CN103882308A - Alloy steel material for oil delivery pump valve seat and preparation method thereof - Google Patents
Alloy steel material for oil delivery pump valve seat and preparation method thereof Download PDFInfo
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- CN103882308A CN103882308A CN201410054421.2A CN201410054421A CN103882308A CN 103882308 A CN103882308 A CN 103882308A CN 201410054421 A CN201410054421 A CN 201410054421A CN 103882308 A CN103882308 A CN 103882308A
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- valve seat
- delivery pump
- pump valve
- oil delivery
- alloy steel
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Abstract
The invention provides an alloy steel material for an oil delivery pump valve seat. The alloy steel material comprises the following chemical element components in percentage by weight: 1.0-1.5% of C, 0.1-0.15% of S, 1.0-.1.3% of Mn, 2.2-2.5% of Ni, 0.1-0.2% of Mo, 0.6-0.9% of Co, 2.0-2.2% of W, 2.2-2.4% of Cu, 0.1-0.2% of La, 0.4-0.5% of Ce, 0.02-0.05% of Pr, less than or equal to 0.030% of P, less than or equal to 0.030% of S and the balance of iron. The material, which is prepared from a combination of raw materials such as rare earth metals by virtue of rational ratio and production process setting and rational feeding order setting, is high in strength, good in corrosion resistance, good in wear resistance, long in service life, and also capable of meeting the use requirements of a petroleum oil delivery pump valve seat; besides, waste iron is taken as one part of the raw materials so that the quality of the alloy is stable and uniform; a refining agent is added so that the porosity is reduced by 1-2 degrees.
Description
Technical field
The present invention relates to metallic substance preparation field, relate in particular to a kind of alloy steel material for oil delivery pump valve seat 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, can't meet the requirement of production in a lot of occasions, 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 alloy steel material for oil delivery pump valve seat and preparation method thereof, this alloy material has the focus of high hardness, erosion resistance, wear resistance.
Technical scheme of the present invention is as follows:
For an alloy steel material for oil delivery pump valve seat, it is characterized in that: chemical element composition and mass percent thereof that it contains are: C1.0-1.5, silicon 0.1-0.15, manganese 1.0-1.3, Ni2.2-2.5, Mo0.1-0.2, Co0.6-0.9, W2.0-2.2, Cu2.2-2.4, La0.1-0.2, Ce0.4-0.5, Pr0.02-0.05, P≤0.030, S≤0.030, surplus are iron.
The production method of the described alloy steel material for oil delivery pump valve seat, 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, Ni, La; (2) manganese, Mo, Ce; (3) Co, W; (4) other remaining component; The each batch of timed interval of dropping into element is 8-10 minute, after feeding intake, stirs.
Described casting postheat treatment is: be first warming up to 915-925 DEG C by room temperature with 200-230 DEG C/h of speed, insulation 3-4 hour; Be cooled to 620-630 DEG C with 140-160 DEG C/h of speed again, insulation 30-60 minute; Be cooled to 320-340 DEG C with 100-120 DEG C/h of speed again, insulation 2-3 hour; Be warming up to 520-540 DEG C with 150-170 DEG C/h of speed again, insulation 2-3 hour, takes out air cooling and get final product.
Described refining agent is made up of the raw material of following weight part: instrument comminuted steel shot 3-4, attapulgite 100-120, unslaked lime 2-3, nanometer jade powder 3-4, montmorillonite powder 1-2, perlite 95-110, BaCO3 3-4, Sodium Silicofluoride 4-5, Calcium Fluoride (Fluorspan) 2-3; 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 DEG C, calcine 3-4 hour, cooling after, be ground into again 150-250 order powder, obtain final product.
Beneficial effect of the present invention
The present invention, by using the material combination such as rare earth metal, rationally arranges proportioning and production technique, and input order is rationally set, and the prepared strength of materials is high, corrosion resistance good, wear resistance is good, and long service life can meet the service requirements of oil oil delivery pump valve seat; 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
For an alloy steel material for oil delivery pump valve seat, chemical element composition and mass percent thereof that it contains are: C1.0-1.5, silicon 0.1-0.15, manganese 1.0-1.3, Ni2.2-2.5, Mo0.1-0.2, Co0.6-0.9, W2.0-2.2, Cu2.2-2.4, La0.1-0.2, Ce0.4-0.5, Pr0.02-0.05, P≤0.030, S≤0.030, surplus are iron.
The production method of the described alloy steel material for oil delivery pump valve seat 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, Ni, La; (2) manganese, Mo, Ce; (3) Co, W; (4) other remaining component; The each batch of timed interval of dropping into element is 9 minutes, after feeding intake, stirs.
Described casting postheat treatment is: be first warming up to 920 DEG C by room temperature with 210 DEG C/h of speed, be incubated 3.5 hours; Be cooled to 625 DEG C with 150 DEG C/h of speed again, be incubated 46 minutes; Be cooled to 330 DEG C with 110 DEG C/h of speed again, be incubated 2.5 hours; To be warming up to 530 DEG C with 160 DEG C/h of speed again, be incubated 2.4 hours again, take out air cooling.
Described refining agent by following weight part (kilogram) raw material make: described refining agent by following weight part (kilogram) raw material make: instrument comminuted steel shot 3, attapulgite 100-, unslaked lime 2, nanometer jade powder 3, montmorillonite powder 2, perlite 95, BaCO3 4, Sodium Silicofluoride 4, Calcium Fluoride (Fluorspan) 3; 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 DEG C, calcine 3-4 hour, cooling after, be ground into again 150-250 order powder, obtain final product.
The present invention for the mechanical property of the alloy steel material of oil delivery pump valve seat is: tensile strength 1188MPa, yield strength 976MPa, unit elongation 14%, relative reduction in area 23%, impact absorbing energy 53J, impelling strength 66J/cm2, hardness 293HB.
Claims (4)
1. for an alloy steel material for oil delivery pump valve seat, it is characterized in that: chemical element composition and mass percent thereof that it contains are: C1.0-1.5, silicon 0.1-0.15, manganese 1.0-1.3, Ni2.2-2.5, Mo0.1-0.2, Co0.6-0.9, W2.0-2.2, Cu2.2-2.4, La0.1-0.2, Ce0.4-0.5, Pr0.02-0.05, P≤0.030, S≤0.030, surplus are iron.
2. the production method of the alloy steel material for oil delivery pump valve seat 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, Ni, La; (2) manganese, Mo, Ce; (3) Co, W; (4) other remaining component; The each batch of timed interval of dropping into element is 8-10 minute, after feeding intake, stirs.
3. the production method of the alloy steel material for oil delivery pump valve seat according to claim 2, is characterized in that: described casting postheat treatment is: be first warming up to 915-925 DEG C by room temperature with 200-230 DEG C/h of speed, insulation 3-4 hour; Be cooled to 620-630 DEG C with 140-160 DEG C/h of speed again, insulation 30-60 minute; Be cooled to 320-340 DEG C with 100-120 DEG C/h of speed again, insulation 2-3 hour; Be warming up to 520-540 DEG C with 150-170 DEG C/h of speed again, insulation 2-3 hour, takes out air cooling and get final product.
4. the production method of the alloy steel material for oil delivery pump valve seat according to claim 2, is characterized in that: described refining agent is made up of the raw material of following weight part: instrument comminuted steel shot 3-4, attapulgite 100-120, unslaked lime 2-3, nanometer jade powder 3-4, montmorillonite powder 1-2, perlite 95-110, BaCO3 3-4, Sodium Silicofluoride 4-5, Calcium Fluoride (Fluorspan) 2-3; 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 DEG C, calcine 3-4 hour, cooling after, be ground into again 150-250 order powder, obtain final product.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410054421.2A CN103882308A (en) | 2014-02-18 | 2014-02-18 | Alloy steel material for oil delivery pump valve seat and preparation method thereof |
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| CN201410054421.2A CN103882308A (en) | 2014-02-18 | 2014-02-18 | Alloy steel material for oil delivery pump valve seat and preparation method thereof |
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| CN103882308A true CN103882308A (en) | 2014-06-25 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03258445A (en) * | 1990-03-09 | 1991-11-18 | Kawasaki Steel Corp | Production of raw material for bearing having long service life and high strength |
| JPH03271319A (en) * | 1990-03-20 | 1991-12-03 | Kawasaki Steel Corp | Production of bearing steel having long service life and high strength |
| CN101981302A (en) * | 2009-03-12 | 2011-02-23 | 新日本制铁株式会社 | Process for producing common rail, and common rail |
| CN102517422A (en) * | 2011-12-30 | 2012-06-27 | 浙江铭德新材科技有限公司 | Slag melting agent of refining furnace of molten steel and production method thereof |
| JP5186769B2 (en) * | 2006-02-13 | 2013-04-24 | 新日鐵住金株式会社 | Sulfuric acid dew-point corrosion steel |
| CN103397269A (en) * | 2013-07-01 | 2013-11-20 | 安徽三联泵业股份有限公司 | Low-cost and high-strength wear-resistant cast steel and preparation method thereof |
| CN103451574A (en) * | 2013-08-07 | 2013-12-18 | 安徽蓝博旺机械集团合诚机械有限公司 | Cast steel material for fixed mast of forklift and preparation method thereof |
-
2014
- 2014-02-18 CN CN201410054421.2A patent/CN103882308A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03258445A (en) * | 1990-03-09 | 1991-11-18 | Kawasaki Steel Corp | Production of raw material for bearing having long service life and high strength |
| JPH03271319A (en) * | 1990-03-20 | 1991-12-03 | Kawasaki Steel Corp | Production of bearing steel having long service life and high strength |
| JP5186769B2 (en) * | 2006-02-13 | 2013-04-24 | 新日鐵住金株式会社 | Sulfuric acid dew-point corrosion steel |
| CN101981302A (en) * | 2009-03-12 | 2011-02-23 | 新日本制铁株式会社 | Process for producing common rail, and common rail |
| CN102517422A (en) * | 2011-12-30 | 2012-06-27 | 浙江铭德新材科技有限公司 | Slag melting agent of refining furnace of molten steel and production method thereof |
| CN103397269A (en) * | 2013-07-01 | 2013-11-20 | 安徽三联泵业股份有限公司 | Low-cost and high-strength wear-resistant cast steel and preparation method thereof |
| CN103451574A (en) * | 2013-08-07 | 2013-12-18 | 安徽蓝博旺机械集团合诚机械有限公司 | Cast steel material for fixed mast of forklift and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 储满生等: "《钢铁冶金原燃料及辅助材料》", 31 January 2010, article "LF精炼渣" * |
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Application publication date: 20140625 |