CN106636868A - Cast iron machine tool body and preparation method thereof - Google Patents
Cast iron machine tool body and preparation method thereof Download PDFInfo
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- CN106636868A CN106636868A CN201611165002.1A CN201611165002A CN106636868A CN 106636868 A CN106636868 A CN 106636868A CN 201611165002 A CN201611165002 A CN 201611165002A CN 106636868 A CN106636868 A CN 106636868A
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- iron
- cast
- inovulant
- analysis
- iron liquid
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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
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C1/00—Refining of pig-iron; Cast iron
- C21C1/10—Making spheroidal graphite cast-iron
- C21C1/105—Nodularising additive agents
-
- 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
-
- 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
-
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
The invention discloses a cast iron machine tool body and a preparation method thereof. The cast iron machine tool body comprises the following ingredients by weight percent: 2.9-3.3% of C, 1.4-1.9% of Si, 0.5-1.0% of Mn, 0.4-0.7% of P, less than or equal to 0.12% of S and the balance of Fe. The preparation method comprises the steps of compounding, preheating, smelting, on-the-spot quick analysis, final deoxidation, spheroidizing treatment, inoculation and pouring. The preparation method is simple in smelting process, the wear reduction performance of castings is improved through controlling the addition of carbon, silicone and phosphorus in cast iron and performing spheroidizing treatment, meanwhile, the production cost is lowered, and the preparation method is particularly suitable for the cast iron machine tool body.
Description
Technical field
The present invention relates to the production technical field of ferrous metal, especially a kind of cast iron bed piece and preparation method thereof.
Background technology
China begins to produce spheroidal graphite cast-iron from nineteen fifty, and abundant rare earth resources have been developed since adding for the seven's+,
Therefore develop the unique Rare-earth Elements Treated Nodular Iron of China on the basis of magnesium spheroidal graphite cast-iron, become important founding materials.It is phosphorous
Spheroidal graphite cast-iron has good Wear vesistance, it have very high hardness and extend foundry goods service life the characteristics of.Phosphorous ball
Black cast iron only need to add the phosphorus higher than more than 0.3% in casting pig, in cast iron in addition to graphite and general matrix, also be formed
Iron phosphide eutectic hardens phase, and the microhardness of iron phosphide eutectic is up to 1800HV or so, and iron phosphide eutectic has good antifriction function.China has perhaps
Many natural high phosphorus irons, phosphorus ore is also very abundant, therefore, develop phosphorous anti-attrition spheroidal graphite cast-iron to extend the service life of foundry goods.
The content of the invention
It is an object of the present invention to be directed to the problems referred to above, a kind of cast iron bed piece and preparation method thereof is proposed, by control
The addition of carbon in cast iron processed, silicon and phosphorus and spheroidising, cast out high-performance anti-attrition spheroidal graphite cast-iron.
The technical solution adopted for the present invention to solve the technical problems is：The percentage by weight of its composition is：C2.9～
3.3%th, Si1.4～1.9%, Mn0.5～1.0%, P0.4～0.7%, S≤0.12%, balance of Fe.
A kind of method for preparing cast iron bed piece, including following several steps：
The first step：Dispensing：By steel scrap, foundry returns, the pig iron, ferromanganese, ferrosilicon press C2.9～3.3%, Si1.4～1.9%, Mn0.5～
1.0%th, P0.4～0.7%, S≤0.12%, the mode of balance of Fe percentage by weights carries out dispensing；Second step：Preheating：Will optimization
Preheated in the steel scrap that calculates, foundry returns, pig iron input intermediate frequency furnace；
3rd step：Melting：By the steel scrap in intermediate frequency furnace, foundry returns, the pig iron fusing after, put into its quantity for furnace charge 18～
28%, composition carries out pre-deoxidation for the deoxidier of lime 70%+ fluorites 30%, then puts into ferromanganese and the ferrosilicon that baking is processed, and works as iron liquid
Temperature is warming up to 1380～1420 DEG C, adds 0.1% deslagging agent once to remove the gred, and is then covered by heat preserving agent and waits sample analysis；
4th step：Both analysis：Take iron liquid stokehold spectrometer analysis quickly to be analyzed with reference to carbon silicon heat analysis, according to
Analysis result adjusts chemical composition；
5th step：Final deoxidizing：Bonded hard ferrite magnet is warming up to into 1480～1600 DEG C, the aluminium that its quantity is iron liquid 0.1～0.3% is put into
Carry out final deoxidizing；
6th step：Spheroidising and inoculation：Iron liquid flows to casting ladle from intermediate frequency furnace, carry out in casting ladle spheroidising,
Inoculation and secondary except Slag treatment, adds 1.2～1.4% nodulizers that its quantity is iron liquid amount, and the granularity of nodulizer is 8～
26mm, nodulizer is FeSiMg8Re3；Adding 1～1.2% inovulant that its quantity is iron liquid amount, the granularity of inovulant is 4～
8mm, inovulant is 75 ferrosilicon；Add 0.1% deslagging agent that its quantity is iron liquid amount, cast triangle of skimming at once after spheroidizing reacion
Test piece and spectrometer analysis detect that liquid iron balling and chemical composition are poured into a mould after qualified；
7th step：Cast：1460～1500 DEG C of pouring temperature, as cast adds its quantity for iron liquid amount when casting ladle is poured into a mould
0.08～0.16% post inoculant, the granularity of inovulant is 2～6mm, and inovulant is 75 ferrosilicon, obtains phosphorous spheroidal graphite cast-iron machine
Bed bed casting.
The invention has the beneficial effects as follows：Smelting technology is simple, by controlling carbon in cast iron, silicon and the addition and ball of phosphorus
Change is processed, and improves the Wear vesistance of foundry goods, while reducing production cost, is particularly suitable for casting bed piece.
Specific embodiment
Embodiment 1：
A kind of method for preparing cast iron bed piece of this example, including following several steps：
The first step：Dispensing：By steel scrap, foundry returns, the pig iron, ferromanganese, ferrosilicon press C2.9%, Si1.4%, Mn0.5%, P0.4%, S≤
0.12%, the mode of balance of Fe percentage by weights carries out dispensing；Second step：Preheating：By optimization calculate steel scrap, foundry returns,
Preheated in pig iron input intermediate frequency furnace；
3rd step：Melting：After by the steel scrap in intermediate frequency furnace, foundry returns, pig iron fusing, it is furnace charge 18% to put into its quantity, into
Being divided into the deoxidier of lime 70%+ fluorites 30% carries out pre-deoxidation, then puts into ferromanganese and the ferrosilicon that baking is processed, when bonded hard ferrite magnet liter
Temperature adds 0.1% deslagging agent once to remove the gred to 1380 DEG C, is then covered by heat preserving agent and waits sample analysis；
4th step：Both analysis：Take iron liquid stokehold spectrometer analysis quickly to be analyzed with reference to carbon silicon heat analysis, according to
Analysis result adjusts chemical composition；
5th step：Final deoxidizing：Bonded hard ferrite magnet is warming up to into 1480 DEG C, putting into the aluminium that its quantity is iron liquid 0.1% carries out final deoxidizing；
6th step：Spheroidising and inoculation：Iron liquid flows to casting ladle from intermediate frequency furnace, carry out in casting ladle spheroidising,
Inoculation and secondary except Slag treatment, adds 1.2% nodulizer that its quantity is iron liquid amount, and the granularity of nodulizer is 8mm, nodularization
Agent is FeSiMg8Re3；1% inovulant that its quantity is iron liquid amount is added, the granularity of inovulant is 4mm, and inovulant is 75 ferrosilicon；
0.1% deslagging agent that its quantity is iron liquid amount is added, skim at once after spheroidizing reacion cast test wedge and spectrometer analysis detection
Poured into a mould after liquid iron balling and chemical composition are qualified；
7th step：Cast：1460 DEG C of pouring temperature, as cast adds its quantity for the 0.08% 2 of iron liquid amount when casting ladle is poured into a mould
Secondary inovulant, the granularity of inovulant is 2mm, and inovulant is 75 ferrosilicon, obtains phosphorous spheroidal graphite cast-iron bed piece foundry goods.
Embodiment 2：
A kind of method for preparing cast iron bed piece of this example, including following several steps：
The first step：Dispensing：Steel scrap, foundry returns, the pig iron, ferromanganese, ferrosilicon are pressed into C3.1%, Si1.65%, Mn0.75%, P0.55%, S
≤ 0.12%, the mode of balance of Fe percentage by weights carries out dispensing；Second step：Preheating：By optimization calculate steel scrap, melt down
Preheated in material, pig iron input intermediate frequency furnace；
3rd step：Melting：After by the steel scrap in intermediate frequency furnace, foundry returns, pig iron fusing, it is furnace charge 23% to put into its quantity, into
Being divided into the deoxidier of lime 70%+ fluorites 30% carries out pre-deoxidation, then puts into ferromanganese and the ferrosilicon that baking is processed, when bonded hard ferrite magnet liter
Temperature adds 0.1% deslagging agent once to remove the gred to 1400 DEG C, is then covered by heat preserving agent and waits sample analysis；
4th step：Both analysis：Take iron liquid stokehold spectrometer analysis quickly to be analyzed with reference to carbon silicon heat analysis, according to
Analysis result adjusts chemical composition；
5th step：Final deoxidizing：Bonded hard ferrite magnet is warming up to into 1540 DEG C, putting into the aluminium that its quantity is iron liquid 0.2% carries out final deoxidizing；
6th step：Spheroidising and inoculation：Iron liquid flows to casting ladle from intermediate frequency furnace, carry out in casting ladle spheroidising,
Inoculation and secondary except Slag treatment, adds 1.3% nodulizer that its quantity is iron liquid amount, and the granularity of nodulizer is 17mm, nodularization
Agent is FeSiMg8Re3；1.1% inovulant that its quantity is iron liquid amount is added, the granularity of inovulant is 6mm, and inovulant is 75 silicon
Iron；0.1% deslagging agent that its quantity is iron liquid amount is added, skim at once after spheroidizing reacion cast test wedge and spectrometer analysis
Poured into a mould after detection liquid iron balling and chemical composition are qualified；
7th step：Cast：1480 DEG C of pouring temperature, as cast adds its quantity for the 0.12% 2 of iron liquid amount when casting ladle is poured into a mould
Secondary inovulant, the granularity of inovulant is 4mm, and inovulant is 75 ferrosilicon, obtains phosphorous spheroidal graphite cast-iron bed piece foundry goods.
Embodiment 3：
A kind of method for preparing cast iron bed piece of this example, including following several steps：
The first step：Dispensing：By steel scrap, foundry returns, the pig iron, ferromanganese, ferrosilicon press C3.3%, Si1.9%, Mn1.0%, P0.7%, S≤
0.12%, the mode of balance of Fe percentage by weights carries out dispensing；Second step：Preheating：By optimization calculate steel scrap, foundry returns,
Preheated in pig iron input intermediate frequency furnace；
3rd step：Melting：After by the steel scrap in intermediate frequency furnace, foundry returns, pig iron fusing, it is furnace charge 28% to put into its quantity, into
Being divided into the deoxidier of lime 70%+ fluorites 30% carries out pre-deoxidation, then puts into ferromanganese and the ferrosilicon that baking is processed, when bonded hard ferrite magnet liter
Temperature adds 0.1% deslagging agent once to remove the gred to 1420 DEG C, is then covered by heat preserving agent and waits sample analysis；
4th step：Both analysis：Take iron liquid stokehold spectrometer analysis quickly to be analyzed with reference to carbon silicon heat analysis, according to
Analysis result adjusts chemical composition；
5th step：Final deoxidizing：Bonded hard ferrite magnet is warming up to into 1600 DEG C, putting into the aluminium that its quantity is iron liquid 0.3% carries out final deoxidizing；
6th step：Spheroidising and inoculation：Iron liquid flows to casting ladle from intermediate frequency furnace, carry out in casting ladle spheroidising,
Inoculation and secondary except Slag treatment, adds 1.4% nodulizer that its quantity is iron liquid amount, and the granularity of nodulizer is 26mm, nodularization
Agent is FeSiMg8Re3；1.2% inovulant that its quantity is iron liquid amount is added, the granularity of inovulant is 8mm, and inovulant is 75 silicon
Iron；0.1% deslagging agent that its quantity is iron liquid amount is added, skim at once after spheroidizing reacion cast test wedge and spectrometer analysis
Poured into a mould after detection liquid iron balling and chemical composition are qualified；
7th step：Cast：1500 DEG C of pouring temperature, as cast adds its quantity for the 0.16% 2 of iron liquid amount when casting ladle is poured into a mould
Secondary inovulant, the granularity of inovulant is 6mm, and inovulant is 75 ferrosilicon, obtains phosphorous spheroidal graphite cast-iron bed piece foundry goods.
The specific embodiment of the present invention is described above, but these explanations can not be considered as limiting the present invention
Scope, protection scope of the present invention limits by appended claims, Wang where appointing on the basis of the claims in the present invention
What modification, equivalent and improvement etc., each falls within the Inner of protection scope of the present invention.
Claims (2)
1. a kind of cast iron bed piece, it is characterised in that：The percentage by weight of its composition is：C2.9～3.3%, Si1.4～
1.9%th, Mn0.5～1.0%, P0.4～0.7%, S≤0.12%, balance of Fe.
2. a kind of method of the cast iron bed piece prepared described in claim 1, it is characterised in that:Including following several steps：
The first step：Dispensing：By steel scrap, foundry returns, the pig iron, ferromanganese, ferrosilicon press C2.9～3.3%, Si1.4～1.9%, Mn0.5～
1.0%th, P0.4～0.7%, S≤0.12%, the mode of balance of Fe percentage by weights carries out dispensing；Second step：Preheating：Will optimization
Preheated in the steel scrap that calculates, foundry returns, pig iron input intermediate frequency furnace；
3rd step：Melting：By the steel scrap in intermediate frequency furnace, foundry returns, the pig iron fusing after, put into its quantity for furnace charge 18～
28%, composition carries out pre-deoxidation for the deoxidier of lime 70%+ fluorites 30%, then puts into ferromanganese and the ferrosilicon that baking is processed, and works as iron liquid
Temperature is warming up to 1380～1420 DEG C, adds 0.1% deslagging agent once to remove the gred, and is then covered by heat preserving agent and waits sample analysis；
4th step：Both analysis：Take iron liquid stokehold spectrometer analysis quickly to be analyzed with reference to carbon silicon heat analysis, according to
Analysis result adjusts chemical composition；
5th step：Final deoxidizing：Bonded hard ferrite magnet is warming up to into 1480～1600 DEG C, the aluminium that its quantity is iron liquid 0.1～0.3% is put into
Carry out final deoxidizing；
6th step：Spheroidising and inoculation：Iron liquid flows to casting ladle from intermediate frequency furnace, carry out in casting ladle spheroidising,
Inoculation and secondary except Slag treatment, adds 1.2～1.4% nodulizers that its quantity is iron liquid amount, and the granularity of nodulizer is 8～
26mm, nodulizer is FeSiMg8Re3；Adding 1～1.2% inovulant that its quantity is iron liquid amount, the granularity of inovulant is 4～
8mm, inovulant is 75 ferrosilicon；Add 0.1% deslagging agent that its quantity is iron liquid amount, cast triangle of skimming at once after spheroidizing reacion
Test piece and spectrometer analysis detect that liquid iron balling and chemical composition are poured into a mould after qualified；
7th step：Cast：1460～1500 DEG C of pouring temperature, as cast adds its quantity for iron liquid amount when casting ladle is poured into a mould
0.08～0.16% post inoculant, the granularity of inovulant is 2～6mm, and inovulant is 75 ferrosilicon, obtains phosphorous spheroidal graphite cast-iron machine
Bed bed casting.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611165002.1A CN106636868A (en) | 2016-12-16 | 2016-12-16 | Cast iron machine tool body and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611165002.1A CN106636868A (en) | 2016-12-16 | 2016-12-16 | Cast iron machine tool body and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107760981A (en) * | 2017-10-23 | 2018-03-06 | 广东现代铸造有限公司 | A kind of spheroidal graphite cast-iron for bed piece and preparation method thereof |
| CN111876658A (en) * | 2020-09-04 | 2020-11-03 | 浙江坤博精工科技股份有限公司 | Casting method of mechanical arm of industrial robot |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002194477A (en) * | 2000-12-26 | 2002-07-10 | Wakamatsu Seisakusho:Kk | Member for molten nonferrous metal |
| CN103205777A (en) * | 2013-04-19 | 2013-07-17 | 扬州润友复合材料有限公司 | Preparation method of rare earth phosphorus pig iron for assembling electrolytic aluminum anode |
| CN105401066A (en) * | 2015-11-26 | 2016-03-16 | 成都九十度工业产品设计有限公司 | Low-tin-silicon-molybdenum vermicular graphite cast iron and preparation method thereof |
-
2016
- 2016-12-16 CN CN201611165002.1A patent/CN106636868A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002194477A (en) * | 2000-12-26 | 2002-07-10 | Wakamatsu Seisakusho:Kk | Member for molten nonferrous metal |
| CN103205777A (en) * | 2013-04-19 | 2013-07-17 | 扬州润友复合材料有限公司 | Preparation method of rare earth phosphorus pig iron for assembling electrolytic aluminum anode |
| CN105401066A (en) * | 2015-11-26 | 2016-03-16 | 成都九十度工业产品设计有限公司 | Low-tin-silicon-molybdenum vermicular graphite cast iron and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107760981A (en) * | 2017-10-23 | 2018-03-06 | 广东现代铸造有限公司 | A kind of spheroidal graphite cast-iron for bed piece and preparation method thereof |
| CN111876658A (en) * | 2020-09-04 | 2020-11-03 | 浙江坤博精工科技股份有限公司 | Casting method of mechanical arm of industrial robot |
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