CN106367676A - Vanadium-titanium wear resistant cast iron and preparation method thereof - Google Patents
Vanadium-titanium wear resistant cast iron and preparation method thereof Download PDFInfo
- Publication number
- CN106367676A CN106367676A CN201610955293.8A CN201610955293A CN106367676A CN 106367676 A CN106367676 A CN 106367676A CN 201610955293 A CN201610955293 A CN 201610955293A CN 106367676 A CN106367676 A CN 106367676A
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- iron
- cast iron
- wear resistant
- vanadium
- resistant 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
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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
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- 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)
Abstract
The invention discloses vanadium-titanium wear resistant cast iron and a preparation method thereof. The vanadium-titanium wear resistant cast iron comprises, by weight, 2.9-3.8% of C, 1.2-2.2% of Si, 0.5-1.3% of Mn, 0.16-0.37% of V, 0.03-0.17% of Ti, no more than 0.2% of P, no more than 0.10% of S, and the balance Fe. The preparation method comprises the steps of blending, preheating, smelting, on-the-spot quick analysis, final deoxidization, inoculation and pouring. According to the preparation method, the smelting technology is simple, and the adding amount of vanadium and titanium is strictly controlled, so that the wear resistance of the cast iron is 1-2 times that of commonly inoculated cast iron marked as HT200 and HT250, waste steel is less used, and the vanadium-titanium wear resistant cast iron is specially suitable for casting machine guide rails.
Description
Technical field
The present invention relates to the production technical field of ferrous metal, especially a kind of vanadium titanium wear resistant cast iron and preparation method thereof.
Background technology
Vanadium titanium wear resistant cast iron is a kind of antifriction material of function admirable, the use that it has very high hardness and extends foundry goods
The feature in life-span.Vanadium in vanadium titanium wear resistant cast iron, titanium two element and carbon nitrogen have very big affinity.Form distinctive vanadium titanium carbon nitrogen
Compound, these compounds have very high microhardness, up to 960～1840hv, are distributed in matrix in tiny Hard Inclusion
Among tissue, the Wear vesistance of cast iron is made to greatly improve.There is abundant vanadium titanium symbiotic iron ore resource in Southwestern China area.Fully profit
With the resources characteristic of China, therefore, develop vanadium-titanium cast iron, to extend the service life of foundry goods.
Content of the invention
The required technical problem solving of the present invention is to provide a kind of vanadium titanium wear resistant cast iron and preparation method thereof.Cast by controlling
In ferrum, the addition of vanadium and titanium, casts out wear resistant 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～
3.8%th, si1.2～2.2%, mn0.5～1.3%, v0.16～0.37%, ti0.03～0.17%, p≤0.2%, s≤0.10%, surplus
For fe.
A kind of method preparing vanadium titanium wear resistant cast iron, including following several steps:
The first step: dispensing: by steel scrap, foundry returns, the pig iron, ferromanganese, ferrosilicon press c2.9～3.8%, si1.2～2.2%, mn0.5～
1.3%th, v0.16～0.37%, ti0.03～0.17%, p≤0.2%, s≤0.10%, the mode of balance of fe percentage by weight is carried out
Dispensing；Second step: preheating: by optimization calculate steel scrap, foundry returns, the pig iron put into intermediate frequency furnace in preheated；
3rd step: melting: after the steel scrap in intermediate frequency furnace, foundry returns, pig iron fusing, put into its quantity be furnace charge 15～
22%, composition is that the deoxidizer of Calx 70%+ fluorite 30% carries out pre-deoxidation, then puts into the ferromanganese that baking processes and ferrosilicon obtains ferrum
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 1460～1580 DEG C, puts into the aluminum that its quantity is iron liquid 0.1～0.3%
Carry out final deoxidizing；
6th step: inoculation: iron liquid flows to from intermediate frequency furnace and carries out inoculation during casting ladle, 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 1420～1470 DEG C, poured into a mould, obtain foundry goods.
The invention has the beneficial effects as follows: smelting technology is simple, by the strict addition controlling vanadium and titanium, its wearability ratio
The common inoculation cast iron ht200 trade mark, the ht250 trade mark are high 1～2 times, and can use steel scrap less, are particularly suitable for casting machine guide rail.
Specific embodiment
Embodiment 1:
A kind of method preparing vanadium titanium wear resistant cast iron of this example, including following several steps:
The first step: dispensing: by steel scrap, foundry returns, the pig iron, ferromanganese, ferrosilicon press c2.9%, si1.2%, mn0.5%, v0.16%,
Ti0.03%, p≤0.2%, s≤0.10%, the mode of balance of fe percentage by weight carries out dispensing；Second step: preheating: will optimize
The steel scrap that calculates, foundry returns, the pig iron put in intermediate frequency furnace and are preheated；
3rd step: melting: after the steel scrap in intermediate frequency furnace, foundry returns, pig iron fusing, putting into its quantity is furnace charge 15%, becomes
The deoxidizer being divided into Calx 70%+ fluorite 30% carries out pre-deoxidation, then puts into the ferromanganese that baking processes and ferrosilicon obtains 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 1460 DEG C, puts into the aluminum that its quantity is iron liquid 0.1% and carry out final deoxidizing；
6th step: inoculation: iron liquid flows to from intermediate frequency furnace and carries out inoculation during casting ladle, adds its quantity to be iron liquid amount
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 1420 DEG C, poured into a mould, obtain foundry goods.
Embodiment 2:
A kind of method preparing vanadium titanium wear resistant cast iron of this example, including following several steps:
The first step: dispensing: by steel scrap, foundry returns, the pig iron, ferromanganese, ferrosilicon press c3.35%, si1.7%, mn0.9%, v0.265%,
Ti0.1%, p≤0.2%, s≤0.10%, the mode of balance of fe percentage by weight carries out dispensing；Second step: preheating: meter will be optimized
Good steel scrap, foundry returns, the pig iron put in intermediate frequency furnace and are preheated；
3rd step: melting: after the steel scrap in intermediate frequency furnace, foundry returns, pig iron fusing, putting into its quantity is furnace charge 18%, becomes
The deoxidizer being divided into Calx 70%+ fluorite 30% carries out pre-deoxidation, then puts into the ferromanganese that baking processes and ferrosilicon obtains 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 1530 DEG C, puts into the aluminum that its quantity is iron liquid 0.2% and carry out final deoxidizing；
6th step: inoculation: iron liquid flows to from intermediate frequency furnace and carries out inoculation during casting ladle, 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 1445 DEG C, poured into a mould, obtain foundry goods.
Embodiment 3:
A kind of method preparing vanadium titanium wear resistant cast iron of this example, including following several steps:
The first step: dispensing: by steel scrap, foundry returns, the pig iron, ferromanganese, ferrosilicon press c3.8%, si2.2%, mn1.3%, v0.37%,
Ti0.17%, p≤0.2%, s≤0.10%, the mode of balance of fe percentage by weight carries out dispensing；Second step: preheating: will optimize
The steel scrap that calculates, foundry returns, the pig iron put in intermediate frequency furnace and are preheated；
3rd step: melting: after the steel scrap in intermediate frequency furnace, foundry returns, pig iron fusing, putting into its quantity is furnace charge 22%, becomes
The deoxidizer being divided into Calx 70%+ fluorite 30% carries out pre-deoxidation, then puts into the ferromanganese that baking processes and ferrosilicon obtains 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 1580 DEG C, puts into the aluminum that its quantity is iron liquid 0.3% and carry out final deoxidizing；
6th step: inoculation: iron liquid flows to from intermediate frequency furnace and carries out inoculation during casting ladle, 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 1470 DEG C, poured into a mould, obtain 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 limits by appended claims, where appointing on the basis of the claims in the present invention
What modification, equivalent and improvement etc., each fall within protection scope of the present invention it.
Claims (2)
1. a kind of vanadium titanium wear resistant cast iron it is characterised in that: the percentage by weight of its composition is: c2.9～3.8%, si1.2～
2.2%th, mn0.5～1.3%, v0.16～0.37%, ti0.03～0.17%, p≤0.2%, s≤0.10%, balance of fe.
2. a kind of method of the vanadium titanium wear resistant cast iron prepared described in claim 1 it is characterised in that: include following several steps:
The first step: dispensing: by steel scrap, foundry returns, the pig iron, ferromanganese, ferrosilicon press c2.9～3.8%, si1.2～2.2%, mn0.5～
1.3%th, v0.16～0.37%, ti0.03～0.17%, p≤0.2%, s≤0.10%, the mode of balance of fe percentage by weight is carried out
Dispensing；Second step: preheating: by optimization calculate steel scrap, foundry returns, the pig iron put into intermediate frequency furnace in preheated；
3rd step: melting: after the steel scrap in intermediate frequency furnace, foundry returns, pig iron fusing, put into its quantity be furnace charge 15～
22%, composition is that the deoxidizer of Calx 70%+ fluorite 30% carries out pre-deoxidation, then puts into the ferromanganese that baking processes and ferrosilicon obtains ferrum
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 1460～1580 DEG C, puts into the aluminum that its quantity is iron liquid 0.1～0.3%
Carry out final deoxidizing；
6th step: inoculation: iron liquid flows to from intermediate frequency furnace and carries out inoculation during casting ladle, 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 1420～1470 DEG C, poured into a mould, obtain foundry goods.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610955293.8A CN106367676A (en) | 2016-11-03 | 2016-11-03 | Vanadium-titanium wear resistant cast iron and preparation method thereof |
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| CN201610955293.8A CN106367676A (en) | 2016-11-03 | 2016-11-03 | Vanadium-titanium wear resistant cast iron and preparation method thereof |
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| CN201610955293.8A Pending CN106367676A (en) | 2016-11-03 | 2016-11-03 | Vanadium-titanium wear resistant cast iron and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109182889A (en) * | 2018-07-30 | 2019-01-11 | 天津立林钻头有限公司 | Novel anti-attrition, wear resistant cast iron and preparation method thereof |
| CN113584374A (en) * | 2021-07-16 | 2021-11-02 | 四川大学 | High-strength and high-wear-resistance vanadium-titanium cast iron brake drum |
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| CN101418412A (en) * | 2008-12-04 | 2009-04-29 | 攀钢集团研究院有限公司 | Metal die for pig casting machine |
| CN101781734A (en) * | 2010-04-12 | 2010-07-21 | 四川省富邦钒钛制动鼓有限公司 | Vanadium-titanium cast iron and production method thereof |
| US20120027636A1 (en) * | 2009-02-12 | 2012-02-02 | Teksid Do Brasil Ltda. | High resistance gray iron alloy for combustion engines and general casts |
| US20140290230A1 (en) * | 2011-04-01 | 2014-10-02 | Scania Cv Ab | Cast iron alloy and exhaust component manufactured thereby |
| CN105821285A (en) * | 2016-03-28 | 2016-08-03 | 繁昌县天和机械有限公司 | Method for preparing nanometer modified vanadium-titanium nodular cast iron |
-
2016
- 2016-11-03 CN CN201610955293.8A patent/CN106367676A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101418412A (en) * | 2008-12-04 | 2009-04-29 | 攀钢集团研究院有限公司 | Metal die for pig casting machine |
| US20120027636A1 (en) * | 2009-02-12 | 2012-02-02 | Teksid Do Brasil Ltda. | High resistance gray iron alloy for combustion engines and general casts |
| CN101781734A (en) * | 2010-04-12 | 2010-07-21 | 四川省富邦钒钛制动鼓有限公司 | Vanadium-titanium cast iron and production method thereof |
| US20140290230A1 (en) * | 2011-04-01 | 2014-10-02 | Scania Cv Ab | Cast iron alloy and exhaust component manufactured thereby |
| CN105821285A (en) * | 2016-03-28 | 2016-08-03 | 繁昌县天和机械有限公司 | Method for preparing nanometer modified vanadium-titanium nodular cast iron |
Non-Patent Citations (1)
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| 史鉴开 等: "《钒钛冷硬铸铁矿车轮》", 《现代铸铁》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109182889A (en) * | 2018-07-30 | 2019-01-11 | 天津立林钻头有限公司 | Novel anti-attrition, wear resistant cast iron and preparation method thereof |
| CN113584374A (en) * | 2021-07-16 | 2021-11-02 | 四川大学 | High-strength and high-wear-resistance vanadium-titanium cast iron brake drum |
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Application publication date: 20170201 |