CN1019647B - Non-slag wear-resistant welding electrode using in pile-up welding - Google Patents
Non-slag wear-resistant welding electrode using in pile-up weldingInfo
- Publication number
- CN1019647B CN1019647B CN 90106115 CN90106115A CN1019647B CN 1019647 B CN1019647 B CN 1019647B CN 90106115 CN90106115 CN 90106115 CN 90106115 A CN90106115 A CN 90106115A CN 1019647 B CN1019647 B CN 1019647B
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- welding
- slag
- pile
- welding electrode
- resistant
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Abstract
The present invention relates to a welding electrode for slagless and antiwear resurfacing welding. The coating materials of the welding electrode comprises paigeite, ferromolybdenum, vanadium iron, graphite, chrome metal, ferrotitanium, rare earth alloy, aluminium powder, ferrosilicon, etc. Before the resurfacing welding of the welding electrode, a workpieces dispenses with preheating. In the welding process, electric arcs are stable, a molten pool is clear, the flows fluently is good, and the resurfacing welding has multiple channels and layers and dispenses with slag removal. The rockwell hardness of a single layer is larger than or equal to 60. The welding electrode is suitable for the resurfacing welding of carbon constructional steel, low alloy constructional steel and certain middle-high alloy steel.
Description
A kind of non-slag wear-resistant welding electrode using in pile-up welding is made by ferro-boron, molybdenum-iron, vanadium iron, silver strip graphite, crome metal, ferrotianium, rare earth alloy, aluminium powder, ferrosilicon, H08A core wire, sodium silicate etc.All contain slag former, gas-forming agent, arc stabilizer, diluent, plasticizer in the coating material of existing electric welding rod for built-up welding.As No. 86101106.6 patents of China, i.e. high-hardness wear-resistant preheating surfacing welding rod not, the proportioning of its coating material is as follows:
Carbon in the high-carbon
The quartzy ferrotianium of marble fluorite titanium dioxide molybdenum-iron tungsten powder vanadium iron graphite
Ferrochrome ferromanganese
13～25 2～8 5～20 0.5～3 3～8 8～20 1.5～6 10～20 0.8～4 2～3
During welding, the wherein special marble that adds plays slag making and gas making effect, special fluorite that adds and quartzy slag making and the diluting effect of rising, the special titanium dioxide that adds plays slag making, stabilising arc effect, after the welding, the hardness of surfacing layer metal is HRC58～62, and the overlay cladding composition is:
C Cr Mo W V Mn Si S P Ti
0.9～1.4 5～7 4～6 4～6 1.5～2.5 0.4～1.0≤0.03≤0.03
0.03～0.08
After the existing electric welding rod for built-up welding welding, the thicker slag of one deck is arranged all on the welding bead, need to remove slag processing, the position, dead angle of some workpiece particularly, the repairing of hot state working equipment, it is more difficult to remove slag, labor strength is big, and working condition is poor, thereby has reduced built-up welding productivity ratio and welding quality.
The objective of the invention is to develop the wear resisting surfacing deposited electrode that need not strike slag after a kind of welding.
Non-slag wear-resistant welding electrode using in pile-up welding of the present invention is realized by following method: when selecting the raw material of electric welding rod for built-up welding coating material prescription, remove the special slag former that adds in the coating material in the existing electric welding rod for built-up welding, remove the arc stabilizer of special adding, gas-forming agent, diluent, as: remove a special slag making that adds in the existing built-up welding electric welding coating material, the marble of gas making effect, remove special adding and play slag making, the fluorite of diluting effect, quartzy, remove special adding and play slag making, titanium dioxide of stabilising arc effect or the like, arc energy smooth combustion when guaranteeing welding, the alloying element major part can carry out the transition in the surfacing layer metal and go, and motlten metal has under the prerequisite of good flowability, through repetition test, selected the prescription of the coating material of non-slag wear-resistant welding electrode using in pile-up welding of the present invention to be by weight percentage:
Ferro-boron molybdenum-iron vanadium iron graphite crome metal ferrotianium rare earth alloy aluminium powder ferrosilicon
18～24 30～40 20～25 6～8 3～5 2～3 1～3 1～2 1～2
Core wire material H08A, 1.25 millimeters of the monolateral thickness of coating, welding current kind: straight polarity direct current.
The realization of arc-stabilising when (1) non-slag wear-resistant welding electrode using in pile-up welding of the present invention welds.Owing to do not add marble in the coating material of electric welding rod for built-up welding of the present invention, rutile, feldspar, mica, ilmenites etc. can play the material of stabilising arc effect, do not add stabilising arc effect potash preferably yet, materials such as sodium carbonate, the burning of realization welding arc stablility, be to rely on the ratio (weight proportion 6～8) that has strengthened silver strip graphite in the coating material of surfacing welding, the new aluminium powder (weight proportion 1～2) that adds, add ferrotianium (weight proportion 2～3), these materials produce a large amount of heats in the easy oxidation of when welding, the ionization potential of titanium and aluminium is lower, thereby stablizes welding arc.
The realization of alloying element transition when (2) non-slag wear-resistant welding electrode using in pile-up welding of the present invention welds: because unspecial adding slag making in the coating material of electric welding rod for built-up welding of the present invention, gas-forming agent, guarantee that useful alloying element carries out the transition in the deposited metal as far as possible, added ferrotianium (weight proportion 2～3) in the coating material of electric welding rod for built-up welding of the present invention, ferrosilicon (weight proportion 1～2), rare earth alloy (weight proportion 1～3), these materials have bigger affinity to oxygen, preferential oxidation, reduce the oxygen content of weld zone to greatest extent, simultaneously, the deposited metal alloy system is that dominant shape becomes carbide with the molybdenum less to affinity for oxygen (molybdenum-iron weight proportion 30～40), guarantee the transition of alloying element, alloying element chromium of the present invention, molybdenum, vanadium, the transfer coefficient of boron is respectively 0.73～0.84,0.74～0.87,0.55～0.64,0.51～0.74.
The realization of motlten metal good fluidity when (3) non-slag wear-resistant welding electrode using in pile-up welding of the present invention welds: add aluminium powder (weight proportion 1～2) ferrosilicon (weight proportion 1～2) in the coating material of electric welding rod for built-up welding of the present invention, molybdenum-iron (weight proportion 30～40), vanadium iron (weight proportion 20～25), crome metal (weight proportion 3～5), graphite (weight proportion 6～8) etc., reduced the deposited metal fusing point, the time that liquid metal is existed is longer, particularly the adding of some alloying element (as boron) makes the more eutectic of generation in the liquid metal, has guaranteed that motlten metal has good mobility.
(4) realization of non-slag wear-resistant welding electrode using in pile-up welding compacting of the present invention: because major part is a ferroalloy in the coating material of electric welding rod for built-up welding of the present invention, the extrusion poor-performing of welding rod, for this reason, a large number of experiments show that, during compacting, the concentration of sodium silicate is controlled in 48～50 Bo Meidu scopes extrusion better performances of welding rod; Simultaneously, different graphite have bigger influence to the extrusion performance, and electric welding rod for built-up welding of the present invention adopts the silver strip graphite of small pieces; Also have the granule size of ferroalloy that the extrusion performance is also had bigger influence, granularity is more little, and the extrusion performance is good more, and the constituent equal 100% in the electric welding rod for built-up welding coating material prescription of the present invention is by 40 mesh sieves.
Non-slag wear-resistant welding electrode using in pile-up welding welding of the present invention back surfacing layer metal composition is
B Mo V C Cr
2.4～3.8 11.2～18.3 4.2～6.5 2.4～3.3 2.1～3.5
Ti Al Si S P
0.02～0.06 0.01～0.04 0.6～1.2 ≤0.035 ≤0.04
Surfacing hardness HRC 〉=60.
Non-slag wear-resistant welding electrode using in pile-up welding of the present invention, after the welding, there is not the slag that special slag former makes (but the slag that has impurity in the minute quantity ferroalloy and alloying element deoxidation and scaling loss to stay), slag multiple tracks multilayer need not struck slag, reduced the residual loss of alloying element in slag, molten metal flow is good, the welding bead smooth surface, the utilization rate of welding rod reaches more than 90%, and cost is suitable with existing electric welding rod for built-up welding, in addition, during built-up welding, workpiece does not need preheating, the surfacing hardness height, wearability is good, has certain crack resistance also to alleviate working strength of workers simultaneously.
Embodiment: the coating material of no electric welding rod for built-up welding of the present invention is by following per distribution ratio
Ferro-boron molybdenum-iron vanadium iron graphite crome metal ferrotianium rare earth alloy aluminium powder ferrosilicon
21.5 38 21.5 7.5 3.5 2 2 1 1
In the material that is adopted, boracic 16% in the ferro-boron composition, and molybdenum-iron contains molybdenum greater than 60%, and vanadium iron contains vanadium 50%, and silver strip graphite carbon containing is greater than 90%, and ferrotianium titaniferous 25%, rare earth alloy are R27, and ferrosilicon is siliceous 40～47%, and crome metal and aluminium powder are technical pure.Totally 91～92 parts of above proportionings, gram is unit, every kind of coating material enlarges 10 times and takes by weighing, claim 200 grams as ferro-boron, nominal 910～920 restrains like this, all sieve and put into washbasin through 40 orders, abundant dried stirring slowly adds incoming wave plum degree and is 49 fully wet the stirring of sodium silicate (being added with micro-potassium permanganate) again, and humidity is determined by experience, with 25 tons of extrusion press compactings, core wire is H08A, diameter phi 4, and external diameter mould φ is 6.5, compacting is come out after low temperature and hyperthermia drying are incubated 1.5 hours in the time of 350 ℃.During test weld, adopt dc welding machine, connecing property just, electric current is 180A, and sample dimensions is 100 * 80 * 20mm, and material is A
3Steel at the center line of the test specimen single track of burn-oning, without any heat treatment, polishes after the cooling naturally, and three point hardness values (HRC) are respectively 61,63,63.Growing in addition * wide * the common A of thick 1000 * 800 * 500mm of being
3The welding bead of burn-oning on the steel plate one, only there is little slag and discontinuous on the surface, rigidly fixes in self-control that built-up welding does not see Table face and slice test microfissure together yet on the anchor clamps.
Non-slag wear-resistant welding electrode using in pile-up welding of the present invention is applicable to carbon structural steel, and the built-up welding of low-alloy structural steel also can be in some middle and high steel alloy and the enterprising windrow weldering of cast iron.
Claims (4)
1, a kind of non-slag wear-resistant welding electrode using in pile-up welding, make by ferro-boron, molybdenum-iron, vanadium iron, silver strip graphite, crome metal, ferrotianium, rare earth alloy, aluminium powder, ferrosilicon, H08A core wire, sodium silicate etc., it is characterized in that the proportioning precentagewise of main coating material is: ferro-boron 18～24, molybdenum-iron 30～40, vanadium iron 20～25, silver strip graphite 6～8, crome metal 3～5, ferrotianium 2～3, rare earth alloy 1～3, aluminium powder 1～2, ferrosilicon 1～2.
2, by the described non-slag wear-resistant welding electrode using in pile-up welding of claim 1, it is characterized in that the monolateral thickness of coating is 1.25 millimeters.
3,, it is characterized in that the constituent 100% in the coating material prescription passes through 40 mesh sieves by the described non-slag wear-resistant welding electrode using in pile-up welding of claim 1.
4, by the described non-slag wear-resistant welding electrode using in pile-up welding of claim 1, the concentration (Be) of sodium silicate is 48～50 when it is characterized in that the welding rod compacting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90106115 CN1019647B (en) | 1990-11-20 | 1990-11-20 | Non-slag wear-resistant welding electrode using in pile-up welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90106115 CN1019647B (en) | 1990-11-20 | 1990-11-20 | Non-slag wear-resistant welding electrode using in pile-up welding |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1051005A CN1051005A (en) | 1991-05-01 |
| CN1019647B true CN1019647B (en) | 1992-12-30 |
Family
ID=4879818
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90106115 Expired CN1019647B (en) | 1990-11-20 | 1990-11-20 | Non-slag wear-resistant welding electrode using in pile-up welding |
Country Status (1)
| Country | Link |
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| CN (1) | CN1019647B (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1056794C (en) * | 1995-10-24 | 2000-09-27 | 李向荣 | Preheating-free high anti-cracking surfacing welding electrode |
| CN1058924C (en) * | 1998-03-06 | 2000-11-29 | 湘潭大学 | Nickel-chromium borosillicate welding rod |
| CN101837525B (en) * | 2010-06-10 | 2011-11-16 | 哈尔滨工业大学（威海） | Welding rod of arc welding in large heat input welding |
| CN102114583B (en) * | 2010-12-21 | 2013-04-24 | 苏州雅典娜科技有限公司 | Novel hardfacing electrode |
| CN103406688B (en) * | 2013-08-22 | 2016-02-17 | 广州市白云区鑫钻耐磨材料厂 | Wear resistant composite alloy antistripping surfacing welding electrode and preparation method thereof |
| CN103495813B (en) * | 2013-09-07 | 2015-06-03 | 山东建筑大学 | Alloy powder for CO2 gas shielded welding powder overlaying |
| CN105603290B (en) * | 2016-01-19 | 2017-11-21 | 苑俊奎 | Instant capacity hard alloy blocks and its production and use |
| CN109773372A (en) * | 2019-03-04 | 2019-05-21 | 辽宁工程技术大学 | A kind of manual electric arc welding coating of build-up welding bar formula and welding rod preparation method |
| CN110919234B (en) * | 2019-12-11 | 2021-06-11 | 江苏科技大学 | Self-protection flux-cored wire for in-situ generation of glass slag coating and preparation method thereof |
| CN116393693B (en) * | 2023-06-08 | 2023-09-12 | 中建安装集团有限公司 | Iron-based surfacing alloy material, iron-based surfacing alloy layer, preparation method and application |
-
1990
- 1990-11-20 CN CN 90106115 patent/CN1019647B/en not_active Expired
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| Publication number | Publication date |
|---|---|
| CN1051005A (en) | 1991-05-01 |
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