CN117506228A - Efficient composite steel core stainless steel welding rod and preparation method thereof - Google Patents
Efficient composite steel core stainless steel welding rod and preparation method thereof Download PDFInfo
- Publication number
- CN117506228A CN117506228A CN202410011267.4A CN202410011267A CN117506228A CN 117506228 A CN117506228 A CN 117506228A CN 202410011267 A CN202410011267 A CN 202410011267A CN 117506228 A CN117506228 A CN 117506228A
- Authority
- CN
- China
- Prior art keywords
- parts
- steel
- core
- welding
- welding rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000003466 welding Methods 0.000 title claims abstract description 124
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 82
- 239000010959 steel Substances 0.000 title claims abstract description 82
- 239000010935 stainless steel Substances 0.000 title claims abstract description 60
- 229910001220 stainless steel Inorganic materials 0.000 title claims abstract description 60
- 239000002131 composite material Substances 0.000 title claims abstract description 30
- 238000002360 preparation method Methods 0.000 title abstract description 13
- 239000011248 coating agent Substances 0.000 claims abstract description 38
- 238000000576 coating method Methods 0.000 claims abstract description 38
- 238000000034 method Methods 0.000 claims abstract description 13
- 239000000843 powder Substances 0.000 claims description 65
- 239000011812 mixed powder Substances 0.000 claims description 35
- PQXKHYXIUOZZFA-UHFFFAOYSA-M lithium fluoride Chemical compound [Li+].[F-] PQXKHYXIUOZZFA-UHFFFAOYSA-M 0.000 claims description 28
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 19
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 17
- 238000004519 manufacturing process Methods 0.000 claims description 17
- 238000002156 mixing Methods 0.000 claims description 15
- 238000007873 sieving Methods 0.000 claims description 15
- 238000003756 stirring Methods 0.000 claims description 15
- 238000005303 weighing Methods 0.000 claims description 15
- 229910052751 metal Inorganic materials 0.000 claims description 12
- 239000002184 metal Substances 0.000 claims description 12
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 10
- 239000011230 binding agent Substances 0.000 claims description 10
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 claims description 10
- 239000010459 dolomite Substances 0.000 claims description 10
- 229910000514 dolomite Inorganic materials 0.000 claims description 10
- 239000010433 feldspar Substances 0.000 claims description 10
- 239000010436 fluorite Substances 0.000 claims description 10
- 239000012535 impurity Substances 0.000 claims description 10
- 239000010445 mica Substances 0.000 claims description 10
- 229910052618 mica group Inorganic materials 0.000 claims description 10
- 235000019353 potassium silicate Nutrition 0.000 claims description 10
- 239000010453 quartz Substances 0.000 claims description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 10
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 10
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 10
- 229910000519 Ferrosilicon Inorganic materials 0.000 claims description 9
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 9
- 239000001913 cellulose Substances 0.000 claims description 9
- 229920002678 cellulose Polymers 0.000 claims description 9
- 229910052804 chromium Inorganic materials 0.000 claims description 9
- 239000011651 chromium Substances 0.000 claims description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 8
- 229910001209 Low-carbon steel Inorganic materials 0.000 claims description 8
- 238000001035 drying Methods 0.000 claims description 8
- 239000010439 graphite Substances 0.000 claims description 8
- 229910002804 graphite Inorganic materials 0.000 claims description 8
- BITYAPCSNKJESK-UHFFFAOYSA-N potassiosodium Chemical compound [Na].[K] BITYAPCSNKJESK-UHFFFAOYSA-N 0.000 claims description 8
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 8
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 4
- 238000005096 rolling process Methods 0.000 claims description 4
- 239000011572 manganese Substances 0.000 claims description 3
- 238000005253 cladding Methods 0.000 claims description 2
- 150000001875 compounds Chemical class 0.000 claims description 2
- 238000011049 filling Methods 0.000 claims description 2
- 229910052748 manganese Inorganic materials 0.000 claims description 2
- 239000002893 slag Substances 0.000 abstract description 11
- 239000000463 material Substances 0.000 abstract description 6
- 239000002699 waste material Substances 0.000 abstract description 5
- 238000005336 cracking Methods 0.000 abstract description 4
- 239000007787 solid Substances 0.000 abstract description 2
- 239000002994 raw material Substances 0.000 description 12
- 230000004907 flux Effects 0.000 description 9
- 229910045601 alloy Inorganic materials 0.000 description 8
- 239000000956 alloy Substances 0.000 description 8
- 239000003814 drug Substances 0.000 description 8
- 239000002245 particle Substances 0.000 description 8
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 6
- 230000007547 defect Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 230000008595 infiltration Effects 0.000 description 4
- 238000001764 infiltration Methods 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 230000000087 stabilizing effect Effects 0.000 description 3
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010891 electric arc Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229940072033 potash Drugs 0.000 description 2
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 2
- 235000015320 potassium carbonate Nutrition 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 239000003381 stabilizer Substances 0.000 description 2
- 229910004261 CaF 2 Inorganic materials 0.000 description 1
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 229910010413 TiO 2 Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000006356 dehydrogenation reaction Methods 0.000 description 1
- 230000003009 desulfurizing effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
- B23K35/3053—Fe as the principal constituent
- B23K35/308—Fe as the principal constituent with Cr as next major constituent
- B23K35/3086—Fe as the principal constituent with Cr as next major constituent containing Ni or Mn
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/02—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape
- B23K35/0255—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape for use in welding
- B23K35/0261—Rods, electrodes, wires
- B23K35/0266—Rods, electrodes, wires flux-cored
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Nonmetallic Welding Materials (AREA)
Abstract
The invention belongs to the technical field of welding materials, and particularly relates to a high-efficiency composite steel core stainless steel welding rod and a preparation method thereof. And the steel core is not solid, even if the temperature rise of the steel core is larger during ultra-large current welding, the outer expansion of the steel core is far smaller than the inner expansion, and no larger pressure is generated on the outer coating, so that the problems of coating cracking and falling off can be solved, the ultra-large current efficient welding can be realized, the waste is reduced, the problem of tail red of the traditional stainless steel welding rod is fundamentally solved, the ultra-large current welding is adapted, the problems of coating cracking and falling off at the rear end of the welding are solved, the welding arc is stable, the splashing is small, the slag is easy to fall off, the air hole resistance is strong, the welding efficiency can be greatly improved, the waste is reduced, and the welding method has great popularization and practical significance.
Description
Technical Field
The invention belongs to the technical field of welding materials, and particularly relates to a high-efficiency composite steel core stainless steel welding rod and a preparation method thereof.
Background
The stainless steel welding rod has wide application, and the demand of the stainless steel welding rod is increased year by year along with the increase of the application amount of industries such as petrochemical industry, low-temperature containers, medical equipment, food processing, environmental protection and the like. The traditional stainless steel welding rod has the defects of poor welding manufacturability and extremely high welding defect caused by the fact that the linear expansion coefficient of an austenitic steel core of the traditional stainless steel welding rod is large, the resistivity is high, the heating is serious in the welding process, the heating becomes red when the rear end of the welding rod is about 1/3 of the position, and the coating is cracked and falls off at high temperature (commonly called as tail red). And in many industries, the welding is not performed within the technological parameter range recommended by welding material manufacturers, but the welding efficiency is improved by using ultra-large current welding, and the construction period is shortened. In order to avoid welding defects, many welders stop welding when the electrode starts to turn red, and replace a new electrode, thereby causing great waste.
In order to solve the problem of tail red of the welding rod, technicians at home and abroad do a great deal of work, and can be summarized into two points: 1. adopting various measures to improve the binding force of the coating; 2. and replacing the carbon steel core with low resistivity. But brings new problems such as complex and severe manufacturing process, poor all-position process performance of the welding rod and the like, and can not fundamentally solve the problems all the time.
Disclosure of Invention
Aiming at the problems, the invention provides the high-efficiency composite steel core stainless steel welding rod and the preparation method thereof, which fundamentally solve the problem of tail red of the traditional stainless steel welding rod, are suitable for ultra-large current welding, have no problems of cracking and falling of coating at the rear end of welding, have stable welding arc, small splashing, easy slag stripping and strong air hole resistance, can greatly improve the welding efficiency, reduce waste and have great popularization and practical significance.
The scheme provided by the invention is as follows:
the utility model provides a high-efficient compound steel core stainless steel welding rod, includes powder core, steel band and coating, the powder core parcel is in inside the steel band, the coating cladding is outside the steel band, the powder core includes the following component of mass portion:
56-58 parts of metal chromium;
35-37 parts of nickel powder;
1-2 parts of metal manganese;
1-2 parts of 45# ferrosilicon;
0.5 to 1.0 part of graphite;
the balance of reduced iron powder and unavoidable impurities;
the powder core accounts for 18-20% of the total mass of the welding rod.
The steel belt is a low-carbon steel belt and comprises the following components in parts by weight:
c: less than or equal to 0.04 percent, mn:0.10 to 0.25 percent, si: less than or equal to 0.05 percent, S: less than or equal to 0.02 percent, P: less than or equal to 0.02 percent, and the balance of Fe and unavoidable impurities; the steel belt accounts for 33-37% of the total mass of the welding rod.
Wherein, 45 to 55 parts of rutile, 5 to 8 parts of fluorite, 10 to 15 parts of dolomite, 3 to 5 parts of quartz, 15 to 20 parts of potassium-sodium feldspar, 4 to 6 parts of mica, 0.5 to 1.5 parts of lithium fluoride, 0.5 to 1.5 parts of sodium carbonate and 0.3 to 0.8 part of cellulose; the coating accounts for 45-47% of the total mass of the welding rod.
The powder core has the following functions:
manganese metal: the alloy is mainly used as deoxidizer, alloy infiltration and desulfurizing agent, and is used for transferring Mn element to the weld joint so as to improve the strength of the weld joint.
45# ferrosilicon: the alloy is mainly used as deoxidizer and alloy infiltration, and excessive addition can increase splashing and reduce toughness, and the excessive addition can cause poor fluidity of a molten pool and poor mechanical properties of a welding seam.
Metal chromium: the alloy is mainly used as an infiltration alloy, the inter-crystal corrosion performance can be reduced when the addition amount is too large, the corrosion resistance of the welding seam can be reduced when the addition amount is too small, and the crack resistance of the welding seam is poor.
Nickel powder: the alloy is mainly used as an infiltration alloy, and is matched with elements such as chromium, manganese, silicon and the like in a welding line in a certain proportion, so that the content of ferrite in the welding line is controlled, and the welding line has better crack resistance and corrosion resistance.
Graphite: the powder is mainly used as a lubricant for improving the fluidity of the internal powder core.
Reduced iron powder: as a balance addition, the method is mainly used for improving the arc state and adjusting the fluidity of molten iron.
Rutile: the main component is TiO 2 Is thatThe main slag former can refine molten drops, improve slag viscosity and promote the formation of fine and smooth welding seams. Too much addition is unfavorable for weld formation, and too little addition can lead to poor arc stability and incomplete slag coverage;
fluorite: the main component is CaF 2 The slag forming, deoxidizing and dehydrogenating functions are realized, the viscosity of slag can be adjusted, the fluidity of the welding seam is improved, the F element is combined with the harmful element H, the H content in the welding seam is reduced, and the welding seam is purified. Too much addition results in poor weld formation, and too little addition is prone to air hole defects.
Dolomite: the main component is CaCO 3 、MgCO 3 And has the functions of gas making and slag making. CO generation by welding 2 CaO, mgO-based basic oxide, CO 2 The molten pool is protected from air intrusion. The CaO and MgO alkaline oxides can improve the slag alkalinity, refine the molten drops, have the function of removing S, P and improve the crack resistance of weld metal. Too much addition can cause increased splashing, and too little addition can cause product air hole defects.
Quartz: the main component is SiO 2 The main function is slag formation, reducing splashing and improving slag viscosity; too much addition results in a sharp increase in viscosity and large splashing, while too little addition results in insignificant effect.
Mica, potash feldspar, lithium fluoride: the main arc stabilizer contains low-ionization substances such as K, na, li and other elements, so that the stability of the electric arc can be effectively improved; the lithium fluoride has excellent arc stabilizing and dehydrogenation capabilities, excessive addition, excessive welding rod cost, increased smoke and dust amount, too little addition and unobvious arc stabilizing effect.
The invention also provides a preparation method of the high-efficiency composite steel core stainless steel welding rod, which comprises the following steps:
s1, sieving and weighing each component of the powder core respectively for later use;
s2, adding the components obtained in the step S1 into a stirrer, and stirring and uniformly mixing to obtain powder core mixed powder;
s3, wrapping the powder core mixed powder obtained in the S2 in a steel belt through a seamless flux-cored wire manufacturing process to manufacture a steel core with the thickness of 2.5-5.0 mm;
s4, sieving and weighing each component of the skin respectively for later use;
s5, adding the components obtained in the step S4 into a stirrer, adding a water glass binder into the stirrer, and then stirring and mixing uniformly to obtain a coating mixed powder;
and S6, coating the coating mixed powder obtained in the step S5 on the steel core obtained in the step S3 through a press coater, and drying to obtain the high-efficiency composite steel core stainless steel welding rod.
Wherein the adding amount of the water glass binder is 21-23% of the total mass of the coating.
The manufacturing process of the seamless flux-cored wire in the step S3 is the applicant' S own patent technology, and specifically comprises the following steps:
a. rolling the steel strip into a U-shaped groove;
b. filling the uniformly mixed powder core mixed powder into the U-shaped groove;
c. closing the U-shaped groove containing the powder core mixed powder, rolling into an O shape, welding, and drawing to a set diameter.
Compared with the prior art, the invention has the advantages that:
1. compared with the traditional stainless steel welding rod, the welding rod has no red expansion problem during welding, the steel core is low carbon steel, the resistivity is only 1/4-1/5 of that of austenitic steel, the temperature rise is small, and the linear expansion phenomenon is not obvious. And the steel core is not solid, even if the temperature rise of the steel core is larger during ultra-large current welding, the outer expansion of the steel core is far smaller than the inner expansion, and no large pressure is generated on the outer coating, so that the problems of cracking and falling of the coating are avoided, the ultra-large current high-efficiency welding can be realized, and the waste is reduced.
2. The welding manufacturability is better. The arc stabilizing performance of lithium fluoride is excellent, but the moisture absorption is larger, so that the arc stabilizing agent of the traditional stainless steel welding rod seldom selects lithium fluoride. The stainless steel electrode steel core of the invention utilizes the advantage that the seamless flux-cored wire is not easy to absorb moisture, and the lithium fluoride with excellent arc stability is added into the internal welding flux, so that the electric arc is more stable and less splashes during welding, thereby being more beneficial to the control of a molten pool by welding personnel and obtaining high-quality welding seams.
Detailed Description
Other advantages and effects of the present invention will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present invention with reference to specific examples. The invention may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present invention. It should be noted that the following embodiments and features in the embodiments may be combined with each other without conflict. It is also to be understood that the terminology used in the examples of the invention is for the purpose of describing particular embodiments only, and is not intended to limit the scope of the invention. The test methods in the following examples, in which specific conditions are not noted, are generally conducted under conventional conditions or under conditions recommended by the respective manufacturers.
Where numerical ranges are provided in the examples, it is understood that unless otherwise stated herein, both endpoints of each numerical range and any number between the two endpoints are significant both in the numerical range. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs and to which this invention belongs, and any method, apparatus, or material of the prior art similar or identical to the methods, apparatus, or materials of the embodiments of the invention may be used to practice the invention.
In addition, the material components not specifically described in the present invention are all selected from conventional raw materials in the welding wire technical field and can be obtained by general commercial methods, and the unpublished conditions are the same in each of the following examples except for the numerical values explicitly given.
The following will be described with specific examples in which the particle size of chromium metal, nickel powder, manganese metal, 45# ferrosilicon, reduced iron powder was 60 mesh, the particle size of rutile, fluorite, dolomite was 40 mesh, the particle size of quartz was 80 mesh, the particle size of potash feldspar was 60 mesh, the particle size of mica was 40 mesh, the particle size of lithium fluoride was 60 mesh, the particle size of cellulose was 120 mesh, and the particle size of soda was 80 mesh.
The manufacturing process of the seamless flux-cored wire in the embodiment is the proprietary technology owned by the applicant, and reference may be made to the prior art documents of the applicant, and thus, details are not repeated herein.
Example 1
The high-efficiency composite steel core stainless steel welding rod inner powder core comprises the following raw materials in parts by weight: 56 parts of metal chromium, 35 parts of nickel powder, 2 parts of metal manganese, 2 parts of 45# ferrosilicon, 0.5 part of graphite and the balance of reduced iron powder. The powder core accounts for 18 percent of the total weight of the stainless steel welding rod
The middle steel sheet is a low-carbon steel strip and comprises the following components in percentage by mass: c: less than or equal to 0.04 percent, mn:0.10% -0.25%, si: less than or equal to 0.05, S: less than or equal to 0.02, P: less than or equal to 0.02 percent, and the balance of Fe and unavoidable impurities. The steel belt accounts for 37 percent of the total weight of the stainless steel welding rod
The external welding flux comprises the following raw materials in parts by weight: 45 parts of rutile, 8 parts of fluorite, 10 parts of dolomite, 3 parts of quartz, 15 parts of potassium-sodium feldspar, 4 parts of mica, 1.5 parts of lithium fluoride, 0.5 part of sodium carbonate and 0.3 part of cellulose. The coating accounts for 45 percent of the total weight of the stainless steel welding rod
The preparation method of the high-efficiency composite steel core stainless steel welding rod comprises the following steps:
s1, sieving and weighing each component of the powder core respectively for later use;
s2, adding the medicinal powder of each component obtained in the step S1 into a stirrer, and stirring and uniformly mixing to obtain powder core mixed powder;
s3, manufacturing the powder core mixed powder obtained in the step S2 into a steel core with the thickness of 2.5mm through a seamless flux-cored wire manufacturing process.
S4, sieving and weighing each component of the skin respectively for later use;
s5, adding the medicinal powder of each component obtained in the S4 into a stirrer, adding a water glass binder accounting for 21% of the total mass of the medicine skin into the stirrer, and then stirring and mixing uniformly to obtain medicine skin mixed powder;
and S6, coating the coating mixed powder obtained in the step S5 on the steel core obtained in the step S3 through a press coater, and drying to obtain the high-efficiency composite steel core stainless steel welding rod.
Example 2
The high-efficiency composite steel core stainless steel welding rod inner powder core comprises the following raw materials in parts by weight: 58 parts of metal chromium, 37 parts of nickel powder, 1 part of metal manganese, 1 part of 45# ferrosilicon, 1 part of graphite and the balance of reduced iron powder. The powder core accounts for 20 percent of the total weight of the stainless steel welding rod
The middle steel sheet is a low-carbon steel strip and comprises the following components in percentage by mass: c: less than or equal to 0.04 percent, mn:0.10% -0.25%, si: less than or equal to 0.05, S: less than or equal to 0.02, P: less than or equal to 0.02 percent, and the balance of Fe and unavoidable impurities. The steel belt accounts for 33 percent of the total weight of the stainless steel welding rod
The external welding flux comprises the following raw materials in parts by weight: 55 parts of rutile, 5 parts of fluorite, 15 parts of dolomite, 5 parts of quartz, 20 parts of potassium-sodium feldspar, 6 parts of mica, 0.5 part of lithium fluoride, 1.5 parts of sodium carbonate and 0.8 part of cellulose. The coating accounts for 47 percent of the total weight of the stainless steel welding rod
The preparation method of the high-efficiency composite steel core stainless steel welding rod comprises the following steps:
s1, sieving and weighing each component of the powder core respectively for later use;
s2, adding the medicinal powder of each component obtained in the step S1 into a stirrer, and stirring and uniformly mixing to obtain powder core mixed powder;
s3, manufacturing the powder core mixed powder obtained in the step S2 into a 5mm steel core through a seamless flux-cored wire manufacturing process.
S4, sieving and weighing each component of the skin respectively for later use;
s5, adding the medicinal powder of each component obtained in the S4 into a stirrer, adding a water glass binder accounting for 23% of the total mass of the medicine skin into the stirrer, and then stirring and mixing uniformly to obtain medicine skin mixed powder;
and S6, coating the coating mixed powder obtained in the step S5 on the steel core obtained in the step S3 through a press coater, and drying to obtain the high-efficiency composite steel core stainless steel welding rod.
Example 3
The high-efficiency composite steel core stainless steel welding rod inner powder core comprises the following raw materials in parts by weight: 57 parts of metallic chromium, 36 parts of nickel powder, 1.5 parts of metallic manganese, 1.5 parts of 45# ferrosilicon, 0.8 part of graphite and the balance of reduced iron powder. The powder core accounts for 19 percent of the total weight of the stainless steel welding rod
The middle steel sheet is a low-carbon steel strip and comprises the following components in percentage by mass: c: less than or equal to 0.04 percent, mn:0.10% -0.25%, si: less than or equal to 0.05, S: less than or equal to 0.02, P: less than or equal to 0.02 percent, and the balance of Fe and unavoidable impurities. The steel belt accounts for 35 percent of the total weight of the stainless steel welding rod
The external welding flux comprises the following raw materials in parts by weight: 50 parts of rutile, 7 parts of fluorite, 12 parts of dolomite, 4 parts of quartz, 18 parts of potassium-sodium feldspar, 5 parts of mica, 1 part of lithium fluoride, 1 part of sodium carbonate and 0.5 part of cellulose. The coating accounts for 46 percent of the total weight of the stainless steel welding rod
The preparation method of the high-efficiency composite steel core stainless steel welding rod comprises the following steps:
s1, sieving and weighing each component of the powder core respectively for later use;
s2, adding the medicinal powder of each component obtained in the step S1 into a stirrer, and stirring and uniformly mixing to obtain powder core mixed powder;
s3, manufacturing the powder core mixed powder obtained in the step S2 into a steel core with the thickness of 3.2mm through a seamless flux-cored wire manufacturing process.
S4, sieving and weighing each component of the skin respectively for later use;
s5, adding the medicinal powder of each component obtained in the S4 into a stirrer, adding a water glass binder accounting for 22% of the total mass of the medicine skin into the stirrer, and then stirring and mixing uniformly to obtain medicine skin mixed powder;
and S6, coating the coating mixed powder obtained in the step S5 on the steel core obtained in the step S3 through a press coater, and drying to obtain the high-efficiency composite steel core stainless steel welding rod.
Example 4
The high-efficiency composite steel core stainless steel welding rod inner powder core comprises the following raw materials in parts by weight: 56 parts of metal chromium, 36 parts of nickel powder, 2 parts of metal manganese, 1 part of 45# ferrosilicon, 0.7 part of graphite and the balance of reduced iron powder. The powder core accounts for 18 percent of the total weight of the stainless steel welding rod
The middle steel sheet is a low-carbon steel strip and comprises the following components in percentage by mass: c: less than or equal to 0.04 percent, mn:0.10% -0.25%, si: less than or equal to 0.05, S: less than or equal to 0.02, P: less than or equal to 0.02 percent, and the balance of Fe and unavoidable impurities. The steel belt accounts for 36 percent of the total weight of the stainless steel welding rod
The external welding flux comprises the following raw materials in parts by weight: 47 parts of rutile, 6 parts of fluorite, 11 parts of dolomite, 5 parts of quartz, 17 parts of potassium-sodium feldspar, 5 parts of mica, 1.1 parts of lithium fluoride, 0.9 part of sodium carbonate and 0.6 part of cellulose. The coating accounts for 46 percent of the total weight of the stainless steel welding rod
The preparation method of the high-efficiency composite steel core stainless steel welding rod comprises the following steps:
s1, sieving and weighing each component of the powder core respectively for later use;
s2, adding the medicinal powder of each component obtained in the step S1 into a stirrer, and stirring and uniformly mixing to obtain powder core mixed powder;
s3, manufacturing the powder core mixed powder obtained in the step S2 into a 4mm steel core through a seamless flux-cored wire manufacturing process.
S4, sieving and weighing each component of the skin respectively for later use;
s5, adding the medicinal powder of each component obtained in the S4 into a stirrer, adding a water glass binder accounting for 23% of the total mass of the medicine skin into the stirrer, and then stirring and mixing uniformly to obtain medicine skin mixed powder;
and S6, coating the coating mixed powder obtained in the step S5 on the steel core obtained in the step S3 through a press coater, and drying to obtain the high-efficiency composite steel core stainless steel welding rod.
Comparative example 1
The high-efficiency composite steel core stainless steel welding rod inner powder core comprises the following raw materials in parts by weight: 54 parts of metallic chromium, 40 parts of nickel powder, 2.5 parts of metallic manganese, 0.9 part of 45# ferrosilicon, 0.5 part of graphite and the balance of reduced iron powder. The powder core accounts for 17 percent of the total weight of the stainless steel welding rod
The middle steel sheet is a low-carbon steel strip and comprises the following components in percentage by mass: c: less than or equal to 0.04 percent, mn:0.10% -0.25%, si: less than or equal to 0.05, S: less than or equal to 0.02, P: less than or equal to 0.02 percent, and the balance of Fe and unavoidable impurities. The steel belt accounts for 33 to 37 percent of the total weight of the stainless steel welding rod
The external welding flux comprises the following raw materials in parts by weight: 44 parts of rutile, 10 parts of fluorite, 9 parts of dolomite, 7 parts of quartz, 15 parts of potassium-sodium feldspar, 8 parts of mica, 3 parts of lithium fluoride, 1 part of sodium carbonate and 1 part of cellulose. The coating accounts for 45-47% of the total weight of the stainless steel welding rod
The preparation method of the high-efficiency composite steel core stainless steel welding rod comprises the following steps:
s1, sieving and weighing each component of the powder core respectively for later use;
s2, adding the medicinal powder of each component obtained in the step S1 into a stirrer, and stirring and uniformly mixing to obtain powder core mixed powder;
s3, manufacturing the powder core mixed powder obtained in the step S2 into a steel core with the thickness of 3.2mm through a seamless flux-cored wire manufacturing process.
S4, sieving and weighing each component of the skin respectively for later use;
s5, adding the medicinal powder of each component obtained in the S4 into a stirrer, adding a water glass binder into the stirrer, and then stirring and mixing uniformly to obtain a medicinal powder mixture;
and S6, coating the coating mixed powder obtained in the step S5 on the steel core obtained in the step S3 through a press coater, and drying to obtain the high-efficiency composite steel core stainless steel welding rod.
Comparative example 2
The traditional austenitic ER308L steel core is used, and comprises the following components in percentage by mass: c: less than or equal to 0.03 percent, mn:1.0 to 2.5 percent, si: less than or equal to 0.65 percent, cr:19.5 to 22.0 percent, ni:9.0 to 11.0 percent, and the balance of Fe and unavoidable impurities. The middle steel skin accounts for 53 to 55 percent of the total weight of the stainless steel welding rod
The external welding flux comprises the following raw materials in parts by weight: 44 parts of rutile, 10 parts of fluorite, 9 parts of dolomite, 7 parts of quartz, 15 parts of potassium-sodium feldspar, 8 parts of mica, 3 parts of lithium fluoride, 1 part of sodium carbonate and 1 part of cellulose. The external welding flux accounts for 45 to 47 percent of the total weight of the stainless steel welding rod
The invention also provides a preparation method of the high-efficiency composite steel core stainless steel welding rod, which comprises the following preparation steps:
s1, sieving and weighing each component of the external welding flux respectively for later use;
s2, adding the medicinal powder of each component obtained in the step S1 into a stirrer, adding a water glass binder into the stirrer, and then stirring and mixing uniformly to obtain mixed powder;
and S3, pressing the mixed powder obtained in the step S2 on an austenitic steel core through a pressing coater, and drying to obtain the traditional stainless steel welding rod.
Welding tests were conducted using the stainless steel electrodes prepared in examples 1 to 4, comparative example 1, and comparative example 2, and the welding process properties of the electrodes were tested, and the results are shown in the following table.
Welding process performance test results of welding rod
As shown in the table, the high-efficiency composite steel core stainless steel welding rod has the advantages of good arc stability, small splashing, attractive appearance, easy deslagging and tail red problem in the welding process.
The above embodiments are merely illustrative of the principles of the present invention and its effectiveness, and are not intended to limit the invention. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the invention. Accordingly, it is intended that all equivalent modifications and variations of the invention be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.
Claims (6)
1. The utility model provides a high-efficient compound steel core stainless steel welding rod, includes powder core, steel band and coating, the powder core parcel is in inside the steel band, the coating cladding is outside the steel band, its characterized in that, the powder core includes the component of following mass portion:
56-58 parts of metal chromium;
35-37 parts of nickel powder;
1-2 parts of metal manganese;
1-2 parts of 45# ferrosilicon;
0.5 to 1.0 part of graphite;
the balance of reduced iron powder and unavoidable impurities;
the powder core accounts for 18-20% of the total mass of the welding rod.
2. The high-efficiency composite steel core stainless steel welding rod as claimed in claim 1, wherein the steel strip is a low-carbon steel strip and comprises the following components in parts by mass:
c: less than or equal to 0.04 percent, mn:0.10 to 0.25 percent, si: less than or equal to 0.05 percent, S: less than or equal to 0.02 percent, P: less than or equal to 0.02 percent, and the balance of Fe and unavoidable impurities;
the steel belt accounts for 33-37% of the total mass of the welding rod.
3. The high-efficiency composite steel core stainless steel welding rod according to claim 1, wherein the coating comprises the following components in parts by mass:
45-55 parts of rutile, 5-8 parts of fluorite, 10-15 parts of dolomite, 3-5 parts of quartz, 15-20 parts of potassium-sodium feldspar, 4-6 parts of mica, 0.5-1.5 parts of lithium fluoride, 0.5-1.5 parts of sodium carbonate and 0.3-0.8 parts of cellulose;
the coating accounts for 45-47% of the total mass of the welding rod.
4. A method of preparing the high efficiency composite steel cored stainless steel electrode of claim 1 comprising the steps of:
s1, sieving and weighing each component of the powder core respectively for later use;
s2, adding the components obtained in the step S1 into a stirrer, and stirring and uniformly mixing to obtain powder core mixed powder;
s3, wrapping the powder core mixed powder obtained in the S2 in a steel belt through a seamless flux-cored wire manufacturing process to manufacture a steel core with the thickness of 2.5-5.0 mm;
s4, sieving and weighing each component of the skin respectively for later use;
s5, adding the components obtained in the step S4 into a stirrer, adding a water glass binder into the stirrer, and then stirring and mixing uniformly to obtain a coating mixed powder;
and S6, coating the coating mixed powder obtained in the step S5 on the steel core obtained in the step S3 through a press coater, and drying to obtain the high-efficiency composite steel core stainless steel welding rod.
5. The method for preparing a high-efficiency composite steel core stainless steel welding rod according to claim 4, wherein the addition amount of the water glass binder is 21-23% of the total mass of the coating.
6. The method for preparing a high-efficiency composite steel-cored stainless steel electrode of claim 4 wherein the seamless flux-cored wire in step S3 comprises the steps of:
a. rolling the steel strip into a U-shaped groove;
b. filling the uniformly mixed powder core mixed powder into the U-shaped groove;
c. closing a U-shaped groove containing powder core mixed powder, rolling into an O-shape, welding, and drawing to a set diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410011267.4A CN117506228B (en) | 2024-01-04 | 2024-01-04 | Efficient composite steel core stainless steel welding rod and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410011267.4A CN117506228B (en) | 2024-01-04 | 2024-01-04 | Efficient composite steel core stainless steel welding rod and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117506228A true CN117506228A (en) | 2024-02-06 |
| CN117506228B CN117506228B (en) | 2024-03-15 |
Family
ID=89766835
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410011267.4A Active CN117506228B (en) | 2024-01-04 | 2024-01-04 | Efficient composite steel core stainless steel welding rod and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117506228B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1057956A (en) * | 1951-08-14 | 1954-03-12 | Foote Mineral Co | Welding electrode coating, and method of manufacturing the same |
| CN101244496A (en) * | 2008-03-14 | 2008-08-20 | 武汉铁锚焊接材料股份有限公司 | Chromium-molybdenum-seel flux welding wire for gas shielded arc welding |
| CN101362260A (en) * | 2008-09-27 | 2009-02-11 | 北京金威焊材有限公司 | Stainless steel electrode special for magnesium reduction pot |
| CN102699579A (en) * | 2012-06-12 | 2012-10-03 | 中冶焊接科技有限公司 | Flux-cored wire for gas-shielded welding of high-chromium-nickel all-austenitic stainless steel |
| CN106624442A (en) * | 2016-11-28 | 2017-05-10 | 安徽飞弧焊业股份有限公司 | High-tenacity less-splashing self-shielded coated flux-cored welding wire and preparation method thereof |
| CN107931887A (en) * | 2017-11-16 | 2018-04-20 | 天津大桥焊材集团有限公司 | A kind of end socket special stainless steel gas shielded arc welding flux-cored wire and preparation method thereof |
| CN110625298A (en) * | 2019-11-06 | 2019-12-31 | 山东聚力焊接材料有限公司 | Welding wire flux-cored material with crack resistance and air hole resistance, welding wire and preparation method thereof |
-
2024
- 2024-01-04 CN CN202410011267.4A patent/CN117506228B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1057956A (en) * | 1951-08-14 | 1954-03-12 | Foote Mineral Co | Welding electrode coating, and method of manufacturing the same |
| CN101244496A (en) * | 2008-03-14 | 2008-08-20 | 武汉铁锚焊接材料股份有限公司 | Chromium-molybdenum-seel flux welding wire for gas shielded arc welding |
| CN101362260A (en) * | 2008-09-27 | 2009-02-11 | 北京金威焊材有限公司 | Stainless steel electrode special for magnesium reduction pot |
| CN102699579A (en) * | 2012-06-12 | 2012-10-03 | 中冶焊接科技有限公司 | Flux-cored wire for gas-shielded welding of high-chromium-nickel all-austenitic stainless steel |
| CN106624442A (en) * | 2016-11-28 | 2017-05-10 | 安徽飞弧焊业股份有限公司 | High-tenacity less-splashing self-shielded coated flux-cored welding wire and preparation method thereof |
| CN107931887A (en) * | 2017-11-16 | 2018-04-20 | 天津大桥焊材集团有限公司 | A kind of end socket special stainless steel gas shielded arc welding flux-cored wire and preparation method thereof |
| CN110625298A (en) * | 2019-11-06 | 2019-12-31 | 山东聚力焊接材料有限公司 | Welding wire flux-cored material with crack resistance and air hole resistance, welding wire and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN117506228B (en) | 2024-03-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103008913B (en) | Corrosion-resistance stainless steel electric welding rod used for nuclear power and production method thereof | |
| CN107931887B (en) | Special stainless steel gas shielded welding flux-cored wire for end socket and preparation method thereof | |
| CN110682027B (en) | Electric welding rod with seamless welding core for high-manganese austenite low-temperature steel and preparation method | |
| CN111618479B (en) | Welding rod for 5% Ni steel and preparation method thereof | |
| CN111590239B (en) | Martensite heat-resistant steel welding rod for ultra-supercritical thermal power generating unit and preparation method thereof | |
| CN109623192B (en) | Stainless steel welding rod core wire with extremely low temperature rise, stainless steel welding rod, preparation and application | |
| CN106514040A (en) | Gas-shielded stainless steel flux-cored wire for boiler burner, and production process thereof | |
| CN110977240A (en) | Welding rod special for 80 kg-grade weathering steel and production method thereof | |
| CN112975208A (en) | Metal-cored welding wire for heat-resistant stainless steel submerged arc welding for magnesium smelting reduction tank | |
| CN107900557B (en) | Sintered flux matched with EQNiCrFe-7 strip surfacing and preparation method thereof | |
| CN109226996B (en) | Electric welding rod for repairing switch welding of austempered steel and preparation method thereof | |
| CN113146096B (en) | Welding strip for nickel-saving high-nitrogen austenitic stainless steel strip electrode surfacing, matched welding agent and preparation method of welding strip | |
| CN117506228B (en) | Efficient composite steel core stainless steel welding rod and preparation method thereof | |
| CN112518173B (en) | High-manganese impact-corrosion-resistant stainless steel welding rod and preparation method thereof | |
| CN112222682B (en) | High-fluorine-alkali type powder, preparation method and self-shielded flux-cored wire | |
| CN109759745B (en) | Welding rod for high-current welding stainless steel pressure container | |
| CN113245748B (en) | 14Cr1MoR matched high-toughness welding electrode for hydrogen-contacting steel | |
| CN110900033B (en) | Gas shielded mineral powder type 314 heat-resistant stainless steel flux-cored wire | |
| CN106514053A (en) | Sintering flux used for stainless steel high-speed electro-slag strip surfacing and preparation method for same | |
| CN112475660A (en) | Wear-resistant surfacing welding electrode and preparation method thereof | |
| CN112059473A (en) | Ultralow-hydrogen type high-alkalinity high-toughness sintered flux | |
| CN115971722A (en) | Welding rod for welding magnesium smelting reduction pot and preparation method thereof | |
| CN114101973B (en) | Alkaline coated stainless steel electrode | |
| CN114101965B (en) | Nickel-chromium-molybdenum corrosion-resistant alloy welding rod and preparation method thereof | |
| CN113579551B (en) | 253MA heat-resistant stainless steel flux-cored wire and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |