CN101633083B - Coating welding wire for carbon dioxide arc welding and preparation method thereof - Google Patents
Coating welding wire for carbon dioxide arc welding and preparation method thereof Download PDFInfo
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- CN101633083B CN101633083B CN2009100699994A CN200910069999A CN101633083B CN 101633083 B CN101633083 B CN 101633083B CN 2009100699994 A CN2009100699994 A CN 2009100699994A CN 200910069999 A CN200910069999 A CN 200910069999A CN 101633083 B CN101633083 B CN 101633083B
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Abstract
The invention discloses a coating welding wire for a carbon dioxide arc welding and a preparation method thereof; the welding wire comprises a metal wire, the surface of which is provided with nicks; by a mechanical coating pressing method, active agent powder is coated on the surface of the metal wire. As the surface plating layer of the prepared welding wire is coated with active agent coating, the welding wire can reduce splash and increases the welding quality in the premise of ensuring the electrical conductivity; in the preparation method, the mechanical alloying (coating pressing) method is adopted and can avoid the pollution brought about by the traditional coppering technique.
Description
Technical field
The present invention relates to a kind of welding wire that is used for carbon dioxide gas arc welding and preparation method thereof, more particularly, relating to a kind of welding wire surface does not have copper-plated welding wire and preparation method thereof.
Background technology
Along with the introducing of robot welding system, the welding wire that is used for CO 2 gas-shielded arc-welding has been widely used in a lot of fields, for example steel construction, automobile, boats and ships and building.For the welding wire that is used for CO 2 gas-shielded arc-welding, use so-called copper facing solid welding wire usually, wherein copper is plated in welding wire surface.There is following problem in copper plating soldering wire in using and preparing:
(1) copper plate is softer than welding wire surface, because the friction between welding wire and the tip, copper facing is peeled off from welding wire surface inevitably, thereby makes welding unstable.In welding process, because the friction between welding wire and the tip, copper powder comes off and accumulates at tip from welding wire surface, can cause tip to stop up, thereby cause welding unstable, produces a large amount of splashing.
(2) fusing point of copper is low, evaporation easily under the superhigh temperature of welding process, thus produce a large amount of copper cigarettes.
(3) welding wire surface copper facing meeting produces a large amount of waste liquids, causes the pollution of environment.
Although copper plating soldering wire has above-mentioned shortcoming, welding wire surface copper facing can improve electric conductivity, welding wire feeding property and corrosion resistance.Consider above-mentioned shortcoming, need exploitation can satisfy the non-coppering wire with copper plating soldering wire advantages characteristic of various characteristics.Japanese communique 2682814 (arc welding welding wire), day flat 11-147174 (steel are used the electroless coating welding wire) of disclosure special permission communique has proposed to use at least a lubricated powder at welding wire surface, like MoS
2, WS
2And C, perhaps lubricating oil coating is used to improve the feeding property of welding wire.Day disclosure special permission communique 2000-117483 discloses a kind of welding wire, along the circumferential direction has the wavy coarse part of predetermined wavelength at welding wire surface, because the peak strength in the spectral measurement is controlled at required numerical value, its arc starting performance is excellent.Day disclosure special permission communique 2000-317679 discloses a kind of electroless coating welding wire and arc welding method of arc welding; Wherein use water miscible polymer substance insulation inorganic material powders that the granularity of predetermined quantity is less and conduction inorganic material powders to be bonded in welding wire surface, thus the quantity that has reduced cigarette or splashed.Chinese patent " a kind of surface scribbles the CO 2 gas-shielded solid core welding wire of graphite paint " (application number 200510012638.8; Open day on December 21st, 2005) disclose and a kind of welding wire has been carried out the coating or the spray treatment of graphite-based coating, to improve weldquality.Chinese patent " a kind of welding wire that is used for gas shielded arc welding " (application number 200320129174.5; December 29 2004 Granted publication day) disclose and a kind ofly be provided with longitudinal groove or pitting in wire surface; Activator is arranged in longitudinal groove or the pitting; At this moment, activator anisotropically is distributed in surface wiry, causes the decline of the instability and the welding quality of welding process.
Above-mentioned welding wire has been improved to non-coppering wire, but does not satisfy all required characteristics of welding wire.Particularly, for the performance that improves non-coppering wire applies under the situation of fine powder at welding wire surface, the powder that is coated in welding wire surface causes the generation of cigarette inevitably.And owing to be difficult to the powder that applies is controlled at proper level, the powder that is coated in welding wire surface is inhomogeneous, thereby has increased the quantity of splashing.
Summary of the invention
The present invention is intended to overcome the deficiency of existing copper plating soldering wire; Under the prerequisite that guarantees conductance; Provide a kind of can reducing to splash, improve welding stability and welding quality, avoid coating welding wire of a large amount of carbon dioxide gas arc weldings that pollute and preparation method thereof simultaneously.
A kind of coating welding wire that is used for carbon dioxide gas arc welding of the present invention comprises welding wire and activating agent overlay, carries out the indentation processing on the welding wire raw material wire rod surface of peeling off after being coated with boron; Then the wire rod behind the indentation is carried out drawing; In drawing process, wire rod is through being equipped with the diaphragm capsule of activating agent and wire drawing die, and wherein said activating agent is painted on the surface of wire rod earlier; Be coated with by wire drawing die again and be pressed in the wire rod surface, form continuous activator coating.
The thickness of said activating agent overlay is 0.0001-0.1mm.
Said indentation is indentation radially or oblique indentation.
The angle of said oblique indentation and welding wire axis is the 30-90 degree.
Said activating agent is made up of the Al-Mg alloy powder of 20-65%, the ti powder of 8-45% or the wire drawing lubricant of titanium dioxide powder and 10-30% according to mass percent.
Said activating agent according to mass percent by the cerium powder of the ti powder of the Al-Mg alloy powder of 20-65%, 8-45% or titanium dioxide powder, 0-20% or ceria oxide powder, the lithium carbonate powder of 0-30%, telloy or tellurium oxide powder, the selenium powder end of 0-20% or the wire drawing lubricant of selenium oxide powder and 10-30% of 0-20%.
The granularity of said powder is less than 300 orders.
A kind of preparation of the present invention is used for the method for the coating welding wire of carbon dioxide gas arc welding, carries out according to following step: welding wire raw material wire rod is peeled off is coated with boron earlier, carries out indentation on its surface and handles; Then the raw material wire rod behind the indentation is carried out drawing; In drawing process, the raw material wire rod that has indentation is through being provided with the diaphragm capsule of activating agent and wire drawing die, and wherein said activating agent is painted on the surface of wire rod earlier; Be coated with by wire drawing die machinery again and be pressed in the wire rod surface, form continuous activator coating.
The thickness of said activating agent overlay on the welding wire top layer is 0.0001-0.1mm.
Said indentation is indentation radially or oblique indentation.
The angle of said oblique indentation and welding wire axis is the 30-90 degree.
Said activating agent is made up of the Al-Mg alloy powder of 20-65%, the ti powder of 8-45% or the wire drawing lubricant of titanium dioxide powder and 10-30% according to mass percent.
Said activating agent according to mass percent by the cerium powder of the ti powder of the Al-Mg alloy powder of 20-65%, 8-45% or titanium dioxide powder, 0-20% or ceria oxide powder, the lithium carbonate powder of 0-30%, telloy or tellurium oxide powder, the selenium powder end of 0-20% or the wire drawing lubricant of selenium oxide powder and 10-30% of 0-20%.
The granularity of said powder is less than 300 orders.
Welding wire of the present invention utilizes wire drawing die that activating agent mixed-powder machinery is coated with and is pressed in the raw material wire rod surface that has line of weakness, forms continuous active agent coating.The wire drawing die that the present invention utilizes is commonly used in drawing welding wire technology, is processed by diamond, carbide alloy or glomerocryst material usually, by approach cone, active section, sizing section with go out prostomum and form.As shown in Figure 1, in the preparation process of welding wire, wire drawing die and activating agent are arranged among the diaphragm capsule (not showing among Fig. 1) simultaneously; When carrying out drawing, the raw material wire rod surface that has indentation at first is stained with the activating agent powder, and the approach cone from wire drawing die gets into wire drawing die then; Pass through active section and sizing section successively; Pull out by going out prostomum at last, the activating agent powder was coated with through machinery and was pressed on the wire rod surface this moment, formed continuous coating.Production process of the present invention need not to clean and copper facing, compares with traditional copper-plating technique, and one ton of welding wire of every production can reduce and contains acid and contain 10 tons of the sewage discharges that alkali contains heavy metal ion, reduces acid mist, the alkali mist discharges several kilosteres.
Bioactive agent composition of the present invention adopts powder to be coated with pressure, selects for use granularity better less than 300 purpose powder.Al-mg alloy powder wherein can adopt industrial Al-Mg alloy powder, and wherein the mass ratio of magnalium was generally 1: 1.Al-mg alloy powder, ti powder or titanium dioxide powder can improve welding wire rustless property and welding wire conductive capability, in welding, guarantee the stable of deoxidation and electric arc, reduce to splash, and crystal grain thinning improves welding performance simultaneously; The interpolation of lithium carbonate can further improve the stability of electric arc; The interpolation of elemental selenium, cerium and tellurium can the refinement molten drop, and minimizing is splashed, and increases fusion penetration, can select the powder type of its powder or oxide to get into; The interpolation of wire drawing lubricant not only can guarantee the stability of drawing process; Reduce wire broken rate; Improve the rustless property of welding wire simultaneously, can select wire drawing powder (like calcium Ji Lasi powder, sodium Ji Lasi powder, barium Ji Lasi powder) commonly used in the drawing welding wire technology or wire drawing oil (like mineral oil based wire drawing oil, plant oil based wire drawing oil) for use.
Can adopt once among the preparation method of the present invention, secondary or indentation and through the drawing of wire drawing die, to reach gage of wire and the coating layer thickness that needs more frequently.
Description of drawings
Fig. 1 is that welding wire surface machinery is coated with the pressure sketch map.
1. wire drawing die; 2. the welding wire that has indentation; 3. activating agent; 4. after being coated with pressure through machinery, have the welding wire of active agent coating.
Fig. 2 is the structural representation of coating welding wire of the present invention.
5. wire; 6. active agent coating.
The specific embodiment
Further specify technical scheme of the present invention below in conjunction with specific embodiment.
Embodiment 1
(1) with the H08A welding wire raw material wire rod of diameter 5.5mm, peeling off is coated with boron, carves oblique indentation on its surface, and the angle of said oblique indentation and welding wire axis is 80 degree;
(2) al-mg alloy powder 25g, titanium dioxide powder 45g, calcium Ji Lasi powder 30g are mixed, be loaded in the diaphragm capsule;
(3) the raw material wire rod is drawn to diameter 2.2mm finished product welding wire, the thickness of activating agent overlay is 0.0008mm.
(1) with the ER50-6 welding wire raw material wire rod of diameter 5.5mm, peeling off is coated with boron, carves oblique indentation on its surface, and the angle of said oblique indentation and welding wire axis is 70 degree;
(2) with al-mg alloy powder 65g, ti powder 25g, sodium Ji Lasi powder 10g mixes, and is loaded in the diaphragm capsule;
(3) the raw material wire rod is drawn to diameter 2.0mm finished product welding wire, the thickness of activating agent overlay is 0.0001mm.
Embodiment 3
(1) with the ER50-6 welding wire raw material wire rod of diameter 5.5mm, peeling off is coated with boron, carves radially indentation on its surface;
(2) with al-mg alloy powder 62g, ti powder 8g, plant oil based wire drawing oil 30g mixes, and is loaded in the diaphragm capsule;
(3) the raw material wire rod is drawn to diameter 2.0mm finished product welding wire, the thickness of activating agent overlay is 0.001mm.
Embodiment 4
(1) with the H08A welding wire raw material wire rod of diameter 5.5mm, peeling off is coated with boron, carves oblique indentation on its surface, and the angle of said oblique indentation and welding wire axis is 30 degree;
(2) al-mg alloy powder 55g, titanium dioxide powder 25g, barium Ji Lasi powder 20g are mixed, be loaded in the diaphragm capsule;
(3) the raw material wire rod is drawn to diameter 2.2mm finished product welding wire, the thickness of activating agent overlay is 0.008mm.
Embodiment 5
(1) with the H08A welding wire raw material wire rod of diameter 5.5mm, peeling off is coated with boron, carves oblique indentation on its surface, and the angle of said oblique indentation and welding wire axis is 90 degree;
(2) al-mg alloy powder 35g, titanium dioxide powder 35g, selenium oxide powder 10g and sodium Ji Lasi powder 20g are mixed, be loaded in the diaphragm capsule;
(3) the raw material wire rod is carried out being drawn to the first time diameter 2.3mm;
(4) carve radially indentation on the surface of the raw material wire rod of diameter 2.3mm;
(5) al-mg alloy powder 50g, titanium dioxide powder 10g, lithium carbonate powder 10g, selenium oxide powder 10g, tellurium oxide powder 10g, sodium Ji Lasi powder 10g are mixed, be loaded in the diaphragm capsule;
(6) carry out being drawn to the second time diameter 1.2mm finished product welding wire, the thickness of activating agent overlay is 0.1mm.
(1) with the H08A welding wire raw material wire rod of diameter 5.5mm, peeling off is coated with boron, carves radially indentation on its surface;
(2) al-mg alloy powder 40g, titanium dioxide powder 10g, cerium powder 10g, lithium carbonate powder 10g, selenium powder end 10g, telloy 10g, sodium Ji Lasi powder 10g are mixed, be loaded in the diaphragm capsule;
(3) the raw material wire rod is drawn to diameter 2.5mm, finished product welding wire, the thickness of activating agent overlay are 0.002mm.
Embodiment 7
(1) with the H08A welding wire raw material wire rod of diameter 5.5mm, peeling off is coated with boron, carves oblique indentation on its surface, and the angle of said oblique indentation and welding wire axis is 50 degree;
(2) al-mg alloy powder 40g, titanium dioxide powder 10g, ceria oxide powder 10g, lithium carbonate powder 10g, selenium oxide powder 10g, tellurium oxide powder 10g, calcium Ji Lasi powder 10g are mixed, be loaded in the diaphragm capsule;
(3) the raw material wire rod is drawn to diameter 2.5mm, finished product welding wire, the thickness of activating agent overlay are 0.008mm.
Embodiment 8
(1) with the ER50-6 welding wire raw material wire rod of diameter 5.5mm, peeling off is coated with boron, carves oblique indentation on its surface, and the angle of said oblique indentation and welding wire axis is 60 degree;
(2) al-mg alloy powder 40g, titanium dioxide powder 10g, selenium powder end 10g, lithium carbonate powder 10g, cerium powder 10g, telloy 10g, barium Ji Lasi powder 10g are mixed, be loaded in the diaphragm capsule;
(3) the raw material wire rod is carried out being drawn to the first time diameter 3.2mm;
(4) carve radially indentation on the surface of the raw material wire rod of diameter 3.2mm;
(5) al-mg alloy powder 20g, ti powder 10g, selenium oxide powder 20g, lithium carbonate powder 10g, ceria oxide powder 20g, tellurium oxide powder 10g, barium Ji Lasi powder 10g are mixed, be loaded in the diaphragm capsule;
(6) carry out being drawn to the second time diameter 1.5mm finished product welding wire, the thickness of activating agent overlay is 0.01mm.
Embodiment 9
(1) with the H08A welding wire raw material wire rod of diameter 5.5mm, peeling off is coated with boron, carves radially indentation on its surface;
(2) al-mg alloy powder 40g, ti powder 10g, lithium carbonate powder 30g, barium Ji Lasi powder 20g are mixed, be loaded in the diaphragm capsule;
(3) the raw material wire rod is carried out being drawn to the first time diameter 2.8mm;
(4) carve oblique indentation on the surface of the raw material wire rod of diameter 3.2mm, the angle of said oblique indentation and welding wire axis is 50 degree;
(5) al-mg alloy powder 30g, titanium dioxide powder 20g, ceria oxide powder 10g, selenium powder end 10g, telloy 20g, barium Ji Lasi powder 10g are mixed, be loaded in the diaphragm capsule;
(6) carry out being drawn to the second time diameter 1.8mm finished product welding wire, the thickness of activating agent overlay is 0.05mm.
Embodiment 10
(1) with the ER50-6 welding wire raw material wire rod of diameter 5.5mm, peeling off is coated with boron, carves oblique indentation on its surface, and oblique indentation and welding wire axis angle are 30 degree;
(2) with al-mg alloy powder 25g, ti powder 25g, lithium carbonate powder 20g, cerium powder 20g and plant oil based wire drawing oil 10g, mix, be loaded in the diaphragm capsule;
(3) the raw material wire rod is carried out being drawn to the first time diameter 4.0mm;
(4) carve radially indentation on the surface of the raw material wire rod of diameter 2.3mm;
(5) with al-mg alloy powder 42g, ti powder 18g, selenium oxide powder 10g, tellurium oxide powder 20g and plant oil based wire drawing oil 10g, mix, be loaded in the diaphragm capsule;
(6) carry out being drawn to the second time diameter 1.6mm finished product welding wire, the thickness of activating agent overlay is 0.008mm.
Embodiment 11
(1) with the H08A welding wire raw material wire rod of diameter 5.5mm, peeling off is coated with boron, carves oblique indentation on its surface, and oblique indentation and welding wire axis angle are 40 degree;
(2) with al-mg alloy powder 35g, ti powder 25g, lithium carbonate powder 20g, ceria oxide powder 10g and plant oil based wire drawing oil 10g, mix, be loaded in the diaphragm capsule;
(3) the raw material wire rod is carried out being drawn to the first time diameter 2.3mm;
(4) carve oblique indentation on the surface of the raw material wire rod of diameter 2.3mm, oblique indentation and welding wire axis angle are 60 degree;
(5) with al-mg alloy powder 40g, titanium dioxide powder 10g, lithium carbonate powder 10g, selenium powder end 10g, telloy 20g and plant oil based wire drawing oil 10g, mix, be loaded in the diaphragm capsule;
(6) carry out being drawn to the second time diameter 1.8mm finished product welding wire, the thickness of activating agent overlay is 0.05mm.
Embodiment 12
(1) with the ER50-6 welding wire raw material wire rod of diameter 5.5mm, peeling off is coated with boron, carves oblique indentation on its surface, and oblique indentation and welding wire axis angle are 60 degree;
(2) with al-mg alloy powder 35g, ti powder 25g, lithium carbonate powder 20g, selenium powder end 10g and calcium Ji Lasi powder 10g, mix, be loaded in the diaphragm capsule;
(3) the raw material wire rod is carried out being drawn to the first time diameter 2.3mm;
(4) carve oblique indentation on the surface of the raw material wire rod of diameter 2.3mm, oblique indentation and welding wire axis angle are 40 degree;
(5) with al-mg alloy powder 40g, titanium dioxide powder 10g, lithium carbonate powder 10g, ceria oxide powder 10g, telloy 20g and plant oil based wire drawing oil 10g, mix, be loaded in the diaphragm capsule;
(6) carry out being drawn to the second time diameter 1.8mm finished product welding wire, the thickness of activating agent overlay is 0.05mm.
Embodiment 13
(1) with the H08A welding wire raw material wire rod of diameter 5.5mm, peeling off is coated with boron, carves oblique indentation on its surface, and oblique indentation and welding wire axis angle are 40 degree;
(2) with al-mg alloy powder 35g, ti powder 25g, tellurium oxide powder 20g, ceria oxide powder 10g and plant oil based wire drawing oil 10g, mix, be loaded in the diaphragm capsule;
(3) the raw material wire rod is carried out being drawn to the first time diameter 2.3mm;
(4) carve oblique indentation on the surface of the raw material wire rod of diameter 2.3mm, oblique indentation and welding wire axis angle are 60 degree;
(5) with al-mg alloy powder 40g, titanium dioxide powder 10g, lithium carbonate powder 20g, selenium powder end 10g, ceria oxide powder 10g and plant oil based wire drawing oil 10g, mix, be loaded in the diaphragm capsule;
(6) carry out being drawn to the second time diameter 1.8mm finished product welding wire, the thickness of activating agent overlay is 0.05mm.
Embodiment 14
(1) with the ER50-6 welding wire raw material wire rod of diameter 5.5mm, peeling off is coated with boron, carves oblique indentation on its surface, and oblique indentation and welding wire axis angle are 40 degree;
(2) with al-mg alloy powder 35g, ti powder 25g, lithium carbonate powder 20g, tellurium oxide powder 10g and plant oil based wire drawing oil 10g, mix, be loaded in the diaphragm capsule;
(3) the raw material wire rod is carried out being drawn to the first time diameter 2.3mm;
(4) carve radially indentation on the surface of the raw material wire rod of diameter 2.3mm;
(5) with al-mg alloy powder 40g, titanium dioxide powder 10g, lithium carbonate powder 10g, selenium powder end 10g, ceria oxide powder 20g and plant oil based wire drawing oil 10g, mix, be loaded in the diaphragm capsule;
(6) carry out being drawn to the second time diameter 1.8mm finished product welding wire, the thickness of activating agent overlay is 0.05mm.
Embodiment 15
(1) with the H08A welding wire raw material wire rod of diameter 5.5mm, peeling off is coated with boron, carves radially indentation on the surface;
(2) with al-mg alloy powder 49g, titanium dioxide powder 21g, selenium oxide powder 10g and mineral oil based wire drawing oil 20g mix, and are loaded in the diaphragm capsule;
(3) the raw material wire rod is carried out being drawn to the first time diameter 2.3mm;
(4) carve radially indentation on the surface of the raw material wire rod of diameter 2.3mm;
(5) with al-mg alloy powder 21g, titanium dioxide powder 3g, ceria oxide powder 20g, tellurium oxide powder 20g and mineral oil based wire drawing oil 30g mix, and are loaded in the diaphragm capsule;
(6) carry out being drawn to the second time diameter 1.2mm finished product welding wire, the thickness of activating agent overlay is 0.1mm.
Embodiment 16
(1) with the ER50-6 welding wire raw material wire rod of diameter 5.5mm, peeling off is coated with boron, carves oblique indentation on its surface, and oblique indentation and welding wire axis angle are 30 degree;
(2) with al-mg alloy powder 21g, ti powder 9g, lithium carbonate powder 20g, ceria oxide powder 20g and plant oil based wire drawing oil 30g, mix, be loaded in the diaphragm capsule;
(3) the raw material wire rod is carried out being drawn to the first time diameter 4.0mm;
(4) carve oblique indentation on the surface of the raw material wire rod of diameter 2.3mm, oblique indentation and welding wire axis angle are 50 degree;
(5) with al-mg alloy powder 42g, ti powder 18g, lithium carbonate powder 10g, tellurium oxide powder 20g and plant oil based wire drawing oil 10g, mix, be loaded in the diaphragm capsule;
(6) carry out being drawn to the second time diameter 1.6mm finished product welding wire, the thickness of activating agent overlay is 0.01mm.
Compare with common copper facing H08A welding wire, welding wire of the present invention and preparation method thereof has following beneficial effect:
(1) production process need not to clean and copper facing, and one ton of welding wire of every production can reduce and contains acid and contain 10 tons of the sewage discharges that alkali contains heavy metal ion, reduces acid mist, the alkali mist discharges several kilosteres;
Spatter loss coefficient reduced more than 30% when (2) welding wire welded;
(3) CO
2(copper facing H08A welding wire CO appears in the deposited metal pore-free during gas shielded arc welding
2During gas shielded arc welding, the deposited metal pore is difficult to avoid);
(4) CO
2Fusion penetration increased more than 20% when welding wire welded during gas shielded arc welding.
Can adopt once among the preparation method of the present invention, secondary or indentation and through the drawing of wire drawing die, to reach gage of wire and the coating layer thickness that needs more frequently.Bioactive agent composition of the present invention adopts powder to be coated with pressure, and wherein embodiment 2,4,15,16 selects for use granularity less than 300 purpose powder, and effect is better relatively.Al-mg alloy powder of the present invention can adopt industrial alloyed powder; Al-mg alloy powder, ti powder or titanium dioxide powder can improve welding wire rustless property and welding wire conductive capability, in welding, guarantee the stable of deoxidation and electric arc, reduce to splash, and crystal grain thinning improves welding performance simultaneously; Lithium carbonate can further improve the stability of electric arc; Elemental selenium, cerium and tellurium can the refinement molten drops, and minimizing is splashed, and increase fusion penetration, can select its powder or oxide powder to add; Wire drawing lubricant can guarantee the stability of drawing process; Reduce wire broken rate; Improve the rustless property of welding wire simultaneously; Select calcium Ji Lasi powder commonly used in the drawing welding wire technology, sodium Ji Lasi powder, barium Ji Lasi powder, mineral oil based wire drawing oil, plant oil based wire drawing oil for use, the those skilled in the art can select corresponding component and content from summary of the invention, to realize technical scheme of the present invention.
More than the present invention has been done exemplary description; Should be noted that; Under the situation that does not break away from core of the present invention, the replacement that is equal to that any simple distortion, modification or other those skilled in the art can not spend creative work all falls into protection scope of the present invention.
Claims (6)
1. a coating welding wire that is used for carbon dioxide gas arc welding comprises welding wire and activating agent overlay, it is characterized in that; The indentation processing is carried out on welding wire raw material wire rod surface peeling off after being coated with boron, then the wire rod behind the indentation is carried out drawing, in drawing process; Wire rod is through being equipped with the diaphragm capsule of activating agent and wire drawing die; Wherein said activating agent is painted on the surface of wire rod earlier, is coated with by wire drawing die and is pressed in the wire rod surface, forms continuous activator overlay; Said activating agent according to mass percent by the cerium powder of the ti powder of the Al-Mg alloy powder of 20-65%, 8-45% or titanium dioxide powder, 0-20% or ceria oxide powder, the lithium carbonate powder of 0-30%, telloy or tellurium oxide powder, the selenium powder end of 0-20% or the wire drawing lubricant of selenium oxide powder and 10-30% of 0-20%.
2. a kind of coating welding wire that is used for carbon dioxide gas arc welding according to claim 1 is characterized in that the thickness of said activating agent overlay is 0.0001-0.1mm.
3. a kind of coating welding wire that is used for carbon dioxide gas arc welding according to claim 1 is characterized in that, said indentation is indentation radially or oblique indentation, and the angle of wherein said oblique indentation and welding wire axis is the 30-90 degree.
4. a method for preparing coating welding wire as claimed in claim 1 is characterized in that, carries out according to following step: welding wire raw material wire rod is peeled off is coated with boron earlier, carries out indentation on its surface and handles; Then the raw material wire rod behind the indentation is carried out drawing, in drawing process, the raw material wire rod that has indentation is through being provided with the diaphragm capsule of activating agent and wire drawing die, and wherein said activating agent is painted on the surface of wire rod earlier, is coated with by wire drawing die machinery and is pressed in the wire rod surface; Said activating agent according to mass percent by the cerium powder of the ti powder of the Al-Mg alloy powder of 20-65%, 8-45% or titanium dioxide powder, 0-20% or ceria oxide powder, the lithium carbonate powder of 0-30%, telloy or tellurium oxide powder, the selenium powder end of 0-20% or the wire drawing lubricant of selenium oxide powder and 10-30% of 0-20%.
5. a kind of method for preparing coating welding wire as claimed in claim 1 according to claim 4 is characterized in that, said indentation is indentation radially or oblique indentation, and the angle of wherein said oblique indentation and welding wire axis is the 30-90 degree.
6. a kind of method for preparing coating welding wire as claimed in claim 1 according to claim 4 is characterized in that, the thickness of said activating agent overlay on the welding wire top layer is 0.0001-0.1mm.
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| CN2009100699994A CN101633083B (en) | 2009-07-31 | 2009-07-31 | Coating welding wire for carbon dioxide arc welding and preparation method thereof |
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| CN2009100699994A CN101633083B (en) | 2009-07-31 | 2009-07-31 | Coating welding wire for carbon dioxide arc welding and preparation method thereof |
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| CN101633083A (en) | 2010-01-27 |
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