CN103757537A - High hardness and low cold brittleness alloy steel material and preparation method thereof - Google Patents
High hardness and low cold brittleness alloy steel material and preparation method thereof Download PDFInfo
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- 229910000851 Alloy steel Inorganic materials 0.000 title claims abstract description 17
- 239000000463 material Substances 0.000 title claims abstract description 15
- 238000002360 preparation method Methods 0.000 title claims description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 18
- 238000007670 refining Methods 0.000 claims abstract description 11
- 229910052742 iron Inorganic materials 0.000 claims abstract description 9
- 238000004519 manufacturing process Methods 0.000 claims abstract description 9
- 239000002994 raw material Substances 0.000 claims abstract description 9
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 8
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims abstract description 8
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 7
- 239000011733 molybdenum Substances 0.000 claims abstract description 7
- 239000010703 silicon Substances 0.000 claims abstract description 7
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 7
- 229910052720 vanadium Inorganic materials 0.000 claims abstract description 7
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000010936 titanium Substances 0.000 claims abstract description 6
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 6
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910052729 chemical element Inorganic materials 0.000 claims abstract description 4
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 claims abstract description 4
- 239000000843 powder Substances 0.000 claims description 15
- 238000005275 alloying Methods 0.000 claims description 9
- 238000005266 casting Methods 0.000 claims description 9
- 238000009413 insulation Methods 0.000 claims description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 6
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 6
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 6
- 239000004411 aluminium Substances 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 6
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- 238000010792 warming Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 4
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 3
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 claims description 3
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 3
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 3
- 229910000805 Pig iron Inorganic materials 0.000 claims description 3
- 239000004113 Sepiolite Substances 0.000 claims description 3
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims description 3
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims description 3
- 229910021502 aluminium hydroxide Inorganic materials 0.000 claims description 3
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 claims description 3
- 229910052804 chromium Inorganic materials 0.000 claims description 3
- 239000011651 chromium Substances 0.000 claims description 3
- 239000004927 clay Substances 0.000 claims description 3
- 229910017052 cobalt Inorganic materials 0.000 claims description 3
- 239000010941 cobalt Substances 0.000 claims description 3
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 3
- 238000006477 desulfuration reaction Methods 0.000 claims description 3
- 230000023556 desulfurization Effects 0.000 claims description 3
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 claims description 3
- 239000012467 final product Substances 0.000 claims description 3
- 239000010436 fluorite Substances 0.000 claims description 3
- 239000010977 jade Substances 0.000 claims description 3
- 229910052748 manganese Inorganic materials 0.000 claims description 3
- 239000011572 manganese Substances 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 229910052901 montmorillonite Inorganic materials 0.000 claims description 3
- 229910021392 nanocarbon Inorganic materials 0.000 claims description 3
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- 239000010955 niobium Substances 0.000 claims description 3
- 238000010791 quenching Methods 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 229910052624 sepiolite Inorganic materials 0.000 claims description 3
- 235000019355 sepiolite Nutrition 0.000 claims description 3
- 229910000077 silane Inorganic materials 0.000 claims description 3
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 3
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 3
- 239000002893 slag Substances 0.000 claims description 3
- 229910052708 sodium Inorganic materials 0.000 claims description 3
- 239000011734 sodium Substances 0.000 claims description 3
- 229940001516 sodium nitrate Drugs 0.000 claims description 3
- 235000010344 sodium nitrate Nutrition 0.000 claims description 3
- 239000004317 sodium nitrate Substances 0.000 claims description 3
- 239000000758 substrate Substances 0.000 claims description 3
- 239000004408 titanium dioxide Substances 0.000 claims description 3
- 229910052902 vermiculite Inorganic materials 0.000 claims description 3
- 239000010455 vermiculite Substances 0.000 claims description 3
- 235000019354 vermiculite Nutrition 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 239000000956 alloy Substances 0.000 abstract description 5
- 229910045601 alloy Inorganic materials 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 3
- 229910001339 C alloy Inorganic materials 0.000 description 1
- 229910000639 Spring steel Inorganic materials 0.000 description 1
- 229910001315 Tool steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
Landscapes
- Treatment Of Steel In Its Molten State (AREA)
Abstract
The invention relates to a high hardness and low cold brittleness alloy steel material, which contains the following chemical elements by mass: 1.1-1.3 of carbon, 0.5-0.8 of silicon, 0.2-0.3 of manganese, 7.6-7.8 of titanium, 0.02-0.05 of aluminum, 1.0-2.5 of molybdenum, 0.006-0.009 of vanadium, 0.3-0.5 of Nb, less than or equal to 0.030 of P, less than or equal to 0.030 of S, and the balance iron. According to the invention, by using titanium and other raw material combination, reasonably setting the proportion and the production process, and reasonably setting the putting sequence, the formed alloy material has the characteristics of high strength, hardness, wear resistance and the like, and especially has low cold brittleness, thus being suitable for machinery operating in a low temperature environment. And part of scrap iron is used as the raw material to make the quality of the alloy stable and uniform. By adding the refining agent, the degree of porosity can be lowered by 1-2 degrees.
Description
Technical field
The present invention relates to metallic substance preparation field, relate in particular to low cold shortness alloy steel material of a kind of high rigidity and preparation method thereof.
Background technology
The development of steel alloy has had the history of more than 100 year, up to the present, diversified steel alloy is employed industrial, mainly contain with Types Below: quenched and tempered steel, spring steel, tool steel, rapid steel, die steel, high, normal, basic carbon alloy steel etc., so far, although steel alloy technology is greatly developed, but, still have a lot of problems to exist, as fastness to rubbing, hardness, rustless property, corrosion resistance nature, high and low temperature resistance, fragility, toughness, costs etc. can not be taken into account, in a lot of occasions, can't meet the requirement of production, also require further improvement, to enhance productivity, reduce costs, improve security, for high-quality precision and sophisticated technology development provides safeguard, for social development provides power, task is also very arduous.
Summary of the invention
The object of the present invention is to provide low cold shortness alloy steel material of a kind of high rigidity and preparation method thereof, this alloy material has the feature of high rigidity, low cold shortness.
Technical scheme of the present invention is as follows:
The low cold shortness alloy steel material of a kind of high rigidity, is characterized in that: chemical element composition and mass percent thereof that it contains are: carbon 1.1-1.3, silicon 0.5-0.8, manganese 0.2-0.3, titanium 7.6-7.8, aluminium 0.02-0.05, molybdenum 1.0-2.5, vanadium 0.006-0.009, Nb0.3-0.5, P≤0.030, S≤0.030, surplus are iron.
The production method of the low cold shortness alloy steel material of described high rigidity, is characterized in that:
(1), the pig iron and scrap iron are dropped in stove and melt and originate as ferrous substrate in 1:1 ratio; Carry out desulfurization, deoxidation, alloying, the refining of employing refining agent, casting, casting postheat treatment etc.;
(2) in alloying process, to the lot sequence that drops into alloying element in stove, be: (1) silicon, aluminium, vanadium; (2) manganese, molybdenum, Nb; (3) chromium, nickel, cobalt; (4) other remaining component; The each batch of timed interval of dropping into element is 10-13 minute, after feeding intake, stirs.
Described casting postheat treatment is: first by room temperature, with 230-250 ℃/h of speed, be warming up to 935-950 ℃, insulation 3-4 hour; With 140-160 ℃/h of speed, be cooled to 640-660 ℃ again, insulation 50-80 minute; With 100-120 ℃/h of speed, be cooled to 320-340 ℃ again, insulation 2-3 hour; With 150-170 ℃/h of speed, be warming up to 530-550 ℃ again, 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 10-12, Wingdale 3-4, sepiolite 2-3, Sodium Silicofluoride 2-3, SODIUMNITRATE 1-2, vermiculite 5-6, silicon carbide 9-11, titanium dioxide 2-3, fluorite 6-8, aluminium hydroxide 8-10, jade powder 3-4, montmorillonite 1-2; Preparation method mixes each raw material, is heated to molten state and stirs remove slag, and 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, by using the material combination such as titanium, rationally arranges proportioning and production technique, and input order is rationally set, and the alloy material of formation has the features such as high intensity, hardness, wear resistance, especially has low cold shortness, is adapted at the machinery of low temperature environment operation; And use part scrap iron as raw material, make the steady quality homogeneous of alloy.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, is controlled effectively, and 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 low cold shortness alloy steel material of a kind of high rigidity, chemical element composition and mass percent thereof that it contains are: carbon 1.1-1.3, silicon 0.5-0.8, manganese 0.2-0.3, titanium 7.6-7.8, aluminium 0.02-0.05, molybdenum 1.0-2.5, vanadium 0.006-0.009, Nb0.3-0.5, P≤0.030, S≤0.030, surplus are iron.
The production method of the low cold shortness alloy steel material of described high rigidity is:
(1), the pig iron and scrap iron are dropped in stove and melt and originate as ferrous substrate in 1:1 ratio; Carry out desulfurization, deoxidation, alloying, the refining of employing refining agent, casting, casting postheat treatment etc.;
(2) in alloying process, to the lot sequence that drops into alloying element in stove, be: (1) silicon, aluminium, vanadium; (2) manganese, molybdenum, Nb; (3) chromium, nickel, cobalt; (4) other remaining component; The each batch of timed interval of dropping into element is 11 minutes, after feeding intake, stirs.
Described casting postheat treatment is: first by room temperature, with 240 ℃/h of speed, be warming up to 940 ℃, be incubated 3.5 hours; With 150 ℃/h of speed, be cooled to 650 ℃ again, be incubated 60 minutes; With 110 ℃/h of speed, be cooled to 330 ℃ again, be incubated 2.5 hours; With 160 ℃/h of speed, be warming up to 540 ℃ again, 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 4, clay 10, Wingdale 3, sepiolite 2, Sodium Silicofluoride 2, SODIUMNITRATE 2, vermiculite 5, silicon carbide 9, titanium dioxide 2, fluorite 8, aluminium hydroxide 8, jade powder 3, montmorillonite 2; Preparation method mixes each raw material, is heated to molten state and stirs remove slag, and 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%, 1% nano-carbon powder, after mixing, under 12-15Mpa, be pressed into base, then, at 900-950 ℃, calcine 3-4 hour, cooling after, be ground into again 150-250 order powder, obtain.
The mechanical property of the low cold shortness alloy steel material of high rigidity of the present invention is: tensile strength 1356MPa, yield strength 953MPa, unit elongation 12.5%, relative reduction in area 24%, impact absorbing energy 49.7J, impelling strength 61.2J/cm2, hardness 293HB.
Claims (4)
1. the low cold shortness alloy steel material of high rigidity, is characterized in that: chemical element composition and mass percent thereof that it contains are: carbon 1.1-1.3, silicon 0.5-0.8, manganese 0.2-0.3, titanium 7.6-7.8, aluminium 0.02-0.05, molybdenum 1.0-2.5, vanadium 0.006-0.009, Nb0.3-0.5, P≤0.030, S≤0.030, surplus are iron.
2. the production method of the low cold shortness alloy steel material of high rigidity according to claim 1, is characterized in that:
(1), the pig iron and scrap iron are dropped in stove and melt and originate as ferrous substrate in 1:1 ratio; Carry out desulfurization, deoxidation, alloying, the refining of employing refining agent, casting, casting postheat treatment etc.;
(2) in alloying process, to the lot sequence that drops into alloying element in stove, be: (1) silicon, aluminium, vanadium; (2) manganese, molybdenum, Nb; (3) chromium, nickel, cobalt; (4) other remaining component; The each batch of timed interval of dropping into element is 10-13 minute, after feeding intake, stirs.
3. the production method of the low cold shortness alloy steel material of high rigidity according to claim 2, is characterized in that: described casting postheat treatment is: first by room temperature, with 230-250 ℃/h of speed, be warming up to 935-950 ℃, insulation 3-4 hour; With 140-160 ℃/h of speed, be cooled to 640-660 ℃ again, insulation 50-80 minute; With 100-120 ℃/h of speed, be cooled to 320-340 ℃ again, insulation 2-3 hour; With 150-170 ℃/h of speed, be warming up to 530-550 ℃ again, insulation 2-3 hour, takes out air cooling and get final product.
4. the production method of the low cold shortness alloy steel material of high rigidity 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 10-12, Wingdale 3-4, sepiolite 2-3, Sodium Silicofluoride 2-3, SODIUMNITRATE 1-2, vermiculite 5-6, silicon carbide 9-11, titanium dioxide 2-3, fluorite 6-8, aluminium hydroxide 8-10, jade powder 3-4, montmorillonite 1-2; Preparation method mixes each raw material, is heated to molten state and stirs remove slag, and 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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| CN201310696622.8A CN103757537A (en) | 2013-12-18 | 2013-12-18 | High hardness and low cold brittleness alloy steel material and preparation method thereof |
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| CN201310696622.8A CN103757537A (en) | 2013-12-18 | 2013-12-18 | High hardness and low cold brittleness alloy steel material and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104073733A (en) * | 2014-05-09 | 2014-10-01 | 铜陵市明诚铸造有限责任公司 | Air corrosion-resistant alloy steel material and preparation method thereof |
| CN104073742A (en) * | 2014-05-09 | 2014-10-01 | 铜陵市明诚铸造有限责任公司 | Alloy steel material for air valve and preparation method thereof |
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2013
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| CN104073742A (en) * | 2014-05-09 | 2014-10-01 | 铜陵市明诚铸造有限责任公司 | Alloy steel material for air valve and preparation method thereof |
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