CN1140205A - Medium-carbon medium-alloy wear-resisting steel - Google Patents
Medium-carbon medium-alloy wear-resisting steel Download PDFInfo
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- CN1140205A CN1140205A CN 95103151 CN95103151A CN1140205A CN 1140205 A CN1140205 A CN 1140205A CN 95103151 CN95103151 CN 95103151 CN 95103151 A CN95103151 A CN 95103151A CN 1140205 A CN1140205 A CN 1140205A
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Abstract
A middle-carbon, middle-alloy antiwear steel used as the liner and compartment plate of middle-size ball mill with greater load, the drum of roller crusher, the hammer of beater or impact crusher, and tooth plate of jaw crusher with service life 3-4 times longer than high-Mn steel contains such chemical components as C, Si, Mn, Cr, Mo, V, Re, P and S.
Description
The present invention relates to a kind of middle carbon interalloy wear resisting steel that is applied in the wear-resisting consumable accessory under the little working condition of surging force.
At present, this workpiece adopts high mangaenese steel as its material mostly.High mangaenese steel is a kind of wear-resisting alloy steel of using early.The problem that it mainly exists is:
1. for the little working condition of surging force, not wear-resisting because high mangaenese steel is difficult for forming work hardening layer,
2. for and under the little working condition of surging force at broken adamant material and since high mangaenese steel initial hardness after the water patent very low only be HB=179-229, so the hardened layer that also do not have enough time to form and be ground,
3. high mangaenese steel is single austenite structure, and extremely difficult magnetization contains Fe or Fe for requiring in the product
2O
3Amount has the occasion of strict demand, and using high mangaenese steel not have development is the difficulty that has increased magnetic separation, as producing refractory materials and abrasive material etc.
Purpose of the present invention is exactly that it is comparatively suitable to work out a kind of combination of strength and toughness according to the little working condition requirement of broken adamant material surging force, the easy middle carbon interalloy wear resisting steel of magnetic separation again,
This middle carbon interalloy wear resisting steel of the present invention, its Chemical Composition is as follows: (heavily managing per-cent)
C 0.45-0.65
Si 0.3-0.8
Mn 0.4-1.0
Cr 4.0-5.5
Mo 0.3-0.7
V 0.2-0.5
Re 0.02-0.05
P·S ≤0.040
All the other are Fe
1. carbon: be the most cheap element that improves the material wear-resistant performance, carbon is that basic alloy element forms the requisite element of carbide in the steel simultaneously, carbon content is low excessively, and then form carbide and reduce relatively, be comparatively suitable at 0.45-0.65% therefore as the Medium Alloy Steel carbon content.
2. manganese: under given carbon content, increase the most cheap method of hardening capacity and increase manganese content exactly.Manganese reduces the Ar of steel significantly
1The decomposition rate of temperature and austenite (A), manganese also can reduce the critical quenching rate of steel significantly, but manganese can not be too high, and too high manganese amount will increase the remained austenite content (RA) after quenching.
3. silicon: for wear resisting steel, the silicon amount is unsuitable too high, and ten thousand its design carbon content are higher, and silicon amount height reduces the toughness and the plasticity of steel to a certain extent.Therefore to be controlled at 0.3-0.8% comparatively suitable for this programme silicon.
4. chromium:
(1) improve the hardening capacity of this material,
(2) strengthen resistance to corrosion,
(3) strengthen resistance to tempering and wear resistance,
(4) form multiple carbide with carbon, improve the wear resistance of steel.
That chromium is controlled at 4.0-5.5% is comparatively suitable in the present invention for this reason.
5. molybdenum: be a kind of effective fortifier, it can suppress bainite and ferritic transformation significantly, through quench and the tempered low-alloy wear-resistant steel in, molybdenum can crystal grain thinning, increase hardening capacity and the minimizing susceptibility to temper brittleness.Simultaneously can increase the material resistance to corrosion.Add Cr and the Mo lath martensite that is easy to get simultaneously, can improve the comprehensive mechanical performance of this material.But the molybdenum amount is if too much, easily separate out needle type martensite, and the molybdenum cost is very high.So it is comparatively suitable that molybdenum is controlled at 0.3-0.7.
(6) vanadium: mainly be thinning microstructure, crystal grain thinning, the intensity and the toughness of raising steel form diffusion carbide, improve wear resistance, but the vanadium amount is unsuitable too high, and the too high toughness that then reduces on the contrary is advisable so this programme is controlled at 0.2-0.5%.
(7) rare earth: main effect is cleaning molten steel, good deoxidation, desulfidation are arranged, refined cast structure and improve distribution of carbides, but rare earth can not excessively add, so this programme is controlled at 0.02-0.05%.
(8) phosphorus, sulphur content are low more good more.
Carbon interalloy wear resisting steel in of the present invention, because of its combination of strength and toughness more suitable, relatively be fit to be applied in the working condition that bears bigger load, be fit to make medium-sized ball grinding machine lining board, bin isolation board, the roller of roller crusher, the tup of hammer impact crusher, bar also can be used for the workpiece such as tooth plate to the strict jaw crusher of magnetic tooth, improve 3-4 doubly than high mangaenese steel work-ing life, and magnetic concentration is brought up to 1-2 time by achieving the goal for original three times and achieved the goal.
Embodiment 1
Adopt the three-phawse arc furnace oxidation smelting,
Chemical Composition adds in the molten steel in following ratio proportioning (weight percent):
C 0.45
Si 0.3
Mn 0.4
Cr 4.0
Mo 0.3
V 0.02
Re 0.02
S ＜0.025
P ＜0.025
Oxidation period, decarburized amount 0.35%, shelves slag condition: C=0.45-0.5%, and P＜0.02%, temperature is 1540 ℃, tapping temperature is 1570-1590 ℃.Teeming temperature is 1470-1480 ℃.Smelt good molten steel casting φ 610 * 305 roll-type crusher rolls with this.Be 73 days work-ing life, than improving more than 1 times the work-ing life of high mangaenese steel.
Mechanical property:
Hardness HRC=52
AK＝1.5kg?5-M/cm
2
σ b≥110kg?5/mm
2
Metallographic structure is: tempered martensite+diffusion carbide+a small amount of lower bainite.
Embodiment 2
The employing medium-frequency induction furnace is smelted, and the feed stock for blast furnace composition is pressed following formula rate proportioning: (weight percent)
C 0.52
Si 0.8
Mn 0.51
Cr 4.2
Mo 0.5
V 0.3
Re 0.035
S ＜0.03
P ＜0.024
Tapping and teeming temperature are with embodiment 1.
With this smelting molten steel medium-sized ball grinding machine lining board of casting, bin isolation board, be 3 times of high mangaenese steel material work-ing life.
Mechanical property
Hardness HRC=54
αk＝2.5kg?5-M/cm
2
σ≥140kg?5/mm
2
Metallographic structure is: tempered martensite+diffusion carbide+a small amount of lower bainite.
Claims (2)
1. carbon interalloy wear resisting steel in a kind, it is characterized in that: its material Chemical Composition and content are as follows: (weight percent)
C 0.45-0.65
Si 0.3-0.8
Mn 0.4-1.0
Cr 4.0-5.5
Mo 0.3-0.7
V 0.2-0.5
Re 0.02-0.05
P·S ≤0.040
All the other are Fe
2. the preparation method of carbon interalloy wear resisting steel in a kind is characterized in that:
(1) adopt three-phawse arc furnace production, oxidation smelting, decarburized amount is 0.35%, pushing off the slag condition: C=0.45-0.5%, P≤0.02,1540 ℃ of temperature
(2) tapping temperature: 1570-1590 ℃,
(3) pouring temperature=1470-1480 ℃, insert Al amount 1.0kg/ ton eventually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95103151 CN1140205A (en) | 1995-03-28 | 1995-03-28 | Medium-carbon medium-alloy wear-resisting steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95103151 CN1140205A (en) | 1995-03-28 | 1995-03-28 | Medium-carbon medium-alloy wear-resisting steel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1140205A true CN1140205A (en) | 1997-01-15 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95103151 Pending CN1140205A (en) | 1995-03-28 | 1995-03-28 | Medium-carbon medium-alloy wear-resisting steel |
Country Status (1)
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| CN (1) | CN1140205A (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100413988C (en) * | 2005-10-27 | 2008-08-27 | 广东省韶关钢铁集团有限公司 | Hammer for hammer crusher |
| CN100449027C (en) * | 2005-06-09 | 2009-01-07 | 关铁 | High strength abrasion resistant steel and method for producing the same |
| CN102660713A (en) * | 2012-05-23 | 2012-09-12 | 攀枝花市白云铸造有限责任公司 | Sectional hardness low-alloy steel hammer head and thermal treatment method thereof |
| WO2014019353A1 (en) | 2012-07-31 | 2014-02-06 | 宝山钢铁股份有限公司 | Abrasion resistant steel plate with super-high strength and high toughness, and process for preparing same |
| WO2014019352A1 (en) | 2012-07-31 | 2014-02-06 | 宝山钢铁股份有限公司 | Abrasion resistant steel plate with high strength and high toughness, and process for preparing same |
| WO2014019354A1 (en) | 2012-07-31 | 2014-02-06 | 宝山钢铁股份有限公司 | Abrasion resistant steel plate with high strength and high toughness, and process for preparing same |
| CN103990517A (en) * | 2014-05-30 | 2014-08-20 | 顾开明 | Two-bin blind plate for ball mill |
| WO2014154140A1 (en) | 2013-03-28 | 2014-10-02 | 宝山钢铁股份有限公司 | Low-alloy high-performance wear-resistant steel plate and manufacturing method therefor |
| WO2014154106A1 (en) | 2013-03-28 | 2014-10-02 | 宝山钢铁股份有限公司 | Low-alloy high-hardness wear-resistant steel plate and manufacturing method therefor |
| WO2014154104A1 (en) | 2013-03-28 | 2014-10-02 | 宝山钢铁股份有限公司 | Low alloy high toughness wear-resistant steel plate and manufacturing method thereof |
| CN104087856A (en) * | 2014-06-24 | 2014-10-08 | 宁国市正兴耐磨材料有限公司 | Liner plate for ball mill |
| CN104928565A (en) * | 2015-03-27 | 2015-09-23 | 中信重工机械股份有限公司 | Manufacturing method of ball mill storehouse separation grid plate |
-
1995
- 1995-03-28 CN CN 95103151 patent/CN1140205A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100449027C (en) * | 2005-06-09 | 2009-01-07 | 关铁 | High strength abrasion resistant steel and method for producing the same |
| CN100413988C (en) * | 2005-10-27 | 2008-08-27 | 广东省韶关钢铁集团有限公司 | Hammer for hammer crusher |
| CN102660713B (en) * | 2012-05-23 | 2014-04-16 | 攀枝花市白云铸造有限责任公司 | Sectional hardness low-alloy steel hammer head and thermal treatment method thereof |
| CN102660713A (en) * | 2012-05-23 | 2012-09-12 | 攀枝花市白云铸造有限责任公司 | Sectional hardness low-alloy steel hammer head and thermal treatment method thereof |
| WO2014019353A1 (en) | 2012-07-31 | 2014-02-06 | 宝山钢铁股份有限公司 | Abrasion resistant steel plate with super-high strength and high toughness, and process for preparing same |
| WO2014019354A1 (en) | 2012-07-31 | 2014-02-06 | 宝山钢铁股份有限公司 | Abrasion resistant steel plate with high strength and high toughness, and process for preparing same |
| WO2014019352A1 (en) | 2012-07-31 | 2014-02-06 | 宝山钢铁股份有限公司 | Abrasion resistant steel plate with high strength and high toughness, and process for preparing same |
| WO2014154140A1 (en) | 2013-03-28 | 2014-10-02 | 宝山钢铁股份有限公司 | Low-alloy high-performance wear-resistant steel plate and manufacturing method therefor |
| WO2014154106A1 (en) | 2013-03-28 | 2014-10-02 | 宝山钢铁股份有限公司 | Low-alloy high-hardness wear-resistant steel plate and manufacturing method therefor |
| WO2014154104A1 (en) | 2013-03-28 | 2014-10-02 | 宝山钢铁股份有限公司 | Low alloy high toughness wear-resistant steel plate and manufacturing method thereof |
| CN103990517A (en) * | 2014-05-30 | 2014-08-20 | 顾开明 | Two-bin blind plate for ball mill |
| CN104087856A (en) * | 2014-06-24 | 2014-10-08 | 宁国市正兴耐磨材料有限公司 | Liner plate for ball mill |
| CN104928565A (en) * | 2015-03-27 | 2015-09-23 | 中信重工机械股份有限公司 | Manufacturing method of ball mill storehouse separation grid plate |
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