CN101880828A - Preparation method of low-alloy manganese martensite wear resistant cast steel - Google Patents
Preparation method of low-alloy manganese martensite wear resistant cast steel Download PDFInfo
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- CN101880828A CN101880828A CN 201010228506 CN201010228506A CN101880828A CN 101880828 A CN101880828 A CN 101880828A CN 201010228506 CN201010228506 CN 201010228506 CN 201010228506 A CN201010228506 A CN 201010228506A CN 101880828 A CN101880828 A CN 101880828A
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- 229910001208 Crucible steel Inorganic materials 0.000 title claims abstract description 57
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 21
- 239000000956 alloy Substances 0.000 title claims abstract description 21
- 229910000734 martensite Inorganic materials 0.000 title claims abstract description 17
- 239000011572 manganese Substances 0.000 title claims abstract description 15
- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 title claims abstract description 10
- 229910052748 manganese Inorganic materials 0.000 title claims abstract description 10
- 238000000034 method Methods 0.000 claims abstract description 26
- 229910052761 rare earth metal Inorganic materials 0.000 claims abstract description 5
- 238000005266 casting Methods 0.000 claims description 23
- 238000003723 Smelting Methods 0.000 claims description 11
- 238000005495 investment casting Methods 0.000 claims description 11
- 239000004576 sand Substances 0.000 claims description 11
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 238000009413 insulation Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 150000002910 rare earth metals Chemical class 0.000 claims description 3
- 229910052804 chromium Inorganic materials 0.000 abstract description 3
- 229910052684 Cerium Inorganic materials 0.000 abstract description 2
- 229910052796 boron Inorganic materials 0.000 abstract description 2
- 229910052802 copper Inorganic materials 0.000 abstract description 2
- 229910052746 lanthanum Inorganic materials 0.000 abstract description 2
- 229910052710 silicon Inorganic materials 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 2
- 229910052777 Praseodymium Inorganic materials 0.000 abstract 1
- 241001062472 Stokellia anisodon Species 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 229910052758 niobium Inorganic materials 0.000 abstract 1
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 238000009628 steelmaking Methods 0.000 abstract 1
- 238000005496 tempering Methods 0.000 description 4
- 229910000851 Alloy steel Inorganic materials 0.000 description 3
- 238000005275 alloying Methods 0.000 description 3
- 229910019932 CrNiMo Inorganic materials 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910052750 molybdenum Inorganic materials 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 238000010791 quenching Methods 0.000 description 2
- 230000000171 quenching effect Effects 0.000 description 2
- 238000007669 thermal treatment Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000012271 agricultural production Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Abstract
The invention relates to a preparation method of low-alloy manganese martensite wear resistant cast steel, which belongs to the technical field of low-alloy wear resistant cast steel preparation. The method adopts Mn as the main alloy element, and adds a small amount of Si, Cr, Cu, B and rare earth elements (La, Ce, Nb, Pr) and other alloy elements, and the balance of Fe. The method adopts a conventional steelmaking process to smelt, casts, forms, water quenches after austenitizing, heats, insulates heat and tempers at low temperature. The produced wear resistant cast steel is organized into tempered martensite after being water quenched and tempered. The tensile strength Rm of the cast steel is more than 1800MPa, the regulated non-proportional extension strength Rp0.2 is more than 1600MPa, the elongation after break A is more than 5 percent, the unnotched impact toughness aK is more than 150J/cm<2> and the U-shaped notch impact energy aKU is more than 20J/cm<2>. The wear resistant cast steel has the advantages of low alloy element content, strong toughness and wear resistance, simple process and low cost, and can be used for manufacturing bucket teeth, hammers, tooth plates, linings, crawler boards and other wear resistant cast steel.
Description
Technical field
The present invention relates to a kind of preparation method of low-alloy manganese martensite wear resistant cast steel, belong to the low-alloy wear-resistant steel preparing technical field.
Background technology
In industrial and agricultural production, fields such as agricultural machinery, steel rolling, forging and pressing, communications and transportation, generating, mine, oil, chemical industry, weapons are very big to the demand of wearable cast steel.Low-alloy Q-tempering martensite wear resistant cast steel generally adopts noble elements such as Cr, Ni, Mo as main alloy element.Carbon content is selected 0.34～0.38wt.%, by shrend behind 850～900 ℃ of austenitizings, obtains tempered martensite 200～300 ℃ of low-temperaturetemperings then.This low-alloy Q-tempering martensite wear resistant cast steel hardness can reach more than the 50HRC, but impelling strength is very low, non-notch merit A under the normal temperature
KUsually below 50J.In order to improve its obdurability, need to add a large amount of alloying element Ni usually.The typical steel grade that this class contains Ni high-strong toughness Q-tempering martensite wear resistant cast steel is the U.S.'s " super wearable cast steel of SL ".The super wearable cast steel interalloy of SL element Cr is 1.2wt.%, and Mo is 0.5wt.%, and Ni is up to 4wt.%.Behind the super wearable cast steel casting of SL, thermal treatment process is that 1200 ℃ of homogenizing are handled, long-time timeliness after 840 ℃ of shrends and the 150 ℃ of low-temperaturetemperings, and the thermal treatment power consumption is big.Therefore, Q-tempering martensite CrNiMo wear-resistant steel alloy element is many, and the cost height in order to obtain good combination of strength and toughness, has to consume a large amount of valuable alloying element Ni.
Summary of the invention
The objective of the invention is to propose a kind of preparation method of low-alloy manganese martensite wear resistant cast steel, employing Mn is a main alloy element, and (Nb Pr) waits alloying element for La, Ce to add a spot of Si, Cr, Cu, B and rare earth element.Obtain tempered martensite by low-temperaturetempering behind shrend or the oil quenching, to obtain the high-performance and low-cost low-alloy wear-resistant steel of good combination of strength and toughness.
The preparation method of the low-alloy manganese martensite wear resistant cast steel that the present invention proposes comprises following each step:
(1) with after the conventional process for making smelting, with sand mold casting or precision casting process casting, the weight percent of each composition is in the steel:
C：0.28～0.48wt.％；
Si：0.20～1.50wt.％；
Mn：1.85～3.50wt.％；
Cr：0.30～0.90wt.％；
Cu：0～0.90wt.％；
P：0.01～0.03wt.％；
S：0.01～0.03wt.％；
B：0～0.008wt.％；
Rare-Earth Ce: 0.05～0.25wt.%;
All the other are Fe;
(2) above-mentioned cast steel is heated to 830～900 ℃ of austenitizings, is incubated after 2-5 hour stove and is as cold as room temperature and carries out anneal;
(3) above-mentioned cast steel is heated to 830～900 ℃ of austenitizings, is incubated after 1-2 hour shrend to 80～150 ℃;
(4) above-mentioned cast steel being carried out low-temperaturetempering in 2～5 hours 200～250 ℃ of insulations handles.
The preparation method of the low-alloy manganese martensite wear resistant cast steel that the present invention proposes, adopting cheap manganese is main alloy element, it is many to overcome low-alloy CrNiMo wear-resistant steel alloy element, and the weak point that cost is high adapts to national resource-conserving development strategy.Simultaneously, the tempered martensite that obtains of wearable cast steel quenching low-temperaturetempering of the present invention can obtain good highly malleablized and cooperates.The mechanical property of cast steel can reach: tensile strength R
m＞1800MPa, regulation disproportional extension strength R
P0.2＞1600MPa, elongation after fracture A＞5%, non-notch impact toughness a
K＞150J/cm
2, U type notch shock merit a
KU＞20J/cm
2This wear-resistant steel alloy constituent content is few, and combination of strength and toughness and wear resisting property are good, and technology is simple, and is with low cost, can be used for making wear-resistant cast steel partses such as bucket tooth, tup, tooth plate, liner plate, grip-pad.
Embodiment
The preparation method of the low-alloy manganese martensite wear resistant cast steel that the present invention proposes comprises following each step:
(1) with after the conventional process for making smelting, with sand mold casting or precision casting process casting, the weight percent of each composition is in the steel:
C：0.28～0.48wt.％；
Si：0.20～1.50wt.％；
Mn：1.85～3.50wt.％；
Cr：0.30～0.90wt.％；
Cu：0～0.90wt.％；
P：0.01～0.03wt.％；
S：0.01～0.03wt.％；
B：0～0.008wt.％；
Rare-Earth Ce: 0.05～0.25wt.%;
All the other are Fe;
(2) above-mentioned cast steel is heated to 830～900 ℃ of austenitizings, is incubated after 2-5 hour stove and is as cold as room temperature and carries out anneal;
(3) above-mentioned cast steel is heated to 830～900 ℃ of austenitizings, is incubated after 1-2 hour shrend to 80～150 ℃;
(4) above-mentioned cast steel being carried out low-temperaturetempering in 2～5 hours 200～250 ℃ of insulations handles.
Below introduce embodiments of the invention:
The preparation method of the various embodiments described above is as follows:
Embodiment 1
(1) with after the conventional process for making smelting,, pours into a mould the Kiel sample simultaneously with sand mold casting or precision casting process casting.
(2) above-mentioned cast steel is heated to 880 ℃ of austenitizings, is incubated after 3 hours stove and is as cold as room temperature and carries out anneal.
(3) above-mentioned cast steel is heated to 860 ℃ of austenitizings, is incubated and is quenched into 120 ℃ after 1 hour.
(4) above-mentioned cast steel is heated to 220 ℃, is incubated 3 hours and carries out temper.
Embodiment 2
(1) with after the conventional process for making smelting,, pours into a mould the Kiel sample simultaneously with sand mold casting or precision casting process casting.
(2) above-mentioned cast steel is heated to 880 ℃ of austenitizings, is incubated after 3 hours stove and is as cold as room temperature and carries out anneal.
(3) above-mentioned cast steel is heated to 860 ℃ of austenitizings, is incubated and is quenched into 110 ℃ after 1 hour.
(4) above-mentioned cast steel is heated to 230 ℃, is incubated 3 hours and carries out temper.
Embodiment 3
(1) with after the conventional process for making smelting,, pours into a mould the Kiel sample simultaneously with sand mold casting or precision casting process casting.
(2) above-mentioned cast steel is heated to 880 ℃ of austenitizings, is incubated after 3 hours stove and is as cold as room temperature and carries out anneal.
(3) above-mentioned cast steel is heated to 850 ℃ of austenitizings, is incubated and is quenched into 110 ℃ after 1 hour.
(4) above-mentioned cast steel is heated to 220 ℃, is incubated 3 hours and carries out temper.
Embodiment 4
(1) with after the conventional process for making smelting,, pours into a mould the Kiel sample simultaneously with sand mold casting or precision casting process casting.
(2) above-mentioned cast steel is heated to 880 ℃ of austenitizings, is incubated after 3 hours stove and is as cold as room temperature and carries out anneal.
(3) above-mentioned cast steel is heated to 850 ℃ of austenitizings, is incubated and is quenched into 120 ℃ after 1 hour.
(4) above-mentioned cast steel is heated to 220 ℃, is incubated 3 hours and carries out temper.
Embodiment 5
(1) with after the conventional process for making smelting,, pours into a mould the Kiel sample simultaneously with sand mold casting or precision casting process casting.
(2) above-mentioned cast steel is heated to 880 ℃ of austenitizings, is incubated after 3 hours stove and is as cold as room temperature and carries out anneal.
(3) above-mentioned cast steel is heated to 850 ℃ of austenitizings, is incubated and is quenched into 110 ℃ after 1 hour.
(4) above-mentioned cast steel is heated to 220 ℃, is incubated 3 hours and carries out temper.
Embodiment 6
(1) with after the conventional process for making smelting,, pours into a mould the Kiel sample simultaneously with sand mold casting or precision casting process casting.
(2) above-mentioned cast steel is heated to 880 ℃ of austenitizings, is incubated after 3 hours stove and is as cold as room temperature and carries out anneal.
(3) above-mentioned cast steel is heated to 850 ℃ of austenitizings, is incubated and is quenched into 90 ℃ after 1 hour.
(4) above-mentioned cast steel is heated to 220 ℃, is incubated 3 hours and carries out temper.
Embodiment 7
(1) with after the conventional process for making smelting,, pours into a mould the Kiel sample simultaneously with sand mold casting or precision casting process casting.
(2) above-mentioned cast steel is heated to 880 ℃ of austenitizings, is incubated after 3 hours stove and is as cold as room temperature and carries out anneal.
(3) above-mentioned cast steel is heated to 850 ℃ of austenitizings, is incubated and is quenched into 90 ℃ after 1 hour.
(4) above-mentioned cast steel is heated to 230 ℃, is incubated 3 hours and carries out temper.
Embodiment 8
(1) with after the conventional process for making smelting,, pours into a mould the Kiel sample simultaneously with sand mold casting or precision casting process casting.
(2) above-mentioned cast steel is heated to 880 ℃ of austenitizings, is incubated after 3 hours stove and is as cold as room temperature and carries out anneal.
(3) above-mentioned cast steel is heated to 850 ℃ of austenitizings, is incubated and is quenched into 100 ℃ after 1 hour.
(4) above-mentioned cast steel is heated to 230 ℃, is incubated 3 hours and carries out temper.
Claims (1)
1. the preparation method of a low-alloy manganese martensite wear resistant cast steel is characterized in that this method comprises following each step:
(1) with after the conventional process for making smelting, with sand mold casting or precision casting process casting, the weight percent of each composition is in the steel:
C：0.28～0.48wt.％；
Si：0.20～1.50wt.％；
Mn：1.85～3.50wt.％；
Cr：0.30～0.90wt.％；
Cu：0～0.90wt.％；
P：0.01～0.03wt.％；
S：0.01～0.03wt.％；
B：0～0.008wt.％；
Rare-Earth Ce: 0.05～0.25wt.%;
All the other are Fe;
(2) above-mentioned cast steel is heated to 830～900 ℃ of austenitizings, is incubated after 2-5 hour stove and is as cold as room temperature and carries out anneal;
(3) above-mentioned cast steel is heated to 830～900 ℃ of austenitizings, is incubated after 1-2 hour shrend to 80～150 ℃;
(4) above-mentioned cast steel being carried out low-temperaturetempering in 2～5 hours 200～250 ℃ of insulations handles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010228506XA CN101880828B (en) | 2010-07-09 | 2010-07-09 | Preparation method of low-alloy manganese martensite wear resistant cast steel |
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|---|---|---|---|
| CN201010228506XA CN101880828B (en) | 2010-07-09 | 2010-07-09 | Preparation method of low-alloy manganese martensite wear resistant cast steel |
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| CN101880828A true CN101880828A (en) | 2010-11-10 |
| CN101880828B CN101880828B (en) | 2012-01-18 |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102303212A (en) * | 2011-06-24 | 2012-01-04 | 成都申信达机械有限公司 | Process for manufacturing lining board of wet-spraying machine |
| CN102660712A (en) * | 2012-06-08 | 2012-09-12 | 黄凯敏 | Improved 30CrMnSi steel |
| CN102758139A (en) * | 2011-04-29 | 2012-10-31 | 范黔伟 | ZG10Cr1Mn1Si1A batten martensite wear-resistant low-alloy steel and manufacturing method thereof |
| CN102876981A (en) * | 2012-10-17 | 2013-01-16 | 夏雨 | Method for preparing medium and low carbon chrome-silicon-manganese martensite cast steel with hardening surface layer |
| CN102877073A (en) * | 2012-10-17 | 2013-01-16 | 常熟天地煤机装备有限公司 | Technology for processing CrNiMo series steel material |
| CN103627960A (en) * | 2013-12-10 | 2014-03-12 | 南昌航空大学 | Wear-resistant cast steel |
| CN110076296A (en) * | 2019-04-24 | 2019-08-02 | 焦作市威尔瑞福工业技术有限公司 | A kind of NEW TYPE OF COMPOSITE tooth plate casting method of high-power high throughput crusher |
| CN113462856A (en) * | 2021-07-02 | 2021-10-01 | 太原理工大学 | Heat treatment method for improving toughness of steel casting of middle trough ledge of scraper conveyor |
| CN115652185A (en) * | 2022-11-07 | 2023-01-31 | 中煤张家口煤矿机械有限责任公司 | Preparation method of high-strength low-alloy wear-resistant cast steel |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1042950A (en) * | 1989-12-30 | 1990-06-13 | 清华大学 | Bainite/martensite multi-phase steel with air-cooled high hardenability |
| EP1025272A1 (en) * | 1997-07-28 | 2000-08-09 | Exxon Mobil Upstream Research Company | Ultra-high strength, weldable steels with excellent ultra-low temperature toughness |
| CN101654728A (en) * | 2009-09-25 | 2010-02-24 | 清华大学 | Method for preparing manganese chilled bainitic steel |
-
2010
- 2010-07-09 CN CN201010228506XA patent/CN101880828B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1042950A (en) * | 1989-12-30 | 1990-06-13 | 清华大学 | Bainite/martensite multi-phase steel with air-cooled high hardenability |
| EP1025272A1 (en) * | 1997-07-28 | 2000-08-09 | Exxon Mobil Upstream Research Company | Ultra-high strength, weldable steels with excellent ultra-low temperature toughness |
| CN101654728A (en) * | 2009-09-25 | 2010-02-24 | 清华大学 | Method for preparing manganese chilled bainitic steel |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102758139A (en) * | 2011-04-29 | 2012-10-31 | 范黔伟 | ZG10Cr1Mn1Si1A batten martensite wear-resistant low-alloy steel and manufacturing method thereof |
| CN102303212A (en) * | 2011-06-24 | 2012-01-04 | 成都申信达机械有限公司 | Process for manufacturing lining board of wet-spraying machine |
| CN102660712A (en) * | 2012-06-08 | 2012-09-12 | 黄凯敏 | Improved 30CrMnSi steel |
| CN102660712B (en) * | 2012-06-08 | 2014-07-30 | 中兴能源装备股份有限公司 | Improved 30CrMnSi steel |
| CN102876981A (en) * | 2012-10-17 | 2013-01-16 | 夏雨 | Method for preparing medium and low carbon chrome-silicon-manganese martensite cast steel with hardening surface layer |
| CN102877073A (en) * | 2012-10-17 | 2013-01-16 | 常熟天地煤机装备有限公司 | Technology for processing CrNiMo series steel material |
| CN102877073B (en) * | 2012-10-17 | 2014-11-19 | 常熟天地煤机装备有限公司 | Technology for processing CrNiMo series steel material |
| CN103627960A (en) * | 2013-12-10 | 2014-03-12 | 南昌航空大学 | Wear-resistant cast steel |
| CN110076296A (en) * | 2019-04-24 | 2019-08-02 | 焦作市威尔瑞福工业技术有限公司 | A kind of NEW TYPE OF COMPOSITE tooth plate casting method of high-power high throughput crusher |
| CN113462856A (en) * | 2021-07-02 | 2021-10-01 | 太原理工大学 | Heat treatment method for improving toughness of steel casting of middle trough ledge of scraper conveyor |
| CN115652185A (en) * | 2022-11-07 | 2023-01-31 | 中煤张家口煤矿机械有限责任公司 | Preparation method of high-strength low-alloy wear-resistant cast steel |
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| CN101880828B (en) | 2012-01-18 |
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