CN103602911A - High-temperature resistant and wear-resistant alloy steel lining plate material and preparation method thereof - Google Patents
High-temperature resistant and wear-resistant alloy steel lining plate material and preparation method thereof Download PDFInfo
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- CN103602911A CN103602911A CN201310583162.8A CN201310583162A CN103602911A CN 103602911 A CN103602911 A CN 103602911A CN 201310583162 A CN201310583162 A CN 201310583162A CN 103602911 A CN103602911 A CN 103602911A
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Abstract
The invention discloses a high-temperature resistant and wear-resistant alloy steel lining plate material which comprises the following chemical elements in percentage by mass: 0.2-0.4% of carbon, 0.2-0.4% of silicon, 3.5-3.7% of manganese, 0.7-0.9% of chromium, 0.8-1.1% of molybdenum, 1.2-1.4% of vanadium, 0.1-0.15% of lanthanum, 0.04-0.07% of Nb, less than or equal to 0.04% of S, less than or equal to 0.04% of P and the balance of iron. In the lining plate provided by the invention, the alloy steel obtained by adding the elements such as lanthanum, molybdenum and niobium into low-carbon steel has the advantages of high hardness, high strength, good wear resistance, high-temperature resistance, good toughness, good plasticity, corrosion resistance and high cost performance. In the lining plate material disclosed by the invention, the waste iron is partially used as the raw material, secondary refining is performed, the thermal treatment temperature after casting is reasonably controlled, the raw material is fed in batches, and the comprehensive mechanical properties are improved. A refining agent is applied to the casting production; and in a casting, the porosity is reduced by 1-2 degrees, and the oxide inclusion is at about level 2.
Description
Technical field
The present invention relates to metal material field, relate in particular to a kind of heat resistant and wear resistant steel alloy lining material and preparation method thereof.
Background technology
Lining material is through the development of more than 30 years, experienced high violent steel, common spoken parts in traditional operas cast steel, ni-hard cast iron, high chromium white iron to the developmental stage of the middle-low alloy steel of modified high manganese steel and various Q-tempering techniques.In at present domestic practical application, be still that high mangaenese steel rules all the land, in several main flow materials, high mangaenese steel good toughness, but wear resistance and erosion resistance are also undesirable; Wear resistance of high-chromium iron is good, but toughness is poor again; Middle-low alloy steel fragility and erosion resistance are not up to standard.Need to enhance productivity, reduce wear from more excellent lining materials of aspect research and development over-all properties such as starting material, techniques, reduce costs.
Summary of the invention
The object of the present invention is to provide a kind of heat resistant and wear resistant steel alloy lining material and preparation method thereof, it is high that this alloy material has intensity, and wear resistance is good, high temperature resistant, the advantage of good toughness.
Technical scheme of the present invention is as follows:
A heat resistant and wear resistant steel alloy lining material, is characterized in that: chemical element composition and mass percent thereof that it contains are: carbon 0.2-0.4, silicon 0.2-0.4, manganese 3.5-3.7, chromium 0.7-0.9, molybdenum 0.8-1.1, vanadium 1.2-1.4, lanthanum 0.1-0.15, Nb0.04-0.07, S≤0.04, P≤0.04, surplus are iron.
The production method of described heat resistant and wear resistant steel alloy lining material, 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, vanadium; (2) silicon, manganese, lanthanum; (3) other remaining components; The timed interval that each batch drops into element is 23-25 minute, after feeding intake, stirs.
Described casting postheat treatment is: first by room temperature, with 200-220 ℃/h of speed, be warming up to 500-510 ℃, insulation 60-70 minute, with 200-220 ℃/h of speed, be warming up to 700-710 ℃ again, with 190-200 ℃/h of speed, be cooled to 600-610 ℃ again, with 220-230 ℃/h of speed, be warming up to 940-950 ℃ again, insulation 3-4 hour; With 180-190 ℃/h of speed, be cooled to 600-610 ℃ again, insulation 50-60 minute, then with 180-190 ℃/h of speed, be cooled to 490-500 ℃, insulation 70-80 minute; With 170-180 ℃/h of speed, be cooled to 220-230 ℃ again, insulation 2-3 hour; With 200-220 ℃/h of speed, be warming up to 330-350 ℃ again, then be cooled to 200-210 ℃ with 160-170 ℃/h of speed, then be warming up to 530-550 ℃ 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 30-40, medical stone 1-2, Calcium Fluoride (Fluorspan) 3-4, magnesium oxide 6-7, iron(ic) chloride 1-2, feldspar in powder 2-3, Tremoliteor Tremoliteasbestos 5-6, magnesium sulfate 2-3, nano silicon 2-3, jade powder 3-4, montmorillonite 1-2, potassium silicofluoride 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
Liner plate of the present invention adds the elements such as lanthanum, molybdenum, niobium on the basis of middle low carbon steel, and it is good, high temperature resistant that the steel alloy obtaining not only has high hardness, high strength, wear resistance, but also have good toughness, good, the corrosion resistant advantage of plasticity, and cost performance is high.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 heat resistant and wear resistant steel alloy lining material, chemical element composition and mass percent thereof that it contains are: carbon 0.2-0.4, silicon 0.2-0.4, manganese 3.5-3.7, chromium 0.7-0.9, molybdenum 0.8-1.1, vanadium 1.2-1.4, lanthanum 0.1-0.15, Nb0.04-0.07, S≤0.04, P≤0.04, surplus are iron.
The production method of described heat resistant and wear resistant steel alloy lining material is as follows:
(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) chromium, vanadium; (2) silicon, manganese, lanthanum; (3) other remaining components; The timed interval that each batch drops into element is 24 minutes, after feeding intake, stirs.
Described casting postheat treatment is: first by room temperature, with 210 ℃/h of speed, be warming up to 505 ℃, be incubated 65 minutes, then be warming up to 705 ℃ with 210 ℃/h of speed, then be cooled to 605 ℃ with 195 ℃/h of speed, with 225 ℃/h of speed, be warming up to 945 ℃ again, be incubated 3.5 hours; With 185 ℃/h of speed, be cooled to 605 ℃ again, be incubated 55 minutes, then be cooled to 495 ℃ with 185 ℃/h of speed, be incubated 75 minutes; With 175 ℃/h of speed, be cooled to 225 ℃ again, be incubated 2.5 hours; With 210 ℃/h of speed, be warming up to 340 ℃ again, then be cooled to 205 ℃ with 165 ℃/h of speed, then be warming up to 540 ℃ 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, medical stone 1.5, Calcium Fluoride (Fluorspan) 3.5, magnesium oxide 6.5, iron(ic) chloride 1.5, feldspar in powder 2.5, Tremoliteor Tremoliteasbestos 5.5, magnesium sulfate 2.5, nano silicon 2.5, jade powder 3.5, montmorillonite 1.5, potassium silicofluoride 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 150 order powder; Gained powder is added and is equivalent to the silane resin acceptor kh-550 of powder weight 2.6%, 1.5% nano-carbon powder, after mixing, under 11Mpa, be pressed into base, then, at 940 ℃, calcine 3.6 hours, cooling after, then be ground into 190 order powder, obtain.
The mechanical property of heat resistant and wear resistant steel alloy lining material of the present invention is: tensile strength 1121MPa, yield strength 925MPa, unit elongation 14.7%, relative reduction in area 30.7%, impact absorbing energy 53.7J, impelling strength 63J/cm2, hardness 271HB.
Claims (4)
1. a heat resistant and wear resistant steel alloy lining material, is characterized in that: chemical element composition and mass percent thereof that it contains are: carbon 0.2-0.4, silicon 0.2-0.4, manganese 3.5-3.7, chromium 0.7-0.9, molybdenum 0.8-1.1, vanadium 1.2-1.4, lanthanum 0.1-0.15, Nb0.04-0.07, S≤0.04, P≤0.04, surplus are iron.
2. the production method of heat resistant and wear resistant steel alloy lining material 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, vanadium; (2) silicon, manganese, lanthanum; (3) other remaining components; The timed interval that each batch drops into element is 23-25 minute, after feeding intake, stirs.
3. the production method of heat resistant and wear resistant steel alloy lining material according to claim 2, it is characterized in that: described casting postheat treatment is: first by room temperature, with 200-220 ℃/h of speed, be warming up to 500-510 ℃, insulation 60-70 minute, with 200-220 ℃/h of speed, be warming up to 700-710 ℃ again, with 190-200 ℃/h of speed, be cooled to 600-610 ℃ again, with 220-230 ℃/h of speed, be warming up to 940-950 ℃ again, insulation 3-4 hour; With 180-190 ℃/h of speed, be cooled to 600-610 ℃ again, insulation 50-60 minute, then with 180-190 ℃/h of speed, be cooled to 490-500 ℃, insulation 70-80 minute; With 170-180 ℃/h of speed, be cooled to 220-230 ℃ again, insulation 2-3 hour; With 200-220 ℃/h of speed, be warming up to 330-350 ℃ again, then be cooled to 200-210 ℃ with 160-170 ℃/h of speed, then be warming up to 530-550 ℃ with 180-190 ℃/h of speed, insulation 2-3 hour, takes out air cooling and get final product.
4. the production method of heat resistant and wear resistant steel alloy lining material 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 30-40, medical stone 1-2, Calcium Fluoride (Fluorspan) 3-4, magnesium oxide 6-7, iron(ic) chloride 1-2, feldspar in powder 2-3, Tremoliteor Tremoliteasbestos 5-6, magnesium sulfate 2-3, nano silicon 2-3, jade powder 3-4, montmorillonite 1-2, potassium silicofluoride 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 (5)
| 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 |
| CN103937930A (en) * | 2014-04-10 | 2014-07-23 | 铜陵南江鑫钢实业有限公司 | Refining agent used for alloy steel smelting and preparation method thereof |
| CN105128316A (en) * | 2015-09-14 | 2015-12-09 | 芜湖奕辰模具科技有限公司 | Blow-molding mould for liquid medicine tank of sprayer |
| CN105128242A (en) * | 2015-09-14 | 2015-12-09 | 芜湖奕辰模具科技有限公司 | Cold press forming die of pipes |
| CN105316601A (en) * | 2015-10-28 | 2016-02-10 | 安徽省三方新材料科技有限公司 | Lining plate for hard rock crusher and preparing method for lining plate |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012172203A (en) * | 2011-02-22 | 2012-09-10 | Nippon Steel Corp | High strength hot rolled steel sheet having high ductility with excellent local deformability and less orientation dependence of formability |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012172203A (en) * | 2011-02-22 | 2012-09-10 | Nippon Steel Corp | High strength hot rolled steel sheet having high ductility with excellent local deformability and less orientation dependence of formability |
Cited By (8)
| 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 |
| CN103937930A (en) * | 2014-04-10 | 2014-07-23 | 铜陵南江鑫钢实业有限公司 | Refining agent used for alloy steel smelting and preparation method thereof |
| CN103937930B (en) * | 2014-04-10 | 2016-04-13 | 铜陵南江鑫钢实业有限公司 | A kind of refining agent for steel alloy melting and preparation method thereof |
| CN105128316A (en) * | 2015-09-14 | 2015-12-09 | 芜湖奕辰模具科技有限公司 | Blow-molding mould for liquid medicine tank of sprayer |
| CN105128242A (en) * | 2015-09-14 | 2015-12-09 | 芜湖奕辰模具科技有限公司 | Cold press forming die of pipes |
| CN105316601A (en) * | 2015-10-28 | 2016-02-10 | 安徽省三方新材料科技有限公司 | Lining plate for hard rock crusher and preparing method for lining plate |
| CN105316601B (en) * | 2015-10-28 | 2017-03-22 | 安徽省三方新材料科技有限公司 | Lining plate for hard rock crusher and preparing method for lining plate |
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