CN104213048A - Alloy steel material for water hydraulic valve and manufacturing method thereof - Google Patents
Alloy steel material for water hydraulic valve and manufacturing method thereof Download PDFInfo
- Publication number
- CN104213048A CN104213048A CN201410380982.1A CN201410380982A CN104213048A CN 104213048 A CN104213048 A CN 104213048A CN 201410380982 A CN201410380982 A CN 201410380982A CN 104213048 A CN104213048 A CN 104213048A
- Authority
- CN
- China
- Prior art keywords
- percent
- alloy steel
- steel material
- hydraulic valve
- ramp
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
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
- Treatment Of Steel In Its Molten State (AREA)
Abstract
Disclosed is an alloy steel material for a water hydraulic valve. Chemical elementary compositions of the material comprise, by mass, 0.2 percent to 0.4 percent of carbon, 1.4 percent to 1.6 percent of silicon, 1.1 percent to 1.3 percent of manganese, 3.7 percent to 4.1 percent of chromium, S smaller than or equal to 0.05 percent, P smaller than or equal to 0.05 percent, 0.04 percent to 0.07 percent of W and the balance iron. According to the alloy steel material, the raw material ratio is reasonable, raw materials are thrown by several times, the casted heat treatment temperature is reasonably controlled, and formed alloy has the advantages of being resistant to corrosion, high in hardness, strength and toughness, not prone to embrittlement when being impacted, and capable of reducing the production cost. Part of scrap iron is used as the raw materials, secondary refining is carried out on the raw materials, and the quality is more stable and uniform. The material is widely applied to water hydraulic valves of various pumps, the service life is long, and safety can be achieved. Refining agents are used for the casting production, the yield rate is obviously improved, particularly, the porosity degree in a casting is reduced by one to two, and the level of non-oxidation occluded foreign substances is about second.
Description
Technical field
The present invention relates to field of metal preparation, particularly relate to a kind of hydraulic valve alloy steel material 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 of current pump valve has varied, technology has very much progress, but still have a lot of problem to exist, as wear resistance, hardness, rustless property, corrosion resistance nature, high and low temperature resistance, fragility, toughness etc., the requirement of production can't be met in a lot of occasion, 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 hydraulic valve alloy steel material and preparation method thereof, this alloy material has high rigidity, high, the corrosion resistant advantage of yield strength.
Technical scheme of the present invention is as follows:
A kind of hydraulic valve alloy steel material, is characterized in that: the chemical element composition that it contains and mass percent thereof are: carbon 0.2-0.4, silicon 1.4-1.6, manganese 1.1-1.3, chromium 3.7-4.1, S≤0.05, P≤0.05, W0.04-0.07, surplus are iron.
The production method of described hydraulic valve alloy steel material, is characterized in that:
(1), the preparation pig iron and scrap iron are originated as ferrous substrate in 1:0.5-2 ratio, the pig iron is added 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 adjust chemical element component content to qualified, casting, casting postheat treatment etc.;
(2) lot sequence, dropping into alloying element in alloying process in stove is: (1) silicon, manganese; (2) chromium, W; The each batch of timed interval of dropping into element is 15-17, stirs after feeding intake.
Described casting postheat treatment is: first by room temperature with 200-210 DEG C/h of ramp to 640-650 DEG C, then be cooled to 510-520 DEG C with 130-140 DEG C/h of speed, then with 170-190 DEG C/h of ramp to 940-950 DEG C, insulation 3-4 hour; 600-620 DEG C is cooled to again, insulation 50-60 minute with 130-140 DEG C/h of speed, then with 170-190 DEG C/h of ramp to 720-730 DEG C, then be cooled to 520-530 DEG C with 130-140 DEG C/h of speed, insulation 50-70 minute; 320-330 DEG C is cooled to again, insulation 2-3 hour with 120-130 DEG C/h of speed; Again with 170-190 DEG C/h of ramp to 440-450 DEG C, then be cooled to 220-230 DEG C with 130-140 DEG C/h of speed, then with 170-190 DEG C/h of ramp to 540-550 DEG C, 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, kaolin 2-3, aluminium sesquioxide 1-2, magnesium oxide 4-5, montmorillonite 1-2, Zirconium tetrafluoride 1-2, alum 2-3, sodium alginate 2-3, tripoly phosphate sodium STPP 1-2, lapis amiridis 2-3, copper sulfate 1-2, potassium silicofluoride 2-3, SODIUMNITRATE 2-3; Each raw material mixes by preparation method, 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 DEG C, 3-4 hour is calcined, after cooling, be ground into 150-250 order powder again, obtain final product.
Beneficial effect of the present invention
Reasonable raw material proportioning of the present invention, by gradation throwing raw materials, conservative control casting postheat treatment temperature, the alloy of formation have corrosion-resistant, high rigidity, intensity are high, toughness is high, not easily embrittlement when being hit, and can reduce the low feature of production cost; Use part scrap iron as raw material, and through secondary refining, make quality more stable uniform.The present invention is widely used in the hydraulic control valve of various pump, long service life, safety.Refining agent of the present invention is used for Foundry Production, significantly improves yield rate, and the degree of porosity particularly in foundry goods reduces 1-2 degree, and can not produce pore at cast(ing) surface, trapped oxide also obviously reduces, and oxide inclusion is at about 2 grades.
Embodiment
A kind of hydraulic valve alloy steel material, the chemical element composition that it contains and mass percent thereof are: carbon 0.2-0.4, silicon 1.4-1.6, manganese 1.1-1.3, chromium 3.7-4.1, S≤0.05, P≤0.05, W0.04-0.07, surplus are iron.
The production method of described hydraulic valve alloy steel material, is characterized in that:
(1), the preparation pig iron and scrap iron are originated as ferrous substrate in 1:1.5 ratio, the pig iron is added 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 adjust chemical element component content to qualified, casting, casting postheat treatment etc.;
(2) lot sequence, dropping into alloying element in alloying process in stove is: (1) silicon, manganese; (2) chromium, W; The each batch of timed interval of dropping into element is 16, stirs after feeding intake.
Described casting postheat treatment is: first by room temperature with 205 DEG C/h of ramp to 645 DEG C, then be cooled to 515 DEG C with 135 DEG C/h of speed, then with 180 DEG C/h of ramp to 945 DEG C, be incubated 3.5 hours; Be cooled to 610 DEG C with 135 DEG C/h of speed again, be incubated 55 minutes, then with 180 DEG C/h of ramp to 725 DEG C, then be cooled to 525 DEG C with 135 DEG C/h of speed, be incubated 60 minutes; Be cooled to 325 DEG C with 125 DEG C/h of speed again, be incubated 2.5 hours; Again with 180 DEG C/h of ramp to 445 DEG C, then be cooled to 225 DEG C with 135 DEG C/h of speed, then with 180 DEG C/h of ramp to 545 DEG C, be incubated 2.5 hours, take out air cooling and get final product.
Described refining agent is made up of the raw material of following weight part (kilogram): instrument comminuted steel shot 3.5, kaolin 2.5, aluminium sesquioxide 1.5, magnesium oxide 4.5, montmorillonite 1.5, Zirconium tetrafluoride 1.5, alum 2.5, sodium alginate 2.5, tripoly phosphate sodium STPP 1.5, lapis amiridis 2.5, copper sulfate 1.5, potassium silicofluoride 2.5, SODIUMNITRATE 2.5; Each raw material mixes by preparation method, 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%, the nano-carbon powder of 1.5%, after mixing, under 12Mpa, be pressed into base, then, calcine 3.5 hours at 920 DEG C, after cooling, then be ground into 210 order powder, obtain final product.
The mechanical property of hydraulic valve alloy steel material of the present invention is: tensile strength 1327MPa, yield strength 972.4MPa, unit elongation 13.1%, relative reduction in area 23.3%, impact absorbing energy 50.8J, impelling strength 63.2J/cm2, hardness 271HB.
Claims (4)
1. a hydraulic valve alloy steel material, is characterized in that: the chemical element composition that it contains and mass percent thereof are: carbon 0.2-0.4, silicon 1.4-1.6, manganese 1.1-1.3, chromium 3.7-4.1, S≤0.05, P≤0.05, W0.04-0.07, surplus are iron.
2. the production method of hydraulic valve alloy steel material according to claim 1, is characterized in that:
(1), the preparation pig iron and scrap iron are originated as ferrous substrate in 1:0.5-2 ratio, the pig iron is added 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 adjust chemical element component content to qualified, casting, casting postheat treatment etc.;
(2) lot sequence, dropping into alloying element in alloying process in stove is: (1) silicon, manganese; (2) chromium, W; The each batch of timed interval of dropping into element is 15-17, stirs after feeding intake.
3. the production method of hydraulic valve alloy steel material according to claim 2, it is characterized in that: described casting postheat treatment is: first by room temperature with 200-210 DEG C/h of ramp to 640-650 DEG C, 510-520 DEG C is cooled to again with 130-140 DEG C/h of speed, again with 170-190 DEG C/h of ramp to 940-950 DEG C, insulation 3-4 hour; 600-620 DEG C is cooled to again, insulation 50-60 minute with 130-140 DEG C/h of speed, then with 170-190 DEG C/h of ramp to 720-730 DEG C, then be cooled to 520-530 DEG C with 130-140 DEG C/h of speed, insulation 50-70 minute; 320-330 DEG C is cooled to again, insulation 2-3 hour with 120-130 DEG C/h of speed; Again with 170-190 DEG C/h of ramp to 440-450 DEG C, then be cooled to 220-230 DEG C with 130-140 DEG C/h of speed, then with 170-190 DEG C/h of ramp to 540-550 DEG C, insulation 2-3 hour, takes out air cooling and get final product.
4. the production method of hydraulic valve alloy steel material 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, kaolin 2-3, aluminium sesquioxide 1-2, magnesium oxide 4-5, montmorillonite 1-2, Zirconium tetrafluoride 1-2, alum 2-3, sodium alginate 2-3, tripoly phosphate sodium STPP 1-2, lapis amiridis 2-3, copper sulfate 1-2, potassium silicofluoride 2-3, SODIUMNITRATE 2-3; Each raw material mixes by preparation method, 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 DEG C, 3-4 hour is calcined, after cooling, be ground into 150-250 order powder again, obtain final product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410380982.1A CN104213048A (en) | 2014-08-05 | 2014-08-05 | Alloy steel material for water hydraulic valve and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410380982.1A CN104213048A (en) | 2014-08-05 | 2014-08-05 | Alloy steel material for water hydraulic valve and manufacturing method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104213048A true CN104213048A (en) | 2014-12-17 |
Family
ID=52094949
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410380982.1A Pending CN104213048A (en) | 2014-08-05 | 2014-08-05 | Alloy steel material for water hydraulic valve and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104213048A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1714165A (en) * | 2002-11-19 | 2005-12-28 | 工业钢克鲁梭公司 | Weldable steel building component and method for making same |
| CN103667943A (en) * | 2013-11-14 | 2014-03-26 | 安徽荣达阀门有限公司 | Scandium-containing wear-resistant low-carbon steel material for pump impellers and preparation method thereof |
-
2014
- 2014-08-05 CN CN201410380982.1A patent/CN104213048A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1714165A (en) * | 2002-11-19 | 2005-12-28 | 工业钢克鲁梭公司 | Weldable steel building component and method for making same |
| CN103667943A (en) * | 2013-11-14 | 2014-03-26 | 安徽荣达阀门有限公司 | Scandium-containing wear-resistant low-carbon steel material for pump impellers and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103695792B (en) | A kind of High carbon alloy steel wear-resistance valve material and preparation method thereof | |
| CN103602911B (en) | A kind of heat resistant and wear resistant steel alloy lining material and preparation method thereof | |
| CN103614622A (en) | A low-temperature-resistant alloy material used for pump valve and a preparation method thereof | |
| CN103667982A (en) | Corrosion-resistant, wear-resistant and high-temperature-resistant alloy steel material for pump valve and preparation method thereof | |
| CN104213042A (en) | Alloy steel material for pump shell and manufacturing method thereof | |
| CN103882340A (en) | Rare-earth alloy steel material and preparation method thereof | |
| CN103628001A (en) | Alloy steel material for corrosion-resistant pump valve and preparation method thereof | |
| CN103627967A (en) | Wear-resistant alloy steel material for pump casing and preparation method thereof | |
| CN103667890A (en) | Alloy steel material for pump shaft and preparation method thereof | |
| CN104213050A (en) | Manganese steel material for pump shaft and preparation method thereof | |
| CN103667945B (en) | A kind of Wear-resistant high-manganese steel liner plate material and preparation method thereof | |
| CN103667988B (en) | A kind of alloy steel material for transferpump pipeline and preparation method thereof | |
| CN104213021A (en) | Wear resistant high-carbon steel pump valve material and preparation method thereof | |
| CN104213027A (en) | Stainless steel material for pump valve and manufacturing method thereof | |
| CN103667942B (en) | A kind of wear-resisting pump shaft mild steel material and preparation method thereof | |
| CN104213048A (en) | Alloy steel material for water hydraulic valve and manufacturing method thereof | |
| CN104947004A (en) | Corrosion-resistant steel and processing technique thereof | |
| CN104213049A (en) | Alloy steel material of conveying pipe of boiler water feeding pump and preparation method thereof | |
| CN103614646A (en) | Alloy steel material used for concrete pump conveyer pipes and preparation method of the alloy steel material | |
| CN103643140A (en) | Highly wear-resistant pump shaft medium carbon steel material and preparation method thereof | |
| CN103602912B (en) | A kind of abrasion-resistant alloy steel lining plate material and preparation method thereof | |
| CN104213046A (en) | Steel material for hydraulic valve and preparing method of steel material | |
| CN104213045A (en) | Alloy steel material for high-temperature operation pump valve and preparing method of alloy steel material | |
| CN104213047A (en) | Alloy steel material for concrete pump truck tank body and preparing method of alloy steel material | |
| CN103643141A (en) | High-hardness alloy steel material for pump valves and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20141217 |
|
| RJ01 | Rejection of invention patent application after publication |