CN103667891A - Alloy steel material of pump for delivering mixed acid liquid containing chloride radical, and preparation method thereof - Google Patents
Alloy steel material of pump for delivering mixed acid liquid containing chloride radical, and preparation method thereof Download PDFInfo
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- CN103667891A CN103667891A CN201310550344.5A CN201310550344A CN103667891A CN 103667891 A CN103667891 A CN 103667891A CN 201310550344 A CN201310550344 A CN 201310550344A CN 103667891 A CN103667891 A CN 103667891A
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- 229910000851 Alloy steel Inorganic materials 0.000 title claims abstract description 24
- 239000000463 material Substances 0.000 title claims abstract description 15
- 238000002360 preparation method Methods 0.000 title claims description 8
- 239000007788 liquid Substances 0.000 title abstract description 4
- 239000002253 acid Substances 0.000 title abstract 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 22
- 238000007670 refining Methods 0.000 claims abstract description 19
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 12
- 238000005266 casting Methods 0.000 claims abstract description 11
- 229910052742 iron Inorganic materials 0.000 claims abstract description 11
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 9
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 9
- 238000004519 manufacturing process Methods 0.000 claims abstract description 8
- 229910052729 chemical element Inorganic materials 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
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 7
- 239000010703 silicon Substances 0.000 claims abstract description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 4
- 239000000470 constituent Substances 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
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910052721 tungsten Inorganic materials 0.000 claims abstract description 4
- 239000010937 tungsten Substances 0.000 claims abstract description 4
- 239000000203 mixture Substances 0.000 claims description 18
- 238000006396 nitration reaction Methods 0.000 claims description 15
- 239000000843 powder Substances 0.000 claims description 15
- 238000010792 warming Methods 0.000 claims description 15
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims description 13
- 238000005275 alloying Methods 0.000 claims description 12
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 239000002994 raw material Substances 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 238000009413 insulation Methods 0.000 claims description 8
- 239000004411 aluminium Substances 0.000 claims description 7
- 229910000805 Pig iron Inorganic materials 0.000 claims description 6
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 6
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 6
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 3
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 claims description 3
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 3
- 229910020808 NaBF Inorganic materials 0.000 claims description 3
- 239000006004 Quartz sand Substances 0.000 claims description 3
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 3
- DPDMMXDBJGCCQC-UHFFFAOYSA-N [Na].[Cl] Chemical compound [Na].[Cl] DPDMMXDBJGCCQC-UHFFFAOYSA-N 0.000 claims description 3
- 229960000892 attapulgite Drugs 0.000 claims description 3
- 239000002585 base Substances 0.000 claims description 3
- 238000006477 desulfuration reaction Methods 0.000 claims description 3
- 230000023556 desulfurization Effects 0.000 claims description 3
- 238000001514 detection method Methods 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
- 239000010977 jade Substances 0.000 claims description 3
- 239000004571 lime Substances 0.000 claims description 3
- 229910052748 manganese Inorganic materials 0.000 claims description 3
- 239000011572 manganese Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 229910052901 montmorillonite Inorganic materials 0.000 claims description 3
- 229910021392 nanocarbon Inorganic materials 0.000 claims description 3
- 229910052625 palygorskite Inorganic materials 0.000 claims description 3
- 235000015320 potassium carbonate Nutrition 0.000 claims description 3
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims description 3
- 230000008569 process Effects 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
- 229910000077 silane Inorganic materials 0.000 claims description 3
- 239000011734 sodium Substances 0.000 claims description 3
- 229910052938 sodium sulfate Inorganic materials 0.000 claims description 3
- 235000011152 sodium sulphate Nutrition 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- 239000000758 substrate Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims description 2
- 229910052689 Holmium Inorganic materials 0.000 abstract description 2
- 238000005260 corrosion Methods 0.000 abstract description 2
- 230000007797 corrosion Effects 0.000 abstract description 2
- KJZYNXUDTRRSPN-UHFFFAOYSA-N holmium atom Chemical compound [Ho] KJZYNXUDTRRSPN-UHFFFAOYSA-N 0.000 abstract description 2
- 229910052746 lanthanum Inorganic materials 0.000 abstract description 2
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 abstract description 2
- 229910052761 rare earth metal Inorganic materials 0.000 abstract description 2
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 3
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 2
- 239000000460 chlorine Substances 0.000 description 2
- 229910052801 chlorine Inorganic materials 0.000 description 2
- 229910000639 Spring steel Inorganic materials 0.000 description 1
- 229910001315 Tool steel Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910001325 element alloy Inorganic materials 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- PVGBHEUCHKGFQP-UHFFFAOYSA-N sodium;n-[5-amino-2-(4-aminophenyl)sulfonylphenyl]sulfonylacetamide Chemical compound [Na+].CC(=O)NS(=O)(=O)C1=CC(N)=CC=C1S(=O)(=O)C1=CC=C(N)C=C1 PVGBHEUCHKGFQP-UHFFFAOYSA-N 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
Classifications
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses an alloy steel material of a pump for delivering mixed acid liquid containing chloride radical. The alloy steel material contains the following chemical element constituents by mass percent: 0.1-0.4% of carbon, 0.1-0.15% of silicon, 2.2-2.4% of tungsten, 5.0-5.1% of manganese, 0.4-0.6% of aluminum, 0.6-0.8% of molybdenum, 3.6-3.8% of nickel, 0.7-0.9% of La, 0.06-0.09% of Ho, not more than 0.030% of P, not more than 0.030% of S and the rest of iron. According to the invention, the alloy steel is modified by rare earth elements, such as lanthanum and holmium, and other elements, such as aluminum and nickel, and the prepared alloy steel has the characteristics of chloride radical mixed acid corrosion resistance, high strength, high hardness, good abrasive resistance and good flexibility; a refining agent provided by the invention is used for foundry production, by the refining agent, yield is improved obviously, especially, porosity in a casting is reduced by 1-2 degrees, and oxide inclusion condition is at about level 2. The alloy steel provided by the invention is used for the pump for delivering the mixed acid liquid containing chloride radical, and the service life of the pump is prolonged greatly.
Description
Technical field
The present invention relates to metallic substance preparation field, relate in particular to alloy steel material of a kind of nitration mixture liquor pump for delivery of chloride 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 contains with Types Below: the steel alloy of the various excellent performances such as quenched and tempered steel, spring steel, roller bearing steel, tool steel, property steel, high temperature steel, low-temperature steel.
The steel alloy that pump valve is used has varied, technology has very much progress, but still has a lot of problems to exist, as wear resistance, hardness, rustless property, corrosion resistance nature, high and low temperature resistance, fragility, toughness etc., 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 alloy steel material of a kind of nitration mixture liquor pump for delivery of chloride and preparation method thereof, this alloy material has advantages of that wear resistance is good, the root of resistance to chlorine nitration mixture burn into high strength, good toughness.
Technical scheme of the present invention is as follows:
An alloy steel material for delivery of the nitration mixture liquor pump of chloride, is characterized in that: chemical element composition and mass percent thereof that it contains are: carbon 0.1-0.4, silicon 0.1-0.15, tungsten 2.2-2.4, manganese 5.0-5.1, aluminium 0.4-0.6, molybdenum 0.6-0.8, nickel 3.6-3.8, La0.7-0.9, Ho0.06-0.09, P≤0.030, S≤0.030, surplus are iron.
The production method of the alloy steel material of the described nitration mixture liquor pump for delivery of chloride, is characterized in that:
(1), preparing the pig iron and scrap iron originates as ferrous substrate in 1:2-3 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, La; (2) manganese, aluminium, molybdenum; (3) other remaining component; The timed interval that each batch drops into element is 17-20 minute, after feeding intake, stirs.
Described casting postheat treatment is: first by room temperature, with 200-220 ℃/h of speed, be warming up to 620-640 ℃, then be cooled to 530-550 ℃ with 130-150 ℃/h of speed, then continue to be warming up to 935-950 ℃ with 200-220 ℃/h of speed, insulation 3-4 hour; With 140-150 ℃/h of speed, be cooled to 630-640 ℃ again, then be warming up to 750-760 ℃ with 130-140 ℃/h of speed, then be cooled to 570-590 ℃ with 140-150 ℃/h of speed, insulation 60-80 minute; With 120-130 ℃/h of speed, be cooled to 300-310 ℃ again, insulation 2-3 hour; With 140-150 ℃/h of speed, be warming up to 350-370 ℃ again, then be cooled to 220-230 ℃ with 60-70 ℃/h of speed, then be warming up to 520-540 ℃ with 140-150 ℃/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 rhombspar 3-5, sodium sulfate 3-5, aluminum chloride 5-8, salt of wormwood 3-5, attapulgite 8-10, NaBF
45-8, sodium-chlor 3-5, Na
2tiF
68-10, NaF 5-8, lime 2-3, quartz sand 4-5, jade powder 3-4, montmorillonite 1-2; 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 is by using the element alloy steel such as rare-earth elements of lanthanum, holmium and aluminium, nickel to carry out modification, reasonable raw material proportioning, gradation throwing raw materials, rationally control casting postheat treatment temperature, the steel alloy of formation has that the root of resistance to chlorine nitration mixture burn into high strength, high rigidity, wear resistance are good, the feature of good toughness; Use part scrap iron as raw material, and through secondary refining, make more stable uniform of quality.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.Steel alloy of the present invention is for delivery of the pump of the nitration mixture liquid of chloride, and greatly extend work-ing life.
Embodiment
For delivery of an alloy steel material for the nitration mixture liquor pump of chloride, chemical element composition and mass percent thereof that it contains are: carbon 0.1-0.4, silicon 0.1-0.15, tungsten 2.2-2.4, manganese 5.0-5.1, aluminium 0.4-0.6, molybdenum 0.6-0.8, nickel 3.6-3.8, La0.7-0.9, Ho0.06-0.09, P≤0.030, S≤0.030, surplus are iron.
The production method of the alloy steel material of the described nitration mixture liquor pump for delivery of chloride, is characterized in that:
(1), preparing the pig iron and scrap iron originates as ferrous substrate in 1:2.5 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, La; (2) manganese, aluminium, molybdenum; (3) other remaining component; The timed interval that each batch drops into element is 18 minutes, after feeding intake, stirs.
Described casting postheat treatment is: first by room temperature, with 210 ℃/h of speed, be warming up to 630 ℃, then be cooled to 540 ℃ with 140 ℃/h of speed, then continue to be warming up to 940 ℃ with 210 ℃/h of speed, be incubated 3.5 hours; With 145 ℃/h of speed, be cooled to 635 ℃ again, then be warming up to 755 ℃ with 135 ℃/h of speed, then be cooled to 580 ℃ with 145 ℃/h of speed, be incubated 70 minutes; With 125 ℃/h of speed, be cooled to 305 ℃ again, be incubated 2.5 hours; With 145 ℃/h of speed, be warming up to 360 ℃ again, then be cooled to 225 ℃ with 65 ℃/h of speed, then be warming up to 530 ℃ with 145 ℃/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 rhombspars 4, sodium sulfate 4, aluminum chloride 6, salt of wormwood 4, attapulgite 9, NaBF
47, sodium-chlor 4, Na
2tiF
69, NaF 7, lime 2.5, quartz sand 4.6, jade powder 3.5, montmorillonite 1.5; 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 3%, 2% nano-carbon powder, after mixing, under 12Mpa, be pressed into base, then, at 930 ℃, calcine 3.4 hours, cooling after, then be ground into 190 order powder, obtain.
The present invention for delivery of the mechanical property of the alloy steel material of the nitration mixture liquor pump of chloride is: tensile strength 1355MPa, yield strength 945MPa, unit elongation 13.8%, relative reduction in area 27.8%, impact absorbing energy 53.6J, impelling strength 61.5J/cm2, hardness 291.6HB.
Claims (4)
1. for delivery of an alloy steel material for the nitration mixture liquor pump of chloride, it is characterized in that: chemical element composition and mass percent thereof that it contains are: carbon 0.1-0.4, silicon 0.1-0.15, tungsten 2.2-2.4, manganese 5.0-5.1, aluminium 0.4-0.6, molybdenum 0.6-0.8, nickel 3.6-3.8, La0.7-0.9, Ho0.06-0.09, P≤0.030, S≤0.030, surplus are iron.
2. the production method of the alloy steel material of the nitration mixture liquor pump for delivery of chloride according to claim 1, is characterized in that:
(1), preparing the pig iron and scrap iron originates as ferrous substrate in 1:2-3 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, La; (2) manganese, aluminium, molybdenum; (3) other remaining component; The timed interval that each batch drops into element is 17-20 minute, after feeding intake, stirs.
3. the production method of the alloy steel material of the nitration mixture liquor pump for delivery of chloride 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 620-640 ℃, with 130-150 ℃/h of speed, be cooled to 530-550 ℃ again, continue to be again warming up to 935-950 ℃ with 200-220 ℃/h of speed insulation 3-4 hour; With 140-150 ℃/h of speed, be cooled to 630-640 ℃ again, then be warming up to 750-760 ℃ with 130-140 ℃/h of speed, then be cooled to 570-590 ℃ with 140-150 ℃/h of speed, insulation 60-80 minute; With 120-130 ℃/h of speed, be cooled to 300-310 ℃ again, insulation 2-3 hour; With 140-150 ℃/h of speed, be warming up to 350-370 ℃ again, then be cooled to 220-230 ℃ with 60-70 ℃/h of speed, then be warming up to 520-540 ℃ with 140-150 ℃/h of speed, insulation 2-3 hour, takes out air cooling and get final product.
4. the production method of the alloy steel material of the nitration mixture liquor pump for delivery of chloride 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 rhombspar 3-5, sodium sulfate 3-5, aluminum chloride 5-8, salt of wormwood 3-5, attapulgite 8-10, NaBF
45-8, sodium-chlor 3-5, Na
2tiF
68-10, NaF 5-8, lime 2-3, quartz sand 4-5, jade powder 3-4, montmorillonite 1-2; 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 |
|---|---|---|---|
| CN201310550344.5A CN103667891A (en) | 2013-11-08 | 2013-11-08 | Alloy steel material of pump for delivering mixed acid liquid containing chloride radical, and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310550344.5A CN103667891A (en) | 2013-11-08 | 2013-11-08 | Alloy steel material of pump for delivering mixed acid liquid containing chloride radical, and preparation method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN103667891A true CN103667891A (en) | 2014-03-26 |
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|---|---|---|---|
| CN201310550344.5A Pending CN103667891A (en) | 2013-11-08 | 2013-11-08 | Alloy steel material of pump for delivering mixed acid liquid containing chloride radical, and preparation method thereof |
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| CN102409138B (en) * | 2011-10-31 | 2013-05-22 | 芜湖山桥铁路器材有限公司 | A manufacturing process of alloy steel for track frogs |
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Application publication date: 20140326 |