CN117484006B - Modified titanium-calcium type coated surfacing welding electrode and preparation method thereof - Google Patents
Modified titanium-calcium type coated surfacing welding electrode and preparation method thereof Download PDFInfo
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- CN117484006B CN117484006B CN202410001664.3A CN202410001664A CN117484006B CN 117484006 B CN117484006 B CN 117484006B CN 202410001664 A CN202410001664 A CN 202410001664A CN 117484006 B CN117484006 B CN 117484006B
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- 238000003466 welding Methods 0.000 title claims abstract description 51
- JTCFNJXQEFODHE-UHFFFAOYSA-N [Ca].[Ti] Chemical class [Ca].[Ti] JTCFNJXQEFODHE-UHFFFAOYSA-N 0.000 title claims abstract description 25
- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- 239000000843 powder Substances 0.000 claims abstract description 106
- 239000011248 coating agent Substances 0.000 claims abstract description 44
- 238000000576 coating method Methods 0.000 claims abstract description 44
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 16
- 239000000956 alloy Substances 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims abstract description 10
- 239000000314 lubricant Substances 0.000 claims abstract description 5
- 239000002344 surface layer Substances 0.000 claims abstract description 3
- 239000011230 binding agent Substances 0.000 claims description 10
- 229910052799 carbon Inorganic materials 0.000 claims description 10
- 239000004579 marble Substances 0.000 claims description 9
- 239000010445 mica Substances 0.000 claims description 9
- 229910052618 mica group Inorganic materials 0.000 claims description 9
- 239000005995 Aluminium silicate Substances 0.000 claims description 7
- 239000004113 Sepiolite Substances 0.000 claims description 7
- 235000012211 aluminium silicate Nutrition 0.000 claims description 7
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 7
- 229910052624 sepiolite Inorganic materials 0.000 claims description 7
- 235000019355 sepiolite Nutrition 0.000 claims description 7
- 229910000604 Ferrochrome Inorganic materials 0.000 claims description 5
- 229910000616 Ferromanganese Inorganic materials 0.000 claims description 5
- 229910001309 Ferromolybdenum Inorganic materials 0.000 claims description 5
- 229910000519 Ferrosilicon Inorganic materials 0.000 claims description 5
- 229920002472 Starch Polymers 0.000 claims description 5
- 239000010433 feldspar Substances 0.000 claims description 5
- DALUDRGQOYMVLD-UHFFFAOYSA-N iron manganese Chemical compound [Mn].[Fe] DALUDRGQOYMVLD-UHFFFAOYSA-N 0.000 claims description 5
- 238000004806 packaging method and process Methods 0.000 claims description 5
- BITYAPCSNKJESK-UHFFFAOYSA-N potassiosodium Chemical group [Na].[K] BITYAPCSNKJESK-UHFFFAOYSA-N 0.000 claims description 5
- 235000019353 potassium silicate Nutrition 0.000 claims description 5
- 239000008107 starch Substances 0.000 claims description 5
- 235000019698 starch Nutrition 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 5
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 15
- 238000005187 foaming Methods 0.000 abstract description 7
- 230000008569 process Effects 0.000 abstract description 6
- 238000007765 extrusion coating Methods 0.000 abstract description 4
- 229910052751 metal Inorganic materials 0.000 abstract description 4
- 239000002184 metal Substances 0.000 abstract description 4
- 230000035699 permeability Effects 0.000 abstract description 3
- 239000002131 composite material Substances 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 12
- 238000002156 mixing Methods 0.000 description 9
- 239000002245 particle Substances 0.000 description 7
- 210000003491 skin Anatomy 0.000 description 5
- 239000003814 drug Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 235000013350 formula milk Nutrition 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- 239000011812 mixed powder Substances 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 238000010924 continuous production Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 210000002615 epidermis Anatomy 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000009472 formulation Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 235000020610 powder formula Nutrition 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000007605 air drying Methods 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 239000008199 coating composition Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000006223 plastic coating Substances 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000011265 semifinished product Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000005491 wire drawing Methods 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
- B23K35/02—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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Nonmetallic Welding Materials (AREA)
Abstract
The invention provides a modified titanium-calcium type flux-cored surfacing electrode and a preparation method thereof, wherein the surfacing electrode comprises a core wire and medicinal powder coated on the surface layer of the core wire, and the medicinal powder comprises the following components in percentage by mass: the composite material consists of the following components in parts by weight: alloy powder: 65-75 parts; slip powder: 3-6 parts; plastic powder: 10-15 parts of a lubricant; ore powder: 10-15 parts of surfacing welding electrode is prepared by a spiral electrode powder coater. The invention optimizes the extrusion coating property to solve the rough surface problem of the finished welding rod, ensures the air permeability of the surface to reduce the foaming rate, reduces the surface tension by the screw extrusion coating, enhances the baking stability to reduce the tendency of capillary cracks, ensures the effective protection of the deposited metal by the coating in the welding process, and reduces the baking time and the baking temperature along with the adjustment of the coating components to save the production cost.
Description
Technical Field
The invention belongs to the technical field of surfacing welding electrodes, and particularly relates to a modified titanium-calcium type coated surfacing welding electrode and a preparation method thereof.
Background
The titanium-calcium type flux-cored welding electrode is often applied to equipment such as a bucket, a stirrer blade, a gear bearing, mining machinery and the like due to the excellent wear resistance. The traditional production process of the titanium-calcium type coating surfacing welding electrode is oil press extrusion coating production, the production quality defects are mostly thick and baking crack foaming of the electrode skin, the titanium-calcium type coating is mixed with the coating production, the forming explosive group is soft, the production extrusion coating pressure is high, the chemical mixing process adopts high-modulus potassium sodium 2:1 alkali, powder stirring is not easy to force up, the continuous powder propelling pressure can reach 13-15MPa conventionally, the surface tension of coating molecules is overlarge, the baking process is easy to release stress to form local capillary cracks, the welding is easy to cause the coating to fall off, a molten pool cannot be effectively protected, the welding electrode forms a compact outer skin in the high-pressure coating pressure process, baking gas cannot penetrate and overflow to cause foaming problem, the appearance of the welding electrode is poor, the one-step forming rate is improved, the formula and the production processing process of the welding electrode are required to be innovated, and the brand competitiveness is improved.
At present, the existing spiral powder coating machine is equipment for producing spiral acid welding rods, and press coating of surfacing welding electrodes cannot be achieved, because the spiral powder coating machine is small in pressure, non-dispersive in powder mixing forming, difficult in powder feeding and difficult in powder ejection, and causes quality problems such as broken heads, thick surfaces, scratches and the like, and baking cracks and potential foaming risks are caused by fine powder.
Disclosure of Invention
In view of the above, the invention aims to overcome the defects in the prior art and provides a modified titanium-calcium type coated surfacing welding electrode and a preparation method thereof.
In order to achieve the above purpose, the technical scheme of the invention is realized as follows:
the invention provides a modified titanium-calcium type flux-cored surfacing electrode, which comprises a core wire and powder coated on the surface layer of the core wire, wherein the powder consists of the following components in parts by weight:
alloy powder: 65-75 parts;
slip powder: 3-6 parts;
plastic powder: 10-15 parts of a lubricant;
ore powder: 10-15 parts of a lubricant;
wherein the alloy powder comprises rutile, high-carbon ferrochrome, ferrosilicon alloy, medium-carbon ferromanganese and ferromolybdenum; the sliding powder comprises mica powder; the plastic powder comprises kaolin, sepiolite and starch; the ore powder includes feldspar and marble.
Preferably, the alloy powder comprises the following components in parts by mass: 30-40 parts of rutile, 15-20 parts of high-carbon ferrochrome, 5-10 parts of ferrosilicon alloy, 5-10 parts of medium-carbon ferromanganese and 1-2 parts of ferromolybdenum.
Preferably, the plastic powder comprises the following components in parts by mass: 4-8 parts of kaolin, 1-4 parts of sepiolite and 1-4 parts of starch.
Preferably, the ore powder comprises the following components in parts by mass: 6-12 parts of feldspar and 2-6 parts of marble.
Preferably, the particle size of the medicinal powder is between 20 meshes and 60 meshes.
Preferably, the particle size of the mica powder is 40 mesh and the particle size of the marble is 60 mesh.
Aiming at the problems existing in the prior art, the formula of the medicinal powder is adjusted as follows:
(1) The powder formula reduces the ratio of the alloy powder, and prevents the alloy powder from friction heating in the spiral sleeve and affecting the powder mixing forming effect.
(2) The powder formula of the invention increases the slip and the plastic powder ratio and ensures the press coating stability of the spiral powder coating machine.
(3) The powder of the invention improves the granularity, is easy to be forced when being added with water glass, ensures the air permeability of the powder, ensures the granularity of the powder to be not lower than 60 meshes, and ensures the apparent smoothness of the coating, and ensures the maximum upper limit to be not higher than 20 meshes.
The invention can use a spiral powder coating machine to prepare the modified titanium-calcium type coating surfacing electrode on the premise of optimizing the composition and the proportion of the powder, and the specific preparation method comprises the following steps:
s1, preparing a welding core and powder respectively, and adding a binder into the powder;
s2, coating the powder on the surface of the welding core by a spiral powder coating machine to obtain a semi-finished welding rod;
s3, baking the semi-finished welding rod, and packaging for later use after the surface is baked and shaped.
Preferably, the working pressure of the spiral powder coating machine is 32-39MPa, and the working frequency is 50-60HZ.
Preferably, the addition amount of the binder in the step S1 is 19-23%, the addition time of the binder is 90-120S, and the stirring time of the binder and the powder is 10-15min.
Preferably, the binder is sodium potassium water glass with a modulus M of 2.40-2.60 and a concentration Be degree of 40-42.
Preferably, the welding core is sent into a spiral powder coating machine by a wire feeder, and the rotating speed of a main shaft of the wire feeder is 950-1000 revolutions per minute; the wire feeding frequency is 55-60HZ, and the wire feeding number is 800+/-10 wires/min.
The modified titanium-calcium type flux-cored surfacing welding electrode has the following advantages:
(1) The invention optimizes the plastic coating performance to solve the rough surface problem of the finished welding rod, ensures the air permeability of the surface to reduce the foaming rate, reduces the surface tension by using a spiral powder coating machine for coating, enhances the baking stability to reduce the tendency of capillary cracks, ensures the effective protection of the deposited metal by the coating in the welding process, and saves the production cost along with the adjustment of the coating components, the baking time and the baking temperature.
(2) The invention adjusts the formula from the above aspects to optimize to the spiral press coating, can greatly improve the production efficiency (taking surfacing welding electrode with the specification of 3.2mm as an example, the continuous production capacity is increased from 31 t/day to 52.2 t/day), reduce the baking unit consumption, improve the product quality and reduce the production cost.
Drawings
FIG. 1 is a flow chart of the production process of the titanium-calcium type surfacing electrode;
FIG. 2 is a comparison photograph of capillary crack conditions of the titanium calcium type surfacing electrode prepared in comparative example 4 and example 1;
FIG. 3 is a comparative photograph showing the skin foaming of the titanium calcium type surfacing electrode prepared in comparative example 1 and example 1.
Detailed Description
Unless defined otherwise, technical terms used in the following examples have the same meaning as commonly understood by one of ordinary skill in the art to which the inventive concepts pertain. The test reagents used in the following examples, unless otherwise specified, are all conventional biochemical reagents; the experimental methods are conventional methods unless otherwise specified.
The present invention will be described in detail with reference to examples.
The invention provides a modified titanium calcium type flux-cored surfacing welding electrode which consists of a core wire which is coated with medicinal powder in a pressing mode, wherein the medicinal powder comprises the following components: rutile, high-carbon ferrochrome, feldspar, ferrosilicon alloy, medium-carbon ferromanganese, kaolin, white mud, mica powder, marble, sepiolite, fine mica powder, starch and ferromolybdenum. Multiple sets of examples and comparative examples were set according to different formulations of the powder, and the formulations of the powder of examples and comparative examples are shown in table 1. The particle size of the mica powder in the examples was 40 mesh, the particle size of the marble was 60 mesh, the particle size of the other powders was 40 mesh, and the particle sizes of the marble powder and mica powder in comparative example 4 were 80 mesh.
The preparation process of the modified titanium calcium type coated surfacing welding electrode is shown in figure 1, and the specific preparation method comprises the following steps:
s1: and (3) raw material treatment: the H08A wire rod is used for mechanically peeling and deoxidizing the iron oxide sheet, so that the smoothness of the surface of the wire rod is ensured to be free of impurities;
s2: wire drawing: linearly drawing the wire rod to a standard wire diameter through a roller die five-connecting tank, and polishing and cooling through a sizing die;
s3: shredding: cutting the cutter disc into required length by using a high-speed filament cutter to finish the production of a semi-finished product welding core;
s4: powder preparation: mixing the components of the medicinal powder, uniformly mixing to obtain mixed powder, and pouring the mixed powder into a temporary storage area of a medicine stirring pot;
s5: mixing the medicines: adding potassium sodium water glass with the modulus M of 2.60 and the concentration Be of 40 into a medicine mixing pot, wherein the time for adding the potassium sodium water glass is set to 120s, and the medicine mixing time is set to 20min;
s6: wire feeding and spiral press coating: conveying the semi-finished welding core to a spiral powder coating machine through a wire feeder, adjusting the pressure of the spiral powder coating machine to 39MPa and the frequency to 60HZ, and completing spiral forming to obtain a semi-finished welding rod; the spindle speed of the wire feeder is 1000 revolutions per minute, the wire feeding frequency is 60HZ, and the number of wires fed is 800 wires per minute.
S7: baking: conveying the semi-finished welding rod to a baking furnace through a chain furnace, wherein the baking temperature is 140+/-10 ℃, and the drying and shaping of the surface skin are completed after 30 minutes of the semi-finished welding rod are shared;
s8: and (3) packaging: and (5) feeding the welding rods out of the baking furnace into an automatic packaging production line to finish the boxing and plastic packaging of the finished welding rods.
Table 1 electrode coating formulation
Welding experiments are carried out on the welding rods prepared in the examples and the comparative examples, and welding technological parameters are as follows: current flow: 120-280A; layer temperature: 130-150 ℃; layer number: 10-12 layers, the chemical composition and hardness properties of the weld metal are shown in Table 2.
TABLE 2 deposited metal chemistry, hardness Properties
In comparative example 1, the addition amount of alloy powder is not reduced, the influence of the stirring and heating of the spiral sleeve on the powder molding effect is verified, and the more the alloy powder accounts for, the higher the overall molding temperature of the powder is, the temperature exceeds 50 ℃, the air drying of the surface skin is too fast, and the press coating effect is uncontrollable;
in comparative example 2, the addition amount of the sliding powder is not increased, and according to the press coating effect, the reduction of the press coating of the screw machine along with the reduction of the sliding powder, the reduction of the feeding stability of the screw machine, the discontinuous press coating of the top coating when the feeding stability is reduced to 2 parts or below, and the optimal ratio of the top coating is 3-4 parts;
the comparative example 3 shows that the addition amount of the plastic powder is not increased, and the addition range of the plastic powder is 10-15 parts along with the increase of the plastic powder in the production process, so that the abrasion of the epidermis is reduced;
comparative example 4 shows that the powder granularity is not improved, the finer the powder granularity is, the more easily capillary cracks are generated after baking the finished welding rod, the coarser the granularity is, the loose integral epidermis is easily caused, and the optimal granularity range of the powder is 20-60 meshes;
the comparative example 5 is that white clay and fine mica powder in plastic powder replace kaolin and sepiolite, the powder molding state can show that the former has strong intermolecular adsorption force, is easy to agglomerate and aggregate, the uniformity of reamer mixing is poor, the alkali consumption of the kaolin and sepiolite powder is small, and the mixed powder is loose and easy to convey.
The invention can meet the production of a spiral powder coating machine by reasonably adjusting the press coating performance of the welding rod, and the data in the table 2 can be seen as follows:
(1) The titanium-calcium type surfacing electrode produced by using the spiral powder coating machine has better press coating performance and appearance of the finished electrode in examples 1-5, and the baking capillary crack and foaming quality problem of the electrode are improved greatly.
(2) On the premise of ensuring the chemical components of the surfacing electrode, the ratio of the surfacing electrode to the standard range is prepared, and the finished welding electrode of examples 1-5 has better technological performance hardness (standard hardness is more than or equal to 50).
(3) The titanium-calcium type surfacing welding electrode produced by the spiral welding electrode powder coating machine can realize doubling of continuous production capacity, reduce labor cost, and save baking energy consumption by nearly 50 percent.
The above embodiments are merely preferred embodiments of the present invention and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A modified titanium calcium type coating surfacing welding electrode is characterized in that: the surfacing welding electrode comprises a welding core and medicinal powder coated on the surface layer of the welding core, wherein the medicinal powder comprises the following components in parts by weight:
alloy powder: 65-75 parts;
slip powder: 3-6 parts;
plastic powder: 10-15 parts of a lubricant;
ore powder: 10-15 parts of a lubricant;
wherein the alloy powder comprises rutile, high-carbon ferrochrome, ferrosilicon alloy, medium-carbon ferromanganese and ferromolybdenum; the sliding powder comprises mica powder, and the granularity of the mica powder is 40 meshes; the plastic powder comprises kaolin, sepiolite and starch; the ore powder comprises feldspar and marble;
the alloy powder comprises the following components in parts by weight: 30-40 parts of rutile, 15-20 parts of high-carbon ferrochrome, 5-10 parts of ferrosilicon alloy, 5-10 parts of medium-carbon ferromanganese and 1-2 parts of ferromolybdenum;
the plastic powder comprises the following components in parts by weight: 4-8 parts of kaolin, 1-4 parts of sepiolite and 1-4 parts of starch;
the ore powder comprises the following components in parts by mass: 6-12 parts of feldspar and 2-6 parts of marble.
2. The modified titanium-calcium type flux-cored surfacing electrode according to claim 1, wherein: the granularity of other components in the medicinal powder is between 20 meshes and 60 meshes.
3. The modified titanium-calcium type flux-cored surfacing electrode as defined in claim 2, wherein: the granularity of the marble is 60 meshes.
4. The method for preparing the modified titanium-calcium type flux-cored surfacing electrode as defined in claim 3, which is characterized by comprising the following steps: the preparation method comprises the following steps:
s1, preparing a welding core and powder respectively, and adding a binder into the powder;
s2, coating the powder on the surface of the welding core by a spiral powder coating machine to obtain a semi-finished welding rod;
s3, baking the semi-finished welding rod, and packaging for later use after the surface is baked and shaped.
5. The method for preparing the modified titanium-calcium type flux-cored surfacing electrode according to claim 4, which is characterized in that: the working pressure of the spiral powder coating machine is 32-39MPa, and the working frequency is 50-60HZ.
6. The method for preparing the modified titanium-calcium type flux-cored surfacing electrode according to claim 4, which is characterized in that: the adding amount of the binder in the step S1 is 19-23%, the adding time of the binder is 90-120S, the stirring time of the binder and the powder is 10-15min, the binder is potassium sodium water glass with the modulus M of 2.40-2.60 and the concentration Be degree of 40-42.
7. The method for preparing the modified titanium-calcium type flux-cored surfacing electrode according to claim 4, which is characterized in that: the welding core is sent into a spiral powder coating machine by a wire feeder, and the rotating speed of a main shaft of the wire feeder is 950-1000 revolutions per minute; the wire feeding frequency is 55-60HZ, and the number of the wires fed is 800+/-10.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB271209A (en) * | 1926-03-29 | 1927-05-26 | Bertrand Turner | Improvements in the manufacture of electrodes, welding rods and the like |
| CN1188033A (en) * | 1997-01-15 | 1998-07-22 | 珠海市万达焊条有限公司 | Small diameter electric welding rod for middle or small bore pipeline backing weld |
| CN105798483A (en) * | 2016-06-07 | 2016-07-27 | 河南职业技术学院 | Welding electrode coating and method of preparing same into welding electrode |
| CN107088718A (en) * | 2016-02-18 | 2017-08-25 | 成都红宇时代科技有限公司 | A kind of low-alloy steel welding rod |
| CN110877170A (en) * | 2019-12-04 | 2020-03-13 | 河海大学常州校区 | Surfacing electrode, preparation method and dredging reamer abrasion repair surfacing method |
| CN115846940A (en) * | 2022-12-26 | 2023-03-28 | 山东聚力焊接材料有限公司 | Welding rod for repairing cold-work die and preparation method thereof |
-
2024
- 2024-01-02 CN CN202410001664.3A patent/CN117484006B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB271209A (en) * | 1926-03-29 | 1927-05-26 | Bertrand Turner | Improvements in the manufacture of electrodes, welding rods and the like |
| CN1188033A (en) * | 1997-01-15 | 1998-07-22 | 珠海市万达焊条有限公司 | Small diameter electric welding rod for middle or small bore pipeline backing weld |
| CN107088718A (en) * | 2016-02-18 | 2017-08-25 | 成都红宇时代科技有限公司 | A kind of low-alloy steel welding rod |
| CN105798483A (en) * | 2016-06-07 | 2016-07-27 | 河南职业技术学院 | Welding electrode coating and method of preparing same into welding electrode |
| CN110877170A (en) * | 2019-12-04 | 2020-03-13 | 河海大学常州校区 | Surfacing electrode, preparation method and dredging reamer abrasion repair surfacing method |
| CN115846940A (en) * | 2022-12-26 | 2023-03-28 | 山东聚力焊接材料有限公司 | Welding rod for repairing cold-work die and preparation method thereof |
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| CN117484006A (en) | 2024-02-02 |
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