CN103614665A - Antimony-containing highly-wear-resistant alloy steel material used for pump valves and preparation method of the alloy steel material - Google Patents
Antimony-containing highly-wear-resistant alloy steel material used for pump valves and preparation method of the alloy steel material Download PDFInfo
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- CN103614665A CN103614665A CN201310505941.6A CN201310505941A CN103614665A CN 103614665 A CN103614665 A CN 103614665A CN 201310505941 A CN201310505941 A CN 201310505941A CN 103614665 A CN103614665 A CN 103614665A
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Abstract
The invention discloses an antimony-containing highly-wear-resistant alloy steel material used for pump valves. The alloy steel material comprises following chemical elements by weight: 0.3-0.45% of carbon, 0.7-0.85% of silicon, 1.1-1.4% of manganese, 2.7-2.9% of chromium, 0.3-0.5% of boron, 0.12-0.15% of cerium, 0.5-0.8% of As, 0.02-0.04% of Sb, S not less than 0.04% and P not less than 0.04%, with the balance being iron. By adoption of combination of the antimony, the boron, the cerium, and other elements, the alloy steel obtained has high hardness, good wear resistance, good toughness and good corrosion resistance, is suitable for working in highly-wearing environments, such as pump truck tank bodies, delivery pipes, bearings, pump shafts, and the like, and has service lifetime two times longer than a common material. A portion of waste iron is used as a raw material of the alloy steel material and a secondary refining process is performed so that the quality of the alloy steel material is stable and uniform. A refining agent provided by the invention is used for casting production. The porosity degree in castings is reduced by 1-2 degrees. Oxide inclusion is at about the 2 level.
Description
Technical field
The present invention relates to metallic substance preparation field, relate in particular to a kind of pump valve with containing antimony high-wear-resistant alloy steel and preparation method thereof.
Background technology
The environment of pump valve work is various, badly, very high to the requirement of material, the steel alloy that pump valve is used at present has varied, technology has very much progress, but still have 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 a kind of pump valve with containing antimony high-wear-resistant alloy steel and preparation method thereof, this alloy material has advantages of extreme hardness, extremely wear-resisting.
Technical scheme of the present invention is as follows:
Pump valve, with containing an antimony high-wear-resistant alloy steel, is characterized in that: chemical element composition and mass percent thereof that it contains are: carbon 0.3-0.45, silicon 0.7-0.85, manganese 1.1-1.4, chromium 2.7-2.9, boron 0.3-0.5, cerium 0.12-0.15, As0.5-0.8, Sb0.02-0.04, S≤0.04, P≤0.04, surplus are iron.
Production method containing antimony high-wear-resistant alloy steel for described pump valve, is characterized in that:
(1), preparing the pig iron and scrap iron originates as ferrous substrate in 1:1-3 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, manganese, As; (2) chromium, boron, Sb; (3) other remaining components; The timed interval that each batch drops into element is 20-23 minute, after feeding intake, stirs.
Described casting postheat treatment is: first by room temperature, with 200-210 ℃/h of speed, be warming up to 620-630 ℃, insulation 50-60 minute, with 150-160 ℃/h of speed, be cooled to 460-470 ℃ again, with 200-210 ℃/h of speed, be warming up to 750-760 ℃ again, insulation 60-70 minute, with 200-210 ℃/h of speed, be warming up to 930-945 ℃ again, insulation 3-4 hour; With 150-160 ℃/h of speed, be cooled to 620-630 ℃ again, then be warming up to 720-730 ℃ with 200-210 ℃/h of speed, then be cooled to 500-510 ℃ with 150-160 ℃/h of speed, insulation 60-80 minute; With 150-160 ℃/h of speed, be cooled to 220-230 ℃ again, insulation 2-3 hour; With 200-210 ℃/h of speed, be warming up to 300-310 ℃ again, then be cooled to 200-210 ℃ with 150-160 ℃/h of speed, then be warming up to 520-530 ℃ with 200-210 ℃/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 30-34, bamboo charcoal 3-5, citric acid 2-3, calcium oxide 4-5, natural wollastonite 2-3, nano titanium oxide 1-2, Z 250 3-4, potassium primary phosphate 2-3, jade powder 3-4, montmorillonite 1-2, SODIUMNITRATE 3-4, saltpetre 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 is by using the multiple elements such as antimony, boron, cerium to combine, proportioning raw materials is rationally set, throwing raw materials in batches, rationally control casting post-processing temperature, the steel alloy extreme hardness, the wear resistance that obtain are fabulous, good toughness, erosion resistance are better, be applicable to work in superpower abrasion environment, as for pump truck tank body, transfer lime, bearing, pump shaft etc., work-ing life is longer 2 times than common material; The present invention uses part scrap iron as raw material, and through secondary refining, makes 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.
Embodiment
Pump valve is with containing an antimony high-wear-resistant alloy steel, and chemical element composition and mass percent thereof that it contains are: carbon 0.3-0.45, silicon 0.7-0.85, manganese 1.1-1.4, chromium 2.7-2.9, boron 0.3-0.5, cerium 0.12-0.15, As0.5-0.8, Sb0.02-0.04, S≤0.04, P≤0.04, surplus are iron.
Production method containing antimony high-wear-resistant alloy steel for described pump valve, is characterized in that:
(1), preparing the pig iron and scrap iron originates as ferrous substrate in 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) silicon, manganese, As; (2) chromium, boron, Sb; (3) other remaining components; The timed interval that each batch drops into element is 22 minutes, after feeding intake, stirs.
Described casting postheat treatment is: first by room temperature, with 205 ℃/h of speed, be warming up to 625 ℃, be incubated 55 minutes, with 155 ℃/h of speed, be cooled to 465 ℃ again, with 205 ℃/h of speed, be warming up to 755 ℃ again, be incubated 65 minutes, with 205 ℃/h of speed, be warming up to 935 ℃ again, be incubated 3.5 hours; With 155 ℃/h of speed, be cooled to 625 ℃ again, then be warming up to 725 ℃ with 205 ℃/h of speed, then be cooled to 505 ℃ with 155 ℃/h of speed, be incubated 70 minutes; With 155 ℃/h of speed, be cooled to 225 ℃ again, be incubated 2.5 hours; With 205 ℃/h of speed, be warming up to 305 ℃ again, then be cooled to 205 ℃ with 155 ℃/h of speed, then be warming up to 525 ℃ with 205 ℃/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 32, bamboo charcoal 4, citric acid 2.5, calcium oxide 4.5, natural wollastonite 2.5, nano titanium oxide 1.5, Z 250 3.5, potassium primary phosphate 2.5, jade powder 3.5, montmorillonite 1.5, SODIUMNITRATE 3.5, saltpetre 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 150 order powder; Gained powder is added and is equivalent to the silane resin acceptor kh-550 of powder weight 2.5%, 1.5% nano-carbon powder, after mixing, under 12Mpa, be pressed into base, then, at 930 ℃, calcine 3.5 hours, cooling after, then be ground into 200 order powder, obtain.
Pump valve of the present invention by the mechanical property containing antimony high-wear-resistant alloy steel is: tensile strength 1380MPa, yield strength 973MPa, unit elongation 13%, relative reduction in area 25%, impact absorbing energy 56J, impelling strength 66J/cm2, hardness 296HB.
Claims (4)
1. pump valve, with containing an antimony high-wear-resistant alloy steel, is characterized in that: chemical element composition and mass percent thereof that it contains are: carbon 0.3-0.45, silicon 0.7-0.85, manganese 1.1-1.4, chromium 2.7-2.9, boron 0.3-0.5, cerium 0.12-0.15, As0.5-0.8, Sb0.02-0.04, S≤0.04, P≤0.04, surplus are iron.
2. pump valve use according to claim 1, containing the production method of antimony high-wear-resistant alloy steel, is characterized in that:
(1), preparing the pig iron and scrap iron originates as ferrous substrate in 1:1-3 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, manganese, As; (2) chromium, boron, Sb; (3) other remaining components; The timed interval that each batch drops into element is 20-23 minute, after feeding intake, stirs.
3. pump valve use according to claim 2 is containing the production method of antimony high-wear-resistant alloy steel, it is characterized in that: described casting postheat treatment is: first by room temperature, with 200-210 ℃/h of speed, be warming up to 620-630 ℃, insulation 50-60 minute, with 150-160 ℃/h of speed, be cooled to 460-470 ℃ again, with 200-210 ℃/h of speed, be warming up to 750-760 ℃ again, insulation 60-70 minute, then with 200-210 ℃/h of speed, be warming up to 930-945 ℃, insulation 3-4 hour; With 150-160 ℃/h of speed, be cooled to 620-630 ℃ again, then be warming up to 720-730 ℃ with 200-210 ℃/h of speed, then be cooled to 500-510 ℃ with 150-160 ℃/h of speed, insulation 60-80 minute; With 150-160 ℃/h of speed, be cooled to 220-230 ℃ again, insulation 2-3 hour; With 200-210 ℃/h of speed, be warming up to 300-310 ℃ again, then be cooled to 200-210 ℃ with 150-160 ℃/h of speed, then be warming up to 520-530 ℃ with 200-210 ℃/h of speed, insulation 2-3 hour, takes out air cooling and get final product.
4. the production method containing antimony high-wear-resistant alloy steel for pump valve according to claim 2, is characterized in that: instrument comminuted steel shot 30-34, bamboo charcoal 3-5, citric acid 2-3, calcium oxide 4-5, natural wollastonite 2-3, nano titanium oxide 1-2, Z 250 3-4, potassium primary phosphate 2-3, jade powder 3-4, montmorillonite 1-2, SODIUMNITRATE 3-4, saltpetre 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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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104213027A (en) * | 2014-08-05 | 2014-12-17 | 安徽荣达阀门有限公司 | Stainless steel material for pump valve and manufacturing method thereof |
| CN104550931A (en) * | 2014-12-25 | 2015-04-29 | 铜陵市经纬流体科技有限公司 | Scattering particle reinforced iron-based powder metallurgical valve and preparation method thereof |
| CN104550935A (en) * | 2014-12-25 | 2015-04-29 | 铜陵市经纬流体科技有限公司 | Powder metallurgy material for low-expansion valves and preparation method thereof |
| CN104561753A (en) * | 2014-12-31 | 2015-04-29 | 铜陵市经纬流体科技有限公司 | Thermal strength type soft-seal brake valve body and preparing method thereof |
| CN104588640A (en) * | 2014-12-25 | 2015-05-06 | 铜陵市经纬流体科技有限公司 | High-hardness ferrum-based powder metallurgy material for valve and preparing method thereof |
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| JPS58113352A (en) * | 1981-12-28 | 1983-07-06 | Daido Steel Co Ltd | Alloy steel for hot working |
| CN1243169A (en) * | 1998-07-27 | 2000-02-02 | 通用电气公司 | Alloy steel |
| JP2000328193A (en) * | 1999-05-21 | 2000-11-28 | Kobe Steel Ltd | Non-refining steel for hot forging excellent in wear resistance |
| JP2000345300A (en) * | 1999-06-09 | 2000-12-12 | Nkk Corp | Sulfide dispersion strengthened steel |
| CN101466851A (en) * | 2006-06-16 | 2009-06-24 | 新日本制铁株式会社 | High intensity electromagnetic steel plate and method of manufacturing the same |
| CN103088199A (en) * | 2011-11-04 | 2013-05-08 | 上海重型机器厂有限公司 | Heat treatment method after forging for forged steel bearing roller used for large heavy plate mill |
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2013
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Patent Citations (6)
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| JPS58113352A (en) * | 1981-12-28 | 1983-07-06 | Daido Steel Co Ltd | Alloy steel for hot working |
| CN1243169A (en) * | 1998-07-27 | 2000-02-02 | 通用电气公司 | Alloy steel |
| JP2000328193A (en) * | 1999-05-21 | 2000-11-28 | Kobe Steel Ltd | Non-refining steel for hot forging excellent in wear resistance |
| JP2000345300A (en) * | 1999-06-09 | 2000-12-12 | Nkk Corp | Sulfide dispersion strengthened steel |
| CN101466851A (en) * | 2006-06-16 | 2009-06-24 | 新日本制铁株式会社 | High intensity electromagnetic steel plate and method of manufacturing the same |
| CN103088199A (en) * | 2011-11-04 | 2013-05-08 | 上海重型机器厂有限公司 | Heat treatment method after forging for forged steel bearing roller used for large heavy plate mill |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104213027A (en) * | 2014-08-05 | 2014-12-17 | 安徽荣达阀门有限公司 | Stainless steel material for pump valve and manufacturing method thereof |
| CN104550931A (en) * | 2014-12-25 | 2015-04-29 | 铜陵市经纬流体科技有限公司 | Scattering particle reinforced iron-based powder metallurgical valve and preparation method thereof |
| CN104550935A (en) * | 2014-12-25 | 2015-04-29 | 铜陵市经纬流体科技有限公司 | Powder metallurgy material for low-expansion valves and preparation method thereof |
| CN104588640A (en) * | 2014-12-25 | 2015-05-06 | 铜陵市经纬流体科技有限公司 | High-hardness ferrum-based powder metallurgy material for valve and preparing method thereof |
| CN104561753A (en) * | 2014-12-31 | 2015-04-29 | 铜陵市经纬流体科技有限公司 | Thermal strength type soft-seal brake valve body and preparing method thereof |
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