CN103643141A - High-hardness alloy steel material for pump valves and preparation method thereof - Google Patents
High-hardness alloy steel material for pump valves and preparation method thereof Download PDFInfo
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- CN103643141A CN103643141A CN201310558326.1A CN201310558326A CN103643141A CN 103643141 A CN103643141 A CN 103643141A CN 201310558326 A CN201310558326 A CN 201310558326A CN 103643141 A CN103643141 A CN 103643141A
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Abstract
A high-hardness alloy steel material for pump valves comprises the following chemical element components by mass percent: 0.9-1.4% of carbon, 0.8-1.1% of silicon, 2.1-2.4% of manganese, 0.6-0.8% of chromium, 0.03-0.05% of vanadium, 0.12-0.14% of molybdenum, 0.01-0.02% of lanthanum, 2.1-2.3% of magnesium, 0.04-0.06% of W, 0.12-0.16% of Tm, not more than 0.04% of S, not more than 0.04% of P, and the balance of iron. The low alloy steel provided by the invention not only has high hardness, but also has good toughness, good wear resistance, high thermal strength, low dynamic load gap sensitivity, and high fatigue strength, and also is good in casting performance, and high in casting yield. The method of the invention partly adopts scrap iron as a raw material; secondary refining is performed; heat treatment temperature after casting is controlled reasonably; raw materials are fed in batches; and thus the alloy is provided with more stable and uniform quality, and improved comprehensive mechanical properties.
Description
Technical field
The present invention relates to metallic substance preparation field, relate in particular to high hardness alloy steel and preparation method thereof for a kind of pump valve.
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 high hardness alloy steel and preparation method thereof for a kind of pump valve, this alloy material has advantages of high rigidity, shock-resistant, wear-resisting, hardening capacity is good.
Technical scheme of the present invention is as follows:
A pump valve high hardness alloy steel, is characterized in that: chemical element composition and mass percent thereof that it contains are: carbon 0.9-1.4, silicon 0.8-1.1, manganese 2.1-2.4, chromium 0.6-0.8, vanadium 0.03-0.05, molybdenum 0.12-0.14, lanthanum 0.01-0.02, magnesium 2.1-2.3, W0.04-0.06, Tm0.12-0.16, S≤0.04, P≤0.04, surplus are iron.
The production method of high hardness alloy steel for described pump valve, is characterized in that:
(1), preparing the pig iron and scrap iron originates as ferrous substrate in 1:1-4 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, magnesium; (2) chromium, vanadium, lanthanum; (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 220-240 ℃/h of speed, be warming up to 500-510 ℃, insulation 60-70 minute, with 220-240 ℃/h of speed, be warming up to 700-710 ℃ again, insulation 60-70 minute, with 170-180 ℃/h of speed, be warming up to 920-940 ℃ again, insulation 3-4 hour; With 150-160 ℃/h of speed, be cooled to 600-610 ℃ again, then be warming up to 700-710 ℃ with 220-240 ℃/h of speed, then be cooled to 480-500 ℃ with 150-160 ℃/h of speed, insulation 70-80 minute; With 150-160 ℃/h of speed, be cooled to 220-230 ℃ again, insulation 2-3 hour; With 220-240 ℃/h of speed, be warming up to 330-350 ℃ again, then be cooled to 200-210 ℃ with 150-160 ℃/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 30-34, aluminium hydroxide 2-3, calcite 4-5, zinc sulfate 1-2, medical stone 1-2, montmorillonite 1-2, jade 2-3, Tremoliteor Tremoliteasbestos 3-4, Calcium Fluoride (Fluorspan) 1-2, Sodium 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
Steel alloy provided by the invention not only has high hardness, but also has good toughness, wear resisting property is good, heat strong high, moving load notch sensitivity is little, also has higher fatigue strength; And good casting property, casting yield 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.Steel alloy of the present invention is applicable to the high parts of wear rate such as pump shaft, bearing, pump case, and not fragile, cost is low.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 pump valve high hardness alloy steel, chemical element composition and mass percent thereof that it contains are: carbon 0.9-1.4, silicon 0.8-1.1, manganese 2.1-2.4, chromium 0.6-0.8, vanadium 0.03-0.05, molybdenum 0.12-0.14, lanthanum 0.01-0.02, magnesium 2.1-2.3, W0.04-0.06, Tm0.12-0.16, S≤0.04, P≤0.04, surplus are iron.
Described pump valve by the production method of high hardness alloy steel is:
(1), preparing the pig iron and scrap iron originates as ferrous substrate in 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, magnesium; (2) chromium, vanadium, lanthanum; (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 230 ℃/h of speed, be warming up to 505 ℃, be incubated 65 minutes, then be warming up to 705 ℃ with 230 ℃/h of speed, be incubated 65 minutes, then be warming up to 930 ℃ with 175 ℃/h of speed, be incubated 3.5 hours; With 155 ℃/h of speed, be cooled to 605 ℃ again, then be warming up to 705 ℃ with 230 ℃/h of speed, then be cooled to 490 ℃ with 155 ℃/h of speed, be incubated 75 minutes; With 155 ℃/h of speed, be cooled to 225 ℃ again, be incubated 2.5 hours; With 230 ℃/h of speed, be warming up to 340 ℃ again, then be cooled to 205 ℃ with 155 ℃/h of speed, then be warming up to 530-550 ℃ 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 32, aluminium hydroxide 2.5, calcite 4.5, zinc sulfate 1.5, medical stone 1.5, montmorillonite 1.5, jade 2.6, Tremoliteor Tremoliteasbestos 3.5, Calcium Fluoride (Fluorspan) 1.5, Sodium 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 2.4%, 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 of high hardness alloy steel is: tensile strength 1376MPa, yield strength 973MPa, unit elongation 12.5%, relative reduction in area 22%, impact absorbing energy 49J, impelling strength 60J/cm2, hardness 295HB.
Claims (4)
1. a pump valve high hardness alloy steel, is characterized in that: chemical element composition and mass percent thereof that it contains are: carbon 0.9-1.4, silicon 0.8-1.1, manganese 2.1-2.4, chromium 0.6-0.8, vanadium 0.03-0.05, molybdenum 0.12-0.14, lanthanum 0.01-0.02, magnesium 2.1-2.3, W0.04-0.06, Tm0.12-0.16, S≤0.04, P≤0.04, surplus are iron.
2. the production method of high hardness alloy steel for pump valve according to claim 1, is characterized in that:
(1), preparing the pig iron and scrap iron originates as ferrous substrate in 1:1-4 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, magnesium; (2) chromium, vanadium, lanthanum; (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 high hardness alloy steel for pump valve according to claim 2, it is characterized in that: described casting postheat treatment is: first by room temperature, with 220-240 ℃/h of speed, be warming up to 500-510 ℃, insulation 60-70 minute, with 220-240 ℃/h of speed, be warming up to 700-710 ℃ again, insulation 60-70 minute, with 170-180 ℃/h of speed, be warming up to 920-940 ℃ again, insulation 3-4 hour; With 150-160 ℃/h of speed, be cooled to 600-610 ℃ again, then be warming up to 700-710 ℃ with 220-240 ℃/h of speed, then be cooled to 480-500 ℃ with 150-160 ℃/h of speed, insulation 70-80 minute; With 150-160 ℃/h of speed, be cooled to 220-230 ℃ again, insulation 2-3 hour; With 220-240 ℃/h of speed, be warming up to 330-350 ℃ again, then be cooled to 200-210 ℃ with 150-160 ℃/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 high hardness alloy steel for pump valve 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 30-34, aluminium hydroxide 2-3, calcite 4-5, zinc sulfate 1-2, medical stone 1-2, montmorillonite 1-2, jade 2-3, Tremoliteor Tremoliteasbestos 3-4, Calcium Fluoride (Fluorspan) 1-2, Sodium 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310558326.1A CN103643141A (en) | 2013-11-12 | 2013-11-12 | High-hardness alloy steel material for pump valves and preparation method thereof |
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| CN201310558326.1A CN103643141A (en) | 2013-11-12 | 2013-11-12 | High-hardness alloy steel material for pump valves and preparation method thereof |
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| CN103643141A true CN103643141A (en) | 2014-03-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105908083A (en) * | 2016-05-31 | 2016-08-31 | 安徽潜山轴承制造有限公司 | High hardness bearing steel and smelting process thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002146483A (en) * | 2000-11-09 | 2002-05-22 | Nippon Steel Corp | High strength austenitic stainless steel wire |
| CN1768155A (en) * | 2003-03-28 | 2006-05-03 | 株式会社神户制钢所 | Steel wire for high strength spring excellent in workability and high strength spring |
| CN1940112A (en) * | 2005-09-30 | 2007-04-04 | 宝山钢铁股份有限公司 | Low-alloy and superhigh carbon composite phase steel and its manufacture |
| CN102409138A (en) * | 2011-10-31 | 2012-04-11 | 芜湖山桥铁路器材有限公司 | Process for manufacturing alloy steel for rail frog |
| CN103146879A (en) * | 2013-02-04 | 2013-06-12 | 安徽省繁昌县皖南阀门铸造有限公司 | Steelmaking refining agent containing modified smectite powder and preparation method thereof |
-
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- 2013-11-12 CN CN201310558326.1A patent/CN103643141A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002146483A (en) * | 2000-11-09 | 2002-05-22 | Nippon Steel Corp | High strength austenitic stainless steel wire |
| CN1768155A (en) * | 2003-03-28 | 2006-05-03 | 株式会社神户制钢所 | Steel wire for high strength spring excellent in workability and high strength spring |
| CN1940112A (en) * | 2005-09-30 | 2007-04-04 | 宝山钢铁股份有限公司 | Low-alloy and superhigh carbon composite phase steel and its manufacture |
| CN102409138A (en) * | 2011-10-31 | 2012-04-11 | 芜湖山桥铁路器材有限公司 | Process for manufacturing alloy steel for rail frog |
| CN103146879A (en) * | 2013-02-04 | 2013-06-12 | 安徽省繁昌县皖南阀门铸造有限公司 | Steelmaking refining agent containing modified smectite powder and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105908083A (en) * | 2016-05-31 | 2016-08-31 | 安徽潜山轴承制造有限公司 | High hardness bearing steel and smelting process thereof |
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