CN107245642A - 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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- CN107245642A CN107245642A CN201710515186.8A CN201710515186A CN107245642A CN 107245642 A CN107245642 A CN 107245642A CN 201710515186 A CN201710515186 A CN 201710515186A CN 107245642 A CN107245642 A CN 107245642A
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- iron
- suspension system
- new materials
- spheroidal graphite
- graphite cast
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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
-
- 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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- Chemical & Material Sciences (AREA)
- 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
It is an object of the invention 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 intensity, high tenacity, and reach improve its fatigue strength effect.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；Comprise the following steps：Raw material melting, spheroidising and current-following inoculation processing, cast.Present invention has the advantages that：High intensity, 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 with spheroidal graphite cast-iron plastics on new materials and
Its preparation method.
Background technology
With the high speed development of automobile industry, user is to the security of heavy truck, lightweight, energy-conserving and environment-protective, quality-high and inexpensive etc.
Aspect requires increasingly strict, particularly more urgent on vehicle delivered payload capability, the demand that Duola hurries up is improved.So, it is each whole
Depot proposes higher requirement to the material capability of auxiliary component, how to produce high intensity, high tenacity to win the market
Casting meet market, new problem as each castings production business.
The content of the invention
It is an object of the invention 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 intensity, high tenacity, and reach the effect for improving 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, preparing raw material includes：It is the Q10 pig iron, 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
Measuring percentage is：
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 addition of each raw material can select Q10 pig iron additions to account for 10%, foundry returns and account for 10%, carburant
Addition account for 3.5%, magnesium-rare earth addition account for 1%, cathode copper addition account for 0.6%, tin addition account for 0.04%, remaining
For steel scrap containing chromium.
In this programme, carburant uptake is not less than 88%, and 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, comprises the following steps：
(1) raw material melting：Preparing raw material is added into 1T electrosmelting of intermediate frequency, using high frequency infrared ray carbon sulphur analyser, insertion
The read-only spectrometer analysis molten iron composition of formula electronic thermometric gun, Nike, is made the qualified iron liquid of chemical composition；
(2) spheroidising and current-following inoculation processing：Using one ton of ladle of dam-type, nodulizer ball is added in ladle
Change is bred；Then pour into a mould, inovulant current-following inoculation is added in cast, inovulant consumption is controlled 0.2%；Molten iron tapping temperature
Control is at 1560 ± 10 DEG C；
(3) pour into a mould：From device for sand coated iron mould formative technology, the running gate system of device for sand coated iron mould case sets ceramic filter, ceramics
The core inlaying chill of filter.
In the above-mentioned methods, magnesium-rare earth is covered with machining iron filings.
In the above-mentioned methods, ferrosilicon is according to 4:3 weight point spheroidising and current-following inoculation process are added twice.
This programme beneficial effect is：
Micro addition chromium is brought into by waste steel ingredient, its stable content, and individually need not be stored and be protected, to environment and operation
Person, which can not make, directly to be injured；Appropriate cathode copper, tin etc. are added in fusion process, trace alloying element chromium, tin is fully ensured that
Complex intensifying effect, promote pearlite generation, realize tensile strength >=800 under as cast condition, the material of elongation percentage >=5%
Can, obtain high intensity, high tenacity and the uniform equalizing suspension system cast product of interior tissue；
With in stove plus the repeatedly compound inoculated method, and use device for sand coated iron mould moulding such as Si, spheroidization and inoculation, current-following inoculation
Technique, it is possible to increase crystal grain thinning, the raising strength of materials.
Embodiment
Embodiment 1
A kind of equalizing suspension system casting spheroidal graphite cast-iron plastics on new materials, preparing raw material includes：It is the Q10 pig iron, carburant, useless containing chromium
Steel, magnesium-rare earth, ferrosilicon, cathode copper, tin, nodulizer, inovulant；Its chemical element component contained and its quality percentage
Than for：
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%.
10%, foundry returns, which is accounted for, from high-carbon, low-phosphorous, low-sulfur high-quality Q10 pig iron additions accounts for 10%, carburant addition
Account for 3.5%, magnesium-rare earth addition and account for 1%, cathode copper addition and account for that 0.6%, tin addition accounts for 0.04%, remaining is containing chromium
Steel scrap.Wherein foundry returns sends the furnace charge of smelting furnace remelting back to for old metal such as waste casting, cast gate, the rising heads of foundry.
Micro addition chromium is brought into by waste steel ingredient, its stable content, and individually need not be stored and be protected, to environment and operation
Person, which can not make, directly to be injured；Appropriate cathode copper, tin etc. are added in fusion process, trace alloying element chromium, tin is fully ensured that
Complex intensifying effect, promote pearlite generation, realize tensile strength >=800 under as cast condition, the material of elongation percentage >=5%
Can, obtain high intensity, 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, comprises the following steps：
(1) raw material melting：Preparing raw material is added into 1T electrosmelting of intermediate frequency, is conducive to the adjustment and the control to temperature of composition
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 qualified iron liquid of chemical composition is made.When adding raw material, magnesium-rare earth cuts the covering of iron pin with bushel iron.
(2) spheroidising and current-following inoculation processing：Using one ton of ladle of dam-type, nodulizer ball is added in ladle
Change is bred；Then pour into a mould, inovulant current-following inoculation is added in cast, inovulant consumption is controlled 0.2%；Molten iron tapping temperature
Control is at 1550 DEG C；Ensure reaching for plasticity index.
In spheroidising and current-following inoculation processing procedure, ferrosilicon is according to 4:3 weight point spheroidising and current-following inoculation
Process is added twice.
(3) pour into a mould：Carry out setting ceramic mistake in moulding, the running gate system of device for sand coated iron mould case from device for sand coated iron mould formative technology
Filter disc.Ceramic filter can filter out the field trash in casting, reduce the gas in casting, disorderly when reduction molten metal stream fills type
Flow 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 strengthen festering to the core of the chill effect of molten metal and ceramic filter,
Prevent Shrinkage Porosity, the generation of sand hole defect.
Equalizing suspension system casting bottom in the present embodiment is more thick big, and thick general goal, can be vertical at four provided with four columns
Vent wire is set on device for sand coated iron mould case at post shaping, the stomata produced for eliminating during casting process.The device for sand coated iron mould case
Including top case and drag box, it is provided with top case in open riser, drag box and is uniformly provided with 3 blind risers；The running gate system
Ingate use flat, the cross-sectional area of ingate is less than the runner gate cross-sectional area of running gate system；Can avoid due to
Ingate end casting shrinkage cavity phenomenon 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, preparing raw material includes：It is the Q10 pig iron, carburant, useless containing chromium
Steel, magnesium-rare earth, ferrosilicon, cathode copper, tin, nodulizer, inovulant；Its chemical element component and its mass percent for containing
For：
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%.
10%, foundry returns, which is accounted for, from high-carbon, low-phosphorous, low-sulfur high-quality Q10 pig iron additions accounts for 10%, carburant addition
Account for 3.5%, magnesium-rare earth addition and account for 1%, cathode copper addition and account for that 0.6%, tin addition accounts for 0.04%, remaining is containing chromium
Steel scrap.
A kind of equalizing suspension system casting spheroidal graphite cast-iron plastics on new materials preparation method, comprises the following steps：
(1) raw material melting：Preparing raw material is added into 1T electrosmelting of intermediate frequency, is conducive to the adjustment and the control to temperature of composition
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 qualified iron liquid of chemical composition is made.When adding raw material, magnesium-rare earth cuts the covering of iron pin with bushel iron.
(2) spheroidising and current-following inoculation processing：Using one ton of ladle of dam-type, nodulizer is added in ladle
Spheroidization and inoculation；Then pour into a mould, inovulant current-following inoculation is added in cast, inovulant consumption is controlled 0.2%；Molten iron goes out furnace temperature
Degree control is at 1560 DEG C；Ensure reaching for plasticity index.
In spheroidising and current-following inoculation processing procedure, ferrosilicon is according to 4:3 weight point spheroidising and current-following inoculation
Process is added twice.
(3) pour into a mould：Carry out setting ceramic mistake in moulding, the running gate system of device for sand coated iron mould case from device for sand coated iron mould formative technology
Filter disc.
Embodiment 3
A kind of equalizing suspension system casting spheroidal graphite cast-iron plastics on new materials, preparing raw material includes：It is the Q10 pig iron, carburant, useless containing chromium
Steel, magnesium-rare earth, ferrosilicon, cathode copper, tin, nodulizer, inovulant；Its chemical element component and its mass percent for containing
For：
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%.
10%, foundry returns, which is accounted for, from high-carbon, low-phosphorous, low-sulfur high-quality Q10 pig iron additions accounts for 10%, carburant addition
Account for 3.5%, magnesium-rare earth addition and account for 1%, cathode copper addition and account for that 0.6%, tin addition accounts for 0.04%, remaining is containing chromium
Steel scrap.
A kind of equalizing suspension system casting spheroidal graphite cast-iron plastics on new materials preparation method, comprises the following steps：
(1) raw material melting：Preparing raw material is added into 1T electrosmelting of intermediate frequency, is conducive to the adjustment and the control to temperature of composition
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 qualified iron liquid of chemical composition is made.When adding raw material, magnesium-rare earth cuts the covering of iron pin with bushel iron.
(2) spheroidising and current-following inoculation processing：Using one ton of ladle of dam-type, nodulizer ball is added in ladle
Change is bred；Then pour into a mould, inovulant current-following inoculation is added in cast, inovulant consumption is controlled 0.2%；Molten iron tapping temperature
Control is at 1570 DEG C；Ensure reaching for plasticity index.
In spheroidising and current-following inoculation processing procedure, ferrosilicon is according to 4:3 weight point spheroidising and current-following inoculation
Process is added twice.
(3) pour into a mould：Carry out setting ceramic mistake in moulding, the running gate system of device for sand coated iron mould case from device for sand coated iron mould formative technology
Filter disc.
It is the known technology of those skilled in the art in addition to the technical characteristic described in specification.
The above-mentioned embodiment to the present invention is described, but not limiting the scope of the invention,
On the basis of technical solution of the present invention, those skilled in the art would not require any inventive effort the various modifications that can be made
Or deform still within the scope of the present invention.
Claims (6)
1. a kind of equalizing suspension system casting spheroidal graphite cast-iron plastics on new materials, it is characterised in that preparing raw material includes：The Q10 pig iron, carburetting
Agent, steel scrap containing chromium, foundry returns, magnesium-rare earth, ferrosilicon, cathode copper, tin, nodulizer, inovulant；Its chemical element contained into
Divide and its mass percent is：
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.
2. a kind of equalizing suspension system casting spheroidal graphite cast-iron plastics on new materials according to claim 1, it is characterized in that, the Q10 lifes
Iron addition, which accounts for 10%, foundry returns and accounts for 10%, carburant addition and account for 3.5%, magnesium-rare earth addition, accounts for 1%, cathode copper
Addition accounts for that 0.6%, tin addition accounts for 0.04%, remaining is steel scrap containing chromium.
3. a kind of equalizing suspension system casting spheroidal graphite cast-iron plastics on new materials according to claim 1, it is characterized in that, the carburant
Uptake is not less than 88%, and 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, it is characterised in that comprise the following steps：
(1) raw material melting：Preparing raw material is added into 1T electrosmelting of intermediate frequency, using high frequency infrared ray carbon sulphur analyser, plug-in type electricity
The read-only spectrometer analysis molten iron composition of sub- temperature-measuring gun, Nike, is made the qualified iron liquid of chemical composition；
(2) spheroidising and current-following inoculation processing：Using one ton of ladle of dam-type, nodulizer nodularization is added in ladle pregnant
Educate；Then pour into a mould, inovulant current-following inoculation is added in cast, inovulant consumption is controlled 0.2%；Molten iron tapping temperature is controlled
At 1560 ± 10 DEG C；
(3) pour into a mould：From device for sand coated iron mould formative technology, the running gate system of device for sand coated iron mould case sets ceramic filter, ceramic filter
The core inlaying chill of piece.
5. a kind of equalizing suspension system casting spheroidal graphite cast-iron plastics on new materials preparation method according to claim 4, it is characterized in that, it is dilute
Soil bushel iron used for magnesium alloy cuts the covering of iron pin.
6. a kind of equalizing suspension system casting spheroidal graphite cast-iron plastics on new materials preparation method according to claim 4, it is characterized in that, silicon
Iron is according to 4:3 weight point spheroidising and current-following inoculation process are added twice.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| 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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| CN107245642A true CN107245642A (en) | 2017-10-13 |
| CN107245642B CN107245642B (en) | 2019-05-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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2017
- 2017-06-29 CN CN201710515186.8A patent/CN107245642B/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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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 |