CN1019649B - Low-hydrogen efficient alkaline iron-powder welding electrode - Google Patents
Low-hydrogen efficient alkaline iron-powder welding electrodeInfo
- Publication number
- CN1019649B CN1019649B CN91104221A CN91104221A CN1019649B CN 1019649 B CN1019649 B CN 1019649B CN 91104221 A CN91104221 A CN 91104221A CN 91104221 A CN91104221 A CN 91104221A CN 1019649 B CN1019649 B CN 1019649B
- Authority
- CN
- China
- Prior art keywords
- welding
- low
- electrode
- welding electrode
- present
- 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.)
- Expired
Links
Landscapes
- Nonmetallic Welding Materials (AREA)
Abstract
The present invention belongs to the field of welding alloy structural steel and is suitable for manufacturing an alkaline low-hydrogen iron-powder welding electrode with high efficient. The chemical components of a welding flux of the welding electrode of the present invention are mainly and reasonably adjusted, so that the welding electrode has the characteristics of good welding technological property, stable arcs, fine welding waves, smooth welding beads, etc.; the diffusible hydrogen content of deposit metal after welding is smaller than 6 ml/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.
The chemical composition of coating of low-hydrogen efficient alkaline iron-powder welding electrode proposed by the invention (weight %) is: CaCO
310～18%, MgCO
31～4%, CaF
22～6%, TiO
28～16%, ZrO
23～7%, SiO
22～4%, Mn 7～10%, and Si 0.8～2.4%, Ti1～2.5%, and B 0.1～0.35%, and surplus is iron powder.Welding rod of the present invention adopts waterglass to make binding agent, and the coating of mentioned component is mixed extrusion on the H08A core wire, and production method is same as the prior art.
In the 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, B, Si content all are difficult for wide in the welding rod of the present invention, its too high levels or low excessively, all properties of weld and welding procedure are influential, so B content is 0.1～0.35%, and Si content is 0.8～2.4%, 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 H08A 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.
Table 1 embodiment of the invention electrode coating composition (weight %)
Composition CaCO
3MgCO
3CaF
2TiO
2ZrO
2SiO
2Mn Si Ti B iron powder
Sequence number
Surplus in the of 1 10 36 16 327 1.8 1 0.1
Surplus in the of 2 15 13 10 729 2.4 2 0.2
Surplus in the of 3 13 24 12 548 0.8 1.5 0.35
Surplus in the of 4 18 42843 10 1.2 2.5 0.3
Table 2 embodiment welding rod performance table
Performance hit merit diffusible hydrogen deposition efficiency
Sequence number (J) is (%) (ml/100g)
1 68 4.4 161
2 71 5.1 155
3 64 5.0 158
4 75 4.8 151
Claims (1)
- A kind of low-hydrogen efficient alkaline iron-powder welding electrode is characterized in that covering of an electrode chemical composition (weight %) is: CaCO 310～18%, MgCO 31～4%, CaF 22～6%, TiO 28～16%, ZrO 23～7%, SiO 22～4%, Mn7～10%, Si0.8～2.4%, Ti1～2.5%, B0.1～0.35%, surplus is iron powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN91104221A CN1019649B (en) | 1991-06-27 | 1991-06-27 | Low-hydrogen efficient alkaline iron-powder welding electrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN91104221A CN1019649B (en) | 1991-06-27 | 1991-06-27 | Low-hydrogen efficient alkaline iron-powder welding electrode |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1056454A CN1056454A (en) | 1991-11-27 |
| CN1019649B true 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 | Low-hydrogen efficient alkaline iron-powder welding electrode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1019649B (en) |
Cited By (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 |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5404127B2 (en) * | 2009-03-27 | 2014-01-29 | 株式会社神戸製鋼所 | Low hydrogen coated arc welding rod |
-
1991
- 1991-06-27 CN CN91104221A patent/CN1019649B/en not_active Expired
Cited By (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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1056454A (en) | 1991-11-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105728989B (en) | High-toughness atmosphere corrosion resistance flux-cored solder wire and preparation method thereof | |
| CN104959748A (en) | Flux-cored wire special for maritime work low-temperature high-strength steel | |
| CN1260261A (en) | High-strength and high-toughness CO2 gas-shielded basic cored welding wire | |
| CN106078006A (en) | A kind of 550MPa high-strength steel ultralow-hydrogen low high tenacity seamless flux-cored wire | |
| CN108406159A (en) | A kind of high tenacity titanium alkaline seamless flux-cored wire suitable for all-position welding | |
| US3221136A (en) | Method and electrode for electric arc welding | |
| CN100467195C (en) | Metal powder core filler metal for welding of high-tensile steel | |
| KR100436489B1 (en) | Flux cored wire for gas shielded arc welding of high tensile strength steel | |
| CN104889609A (en) | Alkaline flux-cored wire for welding austenitic stainless steel | |
| CN1068270C (en) | Gas shield cored electrode for high ductility all position welding | |
| CN1117902A (en) | Titanium-type gas shielded flux-cored welding stick | |
| CN1788919A (en) | High alkalinity, low activity, superlow hydrogen sintering type solder | |
| CN1019649B (en) | Low-hydrogen efficient alkaline iron-powder welding electrode | |
| CN109175776B (en) | Low-cost alkaline flux-cored wire for structural steel welding | |
| CN109175775B (en) | Flux-cored wire for welding weathering resistant steel Q550NH | |
| CN113695787B (en) | Low-hydrogen anti-cracking flux-cored wire | |
| CN115770973A (en) | Flux-cored wire | |
| CN115971721A (en) | Flux-cored wire with high crack arrest performance and application thereof | |
| CN1657224A (en) | Ultralow-hydrogen type high efficiency iron powder welding rod for low alloy high streagth steel | |
| CN110202290A (en) | A kind of high-strength weathering steel flux-cored wire and its application | |
| CN1295056C (en) | Alkaline welding rod coating capable of improving welding process property | |
| CN112809244B (en) | High-toughness high-efficiency welding rod | |
| CN1133523C (en) | Chromium-molybdenum-seel flux welding wire | |
| CN115041868A (en) | Titanium-calcium flux-cored wire for 630 MPa-grade weathering steel and application thereof | |
| CN107984113A (en) | Multiplewire submerged arc welding flux-cored wire |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| 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 |