CN106755905A - A kind of heat treatment method of cast iron ploughshare - Google Patents
A kind of heat treatment method of cast iron ploughshare Download PDFInfo
- Publication number
- CN106755905A CN106755905A CN201611137016.2A CN201611137016A CN106755905A CN 106755905 A CN106755905 A CN 106755905A CN 201611137016 A CN201611137016 A CN 201611137016A CN 106755905 A CN106755905 A CN 106755905A
- Authority
- CN
- China
- Prior art keywords
- iron
- ploughshare
- cast iron
- casting
- cast
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/18—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for knives, scythes, scissors, or like hand cutting tools
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
The invention discloses a kind of heat treatment method of cast iron ploughshare, the percentage by weight of described its composition of cast iron ploughshare is C3.5~3.8%, Si ＜ 0.6%, Mn0.15~0.2%, P ＜ 0.3%, S0.2~0.4%, balance of Fe.Described method includes dispensing, preheating, melting, both analysis, final deoxidizing, inoculation, cast, austenitizing treatment.The method casting technique is simple, by strictly controlling carbon, the addition of silicon and carrying out austenitizing treatment, improves cast iron wear resistence, and can substitute part expensive alloy element, is particularly suitable for casting tractor, hand steered dilatory ploughshare etc..
Description
Technical field
The present invention relates to the production technical field of ferrous metal, especially a kind of heat treatment method of cast iron ploughshare.
Background technology
The low silicon antifriction cast iron of high-carbon is a kind of anti-friction material of function admirable, and it has hardness higher, except grinding adds
Outside work, typically it is not subjected to other machinings and directly uses.Carbon plays most important work for the abrasion resistance of antifriction cast iron
With carbon containing higher, then the more, thus hardness is higher for the cementite for being formed, and wearability is also better.Using the wear-resistant casting of high-carbon eutectic
It is iron to make ploughshare, have the advantages that hardness is high, wear-resistant, corrosion-resistant small with the coefficient of friction of soil, its effect is ploughed better than 65 manganese steel
Ploughshare, service life improves 10~15%, and cost is only the 20% of 65 manganese steel ploughshares.In addition to cast iron ploughshare case hardness is improved,
Austenitizing treatment need to be carried out.
The content of the invention
The technical problem solved needed for of the invention is to provide a kind of heat treatment method of cast iron ploughshare.In by controlling cast iron
Carbon, the addition of silicon and austenitizing treatment is carried out, improve cast iron wear resistence.
The technical solution adopted for the present invention to solve the technical problems is：Including following several steps：
The first step：Dispensing：Steel scrap, foundry returns, the pig iron, ferrosilicon are pressed into C3.5~3.8%, Si ＜ 0.6%, Mn0.15~0.2%, P ＜
0.3%th, S0.2~0.4%, the mode of balance of Fe percentage by weights carries out dispensing；
Second step：Preheating：Will optimize calculate steel scrap, foundry returns, the pig iron input intermediate frequency furnace in preheated；
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 16~
24%, composition carries out pre-deoxidation for the deoxidier of lime 65%+ fluorites 35%, then puts into the ferrosilicon of baking treatment and obtain iron liquid；
4th step：Both analysis：Take iron liquid casting sample quickly to be analyzed, chemical composition is adjusted according to analysis result；
5th step：Final deoxidizing：Bonded hard ferrite magnet is warming up to 1490~1640 DEG C, the aluminium 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, and it is iron liquid amount to add its quantity
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 1470~1540 DEG C, poured into a mould, obtained cast iron ploughshare casting；
8th step：Austenitizing treatment.
In described 8th step austenitizing treatment, below 200 DEG C of casting ﹤ is fitted into heat-treatment furnace, with 100~200 DEG C/
The speed of h is warming up to 850~1100 DEG C, and 2~4h of insulation is quickly cooled to less than 300 DEG C air coolings of coming out of the stove, and obtains cast iron ploughshare part.
The beneficial effects of the invention are as follows：Casting technique is simple, by strictly controlling carbon, the addition of silicon and carrying out austenite
Change is processed, and improves cast iron wear resistence, and can substitute part expensive alloy element, is particularly suitable for casting tractor, hand steered dilatory plough
Ploughshare etc..
Specific embodiment
Embodiment 1：
A kind of heat treatment method of cast iron ploughshare of this example, including following several steps：
The first step：Dispensing：By steel scrap, foundry returns, the pig iron, ferrosilicon press C3.5%, Si ＜ 0.6%, Mn0.15%, P ＜ 0.3%,
S0.2%, the mode of balance of Fe percentage by weights carries out dispensing；
Second step：Preheating：Will optimize 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, its quantity is put into for furnace charge 16%, into
Being divided into the deoxidier of lime 65%+ fluorites 35% carries out pre-deoxidation, then puts into the ferrosilicon of baking treatment and obtain iron liquid；
4th step：Both analysis：Take iron liquid casting sample quickly to be analyzed, chemical composition is adjusted according to analysis result；
5th step：Final deoxidizing：Bonded hard ferrite magnet is warming up to 1490 DEG C, putting into the aluminium 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, and it is iron liquid amount to add its quantity
0.3% inovulant, the granularity of inovulant is 2mm, and inovulant is 75 ferrosilicon；
7th step：Cast：When bonded hard ferrite magnet is down to 1470 DEG C, poured into a mould, obtained cast iron ploughshare casting；
8th step：Austenitizing treatment：Below 200 DEG C of casting ﹤ is fitted into heat-treatment furnace, and 850 are warming up to the speed of 100 DEG C/h
DEG C, insulation 2h is quickly cooled to less than 300 DEG C air coolings of coming out of the stove, and obtains cast iron ploughshare part.
Embodiment 2：
A kind of heat treatment method of cast iron ploughshare of this example, including following several steps：
The first step：Dispensing：By steel scrap, foundry returns, the pig iron, ferrosilicon press C3.65%, Si ＜ 0.6%, Mn0.175%, P ＜ 0.3%,
S0.3%, the mode of balance of Fe percentage by weights carries out dispensing；
Second step：Preheating：Will optimize 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, its quantity is put into for furnace charge 20%, into
Being divided into the deoxidier of lime 65%+ fluorites 35% carries out pre-deoxidation, then puts into the ferrosilicon of baking treatment and obtain iron liquid；
4th step：Both analysis：Take iron liquid casting sample quickly to be analyzed, chemical composition is adjusted according to analysis result；
5th step：Final deoxidizing：Bonded hard ferrite magnet is warming up to 1565 DEG C, putting into the aluminium 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, and it is iron liquid amount to add its quantity
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 1505 DEG C, poured into a mould, obtained cast iron ploughshare casting；
8th step：Austenitizing treatment：Below 200 DEG C of casting ﹤ is fitted into heat-treatment furnace, and 970 are warming up to the speed of 150 DEG C/h
DEG C, insulation 3h is quickly cooled to less than 300 DEG C air coolings of coming out of the stove, and obtains cast iron ploughshare cast iron part.
Embodiment 3：
A kind of heat treatment method of cast iron ploughshare of this example, including following several steps：
The first step：Dispensing：Steel scrap, foundry returns, the pig iron, ferrosilicon are pressed into C3.8%, Si ＜ 0.6%, Mn0.2%, P ＜ 0.3%, S0.4%,
The mode of balance of Fe percentage by weights carries out dispensing；
Second step：Preheating：Will optimize 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, its quantity is put into for furnace charge 24%, into
Being divided into the deoxidier of lime 65%+ fluorites 35% carries out pre-deoxidation, then puts into the ferrosilicon of baking treatment and obtain iron liquid；
4th step：Both analysis：Take iron liquid casting sample quickly to be analyzed, chemical composition is adjusted according to analysis result；
5th step：Final deoxidizing：Bonded hard ferrite magnet is warming up to 1640 DEG C, putting into the aluminium 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, and it is iron liquid amount to add its quantity
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 1540 DEG C, poured into a mould, obtained cast iron ploughshare casting；
8th step：Austenitizing treatment：Below 200 DEG C of casting ﹤ is fitted into heat-treatment furnace, is warming up to the speed of 200 DEG C/h
1100 DEG C, insulation 4h is quickly cooled to less than 300 DEG C air coolings of coming out of the stove, and obtains cast iron ploughshare part.
Specific embodiment of the 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 heat treatment method of cast iron ploughshare, it is characterised in that：Including following several steps：
The first step：Dispensing：Steel scrap, foundry returns, the pig iron, ferrosilicon are pressed into C3.5~3.8%, Si ＜ 0.6%, Mn0.15~0.2%, P ＜
0.3%th, S0.2~0.4%, the mode of balance of Fe percentage by weights carries out dispensing；
Second step：Preheating：Will optimize calculate steel scrap, foundry returns, the pig iron input intermediate frequency furnace in preheated；
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 16~
24%, composition carries out pre-deoxidation for the deoxidier of lime 65%+ fluorites 35%, then puts into the ferrosilicon of baking treatment and obtain iron liquid；
4th step：Both analysis：Take iron liquid casting sample quickly to be analyzed, chemical composition is adjusted according to analysis result；
5th step：Final deoxidizing：Bonded hard ferrite magnet is warming up to 1490~1640 DEG C, the aluminium 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, and it is iron liquid amount to add its quantity
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 1470~1540 DEG C, poured into a mould, obtained cast iron ploughshare casting；
8th step：Austenitizing treatment.
2. the heat treatment method of a kind of cast iron ploughshare according to claim 1, it is characterised in that：It is difficult to understand in the 8th described step
In the treatment of family name's bodyization, below 200 DEG C of casting ﹤ is fitted into heat-treatment furnace, and 850~1100 are warming up to the speed of 100~200 DEG C/h
DEG C, 2~4h of insulation is quickly cooled to less than 300 DEG C air coolings of coming out of the stove, and obtains cast iron ploughshare part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611137016.2A CN106755905A (en) | 2016-12-12 | 2016-12-12 | A kind of heat treatment method of cast iron ploughshare |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611137016.2A CN106755905A (en) | 2016-12-12 | 2016-12-12 | A kind of heat treatment method of cast iron ploughshare |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106755905A true CN106755905A (en) | 2017-05-31 |
Family
ID=58875446
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611137016.2A Pending CN106755905A (en) | 2016-12-12 | 2016-12-12 | A kind of heat treatment method of cast iron ploughshare |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106755905A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2019569C1 (en) * | 1992-12-28 | 1994-09-15 | Кульбовский Иван Кузьмич | Process for manufacturing castings of white iron |
| JP2002256340A (en) * | 2001-02-27 | 2002-09-11 | Nakai Kogyo Kk | Malleable white cast iron-made casting excellent in ductility and its producing method |
| CN101445889A (en) * | 2008-12-26 | 2009-06-03 | 马鞍山市益丰实业集团有限公司 | High abrasion proof re-synthesizing cast iron grinding ball and production method thereof |
| CN103173677A (en) * | 2013-03-04 | 2013-06-26 | 西华大学 | Hypoeutectic energy-saving vanadium and titanium containing cast pig iron with low silicon-carbon ratio |
| CN104561409A (en) * | 2014-12-31 | 2015-04-29 | 河北龙凤山铸业有限公司 | Production method for hypoeutectic cast pig iron |
-
2016
- 2016-12-12 CN CN201611137016.2A patent/CN106755905A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2019569C1 (en) * | 1992-12-28 | 1994-09-15 | Кульбовский Иван Кузьмич | Process for manufacturing castings of white iron |
| JP2002256340A (en) * | 2001-02-27 | 2002-09-11 | Nakai Kogyo Kk | Malleable white cast iron-made casting excellent in ductility and its producing method |
| CN101445889A (en) * | 2008-12-26 | 2009-06-03 | 马鞍山市益丰实业集团有限公司 | High abrasion proof re-synthesizing cast iron grinding ball and production method thereof |
| CN103173677A (en) * | 2013-03-04 | 2013-06-26 | 西华大学 | Hypoeutectic energy-saving vanadium and titanium containing cast pig iron with low silicon-carbon ratio |
| CN104561409A (en) * | 2014-12-31 | 2015-04-29 | 河北龙凤山铸业有限公司 | Production method for hypoeutectic cast pig iron |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104004960B (en) | A kind of low chromium vanadium titanium cast iron abrading-ball and preparation method thereof | |
| CN106801187A (en) | A kind of Cast iron liner and preparation method thereof | |
| CN106544580A (en) | A kind of heat treatment method of cast iron tappet | |
| CN104294184B (en) | Mn-Si-B Austria shellfish abrasion resistant cast steel and preparation method thereof | |
| CN103805866A (en) | Wearable steel ball preparation process | |
| CN106636867A (en) | Thermal treatment method of spheroidal graphite cast iron worm wheel | |
| CN106755846A (en) | A kind of heat treatment method of cast iron bed piece | |
| CN106399814A (en) | Heat treatment method for phosphor-copper-titanium abrasion-resistant cast iron | |
| CN106435126A (en) | Heat treatment method of vanadium-titanium wear-resistant cast iron | |
| CN106755905A (en) | A kind of heat treatment method of cast iron ploughshare | |
| CN106521304A (en) | Heat treatment method for chromium molybdenum copper wear resisting cast iron | |
| CN106636868A (en) | Cast iron machine tool body and preparation method thereof | |
| CN106521306A (en) | Heat treatment method for Cr-Mo wear-resistant cast iron | |
| CN106702256A (en) | Ductile cast iron worm wheel and preparation method thereof | |
| CN106435350A (en) | Phosphor copper titanium wear resistant cast iron and preparation method thereof | |
| CN106566978A (en) | Boron containing wear-resisting cast iron and preparation method thereof | |
| CN106756459A (en) | A kind of heat treatment method of cast iron transh pump | |
| CN106521305A (en) | Wear-resistant chrome-molybdenum cast iron and preparation method thereof | |
| CN106676250A (en) | Thermal treatment method for chilled cast iron roll | |
| CN106801184A (en) | A kind of cast iron ploughshare and preparation method thereof | |
| CN106967922A (en) | A kind of heat treatment method of the large-scale body of lathe bed | |
| CN107022715A (en) | A kind of heat treatment method of milling machine lathe bed | |
| CN106756463A (en) | A kind of cast iron tappet and preparation method thereof | |
| CN106854728A (en) | A kind of cast iron transh pump and preparation method thereof | |
| CN106399810A (en) | Heat treatment method for boracic wear resisting cast iron |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170531 |