 | × | ◎ | 5.2 | × | 76 | ◎ | 5.22 | × | ″ |
| 82 | 0.55 | × | 175 | ○ | Do not have | 1.53 | × | ◎ | 5.2 | × | 74 | ◎ | 5.22 | × | ″ |
| 83 | 0.50 | ○ | 180 | ○ | Have | 1.01 | ◎ | ◎ | 2.8 | ◎ | 98 | ◎ | 6.81 | ◎ | ″ |
| 84 | 0.45 | ○ | 185 | ○ | Do not have | 1.29 | ◎ | ◎ | 3.3 | ◎ | 18 | × | 6.81 | ◎ | ″ |
| 85 | 0.55 | × | 174 | ○ | Do not have | 0.85 | ◎ | ◎ | 2.2 | ◎ | 90 | ◎ | 5.22 | × | ″ |
| 86 | 0.60 | × | 168 | ○ | Have | 1.80 | × | ◎ | 5.5 | × | 25 | × | 7.03 | ◎ | ″ |
| 87 | 0.55 | × | 220 | ○ | Do not have | 1.55 | × | ◎ | 3.1 | ◎ | 55 | ◎ | 5.22 | × | ″ |
| 88 | 0.45 | ○ | 174 | ○ | Do not have | 1.13 | ◎ | ○ | 2.5 | ◎ | 78 | ◎ | 5.85 | ○ | Embodiment |
| 89 | 0.45 | ○ | 174 | ○ | Do not have | 1.40 | ○ | ○ | 2.5 | ◎ | 80 | ◎ | 5.85 | ○ | ″ |
| 90 | 0.45 | ○ | 174 | ○ | Do not have | 1.03 | ◎ | ○ | 2.7 | ◎ | 78 | ◎ | 5.85 | ○ | ″ |
| 91 | 0.50 | ○ | 182 | ○ | Do not have | 1.45 | ○ | ○ | 3.0 | ◎ | 96 | ◎ | 5.65 | ○ | ″ |
| 92 | 0.60 | × | 157 | × | Have | 1.46 | ○ | ○ | 4.8 | ○ | 104 | ◎ | 4.76 | × | Comparative example |
| 93 | 0.70 | × | 235 | ○ | Have | 2.89 | × | ○ | 10.5 | × | 156 | ◎ | 4.54 | × | ″ |
Necessary condition of the present invention is satisfied because the one-tenth of solid core welding wire is grouped in No.1～56,88～91, therefore in the rate that is wrapped of the feeding stability of boundary feed speed (anti-burning property), anti-undercut, the hardness of weld metal, the generating capacity that splashes, solid core welding wire, slag, pendulum impact absorption can whole assessment items of (impact property), can obtain good evaluation result (embodiment is with reference to table 4,5,6 remarks column).
Good evaluation result (comparative example is with reference to table 5,6 remarks column) because the one-tenth of solid core welding wire is grouped into the necessary condition of discontented unabridged version invention, therefore all can not be obtained in No.57～87,92,93 on the other hand in any of each above-mentioned assessment item.Concrete reason is as follows.
No.57 is because the content of C is very few, so the hardness deficiency of weld metal.It is the undercapacity of weld part and can not using with versatility.
No.58 is because of the content surplus of C, so the deoxidation surplus, the boundary feed speed is little, and in addition, the undercut degree of depth is dark.That is, anti-burning property, anti-undercut are bad.The generating capacity that splashes in addition is also many, because there is solidification cracking to take place, the anti-crackle of institute is also bad.
No.59 is because the content of Si is very few, so the hardness deficiency of weld metal.It is the undercapacity of weld part and can not using with versatility.In addition, because the electrical impedance of solid core welding wire is low, so near the current value the amount of feeding uprises.Therefore, because heat energy and arc force become big, so burn and undercut also takes place easily, anti-burning property, anti-undercut are bad.
No.60 is because the content surplus of Si, so the deoxidation surplus, anti-burning property, anti-undercut are bad.In addition, the pendulum impact absorption can be also bad, is confirmed to be the embrittlement of weld metal.
No.61,62 is because the content of Mn is very few, so the hardness deficiency of weld metal.It is the undercapacity of weld portion and can not using with versatility.In addition, because the electrical impedance of solid core welding wire is low, so near the current value the amount of feeding uprises.Therefore, because heat energy and arc force become big, so burn and undercut also takes place easily, anti-burning property, anti-undercut are bad.In addition, the pendulum impact absorption can be also bad, is confirmed to be the embrittlement of weld metal.
No.63 is because the content surplus of Mn, so the deoxidation surplus, anti-burning property, anti-undercut are bad.In addition because the generating capacity of slag is also many, so the rate that the is wrapped height of slag.This means the coating variation.
The total content of the content of its Mn of No.64, C and S, the content surplus of N.Because the content surplus of Mn, so the deoxidation surplus, anti-burning property, anti-undercut are bad.Because the generating capacity of slag is also many, so the rate that the is wrapped height of slag.Though C and S content separately satisfies necessary condition of the present invention, the total content of C and S surpasses higher limit, therefore produces solidification cracking.Be that anti-crackle is bad.In addition, because the N surplus so the pendulum impact absorption can be also bad, is confirmed to be the embrittlement of weld metal.
No.65 is because of the content surplus of P, so solidification cracking produces.Be that anti-crackle is bad.
No.66 is because of the content surplus of P, so solidification cracking produces.Be that anti-crackle is bad.In addition, because the content of S is very few, so the viscosity in molten bath and surface tension are not reduced to proper range, thus the barrier effect that can not get making the arc force of the electric arc of going ahead of the rest to relax to some extent with respect to the molten bath.Therefore, anti-burning property, anti-undercut are bad.
No.67 is because the content of S is very few, so the viscosity in molten bath and surface tension are not reduced to proper range.Therefore, can't obtain to relax barrier effect, and become anti-burning property, the bad result of anti-undercut from the arc force in molten bath.
No.68 is because S has the total content surplus of content and C and S, so solidification cracking produces.Be that anti-crackle is bad.In addition, because the viscosity and the surface tension of molten drop are very few, the easy short circuit in molten drop and molten bath is so the generating capacity that splashes is very many.The pendulum impact absorption can be also bad, is confirmed to be the embrittlement of weld metal.Though anti-burning property is good, the molten bath is sagging easily under the gravity effect, and the undercut of upper plate side takes place easily, becomes the bad result of anti-undercut.
The total content of content, C and the S of the content of its C of No.69, the content of Si, S is all superfluous.Solidification cracking takes place, and anti-crackle is bad.In addition, anti-burning property, anti-undercut are also poor, and the generating capacity that splashes is also many.In addition, the pendulum impact absorption can be also bad, is confirmed to be the embrittlement of weld metal.
Though No.70,71,72 C and S satisfy necessary condition of the present invention respectively, because the total content of C and S exceeds set upper limit value of the present invention, so produce solidification cracking.Therefore, anti-crackle is bad.
Though No.73 C and S satisfy necessary condition of the present invention respectively, because the total content of C and S exceeds set upper limit value of the present invention, and the total content of O and N also exceeds set upper limit value of the present invention, so produce solidification cracking.Therefore, anti-crackle is bad.
No.74 is because of the content surplus of Cr, so the viscosity in molten bath and surface tension surplus, anti-burning property and anti-undercut are bad.In addition, because slag takes place in a large number, so the rate that the is wrapped height of slag.The generating capacity that splashes is also many.
No.75 is because of the content surplus of Ni, so the viscosity in molten bath and surface tension surplus, anti-burning property and anti-undercut are bad.In addition, the generating capacity that splashes is also many.
No.76,77,78,79,80,81,82 is respectively the content surplus of Al, Ti, Nb, V, Zr, La, Ce, and therefore the viscosity in molten bath and surface tension surplus become anti-burning property and the bad result of anti-undercut.In addition, slag takes place in a large number, the rate that the is wrapped height of slag.The generating capacity that splashes in addition is also many.
No.83 is because the content surplus of B so solidification cracking takes place, becomes the bad result of anti-crackle.
No.84 is because of the content surplus of N, so though gas hole defect does not produce the added metal embrittlement.
No.85 is because the content surplus of O, so the viscosity in molten bath and surface tension are not reduced to proper range, thereby can not get relaxing barrier effect from the arc force in molten bath.Therefore, anti-burning property, anti-undercut are bad.
No.86 is because the content surplus of O, the total content surplus of O and N in addition, so that field trash becomes is many, crackle produces.Be that anti-crackle is bad.In addition, because the viscosity of molten drop and surface tension are very few, the easy short circuit in molten drop and molten bath is so the generating capacity that splashes is very many.The pendulum impact absorption can be also bad, is confirmed to be the embrittlement of weld metal.Also have, though anti-burning property is good, the molten bath is sagging easily under the gravity effect, and the undercut of upper plate side takes place easily.Be that anti-undercut is bad.Slag is many in addition, and the rate that is wrapped of slag is also high.Hinted that promptly coating is poor.
No.87 is because of the content surplus of Mo, so the viscosity in molten bath and surface tension surplus become anti-burning property and the bad result of anti-undercut.The generating capacity that splashes in addition is also many.
No.92 is solid core welding wire a kind of of market circulation, but that the content of the content of Si and S is compared with necessary condition of the present invention is very few, and the content of P is compared surplus with necessary condition of the present invention.Because Si contains quantity not sufficient, so become the bad result of the hardness of weld metal.Therefore, the undercapacity of weld part, hint can not be used with versatility.In addition, because the electrical impedance of solid core welding wire is low, so near the current value the amount of feeding uprises, it is big that heat energy and arc force become.In addition,,, thereby can not get relaxing barrier effect from the arc force in molten bath so the viscosity in molten bath and surface tension are not reduced to proper range because the content of S is very few, both in conjunction with and burn and undercut easily.Promptly become anti-burning property, the bad result of anti-undercut.In addition, because the content surplus of P so crackle also takes place, becomes the also bad result of anti-crackle.
No.93 also is solid core welding wire a kind of of market circulation, but compares with necessary condition of the present invention, and the content of C, Mn, B, Mo is all superfluous, and the content of S is compared very few with necessary condition of the present invention.Because the content surplus of the content of C and B, so there is crackle that (anti-crackle is low) takes place in the penetration welding.In addition, because the content surplus of C, Mn, Mo, the content of S is very few, so the viscosity in molten bath and surface tension significantly uprise, becomes anti-burning property, the bad result of anti-undercut.In addition, the generating capacity that splashes is also many.In addition, because the content height of Mn, so the rate that the is wrapped height of slag takes place in slag in a large number.Hinting that promptly coating is poor.
Claims (6)
1. a solid core welding wire that is used to carry out arc welding is characterized in that,
Contain: C is that 0.005～0.060 quality %, Si are that 0.60～1.00 quality %, Mn are that 1.10～1.65 quality %, S are that 0.045～0.090 quality %, O are 0.0015～0.0100 quality %, and, adding up to below the 0.125 quality % of the content of described C and described S, P is below 0.017 quality %, surplus is Fe and impurity
In described impurity, Ti is limited in below the 0.15 quality %, B is limited in below the 0.0050 quality %, N is limited in below the 0.0075 quality %, in addition, respectively Cr, Ni, Al, Nb, V, Zr, La and Ce are limited in below the 0.20 quality %.
2. solid core welding wire according to claim 1 is characterized in that, the total content of described O and described N is limited in below the 0.0110 quality %.
3. solid core welding wire according to claim 1 is characterized in that, contains the following Mo of 0.30 quality %.
4. solid core welding wire according to claim 1 is characterized in that, on described solid core welding wire surface, has K, the Li, Na and the Ca that add up to 0.5～30ppm with respect to described solid core welding wire integral body.
5. solid core welding wire according to claim 1 is characterized in that, on described solid core welding wire surface, the described solid core welding wire of every 10kg contains the MoS of 0.01～1.00g
2
6. according to each described solid core welding wire in the claim 1～5, it is characterized in that, by copper facing lining surface.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006190236A JP5001595B2 (en) | 2006-07-11 | 2006-07-11 | Solid wire |
| JP2006190236 | 2006-07-11 |
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| Publication Number | Publication Date |
|---|---|
| CN101104230A true CN101104230A (en) | 2008-01-16 |
| CN100509260C CN100509260C (en) | 2009-07-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2007101034908A Active CN100509260C (en) | 2006-07-11 | 2007-05-18 | Solid core soldering wire |
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| JP (1) | JP5001595B2 (en) |
| KR (1) | KR100896374B1 (en) |
| CN (1) | CN100509260C (en) |
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| JP3551140B2 (en) * | 2000-09-25 | 2004-08-04 | Ｊｆｅスチール株式会社 | Gas shielded arc welding wire |
| JP3872411B2 (en) * | 2002-10-23 | 2007-01-24 | 株式会社神戸製鋼所 | Solid wire for arc welding without copper plating |
| JP4628027B2 (en) * | 2004-07-12 | 2011-02-09 | 株式会社神戸製鋼所 | Solid wire for gas shielded arc welding |
| KR100726043B1 (en) * | 2004-09-22 | 2007-06-08 | 가부시키가이샤 고베 세이코쇼 | Solid wire for gas-shielded arc welding |
| JP4768310B2 (en) | 2005-04-28 | 2011-09-07 | 株式会社神戸製鋼所 | Solid wire for gas shielded arc welding |
| TWI295603B (en) * | 2005-06-15 | 2008-04-11 | Kobe Steel Ltd | Solid wires for gas-shielded arc welding |
-
2006
- 2006-07-11 JP JP2006190236A patent/JP5001595B2/en active Active
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2007
- 2007-05-18 CN CNB2007101034908A patent/CN100509260C/en active Active
- 2007-06-05 TW TW096120183A patent/TWI316885B/en active
- 2007-07-10 KR KR1020070069076A patent/KR100896374B1/en active IP Right Grant
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| CN101716706B (en) * | 2009-08-06 | 2011-01-26 | 江苏立新合金实业总公司 | High-strength alloy solid cored welding wire |
| CN102248324A (en) * | 2011-06-27 | 2011-11-23 | 武汉钢铁(集团)公司 | CO2 gas shield welding wire capable of reducing welding spatter |
| CN102773629A (en) * | 2012-07-09 | 2012-11-14 | 武汉钢铁(集团)公司 | CO2 gas shielded welding wire with excellent welding performance |
| CN102773629B (en) * | 2012-07-09 | 2015-06-17 | 武汉钢铁(集团)公司 | CO2 gas shielded welding wire with excellent welding performance |
| CN104551440A (en) * | 2014-11-19 | 2015-04-29 | 钢铁研究总院 | High-intensity and high-toughness non-preheating welding rod |
| CN110961827A (en) * | 2019-12-10 | 2020-04-07 | 上海海事大学 | High-strength high-toughness abrasion-resistant submerged arc welding wire for polar ice sea low-temperature environment |
| CN114932338A (en) * | 2022-05-07 | 2022-08-23 | 本钢板材股份有限公司 | Wire rod for high-titanium gas shielded welding wire and production process thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| TW200806415A (en) | 2008-02-01 |
| TWI316885B (en) | 2009-11-11 |
| CN100509260C (en) | 2009-07-08 |
| KR100896374B1 (en) | 2009-05-08 |
| JP2008018435A (en) | 2008-01-31 |
| JP5001595B2 (en) | 2012-08-15 |
| KR20080006471A (en) | 2008-01-16 |
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