CN103627981A - Alloy material for crusher hammerhead and preparation method thereof - Google Patents
Alloy material for crusher hammerhead and preparation method thereof Download PDFInfo
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- CN103627981A CN103627981A CN201310555115.2A CN201310555115A CN103627981A CN 103627981 A CN103627981 A CN 103627981A CN 201310555115 A CN201310555115 A CN 201310555115A CN 103627981 A CN103627981 A CN 103627981A
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Abstract
The invention relates to an alloy material for a crusher hammerhead, which contains the following chemical elements in percentage by mass: 0.2-0.4% of carbon, 0.7-0.9% of silicon, 3.2-3.5% of manganese, 3.6-3.8% of chromium, 1.7-1.9% of molybdenum, 0.2-0.5% of titanium, 0.02-0.04% of Sb, 0.01-0.02% of Lu, 0.02-0.03% of Ga, at most 0.05% of S, at most 0.05% of P and the balance of iron. By using the low-carbon steel as the main material, the material has favorable toughness; the material contains the Sb, Lu, Ga and many other alloy elements, so that the alloy has high hardness, high wear resistance and high hot strength; and the material is suitable for a medium-size crusher and used for crushing ores with moderate hardness, the service life can be prolonged by 1 time or so as compared with high-chromium cast iron, and the cost is lower. When the refining agent is used for casting production, no pores can be generated on the casting surface, and the included oxide content is obviously lowered.
Description
Technical field
The present invention relates to wear-resistant metal material field, relate in particular to alloy material and preparation method thereof for a kind of grinder hammerhead.
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 material and preparation method thereof for a kind of grinder hammerhead, this alloy material has higher hardness, and wear resistance is good, the advantage of good toughness.
Technical scheme of the present invention is as follows:
A grinder hammerhead alloy material, is characterized in that: chemical element composition and mass percent thereof that it contains are: carbon 0.2-0.4, silicon 0.7-0.9, manganese 3.2-3.5, chromium 3.6-3.8, molybdenum 1.7-1.9, titanium 0.2-0.5, Sb0.02-0.04, Lu0.01-0.02, Ga0.02-0.03, S≤0.05, P≤0.05, surplus are iron.
The production method of alloy material for described grinder hammerhead, 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) chromium, manganese; (2) silicon, molybdenum, titanium, Ga; (3) other remaining components; The timed interval that each batch drops into element is 24-27 minute, after feeding intake, stirs.
Described casting postheat treatment is: first by room temperature, with 180-190 ℃/h of speed, be warming up to 470-490 ℃, insulation 50-60 minute, with 180-190 ℃/h of speed, be warming up to 650-660 ℃ again, insulation 40-50 minute, with 220-230 ℃/h of speed, be warming up to 920-935 ℃ again, insulation 3-4 hour; With 160-170 ℃/h of speed, be cooled to 520-530 ℃ again, insulation 40-50 minute, then with 160-170 ℃/h of speed, be cooled to 220-230 ℃, 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 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 adopts soft steel as material, has good toughness; Contain the multiple alloying elements such as Sb, Lu, Ga simultaneously, make alloy have high hardness and wear resistance, heat is strong high; The present invention is applicable to medium-sized crusher, and for the moderate ore reduction of hardness, extend 1 left and right with rich chromium cast iron phase specific energy its work-ing life, and cost is lower.The present invention uses part scrap iron as raw material, and through secondary refining, throwing raw materials, rationally controls casting postheat treatment temperature in batches, makes more stable uniform of alloy quality, 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 grinder hammerhead alloy material, chemical element composition and mass percent thereof that it contains are: carbon 0.2-0.4, silicon 0.7-0.9, manganese 3.2-3.5, chromium 3.6-3.8, molybdenum 1.7-1.9, titanium 0.2-0.5, Sb0.02-0.04, Lu0.01-0.02, Ga0.02-0.03, S≤0.05, P≤0.05, surplus are iron.
Described grinder hammerhead by the production method of alloy material is:
(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) chromium, manganese; (2) silicon, molybdenum, titanium, Ga; (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 480 ℃, be incubated 55 minutes, then be warming up to 655 ℃ with 185 ℃/h of speed, be incubated 45 minutes, then be warming up to 926 ℃ with 225 ℃/h of speed, be incubated 3.5 hours; With 165 ℃/h of speed, be cooled to 525 ℃ again, be incubated 45 minutes, then be cooled to 225 ℃ with 165 ℃/h of speed, 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 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.
Grinder hammerhead of the present invention by the mechanical property of alloy material is: tensile strength 1367MPa, yield strength 898MPa, unit elongation 15%, relative reduction in area 32%, impact absorbing energy 54J, impelling strength 64J/cm2, hardness 280HB.
Claims (4)
1. a grinder hammerhead alloy material, is characterized in that: chemical element composition and mass percent thereof that it contains are: carbon 0.2-0.4, silicon 0.7-0.9, manganese 3.2-3.5, chromium 3.6-3.8, molybdenum 1.7-1.9, titanium 0.2-0.5, Sb0.02-0.04, Lu0.01-0.02, Ga0.02-0.03, S≤0.05, P≤0.05, surplus are iron.
2. the production method of alloy material for grinder hammerhead 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) chromium, manganese; (2) silicon, molybdenum, titanium, Ga; (3) other remaining components; The timed interval that each batch drops into element is 24-27 minute, after feeding intake, stirs.
3. the production method of alloy material for grinder hammerhead 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 470-490 ℃, insulation 50-60 minute, with 180-190 ℃/h of speed, be warming up to 650-660 ℃ again, insulation 40-50 minute, with 220-230 ℃/h of speed, be warming up to 920-935 ℃ again, insulation 3-4 hour; With 160-170 ℃/h of speed, be cooled to 520-530 ℃ again, insulation 40-50 minute, then with 160-170 ℃/h of speed, be cooled to 220-230 ℃, 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 alloy material for grinder hammerhead 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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| CN201310555115.2A CN103627981A (en) | 2013-11-11 | 2013-11-11 | Alloy material for crusher hammerhead and preparation method thereof |
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| CN201310555115.2A CN103627981A (en) | 2013-11-11 | 2013-11-11 | Alloy material for crusher hammerhead and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103993217A (en) * | 2014-04-23 | 2014-08-20 | 中建材宁国新马耐磨材料有限公司 | Large crusher hammerhead and making method thereof |
| CN113549829A (en) * | 2021-07-13 | 2021-10-26 | 山西滨腾机械有限公司 | Dry coke quenching tank lining plate and preparation method and application thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 CN201310555115.2A patent/CN103627981A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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》, 28 February 2000 (2000-02-28), pages 16 - 17 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103993217A (en) * | 2014-04-23 | 2014-08-20 | 中建材宁国新马耐磨材料有限公司 | Large crusher hammerhead and making method thereof |
| CN103993217B (en) * | 2014-04-23 | 2016-05-18 | 中建材宁国新马耐磨材料有限公司 | The preparation method of Large Crusher tup |
| CN113549829A (en) * | 2021-07-13 | 2021-10-26 | 山西滨腾机械有限公司 | Dry coke quenching tank lining plate and preparation method and application thereof |
| CN113549829B (en) * | 2021-07-13 | 2022-12-20 | 山西滨腾机械有限公司 | Dry coke quenching tank lining plate and preparation method and application thereof |
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Application publication date: 20140312 |