CN107385321A - A kind of relief valve body preparation method - Google Patents
A kind of relief valve body preparation method Download PDFInfo
- Publication number
- CN107385321A CN107385321A CN201710413782.5A CN201710413782A CN107385321A CN 107385321 A CN107385321 A CN 107385321A CN 201710413782 A CN201710413782 A CN 201710413782A CN 107385321 A CN107385321 A CN 107385321A
- Authority
- CN
- China
- Prior art keywords
- valve body
- casting
- liquid
- relief valve
- casting liquid
- 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.)
- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/001—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass valves or valve housings
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/006—Making ferrous alloys compositions used for making ferrous alloys
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/04—Making ferrous alloys by melting
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/36—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.7% by weight of carbon
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
Abstract
The invention discloses a kind of relief valve body preparation method, belong to valve body manufacturing technology field, comprise the following steps：A. casting liquid, casting valve body are prepared, the chemical component weight percentage for liquid of casting is：C：2.5 3.2%, Si：0.3 1.1%, Mn：0.7 1.1%, P：0.45 0.65%, S：0.04 0.06%, Cr：0.3 0.4%, Ni：0.3 0.6%, Cu：0.45 0.72%, Al：0.54 0.75%, surplus is iron, and above-mentioned each raw material heating melting forms casting liquid；B. casting liquid is cast in mould, cooled and solidified, produces valve body；C. valve body is placed in heating furnace heat treatment；D. valve body clamping is processed into spool bore on boring machine；E. the annular groove on the sealing surface and sealing surface of valve body is machined；F. in valve body surface hot-spraying nano anti-corrosion layer.Obtained valve body surface quality is high, good mechanical property, is not in crackle, and service life is grown.
Description
Technical field
The present invention relates to valve body manufacturing technology field, in particular to a kind of relief valve body preparation method.
Background technology
Pressure-reducing valve is the outlet pressure that inlet pressure is reduced to a certain needs by regulation, and relies on the energy of medium in itself
Amount, outlet pressure is set to keep stable valve automatically.From the viewpoint of hydrodynamics, pressure-reducing valve is that a local resistance can become
The restricting element of change, i.e., by changing orifice size, change the kinetic energy of flow velocity and fluid, cause the different pressure losses, from
And reach the purpose of decompression.Then by control and the regulation of regulating system, the fluctuation and spring force for making downstream pressure balance each other,
Downstream pressure is set to keep constant in certain error range.At present many relief valve bodies be using stainless steel machining and
Into its mechanical performance is relatively poor in process, easily cracked.
The content of the invention
It is an object of the invention to provide a kind of relief valve body preparation method, to solve the above problems.
To realize the object of the invention, the technical scheme that uses for：A kind of relief valve body preparation method, including following step
Suddenly：
A. casting liquid, casting valve body are prepared, the chemical component weight percentage for liquid of casting is：C：2.5-3.2%, Si：0.3-
1.1%, Mn：0.7-1.1%, P：0.45-0.65%, S：0.04-0.06%, Cr：0.3-0.4%, Ni：0.3-0.6%, Cu：0.45-
0.72%, Al：0.54-0.75%, surplus are iron, and above-mentioned each raw material heating melting forms casting liquid；
B. casting liquid is cast in mould, cooled and solidified, produces valve body；
C. valve body is placed in heating furnace, is warming up to 200-300 DEG C of isothermal holding 3-4h, then with 50-70 DEG C/h of slowly heating
To 800-850 DEG C of isothermal holding 6-8h, then with 30-50 DEG C/h of slow cooling to 600-650 DEG C of isothermal holding 5-7 hour, most
Room temperature is slowly dropped to 50-60 DEG C/h afterwards, takes out valve body；
D. by valve body clamping on boring machine, by borer on the spindle hole of boring machine, the spool bore of cutterhead alignment valve body is made
Carry out Boring；
E. the annular groove on the sealing surface and sealing surface of valve body is machined；
F. in valve body surface hot-spraying nano anti-corrosion layer.
Further, seal is loaded in annular groove.
Further, the nanometer anti-corrosion layer thickness is 35-60nm.
Further, spray to form a nanometer anti-corrosion layer in valve body surface using Electrostatic Spray Technology.
The invention has the advantages that, good mechanical property high using valve body surface quality made from the method for the present invention, no
Crackle occurs, and sealing property and antiseptic property are strong, service life length.
Embodiment
It is described in further detail below by specific examples of the implementation and to the present invention.
Relief valve body preparation method provided by the invention, comprises the following steps：
A. casting liquid, casting valve body are prepared, the chemical component weight percentage for liquid of casting is：C：2.5-3.2%, Si：0.3-
1.1%, Mn：0.7-1.1%, P：0.45-0.65%, S：0.04-0.06%, Cr：0.3-0.4%, Ni：0.3-0.6%, Cu：0.45-
0.72%, Al：0.54-0.75%, surplus are iron, and above-mentioned each raw material heating melting forms casting liquid；
B. casting liquid is cast in mould, cooled and solidified, produces valve body；
C. valve body is placed in heating furnace, is warming up to 200-300 DEG C of isothermal holding 3-4h, then with 50-70 DEG C/h of slowly heating
To 800-850 DEG C of isothermal holding 6-8h, then with 30-50 DEG C/h of slow cooling to 600-650 DEG C of isothermal holding 5-7 hour, most
Room temperature is slowly dropped to 50-60 DEG C/h afterwards, takes out valve body；
D. by valve body clamping on boring machine, by borer on the spindle hole of boring machine, the spool bore of cutterhead alignment valve body is made
Carry out Boring；
E. the annular groove on the sealing surface and sealing surface of valve body is machined；
F. in valve body surface hot-spraying nano anti-corrosion layer.
The chemical component weight percentage of casting liquid can specifically use：C：3%, Si：0.8%, Mn：0.9%, P：0.5%, S：
0.05%, Cr：0.4%, Ni：0.5%, Cu：0.6%, Al：0.65%, surplus is iron.Load seal in annular groove, in individual sealing surface
Annular groove in installation seal, ensure good sealing property, seal can be rubber gasket, thickness 1-2mm.
Nanometer anti-corrosion layer thickness is 35-60nm.Spray to form a nanometer corrosion resistant in valve body surface using Electrostatic Spray Technology
Lose layer.
Mechanics properties testing data：
Hardness：≤ 118HB.
Impact energy Ak v (J)：≥ 81
Tensile strength sigma b (MPa)：≥ 779
Yield strength σ s (MPa)：≥ 594
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for those skilled in the art
For member, there can be various modifications and variations in the spirit and principles in the present invention, these equivalent modifications or replacement etc., wrap
It is contained within protection scope of the present invention.
Claims (4)
1. a kind of relief valve body preparation method, it is characterised in that comprise the following steps：
A. casting liquid, casting valve body are prepared, the chemical component weight percentage for liquid of casting is：C：2.5-3.2%, Si：0.3-
1.1%, Mn：0.7-1.1%, P：0.45-0.65%, S：0.04-0.06%, Cr：0.3-0.4%, Ni：0.3-0.6%, Cu：0.45-
0.72%, Al：0.54-0.75%, surplus are iron, and above-mentioned each raw material heating melting forms casting liquid；
B. casting liquid is cast in mould, cooled and solidified, produces valve body；
C. valve body is placed in heating furnace, is warming up to 200-300 DEG C of isothermal holding 3-4h, then with 50-70 DEG C/h of slowly heating
To 800-850 DEG C of isothermal holding 6-8h, then with 30-50 DEG C/h of slow cooling to 600-650 DEG C of isothermal holding 5-7 hour, most
Room temperature is slowly dropped to 50-60 DEG C/h afterwards, takes out valve body；
D. by valve body clamping on boring machine, by borer on the spindle hole of boring machine, the spool bore of cutterhead alignment valve body is made
Carry out Boring；
E. the annular groove on the sealing surface and sealing surface of valve body is machined；
F. in valve body surface hot-spraying nano anti-corrosion layer.
2. relief valve body preparation method according to claim 1, it is characterised in that load seal in annular groove.
3. relief valve body preparation method according to claim 1, it is characterised in that the nanometer anti-corrosion layer thickness is
35-60nm。
4. relief valve body preparation method according to claim 1, it is characterised in that using Electrostatic Spray Technology in valve body
Surface spraying forms nanometer anti-corrosion layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710413782.5A CN107385321A (en) | 2017-06-05 | 2017-06-05 | A kind of relief valve body preparation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710413782.5A CN107385321A (en) | 2017-06-05 | 2017-06-05 | A kind of relief valve body preparation method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107385321A true CN107385321A (en) | 2017-11-24 |
Family
ID=60332927
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710413782.5A Withdrawn CN107385321A (en) | 2017-06-05 | 2017-06-05 | A kind of relief valve body preparation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107385321A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108441784A (en) * | 2018-05-09 | 2018-08-24 | 徐州迈斯特机械科技有限公司 | A kind of relief valve body production method |
| CN109304407A (en) * | 2018-12-04 | 2019-02-05 | 中国航发贵州红林航空动力控制科技有限公司 | A kind of valve base sealing annulus impact forming method |
| CN109990137A (en) * | 2017-12-30 | 2019-07-09 | 宜兴市恒邦环保有限公司 | A kind of plumbing spool processing technology |
| CN111197663A (en) * | 2020-02-25 | 2020-05-26 | 四川精控阀门制造有限公司 | Two-body type fixed ball valve and manufacturing method thereof |
| CN111791032A (en) * | 2020-07-24 | 2020-10-20 | 河南华中科翔石油机械有限公司 | Melt-blown processing technology for wear-resistant layer of mud pump valve body and valve seat |
-
2017
- 2017-06-05 CN CN201710413782.5A patent/CN107385321A/en not_active Withdrawn
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109990137A (en) * | 2017-12-30 | 2019-07-09 | 宜兴市恒邦环保有限公司 | A kind of plumbing spool processing technology |
| CN108441784A (en) * | 2018-05-09 | 2018-08-24 | 徐州迈斯特机械科技有限公司 | A kind of relief valve body production method |
| CN109304407A (en) * | 2018-12-04 | 2019-02-05 | 中国航发贵州红林航空动力控制科技有限公司 | A kind of valve base sealing annulus impact forming method |
| CN111197663A (en) * | 2020-02-25 | 2020-05-26 | 四川精控阀门制造有限公司 | Two-body type fixed ball valve and manufacturing method thereof |
| CN111197663B (en) * | 2020-02-25 | 2022-03-22 | 四川精控阀门制造有限公司 | Two-body type fixed ball valve and manufacturing method thereof |
| CN111791032A (en) * | 2020-07-24 | 2020-10-20 | 河南华中科翔石油机械有限公司 | Melt-blown processing technology for wear-resistant layer of mud pump valve body and valve seat |
| CN111791032B (en) * | 2020-07-24 | 2021-12-24 | 河南华中科翔石油机械有限公司 | Melt-blown processing technology for wear-resistant layer of mud pump valve body and valve seat |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20171124 |
|
| WW01 | Invention patent application withdrawn after publication |