CN107245642B - A kind of equalizing suspension system casting with spheroidal graphite cast-iron plastics on new materials with and preparation method thereof - Google Patents
A kind of equalizing suspension system casting with spheroidal graphite cast-iron plastics on new materials with and preparation method thereof Download PDFInfo
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- CN107245642B CN107245642B CN201710515186.8A CN201710515186A CN107245642B CN 107245642 B CN107245642 B CN 107245642B CN 201710515186 A CN201710515186 A CN 201710515186A CN 107245642 B CN107245642 B CN 107245642B
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C37/00—Cast-iron alloys
- C22C37/10—Cast-iron alloys containing aluminium or silicon
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/06—Permanent moulds for shaped castings
- B22C9/068—Semi-permanent moulds
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/08—Making cast-iron alloys
- C22C33/10—Making cast-iron alloys including procedures for adding magnesium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C37/00—Cast-iron alloys
- C22C37/04—Cast-iron alloys containing spheroidal graphite
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C37/00—Cast-iron alloys
- C22C37/06—Cast-iron alloys containing chromium
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
The purpose of the present invention is to provide a kind of equalizing suspension system casting with spheroidal graphite cast-iron plastics on new materials with and preparation method thereof, for producing the casting of high-intensitive, high tenacity, and achieve the effect that improve its fatigue strength.A kind of equalizing suspension system casting spheroidal graphite cast-iron plastics on new materials, preparing raw material includes: the Q10 pig iron, carburant, steel scrap containing chromium, foundry returns, magnesium-rare earth, ferrosilicon, cathode copper, tin, nodulizer, inovulant；The following steps are included: raw material melting, spheroidising and current-following inoculation processing, casting.The medicine have the advantages that high-intensitive, high tenacity and the uniform equalizing suspension system cast product of interior tissue can be produced.
Description
Technical field
The present invention relates to casting technology field, specifically a kind of equalizing suspension system casting spheroidal graphite cast-iron plastics on new materials and
Preparation method.
Background technique
With the rapid development of automobile industry, user is to the safety of heavy truck, lightweight, energy conservation and environmental protection, quality-high and inexpensive etc.
Aspect requires increasingly strict, is especially improving vehicle delivered payload capability, more urgent in the demand that Duola hurries up.In this way, each whole
Depot is to win the market, and to the material capability of auxiliary component, more stringent requirements are proposed, how to produce high-intensitive, high tenacity
Casting meet market, become the new issue of each castings production quotient.
Summary of the invention
The purpose of the present invention is to provide a kind of equalizing suspension system casting with spheroidal graphite cast-iron plastics on new materials with and preparation method thereof, use
In producing the casting of high-intensitive, high tenacity, and achieve the effect that improve its fatigue strength.
The technical scheme adopted by the invention to solve the technical problem is that:
A kind of equalizing suspension system casting spheroidal graphite cast-iron plastics on new materials, prepare raw material include: the Q10 pig iron, it is carburant, useless containing chromium
Steel, foundry returns, magnesium-rare earth, ferrosilicon, cathode copper, tin, nodulizer, inovulant；Its chemical element component and its matter for containing
Measure percentage are as follows:
C3.7%-3.8%, Si2.4%-2.6%, Mn0.3%-0.4%, P≤0.03%, S0.01%-0.02%,
Cu0.55%-0.60%, Cr0.09%-0.14%, Sn0.04%-0.05%, Mg0.035%-0.055%, Re0.025%-
0.035%, remaining is Fe.
This programme, the additional amount of each raw material can choose Q10 pig iron additional amount and account for 10%, foundry returns and account for 10%, carburant
Additional amount account for 3.5%, magnesium-rare earth additional amount account for 1%, cathode copper additional amount account for 0.6%, tin additional amount account for 0.04%, remaining
For steel scrap containing chromium and ferrosilicon.
In the present solution, carburant uptake is not less than 88%, sulfur content is less than or equal to 0.4%.
A kind of equalizing suspension system casting spheroidal graphite cast-iron plastics on new materials preparation method, comprising the following steps:
(1) raw material melting: will prepare raw material and 1T electrosmelting of intermediate frequency be added, using high frequency infrared ray carbon sulphur analyser, insertion
The iron liquid of chemical component qualification is made in the read-only spectrometer analysis molten iron composition of formula electronic thermometric gun, Nike；
(2) spheroidising and current-following inoculation processing: one ton of ladle of dam-type is used, nodulizer ball is added in ladle
Change is bred；Then it is poured, inovulant current-following inoculation is added in casting, inovulant mass percent dosage is controlled 0.2%；Iron
Water tapping temperature is controlled at 1560 ± 10 DEG C；
(3) it is poured: selecting device for sand coated iron mould formative technology, ceramic filter, ceramics are arranged in the running gate system of device for sand coated iron mould case
The core inlaying chill of filter.
In the above-mentioned methods, magnesium-rare earth machining iron filings covering.
In the above-mentioned methods, ferrosilicon divides spheroidising and current-following inoculation process to be added twice according to the weight of 4:3.
This programme beneficial effect is:
Micro addition chromium is brought by waste steel ingredient, stable content, and individually need not be stored and be protected, to environment and operation
Person, which can not make, directly to be injured；Suitable cathode copper, tin etc. are added in fusion process, fully ensures that trace alloying element chromium, tin
Complex intensifying effect, promote the generation of pearlite, realize the material of tensile strength >=800 under as cast condition, elongation percentage >=5%
Can, obtain high-intensitive, high tenacity and the uniform equalizing suspension system cast product of interior tissue；
With in furnace plus the multiple compound inoculated method such as Si, spheroidization and inoculation, current-following inoculation, and use device for sand coated iron mould moulding
Technique can be improved refinement crystal grain, improve the strength of materials.
Specific embodiment
Embodiment 1
A kind of equalizing suspension system casting spheroidal graphite cast-iron plastics on new materials, prepare raw material include: the Q10 pig iron, it is carburant, useless containing chromium
Steel, magnesium-rare earth, ferrosilicon, cathode copper, tin, nodulizer, inovulant；Its chemical element component and its mass percent for containing
Are as follows:
C3.7%, Si2.5%, Mn0.4%, P0.01%, S0.015%, Cu0.60%, Cr0.09%, Sn0.045%,
Mg0.055%, Re0.025%, remaining is Fe.Wherein carburant uptake 88%, sulfur content 0.2%.
High-carbon, low-phosphorous, low-sulfur high-quality Q10 pig iron additional amount is selected to account for 10%, foundry returns and account for 10%, carburant additional amount
It accounts for 3.5%, magnesium-rare earth additional amount and accounts for 1%, cathode copper additional amount and account for that 0.6%, tin additional amount accounts for 0.04%, remaining is containing chromium
Steel scrap.Wherein foundry returns is the furnace charge that the old metal such as waste casting, cast gate, the riser of foundry send smelting furnace remelting back to.
Micro addition chromium is brought by waste steel ingredient, stable content, and individually need not be stored and be protected, to environment and operation
Person, which can not make, directly to be injured；Suitable cathode copper, tin etc. are added in fusion process, fully ensures that trace alloying element chromium, tin
Complex intensifying effect, promote the generation of pearlite, realize the material of tensile strength >=800 under as cast condition, elongation percentage >=5%
Can, obtain high-intensitive, high tenacity and the uniform equalizing suspension system cast product of interior tissue.
A kind of equalizing suspension system casting spheroidal graphite cast-iron plastics on new materials preparation method, comprising the following steps:
(1) raw material melting: raw material will be prepared, 1T electrosmelting of intermediate frequency is added, be conducive to the adjustment of ingredient and the control to temperature
System；Using high frequency infrared ray carbon sulphur analyser, inserted electronic temperature-measuring gun, the read-only spectrometer analysis molten iron composition of Nike, slap in time
Carbon and silicon equivalent is held, the iron liquid of chemical component qualification is made.When raw material is added, magnesium-rare earth is cut iron pin with bushel iron and is covered.
(2) spheroidising and current-following inoculation processing: one ton of ladle of dam-type is used, nodulizer ball is added in ladle
Change is bred；Then it is poured, inovulant current-following inoculation is added in casting, inovulant dosage is controlled 0.2%；Molten iron tapping temperature
Control is at 1550 DEG C；Guarantee reaching for plasticity index.
In spheroidising and current-following inoculation treatment process, ferrosilicon divides spheroidising and current-following inoculation according to the weight of 4:3
Process is added twice.
(3) it is poured: selecting device for sand coated iron mould formative technology to carry out moulding, ceramic mistake is set in the running gate system of device for sand coated iron mould case
Filter disc.Ceramic filter can filter out the field trash in casting, reduce the gas in casting, reduce disorderly when metal liquid stream fills type
Process degree improves the mobility of molten metal, increases the mold-filling capacity and feeding capacity of casting, reduces the surface defect of casting.
The core inlaying chill of ceramic filter can reinforce festering to the type core of the chill effect and ceramic filter of molten metal,
Prevent the generation of Shrinkage Porosity, sand hole defect.
Equalizing suspension system casting lower part in the present embodiment is more thick big, and thick general goal is set there are four column, can be vertical at four
Vent wire is set on device for sand coated iron mould case at column molding, the stomata generated when for eliminating casting process.The device for sand coated iron mould case
Including top case and drag box, it is equipped with open riser in top case, is uniformly provided with 3 blind risers in drag box；The running gate system
Ingate using flat, the cross-sectional area of ingate is less than the runner gate cross-sectional area of running gate system；Can to avoid due to
Casting shrinkage cavity phenomenon in ingate end caused by pyrocondensation.Furthermore it is possible to the shrinkage defect of thick big heat energy-saving position be eliminated, to obtain
Obtain the casting of even tissue.
Embodiment 2
A kind of equalizing suspension system casting spheroidal graphite cast-iron plastics on new materials, prepare raw material include: the Q10 pig iron, it is carburant, useless containing chromium
Steel, magnesium-rare earth, ferrosilicon, cathode copper, tin, nodulizer, inovulant；Its chemical element component and its mass percent for containing
Are as follows:
C3.75%, Si2.6%, Mn0.3%, P0.02%, S0.02%, Cu0.55%, Cr0.115%, Sn0.05%,
Mg0.035%, Re0.03%, remaining is Fe.Wherein carburant uptake 90%, sulfur content 0.4%.
High-carbon, low-phosphorous, low-sulfur high-quality Q10 pig iron additional amount is selected to account for 10%, foundry returns and account for 10%, carburant additional amount
It accounts for 3.5%, magnesium-rare earth additional amount and accounts for 1%, cathode copper additional amount and account for that 0.6%, tin additional amount accounts for 0.04%, remaining is containing chromium
Steel scrap and ferrosilicon.
A kind of equalizing suspension system casting spheroidal graphite cast-iron plastics on new materials preparation method, comprising the following steps:
(1) raw material melting: raw material will be prepared, 1T electrosmelting of intermediate frequency is added, be conducive to the adjustment of ingredient and the control to temperature
System；Using high frequency infrared ray carbon sulphur analyser, inserted electronic temperature-measuring gun, the read-only spectrometer analysis molten iron composition of Nike, slap in time
Carbon and silicon equivalent is held, the iron liquid of chemical component qualification is made.When raw material is added, magnesium-rare earth is cut iron pin with bushel iron and is covered.
(2) spheroidising and current-following inoculation processing: one ton of ladle of dam-type is used, nodulizer ball is added in ladle
Change is bred；Then it is poured, inovulant current-following inoculation is added in casting, inovulant dosage is controlled 0.2%；Molten iron tapping temperature
Control is at 1560 DEG C；Guarantee reaching for plasticity index.
In spheroidising and current-following inoculation treatment process, ferrosilicon divides spheroidising and current-following inoculation according to the weight of 4:3
Process is added twice.
(3) it is poured: selecting device for sand coated iron mould formative technology to carry out moulding, ceramic mistake is set in the running gate system of device for sand coated iron mould case
Filter disc.
Embodiment 3
A kind of equalizing suspension system casting spheroidal graphite cast-iron plastics on new materials, prepare raw material include: the Q10 pig iron, it is carburant, useless containing chromium
Steel, magnesium-rare earth, ferrosilicon, cathode copper, tin, nodulizer, inovulant；Its chemical element component and its mass percent for containing
Are as follows:
C3.8%, Si2.4%, Mn0.35%, P0.03%, S0.01%, Cu0.575%, Cr0.14%, Sn0.04%,
Mg0.045%, Re0.035%, remaining is Fe.
Wherein carburant uptake 92%, sulfur content 0.3%.
High-carbon, low-phosphorous, low-sulfur high-quality Q10 iron quality percentage additional amount is selected to account for 10%, foundry returns quality percentage
3.5%, magnesium-rare earth mass percent additional amount is accounted for than accounting for 10%, carburant mass percent additional amount and accounts for 1%, cathode copper
Mass percent additional amount accounts for that 0.6%, tin mass percent additional amount accounts for 0.04%, remaining is steel scrap containing chromium and ferrosilicon.
A kind of equalizing suspension system casting spheroidal graphite cast-iron plastics on new materials preparation method, comprising the following steps:
(1) raw material melting: raw material will be prepared, 1T electrosmelting of intermediate frequency is added, be conducive to the adjustment of ingredient and the control to temperature
System；Using high frequency infrared ray carbon sulphur analyser, inserted electronic temperature-measuring gun, the read-only spectrometer analysis molten iron composition of Nike, slap in time
Carbon and silicon equivalent is held, the iron liquid of chemical component qualification is made.When raw material is added, magnesium-rare earth is cut iron pin with bushel iron and is covered.
(2) spheroidising and current-following inoculation processing: one ton of ladle of dam-type is used, nodulizer ball is added in ladle
Change is bred；Then it is poured, inovulant current-following inoculation is added in casting, inovulant dosage is controlled 0.2%；Molten iron tapping temperature
Control is at 1570 DEG C；Guarantee reaching for plasticity index.
In spheroidising and current-following inoculation treatment process, ferrosilicon divides spheroidising and current-following inoculation according to the weight of 4:3
Process is added twice.
(3) it is poured: selecting device for sand coated iron mould formative technology to carry out moulding, ceramic mistake is set in the running gate system of device for sand coated iron mould case
Filter disc.
Except for the technical features described in the specification, it all is technically known to those skilled in the art.
Above-mentioned, although the foregoing specific embodiments of the present invention is described with reference to the accompanying drawings, not protects model to the present invention
The limitation enclosed, based on the technical solution of the present invention, those skilled in the art, which do not need to pay for creative labor, to be done
Various modifications or changes out are still within the scope of the present invention.
Claims (5)
1. a kind of equalizing suspension system casting spheroidal graphite cast-iron plastics on new materials preparation method, which is characterized in that preparing raw material includes: Q10 raw
Iron, carburant, steel scrap containing chromium, foundry returns, magnesium-rare earth, ferrosilicon, cathode copper, tin, nodulizer, inovulant；Its change contained
Learn elemental composition and its mass percent are as follows:
C3.7%-3.8%, Si2.4%-2.6%, Mn0.3%-0.4%, P≤0.03%, S0.01%-0.02%,
Cu0.55%-0.60%, Cr0.09%-0.14%, Sn0.04%-0.05%, Mg0.035%-0.055%, RE 0.025%-
0.035%, remaining is Fe；
Preparation method, comprising the following steps:
(1) raw material melting: will prepare raw material and 1T electrosmelting of intermediate frequency be added, using high frequency infrared ray carbon sulphur analyser, plug-in type electricity
The iron liquid of chemical component qualification is made in the read-only spectrometer analysis molten iron composition of sub- temperature-measuring gun, Nike；
(2) spheroidising and current-following inoculation processing: one ton of ladle of dam-type is used, it is pregnant that nodulizer nodularization is added in ladle
It educates；Then it is poured, inovulant current-following inoculation is added in casting, inovulant mass percent dosage is controlled 0.2%；Molten iron goes out
Furnace temperature is controlled at 1560 ± 10 DEG C；
(3) it is poured: selecting device for sand coated iron mould formative technology, ceramic filter, ceramic filter is arranged in the running gate system of device for sand coated iron mould case
The core inlaying chill of piece.
2. a kind of equalizing suspension system casting spheroidal graphite cast-iron plastics on new materials preparation method according to claim 1, characterized in that institute
It states Q10 iron quality percentage additional amount and accounts for 10%, foundry returns mass percent and account for 10%, carburant mass percent additional amount
It accounts for 3.5%, magnesium-rare earth mass percent additional amount and accounts for 1%, electrolytic copper quality percentage additional amount and account for 0.6%, tin quality
Percentage additional amount accounts for 0.04%, remaining is steel scrap containing chromium and ferrosilicon.
3. a kind of equalizing suspension system casting spheroidal graphite cast-iron plastics on new materials preparation method according to claim 1, characterized in that institute
Carburant uptake is stated not less than 88%, sulfur content is less than or equal to 0.4%.
4. a kind of equalizing suspension system casting spheroidal graphite cast-iron plastics on new materials preparation method according to claim 1, characterized in that dilute
Soil bushel iron pin covering used for magnesium alloy.
5. a kind of equalizing suspension system casting spheroidal graphite cast-iron plastics on new materials preparation method according to claim 1, characterized in that silicon
Iron divides spheroidising and current-following inoculation process to be added twice according to the weight of 4:3.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710515186.8A CN107245642B (en) | 2017-06-29 | 2017-06-29 | A kind of equalizing suspension system casting with spheroidal graphite cast-iron plastics on new materials with and preparation method thereof |
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| CN201710515186.8A CN107245642B (en) | 2017-06-29 | 2017-06-29 | A kind of equalizing suspension system casting with spheroidal graphite cast-iron plastics on new materials with and preparation method thereof |
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| CN107245642B true CN107245642B (en) | 2019-05-10 |
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| CN112662937A (en) * | 2020-12-07 | 2021-04-16 | 安徽省隆兴铸造有限公司 | High-tensile-strength nodular cast iron and valve preparation method thereof |
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Non-Patent Citations (3)
| Title |
|---|
| "铸态QT800-5悬挂支架铸件的研制";张军 等;《现代铸铁》;20160531(第5期);第29页 |
| "铸态珠光体球铁QT800-2的试制研究";王冬生 等;《铸造》;19890630(第6期);第18，19页 |
| "铸态铜铬珠光体球铁曲轴的研制";宋麟玉 等;《现代铸铁》;19900228(第2期);第4页 |
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Denomination of invention: A new material of ductile iron for balanced suspension castings and its preparation method Effective date of registration: 20230627 Granted publication date: 20190510 Pledgee: Shandong Linqing Rural Commercial Bank Co.,Ltd. Pledgor: LINQING JINGUANG MACHINERY MANUFACTURING CO.,LTD. Registration number: Y2023980045575 |
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