CN103643162A - Alloy steel material for hammerhead of pendulum for mine and preparation method thereof - Google Patents
Alloy steel material for hammerhead of pendulum for mine and preparation method thereof Download PDFInfo
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- CN103643162A CN103643162A CN201310555433.9A CN201310555433A CN103643162A CN 103643162 A CN103643162 A CN 103643162A CN 201310555433 A CN201310555433 A CN 201310555433A CN 103643162 A CN103643162 A CN 103643162A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
An alloy steel material for hammerheads of pendulums for mine comprises the following chemical element components by mass percent: 1.6-1.8% of carbon, 2.0-2.3% of silicon, 7.2-7.5% of chromium, 3.2-3.4% of manganese, 0.6-0.9% of molybdenum, 1.3-1.5% of nickel, 0.06-0.09% of copper, 0.05-0.08% of Pr, 0.1-0.14% of Ta, not more than 0.05% of S, not more than 0.05% of P, and the balance of iron. The alloy steel material of the invention adopts high-carbon steel as a material, is added with elements of chromium, molybdenum, Pr, and the like, and has high hardness, wear resistance, impact resistance, and good toughness; the alloy steel material of the invention is used for hammerhead parts of pendulums and has a long service life. The method of the invention partly adopts scrap iron as a raw material; secondary refining is performed; heat treatment temperature after casting is controlled reasonably; raw materials are fed in batches; and thus the alloy quality is more stable and consistent. The method of the invention adopts a refining agent in the casting production, which does not generate pores on casting surfaces, and significantly reduces oxide inclusions.
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 pendulum tup for a kind of 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 pendulum tup for a kind of mine, it is higher that this alloy material has intensity, and wear resistance is good, the good advantage of toughness.
Technical scheme of the present invention is as follows:
A pendulum tup alloy steel material for mine, is characterized in that: chemical element composition and mass percent thereof that it contains are: carbon 1.6-1.8, silicon 2.0-2.3, chromium 7.2-7.5, manganese 3.2-3.4, molybdenum 0.6-0.9, nickel 1.3-1.5, copper 0.06-0.09, Pr0.05-0.08, Ta0.1-0.14, S≤0.05, P≤0.05, surplus are iron.
Described mine is the production method with alloy steel material with pendulum tup, it is characterized in that:
(1), preparing the pig iron and scrap iron originates as ferrous substrate in 1:0.5-1.5 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, nickel, chromium; (2) manganese, copper, Ta; (3) other remaining components; The timed interval that each batch drops into element is 18-22 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 40-50 minute, with 180-190 ℃/h of speed, be warming up to 700-710 ℃ again, with 160-170 ℃/h of speed, be cooled to 600-610 ℃ again, with 180-190 ℃/h of speed, be warming up to 920-930 ℃ again, insulation 3-4 hour; With 180-190 ℃/h of speed, be cooled to 550-560 ℃ 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 210-220 ℃ again, insulation 2-3 hour; With 180-190 ℃/h of speed, be warming up to 340-350 ℃ again, insulation 30-40 minute, 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 adopts high carbon steel as material, adds the elements such as chromium, molybdenum, Pr, makes steel alloy have high hardness and wear resistance, shock-resistant, simultaneously good toughness; The present invention is for the tup part of pendulum, 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 pendulum tup alloy steel material for mine, chemical element composition and mass percent thereof that it contains are: carbon 1.6-1.8, silicon 2.0-2.3, chromium 7.2-7.5, manganese 3.2-3.4, molybdenum 0.6-0.9, nickel 1.3-1.5, copper 0.06-0.09, Pr0.05-0.08, Ta0.1-0.14, S≤0.05, P≤0.05, surplus are iron.
Described mine with pendulum tup by the production method of alloy steel material is:
(1), preparing the pig iron and scrap iron originates as ferrous substrate in 1:1 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, nickel, chromium; (2) manganese, copper, Ta; (3) other remaining components; The timed interval that each batch drops into element is 20 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 45 minutes, then be warming up to 705 ℃ with 185 ℃/h of speed, then be cooled to 605 ℃ with 165 ℃/h of speed, with 185 ℃/h of speed, be warming up to 925 ℃ again, be incubated 3.5 hours; With 185 ℃/h of speed, be cooled to 555 ℃ 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 215 ℃ again, be incubated 2.5 hours; With 185 ℃/h of speed, be warming up to 345 ℃ again, be incubated 35 minutes, 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.
Mine of the present invention with pendulum tup by the mechanical property of alloy steel material is: tensile strength 968MPa, yield strength 836MPa, unit elongation 14%, relative reduction in area 31%, impact absorbing energy 54J, impelling strength 64J/cm2, hardness 279HB.
Claims (4)
1. a pendulum tup alloy steel material for mine, is characterized in that: chemical element composition and mass percent thereof that it contains are: carbon 1.6-1.8, silicon 2.0-2.3, chromium 7.2-7.5, manganese 3.2-3.4, molybdenum 0.6-0.9, nickel 1.3-1.5, copper 0.06-0.09, Pr0.05-0.08, Ta0.1-0.14, S≤0.05, P≤0.05, surplus are iron.
2. the production method of alloy steel material is used in mine according to claim 1 with pendulum tup, it is characterized in that:
(1), preparing the pig iron and scrap iron originates as ferrous substrate in 1:0.5-1.5 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, nickel, chromium; (2) manganese, copper, Ta; (3) other remaining components; The timed interval that each batch drops into element is 18-22 minute, after feeding intake, stirs.
3. the production method of alloy steel material is used in mine according to claim 2 with pendulum tup, 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 40-50 minute, with 180-190 ℃/h of speed, be warming up to 700-710 ℃ again, with 160-170 ℃/h of speed, be cooled to 600-610 ℃ again, with 180-190 ℃/h of speed, be warming up to 920-930 ℃ again, insulation 3-4 hour; With 180-190 ℃/h of speed, be cooled to 550-560 ℃ 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 210-220 ℃ again, insulation 2-3 hour; With 180-190 ℃/h of speed, be warming up to 340-350 ℃ again, insulation 30-40 minute, 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 alloy steel material is used in mine according to claim 2 with pendulum tup, it 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310555433.9A CN103643162A (en) | 2013-11-11 | 2013-11-11 | Alloy steel material for hammerhead of pendulum for mine and preparation method thereof |
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| CN201310555433.9A CN103643162A (en) | 2013-11-11 | 2013-11-11 | Alloy steel material for hammerhead of pendulum for mine and preparation method thereof |
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| CN103643162A true CN103643162A (en) | 2014-03-19 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2013
- 2013-11-11 CN CN201310555433.9A patent/CN103643162A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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)
| Title |
|---|
| 饶启昌 等: "耐磨材料热处理问题的探讨", 《水利电力机械》, 29 February 2000 (2000-02-29), pages 12 - 17 * |
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Application publication date: 20140319 |