CN85109044A - The Fe-Cr-C of alkali metal containing is a hardfacing electrode - Google Patents
The Fe-Cr-C of alkali metal containing is a hardfacing electrode Download PDFInfo
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- CN85109044A CN85109044A CN85109044.3A CN85109044A CN85109044A CN 85109044 A CN85109044 A CN 85109044A CN 85109044 A CN85109044 A CN 85109044A CN 85109044 A CN85109044 A CN 85109044A
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Abstract
The present invention is used for the particularly surfacing welding of deposited antifriction metal (AFM) of welding material.The present invention is to add potassium or sodium ferroalloy in coating of build-up welding bar or the drug core component at Fe-Cr-C, changes the distribution and the shape of carbide, thereby improves the toughness of deposited metal, impact flexibility reach 1.2～1.5 kilogram-metres/centimetre
2, hardness HRC reaches more than 52, can bear stronger shock loading, and can work under fierce abrasive wear condition, also has performances such as anti-corrosion preferably, heat-resisting.Can be used for the built-up welding of carbon steel, steel alloy, spheroidal graphite cast-iron, also can be used for the defective of soldering white cast-iron.This surfacing welding cost is low, and manufacturing process is simple, and is easy to use.
Description
The invention belongs to welding field, is to be used for the particularly surfacing welding of deposited antifriction metal (AFM) of welding material.
Surfacing welding is deposited alloy welding deposit layer with property such as wear-resisting or anti-corrosion, heat-resisting in the metal surface, to satisfy the requirement of welding part under the different operating condition.Improve the wearability of surfacing welding deposited metal, mainly take two kinds of methods both at home and abroad, a kind of is the alloy content that increases surfacing welding, is used to improve the hardness of deposited metal matrix; Other method is to add the alloying element that forms carbide, boride, makes deposited metal contain high hardness compound, strengthens the abrasive wear resistance ability.Because surfacing welding is along with the raising of hardness and wearability, the toughness of deposited metal reduces rapidly, and fragility is more obvious when especially containing a large amount of high hardness compound.As the high-chromium alloy cast-iron surfacing welding, very crisp though its deposited metal wearability is good, impact flexibility only 0.3～0.4 kilogram-metre/centimetre
2
In order to address this problem, Soviet Studies as alterant, adds the coating of surfacing welding, as the surfacing welding Э-175 Ъ 8 Х 6 С Г of Г О С Т 10051-75 standard code with niobium, its overlay cladding can be used for fierce abrasive wear condition ， And can bear certain impact flexibility.Because niobium costs an arm and a leg, use in the industrial large-scale popularization that is difficult for.
The objective of the invention is to improve the toughness of the surfacing welding deposited metal that contains the high hardness alloy carbide, making it can bear stronger shock loading ， And can work under fierce abrasive wear condition, is easy to be extensive use of aborning.
The present invention adds an amount of alkali metal in the coating of surfacing welding, with the distribution and the shape of change carbide, thus the toughness of raising deposited metal.Alkali metal adopts the ferroalloy that contains potassium or sodium 10～15%, behind crushing screening, carries out dry method passivation and wet method Passivation Treatment again.Coating is selected alkalescence or acid slag system for use.Alloying constituent adopts carbon ferrochrome, mid-carbon fe-mn etc., and the requirement according to the different service conditions of deposited metal also can add alloying constituents such as a certain amount of nickel powder, ferro-niobium, cobalt powder and graphite.Gas making, slag former are selected marble (or magnesia), titanium dioxide, fluorite, quartz etc. for use.The proportioning of its basic coating and acid coating composition is respectively: (% by weight)
Marble (or magnesia) 10～35%, fluorite 2～30%, titanium dioxide 2～5%, sodium carbonate 0～2%, quartz 1～9%, mid-carbon fe-mn 1～5%, carbon ferrochrome 15～65%, potassium or sodium ferroalloy 6～12%,
Marble 6～25%, titanium dioxide 6～25%, magnesia 3～15%, white clay 2～4%, mica 0～7%, asbestos 0～1%, sodium carbonate 1～2%, mid-carbon fe-mn 1～5%, carbon ferrochrome 15～65%, potassium or sodium ferroalloy 6～12%.
In the proportioning of above-mentioned basic coating and acid coating composition, graphite 0～5%(weight that also can add in the following alloy one or more), nickel powder 0～15%(weight), cobalt powder 0～10%(weight), ferro-niobium 0～30%(weight) molybdenum-iron 0～5%(weight) alloy such as.
The reason of determining above-mentioned coating composition is:
Marble or magnesia are carbonate, meet high temperature and decompose in when welding, emit CO
2, to molten of metal, there is protective effect in the molten bath, avoids the pollution of air.
Magnesia can reduce coating acidity.
Fluorite has the effect of H, can reduce the content of H in the molten bath, prevents to produce pore.
Titanium dioxide, quartz, white clay all improve the extrusion and the welding procedure of coating.
Manganese can desulfurization, improves the ability in heat resistanceheat resistant crack, and an amount of manganese also can strengthen potassium, and the effect of sodium improves the toughness of deposited metal.
Carbon ferrochrome is the source of Cr and C in the deposited metal, can improve the abrasive wear resistance performance, and Cr had not only formed carbide but also solid solution in the matrix of Fe, both can improve wearability, can improve corrosion stability, hear resistance again.
Potassium or sodium ferroalloy can change the distribution and the shape of deposited metal carbide.
Nickel can make the deposited metal matrix become austenite, and strengthens alkali-metal effect, improves carbide shape, thereby improves toughness, corrosion resistance and solderability.
Molybdenum can make the deposited metal matrix produce martensite, improve matrix hardness, thereby improves anti-heavily stressed abrasive wear, water-fast sand abrasion performance.
Niobium can improve carbide shape and distribution, improve deposited metal toughness, improves wearability, hear resistance simultaneously.
Cobalt can improve deposited metal hear resistance and wearability.
The core wire of hardfacing electrode of the present invention adopts mild steel weldinmg rod or steel alloy welding wire, also available alloy cast iron welding wire.With the alloying constituent of described composition coating, gas making, slag former, it is even to contain powder such as potassium or sodium ferroalloy, adds potassium-sodium water glass bonding agent and even again, is applied on the core wire, can adopt interchange or direct current manual arc welding machine to carry out built-up welding after the drying.This surfacing welding can be in the enterprising windrow weldering of materials such as carbon steel, steel alloy, spheroidal graphite cast-iron.The defective that also can be used for the soldering white cast-iron.
This surfacing welding can obtain following deposited metal composition, (% by weight) C1～3%, Cr 〉=4%, Mn0.5～3%, Ni0～10%, Mo0～5%, Co0～8%, Nb0～10%.
According to the instructions for use of different overlay claddings, adjust by composition electrode coating, can obtain different deposited metal composition in the above-mentioned scope.
Described surfacing welding, except that the coated electrode that can be made into alkalescence or acid slag system, also can be with above-mentioned potassium or sodium ferroalloy, gas making, slag former, alloying constituent after mixing, adds thin steel coil strip and makes flux-cored electrode tubular electrode.
Alkali metal containing Fe-Cr-C of the present invention is a hardfacing electrode, by add potassium or sodium ferroalloy in covering of an electrode or medicine core, significantly improves the toughness of deposited metal, its impact flexibility reach 1.2～1.5 kilogram-metres/centimetre
2, overlay cladding can bear stronger shock loading, and can work under the abrasive wear condition of fierceness, simultaneously, good anti-corrosion, hear resistance are arranged, and applied widely, the welding procedure of this surfacing welding is obviously improved, crack resistance improves, manufacturing process is simple, and is easy to use, can be when being used for small size, single-layer surfacing pre-heated work pieces, preheat temperature is lower during multiple-bead deposit, is convenient in industrial extensive use.
Embodiment:
One of basic coating proportioning components of hardfacing electrode of the present invention is (% by weight) marble 15%, fluorite 4%, titanium dioxide 3%, sodium carbonate 2%, mid-carbon fe-mn 3%, carbon ferrochrome 66%, potassium ferroalloy 7% wherein contains potassium 10～15%(weight in the potassium ferroalloy), siliceous＜15%(weight).
Above-mentioned various chemical analysis and granularity must meet " welding rod material technology standard ".
The ferroalloy that will contain potassium is earlier pulverized, 60 orders sieve, and the dry method passivation is 2 hours in 300 ℃ of air, use the potassium permanganate solution wet method passivation of 1/1000 concentration again, oven dry then, roll over brokenly, 16 orders sieve, again with alloying constituent, after the mixing of gas making slag former is even, adding concentration is that 45～50 ° of Be, modulus are 2.4 potassium sodium mixing water glass bond, and weight is 16～18% of coating powder total amount, mixes thoroughly with mixer.Adopt conventional extrusion technology will with the slurry coating material after even, with oil pressure extrusion press extrusion on the H08A core wire.The surfacing welding that suppresses must be through low temperature airing and hyperthermia drying.
Claims (5)
1, Fe-Cr-C is a hardfacing electrode, and feature of the present invention is to add an amount of alkali metal in the coating of described surfacing welding.
The proportioning of a, surfacing welding basic coating composition is by weight percentage: marble (or magnesia) 10～35%, fluorite 2～30%, titanium dioxide 2～5%, sodium carbonate 0～2%, quartzy 1～9%, mid-carbon fe-mn 1～5%, carbon ferrochrome 15～65%, potassium or sodium ferroalloy 6～12%.
The proportioning of b, the acid coating composition of surfacing welding is: marble 6～25%, titanium dioxide 6～25%, magnesia 3～15% by weight percentage, white clay 2～4%, asbestos 0～1%, mica 0～7%, sodium carbonate 1～2%, mid-carbon fe-mn 1～5%, carbon ferrochrome 15～65%, potassium or sodium ferroalloy 6～12%.
The graphite 0～5% (weight) that also can contain in the following alloy one or more in the proportioning components of c, described surfacing welding basic coating and acid coating, molybdenum-iron 0～5% (weight), nickel powder 0～15% (weight), ferro-niobium 0～30% (weight), cobalt powder 0～10% alloy compositions such as (weight).
2, surfacing welding according to claim 1 is characterized in that containing in potassium or the sodium ferroalloy potassium or sodium 10～15%(weight).
3, according to claim 1,2 described surfacing weldings, it is characterized in that the silicon＜15%(weight that contains in potassium or the sodium ferroalloy).
4, according to claim 1,2,3 described surfacing weldings, it is characterized in that potassium or sodium ferroalloy are pulverized, 60 orders sieve, and through 300～350 ℃ of dry method passivation 1～2 hour, use the potassium permanganate solution wet method passivation of 1/1000 concentration again.
5, according to claim 1,4 described surfacing weldings, the composition scope that it is characterized in that the deposited metal of surfacing welding is C1～3%(weight), Cr 〉=4%(weight), Mn0.5～3%(weight), Ni0～10%(weight), Mo0～5%(weight), Co0～8%(weight), Nb0～10%(weight).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN85109044.3A CN1004865B (en) | 1985-12-13 | 1985-12-13 | Abrasion-resistant welding electrode of fe-cr-c system containing alkaline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN85109044.3A CN1004865B (en) | 1985-12-13 | 1985-12-13 | Abrasion-resistant welding electrode of fe-cr-c system containing alkaline |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN85109044A true CN85109044A (en) | 1987-08-19 |
| CN1004865B CN1004865B (en) | 1989-07-26 |
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ID=4796218
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN85109044.3A Expired CN1004865B (en) | 1985-12-13 | 1985-12-13 | Abrasion-resistant welding electrode of fe-cr-c system containing alkaline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1004865B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100553855C (en) * | 2007-05-23 | 2009-10-28 | 山东大学 | A kind of sandwiched alloy powder block used for built-up welding and preparation method thereof and application |
| CN1997483B (en) * | 2003-06-17 | 2010-04-28 | 霍伯特兄弟公司 | Filler composition for high yield strength base metals |
| CN103008923A (en) * | 2012-12-21 | 2013-04-03 | 西安理工大学 | Low-hydrogen basic welding rod for welding 1Ni9 steel and preparation method thereof |
| CN103418885A (en) * | 2013-07-19 | 2013-12-04 | 燕山大学 | Method of enhancing surface hardness of ferrite nodular cast iron |
| CN103600181A (en) * | 2013-11-22 | 2014-02-26 | 天津市永昌焊丝有限公司 | Low-hydrogen electrode for root welding on pipelines |
| CN105364415A (en) * | 2015-11-20 | 2016-03-02 | 燕山大学 | Method for refining graphite nodules on surface of spherical graphite cast iron |
| CN106868482A (en) * | 2017-01-20 | 2017-06-20 | 武汉铁锚焊接材料股份有限公司 | A kind of passivating method of nickel magnesium alloy |
| CN115772636A (en) * | 2022-11-23 | 2023-03-10 | 江苏安宇捷热工科技有限公司 | High-temperature wear-resistant corrosion-resistant alloy |
-
1985
- 1985-12-13 CN CN85109044.3A patent/CN1004865B/en not_active Expired
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1997483B (en) * | 2003-06-17 | 2010-04-28 | 霍伯特兄弟公司 | Filler composition for high yield strength base metals |
| CN100553855C (en) * | 2007-05-23 | 2009-10-28 | 山东大学 | A kind of sandwiched alloy powder block used for built-up welding and preparation method thereof and application |
| CN103008923A (en) * | 2012-12-21 | 2013-04-03 | 西安理工大学 | Low-hydrogen basic welding rod for welding 1Ni9 steel and preparation method thereof |
| CN103008923B (en) * | 2012-12-21 | 2015-06-24 | 西安理工大学 | Low-hydrogen basic welding rod for welding 1Ni9 steel and preparation method thereof |
| CN103418885A (en) * | 2013-07-19 | 2013-12-04 | 燕山大学 | Method of enhancing surface hardness of ferrite nodular cast iron |
| CN103418885B (en) * | 2013-07-19 | 2016-01-06 | 燕山大学 | A kind of method improving ferrite ductile cast iron case hardness |
| CN103600181A (en) * | 2013-11-22 | 2014-02-26 | 天津市永昌焊丝有限公司 | Low-hydrogen electrode for root welding on pipelines |
| CN105364415A (en) * | 2015-11-20 | 2016-03-02 | 燕山大学 | Method for refining graphite nodules on surface of spherical graphite cast iron |
| CN106868482A (en) * | 2017-01-20 | 2017-06-20 | 武汉铁锚焊接材料股份有限公司 | A kind of passivating method of nickel magnesium alloy |
| CN106868482B (en) * | 2017-01-20 | 2019-02-12 | 武汉铁锚焊接材料股份有限公司 | A kind of passivating method of nickel magnesium alloy |
| CN115772636A (en) * | 2022-11-23 | 2023-03-10 | 江苏安宇捷热工科技有限公司 | High-temperature wear-resistant corrosion-resistant alloy |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1004865B (en) | 1989-07-26 |
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