CN1924028A - Purifying and alloying method of wear-resistant steel fusant - Google Patents
Purifying and alloying method of wear-resistant steel fusant Download PDFInfo
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- CN1924028A CN1924028A CN 200610105085 CN200610105085A CN1924028A CN 1924028 A CN1924028 A CN 1924028A CN 200610105085 CN200610105085 CN 200610105085 CN 200610105085 A CN200610105085 A CN 200610105085A CN 1924028 A CN1924028 A CN 1924028A
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Abstract
The invention discloses a purifying and alloying method of abrasion-proof steel fuse, which comprises the following steps: fusing in the common electric furnace; pre-deoxidizing Al in the furnace; deoxidizing Si-Ca alloy without skimmer; injecting fuse in the steel bag; adding yttrium-based rare earth and ilmenitite particle in advance; casting fuse; assembling ceramic poromeric piston on the bottom of steel bag to blow argon;purifying; blowing argon continuously; realizing nitrogen micro-alloying for steel fuse.
Description
Technical field
The invention belongs to steel material technical field, relate to the purification and the alloyage process of all kinds of steel fusants, particularly the method for a kind of purification of wear-resistant steel fusant and alloying.
Background technology
Along with the develop rapidly of modern industry, for satisfying the needs of all kinds of engineering components and equipment, novel material continues to bring out.Simultaneously, also more and more higher to the specification of quality of traditional material, the preparation technology of the quality of raising traditional material, improvement traditional material has become the task of top priority.Ferrous materials have industrial scale big, be easy to processing, dependable performance, easy to use, cheap and be convenient to characteristics such as recovery, be still prevailing structural timber.The inner quality of iron and steel and the purity of steel fusant have very big relation, and the non-metallic inclusion in the steel fusant can cause the deterioration of product performance, the decline of interior quality, and non-metallic inclusion helps the formation of pore simultaneously, reduce the density of foundry goods.The purity that improves steel fusant mainly concentrates on the strict inclusion of controlling in the iron and steel, comprises quantity, size, distribution, shape, the type of inclusion.The control of inclusion mainly is its generation of minimizing, it is carried out modification, short its come-up in the iron and steel.
According to the data-searching that the applicant did, existing scavenging agent and method thereof have following patent:
Chinese invention patent CN1405332 discloses a kind of purification of molten steel agent, it is characterized in that its chemical ingredients is: 45-75%CaO, 10-30%Al
2O
3, any or any two above sum is 5-18% among metal A l, Ca, Si, the Ba, SiO
2≤ 8%.This invention purification of molten steel agent adds desulfurization in the steel, deoxidation effect is good, and inclusion in the molten steel had stronger adsorptive power, but this method can't work the alloying action that improves tissue to molten steel, and little to the tissue influence of refinement steel, degassing effect is also not obvious in addition.
Chinese invention patent CN1341756 discloses a kind of production technique of silicon calcium barium magnesium liquid steel scavenging agent, it is characterized in that: raw material comprises high quality silicon stone (or quartz sand, roast silica), carbonate-free lime, barite, rhombspar, fluorite, Jiao Li etc., and its weight percent is: silica: lime: barite: rhombspar: fluorite: burnt grain=(2-4): (3-5): (2-4): (2-4): 1: 1.This scavenging agent is a kind of efficient agent for purifying molten steel, reductor, sweetening agent, can absorb impurity in the steel, improves fluidity molten steel, improve form, cleaning molten steel, the raising steel of steel inclusion.But this method can only aseptic to molten steel, and can't work the alloying action that improves tissue.
Chinese invention patent CN1084894 discloses a kind of purification of molten steel heating line feeding purifying method and has purified the heating cored-wire, it is characterized in that: purification of molten steel heating is to rely on that the molten steel feeding purifies the main cored-wire of heating and auxiliary material fine setting molten steel composition is paid cored-wire, and join oxygen blast, Argon is carried out.Purifying the main cored-wire of heating and assisting material fine setting molten steel composition to pay cored-wire is to make foreskin with aluminium strip, be respectively that preparation of raw material becomes the material powder with ferrosilicon, calcium powder, Silcaz, sial Ca-Fe alloy, silico-calcium barium-ferrum alloy, ferromanganese, fluorite, rare earth element, carbon dust, coke powder, pitch, magnesium powder, the two volume pressed be processed into serial wire rod then.This invention not only solved purification of molten steel, heating, intensification, temperature adjustment, guaranteed the continuous casting ordinary production, and improved continuous caster throughput and improved slab quality, and reduces tapping temperature, shortens smelting cycle, improves furnace life, reduces raw materials consumption.But there are technology and equipment complexity and the high deficiency of cost.
Chinese invention patent CN1055769 discloses the device that utilizes the ceramic filter refining molten metal, utilize this device can the filtration, purification metal melt molten steel especially.Use this device molten steel is had certain decontamination effect improving, but exist easy blocking filter of inclusion and fine foreign matter to be difficult to filter the deficiency of removal.In addition, adopt AOD, VOD, VODC, LF, technology such as PLF, VILF also to have good degassing effect (Zhang Zhongqiu, Ji Zhongmin, Li Zhongchao, Lou Yanchun, Xu Chao, Ma Yanglin, pure cast steel and refining thereof, casting, 1998, (1): 49-52), but have equipment complexity and the big deficiency that waits of investment.The present invention purifies on the steel fusant basis in Argon, continue to be blown into nitrogen, make in nitrogen and the steel fusant element reactions such as the titanium that adds in advance, aluminium, generate tiny fine particles such as TiN, AlN, fine particle such as TiN, AlN can work to solidify core, thereby can refinement iron and steel solidified structure, improve the performance of ferrous materials.
Summary of the invention
The object of the invention provides a kind of purification of wear-resistant steel fusant and the method for alloying.The present invention is the steel fusant to melting under the atmospheric environment, behind the injection ladle of coming out of the stove, at ladle bottom ceramic porous plug is installed and is blown into argon gas, is blown into argon gas by ceramic porous plug in steel fusant and can removes inclusion and gas, purifies steel fusant.On this basis, when steel fusant after Argon purifies, continuation is blown into nitrogen by ceramic porous plug in steel fusant, make in nitrogen and the steel fusant element reactions such as the titanium that adds in advance, aluminium, generate tiny fine particles such as TiN, AlN, fine particle such as TiN, AlN can work to solidify core, thereby can refinement iron and steel solidified structure, improves the performance of ferrous materials.
Purpose of the present invention can be achieved by following technical measures:
A kind of purification of wear-resistant steel fusant and the method for alloying, it is characterized in that, this method is carried out aluminium pre-deoxidation and silicon-calcium alloy final deoxygenation to the steel fusant of melting under the normal atmospheric environment, during the steel fusant pre-deoxidation, the add-on of aluminium is 0.10%～0.40% of a steel fusant, and the add-on of silicon-calcium alloy is 0.12%～0.25% of a steel fusant during final deoxygenation; Do not skim after the deoxidation, directly steel fusant is injected ladle, the Yttrium base rare earth quantity that adds in advance in the ladle is 0.15%～0.40% of steel fusant, ferrotianium quantity is 0.15%～0.40% of steel fusant, before the metal melt cast, carry out the purifying treatment of Argon and the microalloying processing of nitrogen flushing successively by the porous plug that is installed in ladle bottom.
During steel fusant Argon purifying treatment, select argon flow amount 10L/min～30L/min, argon pressure 8MPa～20MPa, argon blowing time 3min～10min; Steel fusant leaves standstill 2min～5min after the Argon.
When the steel fusant nitrogen flushing is handled, select nitrogen flow 12L/min～30L/min, nitrogen pressure 10MPa～20MPa, nitrogen flushing time 5min～12min.
The present invention compared with prior art has following characteristics:
(1) adopt the present invention to purify steel fusant, simple to operate, the efficient height, cost is low, the steel fusant decontamination effect improving is obvious, after adopting the present invention to the steel fusant purifying treatment, can make that inclusion content is controlled at the level of area 0.04% below in the steel fusant, make steel fusant reach super quiet molten steel and put down.
(2) adopt the present invention that steel fusant is carried out the nitrogen microalloying and handle, the nitrogen in the steel fusant is evenly distributed.
(3) adopting the present invention that steel fusant is carried out the nitrogen microalloying handles, make in nitrogen and the steel fusant element reactions such as the titanium that adds in advance, aluminium, generate tiny fine particles such as TiN, AlN, fine particles such as TiN, AlN can work to solidify core, thereby can refinement iron and steel solidified structure.
(4) adopting the present invention that steel fusant is purified with the nitrogen microalloying handles, make solidified structure realize thinning processing behind the element chemical combination such as combined nitrogen and titanium, aluminium, can obviously improve ferrous materials intensity and toughness, wherein intensity improves 15%～25%, and toughness improves 25%～40%.
Description of drawings
Fig. 1 is Argon of the present invention, nitrogen process schematic representation.Label is wherein represented respectively: 1, slag blanket, 2, ladle, 3, steel fusant, 4, ceramic porous porous plug.
The embodiment that provides below in conjunction with accompanying drawing and contriver is described in further detail the present invention.
Embodiment
According to technical scheme of the present invention, a kind of purification of wear-resistant steel fusant and the method for alloying, with common electric furnace steel-smelting iron material under atmospheric environment, before coming out of the stove, steel fusant carries out the stokehold chemical composition analysis, after main alloy element reaches the composition requirement, in stove with 0.10%～0.40%Al pre-deoxidation, and with 0.12%～0.25%Si-Ca alloy final deoxygenation, do not skim after the deoxidation, directly steel fusant is injected ladle, the Yttrium base rare earth and the ferrotianium that add particle diameter 3mm～8mm in the ladle in advance, Yttrium base rare earth add-on are 0.15%～0.40%, and the ferrotianium add-on is 0.15%～0.40%.
Rare earth adds the effect that has desulfurization, degasification in the iron and steel, the fine particle of rare earth and liquid reactant metal generation simultaneously, the forming core effect of accelerated solidification, the surfactivity rare earth element forms the adatom film at the mobile plane of crystal, reduce the speed of mobile ion, the crystal grain of these characteristics energy refinement ferrous materials of rare earth element, the segregation of restriction dentrite improves mechanical property, oxidation-resistance and wear resistance.But the side effect that adds rare earth is to bring to be mingled with, and in order to give full play to the beneficial effect of rare earth, can overcome above-mentioned side effect again, and the present invention replaces cerium base light rare earths commonly used with yttrium-base heavy rare earth.Adopt yttrium-base heavy rare earth can obtain the less deoxidation of proportion, desulfurization product, be beneficial to its come-up.The steel fusant of melting under atmospheric environment, contain more be mingled with, gas, the obdurability of infringement material.
Before metal melt cast, carry out the Argon purifying treatment by the ceramic porous plug that is installed in ladle bottom, can refining molten metal, improve its cast quality product.The Argon decapacitation is stirred outside the steel fusant, because Argon Bubble is small and scattered, has outgassing, thereby reduces gas and inclusion content.
During steel fusant Argon purifying treatment, if argon flow amount is less than 10L/min, then gas in the steel fusant and inclusion can not be fully to the enrichments of ladle top, gas and inclusion residual in the steel fusant are many, after argon flow amount surpasses 30L/min, the steel fusant at ladle top seethes, and is involved in gas on the contrary, pollutes steel fusant.Argon blowing time is during less than 3min, and inclusion and gas residual quantity in the steel fusant are many, and after argon blowing time surpassed 10min, the steel fusant cooling too much was unfavorable for casting pouring subsequently.Argon pressure is during less than 8MPa, and gas and inclusion residual in the steel fusant are many, and after argon pressure surpassed 20MPa, argon gas easily was involved in the inclusion of gas and the enrichment of ladle top to the stirring aggravation of steel fusant, pollutes steel fusant.Select argon flow amount 10～30L/min, argon pressure 8～20MPa, argon blowing time 3～10min, the Argon purification process technique of the time of repose 2～5min of steel fusant after the Argon, steel fusant good purification.After the Argon in the steel fusant inclusion obviously reduce, help improving the obdurability of ferrous materials.
After the steel fusant Argon purifies, continue in steel fusant, to be blown into nitrogen, make steel fusant realize the nitrogen microalloying through ceramic porous plug.After steel fusant is blown into nitrogen, element reactions such as the aluminium that will add in advance with steel fusant, titanium generate tiny fine particles such as TiN, AlN, and fine particles such as TiN, AlN can work to solidify core, thereby can refinement iron and steel solidified structure, improve the performance of ferrous materials.When steel fusant nitrogen flushing microalloying was handled, if nitrogen flow was less than 12L/min, and then steel fusant can not be realized even microalloying, and after nitrogen flow surpassed 30L/min, the steel fusant at ladle top seethed, and is involved in gas on the contrary, polluted steel fusant.The nitrogen flushing time, the nitrogen content in the steel fusant was low, the microalloying weak effect during less than 5min, and after the nitrogen flushing time surpassed 12min, nitrogen content was too high in the steel fusant, and Jiao Zhu foundry goods is prone to pore subsequently, and the steel fusant cooling too much, is unfavorable for casting pouring subsequently.Nitrogen pressure is during less than 10MPa, and steel fusant can not be realized even microalloying, and after nitrogen pressure surpassed 20MPa, nitrogen easily was involved in the inclusion of gas and the enrichment of ladle top to the stirring aggravation of steel fusant, pollutes steel fusant.Select nitrogen flow 12～30L/min, nitrogen pressure 10～20MPa, nitrogen flushing time 5～12min, steel fusant can be realized the microalloying of nitrogen well.
Select for use ceramic porous plug to be because ceramic hardness height, wear resistance are good, and high-temperature stability is good, argon gas and nitrogen gas stream are behind porous plug, the porous plug wearing and tearing are little, and nitrogen not can with ceramic porous plug generation chemical reaction, therefore Argon, nitrogen flushing process stabilizing, ceramic porous plug long service life can also reduce Argon, nitrogen flushing cost.
Below be the embodiment that the contriver provides:
Embodiment 1
At first make grinder hammerhead high-boron cast steel material, before steel fusant is come out of the stove, carry out the stokehold chemical composition analysis with the melting under atmospheric environment of 1000 kilograms of medium-frequency induction furnaces.After its main alloy element (C, B, Si, Mn etc.) reaches the composition requirement, in stove, use the 0.25%Al pre-deoxidation, and with behind the 0.16%Si-Ca alloy final deoxygenation, do not skim, directly steel fusant 3 is injected ladle 2, the Yttrium base rare earth and the ferrotianium that add particle diameter 3mm～8mm in the ladle in advance, wherein the Yttrium base rare earth add-on is 0.18% of a steel fusant, the ferrotianium add-on is 0.24% of a steel fusant.Make the steel fusant surface coverage have one deck and atmosphere to play the slag blanket 1 of isolation and insulation effect.Carry out the Argon purifying treatment by 4 pairs of high-boron cast steel molten steel of ceramic porous porous plug then.Argon flow amount is 15L/min during Argon, argon pressure 18MPa, and argon blowing time 8min, molten steel leaves standstill 3min after the Argon.After the molten steel Argon purifies, continue in steel fusant, to be blown into nitrogen, make steel fusant realize the nitrogen microalloying through ceramic porous porous plug 4.When steel fusant nitrogen flushing microalloying is handled, nitrogen flow 15L/min, nitrogen pressure 18MPa, nitrogen flushing time 9min, steel fusant can be realized the microalloying of nitrogen well.After steel fusant is blown into nitrogen, will with the element reactions such as aluminium, titanium that add in advance in the steel fusant, generate tiny fine particles such as TiN, AlN, fine particles such as TiN, AlN can work to solidify core, thereby can refinement iron and steel solidified structure, improve the performance of ferrous materials.To pour into the sodium silicate sand casting mold through the molten steel after purification and the processing of nitrogen microalloying, make grinder hammerhead, under as cast condition, test inclusion content, find that inclusion content only is 0.028%, and organize tiny, foundry goods is tested its mechanical property through after normalizing and the temper, compares with not purifying with the nitrogen microalloying, tensile strength is by 617MPa, be increased to 753MPa, increasing degree reaches 22.04%, and impelling strength is by 13.3J/cm
2, be increased to 17.0J/cm
2, increasing degree reaches 27.82%, and changes in hardness is not obvious, has all reached 58～60HRC, uses the grinder hammerhead of processing and manufacturing of the present invention, is used for broken iron ore, compares with common high-boron cast steel, and the crushing of ore has increased by 26.05%.
Embodiment 2
At first, before coming out of the stove, steel fusant carries out the stokehold chemical composition analysis with 500 kilograms of alkaline medium-frequency induction furnaces chrome molybdenum boron cast steel material that zinc liquid transfer lime is made in melting under atmospheric environment.After its main alloy element (C, Cr, Mo, B etc.) reaches the composition requirement, in stove, use the 0.32%Al pre-deoxidation, and with behind the 0.19%Si-Ca alloy final deoxygenation, do not skim, directly steel fusant 3 is injected ladle 2, the Yttrium base rare earth and the ferrotianium that add particle diameter 3mm～8mm in the ladle in advance, wherein the Yttrium base rare earth add-on is 0.22% of a steel fusant, the ferrotianium add-on is 0.28% of a steel fusant.Make the steel fusant surface coverage have one deck and atmosphere to play the slag blanket 1 of isolation and insulation effect.Carry out the Argon purifying treatment by 4 pairs of chrome molybdenum boron cast steels of ceramic porous porous plug molten steel then.Argon flow amount is 22L/min during Argon, argon pressure 16MPa, and argon blowing time 9min, molten steel leaves standstill 4min after the Argon.After the molten steel Argon purifies, continue in steel fusant, to be blown into nitrogen, make steel fusant realize the nitrogen microalloying through ceramic porous porous plug 4.When steel fusant nitrogen flushing microalloying is handled, nitrogen flow 25L/min, nitrogen pressure 16MPa, nitrogen flushing time 7min, steel fusant can be realized the microalloying of nitrogen well.After steel fusant is blown into nitrogen, will with the element reactions such as aluminium, titanium that add in advance in the steel fusant, generate tiny fine particles such as TiN, AlN, fine particles such as TiN, AlN can work to solidify core, thereby can refinement iron and steel solidified structure, improve the performance of ferrous materials.To pour into resin-bonded sand cast form through the molten steel after purification and the processing of nitrogen microalloying, make zinc liquid transfer lime, under as cast condition, test inclusion content, find that inclusion content only is 0.026%, and organize tiny, after foundry goods process cold quenching and the temper, test its mechanical property, compare with not purifying with the nitrogen microalloying, tensile strength is by 892MPa, be increased to 1063MPa, increasing degree reaches 19.17%.Impelling strength is by 34.1J/cm
2, be increased to 45.2J/cm
2, increasing degree reaches 32.55%, and changes in hardness is not obvious, has all reached 43～45HRC.Use the zinc liquid transfer lime of processing and manufacturing of the present invention, be used to carry zinc liquid, compare with common chrome molybdenum boron cast steel, transfer lime has better wear resistance and solidity to corrosion, has increased by 22.37% work-ing life.
Embodiment 3
At first make roll high carbon high-speed steel material, before steel fusant is come out of the stove, carry out the stokehold chemical composition analysis with the melting under atmospheric environment of 500 kilograms of medium-frequency induction furnaces.After its main alloy element (C, V, W, Mo, Cr, Si, Mn etc.) reaches the composition requirement, in stove, use the 0.35%Al pre-deoxidation, and with behind the 0.20%Si-Ca alloy final deoxygenation, do not skim, directly steel fusant 3 is injected ladle 2, the Yttrium base rare earth and the ferrotianium that add particle diameter 3mm～8mm in the ladle in advance, Yttrium base rare earth add-on are 0.25% of steel fusant, and the ferrotianium add-on is 0.33% of a steel fusant.Make the steel fusant surface coverage have one deck and atmosphere to play the slag blanket 1 of isolation and insulation effect.Carry out the Argon purifying treatment by 4 pairs of rapid steel molten steel of ceramic porous porous plug then.Argon flow amount is 22L/min during Argon; Argon pressure 15MPa, argon blowing time 6min, molten steel leaves standstill 4min after the Argon.After the molten steel Argon purifies, continue in steel fusant, to be blown into nitrogen, make steel fusant realize the nitrogen microalloying through ceramic porous porous plug 4.When steel fusant nitrogen flushing microalloying is handled, nitrogen flow 25L/min, nitrogen pressure 15MPa asks 7min during nitrogen flushing, steel fusant can be realized the microalloying of nitrogen well.After steel fusant is blown into nitrogen, will with the element reactions such as aluminium, titanium that add in advance in the steel fusant, generate tiny fine particles such as TiN, AlN, fine particles such as TiN, AlN can work to solidify core, thereby can refinement iron and steel solidified structure, improve the performance of ferrous materials.To pour into the metal mold casting mold of horizontal centrifuge through the molten steel after purification and the processing of nitrogen microalloying, make roll, under as cast condition, test inclusion content, find that inclusion content only is 0.033%, and organize tiny, foundry goods is tested its mechanical property through after normalizing and the temper, compares with not purifying with the nitrogen microalloying, tensile strength is by 823MPa, be increased to 974MPa, increasing degree reaches 18.35%, and impelling strength is by 11.4J/cm
2, be increased to 15.7J/cm
2, increasing degree reaches 37.72%, and changes in hardness is not obvious, has all reached 64～66HRC, uses the high-speed steel roll of processing and manufacturing of the present invention, compares with common high-speed steel roll, and the steel transportation amount during steel rolling has improved 23.84%.
Embodiment 4
Carbon silicomanganese Chrome metal powder cast steel material during at first melting manufacturing excavator bucket teeth is used under atmospheric environment with 350 kilograms of medium-frequency induction furnaces carries out the stokehold chemical composition analysis before steel fusant is come out of the stove.After its main alloy element (C, Si, Mn, Cr etc.) reaches the composition requirement, in stove, use the 0.18%Al pre-deoxidation, and with behind the 0.22%Si-Ca alloy final deoxygenation, do not skim, directly steel fusant 3 is injected ladle 2, the Yttrium base rare earth and the ferrotianium that add particle diameter 3mm～8mm in the ladle in advance, wherein the Yttrium base rare earth add-on is 0.35% of a steel fusant, the ferrotianium add-on is 0.17% of a steel fusant.Make the steel fusant surface coverage have one deck and atmosphere to play the slag blanket 1 of isolation and insulation effect.Carry out the Argon purifying treatment by ceramic porous porous plug 4 centering carbon silicomanganese Chrome metal powder cast steel molten steel then.Argon flow amount is 27L/min during Argon, argon pressure 9MPa, and argon blowing time 4min, molten steel leaves standstill 2.5min after the Argon.After the molten steel Argon purifies, continue in steel fusant, to be blown into nitrogen, make steel fusant realize the nitrogen microalloying through ceramic porous porous plug 4.When steel fusant nitrogen flushing microalloying is handled, nitrogen flow 15L/min, nitrogen pressure 17MPa, nitrogen flushing time 8min, steel fusant can be realized the microalloying of nitrogen well.After steel fusant is blown into nitrogen, will with the element reactions such as titanium, aluminium that add in advance in the steel fusant, generate tiny fine particles such as TiN, AlN, fine particles such as TiN, AlN can work to solidify core, thereby can refinement iron and steel solidified structure, improve the performance of ferrous materials.To pour into the wax-pattern casting mold through the molten steel after purification and the processing of nitrogen microalloying, make excavator bucket teeth, under as cast condition, test inclusion content, find that inclusion content only is 0.037%, and organize tiny, foundry goods is tested its mechanical property through after oil quenchinng and the temper, compares with not purifying with the nitrogen microalloying, tensile strength is by 1364MPa, be increased to 1618MPa, increasing degree reaches 18.62%, and impelling strength is by 127.7J/cm
2, be increased to 176.4J/cm
2, increasing degree reaches 38.14%, and changes in hardness is not obvious, all reach 53～55HRC, used the excavator bucket teeth of processing and manufacturing of the present invention, be used for broken quartzy rock, compare with common middle carbon silicomanganese Chrome metal powder cast steel, the excavation amount of quartzy rock has increased by 29.52%.
Claims (3)
1, the method for a kind of purification of wear-resistant steel fusant and alloying, it is characterized in that, this method is carried out aluminium pre-deoxidation and silicon-calcium alloy final deoxygenation to the steel fusant of melting under the normal atmospheric environment, during the steel fusant pre-deoxidation, the add-on of aluminium is 0.10%～0.40% of a steel fusant, and the add-on of silicon-calcium alloy is 0.12%～0.25% of a steel fusant during final deoxygenation; Do not skim after the deoxidation, directly steel fusant is injected ladle, the Yttrium base rare earth quantity that adds in advance in the ladle is 0.15%～0.40% of steel fusant, ferrotianium quantity is 0.15%～0.40% of steel fusant, before the metal melt cast, carry out the purifying treatment of Argon and the microalloying processing of nitrogen flushing successively by the porous plug that is installed in ladle bottom;
During steel fusant Argon purifying treatment, select argon flow amount 10L/min～30L/min, argon pressure 8MPa～20MPa, argon blowing time 3min～10min; Steel fusant leaves standstill 2min～5min after the Argon.
When the steel fusant nitrogen flushing is handled, select nitrogen flow 12L/min～30L/min, nitrogen pressure 10MPa～20MPa, nitrogen flushing time 5min～12min.
2. the method for the purification of wear-resistant steel fusant as claimed in claim 1 and alloying is characterized in that, the particle size of described Yttrium base rare earth and ferrotianium is 3mm～8mm.
3. the method for the purification of wear-resistant steel fusant as claimed in claim 1 and alloying is characterized in that, the described porous plug that is installed in ladle bottom adopts ceramic material.
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| CN103184315A (en) * | 2011-12-30 | 2013-07-03 | 斗山重工业株式会社 | Porous plug, device and method for manufacturing high nitrogen steel using same |
| CN103882182A (en) * | 2014-03-21 | 2014-06-25 | 广州有色金属研究院 | Heat-resistant steel melt purification method |
| CN104001907A (en) * | 2014-06-13 | 2014-08-27 | 四川法拉特不锈钢铸造有限公司 | Method for refining primary grain size of casting |
| CN105603157A (en) * | 2011-12-30 | 2016-05-25 | 斗山重工业株式会社 | A porous plug, apparatuses for manufacturing high nitrogen steels using the same and a method thereof |
| CN106001507A (en) * | 2016-07-19 | 2016-10-12 | 上海华培动力科技有限公司 | Low-pressure casting process for turbine shell of turbocharger |
| CN113549733A (en) * | 2021-06-11 | 2021-10-26 | 中国科学院金属研究所 | Bottom argon blowing method for high-temperature alloy master alloy purification smelting |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU627172A1 (en) * | 1977-04-04 | 1978-10-05 | Московский Ордена Трудового Красного Знамени Институт Стали И Сплавов | Method of steel smelting and smelting titanium-alloyed alloys |
| JP2005307234A (en) * | 2004-04-19 | 2005-11-04 | Nisshin Steel Co Ltd | Ferritic stainless steel sheet having excellent ridging resistance and surface characteristic and method for manufacturing the same |
| CN1261607C (en) * | 2004-12-15 | 2006-06-28 | 宁波浙东精密铸造有限公司 | Strongtough high gilicon cast steel and its manufacturing method |
| CN100449027C (en) * | 2005-06-09 | 2009-01-07 | 关铁 | High strength abrasion resistant steel and method for producing the same |
-
2006
- 2006-09-01 CN CNB2006101050855A patent/CN100434538C/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103184315A (en) * | 2011-12-30 | 2013-07-03 | 斗山重工业株式会社 | Porous plug, device and method for manufacturing high nitrogen steel using same |
| CN105603157A (en) * | 2011-12-30 | 2016-05-25 | 斗山重工业株式会社 | A porous plug, apparatuses for manufacturing high nitrogen steels using the same and a method thereof |
| CN103882182A (en) * | 2014-03-21 | 2014-06-25 | 广州有色金属研究院 | Heat-resistant steel melt purification method |
| CN103882182B (en) * | 2014-03-21 | 2016-01-20 | 广州有色金属研究院 | A kind of high temperature steel cleaning molten method |
| CN104001907A (en) * | 2014-06-13 | 2014-08-27 | 四川法拉特不锈钢铸造有限公司 | Method for refining primary grain size of casting |
| CN106001507A (en) * | 2016-07-19 | 2016-10-12 | 上海华培动力科技有限公司 | Low-pressure casting process for turbine shell of turbocharger |
| CN106001507B (en) * | 2016-07-19 | 2018-06-15 | 上海华培动力科技股份有限公司 | A kind of low-pressure casting process for turbocharger turbine shell |
| CN113549733A (en) * | 2021-06-11 | 2021-10-26 | 中国科学院金属研究所 | Bottom argon blowing method for high-temperature alloy master alloy purification smelting |
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