CN103627993A - Alloy steel hammerhead material for small-size crusher and preparation method thereof - Google Patents
Alloy steel hammerhead material for small-size crusher and preparation method thereof Download PDFInfo
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Abstract
The invention relates to an alloy steel hammerhead material for a small-size crusher, which contains the following chemical elements in percentage by mass: 0.2-0.4% of carbon, 0.8-1.0% of silicon, 2.1-2.3% of manganese, 5.2-5.5% of chromium, 0.8-1.1% of molybdenum, 0.2-0.3% of vanadium, 2.6-2.8% of titanium, 0.15-0.25% of V, 0.08-0.12% of Te, 0.5-0.7% of Zr, at most 0.05% of S, at most 0.05% of P and the balance of iron. By using medium-manganese low-carbon steel as the main material, the material has favorable toughness; the material contains the Zr, V, chromium, molybdenum and many other alloy elements, and thus, has the characteristics of higher strength, excellent high temperature resistance and excellent corrosion resistance; and the material is suitable for small-size working conditions with non-severe impact, and the service life is 2-3 times longer than that of common low alloy steel. When the refining agent is used for casting production, the porosity in the casting is lowered by 1-2 degrees, and the oxide inclusions are lowered by 2 levels or so.
Description
Technical field
The present invention relates to wear-resistant metal material field, relate in particular to steel alloy hammer head material and preparation method thereof for a kind of micromill.
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 steel alloy hammer head material and preparation method thereof for a kind of micromill, this alloy material has that wear resistance is good, good toughness, corrosion resistant advantage.
Technical scheme of the present invention is as follows:
A micromill steel alloy hammer head material, is characterized in that: chemical element composition and mass percent thereof that it contains are: carbon 0.2-0.4, silicon 0.8-1.0, manganese 2.1-2.3, chromium 5.2-5.5, molybdenum 0.8-1.1, vanadium 0.2-0.3, titanium 2.6-2.8, V0.15-0.25, Te0.08-0.12, Zr0.5-0.7, S≤0.05, P≤0.05, surplus are iron.
The production method of steel alloy hammer head material for described micromill, 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, vanadium, Te; (2) manganese, molybdenum, Zr(3) other remaining components; The timed interval that each batch drops into element is 23-26 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 160-170 ℃/h of speed, be cooled to 400-410 ℃ again, with 180-190 ℃/h of speed, be warming up to 700-710 ℃ again, insulation 50-60 minute, 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 600-610 ℃ 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 540-550 ℃ 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 3-4, clay 20-24, alum 5-6, iron ore ground-slag 1-2, silicon carbide 4-5, aluminium hydroxide 8-10, jade powder 3-4, montmorillonite 1-2, Repone K 2-3, Calcium Fluoride (Fluorspan) 4-5; 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, manganese soft steel, as material, has good toughness; Meanwhile, again because it contains Zr, V, chromium, the multiple alloying element of molybdenum, there is higher intensity and excellent high temperature resistant, corrosion resistant characteristic; The present invention is applicable to the small-sized working conditions of non-intense impact, and improve 2-3 doubly than ordinary low-alloy steel its work-ing 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 micromill steel alloy hammer head material, chemical element composition and mass percent thereof that it contains are: carbon 0.2-0.4, silicon 0.8-1.0, manganese 2.1-2.3, chromium 5.2-5.5, molybdenum 0.8-1.1, vanadium 0.2-0.3, titanium 2.6-2.8, V0.15-0.25, Te0.08-0.12, Zr0.5-0.7, S≤0.05, P≤0.05, surplus are iron.
Described micromill is as follows by the production method of steel alloy hammer head material:
(1), preparing the pig iron and scrap iron originates as ferrous substrate in 1:1.5 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, vanadium, Te; (2) manganese, molybdenum, Zr(3) other remaining components; The timed interval that each batch drops into element is 25 minutes, after feeding intake, stirs.
Described casting postheat treatment is: first by room temperature, with 185 ℃/h of speed, be warming up to 505 ℃, be incubated 65 minutes, with 165 ℃/h of speed, be cooled to 405 ℃ again, with 185 ℃/h of speed, be warming up to 705 ℃ again, be incubated 55 minutes, with 215 ℃/h of speed, be warming up to 945 ℃ again, be incubated 3.5 hours; With 165 ℃/h of speed, be cooled to 605 ℃ 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 545 ℃ 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 3.5, clay 23, alum 5.5, iron ore ground-slag 1.5, silicon carbide 4.5, aluminium hydroxide 9, jade powder 3.5, montmorillonite 1.5, Repone K 2.5, Calcium Fluoride (Fluorspan) 4.5; 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 2.5%, 1.5% nano-carbon powder, after mixing, under 13Mpa, be pressed into base, then, at 920 ℃, calcine 3.5 hours, cooling after, then be ground into 210 order powder, obtain.
Micromill of the present invention by the mechanical property of steel alloy hammer head material is: tensile strength 1021MPa, yield strength 867MPa, unit elongation 13.2%, relative reduction in area 24.5%, impact absorbing energy 49.5J, impelling strength 61.2J/cm2, hardness 281HB.
Claims (4)
1. a micromill steel alloy hammer head material, is characterized in that: chemical element composition and mass percent thereof that it contains are: carbon 0.2-0.4, silicon 0.8-1.0, manganese 2.1-2.3, chromium 5.2-5.5, molybdenum 0.8-1.1, vanadium 0.2-0.3, titanium 2.6-2.8, V0.15-0.25, Te0.08-0.12, Zr0.5-0.7, S≤0.05, P≤0.05, surplus are iron.
2. the production method of steel alloy hammer head material for micromill according to claim 1, 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, vanadium, Te; (2) manganese, molybdenum, Zr(3) other remaining components; The timed interval that each batch drops into element is 23-26 minute, after feeding intake, stirs.
3. the production method of steel alloy hammer head material for micromill according to claim 2, 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 160-170 ℃/h of speed, be cooled to 400-410 ℃ again, with 180-190 ℃/h of speed, be warming up to 700-710 ℃ again, insulation 50-60 minute, then with 210-220 ℃/h of speed, be warming up to 940-950 ℃, insulation 3-4 hour; With 160-170 ℃/h of speed, be cooled to 600-610 ℃ 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 540-550 ℃ with 180-190 ℃/h of speed, insulation 2-3 hour, takes out air cooling and get final product.
4. the production method of steel alloy hammer head material for micromill according to claim 2, is characterized in that: described refining agent is made by the raw material of following weight part: instrument comminuted steel shot 3-4, clay 20-24, alum 5-6, iron ore ground-slag 1-2, silicon carbide 4-5, aluminium hydroxide 8-10, jade powder 3-4, montmorillonite 1-2, Repone K 2-3, Calcium Fluoride (Fluorspan) 4-5; 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 (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103834859A (en) * | 2014-03-13 | 2014-06-04 | 安徽聚力机械制造有限公司 | High hardness high plasticity low-carbon steel material and preparation method thereof |
| CN105838982A (en) * | 2016-05-23 | 2016-08-10 | 安徽鑫宏机械有限公司 | Rare-earth oxide cast-infiltrated crusher wear-resistant hammer for complex ores and production method thereof |
| CN106011673A (en) * | 2016-05-23 | 2016-10-12 | 安徽鑫宏机械有限公司 | Titanium dioxide nanotube modified cast-infiltration composite wear-resisting hammerhead of mining crushing machine and production method thereof |
| CN106011613A (en) * | 2016-05-23 | 2016-10-12 | 安徽鑫宏机械有限公司 | Nanocrystalline barium titanate modified cast-infiltration composite wear-resisting hammerhead of mine-used crushing machine and production method thereof |
| CN106011674A (en) * | 2016-05-23 | 2016-10-12 | 安徽鑫宏机械有限公司 | Wear resisting hammerhead of high-strength crack-resistant casting and seepage compounded mining crusher and production method thereof |
| CN106048457A (en) * | 2016-05-23 | 2016-10-26 | 安徽鑫宏机械有限公司 | High-hardness corrosion-resistant abrasion-resistant crusher hammer head for casting infiltration compound ore and production method of crusher hammer head |
| CN107502832A (en) * | 2017-07-25 | 2017-12-22 | 北京科技大学 | A kind of double quenching partition process for high speed tup abrasion-resistant stee steel and preparation method thereof |
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| 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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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103834859A (en) * | 2014-03-13 | 2014-06-04 | 安徽聚力机械制造有限公司 | High hardness high plasticity low-carbon steel material and preparation method thereof |
| CN103834859B (en) * | 2014-03-13 | 2016-08-24 | 安徽聚力机械制造有限公司 | A kind of high rigidity high-plasticity low-carbon Steel material and preparation method thereof |
| CN105838982A (en) * | 2016-05-23 | 2016-08-10 | 安徽鑫宏机械有限公司 | Rare-earth oxide cast-infiltrated crusher wear-resistant hammer for complex ores and production method thereof |
| CN106011673A (en) * | 2016-05-23 | 2016-10-12 | 安徽鑫宏机械有限公司 | Titanium dioxide nanotube modified cast-infiltration composite wear-resisting hammerhead of mining crushing machine and production method thereof |
| CN106011613A (en) * | 2016-05-23 | 2016-10-12 | 安徽鑫宏机械有限公司 | Nanocrystalline barium titanate modified cast-infiltration composite wear-resisting hammerhead of mine-used crushing machine and production method thereof |
| CN106011674A (en) * | 2016-05-23 | 2016-10-12 | 安徽鑫宏机械有限公司 | Wear resisting hammerhead of high-strength crack-resistant casting and seepage compounded mining crusher and production method thereof |
| CN106048457A (en) * | 2016-05-23 | 2016-10-26 | 安徽鑫宏机械有限公司 | High-hardness corrosion-resistant abrasion-resistant crusher hammer head for casting infiltration compound ore and production method of crusher hammer head |
| CN107502832A (en) * | 2017-07-25 | 2017-12-22 | 北京科技大学 | A kind of double quenching partition process for high speed tup abrasion-resistant stee steel and preparation method thereof |
| CN107502832B (en) * | 2017-07-25 | 2019-03-15 | 北京科技大学 | A kind of double quenching partition process for high speed tup abrasion-resistant stee steel and preparation method thereof |
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