CN103627987A - Magnetic corrosion-resistant alloy steel material for hammerheads and preparation method thereof - Google Patents
Magnetic corrosion-resistant alloy steel material for hammerheads and preparation method thereof Download PDFInfo
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- CN103627987A CN103627987A CN201310555294.XA CN201310555294A CN103627987A CN 103627987 A CN103627987 A CN 103627987A CN 201310555294 A CN201310555294 A CN 201310555294A CN 103627987 A CN103627987 A CN 103627987A
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Abstract
The invention relates to a magnetic corrosion-resistant alloy steel material for hammerheads, which contains the following chemical elements in percentage by mass: 2.2-2.5% of carbon, 1.0-1.3% of silicon, 13.2-14.5% of chromium, 2.8-3.1% of manganese, 0.7-0.9% of molybdenum, 1.4-1.7% of cobalt, 0.02-0.05% of Dy, at most 0.05% of S, at most 0.05% of P and the balance of iron. The chromium, Dy, cobalt and many other alloy elements are added on the basis of high-carbon steel, matched with part of scrap iron used as a raw material and are subjected to secondary refining; the raw materials are added in different batches, and the post-casting heat treatment temperature is reasonably controlled, so that the alloy has the characteristics of high hardness, high wear resistance, corrosion resistance, stable and uniform quality, certain impact toughness and low rupture tendency, and is magnetic; and the alloy steel material is suitable for crushing objects with high hardness, and can remove iron and other impurities by purification. When the refining agent is used for casting production, the yield is obviously enhanced.
Description
Technical field
The present invention relates to wear-resistant metal material field, relate in particular to the corrosion-resistant tup of a kind of magnetic alloy steel material and preparation method thereof.
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 the corrosion-resistant tup of a kind of magnetic, it is high that this alloy material has intensity, and wear resistance is good, be magnetic, corrosion resistant advantage.
Technical scheme of the present invention is as follows:
The corrosion-resistant tup alloy steel material of magnetic, is characterized in that: chemical element composition and mass percent thereof that it contains are: carbon 2.2-2.5, silicon 1.0-1.3, chromium 13.2-14.5, manganese 2.8-3.1, molybdenum 0.7-0.9, cobalt 1.4-1.7, Dy0.02-0.05, S≤0.05, P≤0.05, surplus are iron.
The production method of alloy steel material for the corrosion-resistant tup of described magnetic, is characterized in that:
(1), preparing the pig iron and scrap iron originates as ferrous substrate in 1:0.6-1.5 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, manganese; (2) molybdenum, cobalt; (3) other remaining components; The timed interval that each batch drops into element is 19-22 minute, after feeding intake, stirs.
Described casting postheat treatment is: first by room temperature, with 210-220 ℃/h of speed, be warming up to 500-510 ℃, insulation 60-70 minute, with 210-220 ℃/h of speed, be warming up to 700-710 ℃ again, with 180-190 ℃/h of speed, be cooled to 600-610 ℃ again, with 210-220 ℃/h of speed, be warming up to 930-940 ℃ again, insulation 3-4 hour; With 180-190 ℃/h of speed, be cooled to 600-610 ℃ again, then be warming up to 700-710 ℃ with 210-220 ℃/h of speed, then be cooled to 500-510 ℃ with 180-190 ℃/h of speed, insulation 50-60 minute; With 180-190 ℃/h of speed, be cooled to 200-210 ℃ again, insulation 2-3 hour; With 210-220 ℃/h of speed, be warming up to 340-350 ℃ again, insulation 40-50 minute, then be warming up to 530-540 ℃ with 210-220 ℃/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 12-15, nano titanium oxide 3-4, silicon-dioxide 2-3, BaCO
34-5, nano silicon 1-2, aluminium hydroxide 8-10, jade powder 3-4, montmorillonite 1-2, Sodium Silicofluoride 2-3; 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 adds the multiple alloying elements such as chromium, Dy, cobalt on the basis of high carbon steel, be used in conjunction with part scrap iron as raw material, and through secondary refining, throwing raw materials in batches, rationally control casting postheat treatment temperature, make alloy there is high hardness and wear resistance, in addition the feature of corrosion-resistant, carrying magnetic, stay in grade homogeneous, there is certain tough, not easy fracture; The present invention is applicable to the object that broken hardness is high, and improve 1-2 doubly with traditional rich chromium cast iron phase specific energy its work-ing life, and the impurity such as removing iron of can purifying.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
The corrosion-resistant tup alloy steel material of magnetic, chemical element composition and mass percent thereof that it contains are: carbon 2.2-2.5, silicon 1.0-1.3, chromium 13.2-14.5, manganese 2.8-3.1, molybdenum 0.7-0.9, cobalt 1.4-1.7, Dy0.02-0.05, S≤0.05, P≤0.05, surplus are iron.
The corrosion-resistant tup of described magnetic 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, manganese; (2) molybdenum, cobalt; (3) other remaining components; The timed interval that each batch drops into element is 21 minutes, after feeding intake, stirs.
Described casting postheat treatment is: first by room temperature, with 215 ℃/h of speed, be warming up to 505 ℃, be incubated 65 minutes, then be warming up to 705 ℃ with 215 ℃/h of speed, then be cooled to 605 ℃ with 185 ℃/h of speed, with 215 ℃/h of speed, be warming up to 935 ℃ again, be incubated 3.5 hours; With 185 ℃/h of speed, be cooled to 605 ℃ again, then be warming up to 705 ℃ with 215 ℃/h of speed, then be cooled to 505 ℃ with 185 ℃/h of speed, be incubated 55 minutes; With 185 ℃/h of speed, be cooled to 205 ℃ again, be incubated 2.5 hours; With 215 ℃/h of speed, be warming up to 345 ℃ again, be incubated 45 minutes, then be warming up to 535 ℃ with 215 ℃/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 13, nano titanium oxide 3.5, silicon-dioxide 2.5, BaCO
34.5, nano silicon 1.5, aluminium hydroxide 9, jade powder 3.5, montmorillonite 1.5, Sodium Silicofluoride 2.5; Preparation method mixes each raw material, is heated to molten state, then, is poured into Quench in pure water, then is ground into 170 order powder; Gained powder is added and is equivalent to the silane resin acceptor kh-550 of powder weight 2.5%, 2% nano-carbon powder, after mixing, under 11Mpa, be pressed into base, then, at 940 ℃, calcine 3.4 hours, cooling after, then be ground into 200 order powder, obtain.
The corrosion-resistant tup of magnetic of the present invention by the mechanical property of alloy steel material is: tensile strength 1279MPa, yield strength 969MPa, unit elongation 13%, relative reduction in area 23%, impact absorbing energy 50.7J, impelling strength 59.5J/cm2, hardness 289HB.
Claims (4)
1. the corrosion-resistant tup alloy steel material of magnetic, is characterized in that: chemical element composition and mass percent thereof that it contains are: carbon 2.2-2.5, silicon 1.0-1.3, chromium 13.2-14.5, manganese 2.8-3.1, molybdenum 0.7-0.9, cobalt 1.4-1.7, Dy0.02-0.05, S≤0.05, P≤0.05, surplus are iron.
2. the production method of alloy steel material for the corrosion-resistant tup of magnetic according to claim 1, is characterized in that:
(1), preparing the pig iron and scrap iron originates as ferrous substrate in 1:0.6-1.5 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, manganese; (2) molybdenum, cobalt; (3) other remaining components; The timed interval that each batch drops into element is 19-22 minute, after feeding intake, stirs.
3. the production method of alloy steel material for the corrosion-resistant tup of magnetic according to claim 2, it is characterized in that: described casting postheat treatment is: first by room temperature, with 210-220 ℃/h of speed, be warming up to 500-510 ℃, insulation 60-70 minute, with 210-220 ℃/h of speed, be warming up to 700-710 ℃ again, with 180-190 ℃/h of speed, be cooled to 600-610 ℃ again, with 210-220 ℃/h of speed, be warming up to 930-940 ℃ again, insulation 3-4 hour; With 180-190 ℃/h of speed, be cooled to 600-610 ℃ again, then be warming up to 700-710 ℃ with 210-220 ℃/h of speed, then be cooled to 500-510 ℃ with 180-190 ℃/h of speed, insulation 50-60 minute; With 180-190 ℃/h of speed, be cooled to 200-210 ℃ again, insulation 2-3 hour; With 210-220 ℃/h of speed, be warming up to 340-350 ℃ again, insulation 40-50 minute, then be warming up to 530-540 ℃ with 210-220 ℃/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 corrosion-resistant tup of magnetic 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 12-15, nano titanium oxide 3-4, silicon-dioxide 2-3, BaCO
34-5, nano silicon 1-2, aluminium hydroxide 8-10, jade powder 3-4, montmorillonite 1-2, Sodium Silicofluoride 2-3; 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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| CN201310555294.XA CN103627987A (en) | 2013-11-11 | 2013-11-11 | Magnetic corrosion-resistant alloy steel material for hammerheads and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103981464A (en) * | 2014-05-07 | 2014-08-13 | 中建材宁国新马耐磨材料有限公司 | Compound hammerhead |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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- 2013-11-11 CN CN201310555294.XA patent/CN103627987A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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》, 28 February 2000 (2000-02-28), pages 16 - 17 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103981464A (en) * | 2014-05-07 | 2014-08-13 | 中建材宁国新马耐磨材料有限公司 | Compound hammerhead |
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Application publication date: 20140312 |