CN1481969A - Welding electrode for high manganese carbon steel rail - Google Patents
Welding electrode for high manganese carbon steel rail Download PDFInfo
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- CN1481969A CN1481969A CNA031419097A CN03141909A CN1481969A CN 1481969 A CN1481969 A CN 1481969A CN A031419097 A CNA031419097 A CN A031419097A CN 03141909 A CN03141909 A CN 03141909A CN 1481969 A CN1481969 A CN 1481969A
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- dry powder
- welding
- welding rod
- steel rail
- binding agent
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Abstract
The present invention relates to welding rod and is especially one kind of welding rod for high-carbon manganese steel rail. The welding rod has the same strength, roughness and hardness as high-carbon manganese steel rail and can prevent welding crack effectively. The welding rod has coating comprising dry powder and adhesive in 26-32 % of dry powder weight, and the dry powder consists of calcium carbonate 42-45 wt%, calcium fluoride 19-22 wt%, deoxidant 2-5 wt%, alloy agent 11-16 wt%, oxide 10-13 wt%, plasticizer and lubricant 1-2 wt%, stuffing 3-6 wt% and Re 0.6-2 wt%.
Description
Technical field:
The present invention relates to a kind of welding rod, refer to especially be used for the welding rod of high carbon and high manganese steel rail welding, and can guarantee strong with high carbon and high manganese steel rail etc., etc. tough, etc. hard and can effectively prevent the welding rod of weld crack.
Background technology:
The welding of high carbon and high manganese steel rail is generally to require to bear pressure.As, the track of train railway, if be not only to bear pressure, also requirement can be born pulling force, crooked iso-stress, then require welding point must be strong with high carbon and high manganese steel rail maintenance etc., etc. tough, etc. hard.
In order to reach above-mentioned specification requirement, all generally adopt the welding method of following two kinds of welding rods to realize both at home and abroad:
(1), adopt welding rod with high tenacity, backing welding when being used for the rail foot welding, thus prevent weld crack;
(2), adopt the welding rod of high strength and high rigidity, be used for the welding (day Benshen's steel welding material handbook 1993) at rail belly and top.
Yet do not have all the time and the two can be combined, thereby comprehensively go out a kind of high tenacity that both had, the welding rod that has high strength and high rigidity again.
Summary of the invention:
Technical problem to be solved by this invention just is to satisfy simultaneously the requirement of high tenacity and high strength, high rigidity, and comprehensively both characteristics are invented out the welding rod that the high carbon and high manganese steel rail welding is used.
The invention provides a kind of high carbon and high manganese steel rail welding welding rod, concrete scheme is as follows:
A kind of high carbon and high manganese steel rail welding welding rod, this electrode coating is made up of dry powder and binding agent, and its characteristics are, contain in this dry powder:
The composition percentage by weight
Calcium carbonate: 42～45%
Calcirm-fluoride: 19～22%
Deoxidier: 2～5%
Alloying constituent: 11～16%
Oxide: 10～13%
Plasticizer, lubricant: 1～2%
Filler 3～6%
Rare earth rhenium: 0.6～2%
In the dry powder total amount is 100%, and binding agent is 26～32% of a dry powder total amount;
Above-mentioned deoxidier is made up of graphite and ferrotianium;
Above-mentioned alloying constituent is made up of mid-carbon fe-mn, atomizing ferrosilicon, crome metal, molybdenum-iron;
Above-mentioned oxidant is made up of silica, zirconium dioxide, titanium dioxide;
Above-mentioned plasticizer, lubricant are respectively sodium carbonate and sodium alginate;
Above-mentioned filler is an iron powder.
Above-mentioned binding agent is a potassium sodium mixing water glass, and the ratio of potassium-sodium water glass is 1: 3, and modulus (M) is 2.9～3.1, and concentration is about 45～46 ° of Be.
Wherein, utilize graphite, ferrotianium, rare earth rhenium combined deoxidation, reduce the content of weld metal diffusible hydrogen and oxide inclusion, thereby improve the toughness and the compactness of weld metal;
Utilize crome metal, molybdenum-iron and rare earth rhenium, make the weld metal grain refinement, thereby improve its intensity and hardness;
In the binding agent of sodium silicate solution, add KP1 solution, with the arc stability and the restarting of adjusting welding rod, thereby guarantee that bead contour is attractive in appearance and internal soundness is good.
The specific embodiment:
The present invention adopts the H08A welding wire as the welding rod core wire, the binding agent consumption is 30% of dry powder gross weight, before welding rod uses through 2 hours 350 ℃ cure, preheat temperature 〉=300 before the A120 heavy rail welding ℃, weld interpass temperature 〉=200 ℃, post-weld heating temperature 〉=600 ℃ are incubated slow cooling then.
Specific embodiment is as follows:
| Composition | Embodiment 1 Φ 3.2 * 350mm | Embodiment 2 Φ 4 * 400mm | Embodiment 3 Φ 5 * 400mm |
| Calcium carbonate | ????42 | ????45 | ????45 |
| Calcirm-fluoride | ????22 | ????19 | ????20 |
| Graphite | ????0.26 | ????0.4 | ????0.44 |
| Ferrotianium | ????4 | ????4 | ????2 |
| Mid-carbon fe-mn | ????4 | ????5 | ????5.6 |
| The atomizing ferrosilicon | ????3.4 | ????4 | ????4.6 |
| Crome metal | ????2.2 | ????2.6 | ????3.2 |
| Molybdenum-iron | ????1.6 | ????2 | ????2.4 |
| Silica | ????6 | ????4.8 | ????3.2 |
| Zirconium dioxide | ????2 | ????3 | ????3 |
| Titanium dioxide | ????4 | ????3.4 | ????4 |
| Sodium carbonate | ????0.8 | ????0.8 | ????0.8 |
| Sodium alginate | ????0.6 | ????0.4 | ????0.6 |
| Iron powder | ????5.6 | ????3.6 | ????3.6 |
| Rhenium | ????1.54 | ????2 | ????1.56 |
| The dry powder total amount | ????100 | ????100 | ????100 |
The binding agent that adopts is a potassium sodium mixing water glass, and the ratio of potassium-sodium water glass is 1: 3, and modulus (M) is 3.0, and concentration is about 45～46 ° of Be.
Use 156 of the German A120 high carbon and high manganese steel heavy rail joints of producing of welding rod welding of the present invention,, all find no defectives such as weld crack through 100% magnetic particle testing.
Test of joint drawn and the case hardness result of the test used after the present invention welds are as shown in the table:
| Joint is formed (mother metal/welding rod) | Tension test σ b (Mpa) | Hardness test (HB) | ||
| Mother metal | Weld seam | The heat affected area | ||
| High carbon and high manganese steel rail welding welding rod | 735 (disconnected mother metals) | ????207 | ????249 | ????215 |
| ????211 | ????244 | ????211 | ||
| ????207 | ????255 | ????211 | ||
Effect of the present invention:
The hard welding points such as welding rod of the present invention has the performance of high strength, high rigidity, high tenacity concurrently, can effectively prevent weld crack, and acquisition and high carbon and high manganese steel heavy rail etc. are strong.
Claims (1)
1, a kind of high carbon and high manganese steel rail welding welding rod, this electrode coating is made up of dry powder and binding agent, it is characterized in that, contains in this dry powder:
The composition percentage by weight
Calcium carbonate: 42～45%
Calcirm-fluoride: 19～22%
Deoxidier: 2～5%
Alloying constituent: 11～16%
Oxide: 10～13%
Plasticizer, lubricant: 1～2%
Filler 3～6%
Rare earth rhenium: 0.6～2%
In the dry powder total amount is 100%, and binding agent is 26～32% of a dry powder total amount;
This deoxidier is made up of graphite and ferrotianium;
This alloying constituent is made up of mid-carbon fe-mn, atomizing ferrosilicon, crome metal and molybdenum-iron;
This oxidant is made up of silica, zirconium dioxide and titanium dioxide;
This plasticizer, lubricant are respectively sodium carbonate and sodium alginate;
This filler is an iron powder;
Described binding agent is a potassium sodium mixing water glass, and the ratio of potassium-sodium water glass is 1: 3, and modulus (M) is 2.9～3.1, and concentration is about 45～46 ° of Be.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03141909 CN1227094C (en) | 2003-07-29 | 2003-07-29 | Welding electrode for high manganese carbon steel rail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03141909 CN1227094C (en) | 2003-07-29 | 2003-07-29 | Welding electrode for high manganese carbon steel rail |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1481969A true CN1481969A (en) | 2004-03-17 |
| CN1227094C CN1227094C (en) | 2005-11-16 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03141909 Expired - Lifetime CN1227094C (en) | 2003-07-29 | 2003-07-29 | Welding electrode for high manganese carbon steel rail |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1227094C (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100398250C (en) * | 2004-08-30 | 2008-07-02 | 宝山钢铁股份有限公司 | High-strength weather-resistant welding rod |
| CN102009286A (en) * | 2010-10-27 | 2011-04-13 | 武汉铁锚焊接材料股份有限公司 | Mixed powder and method for improving press coating and appearance quality of alkaline welding rod and alkaline welding rod |
| CN103264234A (en) * | 2013-04-26 | 2013-08-28 | 中国船舶重工集团公司第七二五研究所 | Heat-resistant steel welding rod with low temperature impact toughness |
| CN103785969A (en) * | 2014-02-20 | 2014-05-14 | 南京信息工程大学 | Multi-element rare earth high-strength high-plasticity wear-resisting welding strip and manufacturing method of multi-element rare earth high-strength high-plasticity wear-resisting welding strip |
| CN105873717A (en) * | 2014-01-07 | 2016-08-17 | 株式会社神户制钢所 | Low-hydrogen type coated arc welding electrode |
| CN110977241A (en) * | 2019-11-18 | 2020-04-10 | 天津大桥焊材集团有限公司 | Low-crack-sensitivity welding rod for welding and repairing high manganese steel |
| CN113547254A (en) * | 2021-07-20 | 2021-10-26 | 武汉铁锚焊接材料股份有限公司 | Arc welding electrode for ultralow-temperature high-manganese steel |
-
2003
- 2003-07-29 CN CN 03141909 patent/CN1227094C/en not_active Expired - Lifetime
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100398250C (en) * | 2004-08-30 | 2008-07-02 | 宝山钢铁股份有限公司 | High-strength weather-resistant welding rod |
| CN102009286A (en) * | 2010-10-27 | 2011-04-13 | 武汉铁锚焊接材料股份有限公司 | Mixed powder and method for improving press coating and appearance quality of alkaline welding rod and alkaline welding rod |
| CN102009286B (en) * | 2010-10-27 | 2012-12-05 | 武汉铁锚焊接材料股份有限公司 | Mixed powder and method for improving press coating and appearance quality of alkaline welding rod and alkaline welding rod |
| CN103264234A (en) * | 2013-04-26 | 2013-08-28 | 中国船舶重工集团公司第七二五研究所 | Heat-resistant steel welding rod with low temperature impact toughness |
| CN103264234B (en) * | 2013-04-26 | 2016-01-20 | 中国船舶重工集团公司第七二五研究所 | A kind of heat resistant steel electrode with low-temperature impact toughness |
| 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 |
| CN103785969A (en) * | 2014-02-20 | 2014-05-14 | 南京信息工程大学 | Multi-element rare earth high-strength high-plasticity wear-resisting welding strip and manufacturing method of multi-element rare earth high-strength high-plasticity wear-resisting welding strip |
| CN103785969B (en) * | 2014-02-20 | 2015-12-09 | 南京信息工程大学 | Multielement rare earth High-strength high-plasticity wear resistance electrode and preparation method thereof |
| CN110977241A (en) * | 2019-11-18 | 2020-04-10 | 天津大桥焊材集团有限公司 | Low-crack-sensitivity welding rod for welding and repairing high manganese steel |
| CN113547254A (en) * | 2021-07-20 | 2021-10-26 | 武汉铁锚焊接材料股份有限公司 | Arc welding electrode for ultralow-temperature high-manganese steel |
| CN113547254B (en) * | 2021-07-20 | 2022-09-06 | 武汉铁锚焊接材料股份有限公司 | Arc welding electrode for ultralow-temperature high-manganese steel |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1227094C (en) | 2005-11-16 |
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Granted publication date: 20051116 |
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