CN101492793A - Medium-lower alloy abrasion resistant steel - Google Patents
Medium-lower alloy abrasion resistant steel Download PDFInfo
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- CN101492793A CN101492793A CNA2009100941273A CN200910094127A CN101492793A CN 101492793 A CN101492793 A CN 101492793A CN A2009100941273 A CNA2009100941273 A CN A2009100941273A CN 200910094127 A CN200910094127 A CN 200910094127A CN 101492793 A CN101492793 A CN 101492793A
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Abstract
The invention discloses a medium-and low-alloy wear resisting steel. The steel comprises the following main chemical composition by weight percentage: 0.3-0.45% of C, 2-3.5% Mn, 0.05-0.2% of Ti, 0.08-0.15% of Y, 1-2.5% of Si, 0.05-0.2% of V, 0.003-0.005% of B, less than or equal to 0.045% of P, less than or equal to 0.04% of S, with the rest being Fe. The medium-and low-alloy wear resisting steel has good wear resisting property and high hardness with the Rockwell hardness ranging from 45 degrees to 55 degrees, good ductility, thereby being not easy to break, and low production cost; the medium-and low-alloy wear resisting steel can be used for producing steel balls, grinding bodies, lining boards, plate hammers and the like for large ball mills.
Description
Technical field
The present invention relates to a kind of alloy material, more particularly, relate to a kind of middle low-alloy abrasion-proof steel.
Background technology
Wearing and tearing are department's ubiquities such as mine, cement, fuel-burning power plant, phosphorus ore and cause equipment failure or the major cause of material breakage, also are to cause one of maximum problem of financial loss.And pulverize in the mechanical means of grinding at material, grinding element is indispensable supporting machinery product.At present most of grinding element that uses all is the chromium ball, and the chromium ball has excellent abrasive, but it has the following disadvantages: 1. alloying element content height, production cost height; 2. poor toughness, easy fracture, easily broken; 3. lose circle easily.
Summary of the invention
The object of the present invention is to provide a kind of hardness height, wear resistance is good, good toughness, easy fracture not, the middle low-alloy wear-resistant steel that production cost is low.
For achieving the above object, the present invention is achieved by the following technical solutions:
The low-alloy wear-resistant steel main chemical by weight percentage in of the present invention: carbon (C) 0.2~0.5%, manganese (Mn) 1.8~3.8%, titanium (Ti) 0.04~0.25%, Yttrium base rare earth (Y) 0.07~0.18%, silicon (Si) 0.8~2.8%, alum (V) 0.04~0.25%, boron (B) 0.002~0.007%, phosphorus (P)≤0.05%, sulphur (S)≤0.045%, all the other are iron (Fe).
Carbon (C): carbon content is bigger to alloy abrasion resistant steel tissue and performance impact, and alloy wear-resisting cast steel generally all uses under the Q-tempering state, under the constant prerequisite of other alloying element, changes carbon content, and the variation of essence can take place for its tissue and performance.
Silicon (Si): but silicon strongly inhibited carbide separate out and make rich carbon austenitic have high stability, the toughness of steel is significantly improved, but silicon is too high, the impelling strength of steel is descended.
Manganese (Mn): be main strengthening element, major part is dissolved in ferrite, strengthens matrix, reduces the carbide speed of separating out, improve the hardening capacity of steel, increase wear resistance, but cross thermo-responsive element, the temperature of quenching is too high, can cause that crystal grain is thick, increases the temper brittleness tendency of steel.
Vanadium (V): vanadium is a grain-refining agent, is strong carbide forming element, can improve in wear resisting steel and mould row, toughness, cooperates with Ti, is improving a lot than wear-resistant grinding abrasion performance under the high impact loads.
Titanium (Ti): titanium is a strong type phosphide element, crystal grain thinning.
Boron (B): improve the hardening capacity of steel strongly, improve the obdurability of steel.
Yttrium base rare earth (Y): but the Yttrium base rare earth cleaning molten steel used, improve the quality of steel, improve crystallization, optimize the mechanical property of tissue and increase steel.
Phosphorus (P), sulphur (S): p and s is an inevitable harmful element in the steel, should control it, makes phosphorus (P)≤0.045%, sulphur (S)≤0.04%.
The best proportioning of low-alloy wear-resistant steel main chemical is by weight percentage in of the present invention: carbon (C) 0.3~0.45%, manganese (Mn) 2~3.5%, titanium (Ti) 0.05~0.2%, Yttrium base rare earth (Y) 0.08~0.15%, silicon (Si) 1~2.5%, alum (V) 0.05~0.2%, boron (B) 0.003~0.005%, phosphorus (P)≤0.045%, sulphur (S)≤0.04%, all the other are iron (Fe).
The middle low-alloy wear-resistant steel of producing according to this prescription has following beneficial effect: 1. hardness height, and Rockwell hardness is between 45 ° to 55 °; 2. wear resistance is good; 3. good toughness, not easy fracture; 4. cost is low.
The middle low-alloy wear-resistant steel that the present invention proposes can be made different products according to the difference of heat treatment mode, as: the grinding element that steel ball, large-size ball mill are used, liner plate, bar etc.
1, produce the shredder liner plate, its production technique is: to be adjusted to branch in the stokehold according to the Chemical Composition proportioning qualified for the batching of low-alloy wear-resistant steel in 1. will producing; 2. steel scrap is dropped into the fusing of intermediate frequency furnace or electric arc furnace smelting; 3. drop into carbon, manganese, titanium, silicon, alum, boron in proportion, pyrotic smelting to 1500 ℃~1700 ℃ adds Yttrium base rare earth by proportioning during tapping; 4. casting as required; 5. finishing polishing; 6. room temperature is heated to 950 ℃, is incubated 2 hours, air quenching, 250 ℃ of tempering 4 hours.
2, produce the shredder grinding element, its production technique is: to be adjusted to branch in the stokehold according to the Chemical Composition proportioning qualified for the batching of low-alloy wear-resistant steel in 1. will producing; 2. steel scrap is dropped into the fusing of intermediate frequency furnace or electric arc furnace smelting; 3. drop into carbon, manganese, titanium, silicon, alum, boron in proportion, pyrotic smelting to 1500 ℃~1700 ℃ adds Yttrium base rare earth by proportioning during tapping; 4. technology cast such as mould or continuous caster, Sha Mo disappear; 5. finishing polishing; 6. forge and press balling-up.
The wear-resisting ball percentage of damage of producing according to this prescription is little, can not build mill, stifled mill, can improve the long-term unit-hour output of grinding machine of 5%-8%; From being ground to the little circle that do not lose greatly, bead can be reused tail storehouse or fine grinding.
Embodiment
The present invention is described further below in conjunction with the specific embodiment of producing grinding element, and each Chemical Composition is counted by weight percentage:
Claims (2)
1, a kind of middle low-alloy wear-resistant steel, it is characterized in that its Chemical Composition is by weight percentage: carbon (C) 0.2~0.5%, manganese (Mn) 1.8~3.8%, titanium (Ti) 0.04~0.25%, Yttrium base rare earth (Y) 0.07~0.18%, silicon (Si) 0.8~2.8%, alum (V) 0.04~0.25%, boron (B) 0.002~0.007%, phosphorus (P)≤0.05%, sulphur (S)≤0.045%, all the other are iron (Fe).
2, middle low-alloy wear-resistant steel according to claim 1, it is characterized in that its Chemical Composition is by weight percentage: carbon (C) 0.3~0.45%, manganese (Mn) 2~3.5%, titanium (Ti) 0.05~0.2%, Yttrium base rare earth (Y) 0.08~0.15%, silicon (Si) 1~2.5%, alum (V) 0.05~0.2%, boron (B) 0.003~0.005%, phosphorus (P)≤0.045%, sulphur (S)≤0.04%, all the other are iron (Fe).
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CN2009100941273A CN101492793B (en) | 2009-02-21 | 2009-02-21 | Medium-lower alloy abrasion resistant steel |
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CN2009100941273A CN101492793B (en) | 2009-02-21 | 2009-02-21 | Medium-lower alloy abrasion resistant steel |
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CN101492793A true CN101492793A (en) | 2009-07-29 |
CN101492793B CN101492793B (en) | 2011-06-15 |
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Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
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CN102251177A (en) * | 2011-07-12 | 2011-11-23 | 内蒙古包钢钢联股份有限公司 | High-strength steel plate containing rare earth and rolling method thereof |
CN102443741A (en) * | 2011-11-15 | 2012-05-09 | 攀钢集团工程技术有限公司 | Steel ball for ball mill and manufacturing method for same |
CN102534397A (en) * | 2010-12-23 | 2012-07-04 | 新东工业株式会社 | Steel projection material |
CN102888558A (en) * | 2011-09-30 | 2013-01-23 | 内蒙古包钢钢联股份有限公司 | La-containing high-strength steel plate and heat treatment technology thereof |
CN104593700A (en) * | 2014-12-31 | 2015-05-06 | 江苏科技大学 | In-situ synthesized boron-carbide particle-reinforced base steel wear-resistant composite material and preparation method of composite material |
CN115747646A (en) * | 2022-11-08 | 2023-03-07 | 内蒙古中天宏远稀土新材料股份公司 | Lining plate and production method thereof |
Families Citing this family (1)
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CN102943267B (en) * | 2012-12-12 | 2014-12-03 | 江苏新亚特钢锻造有限公司 | High abrasion-proof laser cladding nickel-base alloy powder and preparation method thereof |
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2009
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Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
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CN102534397A (en) * | 2010-12-23 | 2012-07-04 | 新东工业株式会社 | Steel projection material |
CN102534397B (en) * | 2010-12-23 | 2017-03-01 | 新东工业株式会社 | steel projection material |
CN102251177A (en) * | 2011-07-12 | 2011-11-23 | 内蒙古包钢钢联股份有限公司 | High-strength steel plate containing rare earth and rolling method thereof |
CN102888558A (en) * | 2011-09-30 | 2013-01-23 | 内蒙古包钢钢联股份有限公司 | La-containing high-strength steel plate and heat treatment technology thereof |
CN102443741A (en) * | 2011-11-15 | 2012-05-09 | 攀钢集团工程技术有限公司 | Steel ball for ball mill and manufacturing method for same |
CN102443741B (en) * | 2011-11-15 | 2013-11-27 | 攀钢集团工程技术有限公司 | Manufacturing method for steel ball for ball mill |
CN104593700A (en) * | 2014-12-31 | 2015-05-06 | 江苏科技大学 | In-situ synthesized boron-carbide particle-reinforced base steel wear-resistant composite material and preparation method of composite material |
CN115747646A (en) * | 2022-11-08 | 2023-03-07 | 内蒙古中天宏远稀土新材料股份公司 | Lining plate and production method thereof |
CN115747646B (en) * | 2022-11-08 | 2023-12-12 | 内蒙古中天宏远稀土新材料股份公司 | Lining plate and production method thereof |
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Assignee: Wearable Tonghai limited liability company Assignor: Ding Qi Contract record no.: 2010530000031 Denomination of invention: Medium-lower alloy abrasion resistant steel License type: Exclusive License Open date: 20090729 Record date: 20100802 |
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