CN103628000A - Alloy steel material for tungsten-containing mine hammerhead and preparation method thereof - Google Patents
Alloy steel material for tungsten-containing mine hammerhead and preparation method thereof Download PDFInfo
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- CN103628000A CN103628000A CN201310555850.3A CN201310555850A CN103628000A CN 103628000 A CN103628000 A CN 103628000A CN 201310555850 A CN201310555850 A CN 201310555850A CN 103628000 A CN103628000 A CN 103628000A
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Abstract
The invention relates to an alloy steel material for a tungsten-containing mine hammerhead, which contains the following chemical elements in percentage by mass: 0.4-0.6% of carbon, 1.0-1.3% of silicon, 2.7-3.1% of manganese, 5.2-5.5% of chromium, 0.7-0.9% of nickel, 0.9-1.1% of molybdenum, 3.2-3.5% of tungsten, 1.4-1.7% of zirconium, 0.04-0.06% of Sb, 0.2-0.3% of V, 0.12-0.15% of As, at most 0.05% of S, at most 0.05% of P and the balance of iron. By using medium-carbon low-manganese steel as the main material, the material has favorable toughness; the material contains the chromium, molybdenum, tungsten, Sb and many other alloy elements, and thus, has the characteristics of high hardness, high wear resistance and high temperature resistance; and the material is suitable for a crusher for crushing high-hardness ores with the particle size of 200mm below and especially suitable for the crusher operating at high temperature, and has long service life.
Description
Technical field
The present invention relates to wear-resistant metal material field, relate in particular to alloy steel material and preparation method thereof for the tup of a kind of tungstenic mine.
Background technology
The kind of hammer head material is a lot, the most frequently used is high mangaenese steel, be at first because of its hardness and wear resistance all higher, but it is found that now that actually this is not so, some occasion high mangaenese steel tup is not wear-resisting, and work-ing life is short, traces it to its cause, that high mangaenese steel will be in the situation that large surging force could produce the cementation zone of high rigidity, and not wear-resisting in the little situation of surging force; Also have Medium Manganese Steel tup, because it has higher hardness and toughness, more durable in the situation that surging force is not too large, and be magnetic; Rich chromium cast iron tup has good wear resistance, but toughness is poor, and brittle rupture easily occurs.Various materials all can not reach optimal effect, so the material of reasonable, develop simple and practical technique, are guaranteeing saving resource and the energy under the prerequisite of service requirements, have become focus and the difficult point in high-abrasive material field.
Summary of the invention
The object of the present invention is to provide alloy steel material and preparation method thereof for a kind of tungstenic mine tup, it is high that this alloy material has intensity, and wear resistance is good, good toughness, the strong high advantage of heat.
Technical scheme of the present invention is as follows:
A tungstenic mine tup alloy steel material, is characterized in that: chemical element composition and mass percent thereof that it contains are: carbon 0.4-0.6, silicon 1.0-1.3, manganese 2.7-3.1, chromium 5.2-5.5, nickel 0.7-0.9, molybdenum 0.9-1.1, tungsten 3.2-3.5, zirconium 1.4-1.7, Sb0.04-0.06, V0.2-0.3, As0.12-0.15, S≤0.05, P≤0.05, surplus are iron.
The production method of alloy steel material for described tungstenic mine tup, is characterized in that:
(1), preparing the pig iron and scrap iron originates as ferrous substrate in 1:1-2 ratio, the pig iron is added to drop in stove and melt, carry out desulfurization, deoxidation, employing refining agent initial refining, add alloying constituent and carry out alloying, then add scrap iron fusing, add refining agent secondary refining, detection and adjust chemical element component content to qualified, casting, casting postheat treatment etc.;
(2) in alloying process, to the lot sequence that drops into alloying element in stove, be: (1) silicon, manganese; (2) chromium, nickel, V; (3) molybdenum, tungsten, Sb; (4) other remaining components; The timed interval that each batch drops into element is 22-24 minute, after feeding intake, stirs.
Described casting postheat treatment is: first by room temperature, with 180-190 ℃/h of speed, be warming up to 500-510 ℃, insulation 60-70 minute, with 180-190 ℃/h of speed, be warming up to 700-710 ℃ again, with 160-170 ℃/h of speed, be cooled to 560-570 ℃ again, with 210-220 ℃/h of speed, be warming up to 940-950 ℃ again, insulation 3-4 hour; With 160-170 ℃/h of speed, be cooled to 570-580 ℃ again, then be warming up to 700-710 ℃ with 180-190 ℃/h of speed, then be cooled to 500-510 ℃ with 160-170 ℃/h of speed, insulation 50-60 minute; With 160-170 ℃/h of speed, be cooled to 220-230 ℃ again, insulation 2-3 hour; With 180-190 ℃/h of speed, be warming up to 340-350 ℃ again, then be cooled to 220-230 ℃ with 160-170 ℃/h of speed, then be warming up to 530-545 ℃ with 180-190 ℃/h of speed, insulation 2-3 hour, takes out air cooling and get final product.
Described refining agent is made by the raw material of following weight part: instrument comminuted steel shot 30-40, sodium sulfate 2-3, potassium aluminium sulfate 1-2, silicon-dioxide 3-4, BaCO3 2-3, vermiculite power 1-2, Starso 1-2, precipitated silica 3-4, jade powder 3-4, montmorillonite 1-2; Preparation method mixes each raw material, is heated to molten state, then, is poured into Quench in pure water, then is ground into 100-200 order powder; Gained powder is added and is equivalent to the silane resin acceptor kh-550 of powder weight 2-3%, the nano-carbon powder of 1-2%, after mixing, under 8-15Mpa, be pressed into base, then, at 900-950 ℃, calcine 3-4 hour, cooling after, be ground into again 150-250 order powder, obtain.
Beneficial effect of the present invention
The present invention is that in adopting, carbon low manganese steel, as material, has good toughness; Meanwhile, because of it, contain again the multiple alloying elements such as chromium, molybdenum, tungsten, Sb, there is high hardness and wear resistance, especially there is resistant to elevated temperatures feature; The present invention is applicable to granularity that broken hardness the is higher mineral breaker below 200mm, is particularly useful for the pulverizer of at high temperature operation, long service life.The present invention uses part scrap iron as raw material, and through secondary refining, rationally controls casting postheat treatment temperature, and throwing raw materials, makes more stable uniform of alloy quality in batches, improves comprehensive mechanical property.Refining agent of the present invention is for Foundry Production, and the degree of porosity obviously improving in yield rate, particularly foundry goods reduces 1-2 degree, can not produce pore at cast(ing) surface, and trapped oxide also obviously reduces, and oxide inclusion is 2 grades of left and right.
Embodiment
A tungstenic mine tup alloy steel material, chemical element composition and mass percent thereof that it contains are: carbon 0.4-0.6, silicon 1.0-1.3, manganese 2.7-3.1, chromium 5.2-5.5, nickel 0.7-0.9, molybdenum 0.9-1.1, tungsten 3.2-3.5, zirconium 1.4-1.7, Sb0.04-0.06, V0.2-0.3, As0.12-0.15, S≤0.05, P≤0.05, surplus are iron.
Described tungstenic mine tup is as follows by the production method of alloy steel material:
(1), preparing the pig iron and scrap iron originates as ferrous substrate in 1:1.6 ratio, the pig iron is added to drop in stove and melt, carry out desulfurization, deoxidation, employing refining agent initial refining, add alloying constituent and carry out alloying, then add scrap iron fusing, add refining agent secondary refining, detection and adjust chemical element component content to qualified, casting, casting postheat treatment etc.;
(2) in alloying process, to the lot sequence that drops into alloying element in stove, be: (1) silicon, manganese; (2) chromium, nickel, V; (3) molybdenum, tungsten, Sb; (4) other remaining components; The timed interval that each batch drops into element is 23 minutes, after feeding intake, stirs.
Described casting postheat treatment is: first by room temperature, with 185 ℃/h of speed, be warming up to 505 ℃, insulation 60-70 minute, then be warming up to 705 ℃ with 185/ hour speed, then be cooled to 565 ℃ with 165 ℃/h of speed, with 215 ℃/h of speed, be warming up to 945 ℃ again, be incubated 3.5 hours; With 165 ℃/h of speed, be cooled to 575 ℃ again, then be warming up to 705 ℃ with 185 ℃/h of speed, then be cooled to 505 ℃ with 165 ℃/h of speed, be incubated 55 minutes; With 165 ℃/h of speed, be cooled to 225 ℃ again, be incubated 2.5 hours; With 185 ℃/h of speed, be warming up to 345 ℃ again, then be cooled to 225 ℃ with 165 ℃/h of speed, then be warming up to 536 ℃ with 185 ℃/h of speed, be incubated 2.5 hours, take out air cooling and get final product.
Described refining agent by following weight part (kilogram) raw material make: instrument comminuted steel shot 35, sodium sulfate 2.5, potassium aluminium sulfate 1.5, silicon-dioxide 3.5, BaCO3 2.5, vermiculite power 1.5, Starso 1.5, precipitated silica 3.5, jade powder 3.5, montmorillonite 1.5; Preparation method mixes each raw material, is heated to molten state, then, is poured into Quench in pure water, then is ground into 160 order powder; Gained powder is added and is equivalent to the silane resin acceptor kh-550 of powder weight 2%, 2% nano-carbon powder, after mixing, under 12Mpa, be pressed into base, then, at 930 ℃, calcine 3.5 hours, cooling after, then be ground into 180 order powder, obtain.
Tungstenic of the present invention mine tup by the mechanical property of alloy steel material is: tensile strength 986MPa, yield strength 893MPa, unit elongation 15%, relative reduction in area 27%, impact absorbing energy 55J, impelling strength 65J/cm2, hardness 268HB.
Claims (4)
1. a tungstenic mine tup alloy steel material, is characterized in that: chemical element composition and mass percent thereof that it contains are: carbon 0.4-0.6, silicon 1.0-1.3, manganese 2.7-3.1, chromium 5.2-5.5, nickel 0.7-0.9, molybdenum 0.9-1.1, tungsten 3.2-3.5, zirconium 1.4-1.7, Sb0.04-0.06, V0.2-0.3, As0.12-0.15, S≤0.05, P≤0.05, surplus are iron.
2. the production method of alloy steel material for the tup of tungstenic according to claim 1 mine, is characterized in that:
(1), preparing the pig iron and scrap iron originates as ferrous substrate in 1:1-2 ratio, the pig iron is added to drop in stove and melt, carry out desulfurization, deoxidation, employing refining agent initial refining, add alloying constituent and carry out alloying, then add scrap iron fusing, add refining agent secondary refining, detection and adjust chemical element component content to qualified, casting, casting postheat treatment etc.;
(2) in alloying process, to the lot sequence that drops into alloying element in stove, be: (1) silicon, manganese; (2) chromium, nickel, V; (3) molybdenum, tungsten, Sb; (4) other remaining components; The timed interval that each batch drops into element is 22-24 minute, after feeding intake, stirs.
3. the production method of alloy steel material for the tup of tungstenic according to claim 2 mine, it is characterized in that: described casting postheat treatment is: first by room temperature, with 180-190 ℃/h of speed, be warming up to 500-510 ℃, insulation 60-70 minute, with 180-190 ℃/h of speed, be warming up to 700-710 ℃ again, with 160-170 ℃/h of speed, be cooled to 560-570 ℃ again, with 210-220 ℃/h of speed, be warming up to 940-950 ℃ again, insulation 3-4 hour; With 160-170 ℃/h of speed, be cooled to 570-580 ℃ again, then be warming up to 700-710 ℃ with 180-190 ℃/h of speed, then be cooled to 500-510 ℃ with 160-170 ℃/h of speed, insulation 50-60 minute; With 160-170 ℃/h of speed, be cooled to 220-230 ℃ again, insulation 2-3 hour; With 180-190 ℃/h of speed, be warming up to 340-350 ℃ again, then be cooled to 220-230 ℃ with 160-170 ℃/h of speed, then be warming up to 530-545 ℃ with 180-190 ℃/h of speed, insulation 2-3 hour, takes out air cooling and get final product.
4. the production method of alloy steel material for the tup of tungstenic according to claim 2 mine, is characterized in that: described refining agent is made by the raw material of following weight part: instrument comminuted steel shot 30-40, sodium sulfate 2-3, potassium aluminium sulfate 1-2, silicon-dioxide 3-4, BaCO3 2-3, vermiculite power 1-2, Starso 1-2, precipitated silica 3-4, jade powder 3-4, montmorillonite 1-2; Preparation method mixes each raw material, is heated to molten state, then, is poured into Quench in pure water, then is ground into 100-200 order powder; Gained powder is added and is equivalent to the silane resin acceptor kh-550 of powder weight 2-3%, the nano-carbon powder of 1-2%, after mixing, under 8-15Mpa, be pressed into base, then, at 900-950 ℃, calcine 3-4 hour, cooling after, be ground into again 150-250 order powder, obtain.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107217208A (en) * | 2017-05-27 | 2017-09-29 | 太仓明仕金属制造有限公司 | A kind of multi-functional sheet metal component |
| CN107974633A (en) * | 2017-11-01 | 2018-05-01 | 南通欧科数控设备有限公司 | A kind of drill bit alloy steel material and preparation method thereof |
| CN112958222A (en) * | 2020-11-26 | 2021-06-15 | 衡阳鸿宇机械制造有限公司 | Wear-resistant hammer head applied to metallurgical mine machining and machining method |
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| JPH11343543A (en) * | 1998-03-30 | 1999-12-14 | Kobe Steel Ltd | High toughness super-abrasion resistant cast steel and its production |
| WO2000043555A1 (en) * | 1999-01-19 | 2000-07-27 | Magotteaux International S.A. | Process of the production of high-carbon cast steels intended for wearing parts |
| CN102021484A (en) * | 2010-12-15 | 2011-04-20 | 中国铝业股份有限公司 | Material for aluminum electrolysis crust-breaking hammer |
| CN102031457A (en) * | 2010-12-23 | 2011-04-27 | 龙南龙钇重稀土科技股份有限公司 | Yttrium-containing low-alloy steel plate hammer |
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2013
- 2013-11-11 CN CN201310555850.3A patent/CN103628000A/en active Pending
Patent Citations (4)
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| JPH11343543A (en) * | 1998-03-30 | 1999-12-14 | Kobe Steel Ltd | High toughness super-abrasion resistant cast steel and its production |
| WO2000043555A1 (en) * | 1999-01-19 | 2000-07-27 | Magotteaux International S.A. | Process of the production of high-carbon cast steels intended for wearing parts |
| CN102021484A (en) * | 2010-12-15 | 2011-04-20 | 中国铝业股份有限公司 | Material for aluminum electrolysis crust-breaking hammer |
| CN102031457A (en) * | 2010-12-23 | 2011-04-27 | 龙南龙钇重稀土科技股份有限公司 | Yttrium-containing low-alloy steel plate hammer |
Non-Patent Citations (1)
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| 饶启昌 等: "耐磨材料热处理问题的探讨", 《水利电力机械》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107217208A (en) * | 2017-05-27 | 2017-09-29 | 太仓明仕金属制造有限公司 | A kind of multi-functional sheet metal component |
| CN107974633A (en) * | 2017-11-01 | 2018-05-01 | 南通欧科数控设备有限公司 | A kind of drill bit alloy steel material and preparation method thereof |
| CN112958222A (en) * | 2020-11-26 | 2021-06-15 | 衡阳鸿宇机械制造有限公司 | Wear-resistant hammer head applied to metallurgical mine machining and machining method |
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Application publication date: 20140312 |