CN1031670A - Moisture resistant high-tenacity welding electrodes - Google Patents
Moisture resistant high-tenacity welding electrodes Download PDFInfo
- Publication number
- CN1031670A CN1031670A CN 88100122 CN88100122A CN1031670A CN 1031670 A CN1031670 A CN 1031670A CN 88100122 CN88100122 CN 88100122 CN 88100122 A CN88100122 A CN 88100122A CN 1031670 A CN1031670 A CN 1031670A
- Authority
- CN
- China
- Prior art keywords
- glass powder
- resistant high
- electrode coating
- moisture resistant
- welding electrodes
- 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.)
- Withdrawn
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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
- B23K35/36—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
- B23K35/365—Selection of non-metallic compositions of coating materials either alone or conjoint with selection of soldering or welding materials
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Nonmetallic Welding Materials (AREA)
Abstract
A kind of moisture resistant high-tenacity welding electrodes is owing to adopt the new type of electrode coating and reduced B at glass powder
2O
3Content, added TiO with arc-stabilising
2The welding rod of making, thus the toughness of anti-moisture absorption performance of welding rod and weld seam obviously improved.
Description
The present invention is a kind of moisture resistant high-tenacity welding electrodes, adds glass powder in electrode coating, and extrusion becomes welding rod, and glass powder is softening when baking, and forms the moistureproof coverlay of one deck in coating.The present invention improves the anti-moisture absorption of welding rod and the toughness of weld seam by preparation novel glass powder and electrode coating.
Prior art is patent-welding rod of Nai moisture absorption the (number of patent application is clear 48-34295) of being applied for by Japanese kobe steel.The weldering skin coating of this patent and the composition of glass powder are respectively ingredients listed in table 1 and the table 2.
Table 1 composition CaCo
3CaF
2Fe-Mn Fe-Si Ni powder Fe-Mo rutile
% 45 19 4 13 1.5 1 7
Table 2 composition SiO
2Na
2O K
2O Li
2O CaO B
2O
3
% 43.6 19.3 19.5 3.5 3.9 9.1
The glass powder of table 2 ingredients listed is become welding rod by extrusion in the 2-20% adding electrode coating of electrode coating weight.The defective of this Japan Patent is that its glass powder fuses in roasting process more, poor stability, and the fusion processes meeting moisture absorption itself will form more hydrogen atom like this in weld seam in the welding process, produce hydrogen embrittlement, reduced the toughness of weld seam; Because B in the glass powder of this Japan Patent
2O
3Content higher, in molten weldering process, make the skewness of B in the weld seam, thereby reduced the toughness of weld seam.
The present invention adopts novel electrode coating and glass powder to be respectively table 3, table 4 ingredients listed:
Table 3 composition marble fluorite titanium dioxide soda ash ferrosilicon iron powder
% 35 35 3 1 2.5 8
Composition silico-calcium ferrotianium magnalium ferromanganese silica sand glass powder
% 1 7 0.8 6.5 2 5
Composition Ni powder
% 1.3
Table 4 composition SiO
2Na
2O K
2O CaO B
2O
3Li
2O CaF
2
% 30 17.3 20 2.4 6.7 4.8 6
Composition TiO
2
% 6
As shown in table 3, the ratio that adds the glass powder shown in the table 4 in the electrode coating of the present invention is 5% of an electrode coating weight.B in the electrode coating of the present invention
2O
3Content is 6.7%, thereby in roasting process He in the fusion process B is evenly distributed, and prevents the enrichment of B in the weld seam, has improved the toughness of weld seam.Glass powder of the present invention extrusion in adding electrode coating becomes welding rod after 450 ℃ oven dry is melted touches full and uniformly, in electrode coating, form one deck moisture proof coverlay, significantly reduce the content of hydrone, thereby significantly reduce the hydrogen atom concentration in the formed weld seam in the welding process, prevent that weld seam from producing hydrogen embrittlement, improved the toughness of weld seam.The method for preparing welding rod that the present invention is concrete is: at first the powder of the listed glass powder of table 4 is mixed after 900 ℃ of roastings, cooling back porphyrize adds that extrusion becomes welding rod in the electrode coating; At 450 ℃ this welding rod is carried out the oven dry second time, the assurance glass powder can melt full and uniformly and touch.The TiO of adding 6% in glass powder of the present invention
2Can improve the stability of welding arc significantly.
Glass powder of the present invention has good anti-moisture absorption performance.Take by weighing a certain amount of glass powder and put into boiling water and boiled 2 hours, experimental result is that glass powder weight before boiling is 62.43371 grams, and boiling back weight is 62.43060, only dissolves 0.00311 gram, accounts for 0.005% of original weight.Accept the experiment of low temperature charpy impact by welding rod formed weld seam in the welding process that glass powder of the present invention and electrode coating composition are mixed with, its result is: the average low temperature charpy impact value of weld seam is 153J under-40 ℃ of temperature;-60 ℃ of temperature is 115J.Fig. 1 is at dried table 29 ℃, wet table 28 ℃, the moisture absorption condition of relative humidity 80% is carried out the moisture absorption ratio result of experiment to the welding rod of welding rod of the present invention and above-mentioned Japan Patent, curve with the J label among the figure is the welding rod moisture absorption ratio curve of above-mentioned Japan Patent, curve with the C label is the moisture absorption ratio curve of welding rod of the present invention, ordinate a among the figure represents moisture absorption ratio, and abscissa h represents the moisture absorption time.From Fig. 1 as seen, the moisture absorption ratio of welding rod of the present invention is starkly lower than the moisture absorption ratio of the welding rod of above-mentioned Japan Patent.
Claims (2)
1, be added with glass powder in the compositions of surfacing metal of moisture resistant high-tenacity welding electrodes, it is characterized by being mixed with of glass powder and be divided into:
30% SiO
2, 17.3% Na
2O, 20% K
20, 2.4% CaO,
6.7% B
2O
3, 4.8% Li
2O, 6% CaF
2, 6% TiO
2
2,, it is characterized in that electrode coating is made up of following ingredients by the described moisture resistant high-tenacity welding electrodes of claim 1:
35% marble, 35% fluorite, 3% titanium dioxide,
1% soda ash, 2.5% ferrosilicon, 8% iron powder,
1% silico-calcium, 7% ferrotianium, 0.8% magnalium,
6.5% ferromanganese, 2% silica sand, 1% nickel powder,
The ratio that adds the described glass powder of claim 1 in the electrode coating is 5%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88100122 CN1007220B (en) | 1988-01-16 | 1988-01-16 | Moisture resistant high-tenacity welding electrodes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88100122 CN1007220B (en) | 1988-01-16 | 1988-01-16 | Moisture resistant high-tenacity welding electrodes |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1031670A true CN1031670A (en) | 1989-03-15 |
| CN1007220B CN1007220B (en) | 1990-03-21 |
Family
ID=4831188
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88100122 Expired CN1007220B (en) | 1988-01-16 | 1988-01-16 | Moisture resistant high-tenacity welding electrodes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1007220B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101927407A (en) * | 2009-06-19 | 2010-12-29 | 上海大西洋焊接材料有限责任公司 | Carbon steel welding electrode special for steel for boilers and pressure vessels, with low-hydrogen coating |
| CN102059482A (en) * | 2010-11-23 | 2011-05-18 | 陈宏平 | Method for preparing moisture absorption-resistant protective film of welding rod by means of stearic acid microwave reaction |
| CN102189355A (en) * | 2010-03-11 | 2011-09-21 | 上海大西洋焊接材料有限公司 | Special nuclear power welding rod matched with steel plate for AP1000-type pressurized water reactor containment vessel |
| CN105873717A (en) * | 2014-01-07 | 2016-08-17 | 株式会社神户制钢所 | Low-hydrogen type coated arc welding electrode |
| CN108568618A (en) * | 2017-03-07 | 2018-09-25 | 湖北新谛焊接科技有限公司 | The formula and its production technology and device of a kind of electrode coating |
-
1988
- 1988-01-16 CN CN 88100122 patent/CN1007220B/en not_active Expired
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101927407A (en) * | 2009-06-19 | 2010-12-29 | 上海大西洋焊接材料有限责任公司 | Carbon steel welding electrode special for steel for boilers and pressure vessels, with low-hydrogen coating |
| CN102189355A (en) * | 2010-03-11 | 2011-09-21 | 上海大西洋焊接材料有限公司 | Special nuclear power welding rod matched with steel plate for AP1000-type pressurized water reactor containment vessel |
| CN102059482A (en) * | 2010-11-23 | 2011-05-18 | 陈宏平 | Method for preparing moisture absorption-resistant protective film of welding rod by means of stearic acid microwave reaction |
| CN105873717A (en) * | 2014-01-07 | 2016-08-17 | 株式会社神户制钢所 | Low-hydrogen type coated arc welding electrode |
| CN105873717B (en) * | 2014-01-07 | 2018-12-21 | 株式会社神户制钢所 | Low hydrogen system coated electrode |
| CN108568618A (en) * | 2017-03-07 | 2018-09-25 | 湖北新谛焊接科技有限公司 | The formula and its production technology and device of a kind of electrode coating |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1007220B (en) | 1990-03-21 |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C13 | Decision | ||
| GR02 | Examined patent application | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |