CN106544579A - A kind of antiacid cast iron circulator and preparation method thereof - Google Patents
A kind of antiacid cast iron circulator and preparation method thereof Download PDFInfo
- Publication number
- CN106544579A CN106544579A CN201611164630.8A CN201611164630A CN106544579A CN 106544579 A CN106544579 A CN 106544579A CN 201611164630 A CN201611164630 A CN 201611164630A CN 106544579 A CN106544579 A CN 106544579A
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- iron
- circulator
- antiacid
- cast iron
- analysis
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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
-
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
Abstract
The invention discloses a kind of antiacid cast iron circulator and preparation method thereof, the percentage by weight of described its composition of antiacid cast iron circulator is by C0.6～0.85%, Si14.5～16%, Mn0.3～0.8%, Cu2.0～2.5%, P≤0.08%, S≤0.05%, balance of Fe.Described preparation method includes dispensing, preheating, melting, both analysis, final deoxidizing, inoculation, cast.The method casting technique is simple, by the addition for controlling carbon in cast iron, silicon and copper, improves the decay resistance of cast iron, casts out antiacid cast iron circulator, be particularly suitable for nitric acid, sulphuric acid, phosphoric acid solution.
Description
Technical field
The present invention relates to the production technical field of ferrous metal, especially a kind of antiacid cast iron circulator and its preparation side
Method.
Background technology
In the commercial production such as oil, chemical industry, chemical fertilizer, many parts and equipment requirements have preferable opposing corrosion failure
Ability, to ensure having higher service life.China is the extremely abundant country of reserves of oil, and petrochemical industry is developed rapidly,
Higher and higher requirement is proposed to the decay resistance of equipment material, while requirement is also more and more big.High silicon corrosiron
Ability with corrosion such as very strong opposing nitric acid, sulphuric acid and phosphoric acid, is a kind of good corrosion-resistant material of the departments such as petrochemical industry
Material.
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 antiacid cast iron circulator and preparation method thereof is proposed, is passed through
The addition of control carbon in cast iron, silicon and copper, casts out antiacid cast iron circulator.
The technical solution adopted for the present invention to solve the technical problems is：The percentage by weight of its composition is：C0.6～
0.85%th, Si14.5～16%, Mn0.3～0.8%, Cu2.0～2.5%, P≤0.08%, S≤0.05%, balance of Fe.
A kind of method for preparing antiacid cast iron circulator, including following several steps：
The first step：Dispensing：By steel scrap, foundry returns, the pig iron, ferrosilicon and copper press C0.6～0.85%, Si14.5～16%, Mn0.3～
0.8%th, Cu2.0～2.5%, P≤0.08%, S≤0.05%, the mode of balance of Fe percentage by weights carry out dispensing；
Second step：Preheating：By optimization calculate steel scrap, foundry returns, the pig iron input intermediate frequency furnace in preheated；
3rd step：Melting：After by the steel scrap in intermediate frequency furnace, foundry returns, pig iron fusing, put into its quantity for furnace charge 12～
22%, composition carries out pre-deoxidation for the deoxidizer of Calx 60%+ fluorites 40%, then puts into ferrosilicon that baking processes and copper obtains iron liquid,
When bonded hard ferrite magnet is warming up to 1480～1620 DEG C, add 0.1% deslagging agent once to remove the gred, be then covered by be sampled point of heat preserving agent etc.
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 1480～1620 DEG C, the aluminum that its quantity is iron liquid 0.1～0.3% is put into
Carry out final deoxidizing；
6th step：Inoculation：Iron liquid carries out inoculation when flowing to casting ladle from intermediate frequency furnace, adds its quantity to be iron liquid amount
0.3～0.5% inovulant, the granularity of inovulant is 2～6mm, and inovulant is 75 ferrosilicon；
7th step：Cast：When bonded hard ferrite magnet is down to 1460～1520 DEG C, poured into a mould, obtained antiacid cast iron circulator foundry goods.
The invention has the beneficial effects as follows：Casting technique is simple, by the addition for controlling carbon in cast iron, silicon and copper, improves
The decay resistance of cast iron, casts out antiacid cast iron circulator, is particularly suitable for nitric acid, sulphuric acid, phosphoric acid solution.
Specific embodiment
Embodiment 1：
A kind of method for preparing antiacid cast iron circulator of this example, including following several steps：
The first step：Dispensing：By steel scrap, foundry returns, the pig iron, ferrosilicon and copper press C0.6%, Si14.5%, Mn0.3%, Cu2.0%, P≤
0.08%th, S≤0.05%, the mode of balance of Fe percentage by weights carry out dispensing；
Second step：Preheating：By optimization calculate steel scrap, foundry returns, the pig iron input intermediate frequency furnace in preheated；
3rd step：Melting：After by the steel scrap in intermediate frequency furnace, foundry returns, pig iron fusing, it is furnace charge 12% to put into its quantity, into
The deoxidizer for being divided into Calx 60%+ fluorites 40% carries out pre-deoxidation, then puts into ferrosilicon that baking processes and copper obtains iron liquid, works as iron liquid
Temperature is warming up to 1480 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 DEG C, putting into the aluminum that its quantity is iron liquid 0.1% carries out final deoxidizing；
6th step：Inoculation：Iron liquid carries out inoculation when flowing to casting ladle from intermediate frequency furnace, adds its quantity to be iron liquid amount
0.3% inovulant, the granularity of inovulant is 2～6mm, and inovulant is 75 ferrosilicon；
7th step：Cast：When bonded hard ferrite magnet is down to 1460 DEG C, poured into a mould, obtained antiacid cast iron circulator foundry goods.
Embodiment 2：
A kind of method for preparing antiacid cast iron circulator of this example, including following several steps：
The first step：Dispensing：By steel scrap, foundry returns, the pig iron, ferrosilicon and copper press C0.725%, Si15.25%, Mn0.55%,
Cu2.25%, P≤0.08%, S≤0.05%, the mode of balance of Fe percentage by weights carry out dispensing；
Second step：Preheating：By optimization calculate steel scrap, foundry returns, the pig iron input intermediate frequency furnace in preheated；
3rd step：Melting：After by the steel scrap in intermediate frequency furnace, foundry returns, pig iron fusing, it is furnace charge 17% to put into its quantity, into
The deoxidizer for being divided into Calx 60%+ fluorites 40% carries out pre-deoxidation, then puts into ferrosilicon that baking processes and copper obtains iron liquid, works as iron liquid
Temperature is warming up to 1500 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 1500 DEG C, putting into the aluminum that its quantity is iron liquid 0.2% carries out final deoxidizing；
6th step：Inoculation：Iron liquid carries out inoculation when flowing to casting ladle from intermediate frequency furnace, adds its quantity to be iron liquid amount
0.4% inovulant, the granularity of inovulant is 4mm, and inovulant is 75 ferrosilicon；
7th step：Cast：When bonded hard ferrite magnet is down to 1490 DEG C, poured into a mould, obtained antiacid cast iron circulator foundry goods.
Embodiment 3：
A kind of method for preparing antiacid cast iron circulator of this example, including following several steps：
The first step：Dispensing：By steel scrap, foundry returns, the pig iron, ferrosilicon and copper press C0.85%, Si116%, Mn0.8%, Cu2.5%, P≤
0.08%th, S≤0.05%, the mode of balance of Fe percentage by weights carry out dispensing；
Second step：Preheating：By optimization calculate steel scrap, foundry returns, the pig iron input intermediate frequency furnace in preheated；
3rd step：Melting：After by the steel scrap in intermediate frequency furnace, foundry returns, pig iron fusing, it is furnace charge 22% to put into its quantity, into
The deoxidizer for being divided into Calx 60%+ fluorites 40% carries out pre-deoxidation, then puts into ferrosilicon that baking processes and copper obtains iron liquid, works as iron liquid
Temperature is warming up to 1620 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 1620 DEG C, putting into the aluminum that its quantity is iron liquid 0.3% carries out final deoxidizing；
6th step：Inoculation：Iron liquid carries out inoculation when flowing to casting ladle from intermediate frequency furnace, adds its quantity to be iron liquid amount
0.5% inovulant, the granularity of inovulant is 6mm, and inovulant is 75 ferrosilicon；
7th step：Cast：When bonded hard ferrite magnet is down to 1520 DEG C, poured into a mould, obtained antiacid cast iron circulator foundry goods.
Above the specific embodiment of the present invention is described, but these explanations can not be considered as limiting the present invention
Scope, protection scope of the present invention limited 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 antiacid cast iron circulator, it is characterised in that：The percentage by weight of its composition is：C0.6～0.85%, Si14.5
～16%, Mn0.3～0.8%, Cu2.0～2.5%, P≤0.08%, S≤0.05%, balance of Fe.
2. a kind of method of the antiacid cast iron circulator prepared described in claim 1, it is characterised in that:Including following several steps
Suddenly：
The first step：Dispensing：By steel scrap, foundry returns, the pig iron, ferrosilicon and copper press C0.6～0.85%, Si14.5～16%, Mn0.3～
0.8%th, Cu2.0～2.5%, P≤0.08%, S≤0.05%, the mode of balance of Fe percentage by weights carry out dispensing；
Second step：Preheating：By optimization calculate steel scrap, foundry returns, the pig iron input intermediate frequency furnace in preheated；
3rd step：Melting：After by the steel scrap in intermediate frequency furnace, foundry returns, pig iron fusing, put into its quantity for furnace charge 12～
22%, composition carries out pre-deoxidation for the deoxidizer of Calx 60%+ fluorites 40%, then puts into ferrosilicon that baking processes and copper obtains iron liquid,
When bonded hard ferrite magnet is warming up to 1480～1620 DEG C, add 0.1% deslagging agent once to remove the gred, be then covered by be sampled point of heat preserving agent etc.
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 1480～1620 DEG C, the aluminum that its quantity is iron liquid 0.1～0.3% is put into
Carry out final deoxidizing；
6th step：Inoculation：Iron liquid carries out inoculation when flowing to casting ladle from intermediate frequency furnace, adds its quantity to be iron liquid amount
0.3～0.5% inovulant, the granularity of inovulant is 2～6mm, and inovulant is 75 ferrosilicon；
7th step：Cast：When bonded hard ferrite magnet is down to 1460～1520 DEG C, poured into a mould, obtained antiacid cast iron circulator foundry goods.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611164630.8A CN106544579A (en) | 2016-12-16 | 2016-12-16 | A kind of antiacid cast iron circulator and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611164630.8A CN106544579A (en) | 2016-12-16 | 2016-12-16 | A kind of antiacid cast iron circulator and preparation method thereof |
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| CN106544579A true CN106544579A (en) | 2017-03-29 |
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| CN201611164630.8A Pending CN106544579A (en) | 2016-12-16 | 2016-12-16 | A kind of antiacid cast iron circulator and preparation method thereof |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007239051A (en) * | 2006-03-09 | 2007-09-20 | Kobe Steel Ltd | Ultrahigh strength steel with excellent workability and delayed fracture resistance, and its manufacturing method |
| JP2011162822A (en) * | 2010-02-08 | 2011-08-25 | Nippon Steel Corp | Pearlite rail having superior wear resistance and method for manufacturing the same |
| 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 CN201611164630.8A patent/CN106544579A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007239051A (en) * | 2006-03-09 | 2007-09-20 | Kobe Steel Ltd | Ultrahigh strength steel with excellent workability and delayed fracture resistance, and its manufacturing method |
| JP2011162822A (en) * | 2010-02-08 | 2011-08-25 | Nippon Steel Corp | Pearlite rail having superior wear resistance and method for manufacturing the same |
| 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 |
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