CN112958939B - AC/DC high-power blowing cellulose welding rod - Google Patents
AC/DC high-power blowing cellulose welding rod Download PDFInfo
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- CN112958939B CN112958939B CN202110162130.5A CN202110162130A CN112958939B CN 112958939 B CN112958939 B CN 112958939B CN 202110162130 A CN202110162130 A CN 202110162130A CN 112958939 B CN112958939 B CN 112958939B
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/02—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape
- B23K35/0255—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape for use in welding
- B23K35/0261—Rods, electrodes, wires
- 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
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/36—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest
- B23K35/3601—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest with inorganic compounds as principal constituents
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Nonmetallic Welding Materials (AREA)
Abstract
The invention provides an AC/DC high-strength blowing cellulose welding rod, which comprises a welding core and a coating, wherein the coating comprises the following components, by weight, 2-9 parts of rutile, 30-55 parts of microcrystalline fibers, 3-9 parts of carboxymethyl fibers, 3-9 parts of iron sand, 3-9 parts of ilmenite, 3-12 parts of high-carbon ferromanganese, 2-7 parts of titanium carbide, 2-7 parts of titanium dioxide, 5-15 parts of marble and 10-17 parts of magnesium carbonate. The cellulose welding rod can meet the outdoor operation welding requirements of large long-distance pipelines, petroleum pipelines and the like, is easy to deslag, attractive in weld bead forming, capable of ensuring welding electric arc blowing power, single-side welding double-side forming and excellent in welding seam mechanical property, can be used for welding large long-distance pipelines, petroleum pipelines and the like, and can ensure welding quality.
Description
Technical Field
The invention belongs to the technical field of welding materials, and particularly relates to an AC/DC high-strength blowing cellulose welding rod.
Background
The long-distance pipeline is used as a main mode of long-distance oil gas transportation, and the pipeline engineering construction is developed rapidly along with the development of the energy industry and the adjustment of the energy structure in China. The importance of petroleum pipeline engineering can be seen from the construction of engineering such as 'transporting gas from east to west' and 'transporting oil from south to south' from north.
Therefore, for the construction of pipeline welding materials, the pipeline welding technology is a key technology which must be ensured in the construction, and not only is the welding quality, the construction efficiency and the cost of the engineering directly related, but also the safety reliability and the economic benefit during the operation of the pipeline are also influenced. In the construction of long-distance pipelines, the welding of root welding of the pipelines is of great importance, and the quality of the welding quality of the root welding of the pipelines is directly related to the subsequent construction of the pipelines.
The cellulose welding rod is a welding rod for all-position welding of the pipeline, and compared with the traditional welding rod, the welding rod has higher welding efficiency and larger electric arc blowing force stiffness, and can be more suitable for field operation environments.
The strength of the conventional cellulose welding rod is not enough to meet the strength of the current steel pipe, so that the performance and process optimization of the conventional cellulose welding rod are in great tendency.
Disclosure of Invention
In view of this, the invention aims to provide an ac/dc high-power blowing cellulose welding rod, which can meet the outdoor operation welding requirements of large long-distance pipelines, petroleum pipelines and the like, is easy to deslag, attractive in weld bead forming, ensures welding arc blowing power and single-side welding double-side forming, has excellent welding seam mechanical properties, can be used for welding large long-distance pipelines, petroleum pipelines and the like, and can ensure welding quality.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
an AC/DC high-strength blowing cellulose welding rod comprises a welding core and a coating, wherein the coating comprises, by weight, 2-9 parts of rutile, 30-55 parts of microcrystalline fibers, 3-9 parts of carboxymethyl fibers, 3-9 parts of iron sand, 3-9 parts of ilmenite, 3-12 parts of high-carbon ferromanganese, 2-7 parts of titanium carbide, 2-7 parts of titanium dioxide, 5-15 parts of marble and 10-17 parts of magnesium carbonate.
Preferably, the coating comprises, by weight, 3-7 parts of rutile, 35-50 parts of microcrystalline fibers, 4-7 parts of carboxymethyl fibers, 5-7 parts of iron sand, 5-7 parts of ilmenite, 5-10 parts of high-carbon ferromanganese, 3-5 parts of titanium carbide, 3-5 parts of titanium dioxide, 7-12 parts of marble and 12-15 parts of magnesium carbonate.
Preferably, the adhesive used in the coating is high-modulus potassium-sodium water glass, the modulus is 3.0-3.1, and the ratio of potassium to sodium is 1.
Preferably, the core wire is an H08A core wire.
Preferably, the diameter of the core wire is phi 3.2mm.
The invention also provides a method for welding by using the AC/DC high-power blowing-force cellulose welding rod, which adopts DC or AC to weld, and the welding current is 80-110.
The invention also provides the application of the AC/DC high-power blowing cellulose welding rod in the welding of long-distance pipelines or petroleum pipelines.
The invention also provides the application of the AC/DC high-power blowing-force cellulose welding rod in the welding of the steel for the X80 pipeline.
The cellulose is selected from microcrystalline cellulose which is an important component of the cellulose welding rod and is also a material of the gas-forming agent. The addition amount needs to be strictly controlled and is not in the preferable range, and the problems of unqualified blowing force and surface quality of the welding rod can occur.
The addition of carbide is one of the key technologies of the invention, the carbide mainly comprises titanium carbide and high-carbon ferromanganese, the titanium carbide and the high-carbon ferromanganese can be decomposed at high temperature, and part of decomposed carbon can chemically react with oxygen to generate carbon monoxide gas, so that the carbon monoxide gas can play a role in protecting electric arcs. Part of weld metal is improved in weld metal mechanical property. In the invention, a large amount of carbide is added to improve the intensity of the metal cladded by the welding rod and the electric arc blowing force.
The addition of carbonate is one of the innovation points of the invention, because the blowing force of the cellulose welding rod is generally realized by adding a certain amount of fiber, the quality of the fiber generally influences the electric arc blowing force and the process, and if the quality of the fiber is not good, the quality of the product is influenced. In the invention, the gas making is carried out by adding a certain amount of carbonate, so that the cellulose welding rod is not limited to the use of cellulose to improve the magnitude of the electric arc blowing force. 7-12% of marble and 12-15% of magnesium carbonate.
Compared with the prior art, the AC/DC high-power blowing cellulose welding rod has the following advantages:
the AC/DC high-blowing-power cellulose welding rod provided by the invention is added with a large amount of carbonate to improve the arc blowing power of the welding rod, and the mechanical property of a welding seam is ensured by adding carbide. And the better mechanical property of the welding line can be met under the condition of ensuring the electric arc blowing force of the welding rod.
The welding rod is adopted to be matched with X80 grade special pipeline steel for welding, so that the welded welding bead is attractive in forming, the single-side welding double-side forming is guaranteed, the mechanical property after welding meets the requirement of a high-strength plate, the manual maintenance after welding is reduced, the welding rod can be used for welding field operation environmental engineering of petrochemical industry, natural gas, electric systems, large-diameter pipelines and the like, the welding quality can be guaranteed, and the working efficiency is improved.
Detailed Description
Unless defined otherwise, technical terms used in the following examples have the same meanings as commonly understood by one of ordinary skill in the art to which the present invention belongs. 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 raw materials of the welding rod powder are strictly selected and controlled, a strict chemical component range is set for each raw material, the granularity of partial raw materials is controlled (granules are controlled to be vibrated and screened through a sieve, large granules and non-uniform granules are removed), and the granule strength of the welding flux is ensured. In the production process, the whole-process on-line monitoring is carried out, the medicinal powder is prepared and mixed according to a certain proportion, the water glass is added into the auxiliary material mixed powder according to a certain proportion, and the welding rod production is carried out by using the latest production equipment.
(1) The welding rod powder comprises the following raw materials in percentage by weight: (%)
(2) The adhesive is high-modulus potassium-sodium water glass, the modulus is 3.0-3.1, and the ratio of potassium to sodium is 1.
(3) The welding rod is prepared according to the components for detection, and is matched with special steel for a pipeline for ray detection, ultrasonic detection and mechanical property detection according to American Standard AWS A5.1. And (3) welding specification: the welding power supply is direct current or alternating current.
(1) Detecting deposited metal rays: class I
Ultrasonic detection of deposited metal: qualified
(2) The mechanical property of the welding seam is as follows: (vertical downward welding)
Welding was performed using the following conditions:
| welding current A | |
| Direct current | 80-110 |
| Exchange of electricity | 80-110 |
The direct current welding has the following mechanical properties:
the mechanical properties of the alternating current welding are as follows:
(3) the addition amount of the components is within the range of the components of the invention.
Through the welding test, the comprehensive performance of the invention is verified, and the following results are obtained:
(1) The addition of carbide and carbonate in the specified invention range can effectively improve the arc blowing force and mechanical property of the product. If the range is exceeded, the mechanical property, the electric arc blowing force and the process property can not be ensured.
(2) The welding rod of the invention has easy slag removal, beautiful welding bead formation and very excellent processing performance and can realize the double-sided formation of single-sided welding.
(3) The welding flux is a special pipeline backing welding rod, can transfer alloy elements into a welding seam, can effectively supplement the burning loss of the alloy elements in the welding process, and ensures the comprehensive performance of the welding seam.
(4) The welding rod can meet the welding requirements of field operation environmental engineering such as petrochemical industry, natural gas, electric systems, large-diameter pipelines and the like.
And (4) conclusion: the AC/DC high-blowing-force cellulose welding rod has the advantages of high arc blowing force, excellent welding performance, attractive weld joint formation and capability of ensuring welding quality.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (8)
1. The utility model provides an alternating current-direct current's powerful blowing power cellulose welding rod, includes core wire and coating, its characterized in that: the coating comprises, by weight, 2-9 parts of rutile, 30-55 parts of microcrystalline fibers, 3-9 parts of carboxymethyl fibers, 3-9 parts of iron sand, 3-9 parts of ilmenite, 3-12 parts of high-carbon ferromanganese, 2-7 parts of titanium carbide, 2-7 parts of titanium dioxide, 5-15 parts of marble and 10-17 parts of magnesium carbonate.
2. The ac/dc high-blowing-force cellulose welding rod according to claim 1, wherein: the coating comprises, by weight, 3-7 parts of rutile, 35-50 parts of microcrystalline fibers, 4-7 parts of carboxymethyl fibers, 5-7 parts of iron sand, 5-7 parts of ilmenite, 5-10 parts of high-carbon ferromanganese, 3-5 parts of titanium carbide, 3-5 parts of titanium dioxide, 7-12 parts of marble and 12-15 parts of magnesium carbonate.
3. The AC/DC high-power blowing-force cellulose welding rod according to claim 1 or 2, characterized in that: the adhesive used in the coating is high-modulus potassium-sodium water glass, the modulus is 3.0-3.1, and the ratio of potassium to sodium is 1.
4. The AC/DC high-power blowing-force cellulose welding rod according to claim 1 or 2, characterized in that: the core wire is an H08A core wire.
5. The AC/DC high blowing power cellulose welding electrode according to claim 1 or 2, characterized in that: the diameter of the core wire is phi 3.2mm.
6. A method of welding using the ac/dc high power blow cellulose welding electrode of claim 1, characterized in that: welding is carried out by adopting direct current or alternating current, and the welding current is 80-110A.
7. The use of the AC/DC high-power blowing-force cellulose welding rod according to any one of claims 1-5 in welding of long-distance pipelines or petroleum pipelines.
8. The use of the AC/DC high-power blowing-force cellulose welding rod according to any one of claims 1 to 5 in the welding of steel for X80 pipelines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110162130.5A CN112958939B (en) | 2021-02-05 | 2021-02-05 | AC/DC high-power blowing cellulose welding rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110162130.5A CN112958939B (en) | 2021-02-05 | 2021-02-05 | AC/DC high-power blowing cellulose welding rod |
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| Publication Number | Publication Date |
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| CN112958939A CN112958939A (en) | 2021-06-15 |
| CN112958939B true CN112958939B (en) | 2022-12-16 |
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| CN202110162130.5A Active CN112958939B (en) | 2021-02-05 | 2021-02-05 | AC/DC high-power blowing cellulose welding rod |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115464073B (en) * | 2022-10-09 | 2023-08-18 | 泰安众科建材有限公司 | Preparation of high-strength spring steel wire mesh by carbon spring steel wire and spot welding technology |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5940557B2 (en) * | 1977-03-29 | 1984-10-01 | 住友化学工業株式会社 | Manufacturing method of coated arc welding rod |
| JPS60162592A (en) * | 1984-02-03 | 1985-08-24 | Kobe Steel Ltd | High cellulose coated electrode |
| CN101081466A (en) * | 2006-06-01 | 2007-12-05 | 天津市雅联科技发展有限公司 | Novel welding material |
| CN101934442B (en) * | 2010-09-14 | 2012-01-25 | 淄博齐鲁焊业有限公司 | Welding rod |
| CN103273216B (en) * | 2013-05-23 | 2015-08-12 | 武汉铁锚焊接材料股份有限公司 | A kind of Cellulose-Congo red medium |
| CN104708226B (en) * | 2015-02-12 | 2016-08-24 | 西安理工大学 | Carbonization titanium-type self-shield abrasion-proof overlaying welding flux-cored wire and preparation method thereof |
| CN104942465A (en) * | 2015-06-15 | 2015-09-30 | 赵兰 | Carbon steel welding rod and manufacturing method thereof |
| CN104923972A (en) * | 2015-06-23 | 2015-09-23 | 青岛克立克信息技术有限公司 | Stable cellulose electrode |
| CN104923966B (en) * | 2015-06-23 | 2017-04-19 | 山东钢铁股份有限公司 | Low carbon, low silicon and vertically downward electric welding rod and preparation method |
| CN111347191A (en) * | 2018-12-20 | 2020-06-30 | 天津大桥焊材集团有限公司 | High-ferrite high-strength stainless steel welding rod special for LNG storage tank |
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