CN109514130B - Submerged arc welding flux special for carbon steel strip surfacing and application thereof - Google Patents
Submerged arc welding flux special for carbon steel strip surfacing and application thereof Download PDFInfo
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- CN109514130B CN109514130B CN201811631388.XA CN201811631388A CN109514130B CN 109514130 B CN109514130 B CN 109514130B CN 201811631388 A CN201811631388 A CN 201811631388A CN 109514130 B CN109514130 B CN 109514130B
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- carbon steel
- steel strip
- submerged arc
- carbonate
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/36—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
- B23K35/362—Selection of compositions of fluxes
-
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Nonmetallic Welding Materials (AREA)
Abstract
本发明提供了一种碳钢带极堆焊专用埋弧焊剂及其用途，其埋弧焊剂包括如下重量份数的组分：氧化锆45‑60份、氧化锰13‑15份、氧化镁5‑15份、氧化钠5‑20份、氟化钙1‑5份、氟化钡1‑5份、碳酸盐15‑18份。本发明通过添加碳酸盐，分解产生气体，提高电弧吹力，保证焊缝的平整度，其他氟化物和氧化物有效降低有害元素的含量，减少对冲击韧性的破坏，整体提高焊缝的综合性能。The invention provides a special submerged arc flux for carbon steel strip surfacing welding and use thereof. The submerged arc flux comprises the following components by weight: 45-60 parts of zirconia, 13-15 parts of manganese oxide, and 5 parts of magnesium oxide. -15 parts, sodium oxide 5-20 parts, calcium fluoride 1-5 parts, barium fluoride 1-5 parts, carbonate 15-18 parts. By adding carbonate, the invention decomposes to generate gas, improves the arc blowing force, ensures the flatness of the welding seam, and other fluorides and oxides can effectively reduce the content of harmful elements, reduce the damage to the impact toughness, and improve the overall performance of the welding seam. performance.
Description
Technical Field
The invention belongs to the technical field of submerged arc welding, and particularly relates to a special submerged arc welding flux for carbon steel strip surfacing.
Background
Strip surfacing is used as an economical and rapid process for modifying the surface of a material, and is increasingly widely applied to the manufacturing and repairing of parts in various industrial departments. In order to effectively exert the effect of strip surfacing, the strip surfacing is mainly expected to have a small dilution rate of a base material, high welding cladding efficiency and excellent surfacing layer performance in the welding process.
Disclosure of Invention
In view of the above, the invention aims to provide a submerged arc welding flux special for carbon steel strip surfacing and application thereof, which are characterized in that carbonate is added to decompose and generate gas, so that arc blowing force is improved, flatness of a welding seam is ensured, contents of harmful elements are effectively reduced by other fluorides and oxides, damage to impact toughness is reduced, and comprehensive performance of the welding seam is integrally improved.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a submerged arc welding flux special for carbon steel strip surfacing comprises the following components in parts by weight: 45-60 parts of zirconium oxide, 13-15 parts of manganese oxide, 5-15 parts of magnesium oxide, 5-20 parts of sodium oxide, 1-5 parts of calcium fluoride, 1-5 parts of barium fluoride and 15-18 parts of carbonate.
Preferably, the carbonate includes one or more of potassium carbonate, sodium carbonate and barium carbonate.
Preferably, the carbonate comprises 9-10 parts of potassium carbonate, 3-4 parts of sodium carbonate and 3-4 parts of barium carbonate.
Preferably, 2-4 parts of calcium fluoride and 3-4 parts of barium fluoride, and the sum of the parts by weight of the calcium fluoride and the barium fluoride is 5-8 parts.
Preferably, the total of the parts by weight of magnesium oxide and sodium oxide is 18 to 20 parts.
Preferably, the flux also comprises a binder, wherein the binder is high-modulus potassium-sodium water glass, the addition proportion of the binder is 25 percent of the flux, the modulus is 3-3.1, the ratio of potassium to sodium is 2: 1.
preferably, the steel strip is matched with carbon steel.
Preferably, the particle size of the flux powder is 10-60 meshes.
The submerged arc welding flux for carbon steel strip surfacing is used in welding central bromine air conditioner radiator.
Compared with the prior art, the submerged-arc welding flux special for carbon steel strip surfacing and the application thereof have the following advantages:
(1) the welding flux of the invention has the advantages of easy slag removal, beautiful welding bead forming and excellent processing performance.
(2) The welding flux is a special sintered welding flux, 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.
(3) The flux can meet the welding requirement of the bromine central air-conditioning radiator, and the radial and ultrasonic detection and the air tightness detection of the flux are qualified.
And (3) analyzing the components of the formula:
the magnesium oxide and the sodium oxide have the functions of ensuring the stability of welding electric arc, forming a reducing atmosphere around the electric arc, preventing harmful gases such as water vapor, carbon dioxide, nitrogen and the like in the air from entering deposited metal, uniformly covering the surface of weld metal with generated welding slag, slowing down the cooling speed of the weld metal, obtaining good weld formation, ensuring that the slag has proper melting point, viscosity and density, forming slag crust under the high-temperature action of the electric arc, and performing a series of chemical metallurgical reactions to remove oxide, sulfur, phosphorus and other harmful impurities.
The addition of calcium fluoride and barium fluoride is a key technology of the invention, the calcium fluoride can be combined with hydrogen in the welding seam to form hydrogen fluoride gas to overflow, which is beneficial to reducing the partial pressure of hydrogen in the arc atmosphere, thereby playing a dehydrogenation role, reducing the content of harmful element hydrogen in the welding seam and reducing the generation of hydrogen-induced cracks; barium fluoride has a strong slag thinning effect, can increase the fluidity of a molten pool, ensures that a welding line is attractive in appearance under large parameters, needs a proper content, has insufficient slag thinning capability if the content is too small, and easily causes the reduction of the stability of an electric arc if the content is too large. The adding content of the calcium fluoride is 1-5 parts, preferably 2-4 parts; the amount of barium fluoride added is 1 to 5 parts, preferably 3 to 4 parts.
The carbonate is the innovation point of the invention, and can be used for generating gas by high-temperature decomposition of the carbonate in the welding process of the welding line by adding the carbonate, thereby improving the electric arc blowing force, ensuring the fluidity of molten iron and improving the flatness of the welding line. In the present invention, the carbonate content is 15 to 18 parts by weight.
Tests show that the granularity of the welding flux has great influence on the stability of the electric arc in the welding process, the welding process is stable by ensuring the uniformity of the welding granularity, and excellent welding seam forming is further obtained. In the present invention, the particle size of the flux is 10 to 60 mesh.
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 preparation method of the welding flux comprises the following steps: the powder is prepared and mixed according to a certain proportion, the water glass is added into the mixed powder according to the weight proportion of 25 percent, and the mixed powder is prepared into the welding flux with uniform granularity by using spiral welding flux production equipment.
Example 1:
(1) the flux powder comprises the following raw materials in parts by weight: (parts by weight/kg)
| Zirconium oxide | Manganese oxide | Magnesium oxide | Sodium oxide | Potassium carbonate | Sodium carbonate | Barium carbonate | Calcium fluoride | Barium fluoride |
| 50 | 13 | 8 | 11 | 3 | 5 | 7 | 2 | 4 |
(2) The adhesive is high-modulus potassium-sodium water glass with the modulus of 3.0-3.1 and the ratio of potassium to sodium of 2: 1.
(3) The submerged arc welding flux is prepared according to the components for detection, and the detection of rays, ultrasonic detection, air tightness detection and lap margin is carried out by matching with a carbon steel strip H04D according to the regulation of the national standard GB/T12470-2003 standard. And (3) welding specification: the welding power supply is in direct current reverse connection, the welding heat input is 18-19KJ/cm, and the inter-channel temperature is 145-.
Flux type: and (3) active flux.
S/P content of the flux: (in weight percent)
| Item | S | P |
| Guaranteed value (%) | ≤0.035 | ≤0.040 |
| Example value (%) | 0.020 | 0.023 |
Thirdly, detecting deposited metal rays: class I
Ultrasonic detection of deposited metal: qualified
Weld airtightness detection (6 atmospheres): qualified
Fifthly, lap allowance: 3mm
Example 2:
the flux powder comprises the following raw materials in parts by weight: (parts by weight/kg)
| Zirconium oxide | Manganese oxide | Magnesium oxide | Sodium oxide | Potassium carbonate | Sodium carbonate | Barium carbonate | Calcium fluoride | Barium fluoride |
| 55 | 14 | 10 | 7 | 6 | 6 | 5 | 3 | 3 |
(2) The adhesive is high-modulus potassium-sodium water glass with the modulus of 3.0-3.1 and the ratio of potassium to sodium of 2: 1.
(3) The submerged arc welding flux is prepared according to the components for detection, and chemical component analysis and deposited metal mechanical property test are carried out by matching with a carbon steel strip H04D according to the regulation of the national standard GB/T12470-2003 standard. And (3) welding specification: the welding power supply is in direct current reverse connection, the welding heat input is 18-19KJ/cm, and the inter-channel temperature is 145-.
Flux type: and (3) active flux.
S/P content of the flux:
thirdly, detecting deposited metal rays: class I
Ultrasonic detection of deposited metal: qualified
Weld airtightness detection (6 atmospheres): qualified
Fifthly, lap allowance: 3.3mm
Example 3:
the flux powder comprises the following raw materials in parts by weight: (parts by weight/kg)
| Zirconium oxide | Manganese oxide | Magnesium oxide | Sodium oxide | Potassium carbonate | Sodium carbonate | Barium carbonate | Calcium fluoride | Barium fluoride |
| 58 | 15 | 12 | 8 | 6 | 8 | 4 | 3 | 4 |
(2) The adhesive is high-modulus potassium-sodium water glass with the modulus of 3.0-3.1 and the ratio of potassium to sodium of 2: 1.
(3) The submerged arc welding flux is prepared according to the components and is detected, and chemical component analysis and deposited metal mechanical property test are carried out according to the regulation of the national standard GB/T12470-2003 standard and the carbon steel welding strip H04D. And (3) welding specification: the welding power supply is in direct current reverse connection, the welding heat input is 18-19KJ/cm, and the inter-channel temperature is 145-.
Flux type: and (3) active flux.
S/P content of the flux:
| item | S | P |
| Guaranteed value (%) | ≤0.035 | ≤0.040 |
| Example value (%) | 0.021 | 0.028 |
Thirdly, detecting deposited metal rays: class I
Ultrasonic detection of deposited metal: qualified
Weld airtightness detection (6 atmospheres): qualified
Fifthly, lap allowance: 3mm
Through the welding test, the comprehensive performance of the invention is verified, and the following results are obtained:
and (4) conclusion: the submerged-arc welding flux special for carbon steel strip surfacing has excellent welding performance, attractive weld joint formation and no overlap margin exceeding 5 mm. Can be applied to the project of bromine central air-conditioning radiators. The welding quality can be ensured.
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 (9)
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811631388.XA CN109514130B (en) | 2018-12-29 | 2018-12-29 | Submerged arc welding flux special for carbon steel strip surfacing and application thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811631388.XA CN109514130B (en) | 2018-12-29 | 2018-12-29 | Submerged arc welding flux special for carbon steel strip surfacing and application thereof |
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| Publication Number | Publication Date |
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| CN109514130A CN109514130A (en) | 2019-03-26 |
| CN109514130B true CN109514130B (en) | 2021-05-18 |
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| CN201811631388.XA Active CN109514130B (en) | 2018-12-29 | 2018-12-29 | Submerged arc welding flux special for carbon steel strip surfacing and application thereof |
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Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0288481A (en) * | 1988-09-21 | 1990-03-28 | Kawasaki Refract Co Ltd | Protective composition for refractory of vessel for molten metal |
| CN1238154C (en) * | 2001-09-17 | 2006-01-25 | 宝山钢铁股份有限公司 | Sintering-flux for build-up welding of continuous casting roller and production method thereof |
| CN102601544B (en) * | 2012-03-21 | 2014-03-26 | 宝鸡市宇生焊接材料有限公司 | High-alkalinity high-tenacity low-hydrogen agglomerated flux and preparation method thereof |
| CN103753046A (en) * | 2014-01-15 | 2014-04-30 | 四川大西洋焊接材料股份有限公司 | Welding flux for carbon steel submerged arc strip surfacing and preparation method for welding flux |
| CN105269179B (en) * | 2015-10-21 | 2017-08-18 | 锦州澳林康天鹅焊材有限公司 | A kind of strip surfacing sintered flux used for submerged arc welding |
| KR102118897B1 (en) * | 2016-03-08 | 2020-06-04 | 닛폰세이테츠 가부시키가이샤 | Flux cored wire, manufacturing method of welding joint and welding joint |
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