CN1055893A - Reduced ilmenite type of high efficient iron powder electrode - Google Patents
Reduced ilmenite type of high efficient iron powder electrode Download PDFInfo
- Publication number
- CN1055893A CN1055893A CN 91104190 CN91104190A CN1055893A CN 1055893 A CN1055893 A CN 1055893A CN 91104190 CN91104190 CN 91104190 CN 91104190 A CN91104190 A CN 91104190A CN 1055893 A CN1055893 A CN 1055893A
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- China
- Prior art keywords
- welding
- reduced ilmenite
- present
- iron powder
- rutile
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Abstract
The present invention is a kind of high efficiency fe powder covered electrode.Mainly be applicable to welding common low carbon steel construction.Its principal character is the TiO in chemical composition of coating
2, replace the natural rutile or the synthetic rutile of traditional usefulness with reduced ilmenite.Because the price of reduced ilmenite is far below natural or synthetic rutile, so the cost of welding rod of the present invention obviously reduces remarkable in economical benefits.In addition, the welding technological properties of welding rod of the present invention is good, and it is few to splash, and powder amount is little, and deposition efficiency is more than 145%; Two kinds of power supplys of alternating current-direct current be can adopt, downhand welding, flat fillet weld and horizontal fillet welding are applicable to.
Description
The invention belongs to welding material.Mainly be applicable to welding common low carbon steel construction.
In order to improve welding efficiency, both at home and abroad all at the development and application high efficiency fe powder covered electrode.When the deposition efficiency of welding rod 140% when above, because the increase and the minimizing of auxiliary labor time of deposited amount can make welding labor productivity be enhanced about more than once.At present, titanium oxide type high efficiency fe powder covered electrode is used very extensive.As the raw material of titanium oxide, the external natural rutile (TiO that adopt more
2〉=95%), domestic except that adopting natural rutile, also adopt synthetic rutile (TiO
2〉=85%), but no matter be natural or artificial rutile, its cost is all higher.In the described high efficiency low dust iron powder welding electrode of Chinese patent CN85107951, contain TiO
215～30%, as TiO
2Raw material mainly adopt rutile etc.The welding technological properties of this welding rod is good, and powder amount is low, the welding efficiency height, but that weak point also is the cost of welding rod is higher.
The object of the present invention is to provide a kind of not only welding technological properties good, powder amount is low, welding efficiency height, and the low high efficiency fe powder covered electrode of cost.
Its main technical schemes is to adopt the raw material of reduced ilmenite as titanium oxide.TiO in the reduced ilmenite
2〉=50%, FeO＜9%.
The reduced ilmenite that is added is 30～45%, after the conversion, contains TiO
215～20%, Fe6～10%, so FeO2～5% is TiO in the coating
2The total amount of content and Fe (summation of the Fe that is comprised in iron powder and the reduced ilmenite) is suitable with the described welding rod of Chinese patent CN85107951, and other composition difference is little.Slightly different is that FeO content is higher, and along with the increase of FeO, the basicity of slag increases, and helps improving the toughness of weld metal; But the oxidisability of slag also increases.For guaranteeing abundant deoxidation and welding seam alloying, correspondingly increase the content of Fe-Mn in the coating.Because basic anhydride FeO increases, and can correspondingly reduce the amount of the carbonate that contains basic anhydride, this favourable reduction welding rod powder amount.For guaranteeing welding technological properties, after FeO, carbonate equal size change slightly, also to suitably adjust ZrO
2, Al
2O
3Deng content, make viscosity, flowability and the surface tension etc. of slag be in suitable scope, characteristics such as it is little to splash when guaranteeing welding, and it is easy to take off slag, and it is attractive in appearance to be shaped, and restarting is good.
In sum, the chemical composition of coating of high efficiency fe powder covered electrode of the present invention (weight %) is: reduced ilmenite 30～45%, CaCO
3, MgCO
3, BaCO
3In any one or two kinds of above sums＜8%, SiO
2＜10%, Al
2O
3＜6%, ZrO
2＜5%, Fe-Mn4～12%, any one or two kinds of sums＜5% among Fe-Si or the Fe-Ti, iron powder＞35%.Core wire of the present invention adopts low-carbon steel core,, as bonding agent the coating of mentioned component scope is coated on the low-carbon steel core with waterglass, promptly makes reduced ilmenite type of high efficient iron powder electrode.
Welding rod of the present invention can adopt two kinds of power supplys of alternating current-direct current, is applicable to downhand welding, flat fillet weld and horizontal fillet welding.The deposition efficiency of welding rod is more than 145%, the welding productivity height.
The price of reduced ilmenite is far below the price of natural or synthetic rutile, so the cost of welding rod of the present invention obviously reduces.In addition, also containing 20% iron in the reduced ilmenite, also is the key factor that improves welding efficiency.Compare with the rutile-type welding rod, reaching under the prerequisite of same deposition efficiency, when adopting reduced ilmenite, the addition of iron powder can reduce 6～10%, and this has also correspondingly reduced the welding rod cost.
Welding rod of the present invention is compared with the cost estimation of patent CN85107951 welding rod, and the raw material that influence the cost maximum have rutile, reduced ilmenite, iron powder and Fe-Mn.Because coating is thicker, produces one ton of welding rod and need about 600 kilograms of coating material.By estimation, 1 ton of welding rod of every production, fee of material of the present invention is 444 yuan, and the fee of material of patent CN85107951 is 635.5 yuan, welding rod promptly of the present invention can be saved 191.5 yuan of fee of materials for 1 ton.Obvious economic.Table 1 is the present invention and the patent CN85107951 welding rod cost estimation table of comparisons.
Embodiment
According to chemical composition of coating of the present invention, prepared four kinds of electrode coatings, its concrete chemical composition is listed table 2 in.After the raw material of coating prepare, add an amount of binding agent, and extrusion is made four kinds of welding rods on the O8A core wire respectively.Adopt these four kinds of welding rods on the mild steel steel plate, to weld.The result shows that the welding technological properties of welding rod is good, and the weld fumes amount is low, the labor productivity height.Table 3 welds effect for embodiment.
Claims (1)
- A kind of reduced ilmenite type of high efficient iron powder electrode is characterized in that chemical composition of coating (weight %) is: reduced ilmenite 30～45%, CaCO 3, MgCO 3, BaCO 3In any one or two kinds of above sums＜8%; SiO 2＜10%, Al 2O 3＜6%, ZrO 2＜5%, Fe-Mn4～12%, any one or two kinds of sums＜5% among Fe-Si or the Fe-Ti, iron powder＞35%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN91104190A CN1019648B (en) | 1991-06-26 | 1991-06-26 | Reduced ilmenite type of high efficient iron powder electrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN91104190A CN1019648B (en) | 1991-06-26 | 1991-06-26 | Reduced ilmenite type of high efficient iron powder electrode |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1055893A true CN1055893A (en) | 1991-11-06 |
| CN1019648B CN1019648B (en) | 1992-12-30 |
Family
ID=4906473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN91104190A Expired CN1019648B (en) | 1991-06-26 | 1991-06-26 | Reduced ilmenite type of high efficient iron powder electrode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1019648B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101947704A (en) * | 2010-10-21 | 2011-01-19 | 台州海翔焊接材料有限公司 | High low temperature toughness carbon steel covered electrode |
| CN102069319A (en) * | 2010-12-24 | 2011-05-25 | 武汉铁锚焊接材料股份有限公司 | Welding rod matched with steel used for containment of nuclear power plant |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1304288C (en) * | 2004-07-03 | 2007-03-14 | 河北工业大学 | Method for preparing silicasol with big grain diameter |
| CN100445205C (en) * | 2005-03-07 | 2008-12-24 | 中国科学院上海应用物理研究所 | Manufacturing method of silica sol and obtained silica sol |
-
1991
- 1991-06-26 CN CN91104190A patent/CN1019648B/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101947704A (en) * | 2010-10-21 | 2011-01-19 | 台州海翔焊接材料有限公司 | High low temperature toughness carbon steel covered electrode |
| CN102069319A (en) * | 2010-12-24 | 2011-05-25 | 武汉铁锚焊接材料股份有限公司 | Welding rod matched with steel used for containment of nuclear power plant |
| CN102069319B (en) * | 2010-12-24 | 2013-01-30 | 武汉铁锚焊接材料股份有限公司 | Welding rod matched with steel used for containment of nuclear power plant |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1019648B (en) | 1992-12-30 |
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| GR02 | Examined patent application | ||
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| 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 |