CN102994886B - A kind of method of casting stopping valve valve plate processed - Google Patents
A kind of method of casting stopping valve valve plate processed Download PDFInfo
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- CN102994886B CN102994886B CN201210372951.2A CN201210372951A CN102994886B CN 102994886 B CN102994886 B CN 102994886B CN 201210372951 A CN201210372951 A CN 201210372951A CN 102994886 B CN102994886 B CN 102994886B
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- valve plate
- incubated
- valve
- plate blank
- cooled
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- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000005266 casting Methods 0.000 title claims abstract description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 8
- 238000009413 insulation Methods 0.000 claims abstract description 7
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 6
- 239000010959 steel Substances 0.000 claims abstract description 6
- 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
- 238000010791 quenching Methods 0.000 claims description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- 238000005496 tempering Methods 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 5
- 238000005242 forging Methods 0.000 claims description 5
- 238000003303 reheating Methods 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 4
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 claims description 3
- 238000004080 punching Methods 0.000 claims description 3
- 230000000171 quenching effect Effects 0.000 claims description 3
- 238000009966 trimming Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000010924 continuous production Methods 0.000 abstract 1
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004663 powder metallurgy Methods 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- NICDRCVJGXLKSF-UHFFFAOYSA-N nitric acid;trihydrochloride Chemical compound Cl.Cl.Cl.O[N+]([O-])=O NICDRCVJGXLKSF-UHFFFAOYSA-N 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
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Abstract
The invention discloses a kind of method of casting stopping valve valve plate processed, include following steps: a, cast stopping valve valve plate blank, in valve plate blank, chemical component weight per-cent is:? 0.086%≤C≤0.150%, 0.20%≤Si≤1.90%, 0.35%≤Mn≤1.35%, 0.010%≤P≤0.030%, 0.010%≤S≤0.030%, 6.50%≤Cr≤8.50%, trace≤B≤0.0018%, surplus is iron and inevitable impurity; The steel ingot temperature of casting is down to 350 DEG C, reheats to 670-780 DEG C, and insulation 3-5 hour, stove is chilled to 300 DEG C, is incubated 3 hours, reheats to 650-760 DEG C, is incubated 10 hours, is cooled to 400 DEG C with 45 DEG C/h, then with 25 DEG C/h, be cooled to 150 DEG C.The present invention has higher continuous production, and material use efficiency is high, is suitable for producing in enormous quantities, and reduce costs, production efficiency is high, manufacturing cost is lower.
Description
Technical field
The present invention relates to a kind of preparation method of seat of stop valve, specifically belong to a kind of method of casting stopping valve valve plate processed.
Background technology
Stopping valve is useful in the chloroazotic acid of the various concentration of-50 ~ 150 DEG C, sulfuric acid, hydrochloric acid, hydrofluoric acid and various organic acid, strong acid, strong oxidizer, is also applicable to highly basic organic solvent and other corrosive gases of various concentration, the pipeline of liquid medium uses.
At present, prepare stopping valve industry, domestic stopping valve all adopts common rapid steel material, or stainless steel material is by mach valve seat.Compared with powder metallurgy seat of stop valve, the valve block process velocity that common rapid steel material or the machining of stainless steel material manufacture is slower, material use efficiency is not high, and powder metallurgical technique manufactures stopping valve, not only material use efficiency is high, and be suitable for producing in enormous quantities, need to carry out a small amount of ground finish to powder metallurgy valve block before assembling uses.
Summary of the invention
Technical problem to be solved by this invention is for seat of stop valve Technology present situation, and a kind of method of casting stopping valve valve plate processed that a kind of production efficiency provided is high, manufacturing cost is lower.
The technical solution used in the present invention is as follows:
Cast a method for stopping valve valve plate processed, include following steps:
A, cast stopping valve valve plate blank, in valve plate blank, chemical component weight per-cent is: 0.086%≤C≤0.150%, 0.20%≤Si≤1.90%, 0.35%≤Mn≤1.35%, 0.010%≤P≤0.030%, 0.010%≤S≤0.030%, 6.50%≤Cr≤8.50%, trace≤B≤0.0018%, surplus is iron and inevitable impurity; The steel ingot temperature of casting is down to 350 DEG C, reheats to 670-780 DEG C, insulation 3-5 hour, and stove is chilled to 300 DEG C, is incubated 3 hours, reheats to 650-760 DEG C, is incubated 10 hours, is cooled to 400 DEG C with 45 DEG C/h, then with 25 DEG C/h, be cooled to 150 DEG C;
B, valve plate blank is put into punch press carry out trimming, punching process, and deburring;
C, quench treatment: the valve plate blank after step b forging is heated to 980 DEG C and is incubated 1-2h, oil cooling is to higher than reheating the temperature range to 680 DEG C-750 DEG C after 100 DEG C and being incubated 2h, water-cooled afterwards;
D, temper: under protective atmosphere, send into the valve plate after quenching in tempering stove and be heated to 350-580 DEG C, insulation 50-110min;
E, sub-zero treatment: valve plate after tempering is loaded container, and add liquid nitrogen and carry out sub-zero treatment, the time is 11-12 hour.
Described quench treatment: the valve plate blank after step b forging is heated to 980 DEG C and is incubated 1.5h, oil cooling is to higher than reheating the temperature range to 720 DEG C after 100 DEG C and being incubated 2h, water-cooled afterwards.
Compared with prior art, the invention has the advantages that:
Constitutive material formula of the present invention is reasonable, and technique is simple, and alloy has hot hardness and the high temperature compression strength of improvement, and be applicable to being applied to the valve that high temperature occasion is made, the long service life of valve, qualification rate is high, substantially increases the quality of product, is applicable to extensively promoting.
Tensile strength sigma b of the present invention (MPa): >=1080, yield strength σ s (MPa): >=930, elongation δ 5 (%): >=12, relative reduction in area ψ (%): >=45, Impact energy Ak v (J): >=63, notched bar impact strength α kv (J/cm2): >=78 (8).
Embodiment
Cast a method for stopping valve valve plate processed, include following steps:
A, cast stopping valve valve plate blank, in valve plate blank, chemical component weight per-cent is: 0.086%≤C≤0.150%, 0.20%≤Si≤1.90%, 0.35%≤Mn≤1.35%, 0.010%≤P≤0.030%, 0.010%≤S≤0.030%, 6.50%≤Cr≤8.50%, trace≤B≤0.0018%, surplus is iron and inevitable impurity; The steel ingot temperature of casting is down to 350 DEG C, reheats to 670-780 DEG C, insulation 3-5 hour, and stove is chilled to 300 DEG C, is incubated 3 hours, reheats to 650-760 DEG C, is incubated 10 hours, is cooled to 400 DEG C with 45 DEG C/h, then with 25 DEG C/h, be cooled to 150 DEG C;
B, valve plate blank is put into punch press carry out trimming, punching process, and deburring;
C, quench treatment: the valve plate blank after step b forging is heated to 980 DEG C and is incubated 1.5h, oil cooling is to higher than reheating the temperature range to 720 DEG C after 100 DEG C and being incubated 2h, water-cooled afterwards;
D, temper: under protective atmosphere, send into the valve plate after quenching in tempering stove and be heated to 350-580 DEG C, insulation 50-110min;
E, sub-zero treatment: valve plate after tempering is loaded container, and add liquid nitrogen and carry out sub-zero treatment, the time is 11-12 hour.
Claims (2)
1. cast a method for stopping valve valve plate processed, it is characterized in that, include following steps:
A, cast stopping valve valve plate blank, in valve plate blank, chemical component weight per-cent is: 0.086%≤C≤0.150%, 0.20%≤Si≤1.90%, 0.35%≤Mn≤1.35%, 0.010%≤P≤0.030%, 0.010%≤S≤0.030%, 6.50%≤Cr≤8.50%, trace≤B≤0.0018%, surplus is iron and inevitable impurity; The steel ingot temperature of casting is down to 350 DEG C, reheats to 670-780 DEG C, insulation 3-5 hour, and stove is chilled to 300 DEG C, is incubated 3 hours, reheats to 650-760 DEG C, is incubated 10 hours, is cooled to 400 DEG C with 45 DEG C/h, then with 25 DEG C/h, be cooled to 150 DEG C;
B, valve plate blank is put into punch press carry out trimming, punching process, and deburring;
C, quench treatment: the valve plate blank after step b forging is heated to 980 DEG C and is incubated 1-2h, oil cooling is to higher than reheating the temperature range to 680 DEG C-750 DEG C after 100 DEG C and being incubated 2h, water-cooled afterwards;
D, temper: under protective atmosphere, send into the valve plate after quenching in tempering stove and be heated to 350-580 DEG C, insulation 50-110min;
E, sub-zero treatment: valve plate after tempering is loaded container, and add liquid nitrogen and carry out sub-zero treatment, the time is 11-12 hour.
2. the method for casting according to claim 1 stopping valve valve plate processed, it is characterized in that: described quench treatment: the valve plate blank after step b forging is heated to 980 DEG C and is incubated 1.5h, oil cooling is to higher than reheating the temperature range to 720 DEG C after 100 DEG C and being incubated 2h, water-cooled afterwards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210372951.2A CN102994886B (en) | 2012-09-29 | 2012-09-29 | A kind of method of casting stopping valve valve plate processed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210372951.2A CN102994886B (en) | 2012-09-29 | 2012-09-29 | A kind of method of casting stopping valve valve plate processed |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102994886A CN102994886A (en) | 2013-03-27 |
| CN102994886B true CN102994886B (en) | 2016-01-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210372951.2A Expired - Fee Related CN102994886B (en) | 2012-09-29 | 2012-09-29 | A kind of method of casting stopping valve valve plate processed |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106834917A (en) * | 2016-12-20 | 2017-06-13 | 铜陵市经纬流体科技有限公司 | A kind of resistance to deformation shutoff valve alloy valve plate |
| CN109628725B (en) * | 2019-01-31 | 2020-06-23 | 磐石市星环阀片有限公司 | High-strength automobile valve plate heat treatment equipment and machining method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP5346007B2 (en) * | 2007-03-29 | 2013-11-20 | イリノイ トゥール ワークス インコーポレイティド | Improvement of fuel shut-off valve assembly and manufacturing / assembling method thereof |
| CN101780627A (en) * | 2010-02-04 | 2010-07-21 | 苏州赛华仪控有限公司 | Manufacturing method of valve rod of high temperature and high pressure cut-off valve |
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Effective date of registration: 20151211 Address after: Tongcheng Nan Lu, Baohe District of Hefei city in Anhui province 230009 No. 369 unit 8 layer A crystal Town Apartments Applicant after: HEFEI KANGLING HEALTH PRESERVING 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: 20170828 Address after: Hongshan Industrial Park, Wu Yi Zhen 239000 Anhui city of Chuzhou Province Patentee after: CHUZHOU HONGYUAN SPRAYING Co.,Ltd. Address before: Tongcheng Nan Lu, Baohe District of Hefei city in Anhui province 230009 No. 369 unit 8 layer A crystal Town Apartments Patentee before: HEFEI KANGLING HEALTH PRESERVING SCIENCE & TECHNOLOGY Co.,Ltd. |
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