CN1056454A - High-efficiency alkaline low-hydrogen iron powder electrode - Google Patents
High-efficiency alkaline low-hydrogen iron powder electrode Download PDFInfo
- Publication number
- CN1056454A CN1056454A CN 91104221 CN91104221A CN1056454A CN 1056454 A CN1056454 A CN 1056454A CN 91104221 CN91104221 CN 91104221 CN 91104221 A CN91104221 A CN 91104221A CN 1056454 A CN1056454 A CN 1056454A
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- CN
- China
- Prior art keywords
- welding
- electrode
- iron powder
- hydrogen
- low
- 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.)
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Links
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 13
- 239000001257 hydrogen Substances 0.000 title claims abstract description 13
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 9
- 239000000203 mixture Substances 0.000 claims abstract description 6
- 239000011248 coating agent Substances 0.000 claims description 12
- 238000000576 coating method Methods 0.000 claims description 12
- 229910004261 CaF 2 Inorganic materials 0.000 claims description 5
- 229910010413 TiO 2 Inorganic materials 0.000 claims description 4
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 3
- 238000003466 welding Methods 0.000 abstract description 64
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 abstract description 6
- 239000011324 bead Substances 0.000 abstract description 5
- 229910052751 metal Inorganic materials 0.000 abstract description 4
- 239000003795 chemical substances by application Substances 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000002184 metal Substances 0.000 abstract description 3
- 229910000851 Alloy steel Inorganic materials 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract description 2
- 239000010936 titanium Substances 0.000 description 9
- 230000002378 acidificating effect Effects 0.000 description 6
- 229910052796 boron Inorganic materials 0.000 description 5
- 239000002893 slag Substances 0.000 description 5
- 229910052719 titanium Inorganic materials 0.000 description 5
- 239000002253 acid Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 229910052748 manganese Inorganic materials 0.000 description 2
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 2
- 229910000859 α-Fe Inorganic materials 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- 229910002593 Fe-Ti Inorganic materials 0.000 description 1
- 239000004115 Sodium Silicate Substances 0.000 description 1
- 229910000746 Structural steel Inorganic materials 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 229930013930 alkaloid Natural products 0.000 description 1
- 150000003797 alkaloid derivatives Chemical class 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 150000008064 anhydrides Chemical class 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000010970 precious metal Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
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- Nonmetallic Welding Materials (AREA)
Abstract
The invention belongs to the welding field of structural alloy steel.Be suitable for manufacturing low-hydrogen efficient alkaline iron-powder welding electrode.Welding rod of the present invention mainly is a chemical composition of reasonably having adjusted welding agent, and it is good to make this welding rod have a welding technological properties, and arc stability, weld ripples are fine and closely woven, and welding bead is level and smooth, and the diffusible hydrogen amount in the postwelding deposited metal is less than characteristics such as 6ml/100g.
Description
The invention belongs to field of welding material.Be applicable to the alkaline low-hydrogen type iron powder electrode of manufacturing welding low-carbon steel, low-alloy steel.
At present, high efficiency fe powder covered electrode is divided into acid and alkalescence two big classes usually.Acidic electrode has good welding technological properties, but welding seam toughness is lower, and the diffusible hydrogen content height only is applicable to the welding of general structural steel.The welding seam toughness height of basic electrode, the diffusible hydrogen amount is low, but owing to alkaloid substance in the coating is many, welding technological properties is relatively poor.In order to improve welding seam toughness and to reduce hydrogen content, in welding agent, add higher CaCO usually
3And CaF
2, but along with CaCO
3And CaF
2Increase, arc stability descends, the weld ripples chap, welding bead becomes convex, this is harmful to welding procedure.For addressing the above problem, the special permission of Japan discloses clear 58-138591 and has introduced employing MgCO
3Replaced C aCO
3The deficiency of this welding rod is slag system middle strong acidity oxide (SiO
2) higher, welding seam toughness is lower.As improve welding seam toughness and then in coating, add precious metal elements such as Cr, Ni, like this, the welding rod cost must increase.
It is good to the purpose of this invention is to provide a kind of welding procedure, welding seam toughness height, welding arc stablility, the low-hydrogen efficient alkaline iron-powder welding electrode that weld ripples is fine and closely woven, welding bead is level and smooth.
Coating by low-hydrogen efficient alkaline iron-powder welding electrode proposed by the invention (weight %) composed as follows: CaCO
310～25% MgCO
31～5% CaF
21～7% TiO
27～17% ZrO
23～12.5% SiO
2＜5% Mn 7～12% Si 0.5～2.5% Ti 1～3% B 0.1～0.35% iron powder＞45%.Welding rod of the present invention adopts waterglass to make binding agent, and the coating of mentioned component is mixed extrusion on the Ho8A core wire, and production method is same as the prior art.
In welding rod of the present invention, in order to improve arc stability, refinement weld ripples and improve appearance of weld, adopting increases low acidic oxides (ZrO in the coating
2) method positive effect is arranged, but along with the increase of low acidic oxides, cover alkalinity of medicine reduces, welding seam toughness will decrease.In order to address the above problem, the present invention adopts restriction highly acid oxide S iO
2With the addition of Si, in coating, add the material that contains boron, titanium simultaneously, by transition trace B, titanium in weld seam, suppress separating out of pro-eutectoid ferrite, thereby obtain tiny acicular ferrite, reach the toughness that improves weld seam.Si, B are bigger to the welding seam toughness influence of welding rod of the present invention.Accompanying drawing 1 is the relation of Si addition and weld seam ballistic work in the expression coating.Accompanying drawing 2 is B addition and weld seam ballistic work relations under different temperatures in the expression coating.As seen from the figure, in the welding rod of the present invention B, Si content all be difficult for wide, its too high levels or low excessively, all properties of weld and welding procedure are influential, so B content is 0.1～0.35%, Si content is 0.5～2.5%.In order to guarantee deoxidation effect, can suitably increase the content of Mn and Ti, and trace Ti is carried out the transition in the weld seam, play the effect of Ti, B composite toughening.ZrO
2Be a kind of low acidic oxides between acidic oxide and basic anhydride, it and highly acid oxide S iO
2Compare, not obvious to the basicity reduction of slag, therefore great role is arranged to improving welding seam toughness.Because ZrO
2Adding, to improving welding technological properties tangible effect is arranged, Welding Molten Drop is attenuated, improved appearance of weld, make careful that weld ripples becomes, the arc stability when also having improved simultaneously welding reduces and splashes etc.TiO
2Also can improve arc stability, beneficial to improving welding technological properties, but butt welded seam toughness also has adverse influence, and its influence degree is starkly lower than highly acid oxide S iO
2, but be higher than low acidic oxides ZrO
2In addition for transition trace Ti in weld seam, contain the Ti metal except in coating, adding Fe-Ti etc., also add the oxide TiO of Ti
2Also can play booster action.In welding rod of the present invention, keep a certain amount of CaCO
3And CaF
2Be necessary, it is the main constituent of basic clinker, plays an important role to improving welding seam toughness and reducing hydrogen content.Adding an amount of ZrO
2, TiO
2Deng material, usability of electrode can be improved.
Because the basicity of slag of electrode coating of the present invention and alloying component is reasonably combined, make welding rod of the present invention have good welding performance, compared with prior art, welding rod of the present invention has good welding seam toughness, the check of employing Charpy test, the ballistic work of welding rod of the present invention in the time of-20 ℃ is not less than 60J.Diffusible hydrogen amount in the deposited metal is less than 6ml/100g.Welding rod of the present invention has also that welding technological properties is good, welding arc stablility, weld ripples is fine and closely woven, welding bead is level and smooth, it is easy to take off slag, and the deposition efficiency of welding rod reaches more than 150%.Be applicable to two kinds of power supply welding of alternating current-direct current, can be in characteristics such as downhand welding, flat fillet weld and the weldings of horizontal fillet welding position.
Embodiment
In the composition range of welding rod of the present invention, we have prepared the welding rod welding agent skin of four kinds of compositions, and its concrete composition sees Table 1, the coating that has prepared is added sodium silicate binder mix the back extrusion on the Ho8A core wire.By showing after the welding on the low carbon steel plate: welding rod welding technological properties of the present invention is good, arc stability, take off that slag is easy, welding bead is level and smooth, shaping is attractive in appearance, deposition efficiency is high.Its performance sees Table 2.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN91104221A CN1019649B (en) | 1991-06-27 | 1991-06-27 | High-efficiency alkaline low-hydrogen iron powder electrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN91104221A CN1019649B (en) | 1991-06-27 | 1991-06-27 | High-efficiency alkaline low-hydrogen iron powder electrode |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1056454A true CN1056454A (en) | 1991-11-27 |
| CN1019649B CN1019649B (en) | 1992-12-30 |
Family
ID=4906491
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN91104221A Expired CN1019649B (en) | 1991-06-27 | 1991-06-27 | High-efficiency alkaline low-hydrogen iron powder electrode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1019649B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101844282A (en) * | 2009-03-27 | 2010-09-29 | 株式会社神户制钢所 | Low-hydrogen coated electric arc welding bar |
| CN119260241A (en) * | 2024-12-02 | 2025-01-07 | 唐山蓝燕焊接材料科技有限公司 | A surfacing welding rod for gear wear repair and preparation method thereof |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1307021C (en) * | 2005-03-16 | 2007-03-28 | 中国船舶重工集团公司第七二五研究所 | Ultralow-hydrogen type high efficiency iron powder welding rod for low alloy high streagth steel |
-
1991
- 1991-06-27 CN CN91104221A patent/CN1019649B/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101844282A (en) * | 2009-03-27 | 2010-09-29 | 株式会社神户制钢所 | Low-hydrogen coated electric arc welding bar |
| CN101844282B (en) * | 2009-03-27 | 2012-12-12 | 株式会社神户制钢所 | Low-hydrogen coated electric arc welding bar |
| CN119260241A (en) * | 2024-12-02 | 2025-01-07 | 唐山蓝燕焊接材料科技有限公司 | A surfacing welding rod for gear wear repair and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1019649B (en) | 1992-12-30 |
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