CN102994890A - Casting method of valve body of anti-explosion valve - Google Patents
Casting method of valve body of anti-explosion valve Download PDFInfo
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- CN102994890A CN102994890A CN2012103729527A CN201210372952A CN102994890A CN 102994890 A CN102994890 A CN 102994890A CN 2012103729527 A CN2012103729527 A CN 2012103729527A CN 201210372952 A CN201210372952 A CN 201210372952A CN 102994890 A CN102994890 A CN 102994890A
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- valve body
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- empty
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- 238000004880 explosion Methods 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000005266 casting Methods 0.000 title claims abstract description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 8
- 238000010438 heat treatment Methods 0.000 claims abstract description 5
- 239000012535 impurity Substances 0.000 claims abstract description 4
- 229910052742 iron Inorganic materials 0.000 claims abstract description 4
- 239000000126 substance Substances 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 238000010791 quenching Methods 0.000 claims description 9
- 238000009413 insulation Methods 0.000 claims description 6
- 230000000171 quenching effect Effects 0.000 claims description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 5
- 230000036760 body temperature Effects 0.000 claims description 3
- 238000004382 potting Methods 0.000 claims description 3
- 239000004576 sand Substances 0.000 claims description 3
- 239000006188 syrup Substances 0.000 claims description 3
- 235000020357 syrup Nutrition 0.000 claims description 3
- 238000005496 tempering Methods 0.000 claims description 3
- 238000009692 water atomization Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 239000000463 material Substances 0.000 abstract description 5
- 238000001816 cooling Methods 0.000 abstract 4
- 238000004663 powder metallurgy Methods 0.000 abstract 1
- 239000012530 fluid Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 229910001338 liquidmetal Inorganic materials 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000007115 recruitment Effects 0.000 description 1
Abstract
The invention discloses a casting method of a valve body of an anti-explosion valve. The method comprises the following steps: pouring the valve body and controlling the weight percentages of chemical components in the valve body as follows: less than or equal to 2.32% but greater than or equal to 4.15% of C, less than or equal to 0.40% but greater than or equal to 1.40% of Si, less than or equal to 0.30% but greater than or equal to 1.30% of Mn, less than or equal to 0.010% but greater than or equal to 0.030% of P, less than or equal to 0.010% but greater than or equal to 0.030% of S, less than or equal to 1.50% but greater than or equal to 2.50% of Cr, less than or equal to trace but greater than or equal to 0.0018% of B, and the balance of iron and avoidless impurities; cooling the poured and moulded valve body to 350 DEG C, then heating to 670-760 DEG C, insulating for 3-5h, cooling the furnace to 300 DEG C, insulating for 4h, then heating to 650-760 DEG C, insulating for 17h, cooling to 400 DEG C at 50 DEG C/h, and then cooling to 140 DEG C at 20 DEG C/h. According to the powder metallurgy material and manufacturing process provided by the invention, higher production continuity is obtained and the material utilization rate is high. The method provided by the invention is suitable for production in a large scale, and the cost is lowered.
Description
Technical field
The present invention relates to a kind of preparation method of explosion trap, specifically belong to a kind of explosion trap valve body castmethod.
Background technology
Explosion trap is the function unit in the fluid delivery system, has the functions such as shunting or overflow pressure relief.The valve that is used for fluid control system, from the simplest stopping valve to very complicated robot control system(RCS) used various valves, its kind and specification are quite various.Valve can be used for controlling flowing of all kinds fluids such as air, water, steam, various corrosive medium, mud, oil product, liquid metal and radiating medium.Not only the material manufacture craft is poor for explosion trap at present, and is suitable for producing in enormous quantities, needs valve body is carried out a small amount of ground finish before assembling is used.
Summary of the invention
Technical problem to be solved by this invention is for explosion trap Technology present situation, and a kind of explosion trap valve body castmethod that a kind of production efficiency is high, manufacturing cost is lower that provides.
The technical solution used in the present invention is as follows:
A kind of explosion trap valve body castmethod includes following steps:
A, cast valve body, chemical component weight per-cent is in the application valve body: 2.32%≤C≤4.15%, 0.40%≤Si≤1.40%, 0.30%≤Mn≤1.30%, 0.010%≤P≤0.030%, 0.010%≤S≤0.030%.1.50%≤Cr≤2.50%, trace≤B≤0.0018%, surplus is iron and inevitable impurity; The valve body temperature of casting is down to 350 ℃, reheats to 670-760 ℃, is incubated 3-5 hour, and stove is chilled to 300 ℃, is incubated 4 hours, reheats to 650-760 ℃, is incubated 17 hours, is cooled to 400 ℃ with 50 ℃/hour, again with 20 ℃/hour, is cooled to 140 ℃;
b, in the valve body sand mold, pour into a mould potting syrup by cast gate, cooled and solidified, steam treatment namely gets the explosion trap valve body after taking out, described steam treatment is the water atomization steam treatment, the treatment time is 4-5 hour, temperature is 550-650 ℃;
C, quench treatment: the explosion trap valve body sent into be heated to 850-890 ℃ in the heat treatment furnace, and insulation 2-3 hour; Then cool off with quenching oil;
D, temper: the explosion trap valve body after will quenching is sent into and is heated to 300-400 ℃ in the tempering stove, insulation 50-70min;
E, bonderizing, be 180-200 ℃ with workpiece at showing tremendous enthusiasm closure temperature at normal temperatures, the employing pH value is 8 surface conditioner processing 1min, after dripping empty 1-2min, adopt phosphorization agent to process 15-20min, after dripping empty 1-2min, adopt clear water to clean 1-2min again, after dripping again empty 1-2min, process 0.5-1min workpiece is placed 78-100 ℃ hot water.
Bonderizing, be 190 ℃ with workpiece at showing tremendous enthusiasm closure temperature at normal temperatures, the employing pH value is 8 surface conditioner processing 1min, after dripping empty 1.5min, adopt phosphorization agent to process 17min, after dripping empty 1.5min, adopt clear water to clean 1.5min again, after dripping again empty 1.5min, process 0.7min workpiece is placed 90 ℃ hot water.
Compared with prior art, the invention has the advantages that:
The present invention passes through technique scheme, one-piece construction is scientific and reasonable, the corresponding energy consumption that reduced has reduced materials consumption and cost and has dropped into, and working accuracy improves greatly, compared with prior art material use efficiency is brought up to more than 90% by present 65%, power consumption reduces about 70%, and recruitment reduces 3/4ths, and a machine tool two people operate the malleable workpiece of split run more than 550, improve about 4 times of work efficiency, the positively effect highly significant of generation.
It is as follows that mechanical property of the present invention detects data:
Tensile strength sigma b (MPa): 〉=1080 (110)
Yield strength σ s (MPa): 〉=930 (95)
Elongation δ 5 (%): 〉=12
Relative reduction in area ψ (%): 〉=55
Impact energy Ak v (J): 〉=65
Notched bar impact strength α kv (J/cm2): 〉=78 (8)
Hardness :≤223HB
Embodiment
A kind of explosion trap valve body castmethod includes following steps:
A, cast valve body, chemical component weight per-cent is in the application valve body: 2.32%≤C≤4.15%, 0.40%≤Si≤1.40%, 0.30%≤Mn≤1.30%, 0.010%≤P≤0.030%, 0.010%≤S≤0.030%.1.50%≤Cr≤2.50%, trace≤B≤0.0018%, surplus is iron and inevitable impurity; The valve body temperature of casting is down to 350 ℃, reheats to 670-760 ℃, is incubated 3-5 hour, and stove is chilled to 300 ℃, is incubated 4 hours, reheats to 650-760 ℃, is incubated 17 hours, is cooled to 400 ℃ with 50 ℃/hour, again with 20 ℃/hour, is cooled to 140 ℃;
b, in the valve body sand mold, pour into a mould potting syrup by cast gate, cooled and solidified, steam treatment namely gets the explosion trap valve body after taking out, described steam treatment is the water atomization steam treatment, the treatment time is 4-5 hour, temperature is 550-650 ℃;
C, quench treatment: the explosion trap valve body sent into be heated to 850-890 ℃ in the heat treatment furnace, and insulation 2-3 hour; Then cool off with quenching oil;
D, temper: the explosion trap valve body after will quenching is sent into and is heated to 300-400 ℃ in the tempering stove, insulation 50-70min;
E, bonderizing, be 190 ℃ with workpiece at showing tremendous enthusiasm closure temperature at normal temperatures, the employing pH value is 8 surface conditioner processing 1min, after dripping empty 1.5min, adopt phosphorization agent to process 17min, after dripping empty 1.5min, adopt clear water to clean 1.5min again, after dripping again empty 1.5min, process 0.7min workpiece is placed 90 ℃ hot water.
Claims (2)
1. explosion trap valve body castmethod is characterized in that including following steps:
A, cast valve body, chemical component weight per-cent is in the application valve body: 2.32%≤C≤4.15%, 0.40%≤Si≤1.40%, 0.30%≤Mn≤1.30%, 0.010%≤P≤0.030%, 0.010%≤S≤0.030%;
1.50%≤Cr≤2.50%, trace≤B≤0.0018%, surplus is iron and inevitable impurity; The valve body temperature of casting is down to 350 ℃, reheats to 670-760 ℃, is incubated 3-5 hour, and stove is chilled to 300 ℃, is incubated 4 hours, reheats to 650-760 ℃, is incubated 17 hours, is cooled to 400 ℃ with 50 ℃/hour, again with 20 ℃/hour, is cooled to 140 ℃;
b, in the valve body sand mold, pour into a mould potting syrup by cast gate, cooled and solidified, steam treatment namely gets the explosion trap valve body after taking out, described steam treatment is the water atomization steam treatment, the treatment time is 4-5 hour, temperature is 550-650 ℃;
C, quench treatment: the explosion trap valve body sent into be heated to 850-890 ℃ in the heat treatment furnace, and insulation 2-3 hour; Then cool off with quenching oil;
D, temper: the explosion trap valve body after will quenching is sent into and is heated to 300-400 ℃ in the tempering stove, insulation 50-70min;
E, bonderizing, be 180-200 ℃ with workpiece at showing tremendous enthusiasm closure temperature at normal temperatures, the employing pH value is 8 surface conditioner processing 1min, after dripping empty 1-2min, adopt phosphorization agent to process 15-20min, after dripping empty 1-2min, adopt clear water to clean 1-2min again, after dripping again empty 1-2min, process 0.5-1min workpiece is placed 78-100 ℃ hot water.
2. a kind of explosion trap valve body castmethod according to claim 1 is characterized in that: described
Bonderizing, be 190 ℃ with workpiece at showing tremendous enthusiasm closure temperature at normal temperatures, the employing pH value is 8 surface conditioner processing 1min, after dripping empty 1.5min, adopt phosphorization agent to process 17min, after dripping empty 1.5min, adopt clear water to clean 1.5min again, after dripping again empty 1.5min, process 0.7min workpiece is placed 90 ℃ hot water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210372952.7A CN102994890B (en) | 2012-09-29 | 2012-09-29 | A kind of valve body of anti-explosion valve castmethod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210372952.7A CN102994890B (en) | 2012-09-29 | 2012-09-29 | A kind of valve body of anti-explosion valve castmethod |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102994890A true CN102994890A (en) | 2013-03-27 |
| CN102994890B CN102994890B (en) | 2016-03-02 |
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| CN201210372952.7A Active CN102994890B (en) | 2012-09-29 | 2012-09-29 | A kind of valve body of anti-explosion valve castmethod |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104532115A (en) * | 2014-12-31 | 2015-04-22 | 铜陵市经纬流体科技有限公司 | Hydrogen-embrittlement-resistant high-strength soft sealing sluice valve body and preparation method thereof |
| CN106591693A (en) * | 2016-12-20 | 2017-04-26 | 铜陵市经纬流体科技有限公司 | High-sealing type valve rod for gate valve |
| CN106678408A (en) * | 2016-12-20 | 2017-05-17 | 铜陵市经纬流体科技有限公司 | Check valve body suitable for acid solutions |
| CN114273617A (en) * | 2021-12-24 | 2022-04-05 | 福建贝得阀门有限公司 | Rapid casting molding process for valve body of soft and hard sealing ball valve |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4103866A (en) * | 1977-01-10 | 1978-08-01 | Milwaukee Valve Company, Inc. | Butterfly valve |
| JPH09511020A (en) * | 1994-03-25 | 1997-11-04 | ブリコ・エンジニアリング・リミテッド | Sintered product manufacturing method |
| CN101081432A (en) * | 2007-06-04 | 2007-12-05 | 天乾（无锡）科技有限公司 | Method for founding main regulation valve body of steam turbine |
| CN101476085A (en) * | 2009-01-08 | 2009-07-08 | 辽宁福鞍铸业集团有限公司 | Method for foundry production of ultra-supercritical main steam control valve for nuclear power unit |
| CN101618508A (en) * | 2009-07-30 | 2010-01-06 | 扬州东升汽车零部件制造有限公司 | Method for producing vehicle-used stabilizer bar with high corrosion resistance |
| CN101745606A (en) * | 2009-12-29 | 2010-06-23 | 上海应用技术学院 | Casting technology method for high-rigidity gray iron hydraulic valve body |
| US20120160376A1 (en) * | 2010-12-28 | 2012-06-28 | The Japan Steel Works, Ltd. | Heat resistant cast steel, manufacturing method thereof, cast parts of steam turbine, and manufacturing method of cast parts of steam turbine |
-
2012
- 2012-09-29 CN CN201210372952.7A patent/CN102994890B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4103866A (en) * | 1977-01-10 | 1978-08-01 | Milwaukee Valve Company, Inc. | Butterfly valve |
| JPH09511020A (en) * | 1994-03-25 | 1997-11-04 | ブリコ・エンジニアリング・リミテッド | Sintered product manufacturing method |
| CN101081432A (en) * | 2007-06-04 | 2007-12-05 | 天乾（无锡）科技有限公司 | Method for founding main regulation valve body of steam turbine |
| CN101476085A (en) * | 2009-01-08 | 2009-07-08 | 辽宁福鞍铸业集团有限公司 | Method for foundry production of ultra-supercritical main steam control valve for nuclear power unit |
| CN101618508A (en) * | 2009-07-30 | 2010-01-06 | 扬州东升汽车零部件制造有限公司 | Method for producing vehicle-used stabilizer bar with high corrosion resistance |
| CN101745606A (en) * | 2009-12-29 | 2010-06-23 | 上海应用技术学院 | Casting technology method for high-rigidity gray iron hydraulic valve body |
| US20120160376A1 (en) * | 2010-12-28 | 2012-06-28 | The Japan Steel Works, Ltd. | Heat resistant cast steel, manufacturing method thereof, cast parts of steam turbine, and manufacturing method of cast parts of steam turbine |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104532115A (en) * | 2014-12-31 | 2015-04-22 | 铜陵市经纬流体科技有限公司 | Hydrogen-embrittlement-resistant high-strength soft sealing sluice valve body and preparation method thereof |
| CN106591693A (en) * | 2016-12-20 | 2017-04-26 | 铜陵市经纬流体科技有限公司 | High-sealing type valve rod for gate valve |
| CN106678408A (en) * | 2016-12-20 | 2017-05-17 | 铜陵市经纬流体科技有限公司 | Check valve body suitable for acid solutions |
| CN114273617A (en) * | 2021-12-24 | 2022-04-05 | 福建贝得阀门有限公司 | Rapid casting molding process for valve body of soft and hard sealing ball valve |
| CN114273617B (en) * | 2021-12-24 | 2024-02-27 | 福建贝得阀门有限公司 | Rapid casting molding process for valve body of soft and hard sealing ball valve |
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| Publication number | Publication date |
|---|---|
| CN102994890B (en) | 2016-03-02 |
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Effective date of registration: 20160126 Address after: 244000 Anhui Tongling lion mountain eastern suburbs Office union residents committee Applicant after: TONGLING JINGWEI FLUID SCIENCE & TECHNOLOGY Co.,Ltd. Address before: 244121 Tongling Jinqiao Industrial Park, Tongling, Anhui Applicant before: TONGLING GUOFANG PLUMBING TECHNOLOGY Co.,Ltd. |
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Effective date of registration: 20171229 Address after: 541004 Dongyuan building, Seven Star District, Guilin City, Guangxi 801 Patentee after: Qiu Deliang Address before: 244000 Anhui Tongling lion mountain eastern suburbs Office union residents committee Patentee before: TONGLING JINGWEI FLUID SCIENCE & TECHNOLOGY Co.,Ltd. |
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Effective date of registration: 20180604 Address after: 730100 Chiang Kai Ying 252, Dingyuan Industrial Park, Yuzhong County, Lanzhou, Gansu Patentee after: GANSU ZHUDUN CIVIL DEFENSE ENGINEERING Co.,Ltd. Address before: 510000 Guangdong science and Technology Industrial Development Zone, Guangzhou, 231 and 233 podium B1B2 Building 1, two, three, four Patentee before: BOAO ZONGHENG NETWORK TECHNOLOGY Co.,Ltd. Effective date of registration: 20180604 Address after: 510000 Guangdong science and Technology Industrial Development Zone, Guangzhou, 231 and 233 podium B1B2 Building 1, two, three, four Patentee after: BOAO ZONGHENG NETWORK TECHNOLOGY Co.,Ltd. Address before: 541004 Dongyuan building, Seven Star District, Guilin City, Guangxi 801 Patentee before: Qiu Deliang |
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Effective date of registration: 20230804 Address after: 637200 section 2, Fenghuang Avenue, Duofu Industrial Park, Xichong County, Nanchong City, Sichuan Province Patentee after: SICHUAN HONGFAN SPECIAL EQUIPMENT ENGINEERING Co.,Ltd. Address before: 730100 Chiang Kai Ying 252, Dingyuan Industrial Park, Yuzhong County, Lanzhou, Gansu Patentee before: GANSU ZHUDUN CIVIL DEFENSE ENGINEERING Co.,Ltd. |
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