CN107916375A - Founding materials and its casting technique for casting wear-resistant centrifugal cylinder - Google Patents

Founding materials and its casting technique for casting wear-resistant centrifugal cylinder Download PDF

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Publication number
CN107916375A
CN107916375A CN201711189172.8A CN201711189172A CN107916375A CN 107916375 A CN107916375 A CN 107916375A CN 201711189172 A CN201711189172 A CN 201711189172A CN 107916375 A CN107916375 A CN 107916375A
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CN
China
Prior art keywords
casting
centrifugal cylinder
wear
iron melt
founding materials
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Pending
Application number
CN201711189172.8A
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Chinese (zh)
Inventor
刘文昭
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Changzhou City Kai Bright Casting Factory (general Partnership)
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Changzhou City Kai Bright Casting Factory (general Partnership)
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Priority to CN201711189172.8A priority Critical patent/CN107916375A/en
Publication of CN107916375A publication Critical patent/CN107916375A/en
Pending legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/02—Sand moulds or like moulds for shaped castings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/12—Treating moulds or cores, e.g. drying, hardening
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D13/00—Centrifugal casting; Casting by using centrifugal force
    • B22D13/10—Accessories for centrifugal casting apparatus, e.g. moulds, linings therefor, means for feeding molten metal, cleansing moulds, removing castings
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/004—Heat treatment of ferrous alloys containing Cr and Ni
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/005—Heat treatment of ferrous alloys containing Mn
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/008—Heat treatment of ferrous alloys containing Si
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C33/00—Making ferrous alloys
    • C22C33/04—Making ferrous alloys by melting
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/58—Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

Abstract

The invention discloses a kind of founding materials and its casting technique for casting wear-resistant centrifugal cylinder, it is through being made casting mold, molding sand drying；Selection casting dispensing；It is original iron melt that dispensing, which will be cast, to be fitted into melting in intermediate frequency vaccum sensitive stove；The pretreating agent based on Cr, supplemented by Ni is added, molten casting iron is met the requirement of founding materials chemical composition；First time inoculation is carried out, then carries out second of inoculation；Cast, pouring temperature are 1350 ~ 1450 DEG C；Casting is taken out after insulation cooling, dead head is then removed, is quenched, is made annealing treatment；Last casting obtains centrifugal cylinder finished product through blast cleaning and mechanical processing, and examines storage.Centrifugal cylinder obtained by the present invention has not only reached technical requirements in plasticity and intensity, but also substantially increases the wear-resisting property of centrifugal cylinder, so as to improve the comprehensive mechanical performance of centrifugal cylinder, extends the service life of centrifugal cylinder.

Description

Founding materials and its casting technique for casting wear-resistant centrifugal cylinder
Technical field
The present invention relates to metal casting technique field, relates in particular to a kind of casting material for casting wear-resistant centrifugal cylinder Material and its casting technique.
Background technology
Centrifugal cylinder is a kind of circular thin-wall porous member, because use environment is severe, it is to the material for casting centrifugal cylinder Material proposes more special requirement, and not requiring nothing more than it has higher plasticity and higher intensity, and it is higher to require it to have Wearability, but the comprehensive mechanical performance of the centrifugal cylinder cast at present with conventional cast material is poor, and plasticity and intensity are poor, resistance to Performance deficiency is ground, at present, the service life of the centrifugal cylinder cast using conventional founding materials is 1~2 day, its failure mode Mainly wear, show the centrifugal cylinder wear-resisting property deficiency that common founding materials is cast.
The content of the invention
The defects of it is an object of the invention to overcome the above-mentioned prior art, there is provided kind is a kind of for casting wear-resistant centrifugal cylinder Founding materials and its casting technique.Not only reach technical requirements in plasticity and intensity, but also substantially increase centrifugal cylinder Wear-resisting property, so as to improve the comprehensive mechanical performance of centrifugal cylinder, extends the service life of centrifugal cylinder.
To achieve the above object, present invention employs following technical solution：
A kind of founding materials for casting wear-resistant centrifugal cylinder, using iron as primary raw material, and be equipped with carbon, silicon, manganese, sulphur, phosphorus, chromium, Molybdenum, nickel, copper are auxiliary material, and melting and casting forms after preparation, it is characterised in that each chemical component weight percentage tool in liquation Body is:C 0.32~0.4%；Si 0.6~0.8%, Mn 1.7~2.0%, S<0.010%, P<0.02%, Cr 1.4~ 1.7%, Ni 0.9~1.1%, Mo 0.6~0.8%, Cu 2.0~3.0%, surplus Fe.
As the improvement to above-mentioned technical proposal, in the above-mentioned founding materials for casting wear-resistant centrifugal cylinder, it is each chemistry into Point percetage by weight is specially C 0.36%；Si 0.7%, Mn 1.8%, S<0.010%, P<0.02%, Cr 1.5%, Ni 1.0%, Mo 0.7%, Cu 2.5%, surplus Fe.
The present invention provides the casting technique of the founding materials casting wear-resistant centrifugal cylinder using the present invention, the founder in the lump The step of skill is：
（1）, casting mold is made as Modeling Material using molding sand and core sand, before casting mold is made, first the molding sand in Modeling Material is placed in Dried in baker；
（2）, selection casting dispensing, including foundry return, iron filings and steel scrap, and casting dispensing is subjected to flame baking, the steel scrap For carbon steel or mild steel, the iron filings are cast iron waste material；
（3）, by foundry return, iron filings and the steel scrap in the casting dispensing after flame baking be sequentially loaded into intermediate frequency vaccum sensitive stove melt Refining as original iron melt, successively added when being fitted into casting dispensing according to the principle of lower tight upper pine in electric furnace, smelting temperature is 1450 DEG C, and Copper is added in original iron melt, the chemical component weight percentage for making copper is 2.0~3.0%；Circuit work(is incrementally increased in fusion process Rate, and often carry out smashing material operation；
（4）, step（3）In original iron melt pretreating agent based on Cr, supplemented by Ni is added into electric furnace before coming out of the stove, be allowed to accord with Molten iron chemical composition percetage by weight is made in alloying:C 0.32~0.4%；Si 0.6~0.8%, Mn 1.7~2.0%, S< 0.010%, P<0.02%, Cr 1.4~1.7%, Ni 0.9~1.1%, Mo 0.6~0.8%；Cu 2.0~3.0%；
（5）, to step（4）In skim after original iron melt in add inovulant carry out first time inoculation, then by original iron melt Pour into sprue cup, and add sulphur oxygen inovulant into sprue cup and carry out second of inoculation, twice after inoculation Perlite slag making is dispensed on original iron melt again to purify original iron melt and skim at once；
（6）, by step（5）In skim after original iron melt stand a period of time in sprue cup after in step（1）In manufactured casting Poured into a mould in type, pouring temperature is 1350~1450 DEG C；
（7）, insulation cooling after take out casting, then remove dead head, obtained casting is carried out successively 650 DEG C quenching, protect Temperature 3 it is small when, temperature be raised to 1020 DEG C insulation 2 it is small when, temperature drop to 980 DEG C insulation 8 it is small when after be air-cooled to room temperature, it is then tempered Room temperature is air-cooled to after when 480 DEG C of insulations 10 are small, its heating rate is all 50 DEG C/h；
（8）, by step（7）Casting after middle processing obtains centrifugal cylinder finished product through blast cleaning and mechanical processing, and examines storage.
Compared with prior art, the beneficial effects of the invention are as follows：
Choose the present invention for casting wear-resistant centrifugal cylinder founding materials and coordinate casting technique provided by the present invention, it is made The service life of the centrifugal cylinder obtained was brought up to 4~5 days from original 1~2 day, and centrifugal cylinder not only reaches in plasticity and intensity Technical requirements, and the wear-resisting property of centrifugal cylinder is substantially increased, so as to improve the comprehensive mechanical performance of centrifugal cylinder, extend centrifugation The service life of cylinder.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, below in conjunction with specific embodiment pair The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and It is not used in restriction invention.
Embodiment one
（1）, casting mold is made as Modeling Material using molding sand and core sand, before casting mold is made, first the molding sand in Modeling Material is placed in Dried in baker；
（2）, selection casting dispensing, including foundry return, iron filings and steel scrap, and casting dispensing is subjected to flame baking, the steel scrap For carbon steel or mild steel, the iron filings are cast iron waste material；
（3）, by foundry return, iron filings and the steel scrap in the casting dispensing after flame baking be sequentially loaded into intermediate frequency vaccum sensitive stove melt Refining as original iron melt, successively added when being fitted into casting dispensing according to the principle of lower tight upper pine in electric furnace, smelting temperature is 1450 DEG C, and Copper is added in original iron melt, the chemical component weight percentage for making copper is 2.0%；Circuit power is incrementally increased in fusion process, and Often carry out smashing material operation；
（4）, step（3）In original iron melt pretreating agent based on Cr, supplemented by Ni is added into electric furnace before coming out of the stove, be allowed to accord with Molten iron chemical composition percetage by weight is made in alloying:C 0.32%；Si 0.6%, Mn 1.7~2.0%, S<0.010%, P< 0.02%, Cr 1.4%, Ni 0.9%, Mo 0.6%；Cu 2.0%；
（5）, to step（4）In skim after original iron melt in add inovulant carry out first time inoculation, then by original iron melt Pour into sprue cup, and add sulphur oxygen inovulant into sprue cup and carry out second of inoculation, twice after inoculation Perlite slag making is dispensed on original iron melt again to purify original iron melt and skim at once；
（6）, by step（5）In skim after original iron melt stand a period of time in sprue cup after in step（1）In manufactured casting Poured into a mould in type, pouring temperature is 1350 DEG C；
（7）, insulation cooling after take out casting, then remove dead head, obtained casting is carried out successively 650 DEG C quenching, protect Temperature 3 it is small when, temperature be raised to 1020 DEG C insulation 2 it is small when, temperature drop to 980 DEG C insulation 8 it is small when after be air-cooled to room temperature, it is then tempered Room temperature is air-cooled to after when 480 DEG C of insulations 10 are small, its heating rate is all 50 DEG C/h；
（8）, by step（7）Casting after middle processing obtains centrifugal cylinder finished product through blast cleaning and mechanical processing, and examines storage.
Embodiment two：
（1）, casting mold is made as Modeling Material using molding sand and core sand, before casting mold is made, first the molding sand in Modeling Material is placed in Dried in baker；
（2）, selection casting dispensing, including foundry return, iron filings and steel scrap, and casting dispensing is subjected to flame baking, the steel scrap For carbon steel or mild steel, the iron filings are cast iron waste material；
（3）, by foundry return, iron filings and the steel scrap in the casting dispensing after flame baking be sequentially loaded into intermediate frequency vaccum sensitive stove melt Refining as original iron melt, successively added when being fitted into casting dispensing according to the principle of lower tight upper pine in electric furnace, smelting temperature is 1450 DEG C, and Copper is added in original iron melt, the chemical component weight percentage for making copper is 3.0%；Circuit power is incrementally increased in fusion process, and Often carry out smashing material operation；
（4）, step（3）In original iron melt pretreating agent based on Cr, supplemented by Ni is added into electric furnace before coming out of the stove, be allowed to accord with Molten iron chemical composition percetage by weight is made in alloying:C 0.4%；Si 0.8%, Mn 2.0%, S<0.010%, P<0.02%, Cr 1.7%, Ni 1.1%, Mo 0.8%；Cu 3.0%；
（5）, to step（4）In skim after original iron melt in add inovulant carry out first time inoculation, then by original iron melt Pour into sprue cup, and add sulphur oxygen inovulant into sprue cup and carry out second of inoculation, twice after inoculation Perlite slag making is dispensed on original iron melt again to purify original iron melt and skim at once；
（6）, by step（5）In skim after original iron melt stand a period of time in sprue cup after in step（1）In manufactured casting Poured into a mould in type, pouring temperature is 1450 DEG C；
（7）, insulation cooling after take out casting, then remove dead head, obtained casting is carried out successively 650 DEG C quenching, protect Temperature 3 it is small when, temperature be raised to 1020 DEG C insulation 2 it is small when, temperature drop to 980 DEG C insulation 8 it is small when after be air-cooled to room temperature, it is then tempered Room temperature is air-cooled to after when 480 DEG C of insulations 10 are small, its heating rate is all 50 DEG C/h；
（8）, by step（7）Casting after middle processing obtains centrifugal cylinder finished product through blast cleaning and mechanical processing, and examines storage.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention With within principle, any modification, equivalent replacement, improvement and so on, should all be included in the protection scope of the present invention god.

Claims (3)

1. a kind of founding materials for casting wear-resistant centrifugal cylinder, using iron as primary raw material, and be equipped with carbon, silicon, manganese, sulphur, phosphorus, Chromium, molybdenum, nickel, copper are auxiliary material, and melting and casting forms after preparation, it is characterised in that each chemical component weight percentage in liquation Number is specially:C 0.32~0.4%；Si 0.6~0.8%, Mn 1.7~2.0%, S<0.010%, P<0.02%, Cr 1.4~ 1.7%, Ni 0.9~1.1%, Mo 0.6~0.8%, Cu 2.0~3.0%, surplus Fe.
2. the founding materials according to claim 1 for casting wear-resistant centrifugal cylinder, it is characterised in that：It is above-mentioned to be used to cast In the founding materials of wear-resisting centrifugal cylinder, each chemical component weight percentage is specially C 0.36%；Si 0.7%, Mn 1.8%, S< 0.010%, P<0.02%, Cr 1.5%, Ni 1.0%, Mo 0.7%, Cu 2.5%, surplus Fe.
3. a kind of founding materials casting wear-resistant for casting wear-resistant centrifugal cylinder using described in the claim 1 or 2 centrifuges The casting technique of cylinder, it is characterised in that：The step of casting technique is：
（1）, casting mold is made as Modeling Material using molding sand and core sand, before casting mold is made, first the molding sand in Modeling Material is placed in Dried in baker；
（2）, selection casting dispensing, including foundry return, iron filings and steel scrap, and casting dispensing is subjected to flame baking, the steel scrap For carbon steel or mild steel, the iron filings are cast iron waste material；
（3）, by foundry return, iron filings and the steel scrap in the casting dispensing after flame baking be sequentially loaded into intermediate frequency vaccum sensitive stove melt Refining as original iron melt, successively added when being fitted into casting dispensing according to the principle of lower tight upper pine in electric furnace, smelting temperature is 1450 DEG C, and Copper is added in original iron melt, the chemical component weight percentage for making copper is 2.0~3.0%；Circuit work(is incrementally increased in fusion process Rate, and often carry out smashing material operation；
（4）, step（3）In original iron melt pretreating agent based on Cr, supplemented by Ni is added into electric furnace before coming out of the stove, be allowed to accord with Molten iron chemical composition percetage by weight is made in alloying:C 0.32~0.4%；Si 0.6~0.8%, Mn 1.7~2.0%, S< 0.010%, P<0.02%, Cr 1.4~1.7%, Ni 0.9~1.1%, Mo 0.6~0.8%；Cu 2.0~3.0%；
（5）, to step（4）In skim after original iron melt in add inovulant carry out first time inoculation, then by original iron melt Pour into sprue cup, and add sulphur oxygen inovulant into sprue cup and carry out second of inoculation, twice after inoculation Perlite slag making is dispensed on original iron melt again to purify original iron melt and skim at once；
（6）, by step（5）In skim after original iron melt stand a period of time in sprue cup after in step（1）In manufactured casting Poured into a mould in type, pouring temperature is 1350~1450 DEG C；
（7）, insulation cooling after take out casting, then remove dead head, obtained casting is carried out successively 650 DEG C quenching, protect Temperature 3 it is small when, temperature be raised to 1020 DEG C insulation 2 it is small when, temperature drop to 980 DEG C insulation 8 it is small when after be air-cooled to room temperature, it is then tempered Room temperature is air-cooled to after when 480 DEG C of insulations 10 are small, its heating rate is all 50 DEG C/h；
（8）, by step（7）Casting after middle processing obtains centrifugal cylinder finished product through blast cleaning and mechanical processing, and examines storage.
CN201711189172.8A 2017-11-24 2017-11-24 Founding materials and its casting technique for casting wear-resistant centrifugal cylinder Pending CN107916375A (en)

Priority Applications (1)

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CN201711189172.8A CN107916375A (en) 2017-11-24 2017-11-24 Founding materials and its casting technique for casting wear-resistant centrifugal cylinder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201711189172.8A CN107916375A (en) 2017-11-24 2017-11-24 Founding materials and its casting technique for casting wear-resistant centrifugal cylinder

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111215577A (en) * 2019-11-26 2020-06-02 山西晋武能源有限公司 Production process of stirring pot before molding of cast briquette
CN116511423A (en) * 2023-04-26 2023-08-01 盐城东皇铸造有限公司 Casting process for casting wear-resistant centrifugal cylinder

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111215577A (en) * 2019-11-26 2020-06-02 山西晋武能源有限公司 Production process of stirring pot before molding of cast briquette
CN116511423A (en) * 2023-04-26 2023-08-01 盐城东皇铸造有限公司 Casting process for casting wear-resistant centrifugal cylinder

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Application publication date: 20180417